| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 320132000 | With state-of-charge detection | 68 |
| 20080197807 | Method of determining the energy capacity of a battery - A method of determining the available energy of a battery provides for measuring first and second open circuit voltage of the battery with a change of energy level occurring therebetween. The two open circuit voltages are correlated to a state of charge level and the measured amount of change of energy is divided by the change of the state of charge. | 08-21-2008 |
| 20080211458 | CHARGING DISPLAY SYSTEM - In one aspect, a method is provided for operating a charging display system that is capable of wirelessly charging a rechargeable device positioned on a connector-less charging surface. In accordance with the method, the presence of a chargeable device on the charging surface is detected and the type of the chargeable device is identified. A set of interaction options based upon the identity of the chargeable device with the set, including a charging interaction option, is determined and, a displayable output signal based upon the determined set interaction options is generated. The set of interaction options is initiated based upon the detected presence of the chargeable device on the charging surface and the identified device type and, the output signal is presented on a display of the charging device. | 09-04-2008 |
| 20080218125 | Battery Charging System - A method and system are provided in which a charging process for rechargeable batteries is controlled in accordance with a recommended inactive or storage maximum battery charge level which is obtained from a battery manufacturer or other data source. In one embodiment, the battery charging system accesses a battery manufacturer's website in order to determine the manufacturer's recommended charging characteristics, including a maximum battery charge level for an inactive or storage status, for the particular battery being charged. When connected to a power source, the battery being charged is not permitted to be charged to a fully charged state but rather charged only to the lower storage charge level in order to increase the life span of the battery. | 09-11-2008 |
| 20080218126 | Conditional Battery Charging System - A method and system are provided in which a charging process for rechargeable batteries is controlled in accordance with selected predetermined variable conditions. In an exemplary embodiment, a user is enabled to select the predetermined conditions under which the charging of a battery is suspended until such conditions have changed. Such conditions include, for example, physical location of the battery being charged and/or the time and/or date when the battery is being charged. A user GUI is provided to enable a user to input selected times and/or dates and/or locations when the device containing the battery is likely to be away from a charging source and needs to be fully charged, and/or selected times and/or dates and/or locations when the device is likely to have access to a power source and the battery is enabled to be charged only to a storage level. | 09-11-2008 |
| 20080224663 | METHOD AND APPARATUS TO CONTROL ELECTRIC POWER CONSUMPTION - A system and method for controlling the electrical power consumption of an accessory device. A power transmission unit is adapted to generate electrical power. The system comprises a first controller, a current sensor and a second controller. The first controller is adapted to control the operation of the accessory device. The current sensor is configured to measure an amount of current being charged and discharged to and from the battery and generate a signal that corresponds to the measured amount of current charged and discharged to and from the battery. The second controller is configured to receive the signal from the current sensor and generate flag signal in response to detecting that current is being charged to the battery. The first controller is further adapted to control the accessory device to consume increased power from the electrical power generated by the power transmission unit in response to the flag signal. | 09-18-2008 |
| 20080258685 | BATTERY DISCHARGE CURRENT SHARING IN A TIGHTLY REGULATED POWER SYSTEM - In a high power system, plural batteries provide back-up power when primary power is unavailable. Each battery has an associated discharge controller which is controlled by a local bus control amplifier which regulates the power bus voltage set-point lower than the main bus voltage set-point. A single main bus control amplifier tightly regulates the power bus to a main bus voltage set-point and controls charging and discharging of all batteries to prevent charging of one battery at the expense (discharge) of another battery. There is one master battery discharge controller, with the remaining controllers being slave units. A local bus voltage set-point of each slave unit varies under the control of a slave unit current sharing amplifier which compares its own discharge current to the average discharge current, and an error signal modifies the reference voltage in the local bus control amplifier to allow equal discharge current from all batteries. | 10-23-2008 |
| 20080265840 | METHOD FOR DETERMINING RESIDUAL BATTERY CHARGE - A method is provided for determining a residual charge on a battery ( | 10-30-2008 |
| 20080265841 | Method of testing cycle life of lithium rechargeable battery - The provided are two test methods for the cycle life test of a lithium rechargeable battery, which measures charge/discharge capacity by repeating charging and discharging lithium rechargeable battery. In one method, a constant current-constant voltage of charge rate of 1.5C and 4.2V, and a cut-off current of 0.1C are set to charge the battery, and a discharge rate of 1.0C and a cut-off voltage of 3.0V are set to discharge the battery, and there is no rest period between the charging and discharging. In another method, a constant current-constant voltage charge condition of charge rate of 1.0C and 4.2V, and a cut-off current of 0.1C are set to charge the battery, and a discharge rate of 1.3C and a cut-off voltage of 3.3V are set to discharge the battery, and there is no rest period between the charging and discharging. The present invention is appropriate to the cycle life test method of 500 cycles. | 10-30-2008 |
