Entries |
Document | Title | Date |
20080303487 | Battery Protection Method and Structure Therefor - In one embodiment, a circuit is formed to couple a battery to a charging voltage at least a portion of a time when the charging voltage is greater than zero volts and is less than a first voltage value. The circuit is also formed to decouple the battery from the charging voltage approximately when the charging voltage is greater than the first voltage and also approximately when the charging voltage is no greater than zero volts. | 12-11-2008 |
20090015210 | Non-contact electric power transmission apparatus - The object is to provide a safe non-contact electric power transmission apparatus reducing unnecessarily consumed electric power, while intermittently-operated or otherwise restrained electric power transmission is not performed, and heat is not generated when a metal such as a foreign object is placed. In a non-contact electric power transmission apparatus having: a power supplying unit | 01-15-2009 |
20090051328 | BATTERY CHARGING APPARATUS - The battery charging apparatus is made with small and low-cost components. It includes a first transistor (T | 02-26-2009 |
20090091300 | Collapsing Adaptor Battery Charger - A method and apparatus is disclosed to charge a battery. A wall adapter may provide a power to a battery charger in a collapsed mode of operation. In the collapsed mode of operation, the wall adapter may provide the battery charger with a collapsed power. The battery charger may provide a charging current and/or voltage in a constant current charge mode of operation and/or a constant voltage charge mode of operation using the collapsed power. When operating in the constant current charge mode of operation, the battery charger provides the charging current and/or voltage having a constant current until the voltage of the battery is less than or substantially equal to a constant charge voltage. Alternatively, when operating in the constant voltage charge mode of operation, the battery provides the charging current and/or voltage having a constant voltage until the voltage of the battery is less than or substantially equal to a float voltage. | 04-09-2009 |
20090096429 | Control Unit For Triggering a Personal Protection Arrangement - A control unit for triggering the personal protection arrangement, including a first semiconductor module that is configured to make available various supply voltages and to charge an energy reserve, and including at least one second semiconductor module that is likewise configured to charge the energy reserve, the first and the second semiconductor module each having a semiconductor support. | 04-16-2009 |
20090102432 | BATTERY CHARGER - An exemplary battery charger includes an input interface arranged to connect to a DC power source, having a positive terminal and a negative terminal; an output interface arranged to connect to a battery, having a positive terminal and a negative terminal; a switch circuit connected between the positive terminals of the input interface and the output interface, comprising a control terminal; a detecting resistor connected between the negative terminals of the input interface and the output interface; a detecting circuit connected between the negative terminals of the input interface and the output interface to detect a voltage across the detecting resistor and output a digital signal; and a processor receiving the voltage signal to determine whether the battery is fully charged and generate a voltage signal to the control terminal of the switch circuit via an inverting circuit for turning off the switch circuit when the battery is fully charged. | 04-23-2009 |
20090174371 | CHARGING CONTROL DEVICE FOR VEHICLE USE - A charging control device includes a control unit and a switching circuit. The control unit has an input end connected to a vehicle battery for receiving a battery voltage signal therefrom. The switching circuit includes at least two switch units, each of which is connected between an alternator and the vehicle battery and includes a conducting unit. The conducting unit includes a silicon controlled rectifier (SCR) connected to the control unit and the alternator. The control unit controls the SCR of each switch unit to switch from a non-conducting state to a conducting state with reference to the battery voltage signal such that each switch unit permits supply of electricity from the alternator to the vehicle battery when the battery voltage signal is lower than a predetermined threshold, and interrupts supply of the electricity from the alternator to the vehicle battery when otherwise. | 07-09-2009 |
20090189572 | Charge control circuit, charging device, and connection checking method - Electrical connection between a charging device and a secondary battery is checked during a wait time in which a charge mode of the charging device is selected. When the electrical connection is not successfully established, a charge current is not supplied from the charging device to the secondary battery. | 07-30-2009 |
