Entries |
Document | Title | Date |
20080218104 | Power management for multi-module energy storage systems in electric, hybrid electric, and fuel cell vehicles - An electric energy storage system (EESS) for providing a power management solution for a multi-subsystem energy storage in electric, hybrid electric, and fuel cell vehicles. The EESS has a controller that determines when to draw power from each subsystem as needed by the vehicle. | 09-11-2008 |
20080265808 | Motor Drive Voltage-Boost Control - A drive system for a motor having a rotor and a phase winding (a, b, c) comprises; a drive circuit including switch means associated with the winding a, b, c for varying the current passing through the winding; rotor position sensing means arranged to sense the position of the rotor; control means arranged to provide drive signals to control the switch means; a power input for connection to a power supply at a nominal voltage; and boost means in electric communication with the power input and power output, and controllable to boost the nominal voltage to a higher voltage for application to the winding. | 10-30-2008 |
20080265809 | Field weakening control apparatus for permanent magnet motor and electric power steering using same - A motor control apparatus which controls an output voltage reference for an inverter driving a permanent magnet synchronous motor based on d-axis and q-axis current references, d-axis and q-axis current detected values, and a computed frequency value. When a torque reference specifying torque greater than maximum torque that the motor can output is input, a limit value for a phase angle that is a deviation between a rotation phase reference of control and a rotation phase value of the motor is varied depending on a quantity of the predetermined state. | 10-30-2008 |
20080272717 | METHOD AND APPARATUS TO DETERMINE ROTATIONAL POSITION OF AN ELECTRICAL MACHINE - A control system and method to determine position of a rotor relative to a stator for a synchronous multipole electrical machine is presented, including one for application on a fuel/electric hybrid powertrain for a vehicle. The machine includes a stator, a rotor, and a rotor position sensing mechanism. The control system controls the electrical machine, in conjunction with an electrical storage device and an inverter, using algorithms and calibrations which derive a rotor position based upon a sensorless position sensing technique, and determine an offset from a sensed rotor position. Electrical output from the inverter to the machine is controlled based the offset, which is stored non-volatile memory. A rotor position is derived based upon a sensorless position sensing technique during initial machine operation after startup of the machine, and includes operation in a torque-generative mode and in an electrical energy-generative mode. | 11-06-2008 |
20080272718 | Power electronic circuit arrangement for a rotating field machine - A power electronic circuit arrangement includes functional blocks for controllable, bidirectional energy exchange between a rotating field machine with at least one phase winding and an external energy store with one positive terminal and one negative terminal. At least one functional block is designed as a functional block that is connection-compatible on the power side and includes at least one internal energy store, such that this functional block has at least one additional switching state, in which an output voltage (U | 11-06-2008 |
20080290824 | APPARATUS AND METHOD FOR CONTROLLING OPERATION OF MOTOR - An apparatus for controlling a motor includes an inverter to convert a DC voltage into an AC voltage, a power selecting circuit to select external power or power from the inverter, and a controller to control operation of the power selecting circuit according to a load of the motor. | 11-27-2008 |
20080309262 | Multiple Phase Electric Motor and Drive - A multiple phase electric motor provided with multiple inverter power circuits is described herein. The capacity of the capacitor bank required for multiple phase motors operating from a DC power source is therefore decreased. This is done by forming groups of phases that are powered by a separate inverter power circuit. The inverter power circuits are connected to the same DC power source including a bank of capacitors and are so controlled as to be phase offset from one another to allow the use of a smaller capacity capacitor bank. | 12-18-2008 |
20090001909 | AUTOMOTIVE POWER INVERTER WITH REDUCED CAPACITIVE COUPLING - An automotive power inverter is provided. The power inverter includes a chassis, a microelectronic die coupled to the chassis and having an integrated circuit formed thereon, and an insulating region between the chassis and the microelectronic die. | 01-01-2009 |
20090001910 | Control method, control circuit, and control program for power retractable mirror - A control method can stop motor operation reliably when a mirror rotator is mechanically locked at a driven end of the mirror rotator. The control method operates a motor | 01-01-2009 |
20090033252 | DOUBLE ENDED INVERTER SYSTEM FOR A VEHICLE HAVING TWO ENERGY SOURCES THAT EXHIBIT DIFFERENT OPERATING CHARACTERISTICS - A double ended inverter system for an AC electric traction motor of a vehicle is disclosed. The inverter system serves as an interface between two different energy sources having different operating characteristics. The inverter system includes a first energy source having first operating characteristics associated therewith, and a first inverter subsystem coupled to the first energy source and configured to drive the AC electric traction motor. The inverter system also includes a second energy source having second operating characteristics associated therewith, wherein the first operating characteristics and the second operating characteristics are different, and a second inverter subsystem coupled to the second energy source and configured to drive the AC electric traction motor. In addition, the inverter system has a controller coupled to the first inverter subsystem and to the second inverter subsystem. The controller is configured to influence operation of the first inverter subsystem and the second inverter subsystem to manage power transfer among the first energy source, the second energy source, and the AC electric traction motor. | 02-05-2009 |
20090033253 | ELECTRIC TRACTION SYSTEM FOR A VEHICLE HAVING A DUAL WINDING AC TRACTION MOTOR - An electric traction system for a vehicle having a high voltage battery and a low voltage battery is provided. The system includes an AC electric motor and a double ended inverter system coupled to the AC electric motor. The AC electric motor has a first set of windings and a second set of windings that occupy common stator slots, where the first set of windings and the second set of windings are electrically isolated from each other. The double ended inverter system drives the AC electric motor using energy obtained from the high voltage battery and energy obtained from the low voltage battery. The double ended inverter system utilizes a first inverter subsystem coupled between the first set of windings and the high voltage battery, and a second inverter subsystem coupled between the second set of windings and the low voltage battery. | 02-05-2009 |
20090033254 | DOUBLE ENDED INVERTER SYSTEM WITH A CROSS-LINKED ULTRACAPACITOR NETWORK - A double ended inverter system for an AC traction motor of a vehicle includes a fuel cell configured to provide a DC voltage, an impedance source inverter subsystem coupled to the fuel cell, a DC voltage source, and an inverter subsystem coupled to the DC voltage source. The impedance source inverter subsystem, which includes an ultracapacitor, is configured to drive the AC traction motor. The inverter subsystem is configured to drive the AC electric traction motor. The ultracapacitor is implemented in a crossed LC network coupled to the fuel cell. | 02-05-2009 |
20090033255 | CHARGING ENERGY SOURCES WITH A RECTIFIER USING DOUBLE-ENDED INVERTER SYSTEM - Systems and methods are provided for charging energy sources with a rectifier using a double-ended inverter system. An apparatus is provided for an electric drive system for a vehicle. The electric drive system comprises an electric motor configured to provide traction power to the vehicle. A first inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A first energy source is coupled to the first inverter, wherein the first inverter is configured to provide power flow between the first energy source and the electric motor. A second inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A rectifier is coupled to the second inverter and configured to produce a direct current output. The second inverter is configured to provide power from the rectifier to the electric motor. | 02-05-2009 |
20090058329 | Power Supply System and Vehicle - A maximum value selection unit ( | 03-05-2009 |
20090066271 | METHOD AND SYSTEM FOR CONVERTING DC POWER TO AC POWER - Methods and systems for converting direct current (DC) power to alternating current (AC) power are provided. A first phase of the AC power is generated based on a first carrier signal. A second phase of the AC power is generated based on a second carrier signal. | 03-12-2009 |
20090072770 | POWER INVERTER MODULE THERMAL MANAGEMENT - According to an example embodiment, a method is provided for limiting an operational temperature of a motor. The method includes generating a maximum allowable current I* | 03-19-2009 |
20090091277 | Dust extractor for a battery-operated electric hand-held power tool - A dust extraction module ( | 04-09-2009 |
20090108780 | METHOD AND SYSTEM FOR CONTROLLING A POWER INVERTER IN ELECTRIC DRIVES - Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor. | 04-30-2009 |
20090115358 | Hybrid vehicle and method of controlling hybrid vehicle - A hybrid vehicle includes a power generator that generates electric power using power from an internal combustion engine; a motor that outputs power for travel of the hybrid vehicle; a first inverter connected to an electric power storage device and the motor to drive the motor; a second inverter connected to the electric power storage device; and a large drive power determination portion that determines whether the hybrid vehicle is in a large-drive-power required state in which drive power equal to or larger than a predetermined value is required for the travel of the hybrid vehicle. When it is determined that the hybrid vehicle is not in the large-drive-force required state, the second inverter is connected to the power generator. When it is determined that the hybrid vehicle is in the large-drive-force required state, the second inverter is connected to the motor. | 05-07-2009 |
20090140673 | ELECTRIC POWER STEERING SYSTEM - In a power supply apparatus | 06-04-2009 |
20090146588 | BOOSTER CONVERTER CIRCUIT FOR VEHICLES - An object of the invention is to limit a current flowing in a booster converter circuit for a vehicle within a predetermined range. In the booster converter circuit for a vehicle including a battery that outputs a DC voltage; a switching unit having a switching element to be controlled to ON or OFF; an inductive element unit being connected between the battery and the switching unit and including an inductive element; a switching control unit that controls the switching element, an output voltage measuring unit that measures an output voltage of the booster converter circuit for a vehicle is provided, and the duty ratio determining device obtains a control duty ratio with respect to the switching element on the basis of a measured output voltage value so that a value of a converter current flowing through a path from the battery to the switching unit falls within a predetermined range. | 06-11-2009 |
20090206779 | MOTOR VEHICLE - A system and method for operating, or electrically communicating with, an electrical supply network are disclosed. A vehicle is coupled to the electrical supply network, a trigger causes a partial discharge of an electrical energy storage device of the vehicle into electric power network, discharging electrical energy into the electric power network from the vehicle. | 08-20-2009 |
20090237012 | CORDLESS POWER TOOL AND BATTERY DEVICE USED FOR SAME - A power tool, having attached thereto a battery device including one or a plurality of cell assemblies, includes a motor which is supplied with a DC current from the battery device, a switching element which controls a drive and a stop of the motor, means which detects a number of cell assemblies, and control means which controls the switching element in such a way as to stop the drive of the motor when the number of cell assemblies is smaller than a prescribed value. | 09-24-2009 |
20090256502 | BATTERY MANAGEMENT SYSTEM FOR A CORDLESS TOOL - A hand-held, battery powered tool (e.g., nutrunner, drill) includes an output head operatively connected to a motor, a plurality of battery cells, an ON/OFF start switch, a resistance sensor that measures a resistance of the output head to movement, and a controller. When the start switch is ON and the resistance sensed by the resistance sensor does not exceed a predetermined shift resistance, the controller automatically connects the plurality of battery cells to each other and the motor in series. When the start switch is ON and the resistance sensed by the resistance sensor exceeds the predetermined shift resistance, the controller automatically connects the plurality of battery cells to each other in parallel and to the motor. | 10-15-2009 |
20090261761 | WORKING VEHICLE - A crawler type power shovel vehicle ( | 10-22-2009 |
20090295313 | Rechargeable power tool, control unit and recording medium - A rechargeable power tool includes a direct current motor, a switching circuit, at least one speed setting unit, a duty ratio setting unit, a drive unit, an operation amount detecting unit, an abnormality determining unit, and a determination threshold setting unit. The abnormality determining unit compares an operation amount detected by the operation amount detecting unit and a determination threshold set based on the operation amount to thereby determine whether or not an operation state of the rechargeable power tool is abnormal. The determination threshold setting unit sets the determination threshold in a continuous or stepwise manner in accordance with a rotation speed set by the speed setting unit. | 12-03-2009 |
20100007293 | PROGRAMMABLE POWER-CONTROL CIRCUIT AND METHODS OF OPERATION - An electric-motor controller uses multiple semiconductor switches in parallel, arranged so as to improve turn-on and turn-off synchronization. A physical “sandwich” arrangement improves manufacturability of some embodiments. A system using the controller can recharge a battery pack from a charging source of a different voltage by using a field coil of the motor as an inductor in a step-up or step-down circuit. Controller software monitors parameters such as battery voltage, temperature and current to adjust system operation. | 01-14-2010 |
20100013420 | REVERSE DRIVE CONTROL FOR A MOTORCYCLE - A vehicle comprising a rotatable wheel (e.g., three rotatable wheels), a forward drive mechanism including a forward drive motor (e.g., an internal combustion engine), and a reverse drive mechanism. The reverse drive mechanism includes a reverse drive motor (e.g., an electric motor) adapted to move the chassis in the rearward direction, and a reverse drive control programmed to inhibit operation of the reverse drive mechanism when the forward drive motor is off. In one embodiment, the vehicle includes a battery for operating the reverse drive motor, and the reverse drive control is programmed to inhibit operation of the motor when a characteristic of the battery (e.g., an output voltage) falls below a threshold. The vehicle can further include a temperature sensor for the reverse drive motor. In this embodiment, the reverse drive control is programmed to inhibit operation of the reverse drive motor when the temperature of the motor exceeds a threshold. | 01-21-2010 |
20100019702 | CURRENT SENSING FOR A MULTI-PHASE DC/DC BOOST CONVERTER - Methods and apparatus are provided for sensing currents on a plurality of phases and determining current information therefrom. The multi-phase boost converter includes a single sensor coupled to all of the plurality of phases and a controller coupled to the sensor for determining the current information in response to currents on each of the plurality of phases sensed by the sensor. The sensing method utilizes the gate drive signals and the DC current sensor output to calculate the currents on each of the plurality of phases sensed by the sensor. | 01-28-2010 |
20100045215 | MOTOR DRIVING APPARATUS - A motor driving apparatus for a cleaning appliance includes a battery source and a power controller. The battery source supplies the power controller with an output having a first voltage which decreases as the battery source is discharged. The power controller modulates the output to produce a drive signal for driving a motor that has a second voltage and a variable duty cycle. The power controller increases the duty cycle of the drive signal as the first voltage decreases in order to maintain the second voltage at a substantially constant average value per unit time. By providing the above arrangement, the motor can be supplied with a constant voltage throughout the available run time of the battery. When forming part of a cleaning appliance having a motor, the above arrangement allows the motor to operate at a substantially constant speed throughout the run time of the battery. | 02-25-2010 |
20100045216 | REDUCTION OF START-UP SEQUENCE - The present invention relates to a method for bringing a brushless motor, such as a multiphase brushless motor, operatively connected to for example a compressor into an optimal angular starting position in an energy saving manner, the method comprising the steps of applying a first drive voltage to a first phase winding of the motor and measuring a current flowing in another phase winding of said motor, said current being generated in response to the first drive voltage applied to the first phase winding. The method further comprises the step of switching the applied first drive voltage off when said current reaches a steady-state condition. By applying the method of the present invention a significant amount of power can be saved. The present invention further relates to a system for carrying out the present invention. | 02-25-2010 |
20100084999 | Battery powered vehicular power generation system - A battery powered system using a battery operated hydraulic pump to spin a weighted flywheel which is connected to a generator that generates electricity used to power all of the energy requirements for a vehicle. This system will use dual strings of batteries where one string of batteries can be recharging while the other string is supplying the power to the hydraulic pump. | 04-08-2010 |
20100141185 | SYSTEM AND METHOD FOR MAINTAINING PERFORMANCE OF BATTERY-OPERATED TOOTHBRUSHES - The system periodically measures the battery voltage of the toothbrush and the current in a stator portion of the motor for the appliance. The amplitude of movement of the toothbrush workpiece is determined from the measured stator current. A circuit/control program changes the duty cycle or pulse width of the drive signal from the motor if the battery voltage drops below a first threshold value and a circuit or control program changes the drive frequency of the appliance if the amplitude of the workpiece movement falls below a first threshold value. A circuit/control program terminates the operation of the toothbrush if the voltage drops below a second threshold value or if the amplitude drops below a second threshold value, both of which are less than the respective first thresholds. | 06-10-2010 |
20100141186 | ELECTRIC TOOL AND DEVICE SWITCH FOR AN ELECTRIC TOOL - The invention relates to a device switch for an electric tool, in particular a battery-operated electric tool. A power circuit for supplying power of a motor and an electronic circuit for monitoring the temperature, power and current is integrated into the device switch. The invention moreover relates to a method for monitoring an electric tool, in particular an electric tool with rechargeable battery operation. | 06-10-2010 |
20100181946 | VOLTAGE STEP-UP/DOWN CONVERTER - A motor control apparatus includes a step-up/down converter and an inverter. The converter includes a coil, MOSFETs, capacitors and a control circuit. The control circuit turns on the MOSFET in the high potential side, while tuning off the MOSFET in the low potential side. After a predetermined time, the control circuit turns off the MOSFET in the high potential side and then turns on the MOSFET in the low potential side. It is checked whether the MOSFET, which is switched in the step-down operation, is normal or abnormal based on the voltages of the capacitors. The capacitors produce specific changes in the respective voltages in correspondence to the check result. Thus, the abnormality of the MOSFET can be determined based on the changes. | 07-22-2010 |
20100201293 | ROTARY ELECTRIC MACHINE CONTROL SYSTEM - A rotary electric machine control system includes a battery electric power calculation unit for calculating battery electric power that is supplied from the battery; a torque limitation unit for limiting an output torque of the rotary electric machine; and a battery electric power abrupt variation estimation unit for estimating that the battery electric power is in an abrupt variation state in which the battery electric power is varying abruptly on the basis of at least one of a variation rate of the battery electric power and a variation rate of a rotational speed of the rotary electric machine. | 08-12-2010 |
20100231145 | METHOD FOR CONTROLLING A POLYPHASE VOLTAGE INVERTER - A method for driving a power bridge ( | 09-16-2010 |
20100259203 | ELECTRONICALLY COMMUTATED MOTOR - The invention relates to a method for operating an electronically commutated motor ( | 10-14-2010 |
20100264857 | ELECTRIC POWER STEERING APPARATUS - An electric power steering apparatus includes a charge-discharge circuit including a circuit charging an auxiliary power supply by turning on and off an MOS-FET for voltage boosting and that selectively configures a first output mode in which an electric power is supplied to a motor by a first electrical conduction path to which a voltage of a battery is applied or a second output mode in which the electric power is supplied to the motor by a second electrical conduction path to which a voltage of a source of the series-connected battery and auxiliary power supply is applied. When a failure of the battery is detected, the electric power steering apparatus connects the first conduction path to an electrical conduction path to ground by continuously holding the MOS-FET in an on-state and drives the charge-discharge circuit to select the second output mode, thereby configuring a circuit to supply the motor with the electric power only from the auxiliary power supply. | 10-21-2010 |
20100270955 | MOTOR DRIVE CONTROL DEVICE - There is provided a motor drive control device which allows an improvement in fuel efficiency in terms of electric power while preventing the battery voltage from falling below the lower limit as rectangular wave control is performed. A motor drive control device | 10-28-2010 |
20100301784 | POWER CONVERSION CIRCUIT - In a power conversion circuit operating with high frequency, an off-voltage control circuit | 12-02-2010 |
20100315024 | INVERTER DEVICE - An inverter device includes a filter circuit, an inverter circuit, an electric current detecting circuit, a voltage detecting circuit, a control circuit for outputting a drive signal so as to switch switching devices ON and OFF and an internal power supply. The control circuit includes a shutdown circuit for stopping outputting the drive signal from the control circuit to the switching devices when an electric current flowing through a motor is an overcurrent or a voltage across the inverter circuit is an overvoltage. The shutdown circuit also stops outputting the drive signal from the control circuit to the switching devices when the voltage outputted from the internal power supply is not stabilized. When electric power by residual charge in the capacitor is used after the inverter device is disconnected from a high-voltage battery, the control circuit generates the drive signal based on a triangular reference waveform and also based on three command values for keeping switching devices corresponding to one phase of three phases in either ON or OFF state and for switching ON and OFF the other switching devices corresponding to the remaining two phases. | 12-16-2010 |
20110001442 | Electric bicycle drive system with regenerative charging - Methods and apparatus for reconfiguring a battery and/or an electric motor assembly for an electric bicycle drive system are provided. A battery having a plurality of battery cells in a first configuration adapted to provide a first battery voltage can be reconfigured into a second configuration adapted to provide a second battery voltage. The second battery voltage may be lower than the first battery voltage. The battery can be charged when in the second configuration. Similarly, an arrangement of two or more electric motors can be provided in a first configuration adapted to provide at least one of a first torque output during a driving action and a first regenerative voltage output during a braking action. The motors can be reconfigured into a second configuration adapted to provide at least one of a second torque output during the driving action and a second regenerative voltage output during the braking action. | 01-06-2011 |
20110012542 | DRIVE SYSTEM FOR POWER SWITCHING ELEMENTS - A drive system has a low voltage system, a high voltage system, and a transformer. The high voltage system has drive units which correspond to power switching elements. A capacitance in the high voltage system serves as a flouting power source which supplies electric power to each of the drive units. An output voltage of a secondary side coil of the transformer is supplied to the capacitance. A comparator compares the output voltage at the secondary side coil of the transformer with a threshold value. A switching speed change part changes the switching speed of each of the power switching element based on the comparison result of the comparator. | 01-20-2011 |
20110012543 | ELECTRIC POWER CONVERTER - An electric power converter includes a DC to DC converter section adjusting DC power of a battery with at least two units in series, a DC circuit having at least two DC link capacitors in series between a positive and a negative line from the DC to DC converter section, an electric power converter section connected to the DC circuit to convert DC electric power to AC electric power for a motor, a bilateral switching circuit connecting an intermediate potential point between the capacitors and an AC output point in the electric power converter section, and a short-circuit between the intermediate potential point of the DC circuit and an intermediate potential point between the battery units. Normal operation of a load is ensured even when the battery, the capacitor in the DC circuit or the switching device in the electric power converter section becomes abnormal, while achieving high efficiency. | 01-20-2011 |
20110018476 | CABLE ASSEMBLY FOR MULTIPLE BATTERIES - A vehicle battery cable has a plurality of subsidiary or daughter cables where the subsidiary cables have the same length and gauge and exhibit closely matched resistance. The vehicle battery cable connects a plurality of batteries in parallel to a load in a way that each battery carries the same proportion of the load as every other battery. | 01-27-2011 |
20110025236 | POWER CONVERSION EQUIPMENT - Power conversion equipment includes an electric power converting section that converts DC electric power to multiphase AC electric power and feeds the converted multiphase AC electric power to a multiphase AC motor. A first short-circuit section includes a first switch disposed between a first DC power supply and the electric power converting section. A second short-circuit section includes a second switch disposed between at least one of an electric power feeding section and the electric power input section in the first DC power supply, or between a multiphase AC output point of the electric power converting section and the multiphase AC motor. A switch control section controls the first switch and the second switch such that the first and second switches are prevented from being brought into the closed-state simultaneously. | 02-03-2011 |
20110031907 | CONTROL APPARATUS FOR ELECTRIC ROTATING MACHINE - The control apparatus controls a controlled variable of the electric rotating machine by manipulating an output voltage of a power converter circuit including switching elements operated to connect positive and negative terminals of a DC power source to corresponding terminals of the electric rotating machine. The control apparatus includes a prediction section configured to predict the controlled variable for each of a plurality of cases where the power converter circuit is set in a corresponding one of a plurality of predetermined operating states, a feedforward control section configured to set a command value of the controlled variable in accordance with the voltage of the DC power source and the electrical angular velocity of the electric rotating machine, and a manipulation section configured to select one of the predetermined operating states depending on a result of evaluation by an evaluation function receiving the predicted controlled variable and the command value. | 02-10-2011 |
20110037420 | BATTERY STORAGE DEVICE SYSTEM, AND MOTOR DRIVING BODY AND MOVING BODY USING THE SYSTEM - The invention provides a high-efficiency battery storage device system, and a motor driving body and a moving body using the system. The battery storage device system comprises (1) a main battery storage device A having high energy density relative to an auxiliary battery storage device B, (2) the auxiliary battery storage device B having high output density relative to the main battery storage device A, (3) a warm-up means for warming up the main battery storage device A to a predetermined temperature or more, (4) a warm-up monitoring means for monitoring a need for warm-up with respect to the main battery storage device A, (5) an operation mode switching means for selecting an operation mode from a warm-up operation mode and a normal operation mode and performing the selected operation mode, and (6) an electricity supply system supplying an electric power to an outside of the battery storage device system. | 02-17-2011 |
20110050134 | Series electric engine power drive - The motor generator set is described where in the output from the motor driven generator is fed back to the input of the electric motor in series with the power from the battery, which energizes the motor. Diodes are provided in this unique circuitry between the output of the generator and the input of the motor between the output of the motor and input of the generator, and between the battery and the input of the electric motor to direct current into the electric motor. | 03-03-2011 |
20110057586 | MONITORING BATTERY CELL VOLTAGE - An apparatus includes battery gauge circuitry implemented on an integrated circuit. The battery gauge circuitry includes a plurality of switches that individually open in response to a voltage reduction on a battery cell associated with a respective one of the switches. The battery gauge circuitry also includes a logic device that determines if at least one of the switches is open. The battery gauge circuitry also includes a register that stores data that indicates if at least one switch is open. The battery gauge circuitry also includes a controller that initiates halting power delivery to a load if at least one of the switches is open. The controller also identifies the open switch. | 03-10-2011 |
20110068719 | BATTERY SYSTEM - A battery system manages a plurality of battery cells of an assembled battery. The battery system includes at least a plurality of battery cell management units which is connected to the battery cells and manages the connected battery cells. The battery cell management units are connected to each other. Each of the battery cell management units comprises at least an operation mode switching unit, a parameter-related data generating unit, a parameter data transmitting unit, a parameter data receiving unit, a minimum value specifying unit, a switching command data transmitting unit, and a switching command data receiving unit. | 03-24-2011 |
20110115416 | APPARATUS FOR DRIVING MOTOR OF ELECTRIC VEHICLE - An apparatus for driving a motor of an electric vehicle is provided. The apparatus includes a capacitor supplied with power by a battery; an inverter configured to include a plurality of switching elements, convert direct current (DC) power stored in the capacitor into alternating current (AC) power in accordance with the switching of the switching elements and drive a motor with the AC power; and a capacitor protector provided between the battery and the capacitor and configured to consume initial power supplied by the battery at an early stage of the supply of power by the battery, the capacitor protector including a common resistor that consumes the DC power stored in the capacitor when the capacitor is discharged. Therefore, it is possible to guarantee the reliability of the apparatus. | 05-19-2011 |
