Abstract: A voltage equalization device of a power storage device provided with battery packs in which a plurality of secondary cells are connected, power converters provided in association with the battery packs, and controllers that control the power converters, and in which the battery packs are connected in parallel via the individual power converters includes a decision portion and a voltage-adjusting portion. The decision portion obtains battery-pack information regarding the states of charge/discharge of the individual battery packs and decides, for each battery pack, whether or not to perform voltage adjustment on the basis of the battery-pack information. When the decision portion decides that the voltage adjustment is to be performed, the voltage-adjusting portion generates offset instructions for adjusting the states of charge/discharge and outputs the offset instructions to the controllers of the power converters associated with the battery packs.

Abstract: A secondary cell control system includes a plurality of cells; a charging circuit section and a discharging circuit section. The charging circuit section charges cells selected from among said plurality of cells, and the discharging circuit section discharges cells selected from among said plurality of cells.

Abstract: A battery apparatus includes a row battery group including a plurality of series-connected row batteries including one or more battery cells; a plurality of battery management sections, corresponding to the individual row batteries, for managing the battery statuses of the corresponding row batteries; a central management section for granting unique identification information to the individual battery management sections and acquiring information about the battery statuses of the row batteries from the respective battery management sections for management; second communication lines with which the plurality of battery management sections are daisy-chained; a first communication line with which, of the plurality of battery management sections, the battery management section located at one end is connected to the central management section; and a plurality of connection switching sections, provided in the individual second communication lines between the battery management sections, for switching the connection

Abstract: It is an object to provide a battery system whose life can be extended. A cell pack having at least one lithium secondary battery that uses a manganese-based cathode material and a control unit that controls charging and discharging of the cell pack are provided, and the control unit controls charging and discharging within a low-degradation voltage range that is set on the basis of a target cell degradation rate.

Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.

Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.

Abstract: There is disclosed a battery including: a laminated electrode body (3) in which a positive electrode plate (6) and a negative electrode plate (5) are laminated through a separator (4); a battery container (18) that accommodates the laminated electrode body (3); an electrolytic solution that is accommodated in the battery container (18); and insulating sheets (7, 8, and 9) that is configured to serve as an insertion guide during accommodation of the laminated electrode body (3) in the battery container (18), and is disposed between the laminated electrode body (3) that is accommodated and the battery container (18), and has openings (14 and 15) formed to be adjacent to the bottom of the battery container (18) in a state where the insulating sheet is disposed therebetween. Convection of the electrolytic solution is promoted by the openings (14 and 15).

Abstract: An object is to improve safety. Provided is a power storage system including a battery apparatus 1; a power converter 2 provided between the battery apparatus 1 and a load 3 and that can control power supplied from the battery apparatus 1 to the load 3; and a battery monitoring circuit 4 that detects an abnormality in the battery apparatus 1. When an abnormality in the battery apparatus 1 is detected by the battery monitoring circuit 4, the power converter 2 supplies power stored in the battery apparatus 1 to the load 3 or to an internally provided internal load at or below a current value or power value that is set in advance, or alternatively, at a current value or power value that the load 3 demands, within a range that does not exceed an upper limit that is set in advance.

Abstract: An assembled battery includes: a plurality of electrical cells that includes a battery body and an electrode terminal protruding from the battery body; and a terminal connection member that connects a pair of electrode terminals between two of the plurality of electrical cells, wherein the terminal connection member includes: a pair of electrode sockets each allowing the electrode terminal to be inserted thereinto, and a conductor electrically connecting the pair of electrode sockets to each other, and wherein each electrode socket includes: an opposite conductive wall extending from the conductor along the electrode terminal and facing the electrode terminal, and an elastic portion provided at a position facing the opposite conductive wall toward the electrode terminal and pressing the electrode terminal to the opposite conductive wall.

Abstract: A voltage equalization device of a power storage device provided with battery packs in which a plurality of secondary cells are connected, power converters provided in association with the battery packs, and controllers that control the power converters, and in which the battery packs are connected in parallel via the individual power converters includes a decision portion and a voltage-adjusting portion. The decision portion obtains battery-pack information regarding the states of charge/discharge of the individual battery packs and decides, for each battery pack, whether or not to perform voltage adjustment on the basis of the battery-pack information. When the decision portion decides that the voltage adjustment is to be performed, the voltage-adjusting portion generates offset instructions for adjusting the states of charge/discharge and outputs the offset instructions to the controllers of the power converters associated with the battery packs.