| 20090009133 | Battery state monitoring circuit and battery apparatus - Provided is a battery state monitoring circuit which is capable of preventing a discharge leak current from a battery so as to eliminate a load conventionally imposed on a user, including: a battery state detector circuit that detects a state of the battery based on a voltage of the battery; a transmitting terminal that transmits battery state information indicative of the state of the battery to an outside; a receiving terminal that receives battery state information of another battery from the outside; a transistor that is used for transmitting the battery state information, and has any one of two terminals except for a control terminal connected to the transmitting terminal; and a diode that is connected in a direction opposite to a direction of a parasitic diode disposed between the two terminals of the transistor, the diode being disposed between the transmitting terminal and one terminal of the transistor. | 01-08-2009 |
| 20090015202 | STATE OF CHARGE CONTROL METHOD AND SYSTEMS FOR VEHICLES - State of charge control for electric and hybrid vehicles. In one embodiment, a battery may be electrically connected to an electric motor to propel a vehicle. In such an embodiment, during vehicle operation a state of charge of the battery may fluctuate within a given state of charge range and may be regulated to a target state of charge. Such target state of charge may be set below the midpoint of the state of charge range. As the vehicle operates various devices may be controlled to regulate the state of charge to the target. In particular, an electric motor may be employed to lower the state of charge and an internal combustion engine may be employed to raise the state of charge. In other embodiments, regenerative braking, solar power or the like may be employed to raise the state of charge from at or below the target state of charge to the upper state of charge limit. | 01-15-2009 |
| 20090015203 | System and method for controlling vehicle idling and maintaining vehicle electrical system integrity - A battery charge maintenance system for a vehicle is provided. | 01-15-2009 |
| 20090051321 | APPARATUS FOR ESTIMATING STATE OF CHARGE OF SECONDARY BATTERY - An apparatus for estimating a state of charge (SOC) of a secondary battery. A control section of a battery controller (ECU) computes a total amount of electric discharge of a secondary battery and compares the total amount of electric discharge with a predetermined threshold value. The threshold value is set so as to fall within a range of; for instance, 400 Ah to 1600 Ah. When the total amount of electric discharge is equal to or greater than the predetermined threshold value, an open-circuit-voltage (OCV)-SOC map is replaced with a map achieved in a state where a memory effect is saturated. When the total amount of electric discharge is smaller than the predetermined threshold value, a correction is made to the map so as to achieve a map that is a mixture consisting of the OCV-SOC map achieved in an initial state and the OCV-SOC map achieved in the saturated state at a predetermined ratio. The SOC is estimated by use of the corrected map. | 02-26-2009 |
| 20090085517 | Method and apparatus of charge management for battery in mobile terminal - The present invention provides a charge management method for a battery in a mobile terminal having the steps of: setting an initial charge start point; setting a statistic analysis interval for gathering the remaining capacity of the battery at time of start and creating a statistic array for recording the remaining capacity of the battery upon each power-on operation in the statistic analysis interval; reading current remaining capacity of the battery and storing it sequentially in the statistic array; calculating a new charge start point based on a predetermined adaptive algorithm; and updating the initial charge start point with the new charge start point. The present invention also provides a charge management apparatus for a battery in a mobile terminal. With the present invention, it is possible to set an optimal charge start point through measurements, and thus lengthen the battery's lifetime. Especially for users who rarely use a battery to supply power, the battery's lifetime can be considerably extended in a smart way, and the safety of use of battery is improved. | 04-02-2009 |
| 20090128093 | Accumulator And Combination Of Accumulator With Device - The invention discloses an accumulator/device combination and an accumulator. In the case of the combination, the unit is connected to the accumulator via at least one current supply line. A device operating switch is arranged in the device. A monitoring unit is arranged in the accumulator. The monitoring unit comprises electronic circuit for detecting an alarm condition in the accumulator. The electronic circuit are interactively connected with the operating switch. | 05-21-2009 |
| 20090256524 | METHOD FOR DETECTING OF BATTERY CONDITION - PROBLEM TO BE SOLVED: To provide a method for detecting a charged state of a battery, for evaluating a deterioration thereof due to each of reaction processes that individually have rates of reactions as different from therebetween, and for performing a detection of the charged state of the battery. | 10-15-2009 |
| 20090273312 | System and Method for Reliable Information Handling System and Battery Communication - Communication between an information handling system and battery has improved reliability by repeated communications of information from the battery using different commands from the information handling system. A battery management unit responds to a first command from an information handling system by sending information stored at a first address associated with the command and then saving the first address at second address. A power manager of the information handling system sends a second command having the second address to the battery management unit. The battery management unit responds to the second command by retrieving the first address stored at the second address, retrieving information stored at the first address and sending the information to the power manager. The power manager restricts operations of the battery, such as charges or discharges, unless the information received in response to the first and second commands matches. | 11-05-2009 |
