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687results about "Sequential battery discharge" patented technology
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Methodology for charging batteries safely
ActiveUS20110298417A1Charge equalisation circuitCharging managementMonitoring systemData acquisition
An apparatus and method for identifying a presence of a short circuit in a battery pack. A fault-detection apparatus for a charging system that rapidly charges a collection of interconnected lithium ion battery cells, the safety system includes a data-acquisition system for receiving a set of data parameters from the collection while the charging system is actively charging the collection; a monitoring system evaluating the set of data parameters to identify a set of anomalous conditions; and a controller comparing the set of anomalous conditions against a set of predetermined profiles indicative of an internal short in one or more cells of the collection, the controller establishing an internal-short state for the collection when the comparing has a predetermined relationship to the set of predetermined profiles.
Owner:TESLA INC
Parallel battery architecture with shared bidirectional converter
ActiveUS20090325056A1Easy CalibrationPrimary cellsElectrode carriers/collectorsEngineeringElectrical and Electronics engineering
Some embodiments provide a system that provides a power source. The power source includes a set of cells and a main power bus configured to connect the set of cells in a parallel configuration. The power source also includes a bidirectional converter configured to connect to one cell from the set of cells at a time. Finally, the power source includes a set of switches configured to switch each cell in the set of cells to one of the main power bus and the bidirectional converter.
Owner:APPLE INC
Automotive Power Supply System
ActiveUS20090085516A1Improve security levelFast supplyCharge equalisation circuitCircuit monitoring/indicationTerminal voltageComputer module
An automotive power supply system comprises a battery module that includes serially connected battery groups each constituted with serially connected battery cells, integrated circuits each disposed in correspondence to one of the battery groups, a control circuit, a transmission path through which the integrated circuits are connected to the control circuit and a relay circuit via which an electrical current is supplied from the battery module. In response to a start signal instructing an operation start and received via the transmission path, each integrated circuit measures terminal voltages at the individual battery cells in the corresponding battery group and executes an abnormality diagnosis. If abnormality diagnosis results provided by the integrated circuits indicate no abnormality, the control circuit closes the relay, enabling supply of electrical current from the battery module and subsequently, the control circuit receives measurement results from the integrated circuits via the transmission path.
Owner:HITACHI LTD +1
State-of-charge adjusting apparatus
InactiveUS20080036424A1Shorten a time to reach the capacity equalizationShorten the timeCharge equalisation circuitCircuit monitoring/indicationElectrical batteryState of charge
The state-of-charge adjusting apparatus which enables to shorten a time to reach a capacity equalization is provided. A CPU extracts a block consisting of a plurality of unit cells connected continuously to each other, the plurality of the unit cells each having a voltage higher than a target voltage, and connects both ends of each block to a discharge resistance to make each block discharge. Thereafter, the CPU extracts a unit cell having a voltage higher than the target voltage and connects both ends of the extracted unit cell to the discharge resistance to make the extracted unit cell discharge until the voltage of the extracted unit cell reaches the target voltage.
Owner:YAZAKI CORP
Optimized battery performance
InactiveUS20050116686A1Improve the level ofPrimary cell to battery groupingSequential battery dischargeBattery cellBattery pack
In an electrical instrument to which a plurality of battery blocks and / or a plurality of batteries are detachably connectable, to prevent a phenomenon that only specific battery and battery block are deteriorated. A hybrid battery connectable to a body of an electrical instrument consuming electrical power includes: a cell block which includes one or more battery cells, and supplies electrical power to the body of the electrical instrument by discharging after being charged; and a cell block which includes one or more battery cells, supplies electrical power to the body of the electrical instrument by discharging after being charged, and becomes active selectively with the former cell block. In the hybrid battery, a CPU selects a cell block becoming active based on the number of charge / discharge cycles of the former cell block and the number of charge / discharge cycles of the latter cell block.
