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194results about "Charge equalisation circuit" patented technology
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Method and apparatus for controlling the voltage of electrochemical cells in a rechargeable battery
InactiveUS20040251874A1reduce voltageCharge equalisation circuitElectrical testingElectrical batteryPhysical chemistry
An apparatus is dedicated to controlling the voltage of a battery comprising at least two modules connected in series and each comprising at least one electrochemical cell, and each coupled to voltage balancing means. The apparatus comprises measurement means for determining first voltages across the terminals of each of the modules, calculation means for measuring a second voltage across the terminals of the battery and for determining a mean voltage per module representative of the second voltage divided by the number of modules, and processor means for comparing each measured first voltage with the mean voltage per module and for delivering to the balancing means signals representative of the result of the comparison whenever the first voltage of a module is greater than the mean voltage, such that the balancing means reduce the voltage across the terminals of the module.
Owner:SAFT GRP SA
Physics-informed state of health for grid applications using a digital twin of a battery energy storage system
PendingUS20250391930A1Batteries data exchangeCharge equalisation circuitElectrical batteryState of health
In an approach to a state of health for grid applications, a system includes one or more battery energy storage systems having a plurality of batteries; energy sources; power distribution systems; and computing devices. The computing devices are configured to: for each of the battery energy storage systems: receive battery parameters for each of the batteries from the battery energy storage systems; determine a lithium plating state, a solid electrolyte interface (SEI) thickness, and a dendrite length for each of the plurality of batteries; determine a battery state of health (SOH) for each of the batteries based on at least one of the lithium plating state, the SEI thickness, and the dendrite length; determine a battery charge profile to mitigate aging for each of batteries based on the SOH; and send updated battery parameters and control thresholds for each of batteries to each of the battery energy storage systems.
Owner:SOUTHWEST RES INST
Modular converter for vehicle-to-vehicle charging
A converter system, e.g., for vehicle-to-vehicle charging, includes galvanically-isolated modular first and second converters having the same maximum voltage rating, a direct current (DC) voltage bus interconnecting the converters, and an electronic controller. An input voltage to the DC bus is converted into an output voltage via switching control signals to the modular converters. The system's voltage rating may equal the maximum of the input and / or output voltage, or it may equal the maximum input voltage and be about 50-percent of the maximum output voltage. The maximum input and output voltages may be equal. When the voltage rating is about 50-percent of the maximum input voltage, capacitors may be connected in parallel with the modular converters on an input side thereof. Switching circuits may be connected to the bus to control the conversion of the input voltage via switching control signals.
Owner:GM GLOBAL TECHNOLOGY OPERATIONS LLC
Power electronic intelligent battery unit
PendingUS20250385325A1Charge equalisation circuitCircuit monitoring/indicationElectrical batteryMechanical engineering
Disclosed is a power electronic intelligent battery unit, including: a battery module, the battery module comprising a plurality of battery cells connected in series and sensors for measuring the voltage, current, pressure and / or temperature of the battery cells; and an intelligent battery interface, the intelligent battery interface being connected to an output side of the battery module and the sensors, and the intelligent battery interface having a power interface and an information interface for the outside, wherein the battery module monitors the voltage, current, pressure and / or temperature information of the battery cells, while providing or absorbing power by means of the intelligent battery interface.
Owner:SHANGHAI JIAOTONG UNIV
Supercapacitor based energy storage device
PendingUS20250309669A1Charge equalisation circuitCells structural combinationCharge retentionElectrical battery
An energy storage device includes a charge storage assembly, an auxiliary storage element, and a charge control circuit. The charge storage assembly includes an array of supercapacitors coupled in series, a plurality of batteries, and a charge retention circuit. Each of the plurality of batteries is electrically coupled to a corresponding supercapacitor in the array of supercapacitors. The charge retention circuit is configured to maintain a charge state of at least one supercapacitor in the array of supercapacitors when the at least one supercapacitor is in an idle state. A charge control circuit is configured to selectively transfer charge between the at least one supercapacitor in the array of supercapacitors and the auxiliary storage element.
