Abstract: According to one embodiment, a power supply apparatus includes a battery assembly, a fuse element, a switch unit, and a control unit. The fuse element is connected between the battery assembly and a load unit driven by being supplied with power from the battery assembly. The switch unit is connected in parallel to the load unit. The control unit causes, when an over voltage of at least one of the battery assembly and the load unit is detected, the switch unit to be in an ON state, provides an over current to flow from the battery assembly to the fuse element, and fusing the fuse element.

Abstract: An apparatus is disclosed that includes a resistance measuring unit operable to determine a solution resistance Rsol and a charge transfer resistance Rct of a battery; and at least one computer-readable non-transitory storage medium comprising code, that, when executed by at least one processor, is operable to provide an estimate of the present value of the battery by: comparing Rsol and Rct to historical deterioration transition information; estimating the number of remaining charge cycles before a discharge capacity lower limit is reached by the battery using the comparison; and estimating the number of remaining charge cycles before a discharge time lower limit is reached by the battery using the comparison. The estimate of the present value of the battery includes the smaller of the number of remaining charge cycles before a discharge capacity lower limit is reached or the number of remaining charge cycles before a discharge time lower limit is reached.

Abstract: A power source device includes an assembled battery having a plurality of secondary battery cells connected in series, and a plurality of discharge circuits connected in parallel with the secondary battery cells, respectively. A charge control circuit performs constant current charging to the assembled battery, and when voltages of one or a plurality of the secondary battery cells out of the plurality of secondary battery cells have reached a prescribed first voltage, drives the discharge circuits connected to the secondary battery cells whose voltage have reached the first voltage to discharge, and performs constant voltage charging to the relevant assemble battery.

Abstract: According to one embodiment, a device includes a power management module to which a power is supplied from an external power source, a power source supply circuit to which a power is supplied from the power management module via a first input terminal, a latch circuit configured to be operated by a power supplied from the power supply circuit or a power supplied via a second input terminal, a circuit configured to output a logic signal that sets a shutdown signal output from the latch circuit to a third input terminal, and a logic communication circuit to which a logic signal is supplied via the third input terminal and which supplies the logic signal to a forth terminal of the larch circuit. The shutdown signal output from the latch circuit is set to an predetermined level when the logic signal is set to a second level from a first level.

Abstract: A battery device includes secondary battery cells, a detector configured to detect respective voltages of the cells, a first circuit configured to output an overvoltage alarm signal for notifying whether each of the voltage values of the cells is an overvoltage equal to or more than a threshold value, a second circuit configured to output a first level shutdown signal to an upper controller when any of the secondary battery cells is judged to be overvoltage by the overvoltage alarm signal, and a third circuit configured to be supplied with the shutdown signal and to control operations of the first circuit and the second circuit. The second circuit assumes the shutdown signal at a second level when making self-diagnosis on the first circuit, and outputs an alarm signal for notifying the third circuit of, when the overvoltage alarm signal noticing an overvoltage is supplied, the overvoltage.

Abstract: Provided is a battery system capable of preventing the voltage that is applied to the voltage detection circuit from exceeding the withstand voltage of the voltage detection circuit when the connection between the cells in the battery module is disconnected, and preventing an overcurrent from flowing in the cell voltage detection circuit and the module. The modules are internally provided with a battery voltage measurement circuit 2 for measuring the voltage of each cell. A reverse voltage protective diode 3 is disposed in the power supply route of the battery voltage measurement circuit 2, and adapted such that the anode thereof is connected to the negative electrode of a drive power source of the voltage measurement circuit and the cathode thereof is connected to the positive electrode of the drive power source of the voltage measurement circuit. A fuse 4 as an overcurrent protective element is provided to the power supply route of the battery voltage measurement circuit 2.