| 20090278499 | METHOD AND ELECTRONIC CIRCUIT FOR EFFICIENT BATTERY WAKE UP CHARGING - A method for efficiently charging a battery. The method includes producing a first signal having a voltage level dependent on the voltage of the battery comparing the voltage level of the first signal with a settable voltage representative of a maximum battery charging current, and producing a second signal representative of a charging current to be provided to the battery, the second signal having a voltage level selected to be the lower voltage level between the first signal and the settable voltage. | 11-12-2009 |
| 20090295331 | CHARGING DEVICE - The invention provides a charging device for charging a battery. The charging device includes a measuring unit, a comparing unit and a control unit. The measuring unit is used for measuring the battery and generating a measuring value. The comparing unit is coupled to the measuring unit for comparing the measuring value with a first threshold, a second threshold and a third threshold and generating a comparing result. The control unit is coupled to the comparing unit for executing a predetermined manner according to the comparing result, wherein the predetermined manner is charging or discharging the battery. | 12-03-2009 |
| 20090295332 | BATTERY PACK AND CHARGING METHOD FOR THE SAME - A battery pack and a charging method for the same are disclosed. The battery pack automatically regulates the full-charge voltage of a battery according to deterioration of lifespan of the battery. The battery pack includes: a rechargeable battery having a positive electrode and negative electrode; a switching module having a charge switching device and discharge switching device electrically connected to a high-current path of the battery; and a battery management unit electrically connected to the switching module to control the charge switching device and discharge switching device, electrically connected to the battery to measure an open-circuit voltage and a use time of the battery, determining whether the battery is deteriorated with reference to at least one of the open-circuit voltage and the use time of the battery, and setting a full-charge voltage of the battery when the deterioration of the battery is determined. | 12-03-2009 |
| 20100001692 | CHARGE/DISCHARGE CONTROL DEVICE FOR SECONDARY BATTERY AND VEHICLE EQUIPPED WITH THE SAME - A charge/discharge control device for a secondary battery mounted on a vehicle includes a temperature sensor detecting a temperature of a battery and a control device setting a battery power charged to and discharged from the battery base on the temperature detected by the temperature sensor and the state of charge of the battery. The control device sets at least one of a first value, a second value and a third value to be increased as the battery temperature rises, the first value indicating the state of charge at the time of switching between charging and discharging of the battery, the second value indicating the state of charge at the time when the battery power charged to the battery reaches a limit value in the case where the state of charge falls below the first value, and the third value indicating the state of charge at the time when the battery power discharged from the battery reaches the limit value in the case where the state of charge exceeds the first value. | 01-07-2010 |
| 20100007309 | Method for determining the state of charge of a battery in charging or discharging phase at constant current - The method for determining the state of charge of a battery can be used during charging or discharging of the battery at constant current. It comprises placing the battery in open circuit during a recovery period until the voltage at the terminals of said battery stabilizes at a voltage plateau. Then a constant test voltage is applied to the battery terminals during a preset test period. The state of charge of the battery corresponds to the current measured at the end of the test period by means of a previously obtained calibration curve. | 01-14-2010 |
| 20100026243 | Method of controlling battery charging and discharging in a hybrid car power source - The method of controlling charging and discharging in a hybrid car power source detects remaining capacity of batteries | 02-04-2010 |
| 20100045239 | ELECTRIC-POWERED VEHICLE, METHOD FOR ESTIMATING STATE OF CHARGE, AND COMPUTER-READABLE STORAGE MEDIUM HAVING PROGRAM STORED THEREIN FOR CAUSING COMPUTER TO EXECUTE METHOD FOR ESTIMATING STATE OF CHARGE - When charging each electric power storage device from a power supply external to a vehicle is requested, then before each electric power storage device is charged the electric power storage devices charge/discharge therebetween. A battery ECU calculates a voltage-current characteristic of each electric power storage device, as based on each electric power storage device's voltage and current collected when the electric power storage devices charge/discharge therebetween. Each electric power storage device's OCV is calculated as based on the calculated voltage-current characteristic, and each electric power storage device's SOC is estimated from the calculated OCV. | 02-25-2010 |
| 20100045240 | METHOD AND APPARATUS FOR DETERMINATION OF THE STATE-OF-CHARGE (SOC) OF A RECHARGEABLE BATTERY - The present invention relates to a method for determination of the state-of-charge (SoC) of a rechargeable battery as a function of the Electro-Motive Force (EMF) prevailing in said battery. The invention also relates to a method for measuring the relation between the state-of-charge (SoC) and the EMF. The invention further relates to an apparatus for determination of the State-of-Charge (SoC) of a rechargeable battery as a function of the Electro-Motive Force (EMF) prevailing in said battery. | 02-25-2010 |
| 20100052617 | Degradation determination method for lithium-ion battery, control method for lithium-ion battery, degradation determination apparatus for lithium-ion battery, control apparatus for lithium-ion battery, and vehicle - A degradation state of a lithium-ion battery is determined on the basis of information about a voltage change in the lithium-ion battery obtained in a diagnosis mode in which the lithium-ion battery is successively charged and discharged at a constant power value. The constant power value in the diagnosis mode preferably may vary with the power storage amount and the temperature of the lithium-ion battery. As the information, the degree of a voltage drop in the lithium-ion battery obtained during the discharge can be used. | 03-04-2010 |