Owner:ENERCAP ENERGY HOLDING LTD
Balancing control method for battery cluster
PendingUS20260045806A1Charge equalisation circuitCircuit monitoring/indicationElectrical batteryState of health
The present disclosure discloses a balancing control method, apparatus, and system for a battery cluster, and belongs to the field of energy storage systems. The balancing control method for the battery cluster includes: obtaining at least one of a first actual state of charge and an actual state of health of each battery cell, and a second actual state of charge of each PACK; controlling, by a first balancing module based on the at least one of the first actual state of charge and the actual state of health, at least one of state of charge balancing and state of health balancing of each battery cell; and controlling, by a second balancing module based on the second actual state of charge, state of charge balancing of the PACK.
Owner:SHANGHAI SIGEYUAN INTELLIGENT TECH CO LTD +1
Programmable battery pack
PendingUS20250329809A1Charge equalisation circuitCircuit monitoring/indicationComputer hardwareElectrical battery
The present disclosure relates to a reconfigurable battery system and method of operating the same. An example apparatus includes at least one memory, instructions in the apparatus, and processor circuitry to execute the instructions to determine a state of charge of a battery, determine a closed circuit voltage of the battery, determine a value of a parameter based on a ratio of the state of charge and the closed circuit voltage, and control a switch coupled to the battery based on the value of the parameter, the controlling of the switch to either cause the battery to be coupled to a battery string or cause the battery to be disconnected from the battery string.
Owner:AURORA FLIGHT SCIENCES CORP
Solar power-assisted hybrid battery balancing system
PendingUS20250385527A1Charge equalisation circuitCircuit monitoring/indicationThermodynamicsElectrical battery
Systems and methods directed to solar power-assisted hybrid battery balancing are disclosed. For example, operating the solar power-assisted hybrid battery balancing system includes determining accessibility of solar power from a plurality of solar panels and in response to determining solar power is not accessible, activating one or more arrangements of a plurality of switches to enable a battery balancing process including redistribution of stored energy among a plurality of battery cells to maintain a balanced state-of-charge across the plurality of battery cells and transferring of charge between battery cells via a capacitor coupled to output terminals of a solar charge controller. The method includes, in response to determining solar power is accessible, activating one or more other arrangements of the plurality of switches to enable a solar battery balancing process including directing of solar-generated electrical energy among the plurality of battery cells to maintain the balanced state-of-charge.
Owner:KETTERING UNIVERSITY
Supplying power to an electric vehicle
A power supply system that utilizes a hybrid architecture to enable low cycle-life, high energy density chemistries to be used in rechargeable batteries to extend the range of a traction battery.
Owner:OUR NEXT ENERGY INC
A device, and corresponding method, for cell balancing in an electric battery system
PendingUS20250330028A1Charge equalisation circuitCircuit monitoring/indicationElectrical batteryState of charge
The present disclosure relates to a battery pack of an electric battery system, for balancing individual cells within the battery pack with respect to voltage, charge and / or state of charge. The electric battery system comprises at least one pack, each pack comprising a plurality of battery cells, and each battery cell is monitored via a cell monitoring device (CMD), which provides cell-level measurements. Cell balancing is provided in a manner which allows for the simultaneous measuring of a cell-level balancing current and a cell-level balancing voltage during the balancing. Such measuring allows for control of the cell balancing without having to continuously interrupt and restart the cell balancing procedure.
Owner:DUKOSI
Advanced battery charging on modular levels of energy storage systems
Embodiments that provide advanced charging of energy source arrangements for energy storage applications are disclosed. The embodiments can be used within energy storage systems having a cascaded arrangement of converter modules. The embodiments can include the application of pulses to an energy source of each module of the system. The pulses can be applied for a duration sufficient to initiate an electrochemical reaction. Feedback based pulse control embodiments are also disclosed.
