Abstract: A charge and discharge control device includes: a coordination unit which generates coordination information for calculating an output value which each storage battery is caused to output, based on a bus voltage value and a target voltage value; a string output calculating unit which calculates, based on the coordination information, an output target value indicating the output value which the storage battery is caused to output to maintain the bus voltage value at the target voltage value; and a control unit which causes, among the storage batteries, a storage battery corresponding to the calculated output target value to output an output having magnitude indicated by the calculated output target value, wherein the coordination unit generates the coordination information to avoid simultaneous presence of a storage battery that outputs an output in a charge direction and a storage battery that outputs an output in a discharge direction.

Abstract: Charging is started with charge voltage set to a first voltage value (lower than a normal charge voltage) by a charge voltage change means, the first voltage value being predetermined to ensure that secondary batteries constituting a parallel-arrangement battery pack are charged up to and maintained at a predetermined SOC lower than full charge (between 80 and 90% of full charge). When a charge current detection means detects that charge current has decreased to a predetermined value A1, the charge voltage is set to a second voltage value (normal charge voltage) higher than the first voltage value by the charge voltage change means, the second voltage value being predetermined to enable the secondary batteries to be charged up to full charge. When a battery SOC detection means detects that at least one of the secondary batteries has reached full charge, charging is terminated.

Abstract: A battery pack for an electrically driven automobile includes plural battery banks, a battery management unit that detects current flows, voltages and temperatures, first and second terminals connected respectively to the positive and negative electrode terminals of the battery banks, plural third and fourth terminals connected respectively to the positive and negative electrode terminals of the battery banks, a main contactor that switches the connection between the positive electrode terminals of the battery banks and the first terminal and the connection between the negative electrode terminals of battery banks and the second terminal, sub-contactors that switch the connection between the positive electrode terminals of the battery banks and the first terminal, and charging sub-contactors that switch the connection between the positive electrode terminals of the battery banks and the third terminals and the connection between the negative electrode terminals of the battery banks and the fourth terminals, r

Abstract: The present disclosure provides a system, method, and apparatus for battery management. The disclosed method involves current balancing through sinking and/or sourcing current, by at least one virtual cell, for battery cells in a battery pack based on available current and capacity of the battery cells. In one or more embodiments, at least one virtual cell is capable to sink and/or source current for at least one degraded battery cell or at least one dead battery cell.

Abstract: In control over a power supply system that includes a plurality of parallel connected batteries, electric power is supplied from the plurality of batteries to an electrical device at a total output upper limit value that is obtained by applying a first computing to individual output upper limit values of the plurality of batteries, and, when there is an abnormality in at least one of the plurality of batteries, the at least one of the plurality of batteries, having an abnormality, is isolated, and a total output upper limit value is set by applying a second computing to the battery having no abnormality, the total output upper limit value being smaller than the total output upper limit value obtained through the first computing.

Abstract: The first battery is configured to be charged and discharged with a larger current than the second battery. The second battery has a higher storage capacity than the first battery. When the voltage of the second battery is lower than the voltage of the first battery, the controller allows charging of the second battery through the second relay while prohibiting charging of the first battery through the first relay until the voltage of the second battery reaches the voltage of the first battery.

Abstract: A power supply apparatus includes: a plurality of power supply units; a positive polarity coupling portion; and a negative polarity coupling portion; each of the power supply units is provided with: battery units; first relays connected in series to the battery units, capable of disconnecting electrical connection between the battery units and any one of the positive polarity coupling portion and the negative polarity coupling portion; resistor elements having one ends which are connected to the battery units between the battery units and the first relay; a resistor coupling portion; and a second relay connected to the resistor coupling portion, capable of disconnecting electrical connection between the resistor coupling portion and any one of the positive polarity coupling portion and the negative polarity coupling portion which is connected to the first relays, the second relay having fewer in number than the number of the power supply units.