20090256529 | BATTERY CHARGING CONTROL CIRCUIT - The present disclosure provides a battery charging control circuit. The charging control circuit includes: a constant-current charging unit and a trickle charging unit. The charging control circuit further includes a branch switch, a control unit, and a detection unit. The branch switch is connected between a power source and the rechargeable battery for enabling or disabling the constant-current charging unit. The control unit is between the constant-current charging unit and the branch switch for controlling the branch switch. The detection unit is used to detect a state of the rechargeable battery. If the detection unit detects the state of the rechargeable battery is correspond to a predetermined state, then the control unit controls the branch switch to disable the constant-current charging unit and enable the trickle charging unit. | 10-15-2009 |
20090278509 | BATTERY CHARGING AND ISOLATION SYSTEM FOR GAS ENGINE - A control system is adapted to control an internal combustion engine, which has a battery for electric start operation and a mechanical starter for manual start operation. The control system includes a transformer configured to generate a high voltage output for providing a spark, and a power regulation circuit having an input adapted to receive the high voltage output and generate a low voltage supply. A battery charging circuit includes a switching element adapted to receive the low voltage supply and operatively couple the low voltage supply to the battery to charge the battery. The battery charging circuit includes a disconnecting circuitry diode operatively coupled to the switching element so that if a voltage level of the battery falls below a predetermined value, the disconnecting circuitry diode turns off the transistor to electrically disconnect the battery from the low voltage supply and disable the electric start operation. The mechanical starter is configured to start the engine if the battery is insufficiently charged to drive the electric motor to start the engine. | 11-12-2009 |
20090289605 | CHARGE-CONTROLLING SEMICONDUCTOR INTEGRATED CIRCUIT AND CHARGING APPARATUS - Disclosed a charge-controlling semiconductor integrated circuit comprising: a current-controlling MOS transistor connected between a voltage input terminal and an output terminal and controls flowing current; a substratum voltage switching circuit connected between the voltage input/output terminal and a substratum to which an input/output voltage is applied; and a voltage comparison circuit to compare the input/output voltage, wherein the charge-controlling semiconductor integrated circuit controls the substratum voltage switching circuit based on an output of the voltage comparison circuit, the voltage comparison circuit includes an intentional offset in a first potential direction, and in a preceding stage of a first input terminal of the voltage comparison circuit, a level shift circuit to shift the output voltage to an opposite potential direction is provided, and to a second input terminal of the voltage comparison circuit, the input voltage is input. | 11-26-2009 |
20100033139 | POWER ADAPTER FOR BATTERY CHARGER AND METHOD THEREOF - A power adapter includes a charging unit configured to charge a rechargeable battery, a sensing unit configured to detect the voltage of the rechargeable battery, a switch unit connected between the external power source and the charging unit, and a control unit. The control unit is configured to compare the detected voltage with a fully-charged reference voltage which is provided for indicating the rechargeable battery is fully-charged during the charging process, and control the switch unit to turn on if the detected voltage is lower than the fully-charged reference voltage and control the switch unit to turn off if the detected voltage is equal to or higher than the fully-charged reference voltage. When the switch unit is turned on, the charging unit charges the rechargeable battery. When the switch unit is turned off, the charging unit stops charging the rechargeable battery. | 02-11-2010 |
20100052624 | BATTERY CHARGING SYSTEMS WITH CONTROLLABLE CHARGING CURRENTS - A charging path includes a charging switch for transferring a charging current from an input terminal to an output terminal. The charging path further includes a first enable terminal coupled to the charging switch. The first enable terminal receives a first enable signal to control the charging switch to operate in either a first mode, a second mode, or a third mode, based on a status of the output terminal. More specifically, in the first mode, the charging switch is fully turned off. In the second mode, an equivalent resistance of the charging switch is determined by a control terminal of the charging switch. In the third mode, the charging switch is turned off. | 03-04-2010 |
20100127670 | BATTERY CHARGING SYSTEM HAVING HIGH CHARGE RATE - A charger including a regulator, a controller and a compensation-adjusting unit for accurately charging to a battery device is provided. The regulator provides a charging current to the battery device. The controller is coupled to the regulator for controlling the charging current. The compensation-adjusting unit is coupled to the regulator and the battery device for receiving a first reference voltage. In a first operation mode, the compensation-adjusting unit outputs the first reference voltage to the regulator. In a second operation mode, the controller instructs the regulator to transiently generate a first charging current and a second charging current. Responsive to the first and the second charging currents, the output voltage of the battery device presents a first output voltage and a second output voltage. The compensation-adjusting unit pre-estimates a parasitic resistance of the battery device by detecting the first and the second output voltage, thus compensating the first reference voltage. | 05-27-2010 |