20110115417 | PM MOTOR DRIVE POWER SUPPLY APPARATUS - The present invention provides a PM motor drive power supply apparatus which drives a three-phase permanent-magnet synchronous motor by utilizing a direct-current power source | 05-19-2011 |
20110127933 | CONTROL DEVICE FOR ELECTRIC MOTOR DRIVE DEVICE - A control device that controls an electric motor drive device is configured with a current control portion that determines a voltage command value, a voltage control portion that generates a switching control signal, and a current control period determining portion. The control device is also configured with a voltage control period determining portion that determines a voltage control period, and a control period setting portion. In the control device, the current control period determining portion determines, according to a target torque, the current control period as a value that increases continuously or stepwise as the target torque decreases. Furthermore, the voltage control period determining portion determines, according to a rotating speed, the voltage control period as a value that increases continuously or stepwise as the rotating speed decreases. | 06-02-2011 |
20110140642 | POWER CONVERSION DEVICE - Based on rotation information of a synchronous machine detected by a rotation information detector, a controller causes a converter to boost a charge voltage of a capacitor so as to be higher than an induced voltage generated by the synchronous machine at a time of shifting to a coasting operation, maintains the charge voltage during the coasting operation, and performs weak field control so that the induced voltage generated by the synchronous machine becomes lower than a DC voltage at the time of shifting from the coasting operation to a power running operation or to a regenerative operation. | 06-16-2011 |
20110156620 | BATTERY PROTECTION SYSTEM AND METHOD THEREOF - A battery protection method is provided for preventing a main battery set from being damaged by a current from a load, and for lengthening the lifespan of the main battery set. The method includes the steps of: providing an auxiliary battery set; determining whether to recycle energy of the load, and performing a charging mode if affirmative; and transferring energy from the load to the auxiliary battery set when performing the charging mode. The method prevents the main battery set from being damaged due to charging at a high C rate, transfers possible damage due to the high current charging to the auxiliary battery set, lengthens the lifespan of the main battery set, and reduces the overall cost and difficulty of the maintenance of the main battery set by shifting the focus of the maintenance from the main battery set to the auxiliary battery set. | 06-30-2011 |
20110163699 | Battery And Ultracapacitor Device And Method of Use - A battery and ultracapacitor device for use in a vehicle includes a positive electrode, a first negative electrode, a second negative electrode, a first separator disposed between the positive electrode and the first and second negative electrodes, and a controller communicating with the positive electrode, the first negative electrode, and the second negative electrode. A first negative electrode has a first composition and communicates with the first positive electrode. The second negative electrode has a second composition and is adjacent to the first negative electrode and a second separator. The second negative electrode communicates with the positive electrode and the first negative electrode. The first negative electrode comprises a secondary battery negative electrode. The second negative electrode comprises an ultracapacitor negative electrode. | 07-07-2011 |
20110163700 | METHODS AND SYSTEMS RELATED TO DESULFATION OF A BATTERY - Desulfation of a battery. At least some of the illustrative embodiments are methods of inducing ringing across terminals of a battery to reduce and/or reverse the build up sulfate crystals on the battery plates. | 07-07-2011 |
20110163701 | Battery Pack for Cordless Power Tools - A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection circuits, methodologies and devices to protect against fault conditions within the pack, as the pack is operatively attached to and providing power to the power tool, and/or as the pack is operatively attached to and being charged by the charger. | 07-07-2011 |
20110187298 | FUEL CELL SYSTEM AND MOTOR DRIVING METHOD - A motor can be driven while reducing the power loss of the entire system where a plurality of devices that causes power losses exists. The system is provided with an inverter connected to a motor, a first converter that is connected between a fuel cell and the inverter and sets an output voltage of the fuel cell, a second converter that is connected between a power storage device and the inverter and sets an input voltage Vin of the inverter, and a controller that controls the first converter and the second converter. Under the operating condition (torque, number of revolutions) required for the motor, an input voltage of the inverter which minimizes a power loss of at least one of the motor, the first converter, the second converter and the inverter is determined, and the determined input voltage is output as a necessary voltage for the inverter. | 08-04-2011 |
20110193504 | POWER CONVERTER CONTROL APPARATUS - Generation voltage control or generation torque control is performed as suitable control based on an external command or a load of a generator motor, to thereby prevent a rapid change of a generation torque or excessive power generation. A power converter control apparatus includes: a power conversion unit including a bridge circuit for controlling energization of an armature winding and a field circuit for controlling energization of a field winding; and a control device including B-terminal voltage detection means, field current detection means, generation voltage control means, generation torque control means, and control selection means. The control selection means selects the one of the generation voltage control means and the generation torque control means based on one of a command from an outside and a load of the generator motor. | 08-11-2011 |
20110199028 | Moving Object, Wireless Power Feeding System, and Wireless Power Feeding Method - An object is to provide a moving object structure capable of reducing power loss caused when power is supplied from a power feeding device to a moving object by wireless communication. Another object is to provide a moving object structure capable of reducing the intensity of radio waves radiated to the surroundings. A moving object having a plurality of antennas receives radio waves transmitted from a power feeding device. At least one of the plurality of antennas is installed apart from the other antenna(s) of the moving object. Then, the radio waves transmitted from the power feeding device are received by all the plurality of antennas and converted into electric energy. Alternatively, the radio waves transmitted from the power feeding device are received by one or more selected from the plurality of antennas and converted into electric energy. | 08-18-2011 |
20110215743 | BATTERY CHARGING CIRCUIT AND CHARGING METHOD - A charging circuit is provided that charges a battery for supplying power to a motor drive system that includes a three-phase motor and a three-phase inverter for controlling the three-phase motor. The three-phase inverter includes first to third sets of switching elements. Each set corresponds to one of the three phases. The charging circuit includes a single-phase output transformer, a rectifier circuit, a line, and a controller. The single-phase output transformer includes a secondary side output section having a first terminal and a second terminal. The rectifier circuit is connected in parallel with the three-phase inverter and the battery. The rectifier circuit is also connected to the first terminal of the secondary side output section. The line connects a connecting point between the first set of the switching elements in the three-phase inverter with the second terminal of the secondary side output section. The controller performs on-off control of the first to third sets of the switching elements. During charging of the battery, the controller maintains the first set of the switching elements in an OFF state, and performs the on-off control of at least one set of the second and third sets of the switching elements. | 09-08-2011 |
20110221363 | COMBINED ELECTRIC DEVICE FOR POWERING AND CHARGING - The invention relates to a combined method and device for powering and charging, wherein said device comprises an AC motor ( | 09-15-2011 |
20110248653 | CONTROLLED POWER FADE FOR BATTERY POWERED DEVICES - A method is provided for operating a power tool having a motor powered by a battery. The method includes: delivering power from the battery to the motor in accordance with an operator input; detecting a condition of the power tool indicating a shutdown of the power is imminent; and fading the power delivered from the battery to the motor, in response to the detected condition, through the use of a controller residing in the power tool. | 10-13-2011 |
20110254474 | Rotating Electric Machine and Electric Vehicle - A rotating electric machine includes a stator having a stator coil and a rotor provided rotatably around a specific rotation axis with respect to the stator. The rotor includes a plurality of magnets, a plurality of magnetically-assisted salient pole members provided between poles of any adjacent two magnets from among the plurality of magnets, and a magnetoresistance variation unit provided in the magnetically-assisted salient pole member along an axial direction of the rotation axis at a position offset in a circumferential direction of the rotation axis from a q-axis passing through a salient pole center of the magnetically-assisted salient pole member. The amount of offset of the magnetoresistance variation unit from the q-axis varies depending on positions of the magnetically-assisted salient pole members so that torque fluctuations cancel each other when power is applied. | 10-20-2011 |
20110260659 | CONTROL APPARATUS OF ELECTRIC VEHICLE - A control apparatus of an electric vehicle, which is operable to be driven by supplying electric power from a battery to an electric motor to drive the electric motor and operable to perform regeneration charge, includes: a request torque calculating unit calculating a request torque of the electric motor; a motor control unit controlling the electric motor based on the request torque; and a torque suppression unit performing a feed forward control for setting the request torque based on a rotational angular speed of the electric motor so that an integrated value of a torque and a rotational angular speed of the electric motor at time when the electric motor is driven or the regeneration charge is performed is identical to an integrated value of the torque and the rotational angular speed stored at a point of time when the battery voltage or the battery current reaches the limit level. | 10-27-2011 |
20110273117 | Reciprocating Electric Tool - The invention provides a reciprocating electric tool ( | 11-10-2011 |
20110285331 | OSCILLATOR CIRCUIT WITH FREQUENCY SWEEP FUNCTION - With an oscillator circuit with a frequency sweep function, a first counter counts a reference clock for a number of counts that corresponds to a digital first setting signal, and generates a first count completion signal which is asserted on completion of the count. A D/A converter converts a digital second setting signal into an analog control voltage. A VCO oscillates with a frequency according to the control voltage. When the first count completion signal is asserted, the VCO is reset. An output combining unit receives the output signal of the VCO, generates the output signal of the oscillator circuit, and generates the first setting signal and the second setting signal. | 11-24-2011 |
20110304287 | CONTROL CIRCUIT AND METHOD FOR MANIPULATING A POWER TOOL - The present application discloses a control circuit for a power tool and a method for manipulating the power tool. The control circuit has a detection circuit for battery packs, a calculating control circuit, a battery capacity indicating circuit for indicating the calculation result of the battery capacity, and a current measure and calculating circuit for measuring the current flowing through motors. The calculation result further includes the voltages consumed by the battery pack internally and the discharge loop. The method for manipulating the power tool includes pressing the switch to electrically connect the motor and the battery pack, measuring the parameters of the battery pack and allowing the motor to operate or not according the measured parameters. Further, after the motor is in operation, the battery capacity is calculated and the results are displayed. | 12-15-2011 |
20110309776 | SEMICONDUCTOR CIRCUIT DEVICE INCLUDING SWITCHING ELEMENT - A semiconductor circuit device includes a semiconductor circuit including a switching element, a temperature monitoring unit, and a control unit. The temperature monitoring unit detects or estimates a temperature of a component connected to an inside or an outside of the semiconductor circuit. Here, the temperature of the component changes in accordance with a frequency of a current flowing through the component, and the frequency of the current flowing through the component changes in accordance with a switching frequency of the switching element. The control unit adjusts the switching frequency of the switching element such that the temperature of the component is equal to a target temperature. | 12-22-2011 |
20110316454 | ALTERNATING-CURRENT ELECTRIC MOTOR OF A COMBINED ELECTRIC DEVICE FOR POWERING AND CHARGING - The present invention relates to an alternating-current electric motor of a combined electric device for powering and charging, the said electric motor being formed by a stator connected to an electricity network of which the number of phases is lower than the number of phases of the said motor, the said charging current of the said network being injected via a connection point dividing each phase of the said stator connected to a phase of the said network into two half-windings, the said motor being characterized in that each half-winding of a phase comprises a plurality of coils wired together so as to reduce the magnetic linkage of each half-winding at the said connection point so that there exists an apparent non-zero inductance at the said connection point in charging mode of the said device. | 12-29-2011 |
20120013276 | ELECTROMAGNETIC MOTOR - An electromagnetic motor having a frame, and at least one disc rotatably mounted to the frame. At least one permanent magnet is mounted on the disc, and at least one electromagnet is mounted to the frame in magnetic proximity to the at least one permanent magnet. A battery is electrically coupled to the motor for powering the at least one electromagnet. A switch controls electrical power between the battery and the at least one electromagnet, and a sensing means is provided for controlling the switch to activate the at least one electromagnet with respect to the at least one permanent magnet to cause the at least one disc to rotate. Preferably, a generator is mechanically coupled to the motor and electrically coupled to the battery for generating electrical power to the battery, and a renewable energy source such as a photovoltaic cell is electrically coupled to the motor to supplement any net electrical loss. | 01-19-2012 |
20120019173 | METHOD AND ELECTRIC COMBINED DEVICE FOR POWERING AND CHARGING WITH COMPENSATION MEANS - The invention relates to a combined device and method for powering and charging, that comprises an AC motor ( | 01-26-2012 |
20120019174 | Drive System, Method for Operating a Drive System, and Use - A drive system and method for operating a drive system, including an electromotor, inverter, energy store, | 01-26-2012 |
20120019175 | SEALED BATTERY AND MANUFACTURING METHOD THEREOF, AND VEHICLE AND DEVICE HAVING THE SAME MOUNTED THEREON - The sealed battery has a battery container ( | 01-26-2012 |
20120025744 | BATTERY PACK AND ELETRICAL TRANSFER APPARATUS INCLUDING SAME - A battery pack includes: a first battery cell group including at least one high capacity battery cell; and a second battery cell group including at least one high output battery cell and being coupled in parallel to the first battery cell group, wherein the high output battery cell is configured to output a greater current than the high capacity battery cell, the high capacity battery cell is configured to store a greater amount of electric energy compared to the high output battery cell, and the battery pack is configured to operate in one of operational modes including: a high capacity mode for outputting electric energy stored in the first battery cell group; a high output mode for outputting electric energy stored in the second battery cell group; and a mutual charge mode for charging the first battery cell group or the second battery cell group. | 02-02-2012 |
20120043917 | Battery Connection System - A method of operating an electric vehicle including the steps of: (1) providing the electric vehicle (2) providing an electric load device on the electric vehicle (3) providing a first battery on the electric vehicle with a first state of charge (4) providing a second battery on the electric vehicle with a second state of charge lower than the first state of charge (5) determining an initial state of charge of the first battery (6) determining an initial state of charge of the second battery (7) connecting the first battery to the electric load device (8) measuring the current flow from the first battery (9) calculating an instantaneous state of charge of the first battery (10) comparing the instantaneous state of charge of the first battery with the initial state of charge of the second battery, and (11) when the instantaneous state of charge of the first battery reaches a predetermined percentage of the initial state of charge of the second battery, connecting the second battery in parallel with the first battery. | 02-23-2012 |
20120074877 | OVER-TEMPERATURE PROTECTION CIRCUIT FOR POWER DEVICES - An over-temperature protection circuit for a direct current (DC) electric tool includes a current detecting circuit electrically coupled to a battery pack, a power device control circuit electrically coupled to an electric motor of the DC electric tool and a power device for controlling the power state of the circuit. A computation control circuit controls the power supply of the motor according to the circuit current value detected by the current detecting circuit. When the electric motor is not in a speed control state, the allowable current passing through the over-temperature protection circuit of the DC electric tool cannot exceed a preset first current value. When the electric motor is in the speed control state, the allowable current passing through the over-temperature protection circuit of the DC electric tool cannot exceed a preset second current value less than the first current value. | 03-29-2012 |
20120074878 | METHOD AND SYSTEM FOR PREVENTION OF MOTOR REVERSAL - A power tool includes a brushless DC motor housed inside a tool housing, an input unit, and a control unit. The motor includes a rotor, a stator, and at least one sensor positioned to sense a state of the rotational position of the rotor inside the stator. A control unit controls commutation of the motor through a series of power switches coupled to the power supply. The control unit receives a current sensor state from the sensor and a user-selected speed from the input unit and determines whether the motor has reversed direction using the user-selected speed and the current sensor state. The control unit disables commutation of the motor if the motor has reversed direction until a proper current sensor state is received from the sensor. | 03-29-2012 |
20120086368 | LITHIUM-ION BATTERY CONTROLLING APPARATUS AND ELECTRIC VEHICLE - A lithium-ion battery controlling apparatus includes a controller. The controller is configured to raise an upper-limit voltage in response to capacity degradation of a lithium-ion battery which is configured to supply power to a load and receive power from the load. | 04-12-2012 |
20120086369 | PROPULSION CONTROL APPARATUS FOR ELECTRIC MOTOR CAR - A propulsion control apparatus for an electric motor car includes: an inverter apparatus connected to a DC power supply; a motor connected to an output of the inverter apparatus; a converter apparatus connected to an input of the inverter apparatus; and a power storage apparatus connected to an output of the converter apparatus, is configured to charge/discharge a part of power running power or regenerative power of the motor to/from the power storage apparatus. The converter apparatus includes a converter control unit that generates, based on a regeneration state signal as a signal indicating a suppression state of the regenerative power or regenerative torque or regenerative current equivalent to the regenerative power, a charging current command value, generates a charging and discharging current command value of the converter apparatus based on the charging current command value, and performs control. | 04-12-2012 |
20120091929 | DUTY RATIO CONTROL DEVICE, ELECTRIC POWER TOOL AND RECORDING MEDIUM - A duty ratio control device includes a duty ratio calculation unit and a parameter setting unit. The duty ratio calculation unit, when an acceleration manipulation is performed, calculates a control duty ratio per predetermined timing based on a value of at least one parameter so that a rotation speed of a motor mounted on an electric power tool reaches a target rotation speed corresponding to the acceleration manipulation. The control duty ratio is calculated to be larger as the value of the at least one parameter is larger. The parameter setting unit sets the value of the at least one parameter. The value of the at least one parameter set for a reacceleration manipulation is larger than the value of the at least one parameter set for an initial acceleration manipulation. | 04-19-2012 |
20120091930 | POWER SUPPLY SYSTEM, ELECTRIC VEHICLE PROVIDED WITH SAME, AND CONTROL METHOD OF POWER SUPPLY SYSTEM - When it is determined by a determining portion ( | 04-19-2012 |
20120098470 | ELECTRONIC CONTROL UNIT INCLUDING DISCHARGING CIRCUIT WITH PLURALITY OF RESISTORS CONNECTED IN SERIES - An electronic control unit mounted on a vehicle includes: a capacitor that smoothes voltage of a DC power source electrically isolated from a body of the vehicle; a resistor circuit including a plurality of resistors connected in series, which is connected in parallel to the capacitor to discharge electric charge stored in the capacitor; and a fault judging circuit that judges whether or not the resistor circuit is in a fault condition by comparing the voltage across the resistor included in the resistor circuit with a fault threshold value. The fault judging circuit is adapted to change the fault threshold value based on the voltage of the DC power source. | 04-26-2012 |
20120104980 | SWITCHED RELUCTANCE AND PM BRUSHLESS DC MOTOR DRIVE CONTROL FOR ELECTRIC VEHICLE APPLICATION - A method of operating an electrical machine having first and second phase windings. The method includes: (1) applying positive first current to the first phase winding while the first phase winding's back electromotive force (emf) is positive; (2) applying negative second current to the first phase winding while the first phase winding's back emf is negative; and (3) applying positive third current to the second phase winding while the second phase winding's back emf is positive. The first current is conducted through a circuit composed of a battery, the first phase winding, and a first switch. The second current is conducted through a circuit composed of a first capacitive storage element, the battery, the first phase winding, and a second switch, and the third current is conducted through a circuit composed of the battery, the second phase winding, and a third switch. | 05-03-2012 |
20120112670 | VACUUM CLEANER AND METHOD FOR CONTROLLING AN ELECTRIC MOTOR - A vacuum cleaner and a method for controlling the motor power of a vacuum cleaner are disclosed. The vacuum cleaner comprises an electric motor and an electric power supply for providing electric power to the electric motor. Furthermore, a voltage measuring means for measuring a motor voltage over the electric motor and a current measuring means for measuring a motor current flowing through the electric motor are provided. The vacuum cleaner further comprises a control means for controlling, based on the measured voltage and the measured current, the electric power provided to the electric motor from the electric power supply towards a target motor power value. | 05-10-2012 |
20120126728 | INTEGRATED ELECTRIC MACHINE AND SILICON CARBIDE POWER CONVERTER ASSEMBLY AND METHOD OF MAKING SAME - An electric drive system comprising an electric machine comprising a rotor and a stator, a power converter electrically coupled to the electric machine and configured to convert a DC link voltage to an AC output voltage to drive the electric machine, and a single cooling loop, wherein the electric machine and the power converter are integrated within the single cooling loop. | 05-24-2012 |
20120133309 | BATTERY POWER SYSTEM - A battery power system, adapted for driving a motor system of a power unit with respect to at least one power mode signal and at least one motor control signal generated from the motor system, which comprises: a battery pack, an electrolytic capacitor, a boost converter, a first contactor, a first switch, an ultracapacitor, a first diode, a second contactor, a second switch, a current limiting element, a plurality of measuring elements, and an electrical energy controller; wherein the electrical energy controller is enabled to analyze the electrical power level of the ultracapacitor according the power mode signal, the motor control signal and the voltage/current signals generated from the plural measuring elements while using the result of the analysis to control the current directions and conductivity of the boost converter, the first contactor, the second contactor, the first switch and the second switch so as to achieve a variety of control modes accordingly. | 05-31-2012 |
20120133310 | RECONFIGURABLE BATTERY - A reconfigurable battery has at least one bank of statically joined series connected battery cells, each cell including a positive and a negative pole. The poles connect through switches to respective output connections. Activating a set of processor controlled switches reconfigures at least some of the battery cells into a configuration to provide a voltage across the output connections. The output battery voltage may vary intermediately between open circuit voltage and the maximum voltage produced by the series connected battery cells. An alternative configuration of switches divides groups of series connected battery cells into separate battery banks that permit other battery cell configurations. Duty cycle modulation of the switches allows intermediate control of output voltage with reduced switching transients. Reconfigurable battery cells used in combination with an electric motor permit selectable speed control and battery regeneration schemes matched to motor output. | 05-31-2012 |
20120139456 | ELECTRIC OPERATING MACHINE - When a main switch ( | 06-07-2012 |
20120153876 | Blower Apparatus having an Electric Drive Motor - The invention relates to a blower apparatus ( | 06-21-2012 |
20120153877 | SYSTEM FOR CAUSING TEMPERATURE RISE IN BATTERY - A battery temperature rise causing system has a converting unit for converting voltage of electric power held in one of a rechargeable battery and a capacitor and applies the converted voltage to the other one, and a control unit controlling the converting unit to alternately perform first transfer of electric power from the battery to the capacitor and second transfer of electric power from the capacitor to the battery while changing the first transfer for the second transfer each time the battery voltage reaches a lower limit and changing the second transfer for the first transfer each time the battery voltage reaches an upper limit, and to increase temperature of the battery due to heat generated by electric current flowing through the battery during the electric power transfer. | 06-21-2012 |
20120153878 | APPARATUS FOR ENERGY TRANSFER USING CONVERTER AND METHOD OF MANUFACTURING SAME - According to an aspect of the invention, a motor drive circuit includes a first energy storage device configured to supply electrical energy, a bi-directional DC-to-DC voltage converter coupled to the first energy storage device, a voltage inverter coupled to the bi-directional DC-to-DC voltage converter, and an input device configured to receive electrical energy from an external energy source. The motor drive circuit further includes a coupling system coupled to the input device, to the first energy storage device, and to the bi-directional DC-to-DC voltage converter. The coupling system has a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and has a second configuration configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter. | 06-21-2012 |
20120153879 | APPARATUS FOR ENERGY TRANSFER USING CONVERTER AND METHOD OF MANUFACTURING SAME - According to an aspect of the invention, a motor drive circuit includes a first energy storage device configured to supply electrical energy, a bi-directional DC-to-DC voltage converter coupled to the first energy storage device, a voltage inverter coupled to the bi-directional DC-to-DC voltage converter, and an input device configured to receive electrical energy from an external energy source. The motor drive circuit further includes a coupling system coupled to the input device, to the first energy storage device, and to the bi-directional DC-to-DC voltage converter. The coupling system has a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and has a second configuration configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter. | 06-21-2012 |
20120161677 | BATTERY MODULE, BATTERY SYSTEM AND ELECTRICALLY DRIVEN VEHICLE - A battery module includes a plurality of battery cells, a detection circuit, a communication unit, and a printed circuit board. The detection circuit and the communication circuit are mounted on the common printed circuit board. The detection circuit detects a voltage of each of the battery cells in the battery module, and feeds the detected voltage to the communication circuit. The communication circuit is connected to a communication circuit in another battery module or a battery ECU. Thus, the communication circuit in the battery module and the communication circuit in the other battery module or the battery ECU can communicate with each other. | 06-28-2012 |
20120169257 | Power Switching Circuitry - Power switching circuitry has a heat absorbing structure, and a heat conductive substrate having power switching components on a first surface and a second surface adjacent to the heat absorbing structure. Electrically conductive members, comprising first and second members, are on the first surface and extend along a first axis orthogonal to the heat conductive substrate. The second portion is more remote from the heat conductive substrate, and has a smaller cross-sectional area than, the first portion to define a shoulder region orthogonal to the first axis. A circuit board is located on the shoulder regions, with the second portions extending through the circuit board. An urging mechanism urges the circuit board against the shoulder regions, whereby the electrically conductive members provide a current path between the heat conductive substrate and the circuit board, and urge the heat conductive substrate into thermal contact with the heat absorbing structure. | 07-05-2012 |
20120169258 | DISCHARGE STATE INDICATOR - A circuit for displaying the state of a battery that is almost discharged features a battery, an inductive load, and a controllable switch connected in series. The circuit also includes a display element connected in series with the inductive load and the battery. The controllable switch is opened when a voltage of the battery is lower than a first threshold level and is only closed again when the voltage of the battery is greater than a second threshold level. The circuit may also include a control circuit having a comparator which compares the voltage of the battery with the first threshold level and the second threshold level and triggers the controllable switch accordingly. | 07-05-2012 |
20120181953 | DUAL BIPOLAR MAGNETIC FIELD FOR ROTARY HIGH-VOLTAGE CONTACTOR IN AUTOMOTIVE LITHIUM-ION BATTERY SYSTEMS - A device and method for operating automotive battery system relays and related switches. By aligning a magnetic field with a direction of current flow in a contact plate disposed between magnets that are producing the field, a generated Lorentz force can be used to promote arc extinguishing during a relay opening sequence, while simultaneously reducing the tendency of the Lorentz forces to interfere with the operation of a solenoid or other switch-activating mechanisms. By using a rotary-based mechanism to establish contact between a contact plate and current-carrying terminals, the likelihood of inadvertent opening of the relay is reduced. Such devices and methods may be used in conjunction with hybrid-powered and electric-powered vehicles. | 07-19-2012 |