| 20100085010 | Battery pack for power tool, and power tool - A battery pack for power tool includes a battery, a monitoring circuit, and a sleep mode switching unit. The battery includes at least one battery cell. The monitoring circuit is operated by receiving power supply from the battery. The sleep mode switching unit switches the battery pack to a sleep mode by stopping at least a part or all of operations of the monitoring circuit when the monitoring circuit detects a discharge end state where a discharge current from the battery is equal to or lower than a predetermined set current value, and the monitoring circuit further detects at least one of a voltage stable state where a voltage change amount in the battery cell is within a predetermined stable range of voltage change amount and a temperature stable state where a temperature change amount in the battery is within a predetermined stable range of temperature change amount. | 04-08-2010 |
| 20100085011 | METHODS AND APPARATUS FOR CHARGING A BATTERY IN A PERIPHERAL DEVICE - A power manager for managing power delivered to a battery operated peripheral device is disclosed. The power manager includes an input current limiter arranged to suppress a power surge associated with an insertion event by a power cable arranged to provide an external voltage. A voltage converter unit coupled to the input current limiter converts the received external voltage to a supply voltage that is transmitted by way of a main bus to a voltage sensor unit coupled thereto. During the insertion event, a comparator unit coupled to the voltage sensor, sends a first switching signal to a switchover circuit that responds by connecting the peripheral device and an uncharged battery to the main bus such that the supply voltage is provided thereto. When the battery is substantially fully charged, the switchover circuit responds by electrically disconnecting the battery so as to not overcharge the battery. | 04-08-2010 |
| 20100090650 | Battery State of Health Assessment System - Described herein are systems and methods for accurately characterizing thermodynamic and materials properties of electrodes and electrochemical energy storage and conversion systems. Enhanced sensitivity provided by the present methods and systems combined with measurement conditions that reflect thermodynamically stabilized electrode conditions allow very accurate measurement of thermodynamic parameters, including state functions such as the Gibbs free energy, enthalpy and entropy of electrode/electrochemical cell reactions, that enable prediction of important performance attributes of electrode materials and electrochemical systems, such as the energy, power density, current rate, the cycle life and the state of health of an electrochemical cell. Also provided are systems and methods for charging electrochemical cells; for example, systems and methods for charging an electrochemical according to its state of health. | 04-15-2010 |
| 20100090651 | METHOD AND APPARATUS FOR DETERMINING STATE OF CHARGE OF A BATTERY - A method and apparatus for determining the state of charge (SOC) of a battery is discussed. The method involves measuring the terminal voltage across the battery and the current flowing through the battery at a plurality of different times and fitting a line equation with a slope and an intercept to the terminal voltage and current data. The open-circuit voltage (OCV) is calculated from the intercept of the linear equation and the SOC is determined from the OCV by reference to a lookup table. | 04-15-2010 |
| 20100109610 | METHOD AND APPARATUS FOR MANAGING ENERGY IN PLURAL ENERGY STORAGE UNITS - A system for managing energy stored in a plurality of series connected energy storage units has a plurality of energy storage unit controllers, each controller being associated with one of the plurality of energy storage units, a balancing circuit between two of the energy storage units, the balancing circuit being controlled by at least one of the energy storage unit controllers, a serial electrical interface between the energy storage unit controllers for providing voltage isolated bi-directional communication, and a central controller in electrical communication with the energy storage unit controllers. A method for managing charge in a plurality of series connected energy storage units forming an energy storage device includes monitoring a current supplied to the energy storage device, determining at least one of a charging rate and a capacity of a first energy storage unit and a second energy storage unit in the energy storage device, and diverting current from the first energy storage unit to the second energy storage unit in response to the steps of monitoring and determining. | 05-06-2010 |
| 20100123436 | OPTIMIZED LITHIUM-ION BATTERY CHARGING - A device optimized battery-charging system for extending the useful life of a rechargeable battery. The optimized battery-charging system predicts periods of use and non-use of the device containing the battery and generates a schedule of when to charge the battery so the battery is ready for the next use cycle. During non-use cycles, the optimized battery-charging system reduces the battery charge level to an optimum level for storage based on the battery chemistry. When charging or discharging the battery, the optimized battery-charging system calculates a rate of charge or discharge that assures that the battery temperature does not exceed a preconfigured maximum value. | 05-20-2010 |
| 20100156351 | DETERIORATION DETECTING METHOD AND DETERIORATION SUPPRESSING METHOD FOR RECHARGEABLE LITHIUM BATTERIES, DETERIORATION DETECTOR, DETERIORATION SUPPRESSOR, BATTERY PACK, AND CHARGER - According to a deterioration detecting method for rechargeable lithium batteries, battery voltages of a rechargeable lithium battery before and after the completion of charging or discharging are measured. An evaluation value is calculated based on the measured battery voltages. This evaluation value is compared with a reference value of the rechargeable lithium battery stored in advance. A deterioration level of the rechargeable lithium battery is estimated based on this comparison result. In addition, further deterioration can be suppressed by controlling charging and discharging of the rechargeable lithium battery based on the estimated deterioration level. | 06-24-2010 |