Abstract: Disclosed is a battery balancing circuit for balancing the voltages of a reference battery module and a detachable battery apparatus, which has a load channel, a charging-discharging channel, a MCU and a charging-discharging control circuit. The reference battery module and detachable battery apparatus are connected in parallel. The load channel is connected to the reference battery module. The charging-discharging channel is disconnected from the reference battery module. The load and charging-discharging channels are connected to the detachable battery apparatus respectively through a first and a second switches. When the voltage of the detachable battery apparatus is higher or lower than a threshold value, the MCU controls the first and second switches, such that the detachable battery apparatus is connected to the charging-discharging control circuit through the charging-discharging channel and disconnected from the load channel.

Abstract: A battery power supply apparatus has: a battery including a parallel circuit that has series circuits connected in parallel, each of the series circuits having a secondary battery and a cutoff element connected in series, each of the cutoff elements becoming a disconnected state, when an abnormality occurs in the secondary battery; a first detector detecting an overall current value flowing through the battery block; a second detector connected in parallel to the series circuits to detect a block voltage value of the battery block; a setting portion setting a current limit value; and an estimation portion estimating, as the number of valid batteries, the number of cutoff elements which have not become disconnected states, based on the overall current value and the block voltage value. The setting portion sets the current limit value so that the current limit value decreases as the number of valid batteries decreases.

Abstract: A battery management circuit for managing a battery apparatus is provided. The battery apparatus includes at least a first battery unit and a second battery unit connected in parallel. The battery management circuit includes a detection circuit and an adjustment circuit. The detection circuit is arranged to detect a voltage relationship between the first and second battery units to generate a first detection result. The adjustment circuit is coupled to the detection circuit. When the voltage relationship does not meet a predetermined voltage condition, the adjustment circuit is arranged to adjust a voltage of at least one of the first and second battery units in order to make the voltage relationship meet the predetermined voltage condition.

Abstract: An electrical storage system includes: a plurality of electrical storage portions that are connected parallel to each other; a measurement portion that measures the full charge capacity of each of the electrical storage portions while switching an electrical storage portion that is a measurement target among the electrical storage portions; and a charge and discharge control portion that performs charge and discharge control on the electrical storage portions. The charge and discharge control portion makes other electrical storage portion other than the measurement target perform charge or discharge in a period of time during which the measurement portion measures the full charge capacity of the electrical storage portion that is the measurement target.

Abstract: Disclosed is a battery and load equalization circuit that prevents the in-rush of current when batteries and/or loads are initially connected in parallel. Various techniques are used including charging, discharging and use of DC to DC converters to equalize charges between batteries and between batteries and capacitive loads.

Abstract: A battery system is disclosed which includes: first and second battery blocks connected in parallel, each including a plurality of batteries connected in series; a battery state detector detecting voltages of the batteries in either of the second battery blocks. The number of the batteries in the second battery block is smaller than that of the first battery block. The battery state detector is installed integral with the second battery block.

Abstract: A battery pack is disclosed. The battery pack includes a first battery cell group having a plurality of battery cells, and a second battery cell group having a plurality of battery cells. The battery pack also includes a first impedance unit serially connected to the first battery cell group, a second impedance unit serially connected to the second battery cell group, and a battery management unit respectively determining a degree of deviation of the first battery cell group and the second battery cell group to adjust impedances of the first impedance unit and the second impedance unit. Accordingly, a decrease in performance due to deviation difference between batteries may be prevented.

Abstract: A circuit and communication method for charging and/or discharging electrical energy storage devices (e.g., one or more cells of ultracapacitors, one or more cells of batteries, one or more cells of ultracapacitors and batteries).

Abstract: A power supply apparatus includes a plurality of power storage modules that are connected in parallel and a backup power storage module that is connected in parallel with the plurality of power storage modules. When charging or discharging of at least one of the power storage modules is disabled, charging of the other power storage modules is inhibited, discharging of the backup power storage module is permitted, states of charge of the backup power storage module and the other power storage modules are detected, and charging of the backup power storage module and the other power storage modules is permitted in accordance with the detected states of charge.