20120181954 | ENERGY STORAGE DEVICE - Energy storage device for storing electric energy for the partial or complete electrical drive of a vehicle, wherein the device has energy storages and power storages, a drive unit of a vehicle with an energy storage device as well as method for operating an energy storage device. | 07-19-2012 |
20120200241 | Control Device for Vehicle Electric Drive Motor and Vehicle With the Same - A controller for vector-controlled motor of vehicle judges whether a battery needs to be warmed up in accordance with an output of a battery temperature sensor, and when the battery needs to be warmed up, in situation (i) where the vehicle is stopped, sets a q-axis current value of the motor at zero, or when a brake is released from the situation (i), sets a q-axis current at a value corresponding to a drive torque for a vehicle creep operation, and sets a d-axis current at a value for battery warm-up. When the battery needs to be warmed up in situation (ii) where the vehicle is running, the controller sets a q-axis current at a value corresponding to a drive torque of vehicle running and sets a d-axis current at a value for the battery warm-up in relation to the q-axis current value. | 08-09-2012 |
20120212159 | CONTROLLER FOR ELECTRICAL POWER STEERING APPARATUS - The electrical power steering apparatus | 08-23-2012 |
20120212160 | DISCHARGE CONTROL DEVICE OF ELECTRIC POWER CONVERSION SYSTEM - In an electric power conversion system having a discharge control device capable of discharging a voltage charged in a capacitor to a voltage of not more than a predetermined voltage, a linear regulator decreases a voltage of the capacitor and outputs the decreased voltage to a drive unit at a bottom arm in a U phase. A flyback converter for discharging use inputs an output of the linear regulator, and outputs electric power to a drive unit at an upper arm in the U phase. When detecting that own vehicle collides with an obstacle, the discharge control device starts to execute discharge control of the capacitor by turning off a photo coupler and turning on the linear regulator. | 08-23-2012 |
20120217905 | Electric Vehicle Self Charging System - A self-charging system for an electric vehicle comprising: an alternator system, or said alternator system is connected to one axle of the vehicle; a distribution module, where the distribution module receives power from the alternator system; and a battery charger apparatus, where said battery charger apparatus charges a battery pack, when the battery pack power drops to a predetermined level and the charger receives power via the distribution module. The self-charging system may further include a motor, where the motor provides power to a drive chain of the vehicle and receives power from the battery pack. The motor receives power supplied by the alternator system via the distribution module after the battery pack is fully charged. Preferably, the alternator system initiates supply of power to the distribution module at a predetermined RPM. | 08-30-2012 |
20120217906 | FAILURE INFORMATION TRANSMISSION APPARATUS - A failure information transmission apparatus includes a transmission circuit and a reception circuit. The transmission circuit transmits a plurality of pieces of failure information related to a plurality of failures as pulse signals different from one another via the same transmission path. The reception circuit receives the pulse signals transmitted by the transmission circuit via the same transmission path and identifies the failure information based on the pulse signal received. If the plurality of failures occurs at the same time, the transmission circuit transmits preferentially transmits failure information with higher priority of transmission. | 08-30-2012 |
20120223662 | MOTOR SPEED CONTROL SYSTEM - This present utility involves a motor control system which can be connected with Wi-Fi and Bluetooth. It comprises of a motor, a power supply and a cooling fan, wherein the power supply, the motor and the control circuit board are connected with the cooling fan. There is also a speed control circuit connected with the cooling fan, wherein there is a mode of Wi-Fi and/or Bluetooth in the control circuit, of which it can connect with all kinds of device which has mode of Wi-Fi and/or Bluetooth. This present utility can connect with electronic devices via Wi-Fi and/or Bluetooth for processing mode conversion thereof. | 09-06-2012 |
20120223663 | CONTROLLABLE DIRECT CURRENT MOTOR HAVING A MODIFIED CHARACTERISTIC - A direct-current motor is disclosed, preferably in the form of an EC motor, which has a matching arrangement in order to vary its rotation-speed/torque characteristic, having a permanently effective control circuit for controlling the motor, which control circuit is programmed such that the rotation-speed/torque characteristic is permanently varied with respect to rated operation or operation with the matching arrangement. | 09-06-2012 |
20120229055 | POWER CONVERTER AND POWER CONVERTER OF ROLLING STOCK - A power converter includes a first electric power conversion unit having an inverter for converting a first DC electric power to an AC electric power, an AC circuit connected to the first electric power conversion means; | 09-13-2012 |
20120229056 | BATTERY PACK WITH SAFETY DEVICE, CONTROL DEVICE AND CONTROL METHOD - A battery pack ( | 09-13-2012 |
20120229057 | ELECTRIC VEHICLE - An electric vehicle may include a main battery, a charging system electronic device, an electrically powered system-based electronic device, a first high-voltage electric wire; and a second high-voltage electric wire. The electrically powered system-based electronic device and the charging system electronic device may be sequentially disposed in parallel. The electric vehicle may further include a first junction relay capable of isolating the first high-voltage electric wire; and a second junction relay capable of isolating the second high-voltage electric wire. The first junction relay is disposed between the main battery and the charging system electronic device, and a first pre-charge relay which bypasses the first junction relay is disposed in parallel with the first junction relay, and the second junction relay is disposed between the charging system electronic device and the electrically powered system-based electronic device. | 09-13-2012 |
20120235604 | INVERTER DEVICE OF ROTATING ELECTRICAL MACHINE, AND DRIVING METHOD FOR ROTATING ELECTRICAL MACHINE - An inverter device of a rotating electrical machine drives a multiphase rotating electrical machine having the variable number of rotations using a switching element provided for each phase. An example of the inverter device of the rotating electrical machine includes: a frequency setting unit for determining and setting a carrier frequency of a carrier signal for use in driving the switching element for each phase depending on the state of each phase of the rotating electrical machine for each specified electrical angle obtained by equally dividing a cycle of an electrical angle; and a signal generation unit for generating a drive signal for drive of the switching element of each phase using the carrier signal of the carrier frequency set for each phase by the frequency setting unit. The carrier frequency of each phase is an integral multiple of the phase voltage frequency at the specified electrical angle. | 09-20-2012 |
20120235605 | INVERTER/CHARGER INTEGRATED DEVICE AND METHOD FOR CONTROLLING THE SAME - An inverter/charger integrated device is provided. The inverter/charger integrated device includes: a three-phase motor; a rectifying unit configured to rectify AC power for charging a battery and output the rectified AC power to a neutral point of the three-phase motor; a rectifier/inverter integrated unit configured to be connected to the rectifying unit and charge the battery; and a control unit configured to control the charging of the battery and an operation of the three-phase motor. | 09-20-2012 |
20120242259 | ELECTRIC OPERATING MACHINE - The power circuit comprises a voltage conversion part converting an input voltage entered in accordance with a voltage of a power source to generate an output voltage and outputting the generated output voltage to the motor and a current detection part outputting a first signal in accordance with a current flowing through a given part of the power circuit. The voltage conversion part lowers the voltage value of new output voltage being generated when the current detection part outputs the first signal. | 09-27-2012 |
20120249020 | DRIVE CIRCUIT FOR SWITCHING ELEMENT - A drive circuit for a switching element includes a constant-current control unit and a restriction unit. The constant-current control unit performs a constant-current control for charging an open/close control terminal of a switching element to be driven which is a voltage-controlled switching element with electric charge for turning on the switching element. The restriction unit restricts, to a reference voltage, a voltage between the open/close control terminal and a first end of a pair of ends of a current flow path of the switching element for a predetermined period following a start of the constant-current control within a charging process period during which the open/close control terminal is charged with the electric charge such that the switching element is turned on. | 10-04-2012 |
20120249021 | INFORMATION TRANSMISSION APPARATUS - A transmission circuit transmits a header pulse signal which has signal length being equal to or more than twice as long as reference time, pulse period having predetermined ratio thereof to the signal length, and pulse stop period being successive and longer than the reference time via transmission path. The transmission circuit subsequently and successively transmits a plurality of data pulse signals which have signal length being the same as the reference time, pulse period having predetermined ratio thereof to the signal length associated with data, and pulse stop period being located before and after the pulse period via the transmission path. A reception circuit receives pulse signals via the transmission path, detects the header pulse signal based on the pulse stop period of the received pulse signal, and obtains a plurality of pieces of data based on the pulse period of pulse signals following the header pulse signal. | 10-04-2012 |
20120256568 | MULTI-PORT RECONFIGURABLE BATTERY - A multi-port reconfigurable battery has at least one bank of statically joined series connected battery cells, each including a positive and negative pole connected through switches to respective output connections on at least one port. Processor controlled switches reconfigure the cells to provide power for electrical loads on one or more ports and simultaneously provide charging on one or more other ports. An alternative configuration divides groups of series connected cells into separate battery banks that permit other configurations. Ports are configurable to share one electrically common connection with other ports providing a simplified configuration (multi-tap reconfigurable battery). Applications include selectable motor speed control and battery regeneration schemes matched to motor output, and single or multiphase AC power output at selectable frequencies for use as an Uninterruptible Power Supply. The battery is also described as a power source for a forced-air induction system (e.g. electric supercharger) for a combustion engine. | 10-11-2012 |
20120256569 | Battery Control Device and Motor Drive System - In a memory, the surface temperature and the internal resistance of an assembled battery detected under the condition where a difference between the surface and the internal temperature is within a predetermined value are stored, and an internal temperature diagnosis unit that diagnoses whether or not the internal temperature estimated by an internal temperature estimation unit is correct, detects the internal resistance with an internal resistance calculation unit when the internal temperature estimation unit estimates the internal temperature, searches for an internal resistance corresponding to the surface temperature equal to the estimated internal temperature value from among the stored internal resistances, and diagnoses the estimated internal temperature value based upon the result of comparison of a search result of the internal resistance and the internal resistance detected during internal temperature estimation. | 10-11-2012 |
20120262096 | ELECTRIC VEHICLE AND OPERATING METHOD OF THE SAME - Disclosed herein is an electric vehicle and a driving method thereof. According to the present disclosure, it may be possible to drive an electric vehicle using a drive inverter and coils within a three-phase motor, and charge a battery using them as a charging device. According to the present disclosure, coils included in a motor control device and switching elements within an inverter may be used, and the use of the inductors and switching elements required for the charging device may be reduced. | 10-18-2012 |
20120268044 | High Efficiency All-Electric Vehicle Propulsion System - An all-electric vehicle propulsion system using a readily available high frequency AC Motor such as a 3-phase 400 Hz motor. A step-down gearbox increases torque and power thus decreasing the need for a high-power motor. Also, with the controllers of the invention, readily available, inexpensive batteries can be used as a primary source of energy. An efficient C&A-DC/DC step-up converter to power a high-efficiency motor driver can force the AC-motor windings circulate current in a resonance mode at around 220 volts. While 400 Hz and 220 volts are preferred, any voltage or frequency may be used, as well as any number of phases. Vehicle speed and torque can controlled by changing frequency and voltage applied to the motor usually using a variable resistor. | 10-25-2012 |
20120274244 | ELECTRIC OPERATING MACHINE - An electric operating machine comprising a motor and a power circuit driving the motor by the electric power supplied from a battery. The power circuit comprises a voltage conversion part converting an input voltage entered in accordance with a voltage of said battery to generate an output voltage and outputting said generated output voltage to said motor. The power circuit is structured so that the voltage value of said output voltage of said voltage conversion part is changeable. | 11-01-2012 |
20120274245 | Power Tool and Battery Pack - A power tool is connectable to a battery pack including a secondary battery. The power tool includes a motor and a prohibiting unit. The motor is driven with an electrical power supplied from the secondary battery. The prohibiting unit prohibits the supply of the electrical power to the motor based on a drop amount of a voltage of the secondary battery. | 11-01-2012 |
20120274246 | ELECTRIC DRIVE AND BATTERY CHARGING POWER ELECTRONIC SYSTEM - An electric drive that provides power from a DC battery to an AC motor and for charging the DC battery when power is being supplied through the motor windings such that no secondary on-board system for charging the battery or specialized charging station is required. A DC battery is in electronic communication with a three-phase inverter that converts DC power received from the battery into an alternating current when a switch is placed into a closed position. The three-phase inverter is in communication with a three-phase stator such that it supplies the stator with the converted AC power. Once power is received by the stator an air flux and electronic current are produced that interact to produce torque on a rotor creating mechanical energy. When the switch is placed in an open position, the three phase stator discontinues supplying almost all the power to the rotor but rather receives alternating current from an already available three-phase voltage network. The alternating current is transferred into the inverter where it is converted into a direct current that is supplied to the battery to recharge the battery. A control device is provided to control how much power is drawn from and supplied to the battery. | 11-01-2012 |
20120286705 | APPARATUS AND METHOD FOR CONTROLLING ROTARY ELECTRIC MACHINE - A control apparatus controlling rotary electric machine includes a conversion circuit converting a DC voltage into an AC voltage so as to rotate the rotary electric machine and a control unit. The conversion circuit includes a high-side switch, a low-side switch that connected to stator windings of the rotary electric machine. The control unit controls the conversion circuit such that both high-side/ low-side switches are controlled to be successively ON and OFF at every predetermined periods for converting the DC voltage into AC voltage. The control unit dynamically controls high-side and low-side neutral switches each connected to a neutral point of the stator windings so as to increase or decrease a voltage at the neutral point whereby current flowing through the rotary electric machine is adjusted. As a result, a torque of the rotary electric machine is optimized. | 11-15-2012 |
20120286706 | BATTERY MODULE, AND ELECTRIC VEHICLE, MOVABLE BODY, BATTERY SYSTEM, POWER STORAGE DEVICE, AND POWER SUPPLY DEVICE INCLUDING THE SAME - A plate-shaped portion of each of separators has a cross-sectional shape bent in a concavo-convex shape in a vertical direction. The plate-shaped portion of each of the separators has a flat cross-sectional shape. The plurality of separators are arranged parallel to one another to alternately line up. One surface of each of the battery cells abuts on the plate-shaped portion of the separator, and the other surface abuts on the plate-shaped portion of the separator. Thus, a spacing between the battery cells, which are adjacent to each other with the separator sandwiched therebetween, becomes equal to the thickness of the plate-shaped portion, and a spacing between the battery cells, which are adjacent to each other with the separator sandwiched therebetween, becomes equal to the thickness of the plate-shaped portion. | 11-15-2012 |
20120293095 | CONTROL UNIT OF ROTARY DEVICE - In a control unit that controls a control amount of a rotary device by controlling on and off states of switching elements of a power converting circuit, a relative rate predicting section temporally sets operation states of the power converting circuit and predicts a relative rate of a control amount according to each of the temporally set operation states relative to a command value thereof. Each of the operation states is indicated by a voltage vector defined by the on and off states of the switching elements. A determining section determines an operation state of the power converting circuit based on the relative rate predicted by the relative rate predicting section. An operating section operates the power converting circuit to the operation state determined by the determining section. | 11-22-2012 |
20120293096 | Power Tool and Battery Pack for Use Therein - To prevent or suppress a secondary battery used in a power tool from being deteriorated, a battery property, such as internal resistance of the battery, and a battery status of the secondary battery, such as a voltage developed across the battery, are detected. Based on the battery property and the battery status as detected, a current flowing in the motor of the power tool is controlled. | 11-22-2012 |
20120313559 | BATTERY MODULE, ELECTRONIC APPARATUS, ELECTRIC POWER STORAGE SYSTEM, ELECTRIC POWER SYSTEM, AND ELECTRIC VEHICLE - A battery module includes a plurality of battery supports each having a face orthogonal to the stacking direction, and a side face, the battery supports each containing a plurality of cells and being made of an insulating material, a coupling part that is located between the face of one battery support and the face of another adjacent battery support, and contracts in the stacking direction upon stacking the battery supports to bring the faces of the battery supports into intimate contact, a group of cells including the battery supports stacked with the coupling part being placed between the battery supports, a base plate, and first and second regulating plates placed facing each other in a standing position on the base plate, the first and second regulating plates sandwiching the group of cells arranged between the first and second regulating plates and stacked with the coupling part being contracted. | 12-13-2012 |
20120313560 | HIGH-CURRENT BATTERY SYSTEM AND METHOD FOR CONTROLLING A HIGH-CURRENT BATTERY SYSTEM - The present invention relates to a high-current battery system in which a high operating current flows, in particular for vehicle drives. The high-current battery system has a battery system monitoring electronics unit and a plurality of battery modules, each module including at least one rechargeable battery cell and being electrically connected in series by means of an operating current line such that an operating current flows through the operating current line during operation. At least one of the battery modules is designed as a bypass battery module which comprises a bypass switch and a bypass line, which are designed and disposed such that the battery module is electrically bridged by the bypass line after the bypass switch is switched from a normal operating position into a bypass position, so that the operating current flows through the bypass line. For each bypass battery module, the battery system monitoring electronics unit incorporates a module monitoring unit which monitors the associated battery module and detects a fault state of the module. Upon detection of a fault state of a battery module by one of the module monitoring units, the battery system monitoring electronics unit measures the current flow in the operating current line and switches the bypass switch of the battery module in question from the normal operating position into the bypass position at a time at which the current flow in the operating current line is less than a predetermined limit value. | 12-13-2012 |
20120313561 | MOTOR DRIVE UNIT - A switching element is switched off after having been switched on for only a short time interval called a first predetermined time interval, and a determination is made, based on a mode of a change in a contact point potential (a regeneration voltage) between an electric motor and the switching element when the switching element as switched off, as to whether or not one of the electric motor and the switching element has failed. Next, the switching element is switched on for a time interval called a second predetermined time interval, which is longer than the first predetermined time interval, and a determination is made, based on the magnitude of the contact point potential at that time, as to which one of the electric motor and the switching element has failed. It is thus possible for a failure of the switching element and electric motor to be detected. | 12-13-2012 |
20120313562 | BATTERY CONTROL DEVICE, BATTERY SYSTEM, ELECTRIC VEHICLE, CHARGE CONTROL DEVICE, BATTERY CHARGER, MOVABLE BODY, POWER SUPPLY SYSTEM, POWER STORAGE DEVICE, AND POWER SUPPLY DEVICE - A battery control device is connected to a plurality of battery cells. The battery control device includes a voltage value calculator, a communicator, and a voltage value updater. The voltage value calculator calculates, based on a current flowing through a plurality of battery cells, a voltage of each battery cell. If the battery control device is connected to a charge control device, the communicator receives information relating to a voltage of each battery cell, which has been detected by a voltage detector in the charge control device, from the charge control device. The voltage value updater updates the voltage calculated by the voltage value calculator based on the voltage information received by the communicator. | 12-13-2012 |
20120319626 | BATTERY OPERATED ELECTRIC MOTOR IN A WORK APPARATUS - An electric motor includes an arrangement of windings provided for driving the rotor, with the windings being connected to an energy source to develop torque which drives the rotor. The electric circuits of corresponding ones of the a windings each have a potential point, the voltage (U | 12-20-2012 |
20130002173 | TRACTION MOTOR CONTROLLER WITH DISSIPATION MODE - An apparatus in an electric vehicle including a propulsion electric motor powered by energy from an energy storage system, including a field oriented motor controller generating motor control signals for the electric motor, the motor control signals responsive to a flux command signal and a torque command signal; a torque command calculator, coupled to the motor controller, generating the torque command signal to command a desired torque; an optimal efficiency controller, coupled to the torque command calculator, generating an operating efficiency flux to operate the electric motor at a first determinable efficiency using a first power from the energy storage system while providing the desired torque; an excess dissipation controller generating an inefficient flux to operate the electric motor at a second determinable efficiency using a second power from the energy storage system independent of the desired torque wherein the second power is greater than the first power; and a mode controller setting the flux command signal using one of the optimal efficiency flux and the inefficient flux. | 01-03-2013 |
20130002174 | CONTROL DEVICE FOR MOTOR DRIVE SYSTEM AND VEHICLE INCORPORATING THE SAME - A control device for a motor drive system including an AC motor having a magnet in a rotor, a converter, and an inverter generates a step-up command value for the converter based on a torque command value for the AC motor. The control device determines whether or not to carry out field-weakening control for increasing a current in a direction weakening force of a magnet that is supplied from the inverter to the AC motor, based on the step-up command value and a state of drive of the AC motor. When field-weakening control should be carried out and when an absolute value of the torque command value is smaller than a threshold value, the control device further increases the generated step-up command value. By doing so, an amount of a field-weakening current can be decreased and therefore efficiency of the motor drive system can be improved. | 01-03-2013 |
20130002175 | ELECTRIC POWER TOOL - An electric power tool is included in a plurality of types of electric power tools. The plurality of types of electric power tools comprise a plurality of types of battery packs having different rated output voltages and a plurality of types of tool bodies, the housings of which are equipped with an attached part on which each of the battery packs is mounted in a freely removable manner. The attached part possessed by the plurality of types of tool bodies equipped with motors having different voltage characteristics is formed so as to be able to mount an arbitrary one of the plurality of types of battery packs having different rated output voltages. This makes it possible to widen the range of available battery packs and enhance convenience. | 01-03-2013 |
20130015789 | ELECTRIC TOOLAANM Miyazaki; HiroshiAACI ShigaAACO JPAAGP Miyazaki; Hiroshi Shiga JPAANM Shimizu; HidenoriAACI ShigaAACO JPAAGP Shimizu; Hidenori Shiga JPAANM Kawai; AkiraAACI ShigaAACO JPAAGP Kawai; Akira Shiga JPAANM Okada; MasaakiAACI ShigaAACO JPAAGP Okada; Masaaki Shiga JP - An electric tool comprises a removable battery pack | 01-17-2013 |
20130020970 | Control System and Control Method for Electric Bicycle - A system and methods for controlling an electric motor in an electric vehicle. The system includes a battery management system and a motor controller. The battery management system monitors output voltage of each individual cell unit in a battery pack with a plurality of cell units and generates a state signal and a count value according to the monitored output voltages. The motor controller receives the state signal and the count value from the battery management system and controls the output current to the electrical motor. The battery management system generates the state signal in a first state if none of the monitored output voltages is below a predefined voltage for longer than a predefined period. The battery management system increases the count value each time a monitored output voltage drops below the predefined voltage. The cell units in the battery pack are protected by the battery management system. | 01-24-2013 |
20130038251 | MOTOR CONTROL DEVICE - A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch element supplying a current from the battery to the drive circuit when being turned on, the switch element cutting off the current from the battery to the drive circuit when being turned off, a rotation speed detector that detects a rotation speed of the electric motor, and a controller that operates the drive circuit to control the electric motor. The controller turns on the switch element when the rotation speed of the electric motor, which is detected by the rotation speed detector, is greater than or equal to a first predetermined value during stopping of the control of the electric motor. | 02-14-2013 |
20130038252 | METHOD FOR REDUCING THE STARTING CURRENT OF A MULTI-PHASE MACHINE OPERATED BY BLOCK COMMUTATION - In a method for reducing the starting current of a multi-phase machine operated by block commutation, which includes a battery, one high side switch for each phase, a low side switch and a phase winding as well as a rotor, the high side switch assigned to one current phase or the low side switch assigned to one current phase is held in the closed state, and the low side switches or the high side switches assigned to the other current phases are alternately controlled. | 02-14-2013 |
20130038253 | MOTOR DEVICE AND POWER TOOL - A motor device includes an electric motor operated when supplied with power from a rechargeable battery, a voltage detection unit that detects voltage of the rechargeable battery, a determination unit that performs an abnormality determination based on a comparison of the voltage of the rechargeable battery, which is detected by the voltage detection unit, and a determination value, a control unit that controls the operation of the electric motor in accordance with the determination result of the determination unit, and a temperature detection unit that detects the usage environment temperature. The determination unit changes the determination value in accordance with the temperature detected by the temperature detection unit and performs the abnormality determination based on the changed determination value. | 02-14-2013 |
20130049648 | DIRECT CURRENT BUS MANAGEMENT CONTROLLER - A direct current bus management system can include a power management and distribution unit, having a source management section, a bus management section coupled to the source management section, a load management section coupled to the bus management section, a DC bus coupled to the power management and distribution unit, a plurality of DC sources coupled to the source management section and a plurality of loads coupled to the load management section, wherein the bus management section is configured to reconfigure excess DC power on the DC bus from the DC inputs from the plurality of DC sources based on a plurality of priorities, a plurality of feedback signals and a plurality of system parameters. | 02-28-2013 |
20130057182 | SELF-CONTAINED MOTORIZATION SYSTEM - The invention relates to a self-contained motorization system comprising at least one electric motor ( | 03-07-2013 |
20130069564 | POWER CONTROLLER - There is provided a power controller including a drive circuit connected to a DC power supply to apply a first voltage to the drive circuit and configured to supply power to an external load, a current detection circuit configured to detect a current flowing in the drive circuit by converting the current into a second voltage corresponding to the current, and a current-voltage control unit configured to generate a reference voltage corresponding to a limit value of the current flowing in the drive circuit when the first voltage is applied to the drive circuit, and configured to control the drive circuit to operate in a desired current according to the first voltage, based on a comparison result of the reference voltage and the second voltage. | 03-21-2013 |
20130069565 | Circuit For A Small Electric Appliance With An Accumulator And Method For Measuring A Charging Current - A circuit for a small electric appliance is disclosed. The circuit includes a battery (B); a control circuit (uC) for measuring the charging current of the battery (B); a DC-DC converter (DC/DC) which supplies the control circuit (uC) from the battery; and a current sensing resistor (R | 03-21-2013 |
20130076277 | SYSTEM AND METHOD FOR CURRENT ESTIMATION FOR OPERATION OF ELECTRIC MOTORS - Methodologies and systems are provided for current estimation in electric motor. The system comprises an electric motor having sensors for sensing at least motor current, motor temperature and motor speed. A vehicle controller is coupled to the sensors and includes a closed-loop current control system for the electric motor having a current compensation circuit for providing a current compensation signal that is used to adjust a current command for the electric motor. The current compensation circuit includes a short-circuit current calculator for providing a short-circuit current value based upon the motor temperature and the motor speed, a compensation gain calculator for providing a gain compensation value based upon the motor speed, and circuitry for combining the motor current, the short-circuit current value and the gain compensation value to provide the current compensation signal. Methods for current estimation in electric motor are also provided. | 03-28-2013 |