20100171468 | CHARGER PROTECTION CIRCUITRY - The present invention provides charger protection circuitry for a rechargeable battery, and a method of protecting a charger cable during charging of a rechargeable battery. A switch controller is used to turn a switch element on and off in dependence on a direction of current flow through the charger protection circuitry during charging and otherwise. If current is flowing in the first direction the switch controller turns on the switch element such that the auxiliary current tripping element is bypassed, whereby the main current tripping element controls interruption of current flow. If instead current is flowing in a second direction opposite to the first direction, the switch controller turns off the switch element, whereby the auxiliary current tripping element is connected into the current flow path to control interruption of current flow. | 07-08-2010 |
20100171469 | Charging Circuit Having Smooth Charging Transition Mode - A charging circuit includes a current mirror block configured to charge a load in response to a control voltage applied thereto, and a charge controller configured to generate the control voltage in response to comparison result values obtained by comparing a current sensing value and a voltage sensing value of the current mirror block with respective reference values. The comparison result value are applied to the gates of MOS transistors connected in series. The charge controller is configured to switch a charge mode from a constant current charge mode to a constant voltage charge mode when the charge state of the load reaches a predetermined state. | 07-08-2010 |
20100181968 | BATTERY CHARGER WITH OVERVOLTAGE PROTECTION CIRCUITRY - A battery charger with an overvoltage protection circuitry is electrically coupled to a power source and a battery. The battery charger with the overvoltage protection circuitry includes a switching circuit. The switching circuit comprises a first switching element, a second switching element, a Zener diode, and a resistor. The first switching element includes a first terminal coupled to the power source, a control terminal, and a second terminal coupled to the battery. The second switching element includes a first terminal coupled to the control terminal of the first switching element, a control terminal, and a second terminal coupled to the first terminal of the first switching element. The Zener diode includes a cathode coupled to the control terminal of the second switching element and an anode grounded. The resistor includes a first terminal coupled to the control terminal of the first switching element and a second terminal grounded. | 07-22-2010 |
20100194354 | CHARGING MONITOR - A charging monitor has: a switch that is disposed between a load section having a storage battery and an external AC power supply supplying a current to the load section via a plurality of lines and interrupts the supply of the current from the external AC power supply to the load section; a current detection circuit that outputs a detection signal corresponding to a difference in level between currents flowing through the lines; a suppression circuit that suppresses a DC component contained in the detection signal; a filter circuit that filters a plurality of frequency components contained in the detection signal so that attenuation increases as a frequency becomes high; a rectifier smoothing circuit that rectifies and smoothens an output signal obtained when the detection signal passes through the filter circuit and the suppression circuit; and an electric leakage determination circuit that detects an electric leakage and shuts off the switch when the level of the signal smoothened by the rectifier smoothing circuit exceeds a preset reference level. | 08-05-2010 |
20100231178 | POWER SUPPLY DEVICE - The power supply device contains a first auxiliary device and a first rectifier connected to a DC voltage source; a second auxiliary device that receives electric power via the first rectifier; a first DC/DC converter that uses the DC voltage source as an input source; an electricity storage device connected to an output terminal of the first DC/DC converter; and second DC/DC having an output terminal connected to the first rectifier, which uses the electricity storage device as an input source. When the DC voltage source has output voltage higher than a predetermined value, electric power is fed from the DC voltage source to the second auxiliary device and the electricity storage device is put on charge by the first DC/DC converter. When the output voltage gets lower than the predetermined value, the second DC/DC converter starts to operate, preventing decrease in voltage to be applied to the second auxiliary device. | 09-16-2010 |