Owner:LENOVO GLOBAL TECH INT LTD
Method and apparatus for creating a dynamically reconfigurable energy storage device
ActiveUS20190103750A1Charge equalisation circuitParallel/serial switchingComputer hardwareControl cell
A reconfigurable energy storage system comprising energy modules comprising interconnected circuits, each circuit having at least two terminals, which can function as input or output terminals; an energy storage unit with a positive and a negative terminal, either of which can be interposed between the terminals; a switch connected to the storage unit, and where the switch module provides parallel, series, and / or bypass connectivity for and enables the ability to reverse polarity in the storage unit, and enables the ability to simultaneously charge and discharge storage units within the system; and a control unit that monitors an operational state of the energy storage unit in the energy modules and controls the switches, to bypass, connect the storage unit in parallel, series, and / or change the polarity of the storage unit, wherein the control unit determines a number of storage units available for use from the storage units in the circuits.
Owner:GLX POWER SYST INC
Method of charging and discharging a plurality of batteries
InactiveUS20050001593A1Reduce battery capacityCharge equalisation circuitSequential battery dischargeElectrical devicesEngineering
Owner:SANYO ELECTRIC CO LTD
System for scheduling battery charge and discharge in a reconfigurable battery
ActiveUS8508191B2Maximizes battery usabilityImprove performanceParallel/serial switchingSequential battery dischargeAdaptive filterBattery charge
Effective scheduling of battery charge and discharge activities, by making the most of battery characteristics, can extend the battery pack's operation-time and lifetime. A system and method for scheduling battery activities is disclosed. This framework dynamically adapts battery activities to load demands and to the condition of individual battery cells, thereby extending the battery pack's operation-time and making them robust to anomalous voltage imbalances. The scheduling framework includes two components. An adaptive filter estimates the upcoming load demand. Based on the estimated load demand, a scheduler can determine the number of parallel-connected battery cells to be discharged. The scheduler also effectively partitions the battery cells in a pack, allowing the battery cells to be simultaneously charged and discharged in coordination with a reconfigurable battery circuit.
Owner:RGT UNIV OF MICHIGAN
Hybrid energy storage system, renewable energy system including the storage system, and method of using same
InactiveUS20100308765A1Power network operation systems integrationSequential battery dischargeRenewable energy systemEnergy storage
This disclosure generally relates to stabilizing energy provided by an energy source, and more particularly to systems and methods for using multiple types of energy storage devices to selectively capture and provide energy. An energy source provides energy, and the energy storage devices selectively capture energy provided by the energy source in excess of an immediate energy requirement of a load and selectively provide energy when the immediate energy requirement of the load exceeds the energy provided by the energy source.
Owner:EAGLE PICHER TECH LLC
Systems and Methods for Scalable Configurations of Intelligent Energy Storage Packs
A system and method for scalable configuration of intelligent energy storage packs are disclosed. According to one embodiment, a method comprises providing a first current measurement of a first energy storage cell electrically connected to a first converter circuit, and the first converter circuit controls the charge and discharge of the first energy storage cell. A first voltage measurement of the first energy storage cell is provided. First control signals are received and the first control signals are determined according to a load policy. The first converter circuit transforms a first voltage from the first energy storage cell to a desired first bus contribution voltage according to the first control signals.
Owner:VOLTERRA SEMICONDUCTOR
System and method for rechargeable battery
InactiveUS20120319653A1Circuit monitoring/indicationIndicating/monitoring circuitsRechargeable cellMonitoring system
A rechargeable battery has a plurality of cell strings each having a plurality of rechargeable electrochemical cells connected in series, and a plurality of charge regulators each connected in series with one of the cell strings. Each charge regulator is adapted to limit a charge voltage or current applied to the cell string based on a determined top-of-charge voltage for each cell string. In an embodiment, the rechargeable battery has a monitoring system to sense an operating parameter of the cell string and determine the top-of-charge voltage, and each of the charge regulators includes a charge voltage controller in communication with the monitoring system. In another embodiment, the rechargeable battery has discharge regulators each connected in series with one of the cell strings, and adapted to limit a discharge voltage or current from a given cell string based upon at least one monitored parameter of the cell string.