Owner:TAE TECHNOLOGIES INC
Self-regulating battery cell
PendingUS20260038889A1Charge equalisation circuitCells structural combinationElectrical batteryControl theory
A battery cell system includes multiple battery cells and a control circuit. The battery cells include an internal cell resistance. The control circuit is configured to detect when a charge level of a first battery cell of the battery system is greater than a charge level of a second battery cell of the battery system; and activate an internal cell resistance of the first battery cell to reduce the charge level of the first battery cell and deactivate the internal cell resistance when the charge level of the first battery cell is within a specified threshold charge level of the second battery cell.
Owner:CATERPILLAR INC
Determination of a compensation current for a charge equalization current
A computer system determines a compensation current adapted to counteract at least parts of a charge equalization current expected to be generated by an activation of an additional battery pack in parallel connection with one or more currently activated battery packs. The compensation current is determined as a current range between a lower and upper compensation current limits. The lower limit is based on a voltage of the additional battery pack, and a voltage and impedance of the currently activated battery packs. The upper limit is based on a maximum discharge ability of a system powered by the currently activated battery packs, a maximum discharge ability of the currently activated battery packs, a voltage and impedance of the additional battery pack, and a voltage and impedance of the one or more currently activated battery packs.
Owner:VOLVO TRUCK CORP
Energy storage device alternating current multi-phase system and electric quantity balance control nethod therefor
PendingUS20250373031A1Charge equalisation circuitCircuit monitoring/indicationThermodynamicsProcess engineering
An electric quantity balance control method includes: S1: obtaining remaining electric quantities of a plurality of energy storage devices; S2: calculating an average value of the remaining electric quantities of the plurality of energy storage devices; S3: subtracting the average value calculated in step S2 from the remaining electric quantity of each energy storage device to obtain a corresponding difference, and for each energy storage device, if the corresponding difference is greater than 0, increasing an output voltage of the energy storage device to increase its output power, otherwise if the corresponding difference is less than 0, reducing the output voltage of the energy storage device to decrease its output power. According to the energy storage device alternating current multi-phase system and the electric quantity balance control method therefor provided in the present invention, the problem of the overall endurance of the system being greatly shortened is effectively solved.
Owner:SHENZHEN POWEROAK NEWENER CO LTD
Multiplexed battery management system
ActiveUS12580394B2Charge equalisation circuitSequential battery dischargeElectrical batteryControl theory
Electrochemical cell and battery management systems comprise at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells. The system includes a multiplexing switch apparatus connected to each string of cells and a controller. the controller is used to control various aspects of the charge and / or discharge of the electrochemical cell and / or battery.
Owner:SION POWER CORP
Battery pack charging method and power storage system
PendingUS20250337254A1Charge equalisation circuitSecondary cells charging/dischargingBattery packVoltage
A method of charging a battery pack is a method of charging a battery pack by charging, with one charger, a battery pack configured by connecting, in parallel, a plurality of storage batteries configured to store and release power, the method comprising: a detection step of detecting voltage and current values with respect to each of the storage batteries, which are connected in parallel; a determination step of determining whether or not a voltage detected for each of the storage batteries in the detecting step, is equal to or less than a first set voltage; and a charging step of charging the storage batteries, which are connected in parallel, wherein: in a first case, in which the voltages of all the storage batteries are determined to be equal to or less than the first set voltage in the determination step.
Owner:ENERGYWITH CO LTD
Vehicle for transporting and charging outdoor power equipment
ActiveUS12500440B2Charge equalisation circuitItem transportation vehiclesDocking stationPower equipment
A trailer includes a first power equipment having an equipment battery pack, a charging device having a primary battery pack, and a docking station electrically connected to the primary battery pack. When the first power equipment is positioned in the docking station, the docking station supplies power from the primary battery pack to the equipment battery pack to recharge the equipment battery pack.