Abstract: A method for balancing voltage for a multi-cell battery system, in which the battery system includes at least two parallel groups of cells connected in series and in which the parallel group of cells includes at least one battery cell, includes: charging the battery system by keeping the voltage of all parallel groups of cells less than or equal to a second threshold voltage value, while at least the voltage of one group of parallel cells is less than or equal to a first threshold voltage; and while at least the voltage of one group of parallel cells is less than or equal to a second threshold voltage; and while the charging current is above a predefined minimal current. The method further includes measuring the voltage of each parallel group of cells while electrical loads are shut off and dissipating energy in each of the parallel group of cells of the amount that is represented by the voltage difference between the individual parallel group of cells and the parallel group of cells with the lowest voltage.

Abstract: A device and method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers, wherein a second charger which parallel connected to the first charger is additionally arranged to ensure that the charge process can be continued, and the charge process can be performed without battery management system.

Abstract: A power storage apparatus includes a main power line, a first battery rack connected to an output terminal of the main power line at a first distance from the output terminal, a second battery rack connected to an output terminal of the main power line at a second distance from the output terminal, the second distance being different from the first distance, and a load resistor connected between the second battery rack and the main power line, the load resistor having a resistance that adjusts an impedance difference between the first battery rack and the second battery rack, the impedance difference resulting from a difference between the first distance and the second distance.

Abstract: 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.

Abstract: A power supply apparatus includes: a plurality of power supply units; a positive polarity coupling portion; and a negative polarity coupling portion; each of the power supply units is provided with: battery units; first relays connected in series to the battery units, capable of disconnecting electrical connection between the battery units and any one of the positive polarity coupling portion and the negative polarity coupling portion; resistor elements having one ends which are connected to the battery units between the battery units and the first relay; a resistor coupling portion; and a second relay connected to the resistor coupling portion, capable of disconnecting electrical connection between the resistor coupling portion and any one of the positive polarity coupling portion and the negative polarity coupling portion which is connected to the first relays, the second relay having fewer in number than the number of the power supply units.

Abstract: Provided is a storage battery system comprising a plurality of storage batteries connected in parallel, characterized by detecting the temperature and energy amount of each battery connected in parallel, calculating the deterioration rate of each battery based on the detected temperature and energy-amount, and controlling the power amount to be inputted to and output from each battery so that the deterioration rate of each storage battery will come closer to each other.

Abstract: A charge/discharge control system for a storage battery assembly includes a plurality of battery blocks each connected in parallel to a charge/discharge main bus via protective resistors, and a plurality of switches connected in parallel to the protective resistors, between the charge/discharge main bus and the plurality of battery blocks. In a state in which the plurality of switches are all on, when one of the plurality of switches turns off and a parallel off occurs, a charge/discharge control device performs processing for throttling the charge/discharge power, that flows to the charge/discharge main bus, in accordance with a pre-set reference. When the parallel off is canceled by the throttling processing, the charge/discharge power is restored.

Abstract: Remaining capacity calculation section (110) calculates remaining capacities for each of cells (300-1) and (300-2) connected in parallel with each other, and control section (130) stops, after starting discharge of cells (300-1) and (300-2), discharge of one of cells (300-1) and (300-2) whose remaining capacity calculated by remaining capacity calculation section (110) has become equal to a threshold value stored in storage section (120).

Abstract: An apparatus for powering an electric hand-held power tool device by an output voltage includes at least two connectors for connecting the apparatus to at least two batteries. At least two switches, and a command circuit of the switches, are provided. The command circuit is arranged for commanding the powering of the electric hand-held power tool device by using the battery which presents the highest open circuit voltage if the output voltage is higher than the open circuit voltage of each of the other batteries. And, by using the battery which presents the highest open circuit voltage and at least one other battery if the output voltage is lower than the open circuit voltage of the other battery, the battery which presents the highest open circuit voltage and the at least one other battery being connected in parallel.

Abstract: Remaining capacity calculation section (110) calculates remaining capacities for each of cells (300-1) and (300-2) connected in parallel with each other, and control section (130) discharges one of cells (300-1) and (300-2) having priority until the remaining capacity of that cell becomes equal to a second threshold value stored in storage section (120), if the remaining capacity of the one of the cells calculated by remaining capacity calculation section (110) is equal to a first threshold value stored in storage section (120).