Owner:GENERAL ELECTRIC CO
Battery system and energy storage system including the same
ActiveUS20160226268A1Short pauseCharge equalisation circuitIndicating/monitoring circuitsState of healthElectrical battery
A battery system includes: a plurality of battery banks connected in parallel with each other; and a distribution controller coupled to the battery banks and configured to: receive a command comprising a target charging / discharging amount; determine a priority order between the battery banks based on a state of charge (SOC) and a state of health (SOH) of each of the battery banks; select at least some of the battery banks to be charged or discharged according to the target charging / discharging amount based on the priority order; and perform a charging or discharging on the at least some of the battery banks according to the target charging / discharging amount so that others of the battery banks are paused.
Owner:SAMSUNG SDI CO LTD
Battery charging system and mobile and accessory devices
InactiveUS20090033277A1Maximize energy chargedMinimize timeCircuit authenticationCharge equalisation circuitBattery chargePower parameter
Various embodiments of the present invention are directed at a method and system for recharging batteries for wireless electronic devices. According to one embodiment, a battery charging and monitoring system is disclosed. The system includes a host machine providing a plurality of charging slots and a plurality of wireless devices coupled to and powered by a plurality of batteries. The host machine is adapted to communicate with the plurality of wireless devices through a plurality of wireless links to monitor the plurality of batteries coupled to the wireless devices. According to another embodiment, an electronic device is disclosed. The electronic device is adapted to couple with at least a rechargeable battery and to negotiate with the rechargeable battery for an agreed range of power parameters. The electronic device is further adapted to accept power from and to provide power to the rechargeable battery at the agreed range of power parameters.
Owner:APPLE INC
Apparatus for treating a respiratory disorder with a power source connection
ActiveUS20150120067A1Improve efficacyImprove manufacturabilityCircuit monitoring/indicationSequential battery dischargeElectricityDisease
A respiratory device, such as a ventilator, for use in treating respiratory disorders and for preventing respiratory disorders. The respiratory device is configured to be powered from a range of different power sources including an internal battery, an external battery, AC power source or a DC power source. The device may be electrically connectable to a plurality of external batteries in a series and the power from each external battery is used sequentially along the series. A controller of the respiratory device is configured to detect the connection of the different power sources and control use of the different power sources using a power priority scheme. The controller may determine an estimate of the total available battery capacity from all the electrically connected batteries and display the total battery capacity on a user interface display of the device.
Owner:RESMED PARIS
Automotive power supply system
ActiveUS8159184B2Improve security levelFast supplyCircuit monitoring/indicationCharge equalisation circuitTerminal voltageElectrical battery
Owner:HITACHI LTD +1
Scalable method of proportional active state of charge balancing for managing variations in the state of health of batteries
ActiveUS20120319652A1Dc network circuit arrangementsCharge equalisation circuitState variationState of health
A method and system for power management among batteries of varying states of health. Two or more battery packs are switched on and off in square wave pulses to energize a multi-winding transformer, and the output of the transformer is used to power a load. As the state of charge of the battery packs decrease at different rates, the duty cycle of each battery pack's switch pulse is made proportional to its state of charge relative to the other battery packs. The battery pack with the greatest state of charge has the longest on-time and provides the most energy to the transformer, yet all battery packs contribute. A baseline duty cycle is computed by a proportional integral control module, based on voltage measurements at the load. Energy contribution is managed so that state of charge does not diverge even when the battery packs have widely varying states of health.
Owner:GM GLOBAL TECH OPERATIONS LLC
Selector circuit for power management in multiple battery systems
InactiveUS6879134B2Operational securityCharge equalisation circuitSequential battery dischargeElectrical batteryPower Management Unit
A selector circuit configured to select among a DC power source and a plurality of batteries for an electronic device. The selector circuit is responsive to an output signal from an associated power management unit. The selector circuit is further configured to permit parallel operation of two or more of the batteries. The selector circuit may further act to independently verify power conditions and override instructions from the PMU in certain instances to enhance power supply safety and battery life such as by preventing inter battery current flow from a higher potential battery to a lower potential battery coupled in parallel. A power supply block including the selector circuit and an electronic device including the power supply block is also provided. The selector circuit may be integrated with a charging circuit on one integrated circuit.