20100244784 | BATTERY CHARGING SYSTEMS - A circuit for charging a battery may include a switch operable for conducting a current flowing through the switch, and a first amplifier coupled to the switch and operable for adjusting the current according to an amount of power dissipation associated with the switch. | 09-30-2010 |
20100277132 | DC-DC CONVERTER - A DC-DC converter includes an inductor, a capacitor, an output voltage detection circuit, and a synchronous rectification circuit including a rectifier-side synchronous rectifier element and a commutator-side synchronous rectifier element. The commutator-side synchronous rectifier element is turned on so as to pass a current through a closed loop composed of the commutator-side synchronous rectifier element, the inductor, and a second secondary battery. The characteristic evaluation of the second secondary battery is performed on the basis of the decrease in a detection voltage Vout of an output voltage Vo. As a result, it is possible to determine the effective capacity or characteristic degradation state of the second secondary battery with a circuit to charge the second secondary battery without using a dedicated circuit. | 11-04-2010 |
20100295515 | Integrated PMOS Transistor and Schottky Diode and Charging Switch Circuit Employing The Integrated Device - The present invention discloses an integrated PMOS transistor and Schottky diode, comprising a PMOS transistor which includes a gate, a source, a drain and a channel region between the source and drain, wherein the source, drain and channel region are formed in a substrate, and a parasitic diode is formed between the drain and the channel region; and a Schottky diode formed in the substrate and connected in reverse series with the parasitic diode, the Schottky diode having one end connected with the parasitic diode and the other end connected with the source. | 11-25-2010 |
20100308776 | BATTERY CHARGER - A charger for lithium battery pack has a voltage input terminal, a current control module and a voltage output terminal including a voltage-rising module and a voltage-detecting module connected with the voltage-rising module and the voltage input terminal. | 12-09-2010 |
20110012565 | CHARGING CIRCUIT WITH APPLICATION SYSTEM THEREOF - A charging circuit with an application system thereof provides an error amplifier to control a transistor switch for controlling the charging power source to charges the battery. When the voltage difference between the power source and load terminals of the transistor switch drops along with the transistor switch being turned on, the output voltage of the error amplifier changes as well to increase the turning-on resistance of the transistor switch such that the voltage difference between the power source and load terminals is capable of maintaining at a value above a certain reference level for avoiding the unstable state resulting from the charging circuit being turned on and off frequently. | 01-20-2011 |
20110025277 | SWITCHING BATTERY CHARGING SYSTEMS AND METHODS - Embodiments of the present invention include techniques for charging a battery using a switching regulator. Some embodiments include programmable switching battery chargers that can be configured using digital techniques. Other embodiments include switching battery chargers that modify the battery current based on sensed circuit conditions such as battery voltage or input current to the switching regulator. In one embodiment, the present invention includes a USB battery charger. | 02-03-2011 |
20110068750 | UNIVERSAL SERIAL BUS BATTERY - A universal serial bus battery includes a universal serial bus interface, a battery, a charger, a comparator, a first switch, and a second switch. The comparator is configured for comparing the voltage at the universal serial bus interface and the voltage of the battery, and to produce an ON signal when the voltage at the serial bus interface exceeds the voltage of the battery, or to produce an OFF signal otherwise. The first switch is configured for establishing an electrical connection between the USB interface and the charger upon receiving the ON signal or cutting off the connection upon receiving the OFF signal. The second switch is configured for establishing a connection between the universal serial bus interface and the battery when the connection between the USB interface and the charger is terminated by the first switch. | 03-24-2011 |
20110089908 | CIRCUITRY FOR BALANCING CHARGING OF SERIES CONNECTED BATTERY CELLS - For a circuit for preventing overcharging of a battery cell, the overcharging protecting circuit having a voltage detector for monitoring the voltage across the battery cell, a polarity protection circuit for protecting the voltage detector from a reverse polarity connection of the battery cell to the voltage detector is disclosed. The polarity protection circuit comprises a semiconductor device coupled across voltage detection inputs of the voltage detector. The semiconductor device is adapted to shunt current across the voltage detection inputs of the voltage detector when the battery cell is connected in reverse polarity to the voltage detector. | 04-21-2011 |