| 20100201321 | BATTERY INTERNAL SHORT-CIRCUIT DETECTING DEVICE AND METHOD, BATTERY PACK, AND ELECTRONIC DEVICE SYSTEM - A battery internal short-circuit detecting device has: a battery temperature detection unit for detecting a battery temperature Tr; an ambient temperature detection unit for detecting an ambient temperature Te; an average heating value detection unit for detecting an average value Pav of battery heating values per predetermined first period ΔW | 08-12-2010 |
| 20100225277 | BATTERY CHARGE AND DISCHARGE CONTROLLER - Methods, systems, and devices are described for described for providing control circuitry for use with battery packs. Embodiments optimize charging and discharging cycles to mitigate overcharging, over-discharging, and/or overheating individual cells in a battery pack. For example, embodiments allow for full discharging of battery packs (i.e., bringing the battery pack and its individual cells closer to their minimum voltages without going below) and full charging of battery packs (i.e., charging each cell of the battery pack closer to their maximum voltages without exceeding). Further, some embodiments include a substantially lossless, bi-directional DC-to-DC converter for facilitating ultra-fast charging of battery packs (e.g., at greater than 10C charge rates) without overheating or overcharging the individual cells of the battery packs. | 09-09-2010 |
| 20100270974 | CHARGING CONTROL DEVICE AND ELECTRICITY STORAGE SYSTEM - A charging control device for an electricity storage system includes a unit to detect an electricity remaining amount of a battery, a unit to calculate a necessary charge amount, a unit to calculate a necessary charge period, and a unit to start a charging from a charger to the battery at a start timing of nighttime. The start timing is defined to go back by the necessary charge period from a target timing, when the charging is defined to be finished at the target timing. The necessary charge amount is necessary for a following daytime, and is discharged for a load in the daytime. | 10-28-2010 |
| 20100289454 | SECONDARY BATTERY REMAINING CAPACITY ESTIMATING APPARATUS - A secondary battery remaining capacity estimating apparatus basically includes a secondary battery ( | 11-18-2010 |
| 20110043169 | Charging Algorithm for Lithium Batteries - A method of developing an optimum a lithium battery charging algorithm is conducted by providing a salt dissolved in solvent permitting lithium ions to leave a cathode in large format battery cells. Charge and discharge are then measured under different C-rate conditions. Using the cathode material phase transformations to ascertain a differential curve, peaks in the differential curve are observed with all data plotted against dV/dt and V, where V represents voltage and t represents time. Areas in voltage ranges are then observed where the rate of increase is higher than in other areas. By varying the charging current, an optimum charging voltage can be ascertained and maintained. | 02-24-2011 |
| 20110057619 | METHOD OF CONTROLLING LEAD-ACID BATTERY AND POWER SUPPLY SYSTEM - An object of this invention is to simultaneously resolve a decline in capacity due to undercharging of, and degradation due to overcharging of, a lead-acid battery, which occur as a result of random charging. A method of controlling a lead-acid battery of this invention is characterized in that a first region extending until an accumulated discharged capacity D | 03-10-2011 |
| 20110068747 | CYCLIC SELF-MAINTENANCE BATTERY DEVICE - The present invention relates to a cyclic self-maintenance battery device, which describes a self-maintenance battery device that can be coupled to batteries, and the batteries are coupled to a load, The self-maintenance battery device comprises a charger module, an electric discharge module, a control module and a SOH (State of Health) indication, wherein the control module assigns the batteries to be in standby state, charging mode or discharging mode. Accordingly, the present invention can continuously charge, discharge the batteries, and thus prevent an AC (alternating current) power from continuous charging the batteries for long periods of time causing problems of battery degradation, thereby prolonging the serviceable life of the batteries, reducing the number of times the batteries need to be replaced, and further achieving the environmental protection objective. | 03-24-2011 |
| 20110089905 | POWER SUPPLY DEVICE - When a remaining capacity estimated by a calculator | 04-21-2011 |
| 20110109272 | MOBILE ELECTRONIC DEVICE AND POWER MANAGEMENT METHOD OF BATTERY MODULE THEREOF - This invention relates to a mobile electronic device and a power management method of a battery module thereof. The mobile electronic device includes a battery module, a charging/discharging module, and a control module. The charging/discharging module is coupled with the battery module. The control module is coupled with the battery module and the charging/discharging module. When the power supply is coupled with the mobile electronic device and the system time is not within a maintenance period, the control module controls the charging/discharging module to maintain capacity of the battery module within a first capacity range. When the power supply is coupled with the mobile electronic device and the system time is within the maintenance period, the control module controls the charging/discharging module to maintain the capacity of the battery module within a second capacity range. | 05-12-2011 |
| 20110109273 | AVAILABLE CHARGING / DISCHARGING CURRENT CALCULATION METHOD AND POWER SUPPLY DEVICE - A method includes steps of dividing resistance R into a physical and chemical resistances R | 05-12-2011 |
| 20110121786 | METHOD OF DETECTING CONDITION OF SECONDARY BATTERY - A method of detecting a condition of a secondary battery is provided. The method includes the steps of: measuring an entropy change at a predetermined state of charge of the secondary battery; charging the secondary battery after the step of measuring an entropy change; repeating the steps of measuring an entropy change and charging the secondary battery; and detecting a deterioration condition of the secondary battery based on the slope of a measured entropy change curve with respect to state of charge. | 05-26-2011 |