20130076278 | METHOD AND APPARATUS FOR INCREASING THE RUN TIME OF AN ELECTRIC CART - A method and apparatus for improving the run duration of an electric motor powered by a battery pack is provided. The apparatus includes an electric motor having a rated motor voltage, a battery pack having an output voltage exceeding the rated motor voltage, and a motor controller which converts the output voltage to supply electrical power to the electric motor at a second voltage lower than the output voltage. | 03-28-2013 |
20130076279 | METHOD AND DEVICE FOR STARTING AN ELECTRIC MOTOR - A method for starting an electric motor having a rotor, comprising the following steps: —driving the rotor with a first torque in a first rotational direction, wherein a maximum value of the first torque is not higher than a maximum countertorque acting counter to the rotation of the rotor, so that the rotor comes to a standstill in a first stationary position; —driving the rotor starting from the first stationary position in a second rotational direction that is counter to the first rotational direction until the rotor comes to a standstill in a predefined second stationary position; and —starting from the rotor in the first rotational direction starting from the second stationary position. | 03-28-2013 |
20130082627 | MOTOR CURRENT DETECTION APPARATUS, MOTOR CONTROLLER, AND ELECTRIC POWER TOOL - A motor current detection apparatus in the present invention includes: a current detection unit, a first filter, and a second filter. The detection unit detects a conduction current flowing from a battery to a brushless motor and outputs a conduction current signal corresponding to the detected conduction current. The first filter extracts a first current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a frequency band equal to or lower than a predetermined first cutoff frequency. The second filter extracts a second current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a predetermined frequency band within a frequency band equal to or lower than a predetermined second cutoff frequency higher than the first cutoff frequency and having the second cutoff frequency as a maximum value. | 04-04-2013 |
20130082628 | DC-DC CONVERTER - A DC-DC converter is configured with a voltage-source power converter at a primary side of a transformer, a current-source power converter at a secondary side of the transformer, and a controller. The DC-DC converter is connected between a storage battery and an inverter that drives an electric motor. The controller generates a first control input based on a voltage between input and output terminals of the voltage-source power converter, a second control input based on a voltage between input and output terminals of the current-source power converter, and a command value for PWM or PFM control based on the first and second control inputs and an input-output current flowing between one of the input and output terminals of the voltage-source power converter and the current-source power converter. Therefore, it is easy to switch between a powering state and a regenerating state. | 04-04-2013 |
20130088177 | DEVICE AND METHOD FOR POWER-SAVING DRIVING OF DEVICE HAVING SAME LOAD PATTERN - A power-saving driving device is provided for a device | 04-11-2013 |
20130093366 | CONTROL DEVICE AND CONTROL METHOD FOR POWER CONVERTER - To provide an upper limit of a generated voltage or generated torque, to thereby prevent the occurrence of an overvoltage or excessive torque during power generation, a control selection section ( | 04-18-2013 |
20130093367 | METHOD AND DEVICE FOR ACTUATING AN ELECTRIC MACHINE IN THE MOTOR STARTING MODE - The present invention relates to a method ( | 04-18-2013 |
20130093368 | ELECTRIC DEVICES - Generally described, the present disclosure is directed to examples of electric devices that include first and second stator assemblies located within a rotor assembly. The configuration of the electric device, including the configuration of the first and second stator assemblies, results in the electric device generating a stronger magnetic field and therefore outputting a higher torque when current is provided to the second stator assembly and generating a weaker magnetic field and therefore outputting a higher rotational speed when current is provided to the first stator assembly. | 04-18-2013 |
20130106320 | CAR POWER SOURCE APPARATUS AND VEHICLE EQUIPPED WITH THE POWER SOURCE APPARATUS | 05-02-2013 |
20130119898 | BATTERY SYSTEM, ELECTRIC VEHICLE, MOVING BODY, ELECTRIC POWER STORAGE DEVICE, POWER SUPPLY DEVICE AND BATTERY VOLTAGE DETECTION DEVICE - A voltage detection section | 05-16-2013 |
20130134909 | HUB POWER DEVICE OF A HYBRID VEHICLE - A hub power device of a hybrid vehicle, comprising a motor powered battery, an accelerator unit, a motor control unit, an annular stator, and an axle shaft which passes through the annular stator to be combined with a hub. An inner wall of the hub is fixed with an annular rotor which is movably sheathed on an outer rim of the annular stator. When the accelerator unit is activated, the motor control unit controls the motor powered battery to supply electricity to the annular stator and the annular rotor, thereby driving the hub to spin. If the accelerator unit is inactivated, the motor powered battery stops supplying electricity to the annular stator and the annular rotor, allowing the annular rotor to spin freely following the hub, thereby generating electric energy between the annular stator and the annular rotor and charging the motor powered battery to reduce fuel consumption. | 05-30-2013 |
20130141020 | SYSTEM AND METHOD FOR MAINTAINING PERFORMANCE OF BATTERY-OPERATED TOOTHBRUSHES - The system periodically measures the battery voltage of the toothbrush and the current in a stator portion of the motor for the appliance. The amplitude of movement of the toothbrush workpiece is determined from the measured stator current. A circuit/control program changes the duty cycle or pulse width of the drive signal from the motor if the battery voltage drops below a first threshold value and a circuit or control program changes the drive frequency of the appliance if the amplitude of the workpiece movement falls below a first threshold value. A circuit/control program terminates the operation of the toothbrush if the voltage drops below a second threshold value or if the amplitude drops below a second threshold value, both of which are less than the respective first thresholds. | 06-06-2013 |
20130147404 | DC-DC CONVERTER SYSTEM OF AN ELECTRIC VEHICLE AND CONTROL METHOD THEREOF - Disclosed is a DC/DC converter system that, after calculating required voltages of the first and second motors based on the magnetic flux and speeds of the first and second motors, the voltage supplied to inverters is controlled by a final voltage command determined as a larger value of the battery voltage and the final required voltage. In particular, the final required voltage is determined as a larger value of the required voltages of the first and second motors. | 06-13-2013 |
20130154521 | Battery with Variable Output Voltage - A battery includes at least one battery module line and a control unit. The at least one battery module line has a plurality of battery modules mounted in series. Each battery module includes at least one battery cell and a coupling unit. The at least one battery cell is mounted between a first input and a second input of the coupling unit. The coupling unit is designed to switch the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module, on a first control signal, and to connect the first terminal to the second terminal on a second control signal. The control unit is designed to transmit the first control signal to a first variable number of battery modules of the at least one battery module line. | 06-20-2013 |
20130181639 | MOTOR DRIVE SYSTEM - A first drive circuit of a motor drive apparatus drives a motor by converting electric power of a battery. A relay is connected in high potential line between the battery and an inverter. A diode is connected in parallel to the relay. The diode conducts a current in a regeneration direction, which is from a high potential side of the inverter to a high potential electrode of the battery, under a state that the relay is in the off-state. Thus, an inductive voltage, which is generated by the motor when a reverse input torque is applied from a load side, is led to the battery through the diode, and switching elements forming the inverter are protected from the inductive voltage. | 07-18-2013 |
20130181640 | DRIVER FOR SWITCHING ELEMENT AND CONTROL SYSTEM FOR ROTARY MACHINE USING THE SAME - In a driver, a changing module changes a rate of discharging the control terminal of a switch at least between a first value and a second value lower than the first value. A measuring module measures a value of a parameter as a function of a current flowing through the conductive path of the switch during a drive signal being in an on state. A control module controls the changing module, as a function of the value of the parameter, to select the first value or the second value as the rate of discharging the control terminal of the switch upon the drive signal directing a change from the on state of the switch to an off state thereof. The control module discharges the control terminal of the switch using the selected value as the rate of discharging the control terminal of the switch. | 07-18-2013 |
20130187574 | POWER STATE DIAGNOSIS METHOD AND APPARATUS | 07-25-2013 |
20130187575 | POWER SOURCE APPARATUS - The power source apparatus is provided with a shunt resistor connected in series with batteries, and a current computation circuit that detects the voltage induced by current flow through the shunt resistor to compute battery current. The shunt resistor is provided with a pair of current flow terminals at two separated points on a metal plate connected in series with the batteries via connecting leads, and a pair of voltage detection terminals on a side of the metal plate between the pair of current flow terminals. Further, the shunt resistor has interval adjustment structures to adjust the distance (L) between attachment points where the connecting leads attach to the pair of current flow terminals. The distance (L) between lead attachment points is adjusted with the interval adjustment structures to finely adjust the voltage induced at the voltage detection terminals due to current flow between the two attachment points. | 07-25-2013 |
20130193881 | RECHARGEABLE ELECTRIC TOOL AND METHOD FOR MANUFACTURING RECHARGEABLE ELECTRIC TOOL - The electric tool is powered by a secondary battery as a power source, and includes: an output section configured to be transmitted thereto a rotation of a motor directly or through a decelerator; a voltage measurement section that measures a battery voltage; a storage means that stores, as a reference voltage, a voltage value of the battery voltage measured preliminarily when a motor-lock is occurring; and a control means that controls a driving of the motor. The control means is configured to decide that the motor is being locked and then stop or decelerate the motor upon detecting that the battery voltage measured through the voltage measurement section is maintained lower than or equal to the reference voltage stored in the storage means for a predetermined period of time during the driving of the motor. | 08-01-2013 |
20130200824 | METHOD FOR CONTROLLING THE POWER SUPPLY OF AN ELECTRIC MOTOR - A method and electrical system for controlling the power supply of an electric motor, in particular the electric motor of a vehicle that can be electrically driven, includes a control device that controls the power supply of the electric motor by an energy store. The energy store comprises a plurality of modules that are exposed to stress due to repeated charging and/or discharging and undergo an aging process as a result of said stress. In order to decouple the service life of the energy store from the service life of a vehicle, for example, the control device controls the charging and/or discharging of at least two modules differently such that said modules exhibit a stress difference so as to selectively reduce the aging process of the module being exposed to less stress. | 08-08-2013 |
20130214705 | Method for Limiting a Switch-on Current in an Electrical System - The disclosure describes a method for limiting a switch-on current in an electrical system which is supplied with power by a battery. During a switch-on process, an electrical load is connected to the electrical system and precharged by means of a precharging resistor. A monitoring unit regularly records operating data of at least one variable which influences a temperature of the precharging resistor and estimates the temperature of the precharging resistor on the basis of said operating data. The disclosure also describes an apparatus and a battery which are designed to execute the method according to the disclosure. | 08-22-2013 |
20130214706 | Apparatus and Method for Inductive Power Transfer on an Electrified Roadway Using a Rotating Secondary Inductor - The invention described herein provides an energy transfer system via a tire based inductor system. By using the tire, the area inside the tire, the tire rim, or the wheel as the inductive pick-up for a powered roadway system the prior art problems are solved. Namely, since the tire/wheel is always in contact, or near contact with the road, the air gap is reduced to a minimum, and substantially fixed, distance. By mounting the secondary on the perimeter of a wheel, relative motion between the road and inductor is minimized In addition, the pick-up can be encased in the tire, eliminating the problem of road debris, snow and ice entirely. Also, some heating of the tire due to electrical losses may enhance traction and tread performance on snowy or wet roads. In all configurations, the vehicle's wheel suspension adjusts vertically adjusting for road imperfections and obstacles. | 08-22-2013 |
20130221877 | Systems and Methods for Black Starting a Power Grid Using a Self-Starting Synchronous Condenser - Systems and methods for black starting a power grid are described. A battery-powered configuration including, but not limited to, a motor, drive, and batteries can be coupled to a condenser which is coupled to a power grid. The drive can draw power from the batteries and use the power to accelerate the motor. As the motor accelerates, the condenser can accelerate by virtue of a shaft coupling the motor to the condenser. Upon the condenser reaching a certain speed or operational capacity, an inverter can de-block from a power distribution line and allow power to enter the power grid. In certain embodiments, a control device such as a circuit or computing device can be used to facilitate the black start of the power grid. | 08-29-2013 |
20130221878 | METHOD FOR SETTING A DESIRED OUTPUT VOLTAGE OF A POWER SUPPLY BRANCH OF A CONTROLLABLE ENERGY STORE - A method for setting a desired output voltage of a power supply branch of a controllable energy store, for controlling and supplying electrical energy to an n-phase electric motor, where n≧1. The controllable energy store has n parallel power supply branches, which each have at least two serially connected energy storage modules including at least one electrical energy storage cell having an assigned, controllable coupling unit; are connected to a reference bus on one side; and are connected to phases, respectively, of the electric motor on the other side. At least one coupling unit is controlled by pulses so that the arithmetic mean of the output voltage of a power supply branch corresponds to the desired output voltage. The energy storage cells respectively assigned to the coupling unit are switched into the respective power supply branch for a pulse duration, and are bypassed during a pause time. | 08-29-2013 |
20130234629 | ELECTRIC VEHICLE - An electric vehicle includes a rechargeable battery, a wheel, a motor coupled to the wheel, a motor driver coupled to the motor and coupled to the battery, the motor driver being configured to drive the motor by discharging the battery in response to a motor driving signal during each of a plurality of supply periods and perform charging of the battery using recovery charging current generated by the motor during a plurality of idle periods, each of the idle periods being between two adjacent ones of the supply periods, and a controller coupled to the motor driver, the controller being configured to supply the motor driving signal to the motor driver during each of the supply periods, and control the motor driver to charge the battery during each of the idle periods. | 09-12-2013 |
20130241447 | Systems for charging an energy store, and method for operating the charging systems - A system for charging at least one energy reservoir cell in a controllable energy reservoir for controlling/supplying electrical energy to an n-phase electrical machine. The controllable energy reservoir has n parallel energy supply branches each having at least two series connected energy reservoir modules, each encompassing at least one electrical reservoir cell having an associated controllable coupling unit. The energy supply branches are connectable to a reference bus and a respective phase of the machine. As a function of control signals, the coupling units interrupt the respective energy supply branch or bypass the cells or switch the associated cells into the respective energy supply branch. To enable charging of at least one cell, at least two phases of the machine are connectable via at least one respective freewheeling diode to a positive pole of a charging device, and the reference bus is connectable to a negative pole of the device. | 09-19-2013 |
20130241448 | PHOTOVOLTAIC APPARATUS, MAXIMUM POWER POINT TRACKING CONTROL METHOD AND COMPUTER PROGRAM IN THE SAME, AND MOVING BODY INCLUDING THE SAME - A photovoltaic apparatus according to the present invention includes a photovoltaic module and a tracking control device. The photovoltaic module includes a plurality of series portions coupled in parallel. The series portion includes a plurality of photovoltaic elements coupled in series. The photovoltaic elements coupled in a same straight row of the plurality of series portions are coupled parallel to one another. The tracking control device is configured to perform a maximum power point tracking control on an output of the photovoltaic module. The photovoltaic module includes a temperature sensor that detects a real panel temperature that is a panel temperature when the photovoltaic module is operating. | 09-19-2013 |
20130249446 | STORAGE SYSTEM, ELECTRONIC DEVICE, ELECTRIC VEHICLE AND POWER SYSTEM - Discharge is stopped when a voltage of a battery becomes smaller than a defined value or a remaining capacity of the battery reaches 0, and further, when power to a system cannot be maintained, the system is automatically shut down to be put into a shutdown state. | 09-26-2013 |
20130257319 | OUTPUT CONTROL APPARATUS FOR ELECTRIC MOTOR AND METHOD FOR CONTROLLING OUTPUT OF ELECTRIC MOTOR - An output control apparatus for an electric motor includes a phase-current instruction-value setting device, a draw-current allowable-value storage device, a phase-current allowable-value setting device, and a phase-current instruction-value limiting device. The draw-current allowable-value storage device is configured to store a draw current allowable value of an electric storage device corresponding to an allowable current value of a system disconnecting-connecting device provided in a power system from the electric storage device to the electric motor. The phase-current allowable-value setting device is configured to set a phase current allowable value based on the draw current allowable value and an ON time of a switching element in a power converter. The phase-current instruction-value limiting device is configured to compare the phase current instruction value with the phase current allowable value to limit the phase current instruction value so as not to exceed the phase current allowable value. | 10-03-2013 |
20130257320 | METHOD FOR OPERATING AN ELECTRIC TOOL - A method for operating an electric tool and an electric tool, the electric tool having an electric motor and a sensor, the electric tool having a rechargeable energy source for supplying the electric motor and the sensor with power, the sensor being switched to be currentless after the switching off of the electric motor. | 10-03-2013 |
20130257321 | Battery System, Method for Charging Battery Modules, and Method for Balancing Battery Modules - A battery system has a battery with a plurality of battery modules which can be selectively activated or deactivated by means of actuation, wherein, in the activated state, the battery module voltage of a respective battery module contributes to an output voltage of the battery and, in the deactivated state, the battery module is uncoupled from the current path of the battery. The battery system comprises a circuit for charging the battery modules which has components which are arranged in accordance with a switching converter topology, which is integrated in the battery system in such a way that the battery modules can be charged independently of whether a respective battery module which is to be charged is in the activated or in the deactivated state. A method for charging battery modules, a method for balancing battery modules, and a motor vehicle include the battery system. | 10-03-2013 |
20130257322 | Method for the Resistive Cell Equalization of Battery Cells of a Battery, a Battery which is Controlled in Accordance with the Method, and a Motor Vehicle - A method for the resistive charge equalization of battery cells of a battery, includes, in a first step, ascertaining the state of charge of the battery cells ascertained and correlating the battery cells of which the state of charge exceeds a predefined value with a first mask, which permits charge equalization only for a predefined portion of all the battery cells, wherein, then, charge equalization is performed. In a second step, the state of charge of the battery cells is optionally ascertained again and the battery cells of which the state of charge exceeds a predefined value are correlated with a second mask, which differs from the first mask, and wherein, then, charge equalization is performed. As a result, the heat generated during charge equalization is distributed in space and time such that no local overheating of or damage to components occurs and no overtemperature disconnection of the battery occurs. | 10-03-2013 |
20130264974 | CONTROLLER FOR MULTI-PHASE ROTARY DEVICE - A controller includes: an inverter having switching devices for converting by a PWM method and supplying an electric power to a multi-phase rotary device; a duty calculator calculating a duty command value with To; a pseudo duty calculator calculating a N-th update duty value based on N-th and (N−1)-th duty command values according to a ratio of To/Tr with a linear compensation method; a comparator comparing the update duty value with a carrier wave to generate an on-off signal of each switching device; and a detector detecting current of each phase with To. The duty calculator changes an average voltage of each phase to make an on-state time of a detection side switching device equal to or longer than minimum. When the on-state time at one phase is smaller than minimum, the pseudo duty calculator outputs a pseudo duty value to detect the current of other phases. | 10-10-2013 |
20130264975 | ELECTRICALLY POWERED VEHICLE AND METHOD FOR CONTROLLING THE SAME - A converter is disposed between a first battery and a power line for transmitting power inputted to and outputted from a motor for traveling. A second battery, on the other hand, is connected to the power line with a relay being interposed therebetween. A control unit controls the relay to be turned on or off in accordance with an operating state of the motor. | 10-10-2013 |
20130285580 | QUICK CHANGE BATTERY ARRANGEMENT FOR MOTORIZED SHADE - The present invention advantageously provides a motorized roller shade that includes a shade conduit having an outer surface upon which a shade is attached and an inner surface defining an inner cavity. The motorized shade also comprises a motor disposed within the inner cavity along with a controller coupled to the motor that controls the motor. The motorized roller further comprises a power supply sleeve having an interior space, wherein the power supply sleeve is disposed within the inner cavity, wherein the power supply sleeve is coupled to the motor. The sleeve may be accessed by an access port that extends between the outer surface and the inner surface. | 10-31-2013 |
20130285581 | PASSIVE HIGH-VOLTAGE DC BUS DISCHARGE CIRCUIT FOR A VEHICLE - A vehicle includes a rechargeable energy storage system (RESS), an electric traction motor, a traction power inverter module (TPIM), a high-voltage direct current (HVDC) bus that electrically connects the RESS to the TPIM, a passive discharge circuit connected across the positive and negative rails of the bus, and a microprocessor. The circuit includes a semiconductor switch. The microprocessor provides an output signal at a first voltage level that opens the switch and prevents discharge of the HVDC bus when the microprocessor is operating normally, and at a default second voltage level that closes the switch in the presence of a predetermined vehicle condition to thereby discharge the HVDC bus. An optocoupler may receive the output signal, and a zener diode may be in electrical parallel with an output side of the optocoupler. The switch may be an insulated gate bipolar transistor or a thyristor in different embodiments. | 10-31-2013 |
20130293163 | Combination Charger and Motive Power Device - A combined battery charger and motor driver circuit assembly includes a rechargeable battery, a traction motor configured to accept a pulse-width-modulated (PWM) drive, a PNP transistor array, a charging source of chopped and rectified DC, and a control circuit configured to apply a discrete PWM drive signal to the gate of each transistor in the PNP transistor array. | 11-07-2013 |
20130293164 | FLUID APPARATUS - There is provided a fluid apparatus that includes a fan configured to suction or discharge a gas; a motor configured to drive the fan; a battery configured to supply electric power to the motor; a current limiting device provided on an electrical conduction path from the battery to the motor; a first drive device configured to, when receiving a drive command from outside, flow a first drive current to the motor through the current limiting device, to thereby cause normal rotation of the motor; an operation switch to be operated by a user; and a second drive device configured to, while the operation switch is being operated by the user, flow a second drive current, which is larger than the first drive current, from the battery to the motor, to thereby cause high speed rotation of the motor, | 11-07-2013 |
20130293165 | SYSTEM FOR COUPLING AT LEAST ONE DC SOURCE TO A CONTROLLABLE ENERGY STORE AND ASSOCIATED OPERATING METHOD - The invention relates to a system for coupling at least one DC source ( | 11-07-2013 |
20130300322 | EMBEDDED INDUSTRIAL CONTROLLER WITH BICYCLE FRAME SHAPE - An embedded industrial controller with a bicycle frame shape is disclosed. The embedded industrial controller includes a casing with the bicycle frame shape having an upper tube, a lower tube, a front fork, a rear lower fork, a rear upper fork and a base tube, a motherboard, a battery module, a power electrical port and a plurality of input and output electrical ports. The embedded industrial controller with a bicycle frame shape of the present invention has significantly improved functions than the conventional industrial controller, and further meets the conventional requirements such as dust proof, vibration proof, and heat dissipation. | 11-14-2013 |
20130300323 | METHOD AND CIRCUIT ARRANGEMENT FOR CHARGING AN INTERMEDIATE CIRCUIT CAPACITOR - A method for charging an intermediate circuit capacitor in a precharging unit includes charging the intermediate circuit capacitor via a current source and adjusting the supplied current in such a manner that a constant power loss is produced in the current source during the entire charging operation. A circuit arrangement includes a battery which is connected to a current source which is connected to an intermediate circuit capacitor via a switch. An adjusting circuit is arranged in parallel with the current source and can be used to adjust the current for charging the intermediate circuit capacitor. The current is adjusted in such a manner that a constant power loss is produced in the current source during the entire charging operation. | 11-14-2013 |
20130307442 | DEVICE FOR RECOVERING ELECTRIC ENERGY IN DC MOTOR-DRIVEN ELECTRIC VEHICLE - A device for recovering electric energy in a DC motor-driven electric vehicle. The device includes a battery; a first inverter; an inductor; a first rectifier bridge or a second inverter; a DC motor; a second rectifier bridge or a third inverter; and a charger. The anode and the cathode of the battery are connected to input ends of the first inverter, respectively. One output end of the first inverter is connected to one end of a primary coil of the inductor. Another output end of the first inverter is connected to one input end of the first rectifier bridge or the second inverter. Another end of the primary coil of the inductor is connected to another input end of the first rectifier bridge. The charger is connected to the anode and the cathode of the battery for supplying power from an external power supply. | 11-21-2013 |
20130307443 | SLEWING-TYPE WORKING MACHINE - A slewing-type working machine includes: an electric storage device capable of being charged with regenerative electric power for regenerating slewing energy of an upper slewing body while functioning as an electric power source for an electric slewing motor; an electric storage device and electric storage device controller detecting whether the electric storage device is under a normal condition with sufficient capacity to regenerate the slewing energy or under an abnormal condition without sufficient capacity; and a controller controlling a velocity of the electric slewing motor based on a result of detection by the electric storage device and electric storage device controller, wherein the controller performs a velocity limiting control for limiting a maximum velocity of the electric slewing motor when the electric storage device is under the abnormal condition. | 11-21-2013 |
20130307444 | Power Supply System for an Electrical Drive of a Marine Vessel - A power supply system for an electrical drive of a marine vessel is provided. The electrical drive includes an electric motor that is adapted to receive electric energy from a power source. The electrical drive has a first operating state in which electric energy is supplied by the power source to the electrical drive to operate the electrical drive and a second operating state in which the electric motor of the electrical drive is decelerated or braked, wherein the electrical drive generates electric energy in the second operating state. The power supply system comprises an electric energy storage device for storing generated electric energy. | 11-21-2013 |
20130307445 | SYSTEM FOR CHARGING AN ENERGY STORE, AND METHOD FOR OPERATING THE CHARGING SYSTEM - The invention relates to a system for charging at least one energy storing cell ( | 11-21-2013 |
20130314005 | DEVICE FOR RECOVERING ELECTRIC ENERGY IN AC MOTOR-DRIVEN ELECTRIC VEHICLE - A device for recovering electric energy in an AC motor-driven electric vehicle. The device includes a battery, a single-phase or three-phase inverter, a single-phase or three-phase inductor, an AC motor, a rectifier bridge or a second inverter, and a charger. The anode and the cathode of the battery are connected to input ends of the inverter, respectively. An output end of the inverter is connected to the AC motor via a primary coil of the inductor. An output end of a secondary coil of the single-phase or three-phase inductor is connected to an input end of the rectifier bridge or the second inverter. Output ends of the rectifier bridge are connected to the anode and the cathode of the battery, respectively. The charger is connected to the anode and the cathode of the battery for supplying power from an external power supply. | 11-28-2013 |
20130314006 | ELECTRICAL SYSTEM ASSEMBLY OF ELECTRIC AUTOMOBILE AND ENERGY SYSTEM AND ACTUATING DEVICE THEREOF - An electrical system assembly of an electric automobile includes an energy system, a power system, and an instrument system. The energy system includes a battery module and a management module for managing the battery module; the power system includes a motor and a controller; the battery module includes a number of storage batteries connected in series and a solar panel for charging the storage batteries; and the storage batteries provide energy to the controller, controlling the motor through the controller. There is communication between the management module, the controller and the instrument system, thereby each of these is capable of knowing the working status of the other two, thus facilitating coordination and enabling a powerful protection function for the electrical system assembly of the electric automobile. | 11-28-2013 |