20110127971 | CHARGING CIRCUIT - A charging circuit integrated into a chip, comprising a charging unit, a switch unit, a biasing unit, a voltage-dividing unit, and a comparing unit. The charging unit is connected between a power supply input and a load for outputting a constant current based on a constant bias voltage supplied by the power supply input in order to charge the load. The switch unit is connected between the charging unit and the power supply input for turning on or cutting off the charging unit. The voltage-dividing unit generates a first signal to the comparing unit according to a voltage of the load. The biasing unit outputs a second signal having a constant voltage to the comparing unit. The comparing unit compares the first signal with the second signal for cutting off or turning on the switch unit, bringing the charging unit to charge or stop charging the load, respectively. | 06-02-2011 |
20110133702 | CIRCUIT AND METHOD OF OPERATION FOR AN ELECTRICAL POWER SUPPLY - A battery charging circuit comprising: a semiconductor switch having an output connected to a rechargeable battery; a battery charge controller for receiving power from an external source, and supplying output power to a portable device and the input of the semiconductor switch, the current output of the battery charge controller being controllable; and a voltage sensing circuit for: measuring the voltage drop across the battery charge controller; and responding to the voltage drop across the battery charge controller by modulating the semiconductor switch to reduce the quantity of current supplied to the rechargeable battery when the voltage drop is too great; whereby the total power dissipated by the battery charge controller is controlled, the portable device receiving the power it needs to operate and the rechargeable battery receiving any additional available power. | 06-09-2011 |
20110163728 | POWER MANAGEMENT CIRCUIT OF RECHARGEABLE BATTERY STACK - A system includes a sensing module and a switching module. The sensing module is configured to sense output voltages of first and second cells connected in series in a rechargeable battery stack. The switching module is configured to alternately connect a capacitance across the first cell and the second cell at a switching frequency when a difference in the output voltages is greater than or equal to a first threshold. The switching module is further configured to stop alternately connecting the capacitance when the difference is less than or equal to a second threshold, wherein the first threshold is greater than the second threshold. | 07-07-2011 |
20110175577 | POWER CONVERTER - A power conversion controller includes: a correction-value calculating unit that calculates a correction value DE | 07-21-2011 |
20110193532 | CONTROL DEVICE AND METHOD FOR CHARGE CONTROL - A device controls charging a battery with power supplied from a power supply located outside of a vehicle through a charge cable. The device includes a first microcomputer and a second microcomputer. The first microcomputer is configured to turn on a charge mode signal upon detecting a change in a pilot signal output through the charge cable, and to turn off the charge mode signal when a charge completion signal output from the second microcomputer is turned off. The second microcomputer is configured to charge the battery through the charge cable when the charge mode signal is turned on, and to turn off the charge completion signal when the charging is complete. When the charge completion signal is turned on at the time of the first microcomputer turning off the charge mode signal due to sudden fluctuations, the charge mode signal is turned on again. | 08-11-2011 |
20110204854 | APPARATUS FOR TRANSFERRING ENERGY USING ONBOARD POWER ELECTRONICS AND METHOD OF MANUFACTURING SAME - An apparatus comprises a first energy storage device configured to output a DC voltage, a first bi-directional voltage modification assembly coupled to the first energy storage device, and a charge bus coupled to the first energy storage device and to the first bi-directional voltage modification assembly. The apparatus also comprises high-impedance voltage source coupleable to the charge bus and a controller configured to monitor a transfer of charging energy supplied from the high-impedance voltage source to the first energy storage device. The controller is also configured to compare the monitored transfer of charging energy with a threshold value and, after the threshold value has been crossed, control the first bi-directional voltage modification assembly to modify one of a voltage and a current of the charging energy supplied to the first energy storage device. | 08-25-2011 |
20110227543 | Converter and method for extracting maximum power from piezo vibration harvester | 09-22-2011 |