Abstract: An energy storage system is provided. The system includes a plurality of energy storage modules connected in parallel. Each energy storage module has an energy storage source, a bidirectional current converter configured for supplying charge to the energy storage source from a power source and for discharging current for use by an electrical device, a monitoring module for monitoring the energy storage source and the current converter, and a controller configured to control the current converter based upon monitored characteristics of the storage source and the current converter to produce a respective output signal for each module. A communications module is in connection with each output signal of the energy storage modules and configured for communicating a combined output signal with one of the power source and the electrical device.

Abstract: A power supply stack replacement method includes: discharging or charging power supply stacks of a power supply device in which the power supply stacks are electrically connected in parallel with each other until the SOC of each of the power supply stacks becomes a predetermined value; and replacing a targeted power supply stack among the power supply stacks of which the SOC is the predetermined value through the charging or discharging with a replacement power supply stack.

Abstract: An apparatus for powering an electric hand-held power tool device by an output voltage includes at least two connectors for connecting the apparatus to at least two batteries. At least two switches, and a command circuit of the switches, are provided. The command circuit is arranged for commanding the powering of the electric hand-held power tool device by using the battery which presents the highest open circuit voltage if the output voltage is higher than the open circuit voltage of each of the other batteries. And, by using the battery which presents the highest open circuit voltage and at least one other battery if the output voltage is lower than the open circuit voltage of the other battery, the battery which presents the highest open circuit voltage and the at least one other battery being connected in parallel.

Abstract: A charging device has a charging unit and a control unit. The charging unit charges a battery pack the battery pack being either a first type or a second type of battery pack. The first type of battery pack includes a single battery cell or a first plurality of battery cells connected in series. The second type of battery pack includes a single battery unit or a second plurality of battery units connected in series. Each battery unit includes at least two battery cells connected in parallel. The control unit controls the charging unit to control at least one of a charging current flowing through the battery pack and a charging voltage applied across the battery pack, depending on the battery pack to be charged.

Abstract: Different components in a wireless transceiver are powered using different power supplies. For example, one or more first tasks in the wireless transceiver can be powered with a Galvanic cell, and one or more second tasks in the wireless transceiver can be powered with a fuel cell. The one or more first tasks could represent higher-current or intermittent tasks, and the one or more second tasks could represent lower-current or continuous tasks. The one or more first tasks could include transmission of a radio frequency (RF) signal, which may involve RF signal modulation or RF signal amplification. The one or more second tasks could include RF signal tuning, RF signal reception, RF signal demodulation, analog-to-digital conversion, digital-to-analog conversion, digital signal processing, operation of a controller, illumination of a display, operation of an audio speaker, operation of a microphone, or operation of a keypad.

Abstract: An apparatus balances a discharge in parallel battery configuration by having a battery pack (a) with a first battery system and a second battery system in parallel configuration, and a pulse width modulation device and (b) being interconnectable to a load. Each of the first and second battery systems has, in series and in order, a first voltage sensor, a resistor, a second voltage sensor, a string of battery cells, and a switching device. The first and second voltage sensor, in each battery system, measures an electrical current, used to calculate the voltage drop across each resistor. The voltage drop values for each battery system determine whether the pulse width modulation device alters or maintains the pulse width modulation applied to each battery system's switching device. By maintaining or altering the pulse width modulation applied to each switching device, the apparatus effectively balances the electrical current discharge from each battery system.

Abstract: A secondary battery including a first bare cell, a second bare cell disposed to face at least a portion of the first bare cell, and a protection circuit module including a circuit board having an electrical circuit device mounted thereon and at least one connection tab between the first and second bare cells, the connection tab electrically connecting the circuit board to the first and second bare cells.

Abstract: A battery control circuit includes an electronic switch, first and second diodes, and first and second batteries. A positive terminal of the first battery is connected to a positive terminal of the second battery through the first diode. A negative terminal of the first battery is connected to a positive terminal of the second battery through the electronic switch, and connected to a negative terminal of the second battery through the second diode. When the electronic switch receives a first control signal, the electronic switch is turned on, the first and second diodes are turned off, and the first and second batteries are connected in series. When the electronic switch receives a second control signal, the electronic switch is turned off, the first and second diodes are turned on, and the first and second batteries are connected in parallel.