20130314007 | ELECTRIC POWER TOOL - An electric power tool is provided with a three-phase brushless motor that drives a tool and a motor driver that drives the three-phase brushless motor with square voltage waves. The motor driver is able to set a conduction angle to a value that is equal to or more than 130 degrees but not more than 180 degrees, and especially to change the conduction angle among at least two values that are equal to or more than 130 degrees but not more than 180 degrees. In this configuration, it may be preferable that the conduction angle is set to a larger value as a load applied to the tool becomes smaller. On the other hand, it may be also preferable that the conduction angle is set to a larger value as a load applied to the tool becomes smaller. | 11-28-2013 |
20130314008 | ENERGY STORAGE DEVICE FOR A SEPARATELY EXCITED ELECTRICAL MACHINE - The invention relates to an energy storage device ( | 11-28-2013 |
20130320888 | SYSTEM COMPRISING AN ELECTRICALLY EXCITED MACHINE - The invention relates to a system comprising an n-phase separately excited electrical machine ( | 12-05-2013 |
20130328507 | DAMPING CIRCUIT FOR AN ENERGY STORAGE DEVICE AND METHOD FOR DAMPING OSCILLATIONS OF THE OUTPUT CURRENT OF AN ENERGY STORAGE DEVICE - A damping circuit for an energy storage device. The damping circuit comprises a current detection device designed to detect an output current of energy supply strings or the energy storage device and to generate an output current signal dependent on the output current. The damping circuit also includes a closed-loop control circuit coupled to the current detection device. The closed-loop control circuit designed to adjust the output current signal to a setpoint current signal and to output a corresponding current control signal. A first winding of a transformer is coupled to an output connection of the energy storage device. A second winding is galvanically isolated from the first winding. A compensation current generation device is coupled to the closed-loop control circuit, and is designed to feed a compensation current into the second winding of the transformer depending on the current control signal. | 12-12-2013 |
20130342134 | STARTER CIRCUIT FOR A MOTOR VEHICLE COMPRISING A DEVICE FOR STEPPING-UP THE BATTERY VOLTAGE, AND STARTER EQUIPPED WITH THE CIRCUIT - The starter motor circuit ( | 12-26-2013 |
20130342135 | COMBINED ELECTRIC DEVICE FOR POWERING AND CHARGING - The invention relates to a combined method and device for powering and charging, wherein said device comprises an AC motor ( | 12-26-2013 |
20140001985 | VEHICLE SYSTEM FOR EVALUATING A VOLTAGE CONVERTER | 01-02-2014 |
20140001986 | Method for Operating an Electric Traction Drive System comprising a Battery Direct Inverter and Associated Control Apparatus | 01-02-2014 |
20140009092 | BATTERY SYSTEM, EQUALIZING APPARATUS, EQUALIZING SYSTEM, ELECTRIC-POWERED VEHICLE, ELECTRIC-POWERED MOVABLE EQUIPMENT, POWER STORAGE DEVICE, AND POWER SOURCE APPARATUS - An equalizing apparatus that includes discharging circuitry and charging circuitry. The discharging circuitry includes a plurality of discharging sections corresponding to the plurality of battery cells in the plurality of battery cell groups. The charging circuitry includes a first coil, a switching device, a plurality of second coils, a plurality of switching devices, and a plurality of diodes. Each of the plurality of second coils, switching devices, and diodes corresponds to a battery cell group. The first coil and second coil form a transformer. | 01-09-2014 |
20140015450 | Method and System for Heating Traction Battery of Electric Vehicle - An electric vehicle such as a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), and a battery-only electric vehicle (BEV) includes a traction battery. A torque command is generated for a motor such that a traction battery electrically connected therewith outputs a discharge current having an alternating current (AC) component to cause a temperature of the traction battery to increase. | 01-16-2014 |
20140015451 | POWER TOOL SYSTEM AND POWER SUPPLY DEVICE - A power tool system includes: a power tool including an AC motor; a portable battery pack; and a power supply device that converts a DC power supplied from the portable battery pack into an AC power to supply the AC power to the AC motor. | 01-16-2014 |
20140015452 | INVERTER DEVICE - An inverter device includes a substrate, upper arm elements, lower arm elements, positive and negative input electrodes, and an output electrode. The upper arm elements serve as an upper switching element and are arranged along a first direction. The lower arm elements serve as a lower arm switching element and are arranged along the first direction. At least one of bus bars of the positive and negative input electrodes and the output electrode extends parallel to the first direction. At least one of the bus bars of the positive and negative input electrodes and the output electrode has a length in the longitudinal direction that is greater than a width between two ends of the upper arm elements and the lower arm elements in the first direction. | 01-16-2014 |
20140015453 | Conductor Foil for a Lithium-Ion Cell, Lithium-Ion Accumulator and Motor Vehicle Comprising a Lithium-Ion Accumulator - A conductor foil for a negative electrode of a lithium-ion accumulator comprises at least one lithium-ion cell. The conductor foil comprises an aluminum foil both sides of which are covered by a metal layer consisting of copper or nickel. The disclosure further relates to a lithium-ion accumulator and to a motor vehicle comprising a lithium-ion accumulator. | 01-16-2014 |
20140015454 | BATTERY SYSTEM, ELECTRIC-POWERED VEHICLE, MOVABLE EQUIPMENT, POWER STORAGE DEVICE, AND POWER SOURCE APPARATUS - The signal output circuit of the highest rank state detection section outputs an abnormal signal that is generated by the processing device when an abnormality is detected by the abnormality detection section. When no abnormality is detected, a normal signal is generated by the processing device and output as the detection signal. In each state detection section other than that of the highest rank, the signal output circuit outputs an abnormal signal generated by the processing device when an abnormality is detected by the abnormality detection section, and outputs the detection signal input from a higher rank state detection section when no abnormality is detected. | 01-16-2014 |
20140015455 | ELECTRIC VEHICLE CONTROL DEVICE - Provided is an electric vehicle control device in which a power supply device has a simple structure. A BMU power supply device ( | 01-16-2014 |
20140021887 | APPARATUS FOR REDUCING CURRENT DRAIN AND CURRENT SPIKE IMPACT ON BATTERY-POWERED ELECTRONIC DISPENSERS - Apparatus and method for reducing current drain and current spike impact on a dispenser electric motor by employing a series of supercapacitors in a power supply current to provide at least a portion of the energy requirement of the dispenser electric motor upon initial energization. | 01-23-2014 |
20140021888 | MOTOR DRIVING DEVICE INCLUDING ELECTRIC STORAGE DEVICE - A motor driving device includes a rectifier, an inverter connected to a DC link on a DC side of the rectifier, a power failure detecting unit for detecting a power failure on the alternating side of the rectifier, an electric storage device connected to the DC link, a charging unit that possesses a voltage boosting function of charging the electric storage device by direct current power at the DC link, a discharging unit that causes direct current power stored in the electric storage device to be discharged to the DC link, and a control unit that causes the charging unit to operate when the power failure detecting unit does not detect a power failure, or before start of motor drive, and causes the discharging unit and the inverter to operate when the power failure detecting unit detects a power failure. | 01-23-2014 |
20140028223 | Power Tool Having Display That Displays Residual Capacity Of Battery - A power tool includes a housing, an electric motor accommodated in the housing, a secondary battery that supplies electric power to the electric motor, a handle provided at the housing, a trigger switch provided at the handle for controlling electric power supply to the electric motor, a residual capacity display for displaying a residual capacity of the secondary battery, and a lock-release switch provided at the handle and configured to allow the trigger switch to be operable and to start displaying the residual capacity at the residual capacity display upon manipulation to the lock-release switch. | 01-30-2014 |
20140035489 | Battery Control and Protective Element Validation Method - A method, system and device for discharging power or validating protective elements of a power source to ensure proper functioning of a tool at various temperatures. The power source communicates with a switch using handshake signals to establish a scheme for power distribution depending on the temperature of the power source. The power source can discharge power at a normal start-up rate or a slower start-up rate depending on the temperature of the power source. Handshake signals can also be used to validate protective elements, where the protective elements respond to wake-up signals with respective handshake signals indicating that the protective elements are functioning property. | 02-06-2014 |
20140042936 | Battery Module, Battery Management System, System for Supplying a Drive of a Machine Suitable for Generating Torque with Electrical Energy, and a Motor Vehicle - A battery module includes lithium-ion battery cells and at least one discharge circuit configured to discharge the battery cells. The discharge circuit includes a control signal input, a switch, and a resistor and is configured to close the switch in reaction to a control signal at the control signal input, in order to electrically connect terminals of the battery module. The battery module can then be reliably discharged by a corresponding control signal. | 02-13-2014 |
20140042937 | Method for Charging an Intermediate Circuit Capacitor - The disclosure relates to a method for charging an intermediate circuit capacitor in an electric drive unit comprising an electric motor. The intermediate circuit capacitor is charged by an intermediate circuit current that is supplied by a battery. The output voltage of the battery is settable to one or more voltage values. A target value of the intermediate circuit current is determined, and an actual value of the intermediate circuit current is ascertained. The actual value of the intermediate circuit current is then compared with the target value of the intermediate circuit current. An optimal output voltage of the battery is determined on the basis of the comparison of the actual value of the intermediate circuit current with the target value of the intermediate circuit current. Then, the optimal output voltage of the battery is set. | 02-13-2014 |
20140049195 | CIRCUIT FOR ACTIVATING AN ELECTRIC MOTOR IN A HAND GUIDED WORK APPARATUS - A circuit for activating an electric motor in a work apparatus includes a main circuit having an electric motor, a rechargeable-battery pack, and an operating switch for activating the motor, and also a parallel branch to the battery pack and the operating switch. A capacitor is arranged in the parallel branch. To lower the electrical contact load on the operating switch, provision is made to arrange an electronic switch, which is connected in series with the capacitor, in the parallel branch. The series circuit which includes the capacitor and the electronic switch has a first and a second end. The ends form the only electrical power connection of the capacitor to the main circuit. The electronic switch in the series circuit will apply a supply voltage, which is provided by the battery pack, to the capacitor only after a period of time following closing of the operating switch has elapsed. | 02-20-2014 |
20140049196 | METHOD AND DEVICE FOR AN ELECTRIC MOTOR DRIVE - Method and device for an electric-motor drive, particularly in connection with electric vehicles, in which a system consisting of rechargeable batteries produces operating current for the electric motor/electric motors moving the vehicle. An essential part of the method and device is that one single-cell battery, or several single-cell batteries separated galvanically from each other are used, the voltage of which is raised to an acceptable operating-voltage level. | 02-20-2014 |
20140055061 | Battery Powered Control Device For Driving A Load With A Pulse Width Modulated Signal - A battery-powered load control device (e.g., a motorized window treatment) is able to supply a pulse-width modulated current to an electrical load (e.g., a motor) while conducting a substantially DC battery current from a battery powering the motorized window treatment. The motorized window treatment includes a motor drive circuit for driving the motor with a pulse-width modulated signal to adjust the rotational speed of the motor, such that the motor conducts the pulse-with modulated current. The motorized window treatment also has an input circuit coupled between the battery and the H-bridge drive circuit. The input circuit has an output for conducting the pulse-width modulated load current, and conducts the substantially DC battery current from the battery. The input circuit may comprise, for example, a passive filter circuit (such as an inductor-capacitor filter) or an active circuit (such as a power converter). | 02-27-2014 |
20140062348 | CONTROL STRATEGY FOR AN ELECTRIC MACHINE IN A VEHICLE - A hybrid-electric vehicle method of controlling a hybrid electric vehicle is provided. The vehicle includes a traction battery, at least two electric-machines, and a controller. The controller is configured to, in response to a faulted condition one of the electric-machines during a drive cycle, command the other of the electric-machines to function in a mode in which torque output is restricted to a threshold value that depends on a voltage of the battery to maintain vehicle propulsion during the drive cycle. | 03-06-2014 |
20140062349 | CONTROL STRATEGY FOR AN ELECTRIC MACHINE IN A VEHICLE - A hybrid-electric vehicle and method of controlling a hybrid-vehicle is provided. The vehicle includes a traction battery, at least one electric-machine, and a controller. The controller is configured to alter a voltage between the battery and the electric-machine based on a measured voltage of the battery or the high voltage bus. In response to an indication that the measured voltage is faulty during a drive cycle, the controller instead alters the voltage between the battery and the electric machine based on a substituted battery voltage signal such that the electric-machine remains operable for the drive cycle. | 03-06-2014 |
20140062350 | APPARATUS FOR CONTROLLING MOTOR FOR ELECTRIC VEHICLE AND METHOD FOR REDUCING TORQUE RIPPLE USING THE SAME - An apparatus controlling an electric vehicle motor and a method to reduce torque ripple using the same are provided. | 03-06-2014 |
20140062351 | Electrically Pedal-Assisted Bicycle - It is described an electronic system ( | 03-06-2014 |
20140062352 | MOTOR CONTROL SYSTEM AND CONTROL SYSTEM FOR ELECTRIC MOTOR-DRIVEN VEHICLE - A motor control system includes a drive motor and a deck motor that are connected to a battery, an ECU, and a key switch. The key switch acquires that an operation unit has been turned on, and transmits a restart permission signal to the ECU. When SOC of the battery reaches or falls below a first threshold set in advance, the ECU performs a step of disabling all the motors, and when the restart permission signal is received, the ECU performs a step of executing a decelerated travelling mode where the disabled state of the drive motor is released and an allowed speed of the drive motor is reduced. | 03-06-2014 |
20140070735 | ELECTRIC MOTOR MODE CONTROL - A vehicle includes one or more inverter-fed electric machines such as permanent magnet synchronous motors. A controller operates an inverter in either six-step mode or PWM mode depending upon motor speed, motor torque, and the inverter input voltage. A method of selecting the operating mode may determine a transition threshold based on the ratio of rotor speed to inverter input voltage, reducing the approximation error associated with multi-dimensional lookup tables. When the speed and voltage vary while maintaining a constant ratio and constant torque, the transition threshold does not change. Consequently, the controller remains in the same mode. | 03-13-2014 |
20140070736 | POWER ELECTRONICS APPARATUS AND CONTROL METHOD FOR AN ELECTRIC MACHINE AND FOR ELECTRICAL ENERGY STORES - A power electronics arrangement includes an inverter to which an electric machine can be connected, and at least one half bridge to which at least two electric energy storage devices can be connected. One of the at least two electric energy storage devices at least temporarily supplies the electric machine, and one of the electric energy storage devices at least temporarily charges another energy storage device of the at least two electric energy storage devices by way of the electric machine and one of the half bridges. For this purpose, a control method for the power electronics arrangement operates according to the principle of space vector modulation. | 03-13-2014 |
20140077730 | ELECTRIC BICYCLE DRIVING APPARATUS - Disclosed is an electric-bicycle drying apparatus. The apparatus includes a speed-change mode operator to output a low-speed or high-speed mode signal, a controller to output a first or second control signal corresponding to the low-speed or high-speed mode signal, a first motor driver to output a first motor-driving signal to drive a motor in a low-speed mode in response to the low-speed mode signal, a second motor driver to output a second motor-driving signal to drive the motor in a high-speed mode in response to the high-speed mode signal, a motor-drive-load booster to boost load of the second motor-driving signal using battery power under control of the controller in response to the high-speed mode signal, and a motor speed-change switching unit to selectively receive a switching enable signal from the controller so as to be turned on to provide the second motor-driving signal having the boosted load to the motor. | 03-20-2014 |
20140077731 | BATTERY PACK AND ELECTRICALLY DRIVEN AUTOMOBILE - A battery pack for an electrically driven automobile includes plural battery banks, a battery management unit that detects current flows, voltages and temperatures, first and second terminals connected respectively to the positive and negative electrode terminals of the battery banks, plural third and fourth terminals connected respectively to the positive and negative electrode terminals of the battery banks, a main contactor that switches the connection between the positive electrode terminals of the battery banks and the first terminal and the connection between the negative electrode terminals of battery banks and the second terminal, sub-contactors that switch the connection between the positive electrode terminals of the battery banks and the first terminal, and charging sub-contactors that switch the connection between the positive electrode terminals of the battery banks and the third terminals and the connection between the negative electrode terminals of the battery banks and the fourth terminals, respectively. | 03-20-2014 |
20140084816 | POWER CONVERTER FOR AN ELECTRICAL MACHINE AND METHOD OF OPERATING THE MACHINE - A power converter has a first electrical circuit including a direct current (dc) voltage source, a first phase winding of an electrical machine, and a first switch operating in a conductive state. A second electrical circuit includes the first phase winding, a first unidirectional current device, and a capacitive storage element. A third electrical circuit includes the capacitive storage element, a second switch operating in a conductive state, and the first phase winding. A fourth electrical circuit includes the first phase winding, the dc voltage source, and a second unidirectional current device. | 03-27-2014 |
20140084817 | METHOD OF ENERGY AND POWER MANAGEMENT IN DYNAMIC POWER SYSTEMS WITH ULTRA-CAPACITORS (SUPER CAPACITORS) - A power management system includes an ultracapacitor and a charge shuttle including a power converter. The charge shuttle may be coupled with the ultracapacitor and may be configured to be coupled with a load. The charge shuttle can be configured to monitor one or more parameters of the load and the ultracapacitor, and to control energy flow between the load and the ultracapacitor based on or according to monitored parameters. The system may also include a battery or other rechargeable energy storage element. | 03-27-2014 |
20140084818 | POWER SOURCE SYSTEM, VEHICLE INCLUDING SAME, AND METHOD FOR CONTROLLING POWER SOURCE SYSTEM - A first opening/closing device is connected between a power storage device and a first pair of power lines. A second opening/closing device is connected between the power storage device and a second pair of power lines. A third opening/closing device opens and closes an electric conduction path between the power storage device and each of the first opening/closing device and the second opening/closing device. When starting to externally supply electric power, a control device charges a first capacitor connected between the first pair of power lines by closing the first opening/closing device and the third opening/closing device, and thereafter charges a second capacitor connected between the second pair of power lines by closing the second opening/closing device and opening the third opening/closing device. | 03-27-2014 |
20140091738 | Inverter Circuit having Switching Means Operating with Linear Operation - An inverter circuit for an electric motor includes a first terminal and a second terminal, via which the inverter circuit is connectable to an energy store. The inverter circuit also includes a parallel circuit having three half-bridge circuits located between the first terminal and the second terminal. Each of the half-bridge circuits includes in each case two switching devices, between which a half-bridge terminal, via which the respective half-bridge circuit is connectable to a respective input of an electric motor, is arranged in each case. The two switching devices of at least one of the half-bridge circuits are in each case configured to be driven linearly and to be operated as a current source, while the respective other switching device of the at least one half-bridge circuit is in the on state. | 04-03-2014 |
20140091739 | CONTROL APPARATUS, VEHICLE, AND CONTROL METHOD - A control apparatus for a vehicle having an idle stop function includes a measurement unit that measures the characteristic of a battery provided in the vehicle, an identification unit that identifies the type of the battery based on the measured characteristic, and a control unit that stops the idle stop function in a case where the identified type of the battery indicates that the battery is not for an idle-stop vehicle, and permits execution of the idle stop function in a case where the execution of the idle stop function is permitted by an input of a predetermined signal from an external terminal even when the identified type of the battery indicates that the battery is not for the idle-stop vehicle. | 04-03-2014 |
20140103840 | BOOTSTRAP CIRCUIT AND CONTROL SYSTEM FOR A POWER TOOL - An electronic circuit for a power tool includes a plurality of high-side and low-side switches connected in series between terminals of a power source and coupled to a load, a bootstrap circuit comprising a plurality of bootstrap capacitors arranged to provide sufficient amount of drive voltage to turn ON and OFF the plurality of high-side switches, and a control unit configured to turn ON and OFF the plurality of low-side switches in succession to sequentially charge the bootstrap capacitors. | 04-17-2014 |
20140111120 | VEHICLE, POWER SUPPLY SYSTEM, AND METHOD FOR CONTROLLING POWER SUPPLY SYSTEM - When an ECU disconnects a second power storage device BAT | 04-24-2014 |
20140111121 | BATTERY CONFIGURATION FOR AN ELECTRIC VEHICLE - A power delivery system for an electric vehicle provides efficient power management for either continuous or intermittent high-performance operation, using a boost stage and an on-board charging circuit. A main battery, configured as a high-capacity power source, supplies power to the electric motor under normal load conditions. An auxiliary boost battery assists the main battery in supplying a high-level current at a higher discharge rate thereby causing the motor to operate in a high-performance drive mode. A charging circuit recharges the boost battery from the main battery during operation of the motor. The charging circuit also maintains a charge balance between the boost battery and the main battery when the two batteries have different chemistries. In one embodiment, participation of the boost battery in powering the electric motor can be controlled automatically according to sensed changes in the load. In another embodiment, power management can be based on timed intervals. | 04-24-2014 |
20140111122 | ELECTRICAL STORAGE SYSTEM, AND CONTROL METHOD FOR ELECTRICAL STORAGE SYSTEM - A first electrical storage stack is connected in series with a second electrical storage stack. A current interrupter is configured to interrupt a current path by being removed from the current path. First and second detection line are respectively connected to first and second terminals of the first electrical storage stack. The second electrical storage stack is connected to the second terminal of the first electrical storage stack via the current interrupter. A third detection line is connected to a portion of the current path, located on the second electrical storage stack side of the current interrupter. A controller is configured to control charging and discharging operations of each of the first and second electrical storage stacks on the basis of the voltage of the first electrical storage stack, the voltage being detected via the first detection line and the third detection line. | 04-24-2014 |
20140111123 | Drive Unit for an Electric Motor - A drive unit for an electric motor comprises a multilevel inverter and a battery. The battery comprises at least one battery module train comprising a plurality of battery modules connected in series, each module having at least one battery cell and one coupling unit. The at least one battery cell is connected between a first input and a second input of the coupling unit. The coupling unit is designed to connect the at least one battery cell between two terminals of the battery module in response to on a first control signal and to connect the two terminals in response to a second control signal. Several center taps are arranged on the battery module train, by means of which a potential can be tapped at a connection between two battery modules respectively. Inputs of the multilevel inverter are connected to the taps. | 04-24-2014 |
20140117889 | MOTOR DRIVING DEVICE, ELECTRONIC APPLIANCE, AND VEHICLE - A motor driving device of the present invention includes: a driver that receives supply of a power supply voltage to apply a plurality of phase voltages to a motor; a voltage-division phase voltage generation portion that divides each of the phase voltages to generate a plurality of voltage-division phase voltages; a neutral point voltage generation portion that combines and divides the phase voltages to generate a neutral point voltage; a selector that outputs any one of the voltage-division phase voltages as a selection voltage-division phase voltage; a comparator that compares the selection voltage-division phase voltage and the neutral point voltage to generate a comparison signal; and a controller that generates a selection control signal of the selector and an energization control signal of the driver according to the comparison signal. | 05-01-2014 |
20140117890 | INITIAL STARTING APPARATUS AND METHOD FOR VEHICLE - An initial starting apparatus and method for a vehicle are provided. The initial starting apparatus includes: a converter configured to identify remaining energies of an energy storage and a battery during a wakeup mode; a controller configured to control the wakeup mode of the converter and control energy to be applied from the energy storage and the battery to a starter motor in accordance with the remaining energies of the energy storage and the battery; the energy storage configured to apply energy to the starter motor under the control of the controller; the battery configured to apply energy to the starter motor under the control of the controller; and the starter motor configured to be driven by being supplied with a combined energy obtained by combining the energies from the energy storage and the battery. | 05-01-2014 |
20140117891 | SEMICONDUCTOR DEVICE, ELECTRONIC APPLIANCE, AND VEHICLE - A semiconductor device has a first chip and a second chip sealed in a single package. The first chip includes a regulator which generates an internal voltage from a supply voltage, a reset circuit which monitors the supply voltage and the internal voltage to generate a reset signal, and a controlled circuit which operates by being supplied with the supply voltage. The second chip includes a controlling circuit which generates a control signal for the controlled circuit by being supplied with the internal voltage. The reset signal is fed to both the controlling circuit and the controlled circuit. | 05-01-2014 |
20140117892 | Speed Control for Power Tools - A power tool, typically battery-operated, such as a lawnmower, comprising: a driven element ( | 05-01-2014 |
20140125258 | METHOD AND APPARATUS FOR REDUCING TORQUE VARIATION IN MOTOR DRIVE SYSTEMS - A method for controlling a specific electric machine includes receiving with a controller a back electromotive force (BEMF) coefficient for the specific electric machine. The controller is configured to control operation of an inverter coupled to the electric machine where the inverter is configured to provide or receive multi-phase electricity to or from the electric machine in motor mode or generator mode, respectively. The method further includes receiving with the controller an input related to a selected torque to be applied by or a selected power to be removed from the electric machine. The method further includes determining a first electrical parameter the inverter is to apply to in motor mode or a second electrical parameter the inverter is to convert power to in generator mode using the BEMF coefficient, and applying the first electrical parameter to the electric machine or converting the received power to the second electrical parameter. | 05-08-2014 |
20140125259 | System and Method for Improved Battery Protection Cutoff - Improved protection for a rechargeable battery from damage by being discharged below a cut-off voltage is provided. The measured voltage of a battery under load is lower than the measured voltage of the battery under no load. As the cut-off voltage for the battery is specified as a no load voltage, comparing the measured voltage of the battery under load to the cut-off voltage would result in stopping use of the battery with useable charge remaining. Through testing, a set of relationships for estimating the no load voltage of a battery under load has been determined. Using this set of relationships with battery measurements, an estimated no load voltage for the battery is determined. This estimated no load voltage is compared to the cut-off voltage. This allows for full use of the battery while stopping use of the battery when its voltage reaches the cut-off, thereby preventing damage. | 05-08-2014 |
20140139149 | POWER SUPPLY DEVICE AND VEHICLE INCLUDING THE SAME - A power supply device according to the present invention includes a detector, a memory, and a determinator. The detector detects internal resistance, temperature, and SOC of a battery. The memory stores record data and a predetermined SOC range as storage data. The record data is used for estimating standardized available power at standard SOC temperature corresponding to the detected internal resistance and temperature. If the detected SOC of the battery falls within the range, the determinator estimates standardized available power at the standard SOC and temperature based on the detected internal resistance and temperature, and the record data. When the internal resistance, temperature, and SOC are detected by the detector, if the detected SOC falls within the range, the determinator estimates standardized available power at standard SOC temperature based on the detected internal resistance and temperature, and the record data. | 05-22-2014 |
20140139150 | VEHICLE DRIVING DEVICE - A vehicle driving device includes a high-voltage battery, a voltage converter capable of converting a voltage of the high-voltage battery to a voltage ranging from the voltage of the high-voltage battery to a predetermined upper limit voltage, an inverter supplied with a power-supply voltage from the voltage converter, a driving motor driven by the inverter, and a control device for controlling the voltage converter and the inverter. The control device determines whether or not to limit an upper limit voltage of the voltage converter smaller than the predetermined upper limit voltage on the basis of a usage environment or usage load of a vehicle. In the case where the upper limit voltage of the voltage converter is limited smaller than the predetermined upper limit voltage, the control device drives the inverter after limiting a request torque on the basis of an accelerator pedal operation performed by a driver. | 05-22-2014 |