20110241628 | POWER MANAGEMENT UNIT FOR PORTABLE ELECTRONIC DEVICES - A power management unit (PMU) for supplying electrical energy to a circuitry of a portable electronic device includes a power supply module, a power detection module connected to the power supply module, and a power control module connected to the power detection module and the circuitry. The power supply module includes a battery, a charge controller, and an adapter. The power detection includes a detection resistor connected to the battery, the charge controller, and the adapter. The battery or the adapter provides electrical energy to the circuitry. The adapter further charges the battery to charge the battery when it is used to provide electrical energy to the circuitry. The charge controller detects the current for charging the battery via the detection resistor, and regulates the current for charging the battery when the charging current exceeds a predetermined value. | 10-06-2011 |
20110267010 | BATTERY CHARGING APPARATUS - The battery charging apparatus is made with small and low-cost components. It includes a first transistor (T | 11-03-2011 |
20110273145 | CHARGE CONTROL CIRCUIT - A challenge to be met by an aspect of the present invention is to provide a charge control circuit that prevents occurrence of a decrease in battery capacity even when a battery stays in a connection with an external power supply and that induces neither battery deterioration nor overcharge. A first switch ( | 11-10-2011 |
20110309802 | CLOSED LOOP CHARGER FOR LEAD-ACID BATTERIES - Embodiments of apparatus and methods for charging a battery are disclosed. The apparatus may comprise a connector configured to electrically couple to a battery, an adjustable current source capable of supplying current to the connector at a plurality of charge rates, and a resistor network configured to bias the adjustable current source to supply current at one of the plurality of charge rates in response to a digital input signal. The method may comprise receiving a digital input signal having a plurality of bits, the digital input signal indicating a desired charge rate for the battery, configuring a resistor network in response to the digital input signal, biasing an adjustable current source using the configured resistor network, and supplying current to the battery at the desired charge rate using the adjustable current source. | 12-22-2011 |
20120043944 | METHOD AND APPARATUS FOR AVERAGE CURRENT CONTROL - A method and apparatus for controlling a converter circuit within the electrical accumulator unit based on a comparison between an actual average converter current and a desired average converter current. | 02-23-2012 |
20120081081 | SYSTEM AND METHOD FOR CONVERTING AN AC INPUT VOLTAGE TO A REGULATED OUTPUT CURRENT - A converter according to one embodiment converts an AC voltage to a regulated output current provided to a DC load of a Z-type configuration. A filter capacitor is provided to average current flowing through the load. The converter includes a rectifier network for rectifying the AC voltage and for providing a rectified voltage, and a smoothing capacitor for smoothing the rectified voltage. The converter includes a hysteretic current mode controller which controls a switching transistor based on sensed voltage and sensed current provided through an inductor coupled in series with the load. The transistor is turned on when current reaches a low valley level and is turned off when the current reaches a peak level. Operation toggles in this manner while a sensed voltage is above a predetermined level. A valley fill network may be provided to keep sensed voltage from falling below the predetermined minimum level. | 04-05-2012 |
20120112707 | POWER CONTROL MODULE FOR BATTERY PACK - A battery management system is disclosed for control of individual cells in a battery pack. The battery management system includes a cell, a micro controller, a bleed off resistor, an analog circuit which includes a powered gate. In practice the powered gate which resides in the analog circuit is smartly configured such that in the event the micro controller becomes unresponsive while the bleed off resistor is connected to a cell the powered gate will open thereby disconnecting the bleed off resistor from the cell. | 05-10-2012 |
20120206110 | REVERSE CURRENT PREVENTION CIRCUIT, CHARGING CIRCUIT INCORPORATING REVERSE CURRENT PREVENTION CIRCUIT, AND CONSTANT-VOLTAGE CIRCUIT INCORPORATING REVERSE CURRENT PREVENTION CIRCUIT - A reverse current prevention circuit, connected to an input terminal, an output terminal, and a driver transistor, including a current detection circuit to detect a current flowing through the driver transistor, and convert the detected current into a detection voltage; a proportional voltage generator to generate a proportional voltage proportional to a difference voltage between an input voltage at the input terminal and an output voltage at the output terminal; an inversely-proportional voltage generator to generate an inversely-proportional voltage inversely proportional to the difference voltage between the input voltage and the output voltage; and a comparison circuit to compares the generated voltages. When the detection voltage, the proportional voltage, and the inversely-proportional voltage are equal, the comparison circuit determines that the indication of the reverse current is detected and prevents the reverse current flowing from the output terminal to the input terminal. | 08-16-2012 |