Abstract: A battery pack includes: a plurality of unit batteries each having a rectangular-solid sealed metal unit battery case and two voltage terminals protruding from a terminal surface of the unit battery case; a spacer arranged between two main surfaces of adjacent unit batteries opposing to each other so as to maintain a gap between the main surfaces; and a connection portion which electrically connects the voltage terminals of different unit batteries. The spacer has a plurality of protrusions for supporting the corner portions of the unit battery cases and through holes formed at positions opposing to the main surfaces which can receive expanded portions when the main surfaces of the unit battery cases are expanded by inner pressure of the unit battery cases.

Abstract: According to one embodiment, a communication circuit includes a direct-current converter circuit configured to generate a second power supply potential different from a second reference potential by a predetermined potential, from a first power supply potential, a first receiving circuit configured to receive a binary communication signal, whose one level is at a first reference potential, through a first signal input terminal, by a differential transmission method, a first level shift circuit configured to convert the communication signal received by the first receiving circuit into a binary communication signal, whose one level is at the second reference potential, and the other level is at the second power supply potential, and a first transmission circuit configured to output the binary communication signal converted by the first level shift circuit, through a first signal output terminal, by a differential transmission method.

Abstract: According to one of the embodiment, an assembled battery has a plurality of cells electrically connected in series. A charge amount difference detection circuit detects charge amount difference of the cells. Wherein, while a charging or discharge current is being applied to the cells, the charge amount difference detection circuit detects charge amount differences greater than a charge amount of a reference cell having a minimum charge amount, the charge amount differences of the cells are determined by addition of the charging or discharge currents during a period corresponding to the time differences between the reference cell and the other cells reaching a predetermined specific voltage, discharge switches are controlled by a switch controller, based on the charging amount differences.

Abstract: According to one embodiment, an AC blocking filter is provided between charging/discharging terminals of a storage battery and an inverter that converts a DC output of the storage battery to an AC output. Further, a DC blocking filter is connected to the charging/discharging terminals. An alternating current generation device supplies a warm-up alternating current to the storage battery via the DC blocking filter.

Abstract: According to one embodiment, the power supply management portion includes a timer configured to output an ON signal every time set by the control circuit, an OR circuit configured to receive supply of an output signal from the timer, an external signal supplied from outside, and a switch control signal output from the control circuit, and a switch circuit configured to switch output of the power source voltage from an external power source according to an output signal from the OR circuit, and the control circuit turns on a switch control signal after confirming which of the output signal from the timer or the external signal has turned on the switch circuit and turns off the switch control signal when both of the output signal from the timer and the signal supplied from outside are turned off.

Abstract: According to one embodiment, a secondary battery device includes a first assembled battery including a plurality of secondary battery cells, a second assembled battery including a plurality of secondary battery cells and connected in series to a low-potential terminal of the first assembled battery, a disconnecting module capable of mechanically switching connection between the first assembled battery and the second assembled battery, a voltage measurement circuit configured to measure voltages of the plurality of secondary battery cells of the second assembled battery, a first power source wiring connected between a high-potential terminal of the second assembled battery and the voltage measurement circuit, a second power source wiring connected between a low-potential terminal of the second assembled battery and the voltage measurement circuit, and a filter connected between the first power source wiring and the second power source wiring.

Abstract: A test system to test a battery pack includes a power supply, a high-frequency-voltage application unit, a splitter, a first coupling capacitor, a second coupling capacitor, a ground, and a data logger. The power supply supplies power to a battery management unit of the battery pack. The splitter includes an input terminal, and first and second output terminals. The high-frequency-voltage application unit outputs a high-frequency voltage to the input terminal of the splitter. The first coupling capacitor is provided between the first output terminal and a positive-electrode terminal of the battery pack. The second coupling capacitor is provided between the second output terminal and a negative-electrode terminal of the battery pack. An earth terminal of the high-frequency-voltage application unit and one of power-supply input terminal of the battery pack are connected to the ground. The data logger records data outputted from a data-output terminal of the battery management unit.

Abstract: According to an embodiment, a nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolytic solution. The nonaqueous electrolytic solution includes LiBF4 as an electrolyte and a phosphate-containing nonaqueous solvent. The negative electrode includes a lithium titanium oxide or a lithium titanium composite oxide as a negative electrode active material.