Owner:O2 MICRO INT LTD
Batteries, Battery Systems, Battery Submodules, Battery Operational Methods, Battery System Operational Methods, Battery Charging Methods, and Battery System Charging Methods
Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule-terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
Owner:LITHION BATTERY INC
Charging circuit for parallel charging in multiple battery systems
InactiveUS7064521B2Low costCharge equalisation circuitSequential battery dischargeCharge currentFast charging
A charging circuit for controlling a system charging parameter provided to a host of rechargeable batteries, wherein the host of batteries includes at least a first battery and second battery that may be coupled in parallel. The charging circuit provides for fast charging of rechargeable batteries in parallel. Independent current and voltage sensing for each battery enables parallel charging of batteries at different charging currents. The charging circuit may be configured to accept either analog or digital signals from an associated power management unit.
Owner:O2 MICRO INT LTD
Battery energy storage system and control system and applications thereof
ActiveUS20180123357A1Improve scalabilityFlexible AC transmissionCharge equalisation circuitThermal energy storageElectrical battery
An electrical energy storage unit and control system, and applications thereof. In an embodiment, the electrical energy storage unit (which may also be referred to as a battery energy storage system (“BESS”) includes a battery system controller and battery packs. Each battery pack has battery cells, a battery pack controller that monitors the cells, a battery pack cell balancer that adjusts the amount of energy stored in the cells, and a battery pack charger. The battery pack controller operates the battery pack cell balancer and the battery pack charger to control the state-of-charge of the cells. In an embodiment, the cells are lithium ion battery cells.
Owner:POWIN LLC
Method and electronic circuit for efficient battery wake up charging
InactiveUS20060139005A1Efficient battery chargingReducing battery charging timeCharge equalisation circuitSequential battery dischargeElectronic circuitEngineering
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.
Owner:O2 MICRO INT LTD
DC power control to maximize battery charging time
InactiveUS20090295330A1Reduced maximum power outputReduce system costCharging managementSequential battery dischargeElectric power transmissionElectric power
Systems and methods are provided for managing the batteries and the power source as a single combined output to power the load, allowing the system to use power source with reduced maximum power output, reducing system cost and complexity. Furthermore, the switch matrix controller efficiently and dynamically manages the internal power transfer to minimize the charging / discharging cycle of the batteries while ensuring that the power source and the batteries meet changing load power demand. Finally, maximizing charging time and having independent control of each battery increase power efficiency, prolong the operational life of the battery, and increase overall system life.
Owner:AMERICAN RELIANCE
Selector circuit for power management in multiple battery systems
InactiveUS20050168194A1Charge equalisation circuitSequential battery dischargePower Management UnitBattery system
A selector circuit configured to select among a DC power source and a plurality of batteries for an electronic device. The selector circuit is responsive to an output signal from an associated power management unit. The selector circuit is further configured to permit parallel operation of two or more of the batteries. The selector circuit may further act to independently verify power conditions and override instructions from the PMU in certain instances to enhance power supply safety and battery life such as by preventing inter battery current flow from a higher potential battery to a lower potential battery coupled in parallel.
Owner:O2 MICRO INT LTD
Selectively activated electrochemical cell system
InactiveUS6713988B2Different batteries chargingSequential battery dischargeEngineeringElectrochemical cell
A power generating system is described including a plurality of electrochemical cells. The cells are generally arranged in sections that are selectively activated individually or in combination to produce power from selected cell sections. A method of generating power is also described. A first group of one or more electrochemical cells of an array of cells are selectively activated based on requirement of an associated load. The system switches to a second group of one or more electrochemical cells of the array when the first group is discharged.