20120206111 | SYSTEM FOR CONTROLLING CHARGING OF BATTERY AND BATTERY PACK COMPRISING THE SAME - A system for controlling charging of a battery and a battery pack including the system are disclosed. The system includes a comparison unit that compares an actual output voltage value of a charger with an expected supply voltage value of the charger, and a control unit that resets a taper current value according to the comparison result. | 08-16-2012 |
20120217936 | POWER MANAGEMENT CIRCUIT - The present invention discloses a power management circuit, including: a first voltage regulator, which converts an input voltage to an output voltage; a second voltage regulator coupled between the output voltage and a battery; and a voltage difference control circuit, which receives the output voltage and a voltage of the battery, and outputs a voltage difference control signal to control the first voltage regulator. The voltage difference control circuit includes: a battery reference voltage determination circuit, which generates a battery reference voltage related to the battery voltage, and an error amplifier, which receives the output voltage and the battery reference voltage and generates the voltage difference control signal. | 08-30-2012 |
20120306456 | CHARGING CIRCUIT - A charging circuit employed in an electronic apparatus is operable to charge a portable electronic device. The charging circuit includes a charging control microchip including two control terminals, a southbridge microchip, a logic control circuit, and a basic input/output system (BIOS). The southbridge microchip and the BIOS are both electronically connected to the logic control circuit to control the logic control circuit to set or reset voltage of the two control terminals, then the charging control microchip is switched to a charging mode or a data transmission mode according to the voltage of the two control terminals. | 12-06-2012 |
20130009608 | RECARGEABLE BATTERY UNIT AND CHARGING METHOD - The present invention relates in particular to a battery unit with at least one battery cell and a switch unit that is designed so as to alter the internal resistance of the battery unit. | 01-10-2013 |
20130113439 | Method and Device for Charging a Battery - A method for charging a battery, in particular a lithium ion battery, be performing the following: charging the battery using a constant charging current in a first phase, charging the battery using a constant charging voltage in a subsequent second phase, ending the charging as a function of a specifiable boundary value of the charging current in the second phase. In this context, the following operations are provided: comparing a guide voltage specified for setting the constant voltage to at least one stored switch-off value determined as a function of the boundary value, and ending the charging when the guide voltage reaches the switch-off value. Also described is a device for charging the battery. | 05-09-2013 |
20130176002 | CONTROL PILOT VEHICLE INTERFACE WITH NON-LOCAL RETURN TO GROUND - A vehicle interface is contemplated to be operable with an Electronic Vehicle Supply Equipment (EVSE) system and a vehicle charging system to facilitate vehicle charging related operations. The vehicle interface may include one or more switches and a charger controller configured to facilitate communications between the EVSE system and the vehicle charging system. The vehicle interface may be configured to adapted to common mode interference and other influences resulting from connections between the vehicle interface and EVSE being referenced to earth ground and connections between the vehicle interface and other vehicle electronics being reference to a vehicle chassis ground. | 07-11-2013 |
20130200858 | ELECTRONIC APPARATUS, CONTROL METHOD OF ELECTRONIC APPARATUS, AND CONTROL PROGRAM OF ELECTRONIC APPARATUS - According to one embodiment, an electronic apparatus includes: a judging section configured to judge whether a current time is in a time slot during which charging of a battery is prohibited and which is set so as to be different from a peak shift time slot; a calculating section configured to calculate an average power consumption while the electronic apparatus is powered on if the judging section judges that the current time is in the battery charging prohibition time slot; a detecting section configured to detect whether the electronic apparatus is in a power-off state or a sleep state; and a charging control section configured to control charging of the battery so that the charging is performed with power that is lower than the calculated average power consumption if the detecting section detects that the electronic apparatus is in a power-off state or a sleep state. | 08-08-2013 |
20130234675 | APPARATUS FOR TRANSFERRING ENERGY USING ONBOARD POWER ELECTRONICS AND METHOD OF MANUFACTURING SAME - An apparatus for transferring energy using onboard power electronics comprises a first energy storage device configured to output a DC voltage and a DC bus coupled to the first energy storage device, the DC bus coupleable to a high-impedance voltage source. The apparatus also comprises a braking resistor coupled to the DC bus and to a control circuit, and a controller. The controller is configured to control the control circuit to cause on the DC bus to be dissipated through the braking resistor during a regenerative braking event, cause the first energy storage device to receive a charging energy from the high-impedance voltage source through the braking resistor during a charging event, and after a threshold value has been crossed, cause the first energy storage device to receive the charging energy from the high-impedance voltage source bypassing the braking resistor during the charging event. | 09-12-2013 |