| 20110133697 | BATTERY PACK CAPABLE OF CALCULATING RELATIVE REMAINING CAPACITY - A remaining capacity calculating section is provided that acquires a discharged capacity of a rechargeable battery based on a discharging current and a discharging time of the rechargeable battery, and calculates a relative remaining capacity of the rechargeable battery based on the discharged capacity and the fully-charged capacity of the rechargeable battery. The remaining capacity calculating section employs the rating capacity of the rechargeable battery or a learned fully-charged capacity as the fully-charged capacity when a high capacity mode is selected, and employs a capacity obtained by multiplying the rating capacity or learned fully-charged capacity by a predetermined factor not more than 1 as the fully-charged capacity when a long life mode is selected. | 06-09-2011 |
| 20110156652 | STATE OF CHARGE RANGE - A management system for a battery cell pack, the management system including a controller determining an adjustable charge profile for the battery cell pack wherein the adjustable charge profile includes an operational parameter identifying a next operation drive range mode from a set of drive range modes for the battery cell pack wherein each the drive range mode includes a state of charge (SOC) window between a charge SOC and a discharge SOC, with the set of drive range modes including a first drive range mode having a first SOC window and including a second drive range mode having a second SOC window less than the first SOC window; and one or more energy transfer stages to produce the charge SOC of the next operation drive range mode in the battery cell pack. | 06-30-2011 |
| 20110215761 | METHOD FOR DETERMINING THE STATE OF CHARGE OF A BATTERY IN CHARGING OR DISCHARGING PHASE - The method for determining the state of charge of a battery includes measurement of an electric parameter of the battery during a charging or discharging phase of the battery followed by placing the battery in open circuit during a rest period. During the rest period, at least two values of the voltage at the battery terminals are measured. An indicator is then calculated according to the electric parameter and to values of the voltage measured during the rest period, and the state of charge corresponding to this indicator is then determined by means of a calibration curve representative of the variations of the indicator as a function of the state of charge of the battery. | 09-08-2011 |
| 20110234166 | BATTERY MODULE STATE DETECTION METHOD - The present invention provides a battery module state detection method. The battery module includes a battery unit and is connected to a load. The method for detecting the battery module status includes the following steps. First, measure an on-load voltage value of the battery unit and a load current value of a load. Next, calculate an instant resistance value of the battery unit according to a no-load voltage value of the battery unit, the on-load voltage value and the load current value. Finally, obtain an operating state of the battery unit according to the instant resistance and a relationship between the internal resistance and discharging time. By the method of the present invention, the user can monitor the remaining energy of the battery module accurately in real time and therefore prevent the electrical hazard caused by over-discharging the battery module. | 09-29-2011 |
| 20110234167 | Method of Predicting Remaining Capacity and Run-time of a Battery Device - Estimating remaining capacity and remaining time of a battery device during discharging of the battery device includes determining initial state of charge of the battery device, determining discharge current of the battery device, utilizing a shooting end of discharge process to determine final state of charge corresponding to the discharge current, and determining the remaining capacity and the remaining time according to the final state of charge. | 09-29-2011 |
| 20110234168 | Battery pack and method of controlling the battery pack - A battery pack includes a battery cell, a current converting unit connected between the battery cell and a load and converts a discharge current of the battery cell, and a microcomputer that determines an amount of a discharge current of the battery cell and controls the current converting unit based on the amount of the discharge current. Accordingly, a current needed for the load may be adjusted in the battery pack. | 09-29-2011 |
| 20120056591 | BATTERY CONTROL DEVICE AND BATTERY CONTROL METHOD - A power storage device has a NaS battery for storing electric power, a Hall current detector for measuring charge/discharge current value I of the NaS battery, a bidirectional converter for converting electric power between a direct current and an alternating current bidirectionally, and a controller for controlling the power storage device. The controller integrates the charge/discharge current value I of the NaS battery and calculates the calculated value of the discharge capacity in the NaS battery. The controller calculates estimated error Er(t | 03-08-2012 |
| 20120112700 | CIRCUIT FOR COUNTING NUMBER OF CYCLES, BATTERY PACK AND BATTERY SYSTEM - A circuit for counting a number of cycles, including: a current detecting portion that detects a current value of a current flowing to a secondary battery; a current integrating portion that calculates, as an integrated electric quantity, an integrated value of the current value detected by the current detecting portion; a cycle electric quantity setting portion that successively sets a cycle electric quantity corresponding to one cycle of a cycle life of the secondary battery; and a cycle counting portion that counts a number of cycles of the cycle life, wherein the cycle counting portion adds one to the last counted number of cycles when an increment of the integrated electric quantity calculated by the current integrating portion after the number of cycles is counted last time reaches a last set cycle electric quantity, and the cycle electric quantity setting portion decreases a predetermined decrement from the last set cycle electric quantity to set a new cycle electric quantity when the increment of the integrated electric quantity calculated by the current integrating portion after the number of cycles is counted last time reaches the last set cycle electric quantity. | 05-10-2012 |