Abstract: A battery apparatus includes a row battery group including a plurality of series-connected row batteries including one or more battery cells; a plurality of battery management sections, corresponding to the individual row batteries, for managing the battery statuses of the corresponding row batteries; a central management section for granting unique identification information to the individual battery management sections and acquiring information about the battery statuses of the row batteries from the respective battery management sections for management; second communication lines with which the plurality of battery management sections are daisy-chained; a first communication line with which, of the plurality of battery management sections, the battery management section located at one end is connected to the central management section; and a plurality of connection switching sections, provided in the individual second communication lines between the battery management sections, for switching the connection

Abstract: Safety is ensured even when installed in mobile objects such as electric vehicles, deep-sea explorers, and so on. A battery module (10) provided with a plurality of battery packs (13) and a unit battery container (14) that houses these battery packs (13), wherein the unit battery container (14) includes a top-half housing (18), which is a lid, and a bottom-half housing (19) where the battery packs (13) are mounted, and wherein through-holes are formed in the bottom-half housing (19) so as to penetrate in the plate-thickness direction thereof at positions that face center portions of lower surfaces of the individual battery packs (13); branch pipes (23) are individually connected to the individual through-holes; these branch pipes (23) are connected to a single main pipe (25) that is provided with a liquid-leakage detecting sensor (24) at one end thereof; and the liquid-leakage detecting sensor (24) is connected to a liquid-leakage detecting device (27) via a signal cable (26).

Abstract: A secondary cell control system includes a plurality of cells; a charging circuit section and a discharging circuit section. The charging circuit section charges cells selected from among said plurality of cells, and the discharging circuit section discharges cells selected from among said plurality of cells.

Abstract: A bus bar for secondary battery is provided to electrically connect a plurality of secondary batteries in high reliability. The bus bar includes a plate section which is electrically conductive, opening sections which are provided for said plate section and in which convex electrode terminals of secondary batteries are inserted, respectively; and first slit sections formed to extend ends of the plate section from said opening sections, respectively. A diameter of said opening section is smaller than a diameter of said electrode terminal such that the inserted electrode terminal is fastened.

Abstract: In order to identify whether each of the cells in a storage battery system is available, the storage battery system is equipped with secondary cell packs, information storage parts which are respectively installed to the secondary cell packs to store cell information on the respective secondary cell packs, and monitor device which judges whether loading to the storage battery system is possible according to the cell information stored in the information storage part.

Abstract: A secondary battery mounting vehicle and a gas treatment apparatus of a secondary battery is provided in which even if one of secondary battery modules generates heat, transfer of heat to another secondary battery can be prevented. The secondary battery mounting vehicle includes: a vehicle body having an exhaust vent; a first duct provided in the vehicle body and configured to communicate the exhaust vent and each of spouts when a plurality of secondary battery modules having the spouts from each of which a gas is spouted is mounted; a second duct provided in the vehicle body to communicate with an outside of the vehicle body; and an air flow generating mechanism configured to generate an air flow in the second duct in response to a gas flow in the first duct.

Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.

Abstract: It is an object to provide a battery system whose life can be extended. A cell pack having at least one lithium secondary battery that uses a manganese-based cathode material and a control unit that controls charging and discharging of the cell pack are provided, and the control unit controls charging and discharging within a low-degradation voltage range that is set on the basis of a target cell degradation rate.

Abstract: Disclosed is a cell container offering improved vibration resistance and improved shock resistance as well as maintaining the battery performance and ensuring the reliability. Specifically disclosed is a cell container comprising: an insulative case (31) in which a plurality of unit cells are placed side by side; insulative wall portions (34) for partitioning between the plurality of unit cells; and support projections (35) projecting from at least either one of the case (31) or the wall portions (34) toward the unit cells to support the unit cells.

Abstract: An object is to improve safety. Provided is a power storage system including a battery apparatus 1; a power converter 2 provided between the battery apparatus 1 and a load 3 and that can control power supplied from the battery apparatus 1 to the load 3; and a battery monitoring circuit 4 that detects an abnormality in the battery apparatus 1. When an abnormality in the battery apparatus 1 is detected by the battery monitoring circuit 4, the power converter 2 supplies power stored in the battery apparatus 1 to the load 3 or to an internally provided internal load at or below a current value or power value that is set in advance, or alternatively, at a current value or power value that the load 3 demands, within a range that does not exceed an upper limit that is set in advance.