20140145650 | METHODS AND SYSTEMS FOR CONTROLLING A BOOST CONVERTER - Methods and apparatus are provided for controlling a boost converter. In one embodiment, the method includes processing an input current command through a plurality of prioritized limiting circuits to determine whether to limit the input current command and limiting the input current command to limit the boost converter when it is determined to limit the input current command. In one embodiment, the apparatus includes an energy source coupled to a boost converter that provides an output voltage responsive to a current command signal. An inverter is coupled to the boost converter to provide multiple phased currents to a multi-phase motor for a vehicle. A controller coupled to the boost converter for providing the current command signal by processing an input current command through a plurality of prioritized limiting circuits and determining whether to limit the input current command to provide the current command signal to the boost converter. | 05-29-2014 |
20140145651 | Battery Balancing with Reduced Circuit Complexity - A circuit for a battery includes a number n of battery cells which are connected in series between a positive battery terminal and a negative battery terminal. The number n is a natural number greater than 1. Due to the mounting in series of the n battery cells, a number of connection points are obtained between the n battery cell. The circuit further includes a discharge element comprising a first terminal which is connected or can be connected to a first discharge line and a second terminal which is connected or can be connected to a second discharge line. The circuit also includes a number of switches which can be connected at a first terminal to a respective connection point or to one of the positive or negative battery terminals and are connected at a second terminal to the first or second discharge line. | 05-29-2014 |
20140145652 | MOTOR CONTROL DEVICE AND PROGRAM - A motor control device for controlling a motor that drives by receiving electric power supply from a power source, including: a voltage measurement unit that measures a voltage of the power source; a reduced voltage determination unit that counts a number of times the voltage becomes equal to or lower than a predetermined stop voltage; and a motor drive control unit that controls driving of the motor. | 05-29-2014 |
20140152200 | PORTABLE SERVICE CONTROLLER FOR ELECTRO-MECHANICAL ACTUATORS - A portable service controller for controlling an electro-mechanical actuator, the portable service controller includes a battery configured to power the portable service controller and a user interface configured to receive input from a user and to responsively generate an input signal. The portable service controller also includes a phase sequencer configured to convert the input signal into a series of timed output signals and a driver circuit configured to convert the series of timed output signals into inverter gating signals. The portable service controller further includes a three-phase brushless motor inverter configured to convert inverter gating signals into control signals for a brushless motor of the electro-mechanical actuator. The portable service controller contains a motor brake on/off circuitry for engaging and disengaging the electro-mechanical actuator motor brake. The battery, the three-phase brushless motor inverter, the driver circuit, the phase sequencer and the user interface are all disposed in a housing. | 06-05-2014 |
20140167654 | CIRCUIT ARRANGEMENTS AND METHODS FOR OPERATING AN ELECTRICAL MACHINE - A circuit arrangement is described comprising a first battery; a second battery; an electrical machine connected between the first battery and the second battery wherein the electrical machine is connected to the first battery via a first switching arrangement and the electrical machine is connected to the second battery via a second switching arrangement and a controller configured to control the first switching arrangement and the second switching arrangement such that a current that has a DC component flows through the electrical machine. | 06-19-2014 |
20140167655 | SECURE BATTERY ELEMENT - A battery element includes series-connected electrochemical accumulators applying a difference in potential between first and second poles, two power output terminals, and a securing device. The securing device comprises first and second switches connected in series between the first and second poles. The first switch is a normally-closed switch, and the second switch is a normally-open switch. The normally-open second switch is configured to selectively isolate/connect the first pole and the first terminal, and the normally-closed first switch being configured to selectively isolate/connect the first and second terminals. The electrochemical accumulators are configured to apply a voltage as a control signal for the normally closed first switch. | 06-19-2014 |
20140167656 | BATTERY SYSTEM, ELECTRIC VEHICLE, MOVABLE BODY, POWER STORAGE DEVICE, AND POWER SUPPLY DEVICE - Provided is a battery system capable of accurately calculating a state of charge of a battery cell, an electric vehicle, a movable structure, an electricity storage device, and a power supply device. A current-based SOC calculation unit calculates a current-based SOCi on the basis of current flowing in a battery cell. A voltage-based SOC calculation unit calculates a voltage-based SOCv on the basis of the terminal voltage of the battery cell. A combined SOC calculation unit calculates a combined SOCt by weighting the SOCi and the SOCv with the respective weight coefficients (1−α) and α, and combining the weighted SOCi and SOCv. The weight coefficients (1−α) and α are determined based on whether the battery cell is in a charging state, a discharging state, or a charge/discharge stopped state. | 06-19-2014 |
20140167657 | BATTERY SYSTEM, BATTERY CONTROL DEVICE, ELECTRIC VEHICLE, MOBILE BODY, AND POWER SOURCE DEVICE - A battery module group includes a plurality of battery groups. Each battery group includes a plurality of battery modules. Cell information is supplied from each battery module of the battery module group to a charge/discharge controller. The charge/discharge controller controls the turning on and off of a plurality of switching elements of a connector based on the supplied cell information of each battery module. The plurality of switching elements correspond to the plurality of battery groups, respectively. Thus, the plurality of battery groups are selectively connected to an external object via a DC/AC converter. | 06-19-2014 |
20140176024 | Battery System Having an Intermediate Circuit Voltage which can be Set in a Variable Fashion - A battery system includes a battery, a DC voltage intermediate circuit connected to the battery, an inverter connected to the DC voltage intermediate circuit and an electric motor connected to the inverter. The DC voltage intermediate circuit includes a capacitor, and the battery includes a battery module line having a plurality of battery modules which are connected in series, and a control unit. Each battery module includes a coupling unit and at least one battery cell which is connected between a first input and a second input of the coupling unit. The coupling unit is configured to connect the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module in response to a first control signal, and to connect the first terminal to the second terminal in response to a second control signal. | 06-26-2014 |
20140184110 | Container with touch control arrangement - A touch control arrangement is arranged for a container having a foldable cover being folded between an opened position and a closed position via an actuation unit. The touch control arrangement includes a power source and a touch actuator electrically linked to the power source, wherein the touch actuator is located out of the storage cavity of the container body and is arranged in such a manner that when the touch actuator is activated by a presence of a touch, the actuation unit is actuated to move the foldable cover from the closed position to the opened position. | 07-03-2014 |
20140184111 | ELECTRIC MOTOR DRIVE SYSTEM CAPTURE AND CONTROL APPARATUS FOR ENERGY SAVINGS - An electric motor drive system capture and control apparatus for energy savings has an alternating current power source electrically connected to a direct current motor. A power rectifier diode rated for the alternating current power source and the direct current motor is electrically connected in a reverse bias mode between the negative supply wire of the direct current motor and a grounded neutral conductor of the alternating current power source. A ground wire is electrically connected to the direct current motor and cross connected to a hot lag wire of the alternating current power source. The direct current motor is voltage matched to the alternating current power source. A transformer is electrically connected to the alternating current power source and the direct current motor. The system may be scaled to work with a power grid or for use in a vehicle. | 07-03-2014 |
20140191692 | SYNCHRONOUS ENERGY SOURCE SWITCHING CONTROLLER AND METHOD OF OPERATION THEREOF - The present invention relates to a motor assembly, a method of operation thereof and a transport vehicle provided with the motor assembly. The motor assembly is provided with an energy source switching controller that is in synchronization with motor operation and provides an improved utilization of energy storage sources in an electric, hybrid electric, or fuel cell based motor vehicle drive train application. | 07-10-2014 |
20140191693 | Power Converter - A power converter includes an inverter, a contactor for connecting a battery to the inverter in order to supply DC power from the battery to the inverter and for disconnecting the battery from the inverter in order to stop an operation to supply the DC power from the battery to the inverter, a smoothing capacitor connected in parallel to the battery through the contactor, a discharge circuit that is provided with a discharge resistor and a switching device connected in series to the discharge resistor and is connected in parallel to the smoothing capacitor to discharge electric charge from the smoothing capacitor, a voltage measurement circuit, a voltage-dividing circuit for dividing the voltage across the terminals of the smoothing capacitor to generate a partial voltage to be input to the voltage measurement circuit and a control circuit of the switching device. | 07-10-2014 |
20140203735 | ELECTRIC STORAGE SYSTEM AND CONTROL METHOD OF ELECTRIC STORAGE SYSTEM - An electric storage system includes a charger which supplies power from an external power source to an electric storage apparatus and supplies power of the electric storage apparatus to an external device. A first and a second system main relay allow connection between a positive electrode terminal and a negative electrode terminal of the electric storage apparatus and a load, respectively. A third system main relay is connected in series with a current limiting resistor and, together with the current limiting resistor, is connected in parallel with the first system main relay. A first and a second charge relay allow connection between the positive electrode terminal and the negative electrode terminal of the electric storage apparatus and the charger, respectively. A third charge relay is connected in series with the abovementioned current limiting resistor and, together with the current limiting resistor, is connected in parallel with the first charge relay. | 07-24-2014 |
20140203736 | BATTERY MANAGEMENT SYSTEM AND BATTERY PACK HAVING THE SAME - A battery management system and a battery pack having the same including a charging circuit path for charging a battery and a discharging circuit path for discharging the battery is disclosed. The battery pack also includes a controller configured to control a charge switch unit in the charging circuit path during charging and to compensate for a change in voltage across the battery during discharging by controlling a discharge switch unit in the discharging circuit path to supply substantially constant power to an output terminal unit. | 07-24-2014 |
20140203737 | Assisting Converter - What is described is a battery management architecture that eliminates previously described problems of the previous solutions and compensates for the extra cost of a cell-balancing circuit. These advantages are achieved by integrating the voltage step-up and balancing functions as well as charging functions inside a single converter topology. Instead of providing the entire output voltage and power, the converter in this configuration is merely assisting the battery by providing a portion of the power delivered to the load, rather than the entirety of the power delivered to the load. This portion of power is proportional to the difference between the output and the battery pack voltages. | 07-24-2014 |
20140203738 | VEHICLE INCLUDING POWER STORAGE UNIT - Deterioration of a power storage unit included in a vehicle is prevented or the power storage unit that has deteriorated is repaired, and the charge and discharge performance of the power storage unit is maximized to be maintained for a long time. Attention has focused on a reaction product formed on an electrode surface which causes malfunction or deterioration of a power storage unit such as a lithium-ion secondary battery. In the power storage unit used for a vehicle that runs on the power of an electric motor, rapid discharge occurring in the acceleration of the vehicle or the like tends to promote the solidification of the reaction product. The reaction product is removed by application of an electrical stimulus, specifically, an inversion pulse voltage. | 07-24-2014 |
20140203739 | AIRCRAFT COMPRISING A DISTRIBUTED ELECTRIC POWER UNIT WITH FREE WHEELS - The invention relates to a rotary- or fixed-wing aircraft comprising one or more rotors and/or one or more propellers, in which the rotor(s) and/or propeller(s) are rotated at a variable or constant speed by at least one shaft (Rp | 07-24-2014 |
20140210379 | POWER TOOL HAVING A BRUSHLESS MOTOR AND A CONTROL UNIT FOR CONTROLLING THE BRUSHLESS MOTOR - A power tool according to one aspect of one embodiment described in the disclosure includes a brushless motor, a battery voltage detection unit configured to detect a voltage of a battery that provides energy for driving the brushless motor, a rotational position detection unit configured to detect a rotational position of the brushless motor, and a control unit configured to control a drive output supplied to the brushless motor based at least in part on a signal from the rotational position detection unit. The control unit controls a current conduction angle and/or an advance angle supplied to the brushless motor so that, during control of the drive output to the brushless motor, a rotational speed or a conducting current of the brushless motor approaches or reaches a target value, the target value being based at least in part on a battery voltage detected by the battery voltage detection unit. | 07-31-2014 |
20140210380 | Battery having a Plurality of Battery Cells and Method for Regulating a Battery Voltage of a Battery Using Switch-On Probabilities of the Battery Cells - A method for regulating a battery voltage of a battery having a plurality of battery cells configured to be selectively bridged and connected to a battery string includes regulating the battery voltage to a desired nominal voltage by alternately driving the battery cells. The method further includes transmitting a value for a nominal switch-on probability to one or more driving circuits of the battery cells, with the result that the one or more battery cells are each switched with an allocated switch-on probability. | 07-31-2014 |
20140217933 | METHOD AND SYSTEM FOR CONTROLLING MOTOR - A method for controlling a motor to enable drive assist of an engine with a high torque in a low rotation speed range as well as synchronized driving in a high rotation speed range. The method includes controlling a motor connected to a low voltage battery. The motor has a reluctance torque higher than a magnetic torque at a time of a highest torque generation. The motor includes a rotor connected to an output shaft of an engine. | 08-07-2014 |
20140217934 | MOTOR-DRIVEN APPLIANCE AND BATTERY PACK - A motor-driven appliance includes a battery; a motor including permanent magnets as field magnets; a momentary maximum current upper limit storage unit in which a predetermined momentary maximum current upper limit is stored; a current detection unit that detects a current flowing in the motor; a current threshold setting unit that generates a current threshold based on the momentary maximum current upper limit, and outputs the generated current threshold; a current exceedance determination unit that determines whether the current detected by the current detection unit has become equal to or greater than the current threshold, and outputs an interruption signal used to interrupt a current path from the battery to the motor when the detected current has become equal to or greater than the current threshold; and a current flow interruption unit that interrupts the current path when the interruption signal is outputted from the current exceedance determination unit. | 08-07-2014 |
20140217935 | Motor Control Device - A motor control device according to the invention includes: a mode setting section that sets one of a first mode in which a charge/discharge current of a secondary battery varies according to load fluctuation of a motor and a second mode in which the charge/discharge current of the secondary battery becomes constant for a predetermined time regardless of the load fluctuation of the motor; and a drive signal generating section that generates a drive signal for driving the motor on the basis of the mode that is set by the mode setting section, a torque command value, and a motor rotation speed. | 08-07-2014 |
20140232301 | METHOD AND DEVICE FOR CHARGING A BATTERY OF AN ELECTRICAL DRIVE USING COMPONENTS OF THE ELECTRICAL DRIVE - The invention relates to a multi-stage charging device for a battery of a battery operated electrical motor. The multistage charging device comprises a buck converter, an intermediate circuit and a boost converter in order to generate a suitable direct charging current from a (one or three-phase) alternating current provided by a power connection. According to the invention, components of the electrical drive are used for the boost converter and the intermediate circuit: the electrical motor functions as an intermediate circuit and the drive converter functions as a boost converter. According to the invention, the coupling of the electrical motor to the network-side buck converter occurs so that at least half the charging current flows through at least one of the at least three coils of the electrical drive. The invention further relates to a corresponding method and to a corresponding use of the drive components. | 08-21-2014 |
20140232302 | BATTERY PROCESSING APPARATUS, VEHICLE, BATTERY PROCESSING METHOD, AND BATTERY PROCESSING PROGRAM - A battery processing apparatus includes a chargeable and dischargable battery storing electric power to be supplied to a motor for driving a wheel, and a controller performing discharge allowing processing of switching from a second state in which discharge from the battery to a load is not allowed to a first state in which the discharge from the battery to the load is allowed upon reception of on a discharge allowing signal in an overcharged state of the battery in which charge of the battery is suppressed due to an electric storage amount in the battery. | 08-21-2014 |
20140239856 | ELECTRICAL ENERGY STORAGE SYSTEM FOR TRACTION POWER SUPPLY - An energy storage system for connection to a traction power supply that provides power to an electric vehicle. The energy storage system includes a power controller that controls a DC-DC converter to transfer electrical energy from the traction power supply to electrical energy storage when the train is braking. The power controller also controls the converter to transfer electrical energy from the electrical energy storage to the traction power supply when the train is accelerating. The controller slows the rate of energy transfer when upper and lower voltage boundary limits of the electrical energy storage are approached, respectively. | 08-28-2014 |
20140252996 | HYBRID ELECTRIC DEVICE - A device includes a housing configured with a working element and a motor configured for urging motion of the working element. The device further includes a power control module. The power control module is configurable for being in electrical connection with at least one of the motor, a first power source configuration and a second power source configuration. The first power source configuration is configurable for being electrically connected to a battery assembly having a DC power output. The second power source configuration is configurable for being electrically connected to a power inverter, the power inverter configured for receiving an AC power and further configured for outputting a DC power to the second power source configuration. The power control module includes an automatic power selection configuration for automatically selecting the second power source configuration when the second power source configuration receives DC power from the power inverter. | 09-11-2014 |
20140252997 | SECURE METHOD OF CUTTING OFF THE POWER SUPPLY OF AN ELECTRIC MOTOR AND CORRESPONDING DEVICE - A device is provided for controlling and supplying power to a multi-phase electric motor powered by a main battery. The device includes an electronic power module, a drive module, and a monitoring unit. The electronic power module supplies power from the main battery to phases of the motor. The drive module supplies electric drive signals to transistors of the electronic power module. The monitoring unit supplies drive instructions, which define chopping ratios of the transistors of the electronic power module, to the drive module. The drive module is electrically powered by a connector that includes a relay capable of instantaneously interrupting supply of power to the drive module, in order to stop the motor, without interrupting supply of power to the monitoring unit. | 09-11-2014 |
20140265945 | Electric Drive System - An electric drive system includes a rechargeable battery and a power supply bus. A first power converter circuit is coupled between the rechargeable battery and the power supply bus. A motor is configured to be coupled to the power supply bus. A control circuit is configured to operate the first power converter circuit in one of a power supply mode in which the first power converter circuit supplies at least one of an alternating current and a rectified alternating current to the power supply bus, and a battery charging mode in which the first power converter circuit charges the rechargeable battery. | 09-18-2014 |
20140265946 | PORTABLE MOTOR DRIVE SYSTEM - Systems and methods for driving a motor are provided. One implementation of a drive system comprises a user interface, a variable speed drive, and a controller. The user interface enables a user to select an operating frequency set point and an operating voltage set point. The operating frequency set point is selected from a range of frequency set points and the operating voltage set point is selected from a range of voltage set points. The variable speed drive is configured to drive a motor at the selected operating frequency set point and selected operating voltage set point. The controller is configured to receive input from the user interface and control the operating frequency and operating voltage of the variable speed drive. | 09-18-2014 |
20140265947 | DRIVER CIRCUIT AND THREE PHASE DIRECT CURRENT BRUSHLESS MOTOR - A driver circuit for a three phase direct current (DC) brushless motor include: three bridge arms each having a first switch, a second switch, and a first diode and a second diode respectively and electrically coupled with the first switch and the second switch in parallel, and three capacitor arms each having a first capacitor and a second capacitor to electrically couple a center tap of a corresponding phase coil of the DC brushless motor to a respective on of positive and negative terminals of a DC power supply. | 09-18-2014 |
20140265948 | ELECTRIC POWER TOOL - An electric power tool includes a power supply, a motor capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit capable of performing a voltage step-up operation to raise a voltage supplied from the power supply and supply a raised voltage to the motor. The voltage step-up unit is configured to change the voltage step-up operation in accordance with whether a rotation mode of the motor is the forward rotation mode or the reverse rotation mode. | 09-18-2014 |
20140265949 | MOTOR CONTROL DEVICES AND METHODS - A system and method for preventing damage to a controller of an electric motor in a vehicle from back electromotive force, the vehicle having a battery, includes monitoring, in a circuit path, a voltage and a rotational speed generated by back-driving the motor. If power is supplied to the controller by the battery, the method includes comparing the voltage to an upper voltage threshold, comparing the rotational speed to an upper rotational speed threshold, and, if the voltage exceeds the upper voltage threshold or the rotational speed exceeds the upper rotational speed threshold, clamping the circuit path to the battery to charge the battery with the voltage. The method is performed by an electronic controller that may detect the voltage and rotational speed via controller ports, sensor transmissions, and the like. | 09-18-2014 |
20140285123 | Solar A/C Direct Motor Drive - An electrical device comprising: a high voltage DC power storage system; a variable frequency drive comprising DC terminals, a variable frequency inverter, and a variable drive output, wherein said high voltage DC power source is direct fed to said DC terminals; and an AC motor connected to said variable drive output. | 09-25-2014 |
20140292234 | PLASMA HYDROGEN GENERATION DEVICE FOR NEW ENERGY CAR - A plasma hydrogen generation device includes a liquid fuel storage bottle, an air filtering element, a large capacitor battery and a fuel cell power set. In operation, the carbon hydrogen compound is decomposed into hydrogen and carbon without carbon dioxide generation when a liquid carbon hydrogen compound is decomposed in the plasma hydrocarbon decomposition element. The produced hydrogen is directly provided to fuel cells on the car to generate electric power. As such, the resulting electric power may be directly used for the electric motor driving system on the car. Further, it is also suitable for a home electric power supply device with home or industry electricity specification, or used in combination with an electric vehicle (EV) car driving system to become a hydrogen hybrid EV car, or used in combination with a natural gas internal combustion engine to become a hydrogen hybrid car driving system. | 10-02-2014 |
20140292235 | ELECTRIC VEHICLE AND DRIVING METHOD OF ELECTRIC VEHICLE - An electric vehicle comprises an electric motor for driving a wheel; a main battery for activating the electric motor; a case to which a sub-battery for activating the electric motor is detachably mounted; a connection terminal to which a terminal of the sub-battery is connected; a mounting detecting sensor for detecting that the connection terminal is connected to the terminal of the sub-battery; and a controller which detects the SOCs of the batteries and is configured such that electric power is supplied preferentially from the mounted sub-battery to the electric motor, when the SOC of the sub-battery is equal to or greater than a predetermined value, and electric power is supplied from the main battery to the electric motor, when the SOC of the sub-battery is less than the predetermined value. | 10-02-2014 |
20140312809 | APPARATUS FOR CONTROLLING A MULTI-WINDING ROTARY MACHINE - An apparatus for controlling a multi-winding rotary machine including an armature formed of a plurality of winding sets. In the apparatus, a command voltage calculator calculates command voltages to be applied to each winding set so as to control currents detected by a current detector to their respectively corresponding command currents. An interfering voltage calculator calculates, for each of the winding sets, interfering voltages proportional to the rotation speed of the rotary machine. An interfering voltage compensator compensates, for each of the winding sets, the command voltages for their respectively corresponding interfering voltages. An operation unit operates a voltage applicator to apply output values of the interfering voltage compensator to each winding set. | 10-23-2014 |
20140312810 | ELECTRIC VEHICLE CONTROL APPARATUS AND ELECTRIC VEHICLE - According to one embodiment, an electric vehicle control apparatus is provided with a converter having a diode and a switching device which convert an AC voltage or a DC voltage supplied from an input side into a DC voltage, whose output side is connected to a main motor through an inverter, a battery connected to the converter through a reactor, to provide a power source for the main motor, and a boosting chopper circuit composed the diode and the switching device which the converter has, so as to boost a voltage of the battery. | 10-23-2014 |
20140320047 | DRIVE SYSTEM AND VEHICLE INCLUDING DRIVE SYSTEM - A drive system includes a first switching unit, a first capacitor, a step-down circuit, a second capacitor, and a discharging unit. The first switching unit is configured to convert energy, stored in an electrical storage device, to electric power that is supplied to a motor. The first capacitor is connected to the first switching unit and configured to smooth voltage that is supplied from the electrical storage device to the first switching unit. The step-down circuit is connected to the first capacitor and configured to step down voltage of the first capacitor. The second capacitor is connected to the step-down circuit and configured to draw electric charge stored in the first capacitor. The discharging unit is configured to discharge electric charge stored in the second capacitor. | 10-30-2014 |
20140333237 | SHREDDER LOAD OPTIMIZATION SYSTEM AND METHOD - An electrical power load optimization system operable to regulate a power supply to one or more industrial machines so that a load imposed on the power supply by the one or more machines is consistent and fluctuations are minimized. | 11-13-2014 |
20140333238 | SHOVEL - A shovel includes a power storage device, and an electric motor to which electric power is supplied from the power storage device. The power storage device includes a housing; a first power storage module including a plurality of laminated power storage cells stacked in a first direction, a first terminal, and a second terminal and being housed within the housing; a first electrode and a second electrode fixed to the housing; a first relay current path configured to electrically connect the first terminal to the first electrode; and a second relay current path configured to electrically connect the second terminal to the second electrode. The first relay current path includes a distance adjustment structure configured to compensate variations in the distance between the first electrode and the first terminal. | 11-13-2014 |
20140333239 | SHOVEL - A shovel includes a power storage module; and an electric motor driven by electric power stored in the power storage module. The power storage module includes a plurality of cell units stacked to form a stacked structure. Each of the cell units has a power storage cell including a pair of electrode tabs; and a frame body configured to support the power storage cell. Each of the frame bodies has a screw-locking portion formed on a surface facing laterally and outwardly from the stacked structure. The plurality of power storage cells are electrically connected by screw-locking the electrode tabs of the power storage cells to the screw-locking portions. | 11-13-2014 |
20140340004 | COMBINATION CHARGER AND MOTIVE POWER DEVICE - A combined battery charger and motor driver circuit assembly includes a rechargeable battery, a traction motor configured to accept a pulse-width-modulated (PWM) drive, a PNP transistor array, a charging source of chopped and rectified DC, and a control circuit configured to apply a discrete PWM drive signal to the gate of each transistor in the PNP transistor array. | 11-20-2014 |
20140346981 | STORAGE MODULE VOLTAGE EQUALIZER, STORAGE DEVICE, AND OPERATING MACHINE - A storage module voltage equalizer includes a plurality of voltage equalization circuits that are prepared to correspond to a plurality of storage cells which are arranged to be lined up in a first direction, and equalize an inter-terminal voltage of the plurality of storage cells, and a plurality of mounting substrates that are stacked, in which the plurality of voltage equalization circuits are mounted, in a distributed manner, on the plurality of mounting substrates. | 11-27-2014 |