Owner:BRIGGS & STRATTON CORP
Household load power supply method and household load power supply device, and battery charge method and battery charge device
PendingUS20250309660A1Charge equalisation circuitCircuit monitoring/indicationBattery chargeElectrical battery
A household load power supply method and a battery charge method are provided. A central controller can allocate a discharge power for each battery according to a required total discharge power, a state-of-charge data and state-of-heath data of n batteries, and the discharge power for each battery is proportional to the state-of-charge data and state-of-heath data of the each battery. A sum of discharge powers allocated to the n batteries is equal to the total discharge power. In this way, a battery with higher state-of-charge data and higher state-of-heath data can have higher discharge power, and the battery with higher state-of-heath data can have higher discharge power. Two dimensions, that is, the state-of-charge data and state-of-heath data are comprehensively considered, and thus the discharge powers allocated to the batteries are more reasonably and balanced, thereby extending an overall service life of a plurality of batteries in parallel.
Owner:ROYPOW TECH CO LTD
Battery management apparatus and operating method thereof
PendingUS20260025013A1Charge equalisation circuitCircuit monitoring/indicationElectrical batteryControl theory
Owner:LG ENERGY SOLUTION LTD
Wireless network wakeup from primary device
PendingUS20250323511A1Charge equalisation circuitCircuit monitoring/indicationComputer networkElectrical battery
Methods, apparatus, systems and articles of manufacture are described for a wireless battery system. An example apparatus includes at least one memory, instructions, and processor circuitry to at least one of instantiate or execute the instructions to identify a first battery node to transmit an uplink command during a first superframe interval, transmit a downlink command to the first battery node and a second battery node, the first battery node to switch in the first superframe interval from a receive state to a transmit state in response to the downlink command, the first battery node to transmit the uplink command in the transmit state, and receive the uplink command from the first battery node in the first superframe interval.
Owner:TEXAS INSTRUMENTS INC
Multi-battery power supply, charging / discharging method, and electronic device
Owner:HONOR DEVICE CO LTD
Methods and systems for managing multi-cell batteries
ActiveUS12467981B2Charge equalisation circuitCircuit monitoring/indicationThermodynamicsElectrical battery
A method for measuring electrical quantities in an electrical system includes obtaining a first set of known electrical outputs of an electrical quantity sensor at a first temperature. The method also includes obtaining a second set of known electrical outputs of the electrical quantity sensor at a second temperature that is different from the first temperature. The method further includes measuring an operational temperature of one or more locations in the electrical system. The method still further includes computing a pair of reference electrical output values corresponding to the measured operational temperature in accordance with the first set of known electrical outputs at the first temperature and the second set of known electrical outputs at the second temperature. The method also includes interpolating among the pair of computed reference electrical output values to determine a temperature-corrected electrical quantity based on the measured operational temperature and the reference electrical output values.
Owner:NOVA SEMICON INC
Balancing, precharge and active discharge operation of split HV battery systems in electric vehicles
A circuit enabling precharge, active discharge and battery balancing operations in a single subcircuit is described. According to one or more embodiments, a circuit is provided comprising a first battery comprising a positive terminal coupled to a positive transmission line and a negative terminal coupled to a common node, wherein the positive transmission line comprises a first contactor, a second battery comprising a positive terminal coupled to the common node and a negative terminal coupled to a negative transmission line, wherein the negative transmission line comprises a second contactor, and a subcircuit coupled to the common node, to the positive transmission line, and to the negative transmission line.
Owner:VOLVO CAR CORP
Modular power supplies
PendingUS20250385540A1Charge equalisation circuitAc network load balancingPower stationElectrical battery
Modular power supplies and configurations of connecting the same. One example provides a power supply system comprising a battery extender configured to output first direct current (DC) power and a power station electrically connected to the battery extender. The power station includes a battery, a DC input port configured to receive the first DC power from the battery extender and an alternating current (AC) port configured to receive first AC power from an external power supply. The power station also includes a DC output port configured to provide second DC power to a first connected device, and an AC output port configured to provide second AC power to a second connected device.