| 20120133331 | METHOD FOR CHECKING AND MODULATING BATTERY CAPACITY AND POWER BASED ON DISCHARGING/CHARGING CHARACTERISTICS - A method for checking and modulating battery capacity and power based on charging/discharging characteristics is provided. In terms of discharge, a relationship between an open circuit voltage and an output electric capacity of a battery is measured to obtain a first characteristic curve. A relationship between a voltage and the output electric capacity of a battery at a predetermined maximum charge/discharge current rate is measured to obtain a second characteristic curve. A characteristic boundary line passing the first and the second characteristic points respectively selected from the first and the second characteristic curves is established. A voltage value corresponding to the first characteristic point is higher than a voltage value corresponding to the second characteristic point. The first and the second characteristic curves, and the characteristic boundary line define an operation range. The battery is charged/discharged within the operation range. | 05-31-2012 |
| 20120176091 | CONTROL APPARATUS, CONTROL APPARATUS NETWORK AND CONTROL METHOD - A first upper limit and a second upper limit of emission power are set in each of the NaS batteries. The second upper limit is maximum value of the emission power for maintaining the temperature of the NaS battery at an upper limit temperature or less. In allocation of the emission power to each of the NaS batteries, each of the NaS batteries is separated into a preferential virtual battery to which a non-excess of the emission power that does not exceed the second upper limit is allocated and non-preferential virtual battery to which an excess of the emission power that exceeds the second upper limit is allocated, and after the emission power is allocated to all the preferential virtual batteries, the emission power is allocated to each of the non-preferential virtual batteries. | 07-12-2012 |
| 20120200264 | BATTERY MANAGEMENT SYSTEM, METHOD OF REMOVING POLARIZATION VOLTAGE OF BATTERY, AND ESTIMATING STATE OF CHARGE OF BATTERY - A battery management system according to an exemplary embodiment of the present invention includes: a current measuring unit for sampling a charge current and a discharge current of a battery; a charge and discharge amount calculator for calculating a charge and discharge amount corresponding to a difference between the sampled charge current and the sampled discharge current; a polarization voltage calculator for calculating a polarization voltage corresponding to the charge and discharge amount and a temperature of the battery; and a pulse generator for applying a polarization voltage reset pulse for the battery to remove the polarization voltage. | 08-09-2012 |
| 20120268075 | Bidirectional current sense - Method and circuits for sensing a bidirectional current without requiring an external sense resistor are disclosed. In a preferred embodiment the invention is applied for fuel gauging of one or more batteries and comprises a charger/active diode, which can source current into the battery and sink current from the battery to supply a mobile electronic device. The invention can be applied to any other application requiring sensing of bidirectional currents. A regulated cascode forces a voltage drop over a power transistor and a sense transistor to be the same. A feedback current is measured by an ADC. The integration of these current measurements over time is equal to the actual charge of the battery. | 10-25-2012 |
| 20130099752 | BATTERY SYSTEM FOR PROTECTING BATTERY MANAGEMENT SYSTEM FROM ELECTROMAGNETIC WAVES - Disclosed is a system for protecting a BMS from electromagnetic waves, and more particularly, to a system for protecting a BMS from electromagnetic waves to prevent voltage sensing errors due to the electromagnetic waves generated by current from a battery cell. The system includes: a battery having a plurality of battery cells; a power relay assembly intermittently charging and discharging the battery; a battery management system (BMS) connected to the battery cell via a voltage sensing wire to predict a battery's SOC; and a housing surrounding the battery and the power relay assembly with one side of the outside of the housing having a separate section for therein for receiving the BMS so as to partition the BMS and the battery in different spaces. | 04-25-2013 |
| 20130221927 | DEVICE FOR MEASURING THE NO-LOAD VOLTAGE OF A BATTERY - A method for measuring the voltage of a battery of an electronic device by means of a measurement device integrated to the electronic device, wherein, after the connection of the battery to the electronic device, the measurement device prevents battery charge and discharge operations during the measurement. | 08-29-2013 |
| 20130229154 | METHOD AND SYSTEM FOR ESTIMATING STATE OF CHARGE OF A LITHIUM ELECTROCHEMICAL CELL HAVING A LITHIUM PHOSPHATE TYPE POSITIVE ELECTRODE - A method and system are provided for estimating state of charge of a cell having a positive electrode, for example of a lithium phosphate type, the charge profile of which includes a range of state of charge between about 30 and about 90% in which variation of voltage is 10 times less rapid than for a state of charge higher than 90%. Determination of state of charge for a state of charge greater than 90% is based on either the use of a calibration relationship between cell voltage and state of charge when a current is passing through the cell that is less than a predetermined threshold value and its voltage has stabilized, or on the use of coulometry the result of which is corrected taking into account the accuracy of the current sensor. | 09-05-2013 |
| 20130271085 | Method of operating a lithium-ion cell having a high-capacity cathode - A method of operating a lithium-ion cell comprising (a) a cathode comprising a carbon or graphitic material having a surface area to capture and store lithium thereon; (b) an anode comprising an anode active material; (c) a porous separator disposed between the two electrodes; (d) an electrolyte in ionic contact with the two electrodes; and (e) a lithium source disposed in at least one of the two electrodes to obtain an open circuit voltage (OCV) from 0.5 volts to 2.8 volts when the cell is made; wherein the method comprises: (A) electrochemically forming the cell from the OCV to either a first lower voltage limit (LVL) or a first upper voltage limit (UVL), wherein the first LVL is no lower than 0.1 volts and the first UVL is no higher than 4.6 volts; and (B) cycling the cell between a second LVL and a second UVL. | 10-17-2013 |