20130234676 | CHARGE INDICATOR CIRCUIT - An exemplary charge indicator circuit indicates the state of charge of a battery. The charge indicator circuit includes a connection jack, an indicator module, a voltage detection module, a charger IC, and a path connection module. The indicator module includes an indicator. The indicator is on when the battery is being charged. The voltage detection module is to output a first response signal when the connection jack is connected to the power supply. The charger IC is to manage the charging of the battery, and output a low level signal when a condition of the battery is satisfied. The path connection module is in a shunt circuit of the indicator module, and enables the shunt circuit of the indicator module to cause the indicator to be on when the voltage detection module outputs the first response signal and the charger IC outputs the low level signal. | 09-12-2013 |
20140253051 | CHARGING A BATTERY IN A PORTABLE ELECTRONIC DEVICE - A system and method are described for charging a battery in a portable electronic device wherein the battery is charged using a constant-current, constant-voltage charging process. In described embodiments, a resistance is received for a current loop that includes a charger and the battery. Then, during a constant-current charging phase, a constant current is output from the charger until an output voltage of the charger reaches a target voltage. The target voltage includes a battery target voltage and a compensation voltage based on the received resistance and a charging current. When the output voltage of the charger reaches the target voltage, the charger switches from the constant-current phase to a constant-voltage phase. Then during the constant-voltage phase, the charger outputs the target voltage until the charging current drops below a minimum value at which time the charging process is complete. | 09-11-2014 |
20140312855 | MULTI-PURPOSE POWER MANAGEMENT CHIP AND POWER PATH CONTROL CIRCUIT - The present invention discloses a multi-purpose power management chip and a power path control circuit. The multi-purpose power management chip includes: a switch circuit including at least one power transistor; a switch control circuit for generating a first switch signal to control an operation of the power transistor to thereby control the power conversion between an input terminal and an output terminal; a power path management circuit for controlling the charging operation from the output terminal to the battery; a current source for supplying a current to the battery; and a path selection circuit for determining whether the charging operation to the battery is controlled by the power path management circuit and the current source or not according to whether a power path power transistor is provided on the power path or not. | 10-23-2014 |
20140375280 | METHOD FOR CHARGING BATTERY AND ELECTRONIC DEVICE THEREOF - An apparatus and a method for charging a battery in an electronic device are provided. The method includes, when charging power of a first level is supplied from a charger, converting the charging power of the first level to a charging power of a second level before providing charging power to a charging circuit, providing the charging power of the second level to the charging circuit, wherein the charging power of the first level is greater than the charging power of the second level. | 12-25-2014 |
20150035497 | Voltage Regulator - Provided are improvements for systems and methods of alternating current (AC) to direct current (DC) power regulation. The system improvements include a regulation circuit that controls a silicon controlled rectifier circuit. Method improvements include one or more of SCR load sharing, adaptive voltage droop compensation, and/or voltage rebound compensation. | 02-05-2015 |
20150357856 | ELECTRICITY STORAGE SYSTEM - [Problem] To provide a configuration for cutting off energization of an electricity storage block without interposing a controller. | 12-10-2015 |
20160056646 | OVERCHARGE PROTECTION APPARATUS WITH MINIMIZED POWER CONSUMPTION - Disclosed herein is an overcharge protection apparatus with minimized power consumption. An overcharge protection apparatus with minimized power consumption according to an embodiment includes a switching unit for controlling supply of voltage detected in a battery cell depending on an ignition-on or off state of a vehicle, and an overcharge prevention circuit for when the battery cell is overcharged based on the voltage of the battery cell output from the switching unit, turning off a main relay, thus interrupting supply of power to a battery module, so that the voltage of the battery cell is detected only in an ignition-on state of a vehicle and power consumption is Minimized, thus preventing the lifespan of a battery from being shortened by reducing a voltage difference between cells. | 02-25-2016 |