Abstract: A battery pack for an electric vehicle includes a first battery, a second battery, and a load arranged in parallel. A first semiconductor switching module is arranged in series with the first battery, and to selectively allow current flow from the first battery to the load and from the load to the first battery. A second semiconductor switching module is arranged in series with the second battery, and to selectively allow current flow from the second battery to the load and from the load to the second battery. A battery control module stores at least one of charge data and usage data corresponding to the first battery and the second battery, and selectively turns on and off the first semiconductor switching module and the second semiconductor switching module based on at least one of the charge data and the usage data.

Abstract: In a storage system provided with a plurality of storage modules, the rated power consumption can be reduced. The storage system is provided with a charge control unit. The charge control unit stops, when detecting that a predetermined number of a plurality of battery modules are during battery charging, the battery charging in the remaining battery modules.

Abstract: A cell balance control unit is provided, including: a discharge circuit connected to each of a plurality of battery cells constituting a battery in parallel; a voltage detecting circuit that detects a voltage of each of the battery cells; and a control device that controls each of the switching elements of the discharge circuit so that the voltage of each of the battery cells is made uniform based on voltage detection results of each of the battery cells, wherein the control device controls the switching elements of the discharge circuits connected to the adjacent battery cells in each different duty ratio, and detects disconnection of wirings extracted from both ends of each battery cell based on a potential difference between the adjacent battery cells.

Abstract: According to one embodiment, a power supply device includes a fuel cell, a battery, a switch, and a controller. The fuel cell supplies electric power to an electronic device provided with a built-in battery. The battery is charged with electric power supplied from the fuel cell and supplies electric power to the electronic device. The switch switches the battery between charge mode and discharge mode. The controller controls the switch to switch the battery between the charge mode and the discharge mode. The controller calculates integrated discharge electric power and integrated discharge amount of the battery and, when the integrated discharge electric power reaches predetermined discharge electric power, switches the battery from the discharge mode to the charge mode. The controller calculates integrated charge amount of the battery and, when the integrated charge amount reaches the integrated discharge amount, switches the battery from the charge mode to the discharge mode.

Abstract: A battery protection circuit to protect secondary batteries coupled in parallel, includes an overdischarge detection part provided for each of the secondary batteries and to output an abnormality signal when an overdischarge is detected from a corresponding one of the secondary batteries, an overcurrent detection part provided for each of the secondary batteries and to output an abnormality signal when an overcurrent is detected from a corresponding one of the secondary batteries, and a discharge control part to prohibit a discharge of at least one secondary battery when the abnormality signal is output from at least one of the overdischarge detection part and the overcurrent detection part.

Abstract: A battery system includes a first battery and a second battery connected in parallel and performing charge and discharge. A first relay is switched between an ON state in which the charge and discharge of the first battery are allowed and an OFF state in which the charge and discharge of the first battery are prohibited. A second relay is switched between an ON state in which the charge and discharge of the second battery are allowed and an OFF state in which the charge and discharge of the second battery are prohibited. A controller controls the ON state and the OFF state of each of the first relay and the second relay. The controller also changes the order in which the first relay and the second relay are switched to the ON state, in performing the charge and discharge of the first battery and the second battery.

Abstract: A system and method for directing a user to configure a power device via an alphanumeric user interface is provided. The power device may include data storage storing a plurality of operational parameters. The method includes acts of prompting, during an initial power-up of the power device, a user to enter an indication of quality of power supplied to the power device, receiving the indication via the user interface, determining a first value for each of the plurality of operational parameters of the power device based at least in part on the indication and applying each first value of the plurality of operational parameters to the power device.

Abstract: A battery-cell converter (BCC) management system is disclosed. The BCC system comprises one or more battery-cell converter units that are configured to provide regulated main power output from the outputs of DC/DC converters inside the battery-cell converter units. Each battery-cell converter unit comprises an electrical energy storage cell bank, one or more DC/DC converters, one or more electrical connection devices and a monitor and control module coupled to other components of the battery-cell converter unit. Multiple battery-cell converter units can be stacked in series to increase output voltage. In another embodiment, multiple battery-cell converter units can be connected in parallel to increase output current. Accordingly, the BCC management system disclosed improves battery pack usage efficiencies, increase battery pack useable time per charge, extend battery pack life-time as well as lower battery pack manufacturing cost.