20140346982 | Method and Apparatuses for Authenticating Measurement Data for a Battery - A method for authenticating measurement data for a battery that comprises at least one battery module, having an associated module controller, and a central controller has the following steps: capture of measurement data from battery units by the module controller; ascertainment of at least one additional information carrier, which is set up to authenticate the measurement data, by the module controller; transmission of the measurement data and of the additional information carrier from the module controller to the central controller; and validation of the measurement data by the central controller using the additional information carrier. Furthermore, a data structure, a computer program and a battery management system are specified that are set up to perform the method, and also a battery and a motor vehicle, the drive system of which is connected to a battery of this kind. | 11-27-2014 |
20140354195 | POWER SYSTEM SWITCHING BETWEEN CHARGE-DISCHARGE FUNCTION AND DRIVING FUNCTION AND ELECTRIC VEHICLE COMPRISING THE SAME - A power system switching between a charge-discharge function and a driving function and an electric vehicle including the same are provided. The power system includes a power battery; a charge-discharge socket; a bidirectional DC/DC module; a driving control switch connected with the power battery and the bidirectional DC/DC module; a bidirectional DC/AC module connected with the driving control switch and the power battery; a motor control switch connected with the bidirectional DC/AC module and a motor; a charge-discharge control module connected with the bidirectional DC/AC module and the charge-discharge socket; and a controller module configured to establish a path between the power battery and the motor when a current operation mode of the power system is a driving mode, and to establish a path between the charge-discharge socket and the power battery when the current operation mode of the power system is a charge-discharge mode. | 12-04-2014 |
20140368132 | Converter Unit for an Asynchronous Machine - A converter unit having at least one output. The at least one output is configured to be connected to a coil of an asynchronous machine. The converter unit is configured to provide several voltage levels at the at least one output. | 12-18-2014 |
20140375231 | BATTERY PACK - A battery pack includes: a battery; a notification unit configured to notify that a fully charged state is reached; a determination unit configured to determine whether the fully charged state is reached; a processing unit configured to execute a full charge process if the fully charged state is determined, the full charge process being one of causing the notification unit to make a notification and maintaining a possible state, in which making a notification is possible; and a factor detection unit configured to detect occurrence of a predetermined increase factor during execution of the full charge process, the increase factor leading to increase in a chargeable capacity of the battery as compared with the time when the fully charged state is determined. The processing unit stops the full charge process if occurrence of the increase factor is detected during execution of the full charge process. | 12-25-2014 |
20140375232 | Vehicle with Electrical Machine and Method for Operating the Same - A vehicle is provided with a multiphase electrical machine, a first onboard electrical sub-system having a first nominal DC voltage, and a second onboard electrical sub-system having a second nominal DC voltage. The electrical machine includes a rotor, a first stator system and a second stator system. The first onboard electrical sub-system includes a first inverter with a first link capacitor. The first stator system is associated with the first invertor. The second onboard electrical sub-system includes a second inverter with a second link capacitor. The second stator system is associated with the second inverter. The first stator system is configured in a star configuration. The second stator system is configured in a star configuration or in a delta configuration. A transfer circuit connects the star point of the first stator system to a higher potential of the second onboard electrical sub-system. | 12-25-2014 |
20150008849 | Motor Control for Stability and Power Supply Protection - A method and apparatus for controlling a motor. The motor comprises windings. A switch bridge comprising a plurality of switches is configured to couple a power source to the windings. A motor controller is configured to control the plurality of switches. An undesired condition identifier is configured to identify an undesired condition when the motor is providing power to the power source, wherein the undesired condition is defined with respect to a characteristic of the power source. An undesired condition reducer is configured to reduce the undesired condition in response to identifying the undesired condition by the undesired condition identifier. | 01-08-2015 |
20150008850 | ELECTRIC VEHICLE AND ACTIVE DISCHARGING SYSTEM FOR ELECTRIC VEHICLE - An active discharging system for an electric vehicle and an electric vehicle including the same are provided. The active discharging system includes a power battery; a bus capacitor; a charge-discharge socket; a bidirectional DC/DC module; a driving control switch; a bidirectional DC/AC module; a motor control switch connected with the bidirectional DC/AC module and a motor; a charge-discharge control module connected with the bidirectional DC/AC module and the charge-discharge socket; and a controller module configured to control the driving control switch, the motor control switch and the charge-discharge control module according to a current operation mode of the active discharging system, to control the bus capacitor to continue charging the power battery after a charge is finished, and to control the bus capacitor to continue discharging after a discharge is finished until a voltage across the bus capacitor is less than a first predetermined value. | 01-08-2015 |
20150015168 | VEHICULAR DRIVING SYSTEM - A vehicular driving system includes a rotating electric machine, an inverter and a controller. The rotating electric machine is constantly connected to an axle shaft. The inverter has an upper-arm device and a lower-arm device corresponding to each of three phases of the rotating electric machine. The inverter is configured to perform electric power conversion between a DC power supply and the rotating electric machine and to supply three-phase AC power to the rotating electric machine. The controller is configured to perform an operation to reduce a rotational speed of the rotating electric machine when a short-circuit fault occurs to the inverter. | 01-15-2015 |
20150022124 | Self Sustainable Automobile - A self-sustainable automobile is disclosed in the present invention. Said self-sustainable automobile uses chargeable batteries as its power source. The motor and chargeable batteries is matched in such a way that the time for fully charging the batteries is faster than the time for fully discharging the batteries. Thus engine requires no external source of energy to be or remain in motion. | 01-22-2015 |
20150022125 | ELECTRIC TOOL - An electric tool for driving a tip tool, the electric tool includes: a removable battery; the brushless motor configured to generate a driving force for driving the tip tool; an inverter circuit configured to supply drive power from the removable battery to the brushless motor using a plurality of semiconductor switching elements; a controller configured to control the inverter circuit to control rotation of the brushless motor; a temperature detector configured to detect a temperature of the brushless motor or the semiconductor switching elements; and a voltage detector configured to detect a voltage of the battery. The brushless motor is driven such that a duty ratio of PWM drive signal for driving the semiconductor switching elements is determined based on relationship between the temperature detected by the temperature detector and the voltage detected by the voltage detector. | 01-22-2015 |
20150035459 | ELECTRIC VEHICLE AND POWER SYSTEM AND MOTOR CONTROLLER FOR ELECTRIC VEHICLE - An electric vehicle and a power system and a motor controller for an electric vehicle are provided. The power system includes a power battery; a charging-discharging socket; a bidirectional DC/DC module connected with the power battery; a driving control switch connected with the power battery and the bidirectional DC/DC module; a bidirectional DC/AC module connected with the driving control switch and the power battery; a motor control switch connected with the bidirectional DC/AC module and a motor; a charging-discharging control module connected with the bidirectional DC/AC module and the charging-discharging socket; and a controller module connected with and configured to control the driving control switch, the motor control switch and the charging-discharging control module according to a current operation mode of the power system. | 02-05-2015 |
20150042247 | MOTOR-DRIVEN APPLIANCE - A motor-driven appliance includes a motor and a control unit that controls a drive output to the motor. The control unit detects a state amount indicating an operational state of the motor to derive a fluctuation range of fluctuation in the state amount. The control unit detects whether the motor is in an unloaded state or in a loaded state, based on the derived fluctuation range to perform the drive output to the motor, based on the detected result. | 02-12-2015 |
20150054428 | SYSTEM AND METHOD TO DIVERT INDUCTIVE ENERGY FROM CELLS - A power tool/battery pack combination includes an electric motor, one or more electrochemical cells, and a capacitive element. The electric motor is connected in series to a first switch. The series combination of the electric motor and the first switch is connected to a first terminal and a second terminal. The one or more electrochemical cells are connected across a third terminal and a fourth terminal. The third terminal and the fourth terminal are coupled respectively to the first terminal and the second terminal. The one or more electrochemical cells supply power to the electric motor via the first switch. The capacitive element includes one or more capacitors. The capacitive element is connected across the third terminal and the fourth terminal. The capacitive element is capable of storing inductive energy generated by the one or more electrochemical cells. | 02-26-2015 |
20150061549 | BATTERY PACK, POWER TOOL AND BATTERY CHARGER - A battery pack includes: a plus terminal and a minus terminal; a secondary battery; and a booster. The secondary battery has a rated voltage and is configured to output a battery voltage across the plus terminal and the minus terminal. A charging device and a discharging device are selectively connectable to the plus terminal and the minus terminal. The charging device charges the secondary battery. The discharging device performs a job with the battery voltage supplied from the secondary battery. The booster is configured to boost the battery voltage to a voltage greater than the rated voltage. The voltage boosted is used as a control voltage for either connecting the secondary battery to or disconnecting the secondary battery from the charging device or the discharging device. | 03-05-2015 |
20150069935 | CONTROL DEVICE FOR HYBRID VEHICLE AND CONTROL METHOD FOR HYBRID VEHICLE - A control device for a hybrid vehicle includes: a current command value calculator configured to calculate torque and a weak field current command values input to the inverter; and a current command value correction calculator configured to calculate torque and weak field current correction values added to the torque and weak field current command values, wherein when an accumulation of electricity of the electricity storage device is equal to or larger than a reference value, the current command value calculator is configured to calculate the torque and weak field current command values to make a load applied to the engine by the motor generator zero, and the current command value correction calculator is configured to calculate the torque and weak field current correction values to make a load applied to the engine by the motor driving system other than the motor generator zero. | 03-12-2015 |
20150069936 | INVERTER-CHARGER INTEGRATED DEVICE FOR ELECTRIC VEHICLE - An inverter-charger integrated device for an electric vehicle is provided. The inverter-charger integrated device for the electric vehicle includes a motor; a power input unit; a rectifying unit; an inverter; and a control unit, wherein the inverter comprises a first group of switches including first and second switches, a second group of switches including third and fourth switches, and a third group of switches including fifth and sixth switches, the rectifying unit is directly connected to the first of the first to third groups of switches, and phases of the motor are respectively connected to the first to third group of switches. | 03-12-2015 |
20150069937 | SEMICONDUCTOR DEVICE - A semiconductor device includes a control section, a first arm, and a second arm; and has an H-bridge circuit to supply an input current supplied from a power source to an output terminal as a reversible electric current on the basis of a control signal outputted from the control section and a reverse-connection-time backflow prevention circuit to prevent an electric current in a direction opposite to the direction of the input current from being supplied to the H-bridge circuit. The first arm is formed over a first island. The second arm is formed over a second island. The control section and the reverse-connection-time backflow prevention circuit are formed over a third island. | 03-12-2015 |
20150084554 | ELECTRIC POWER TOOL - An electric power tool includes a rechargeable battery, a motor, a detector that detects a parameter that affects a voltage drop of the rechargeable battery and outputs a detection signal corresponding to the detected parameter, a controller that receives the detection signal and generates a control signal in accordance with the detection signal, and a power switching unit operated in accordance with the control signal from the controller to switch between a situation in which the rechargeable battery supplies electric power to the motor and a situation in which the rechargeable battery stops supplying electric power to the motor. The controller controls the power switching unit using a pulse width modulation (PWM) control signal when the electric power tool is activated. The controller changes a duty ratio of the PWM control signal in accordance with the detection signal of the detector. | 03-26-2015 |
20150091479 | Electric Vehicle Propulsion System Using Magnetic Piston Engine - An electrical vehicle propulsion system having dual electric magnetic piston engines is disclosed. The first magnetic piston engine is used to provide propulsive force to the vehicle while the second magnetic piston engine is used to drive a DC electric generator. The first and second electric piston engines are driven by current from a series of rechargeable batteries which are at least partially recharged by the DC electric generator. The recharging of the batteries being done via a battery controller which is configured to recharge the batteries cyclically such that while some batteries are drained to provide current for the electric magnetic piston engines, other batteries are recharged. | 04-02-2015 |
20150108925 | MODULAR STACKED DC ARCHITECTURE TRACTION SYSTEM AND METHOD OF MAKING SAME - A modular stacked DC architecture for traction system includes a propulsion system includes an electric drive, a direct current (DC) link electrically coupled to the electric drive, and a first DC-DC converter coupled to the DC link. A first energy storage device (ESD) is electrically coupled to the first DC-DC converter, and a second DC-DC converter is coupled to the DC link and to the first DC-DC converter. The system also includes a second energy storage device electrically coupled to the second DC-DC converter and a controller coupled to the first and second DC-DC converters and configured to control a transfer of energy between the first ESD and the DC link via the first and second DC-DC converters. | 04-23-2015 |
20150137714 | VEHICLE MOTOR DRIVE CIRCUIT - Disclosed are a vehicle motor drive circuit and a driving method thereof. In the vehicle motor drive circuit according to the present invention, when the floating voltage is generated on the digital ground line due to a short circuit or a poor contact, the switch control signal is connected to the motor ground power supply to lower the signal level of the switch control signal in response to the voltage difference produced between the digital ground line and the motor ground line. Therefore, it is possible to prevent an erroneous operation of the motor switch or the motor. Accordingly, it is possible to prevent a damage of the motor or the motor switch and a secondary problem caused by unintentional operation of the motor. | 05-21-2015 |
20150137715 | Controlled Power Fade For Battery Powered Devices - A method is provided for operating a power tool having a motor powered by a battery. The method includes: delivering power from the battery to the motor in accordance with an operator input; detecting a condition of the power tool indicating a shutdown of the power is imminent; and fading the power delivered from the battery to the motor, in response to the detected condition, through the use of a controller residing in the power tool. | 05-21-2015 |
20150145443 | Autonomous Battery Balancing - A device is introduced for cell-balancing a plurality of battery cells connected in series. The device includes a measuring device which is connectable to each of the battery cells and which is configured to generate a current which is proportional to a minimum cell voltage of all the cell voltages of the battery cells and to output the current to resistors which are connected in series. The device also contains a multiplicity of comparators which compare a cell voltage of an assigned battery cell to the minimum cell voltage which is replicated by the current which is proportional to the minimum cell voltage and the resistors. The comparators are configured to output a control signal, which is dependent on a result of the comparison, to an assigned discharging unit which allows a discharge current to flow from the respective battery cell as a function of the control signal. | 05-28-2015 |
20150145444 | BATTERY-POWERED CORDLESS CLEANING SYSTEM - A cleaning system including a motor, an impeller driven by the motor, a battery receptacle, and a motor controller. The battery receptacle is configured to receive a battery pack. The battery pack includes one or more battery cells and a battery controller. The motor controller is configured to receive from the battery controller one of a first type of data and a second type of data, and operate the motor at a defined speed, the defined speed being a first speed upon receiving the first type of data, and a second speed upon receiving the second type of data. | 05-28-2015 |
20150291045 | ELECTRIC STORAGE DEVICE FOR VEHICLE DEPLOYMENT - An upper chamber and a lower chamber are provided in a housing of an electric storage device for vehicle deployment by a middle base plate. The lower chamber is sealed with respect to the upper chamber by the middle base plate. A battery module is disposed in the lower chamber. A control device, such as a cell controller, and electrical parts, such as a junction box and a service disconnect switch, are mounted in the upper chamber. Strong and weak current system wiring that connect the battery module and the electrical parts respectively penetrate strong and weak current system openings of the middle base plate, and are routed to the upper chamber. The openings, which are penetrated by the strong and the weak current system wiring, are each provided with a sealing member, and thus the lower chamber is sealed with respect to the upper chamber. | 10-15-2015 |
20150303858 | MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD - A motor control device of a vehicle includes a motor and a lock mechanism for locking the rotation of vehicle wheels. The motor control device includes a detection device for detecting release of the lock mechanism, a damping control device for suppressing torsional vibration of a drive shaft, and a current control device for controlling current flowing to the motor on the basis of a motor torque command value set by the damping control device. The current control device channels an excitation current for generating a magnetic flux in the motor on the basis of the detection result of the detection device. | 10-22-2015 |
20150311831 | POWER SUPPLY DEVICE - A power supply device for supplying power to a load by combining a secondary battery and a capacitor includes a bypass switch which enables power to be directly supplied to the load from the capacitor by being switched to a connected state when a voltage of the capacitor is a voltage capable of driving the load, and a first DC-DC converter which enables the voltage of the capacitor to be stepped up and supplied to the load when the voltage of the capacitor drops below a minimum voltage capable of driving the load. | 10-29-2015 |
20150314692 | ELECTRIC VEHICLE - An electric vehicle comprises an electric motor which generates driving power for driving a wheel; a battery case accommodating a battery storing DC power to be supplied to the electric motor, in a battery space in an interior of the battery case; and a plurality of electric components electrically connected to the battery and placed above the battery, wherein the plurality of electric components are placed in a plurality of layers, and arranged vertically to overlap with each other when viewed from above. | 11-05-2015 |
20150318765 | ELECTRICAL MOTORS AND METHODS THEREOF HAVING REDUCED ELECTROMAGNETIC EMISSIONS - Motors and method of operation thereof operable in a running mode wherein the motor operates at a constant speed, and operable in a park mode wherein the motor is dynamically parked. The motor is housed within a housing and includes a rotating park disk configured to cause the motor to dynamically park. A park wire electrically couples the park disk to a switch configured to selectively set the motor to the running mode or the park mode, and a power wire electrically couples the park disk to a power source. Portions of the wires exit the housing so as to be disposed externally of the housing. The park wire is electrically isolated from the power wire during operation of the motor in the running mode and the park wire is electrically connected to the power wire during operation of the motor in the park mode. | 11-05-2015 |
20150318811 | ELECTRICALLY-DRIVEN VEHICLE - An electrically-driven vehicle includes: a battery; an induction motor connected to the battery; a synchronous motor connected to the battery that is connected to the induction motor; and at least one electronic control unit configured to change a slip frequency command of the induction motor based on a predetermined frequency of current fluctuation when a temperature of the battery is low such that an amplitude of the current fluctuation increases, the current fluctuation being any one of current fluctuation of a battery current or current fluctuation of a battery-related current that relates to the battery current. | 11-05-2015 |
20150321578 | Vehicle Having an Electric Machine and Two Onboard Power Subsystems - A vehicle with an N-phase electric motor, with a first onboard electrical subsystem and with a second onboard electrical subsystem, wherein the electric motor includes a rotor and a stator system, and the first onboard electrical subsystem includes an inverter. The stator system is associated with the inverter and the electric motor is operable with an inverter controller according to the principle of field-oriented control such that the stator system is embodied in a star circuit in which the star point can be connected to the second onboard electrical subsystem directly or via a star point switch. The inverter controller includes a current controller and a star point controller, wherein the current controller controls phase currents of the stator system and the star point controller controls a star point current. | 11-12-2015 |
20150325396 | CONTACTOR COIL CURRENT REDUCTION DURING VEHICLE BATTERY CHARGING - Methods and systems are described to control the use of electrical power when charging a traction battery. A vehicle module can drive the contactor coils with two set-points for controlling the power into the contactor coils, namely, a travel or vehicle “on” set point and a charging, vehicle “off” set point. In use, full power is initially applied to the coils to guarantee immediate closure of the contactor. During charging and after closing the contactor, the power is set at the charging, vehicle “off” set point. The travel or vehicle “on” set point is higher than the charging, vehicle “off” set point. Using the charging, vehicle “off” set point reduces electricity consumption. The vehicle “on” set point is at a higher electrical level as it must maintain closure under worst-case vibration and shock conditions considering mounting location, contactor orientation, as well as other characteristics of the vehicle and contactor. | 11-12-2015 |
20150326154 | Motor Control for Stability and Power Supply Protection - A method and apparatus for controlling a motor. The motor comprises windings. A switch bridge comprising a plurality of switches is configured to couple a power source to the windings. A motor controller is configured to control the plurality of switches. An undesired condition identifier is configured to identify an undesired condition when the motor is providing power to the power source, wherein the undesired condition is defined with respect to a characteristic of the power source. An undesired condition reducer is configured to reduce the undesired condition in response to identifying the undesired condition by the undesired condition identifier. | 11-12-2015 |
20150329168 | STRADDLE-TYPE VEHICLE - A straddle-type vehicle includes: a seat to be straddled and sat upon by a rider; an electric motor configured to generate traveling power for driving a wheel; a battery case arranged in front of the seat and accommodating a battery storing DC power to be supplied to the electric motor; and a charging connector which is arranged above the battery and through which the battery is charged from an external power supply, wherein the charging connector includes a connector connection surface to which a power supply connector of the external power supply is connected and which faces a vehicle width direction, and the charging connector is attachable to and detachable from a vehicle body integrally with the battery. | 11-19-2015 |
20150333666 | MULTI-BATTERY PACK FOR POWER TOOLS - A power tool including a motor, a first battery pack, a second battery pack, a first switching element coupled between the first battery pack and the motor, a second switching element coupled between the second battery pack and the motor, and controller coupled to the first switching element and the second switching element. The controller includes a first pulse-width modulation (PWM) output coupled to the first switching element and a first PWM signal to selectively close the first switching element. The controller further includes a second PWM output coupled to the second switching element and a second PWM signal to selectively close the second switching element. | 11-19-2015 |
20150333674 | SEMICONDUCTOR DEVICE AND DRIVING SYSTEM - An output MOS transistor has a drain connected with a power supply and a source connected with an output terminal. The short-circuit MOS transistor has a source connected with the output terminal. The short-circuit MOS transistor is formed in a semiconductor substrate connected with the power supply. A switching device is formed in a semiconductor region which is formed in the semiconductor substrate, and contains a first diffusion layer connected with the gate of the output MOS transistor and a second diffusion layer formed in the semiconductor region and connected with the drain of the short-circuit MOS transistor. | 11-19-2015 |
20150340982 | METHOD AND DEVICE FOR CONTROLLING AN INVERTER - The invention relates to a method ( | 11-26-2015 |
20150343909 | CHARGE/DISCHARGE SYSTEM - A charge/discharge system includes first and second electric chargers that supplies electric power to a motor generator and charges electric power generated by the motor generator, an electric power converter that complementarily performs charging/discharging between the first and second electric chargers, and a controller. The controller controls the electric power converter based on charging conditions of the first and second electric chargers such that electric power charged in the first electric charger is charged in the second electric charger, or electric power charged in the second electric charger is charged in the first electric charger. | 12-03-2015 |
20150352961 | POWER SUPPLY DEVICE FOR HYBRID CONSTRUCTION MACHINERY, AND METHOD THEREFOR - The present disclosure relates to a power supply device for hybrid construction machinery, and more particularly, to a power supply device for hybrid construction machinery, which is capable of reducing engine loads and facilitating improvement of engine efficiency by excluding a starting motor used in general hybrid construction machinery and an alternator for charging a battery from hybrid construction machinery, such as a hybrid excavator or vehicle, which commonly uses an engine and an electric motor as a power source and includes an electric energy storage device, and a method for the same. | 12-10-2015 |
20150352973 | POWER SUPPLY SYSTEM, ELECTRICALLY ASSISTED SYSTEM, AND ELECTRIC GEAR SHIFT SYSTEM - A power supply system is basically provided for supplying electric power to an electric component of a bicycle. The power supply system includes a first battery, a second battery, an operating unit and a power supply controller. The power supply controller is configured to transition an operating state by electric power of the second battery and supply electric power from the first battery to the electric component when the operating unit is operated in a stopped state. | 12-10-2015 |
20150357844 | VEHICULAR ELECTRIC COMPRESSOR - There is provided a vehicular electric compressor capable of discharging electric charges of a capacitor surely and quickly in the event of an impact. The vehicular electric compressor includes: a compressing unit; an electric motor for rotating the compressing unit; and a driving circuit for driving the electric motor. The driving circuit includes: a capacitor; a circuit board provided with an electrically discharging circuit for discharging electric charges accumulated in the capacitor; and a positive electrode interconnection and a negative electrode interconnection configured to electrically connect the capacitor and the circuit board to each other. The vehicular electric compressor further includes a conductive member configured to come into contact with the positive electrode interconnection and the negative electrode interconnection, which are connected to the capacitor, when the positive electrode interconnection and the negative electrode interconnection are moved upon application of external force to the capacitor. | 12-10-2015 |
20150357853 | MOTOR-DRIVEN APPLIANCE AND MAIN BODY THEREOF - A main body of a motor-driven appliance is configured such that a plurality of battery packs are attachable thereto. Each of the battery packs contains a battery. The main body of the motor-driven appliance acquires, from each of the plurality of battery packs, discharge capacity information indicating a discharge capacity of the contained battery. The main body of the motor-driven appliance sets at least one control parameter to control discharge from a power source to a motor, in accordance with at least the discharge capacity information of a battery with a lowest discharge capacity, among the acquired respective discharge capacity information. | 12-10-2015 |
20150357959 | POWER CONVERSION APPARATUS - A power conversion apparatus includes a pair of switching elements that are connected in series between a higher potential side terminal and a lower potential side terminal to form upper and lower arms; a coil whose end is connected between the pair of switching elements; and a controller that calculates, based on a voltage between the higher potential side terminal and the lower potential side terminal and an inductance of the coil, a time rate of change of a current value of a current flowing through the coil, and switches, based on the calculated time rate of change of the current value, between a single arm drive mode in which only one of the pair of switching elements is driven to be turned on/off and a double arm drive mode in which the pair of switching elements are driven to be turned on/off in opposite phase. | 12-10-2015 |
20150364935 | Method for Battery Module Balancing and Battery Management System - The disclosure relates to a method for battery module balancing of a battery, which comprises at least one battery module string, wherein the at least one battery module string has a plurality of battery modules connected in series or parallel, wherein each battery module has a single or a plurality of battery cells connected in parallel or in series and a coupling unit which is designed to switch on and off the battery module, said method comprising the steps of: determining a battery module state of at least two battery modules; switching off individual battery modules having a low battery module state, wherein the low state is defined by a defined ratio to an initial state of the battery modules or by a result of a comparison of all detected battery module states. | 12-17-2015 |