| 20130335029 | METHOD AND APPARATUS FOR DISPLAYING BATTERY STATUS - The present disclosure is directed towards an adjusted display interface method and apparatus for displaying the charge condition of a battery in a gateway or similar device. In accordance with implementations of the present principles, a mapping is created between the actual battery charge percentage and a desired battery display condition that includes several conditional display levels configured to avoid user confusion. | 12-19-2013 |
| 20140266059 | SELECTIVE UPDATING OF BATTERY PARAMETER ESTIMATIONS - A vehicle is provided with an electric machine that is configured to provide drive torque, and a battery for supplying power to the electric machine. The vehicle also includes a controller that is configured to estimate present battery parameters based on input indicative of the power supplied by the battery. The controller is also configured to generate output indicative of battery power capability based on the input and prior battery parameters in response to a rate of change of a component of the power being less than a lower boundary. | 09-18-2014 |
| 20150008882 | BATTERY MODULE - A battery module is provided. The battery module includes a battery set, a voltage measurement unit, a temperature measurement unit, a matrix calculation unit and a mix algorithm unit. The voltage measurement unit measures a voltage matrix of the battery set. The temperature measurement unit measures a temperature of the battery set. The matrix calculation unit calculates a norm of the voltage matrix. The mix algorithm unit reduces a remaining capacity of the battery module by a first predetermined rate if the change of the norm is larger than a predetermined value and the rise of temperature is larger than a predetermined difference for a predetermined time, and reduces the remaining capacity of the battery module by a second predetermined rate if the change of the norm is larger than the predetermined value and the rise of temperature is not larger than the predetermined difference. | 01-08-2015 |
| 20150084600 | SYSTEM AND METHOD OF MITIGATING HIGH-TEMPERATURE , HIGH-CHARGE GAS SWELLING OF BATTERY OF PORTABLE ELECTRONIC DEVICE - A method mitigates or even prevents gas swelling of a battery of a portable electronic device at high temperatures and states of charge of the battery. The method comprises: receiving “temperature” and “state of charge” signals, which are functions of a temperature and state of charge of the battery, respectively; determining, as corresponding functions of the “temperature” and “state of charge” signals, whether the temperature is within an elevated operating-temperature range and the state of charge is within an elevated state-of-charge range; cycle-forming the battery a predetermined number of cycles; and terminating the “cycle-forming” operation of the battery when the pre-determined number of cycles is reached. | 03-26-2015 |
| 20150084601 | DEVICE FOR DETERMINING A PROPERTY OF A BATTERY AND METHOD FOR OPERATING SUCH A DEVICE - Method of operation of a device for determining a feature of a battery from among the state of charge of the battery, the state of health of the battery and the capacity of the battery, the device comprising a man-machine interface, the method comprising receiving a request to determine an actual value of the feature of a battery, determining, by interrogating a user via the man-machine interface, the next date at which a consuming device will need energy from the battery, verifying that it is possible to determine the actual value of the feature of the battery by the next date, and if such is the case, determining the actual value of the feature of the battery by carrying out a phase of charging and/or discharging of the battery. | 03-26-2015 |
| 20150331060 | METHOD FOR THE MANAGEMENT OF THE ELECTRICAL CURRENT SUPPLY IN A MOTOR VEHICLE - This disclosure relates to a method for the management of the electrical current supply in a motor vehicle having a combustion engine, wherein the charge state of a battery is detected and characterized as a discrete variable that indicates whether the prevailing charge state is below or above a calibrated threshold value. If the discrete variable indicates that the prevailing charge state is below the calibrated threshold value, the battery is charged using a relatively high voltage over a predetermined time period in such a manner that all cells of the battery are charged. If the discrete variable indicates that the prevailing charge state is above the calibrated threshold value, different temperature-dependent voltage set points of an electric generator in the vehicle are set in dependence upon a prevailing energy conversion efficiency level of the drivetrain that is detected and characterized as a further discrete variable. | 11-19-2015 |
| 20160006084 | METHOD OF CYCLING A LITHIUM-SULPHUR CELL - A method for cycling a lithium-sulphur cell, said method comprising discharging a lithium-sulphur cell, terminating the discharge when the voltage of the cell reaches a threshold discharge voltage that is in the range of 1.5 to 2.1 V, charging the lithium-sulphur cell, and terminating the charge when the voltage of the cell reaches a threshold charge voltage that is in the range of 2.3 to 2.4V, wherein the lithium-sulphur cell is not fully charged at the threshold charge voltage, and wherein the lithium-sulphur cell is not fully discharged at the threshold discharge voltage. | 01-07-2016 |
| 20180024198 | BATTERY MONITORING SYSTEM | 01-25-2018 |
| 20220137141 | METHODS AND APPARATUS FOR A BATTERY - Various embodiments of the present technology may provide methods and apparatus for a battery. The apparatus may provide a fuel gauge circuit that operates in conjunction with a charger to perform a pre-charging operation of the battery in the event the battery has experienced an over-discharge. The pre-charging operation is defined by a period of time selected according to a measured state of charge and/or an internal resistance of the battery. | 05-05-2022 |