Abstract: A power storage unit is provided which is able to facilitate recalibration and which is able to supply power even while recalibration is being performed. A method for correcting the capacity values of storage batteries, and a power storage system are also provided. In the power storage unit, a control unit turns ON a portion of the switches to connect a portion of the storage batteries to the charge and discharge path for correction, and corrects the capacity value of the portion of storage batteries by charging and discharging the portion while the other switches are turned OFF to disconnect the other storage batteries from the charge and discharge path.

Abstract: The invention provides an energy storage system having storage elements linked for collective charging and discharging. Monitoring circuitry is provided for monitoring each of the storage elements independently. Preferably, the system includes control circuitry configured for controlling the linking of individual storage elements in order to enhance system performance. In preferred embodiments, the system also includes storage elements in an arrangement whereby they may be selectably linked and delinked, in series, parallel, or in one or more series/parallel combination.

Abstract: A method of controlling current in a parallel battery systems includes providing at least two parallel connected batteries, each said battery having an internal resistance and dissipating heat while operating; during operation, measuring at least the temperature and current of each individual battery; and providing instructions to a temperature control system having a temperature control module coupled with each said battery for individually cooling each said battery to adjust temperature of at least one battery in order to maintain the current at a target value.

Abstract: Electrical systems for balancing charging or loading of parallel-arrayed charge accumulators (1, 2), particularly batteries, storage batteries, etc. The systems include circuitry used to supply voltage to a load (7) or to electrically charge the accumulators (1, 2), or both, via connections (3a, 3b, 4a, 4b) at the charge accumulator side and interface connections at the load or charger side. An electrical circuit (10) has at least one DC converter (11) that converts the differential voltage between the matching polarity connections (3a, 4a) at the charge accumulator side, or converts a voltage derived from this differential voltage. Voltage supply devices for loads, or charging devices for charge accumulators, may include circuits of this type.

Abstract: A modular and scalable power source can be used to supplement and/or replace existing sources of power. In some embodiments, a DC source can be used to charge a battery in a host system, provide power as a back-up system, or be a primary source of power. The power source includes a set of battery units and one or more circuits that provide an alternative signal path around the battery units if the battery units are at a particular charge level. Temperature sensors are used to turn off or otherwise adjust the alternative signal paths if the temperatures of the alternative signal paths become too high.

Abstract: Disclosed herein is an energy storage module including a first energy container, a second energy container that is connected to the first energy container in parallel, and a switching control unit that senses the energy containers corresponding to predetermined deterioration conditions among the first and second energy containers to selectively open the energy containers corresponding to deterioration conditions so as to selectively charge/discharge the energy containers, whereby the deterioration can be minimized without stopping the overall energy storage module.

Abstract: Disclosed is an apparatus for controlling the connection of a plurality of battery packs including a switching unit provided on a charge/discharge path of each battery pack to selectively open and close the charge/discharge path, a first control unit provided for each battery pack to determine the state of charge (SOC) of each battery pack and control the opening/closing of the switching unit, and a second control unit to receive the determined SOC of each battery pack from the first control unit, group battery packs having a predetermined range of SOCs, select a group containing a largest number of battery packs, connect the battery packs of the selected group in parallel, charge or discharge the parallel-connected battery packs so that a difference in SOC between the parallel-connected battery packs and the non-connected battery pack falls within a predetermined range, and connect the non-connected battery pack thereto in parallel.

Abstract: Disclosed is a battery balancing circuit for balancing the voltages of a reference battery module and a detachable battery apparatus, which has a load channel, a charging-discharging channel, a MCU and a charging-discharging control circuit. The reference battery module and detachable battery apparatus are connected in parallel. The load channel is connected to the reference battery module. The charging-discharging channel is disconnected from the reference battery module. The load and charging-discharging channels are connected to the detachable battery apparatus respectively through a first and a second switches. When the voltage of the detachable battery apparatus is higher or lower than a threshold value, the MCU controls the first and second switches, such that the detachable battery apparatus is connected to the charging-discharging control circuit through the charging-discharging channel and disconnected from the load channel.