20150365038 | Rotary Electric Machine Driving Device - A rotary electric machine driving device that drives and controls an alternating-current rotary electric machine, the rotary electric machine driving device including: an inverter that is electrically interposed between a direct-current power supply and the rotary electric machine, and converts electric power between a direct current and an alternating current; a smoothing capacitor that is electrically interposed between the direct-current power supply and the inverter, and is connected between a positive pole and a negative pole on a direct-current side of the inverter; and an inverter control unit that controls switching of a switching element of the inverter according to a predefined switching frequency. | 12-17-2015 |
20150367748 | SYSTEM AND METHOD FOR OPTIMIZING HYBRID VEHICLE BATTERY USAGE CONSTRAINTS - A hybrid system including a hybrid control module for operating the hybrid system to as to have its energy storage device meet a predetermined service life metric is disclosed. The hybrid control module stores experimental information indicative of the impact of certain usage parameters on the service life of the energy storage device, monitors the actual usage parameters observed during operation of the hybrid system, and dynamically determines a maximum operating temperature for the energy storage device in order to increase or decrease its utilization by the hybrid system. | 12-24-2015 |
20150375629 | METHOD AND ELECTRIC COMBINED DEVICE FOR POWERING AND CHARGING WITH COMPENSATION MEANS - A combined power supply and charging method includes controlling switching from a motor power supply mode to an energy storage charging mode on an electrical network and vice versa, and compensating for magnetic fields during the energy storage charging mode in order to limit or eliminate movements of a rotor of the motor. | 12-31-2015 |
20150375636 | MOBILE ALUMINUM-AIR BATTERY POWER SYSTEM - A power system is provided for a mobile machine. The power system may have a traction motor configured to propel the mobile machine during a driving operation and to generate electricity during a braking operation. The power system may also have an aluminum-air battery connected to the traction motor. The power system may further have a circuit fluidly connected to the aluminum-air battery and configured to circulate electrolyte and aluminum hydroxide particles produced by the aluminum-air battery. The power system may also have a crystallizer connected to the circuit and configured to crystallize and separate the aluminum hydroxide particles from the electrolyte. The power system may also have a heating chamber configured to heat the aluminum hydroxide particles and produce aluminum oxide separated from the electrolyte, wherein the heating chamber is powered by electricity generated by the traction motor during the braking operation. | 12-31-2015 |
20150377808 | VOLTAGE MEASURING APPARATUS WITH TEMPERATURE ABNORMALITY DETECTION FUNCTION AND POWER CONVERSION APPARATUS - A voltage measuring apparatus is configured to measure voltage between a positive terminal and a negative terminal of a device, and the voltage measuring apparatus includes: a PTC thermistor that is connected to one of terminals of the device; and a measuring circuit that measures voltage of one of the terminals through the PTC thermistor with respect to a specified reference potential and voltage of the other of the terminals with respect to the reference potential. The voltage measuring apparatus detects temperature abnormality of the device or components associated with the device. | 12-31-2015 |
20150381097 | MOTOR DRIVE DEVICE AND MOTOR DRIVE SYSTEM - A motor drive device and motor drive system according to the present invention comprise: a power source terminal; a charging and discharging unit connected in series with the power source terminal; connection terminals to be connected to each of primary and secondary excitation coils for an anti-symmetric two phase motor; and a drive control unit which has a plurality of switching elements and respectively forms first and second paths by turning these switching elements on and off. The first path is used for independently supplying power to the respective primary and secondary excitation coils from the power source terminal via the connection terminals, and the second path is used for independent regeneration of each residual energy remaining in the primary and secondary excitation coils from the respective primary and secondary excitation coils into the charging and discharging unit via the connection terminals. | 12-31-2015 |
20150381167 | GATE DRIVE CIRCUIT AND A METHOD FOR CONTROLLING A POWER TRANSISTOR - A gate drive circuit drives a control terminal of a power transistor and comprises: a drive terminal for electrically coupling the control terminal, a first reference source, a first switch arranged between the first reference source and the control terminal, a switch control circuit and a measurement circuit. The first switch is switched-on to turn-off the power transistor. The switch control circuit switches-off the first switch during a transition period to a fully off-state. The measurement circuit outputs a control signal to the switch control circuit in response to a value of a voltage at the control terminal measured when a discharge current flowing to the drive terminal has been reduced to a predetermined threshold, for switching-on the first switch if the measured value is smaller than a threshold voltage. | 12-31-2015 |
20160001664 | ENERGY STORAGE SYSTEM AND METHOD FOR OPERATING AN ENERGY STORAGE SYSTEM - An energy storage system for a vehicle has at least first and second electric motors and first and second energy storage cells arranged in the vehicle In a traction mode the first energy storage cell is interconnected with the at least one first electric motor and the second energy storage cell is interconnected with the at least one second electric motor. In a charging mode the first and second energy storage cells are interconnected with a respectively dedicated charging device separately and independently of one another or the first and second energy storage cells are interconnected in series and with a common charging device. | 01-07-2016 |
20160001674 | APPARATUS FOR PROVIDING AN ELECTRIC VOLTAGE WITH A SERIAL STACK CONVERTER AND A DRIVE ARRANGEMENT - An apparatus for supplying an electric voltage includes a battery system supplying a battery voltage and having at least two serially-connected battery modules, with each of the battery modules supplying a battery module voltage, and at least two voltage converter modules, with each of the voltage converter modules being electrically connected to a respective one of the at least two battery modules and receiving at a battery module voltage and supplying electric power to a connected electric component. | 01-07-2016 |
20160009184 | APPARATUS AND METHOD FOR ALLEVIATING VOLTAGE DROP OF BATTERY CELL | 01-14-2016 |
20160020714 | MOTOR CONTROL SYSTEM AND CONTROL SYSTEM FOR ELECTRIC MOTOR-DRIVEN VEHICLE - A motor control system includes a drive motor and a deck motor that are connected to a battery, an ECU, and a key switch. The key switch acquires that an operation unit has been turned on, and transmits a restart permission signal to the ECU. When SOC of the battery reaches or falls below a first threshold set in advance, the ECU performs a step of disabling all the motors, and when the restart permission signal is received, the ECU performs a step of executing a decelerated travelling mode where the disabled state of the drive motor is released and an allowed speed of the drive motor is reduced. | 01-21-2016 |
20160023559 | VEHICLE DRIVING SYSTEM AND METHOD - Disclosed are a vehicle driving system and method. According to an embodiment of the present invention, the vehicle driving system converts a voltage of a second battery section, which supplies power to electric parts inside a vehicle, into a voltage of a first battery section, which supplies power to an inverter for operating a motor through a converter; and supplies power having the converted voltage to a capacitor of the inverter when the vehicle starts so that the capacitor can be charged with the power. With this, the pre-charge circuit is removed from the battery system to thereby make the battery system inexpensive, small and light weight. | 01-28-2016 |
20160028344 | Motor Driven Appliance - A motor driven appliance comprises a battery, a motor, at least one switch, a control unit, an abnormality detection unit, a determination unit, and a processing unit. The at least one switch comprises an operation switch. The control unit controls driving of the motor by controlling power supply from the battery to the motor when the operation switch is turned on. The abnormality detection unit detects abnormality of the appliance. The determination unit determines whether the detected abnormality is a first type abnormality that can be cleared when the operation switch is switched from on to off, or is a second type abnormality that cannot be cleared even if the operation switch is merely switched from on to off. The processing unit is configured to perform a specific process when it is determined that the detected abnormality is the second type abnormality. | 01-28-2016 |
20160036365 | Electromechanical power system | 02-04-2016 |
20160039305 | ELECTRIC MACHINE AND POWER SUPPLY SYSTEM HAVING BATTERY PACK - A battery pack for use in an electric machine, includes a first receiving antenna including a first inductor for receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source; and a transferring antenna including a second inductor for generating a second resonant magnetic field by the radio-frequency power. A primary surface of the first inductor is located within the battery pack and is parallel to a first plane of the battery pack. A primary surface of the second inductor is located within the battery pack and is parallel to a second plane of the battery pack. The second plane facing the second inductor intersects with the first plane facing the first inductor at an angle of a range of between 45° and 90° including 45° and 90°. | 02-11-2016 |
20160046200 | DYNAMIC BATTERY SYSTEM VOLTAGE CONTROL THROUGH MIXED DYNAMIC SERIES AND PARALLEL CELL CONNECTIONS - An electrified powertrain for a vehicle includes a battery system configured to switch individual battery modules between series, parallel, and bypassed connections, thereby eliminating the need for a DC-DC converter. The battery system is also configured to generate (via a set of drive switches) AC voltages for an electric motor, thereby eliminating the need for an inverter. Control methods for the electrified powertrain, which could be implemented in a controller of the vehicle, include controlling the switches of the battery system to maintain a constant desired output voltage during both discharging and recharging. The control methods also include controlling the series, parallel, and/or bypass switches of the battery system to bypass malfunctioning battery modules and/or to decrease the output voltage of the battery system below a voltage threshold that requires electrical isolation. | 02-18-2016 |
20160049893 | APPARATUS FOR DRIVING MOTOR AND CONTROLLING METHOD THEREOF - There is provided an apparatus for driving a switched reluctance motor (SRM), including: a motor driver applying a input voltage supplied from a power supply unit to phase windings of the SRM through a switching operation; and a processor controlling the switching operation of the motor driver depending on a driving state of the SRM. | 02-18-2016 |
20160052396 | ELECTRIC VEHICLE - When a temperature rise is required for only a first battery out of first and second batteries, a first relay is turned on to connect the first battery with a first booster circuit (i.e., connect the first battery with a motor side). When a temperature rise is required for only the second battery, on the other hand, a second relay is turned on to connect the second battery with a second booster circuit (i.e., connect the second battery with the motor side). | 02-25-2016 |
20160056744 | CONTROL TECHNIQUES FOR AN INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTOR OF AN ELECTRIFIED VEHICLE - A system and method for controlling an interior permanent magnet synchronous motor (IPMSM) are presented. In an exemplary implementation, phase current ripple estimation techniques are utilized for variable frequency switching pulse-width modulation control of the IPMSM. In one implementation, the method includes controlling a three-phase inverter based on an initial switching frequency to generate a three-phase alternating current (AC) voltage for the IPMSM. Transformed voltages are determined in a rotating reference frame based on the three-phase AC voltage in the stationary reference frame. Current ripples are determined in the rotating reference frame based on the transformed voltages. Phase current ripples are determined in the stationary reference frame based on the current ripples in the rotating reference frame. A modified switching frequency for the three-phase inverter is determined based on the initial switching frequency and the phase current ripples. The three-phase inverter is then controlled based on the modified switching frequency. | 02-25-2016 |
20160059704 | ELECTRIC TRANSPORTATION SYSTEM - An electric transportation system is disclosed. In one aspect, the system includes a wheel, a rechargeable battery having positive and negative poles, and a motor mechanically connected to the wheel and configured to generate a regeneration charge current, the motor including a coil. The system also includes a motor driver connected to the motor and the battery. The motor driver is configured to discharge the battery during a supply period so as to drive the motor and charge the battery with the regeneration charge current, wherein the motor driver includes a plurality of transistors electrically connected to the negative pole during a break period. The system further includes a controller connected to the motor driver and configured to control the motor driver so as to drive the motor during the supply period and control the motor driver so as to charge the battery during the break period. | 03-03-2016 |
20160059715 | POWER SOURCE SYSTEM - A power source system provides: an electrical generator including a rectifying circuit configured by one or more rectifying diodes for allowing electric conduction from a ground side to a battery side; a fuse arranged between the electrical generator and a battery; and a driving apparatus including a circuit configured by one or more semiconductor elements having one or more parasitic diodes for allowing electrical conduction from the ground side to the battery side, and a load. The number of parasitic diodes to be connected in series between a ground and the fuse in the driving apparatus is larger than the number of rectifying diodes to be connected in series between the ground and the battery side in the electrical generator. In addition, the circuit switches electrical conduction in the load. | 03-03-2016 |
20160059728 | Method of Operating Vehicle Powertrain Based on Prediction of How Different Chemical Type Batteries Connected in Parallel will Operate to Output Demanded Current - A powertrain having a battery system including at least two batteries of different chemical types connected in parallel is operated according to predicted responses of the batteries to a demanded current command for the battery system to output a demanded current. The battery responses are predicted directly from the demanded current using a backward-looking model of the battery system. | 03-03-2016 |
20160072107 | Battery Assembly With Snap-In Arrays - A traction battery assembly includes a tray and a pair of adjacent cell arrays disposed on the tray. Each array includes a plurality of stacked cells and a plurality of cell spacers interleaved with the cells. A portion of each of the spacers of one of the arrays is inserted into one of the spacers of the other of the arrays to form a plurality of end-to-end connected spacer pairs configured to secure the arrays together. | 03-10-2016 |
20160072414 | Synchronous Energy Source Switching Controller and Method of Operation Thereof - The present invention relates to a motor assembly, a method of operation thereof and a transport vehicle provided with the motor assembly. The motor assembly is provided with an energy source switching controller that is in synchronization with motor operation and provides an improved utilization of energy storage sources in an electric, hybrid electric, or fuel cell based motor vehicle drive train application. | 03-10-2016 |
20160075243 | ONBOARD CHARGING SYSTEM AND CONTROL METHOD THEREOF - An onboard charging system in which a main battery ( | 03-17-2016 |
20160079895 | ELECTRIC POWER TOOL - An electric power tool includes a drive source, a rechargeable battery that supplies power to the drive source, a voltage meter that measures voltage of the rechargeable battery, a temperature meter that measures temperature of the rechargeable battery, and a drive control unit that regulates the power supplied to the drive source from the rechargeable battery to drive the drive source. If the battery temperature measured by the temperature meter is lower than or equal to a predetermined temperature when the battery voltage measured by the voltage meter is lower than or equal to a predetermined voltage, the drive control unit drives the drive source differently from normal driving that is performed if the battery temperature is higher than the predetermined temperature when the battery voltage is higher than the predetermined voltage. | 03-17-2016 |
20160079903 | RELUCTANCE MOTOR SYSTEM, DRIVING CIRCUIT, AND RELUCTANCE MOTOR - A reluctance motor system includes a reluctance motor having a stator and a rotor, and a driving circuit. The stator includes phase winding sets each of which includes two windings that are connected in series at a corresponding node. The driving circuit includes switching members each of which is coupled electrically to a respective phase winding set, and each of which includes a first switch, a second switch, a first flyback diode, and a second flyback diode. The driving circuit further includes damping capacitor sets each of which includes a first capacitor coupled between the node and a positive terminal of a DC power source, and a second capacitor coupled between the node and a negative terminal of the DC power source. | 03-17-2016 |
20160082858 | POWER DRIVING SYSTEM - A power driving system for an electric vehicle with a motor includes plural battery boxes, a first DC bus, a second DC bus and a power converter. The first DC bus is electrically connected with the battery boxes for selectively receiving electric energy from the battery boxes. The second DC bus is electrically connected with the battery boxes for selectively receiving electric energy from the battery boxes. The power converter is connected between first DC bus and the second DC bus. After the power driving system is changed from a steady state power mode to a driving voltage switching mode, a driving voltage switching process is performed. By the power converter, a voltage of one of the first DC bus and the second DC bus in a steady state is used to adjust a voltage of the other of the first DC bus and the second DC bus. | 03-24-2016 |
20160084911 | SENSOR SYSTEM FOR MEASURING BATTERY INTERNAL STATE - Systems and methods for sensing internal states of vehicle batteries are described. From this internal state information, various physical characteristics of the battery can be measured, calculated or inferred. A vehicle can include an electric motor, a battery to store electrical energy for the electric motor, and a sensor connected to the battery to sense a battery state, to receive an input signal, and to wirelessly transmit an output signal indicating the battery state. The vehicle can also include control circuitry to receive the output signal and to control the electric motor and the battery. In examples, the battery may have a physical property that changes based on a state of the battery. This physical property may be measured by the sensor. The sensor may be passive and built into the structure of the battery. The sensor can be a magnetic field sensor or a surface wave acoustic sensor. | 03-24-2016 |
20160107758 | ELECTRICAL POWER SUPPLY DEVICE FOR AIRCRAFT WITH ELECTRIC PROPULSION - An electrical power supply device for electric propulsion aircraft includes first and second electric motors configured to ensure the propulsion of the aircraft. First and second high-voltage electrical circuits are connected respectively to the two electric motors. A low-voltage electrical circuit is connected to at least one control and/or command facility of the aircraft. First and second pack of batteries are connected respectively to the two high-voltage electrical circuits. First and second battery management systems are connected to the low voltage circuit. Two battery management systems are linked respectively to the two packs of batteries. An electrical converter is connected to the first high-voltage electrical circuit and to the low-voltage electrical circuit. | 04-21-2016 |
20160111993 | METHOD FOR CONTROLLING A SYNCHRONOUS ELECTRICAL MACHINE, CORRESPONDING SYSTEM AND MOTOR VEHICLE COMPRISING THE SYSTEM - A method for controlling a permanent magnet synchronous electrical machine powered by a battery delivering a supply voltage to terminals of the battery, the method including: calculating an initial direct voltage component Vdc and an initial quadratic voltage component in a rotating reference; checking a saturation condition; calculating an angle α of a formula; generating voltages to be applied to the electrical machine if α varies negatively and Vdc is positive or if α varies positively and V dc is negative. The method for example can be applied in a control of synchronous electrical machines. | 04-21-2016 |
20160118922 | Drive battery for in-phase operation of an electric motor, drive system and a method for operating the drive system - A drive battery for n-phase operation of an electric motor includes at least 2*n battery strings each including a plurality of series-connected battery cells. At least one battery cell per battery string is selectively connectable and disconnectable from the particular battery string by activation of a coupling circuit associated with the particular battery cell. Each battery string is also connectable to one of 2*n pole windings of an n-phase operable electric motor, where nεN | 04-28-2016 |
20160118925 | DRIVING SYSTEM FOR HYBRID ELECTRIC VEHICLES AND METHOD OF CONTROLLING PHASE OF PULSE WIDTH MODULATION CARRIER SIGNAL IN THE SAME - Provided is a driving system for hybrid electric vehicles. The driving system includes a DC/DC converter configured to convert low-voltage DC power of a vehicle battery into high-voltage DC power according to a first PWM signal generated based on a first PWM carrier signal, a first inverter configured to convert the high-voltage DC power into first AC power according to a second PWM signal generated based on a second PWM carrier signal, and drive a first driving motor, which operates in one mode of a motoring mode for driving a vehicle and a regenerative mode for collecting kinetic energy of the vehicle as electric energy, according to the first AC power, a second inverter configured to convert the high-voltage DC power into second AC power according to a third PWM signal generated based on a third PWM carrier signal, and drive a second driving motor, which operates in one mode of the motoring mode and the regenerative mode, according to the second AC power, and a PWM phase controller configured to separately control phases of the first to third PWM carrier signals according to an operation mode of each of the first and second driving motors. | 04-28-2016 |
20160121741 | APPARATUS FOR CONVERTING POWER OF ELECTRIC VEHICLE - Provided is a power converting apparatus of an electric vehicle which reduces the number of power semiconductor components to efficiently perform charging, driving, and V2G (vehicle to grid) modes in accordance with choice by a user. The device includes a charging unit which charges commercial power into a battery; an inverting unit which supplies battery power to drive a motor; a switching unit which is connected to the motor, the charging unit, and the inverting unit to be turned on/off in accordance with a switching control signal in accordance with an operation mode selection; and a controller which provides the switching control signal to the switching unit in accordance with a mode selection signal to perform the selected mode operation. | 05-05-2016 |
20160129804 | VEHICLE DRIVEN BY MOTOR AND CONTROL METHOD OF CHARGING AND DISCHARGING OF SECONDARY BATTERY PROVIDED IN VEHICLE - A vehicle driven by a motor includes: a secondary battery configured to supply an electric power to the motor; a power regeneration portion configured to supply, to the secondary battery, a regenerative electric power that is recovered at a time of braking the vehicle; a power storage amount detecting portion configured to detect a power storage amount of the secondary battery; and a controlling portion configured to control charging and discharging of the secondary battery. The controlling portion estimates a regenerative electric power, and estimates an expected power-storage increasing amount, so as to calculate a virtual power storage amount from a sum total of the expected power-storage increasing amount and an actual power storage amount. The controlling portion performs charging and discharging on the secondary battery based on the virtual power storage amount. | 05-12-2016 |
20160134218 | AUTOMATIC SUPPRESSION DEVICE FOR CYCLIC DISTURBANCE - In torque pulsation suppressing control in apparatus using battery as main power source, with feedforward table, there arises compensating table error due to voltage fluctuation by battery internal resistance, depending on load power. | 05-12-2016 |
20160134222 | Solar A/C Direct Motor Drive - An electrical device comprising: a high voltage DC power storage system; a variable frequency drive comprising DC terminals, a variable frequency inverter, and a variable drive output, wherein said high voltage DC power source is direct fed to said DC terminals; and an AC motor connected to said variable drive output. | 05-12-2016 |
20160137097 | FUEL CELL SYSTEM, FUEL CELL VEHICLE, AND METHOD OF CONTROLLING FUEL CELL SYSTEM - A fuel cell system to be installed on a vehicle includes a fuel cell, a secondary battery, an SOC detector that detects a temperature and a state of charge of the secondary battery, an accelerator position detector that detects an accelerator depressed amount, and a controller that controls power to be generated by the fuel cell. The controller includes: a required generation power calculator that calculates required generation power based on the accelerator depressed amount and the temperature and the state of charge of the secondary battery; and a maximum required power calculator that calculates maximum required power based on the accelerator depressed amount and the temperature and the state of charge of the secondary battery. The maximum required power includes allowable charging power correlated with a maximum value of charging power. If determining that a condition for rapid reduction in consumption power of a motor is satisfied, the controller sets the allowable charging power to zero and calculates the maximum required power. If the required generation power exceeds the maximum required power, the controller makes the fuel cell generate power responsive to the maximum required power. | 05-19-2016 |
20160141912 | SYSTEM FOR WATER SUPPLY USING SUNLIGHT - The claimed water supply system using sunlight has a technical effect of improving the energy efficiency by having a saving unit storing current that was generated by solar cells but was left over after running a motor so as to use the stored current later. | 05-19-2016 |
20160159244 | PROPELLING SYSTEM AND ENERGY MANAGEMENT SYSTEM AND METHODS - An energy management system comprises a first electricity transformer with one or more first leg circuit(s), a second electricity transformer with one or more second leg circuit(s), and a control device. One or more first leg circuit(s) is (are) coupled to an energy-type supply, and one or more second leg circuit(s) is (are) coupled to a power-type supply. The control device will control the first and second electricity transformers operating under at least one of two conditions when a traction device is under driving mode. | 06-09-2016 |
20160164278 | ELECTRONIC APPARATUS - An electronic apparatus includes a rotating electric machine that has a plurality of multi-phase winding sets, each of which has a plurality of phase windings; a plurality of inverter circuits that are connected to the plurality of multi-phase winding sets respectively; and a control circuit that controls the plurality of inverter circuits such that a multi-phase alternating current is supplied to each of the plurality of multi-phase winding sets from each of the plurality of inverter circuits. The control circuit determines that a short circuit occurs when i) a plurality of phase current added values obtained by adding each phase current flowing through each of the plurality of phase windings calculated at each of the plurality of multi-phase winding sets; and ii) an absolute value of a total phase current added value obtained by adding all of the plurality of phase current added values is smaller than a predetermined value. | 06-09-2016 |
20160173013 | APPARATUS AND METHOD FOR CONTROLLING ELECTRIC VEHICLE | 06-16-2016 |
20160185237 | POWER CONVERSION APPARATUS AND METHOD - A power conversion apparatus and method are provided. The apparatus includes a main battery and a power converter configured to execute a high power conversion mode that generates a high power and a low power conversion mode that generates a low power using an input power from the main battery. Additionally, an auxiliary battery is configured to receive and charge the low power and an inverter is configured to convert the high power to a driving power for driving a motor. | 06-30-2016 |
20160185249 | ENERGY MANAGEMENT SYSTEM AND METHOD FOR A VEHICLE - The present invention relates to an energy management system including a motor, an inverter electrically connected to the motor, a DC-DC converter electrically connected to the inverter, a first energy storage unit electrically connected to a DC link of the inverter through the DC-DC converter, a second energy storage unit coupled to the inverter, and a control unit. The control unit is configured to control the distribution of electrical power from the first energy storage unit and the second energy storage unit to the inverter in dependence upon a predetermined power threshold. | 06-30-2016 |
20160200212 | CUSTOMER SELECTABLE POWER LIMIT FOR ELECTRIC VEHICLES | 07-14-2016 |
20160200215 | VEHICLE DRIVING SYSTEM AND ENERGY CONTROL METHODS | 07-14-2016 |
20160204597 | CURRENT SENSOR, AND POWER CONVERSION APPARATUS | 07-14-2016 |
20160204730 | ROTATING ELECTRIC MACHINE CONTROL DEVICE | 07-14-2016 |
20160254577 | COOLING CIRCUIT WITH COOLING FLUID FOR LITHIUM BATTERIES, AND A VEHICLE COMPRISING SAID COOLING CIRCUIT | 09-01-2016 |
20160380312 | ELECTRIC ENERGY STORAGE DEVICE AND METHOD FOR OPERATING AN ELECTRIC ENERGY STORAGE DEVICE - The invention relates to an energy storage device and a method for operating an energy storage device comprising a plurality of energy storage modules. In order to adjust the output voltage to the energy storage device, one or more energy storage modules is/are connected in series. According to the invention, the series-connected energy storage modules are selected in accordance with the state of charge and at least one other operating parameter in order to be able to use the individual energy storage modules in a particularly efficient manner. | 12-29-2016 |
20170232852 | METHOD OF DISCONNECTING SECONDARY BATTERY AND ELECTRIC POWER SUPPLY SYSTEM | 08-17-2017 |
20170232854 | VEHICLE INCLUDING POWER STORAGE UNIT | 08-17-2017 |
20170232856 | SPEED CONTROLLED SWITCHING SYSTEM FOR A RIDE-ON VEHICLE | 08-17-2017 |
20170232862 | ELECTRIC DRIVE SYSTEM AND METHOD FOR OPERATING AN ELECTRIC MACHINE FOR AN ELECTRIC VEHICLE | 08-17-2017 |
20180026009 | POWER MODULE, ELECTRICAL POWER CONVERSION DEVICE, AND DRIVING DEVICE FOR VEHICLE | 01-25-2018 |
20180026567 | CURRENT CONVERSION METHOD AND DEVICE AND VEHICLE COMPRISING SUCH A DEVICE | 01-25-2018 |
20190143495 | ADAPTER FOR POWER TOOL DEVICES | 05-16-2019 |
20190149072 | MOTOR CONTROLLER | 05-16-2019 |
20190149145 | VARIABLE RESISTANCE POWER SWITCH FEEDBACK | 05-16-2019 |
20220140633 | Power Tool - A power tool has a housing and a control assembly. The control assembly is disposed within the housing and has a switch, and a controlling circuit board. The switch has a length and a width. The length is defined along the housing. The width is defined along a radial direction of the housing and is smaller than the length of the switch to form two convection passages between the switch and the housing. The two convection passages are formed between the switch and the housing to facilitate ventilation inside the power tool and promote heat-dissipation efficiency of the power tool. | 05-05-2022 |