Abstract: A battery module comprising: a plurality of battery cells of substantially rectangular parallelepiped shape; a first casing having a first holding section 42 that holds one end of the plurality of battery cells; a second casing having a second holding section 52 that holds the other end of the plurality of battery cells; and a plurality of insulating members arranged between the battery cells; wherein the battery cells are arranged lined up so that adjacent main walls thereof extending between the one ends and the other ends face each other and the plurality of insulating members are arranged in mutually separated fashion between the main walls.

Abstract: In a battery system, battery modules (3a, 3b) connected to each other in series respectively include: one or more single cells (3a1 to 3an, 3b1 to 3b-n) connected to one another in any one of series, parallel, and series-parallel; cell voltage switches (7a, 7b) for detecting voltages respectively of the one or more single cells; module monitoring control units (9a, 9b) each for monitoring the detected voltages respectively of the one or more signal cells; and communications level converter circuits (14a, 14b). The battery system includes a master unit (8a) for receiving information on the voltages respectively of the one or more single cells from the module monitoring control units via the communications level converter circuits. One of the communications level converter circuits includes a switch element (Q32) for transmitting a signal of a low-potential battery module to a high-potential battery module.

Abstract: According to one embodiment, a secondary battery device includes a first assembled battery including a plurality of secondary battery cells, a second assembled battery including a plurality of secondary battery cells and connected in series to a low-potential terminal of the first assembled battery, a disconnecting module capable of mechanically switching connection between the first assembled battery and the second assembled battery, a voltage measurement circuit configured to measure voltages of the plurality of secondary battery cells of the second assembled battery, a first power source wiring connected between a high-potential terminal of the second assembled battery and the voltage measurement circuit, a second power source wiring connected between a low-potential terminal of the second assembled battery and the voltage measurement circuit, and a filter connected between the first power source wiring and the second power source wiring.

Abstract: An apparatus is disclosed that includes a resistance measuring unit operable to determine a solution resistance Rsol and a charge transfer resistance Rct of a battery; and at least one computer-readable non-transitory storage medium comprising code, that, when executed by at least one processor, is operable to provide an estimate of the present value of the battery by: comparing Rsol and Rct to historical deterioration transition information; estimating the number of remaining charge cycles before a discharge capacity lower limit is reached by the battery using the comparison; and estimating the number of remaining charge cycles before a discharge time lower limit is reached by the battery using the comparison. The estimate of the present value of the battery includes the smaller of the number of remaining charge cycles before a discharge capacity lower limit is reached or the number of remaining charge cycles before a discharge time lower limit is reached.

Abstract: Provided is a battery system capable of preventing the voltage that is applied to the voltage detection circuit from exceeding the withstand voltage of the voltage detection circuit when the connection between the cells in the battery module is disconnected, and preventing an overcurrent from flowing in the cell voltage detection circuit and the module. The modules are internally provided with a battery voltage measurement circuit 2 for measuring the voltage of each cell. A reverse voltage protective diode 3 is disposed in the power supply route of the battery voltage measurement circuit 2, and adapted such that the anode thereof is connected to the negative electrode of a drive power source of the voltage measurement circuit and the cathode thereof is connected to the positive electrode of the drive power source of the voltage measurement circuit. A fuse 4 as an overcurrent protective element is provided to the power supply route of the battery voltage measurement circuit 2.

Abstract: A battery device includes secondary battery cells, a detector configured to detect respective voltages of the cells, a first circuit configured to output an overvoltage alarm signal for notifying whether each of the voltage values of the cells is an overvoltage equal to or more than a threshold. value, a second circuit configured to output a first level shutdown signal to an upper controller when any of the secondary battery cells is judged to be overvoltage by the overvoltage alarm signal, and a third circuit configured to be supplied with the shutdown signal and to control operations of the first circuit and the second circuit. The second circuit assumes the shutdown signal at a second level when making self-diagnosis on the first circuit, and outputs an alarm signal for notifying the third circuit of, when the overvoltage alarm signal noticing an overvoltage is supplied, the overvoltage.