Owner:EVIONYX INC
Integrated, self-powered battery monitoring device and system
InactiveUS6915220B2Circuit monitoring/indicationIndicating/monitoring circuitsPower batteryElectrical battery
An integrated battery monitoring device includes a pair of input leads for coupling across the terminals of a battery cell to be monitored and a sensor for sensing a desired battery cell parameter. A self-contained power supply has the voltage across the battery cell terminals as an input thereto, the self-contained power supply being configured for providing power to the sensor. A pair of output leads communicates data generated by the sensor.
Owner:GENERAL ELECTRIC CO
Swelling management in batteries for portable electronic devices
ActiveUS20120025771A1Total current dropCharge equalisation circuitSequential battery dischargeCharge dischargeSystem monitor
The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system monitors a cycle number of the battery during use of the battery with the portable electronic device, wherein the cycle number corresponds to a number of charge-discharge cycles of the battery. If the cycle number exceeds a first cycle number threshold, the system modifies a charging technique for the battery to manage swelling in the battery.
Owner:APPLE INC
Digital Electrical Routing Control System for Use with Electrical Storage Systems and Conventional and Alternative Energy Sources
InactiveUS20130334880A1Charge equalisation circuitMaterial analysis by electric/magnetic meansElectricityElectrical battery
Described is a digital electrical routing control system for use with electrical storage systems and conventional and alternative energy sources, and methods of using the same. In one aspect is described a method of determining an amount of energy used by a load using a computer, with the energy being provided from a first battery and a second battery, and with other energy being supplied to charge the first battery and the second battery, the method comprising the steps of: initiating, using the computer, charging of the first battery with the other energy while the second battery is being drained by connection to the load; initiating, using the computer, charging of the second battery with the other energy while the first battery is being drained by connection to the load; and detecting, using the computer, an amount of energy consumed during an interval of time based upon an amount of charging of the first battery and the second battery during the interval of time.
Owner:AGMONITOR INC
Intelligent battery system
InactiveUS20100264738A1Low voltage shutdown capabilityDigital data processing detailsSecondary cellsState variationEngineering
An intelligent battery system for powering a mobile workstation includes a mounting block having a first battery interface bracket for the releasable attachment of a first battery, a second battery interface bracket for the releasable attachment of a second battery and a third battery interface bracket for the releasable attachment of a backup battery, and a power control circuit functionally integrated with the mounting block and being capable of detecting a change in status of at least one of the first and second batteries and routing the flow of electrical power from the first, second and backup batteries in dependence thereon.
Owner:ANTONBAUER
Multiple battery charger with automatic charge current adjustment
InactiveUS20120153899A1Charge equalisation circuitSequential battery dischargeBattery chargeCharge current
Systems and methods using the same to achieve a multiple battery charger with automatic charge current adjustment have been disclosed. The invention maintains equilibrium of charge levels during charge and discharge between all of the multiple batteries. For each battery a charger block comprising a unidirectional means and a current source for charging is assigned. The on-resistance of each charger block is automatically splitting the charge current available to the various batteries thus maintaining an equilibrium of charge levels of the batteries, i.e. supporting the battery with the lowest charge level with the highest charge current until equilibrium is reached.
Owner:DIALOG SEMICONDUCTOR GMBH
Hybrid battery pack and methods of charging and discharging the same
ActiveUS20080048608A1Maximize energy efficiency ratio per volumeMinimize the numberDc network circuit arrangementsCharge equalisation circuitCurrent sensorEngineering
A hybrid battery pack and methods of charging and discharging the same make it possible to manage at least two power sources by one circuit. The hybrid battery pack includes a first power source having a first switching circuit, a second power source connected to the first power source in parallel and having a second switching circuit, a current sensor serially connected to the first and second power sources to sense the currents of the first and second power sources, and a controller to obtain the voltages of the first and second power sources so that the first and second power sources are not over-charged or over-discharged and to calculate the entire capacity of the first and second power sources using the amount of currents obtained by the current sensor.
Owner:SAMSUNG SDI CO LTD
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