Owner:TECHTRONIC CORDLESS GP
Methods for operating battery frequency response
ActiveUS12562570B2Charge equalisation circuitCircuit monitoring/indicationElectrical batteryState of charge
The present disclosure relates to computer-implemented method of operating a battery for providing frequency response to a power grid, the battery comprising a plurality of containers each configured to store electrical energy, the method comprising, for a given container: determining a container target response by dividing a system target response by the plurality of containers; determining a container capacity by dividing a battery capacity by the plurality of containers; determining a state-of-charge offset between an average state of charge across the plurality of containers and a state of charge of the given container; determining a response adjustment by multiplying the container capacity by the state-of-charge offset; and determining a response for the given container by adjusting the container target response by the response adjustment.
Owner:KRAKEN TECHNOLOGIES LTD
Battery system comprising first and second electrical energy stores and a voltage conversation unit having multiple voltage conversion functionalities that share circuitry
A battery system including: a first electrical energy store being configured to provide a first electrical energy output at a first voltage and being connected to a voltage conversion unit; a second electrical energy store being configured to provide a second electrical energy output at a second voltage and being connected to an output of the battery system; and the voltage conversion unit connecting the first electrical energy store and the second electrical energy store and being configured to: perform a first voltage conversion functionality, in which the voltage conversion unit is configured to convert between the first voltage and the second voltage; and perform a second voltage conversion functionality, in which the voltage conversion unit is configured to convert between a third voltage and the first or second voltage; the first voltage conversion functionality and the second voltage conversion functionality sharing circuitry of the voltage conversion unit.
Owner:MCLAREN AUTOMOTIVE LTD
Semiconductor device, method of controlling cell balance, and battery pack
PendingUS20250323512A1Charge equalisation circuitCircuit monitoring/indicationElectrical batteryDevice material
An improved cell balancing is provided. Estimating a charge state of each battery cell at each time point based on a voltage of each cell coupled in series, calculating an integrated value of a current flowing through multiple battery cells during a period between each time point, estimating a maximum capacity of each battery cell based on its charge state at each time point and the integrated value of the current, determining a reference battery cell based on the maximum capacity and charge state of each battery cell, and discharging a battery cell other than the reference battery cell.
Owner:RENESAS ELECTRONICS CORP
Power storage system and power storage device
A power storage device includes: a battery cell; a power terminal; a memory that stores information on the battery cell; and a signal terminal at which voltage and temperature signals of the battery cell and input-output data of the memory are transmitted and received. A charger includes: a signal terminal; a power output terminal to output power to the power storage device; an AC power input terminal; a DC power input terminal; a power converter that converts input power into output power; a current converter, a voltage converter, and a temperature converter that convert a current signal, a voltage signal, and a temperature signal of the battery cell into current data, voltage data, and temperature data, respectively; and an ECU that processes the data.
Owner:TOYOTA JIDOSHA KK
Battery equalizer and method of conducting a battery equalization
A battery equalizer for a series-connected battery string. The battery equalizer contains a plurality of cell circuits, an AC link, and a DC / AC converter. The plurality of cell circuits at their input ends is connected in parallel with each other and to the AC link. Each cell circuit at its output end is adapted to connect to a corresponding battery cell of the battery string. The DC / AC converter connects to the AC link. Each of the cell circuits contains an AC / DC converter, and an AC side of the AC / DC converter is capacitively-coupled to the AC link at the input end of the cell circuit. As the current taken from the first stage is common to all battery cells, charging or discharging of individual battery cells is autonomously determined by the output current of the second stage.
Owner:CITY UNIVERSITY OF HONG KONG
Capacitor cell based energy storage system, method of charge balancing, encapsulated capacitor cell, and encapsulated solid state capacitor cell
The present disclosure provides an energy storage system, device, and method of operating thereof. The device includes multiple capacitor cells, e.g., encapsulated capacitor cells, connected in series. A MOSFET-based, cross-point switch can be connected to the individual capacitor cells to manage balancing. Sensors can monitor the individual capacitor cells and provide data to a processor that determines instructions for the array of switches and individual capacitor cells. The capacitor cells can include capacitors based on solid-state dielectrics. A method of charge balancing, e.g., charge balancing with the energy storage device or system, can include sending instruction to a digital control port embedded within each capacitor cell.
Owner:ENERCAP ENERGY HOLDING LTD