Abstract: In a battery system, a battery module includes a plurality of cells. A management unit manages charging-discharging of the battery module and a temperature inside the battery module. The management unit estimates a maximum temperature of an inside of a cell in the battery module based on a measured temperature in the battery module, and controls, during charging-discharging of the battery module, a charging-discharging current of the battery module and/or cooling of the battery module in such a way that the estimated maximum temperature does not exceed an upper limit temperature.

Abstract: A battery module includes a battery assembly and a thermally-conductive member to hold or support battery assembly. The battery assembly has a plurality of first batteries and a plurality of second batteries that are alternately stacked. The thermally-conductive member includes a first component and a second component that are each disposed along a stacking direction of the batteries. The first component has a heat resistance to the second batteries higher than to the first batteries. The second component has a heat resistance to the first batteries higher than to the second batteries.

Abstract: A battery module includes a plurality of battery blocks arranged in an X direction and thermal insulating boards that are each disposed between the battery blocks adjacent to each other in the X direction. The thermal insulating boards have a thermal insulating property. Each battery block includes a plurality of cylindrical batteries closely arranged in two or more rows in a staggered formation, with central axes of the cylindrical batteries being parallel to each other, and a block case entirely surrounding a periphery of a battery unit made up of the plurality of the cylindrical batteries so that the plurality of cylindrical batteries stays closely arranged.

Abstract: In a battery system, a battery module includes a plurality of cells. A management unit manages charging-discharging of the battery module and a temperature inside the battery module. The management unit estimates a maximum temperature of an inside of a cell in the battery module based on a measured temperature in the battery module, and controls, during charging-discharging of the battery module, a charging-discharging current of the battery module and/or cooling of the battery module in such a way that the estimated maximum temperature does not exceed an upper limit temperature.

Abstract: A battery module has a plurality of battery cells each including a cell case and a battery element contained in the cell case. The battery module includes a lead to electrically connect a terminal of each of the battery cells to a current collector and a heat shutoff mechanism to break electrical connection between the terminal and the current collector by heat from the cell case when the cell case reaches a predetermined temperature or higher.

Abstract: A battery pack includes: a cell group including a plurality of cylindrical cells that are arranged in a manner of log pile in contact with each other; and a metal frame that extends along the periphery of the cell group and surrounds the cell group. The cells located at the corners of the cell group that has a substantially rectangular shape when viewed from an end surface side in the axial direction of the cells, are in contact with the metal frame.

Abstract: A battery module has a plurality of battery cells each including a cell case and a battery element contained in the cell case. The battery module includes a lead to electrically connect a terminal of each of the battery cells to a current collector and a heat shutoff mechanism to break electrical connection between the terminal and the current collector by heat from the cell case when the cell case reaches a predetermined temperature or higher.

Abstract: A battery module includes a battery assembly and a thermally-conductive member to hold or support battery assembly. The battery assembly has a plurality of first batteries and a plurality of second batteries that are alternately stacked. The thermally-conductive member includes a first component and a second component that are each disposed along a stacking direction of the batteries. The first component has a heat resistance to the second batteries higher than to the first batteries. The second component has a heat resistance to the first batteries higher than to the second batteries.

Abstract: A battery module includes a plurality of battery blocks arranged in an X direction and thermal insulating boards that are each disposed between the battery blocks adjacent to each other in the X direction. The thermal insulating boards have a thermal insulating property. Each battery block includes a plurality of cylindrical batteries closely arranged in two or more rows in a staggered formation, with central axes of the cylindrical batteries being parallel to each other, and a block case entirely surrounding a periphery of a battery unit made up of the plurality of the cylindrical batteries so that the plurality of cylindrical batteries stays closely arranged.

Abstract: A battery pack includes: a cell group including a plurality of cylindrical cells that are arranged in a manner of log pile in contact with each other; and a metal frame that extends along the periphery of the cell group and surrounds the cell group. The cells located at the corners of the cell group that has a substantially rectangular shape when viewed from an end surface side in the axial direction of the cells, are in contact with the metal frame.

Abstract: To provide an assembled cell in which problems such as the fast deterioration of only some unit cells positioned in a middle part are solved by realizing smooth heat dissipation from the middle part of the cell even if an outer member is made of a flexible material. A first heat transfer member 6 including bag members 6a made of polycarbonate and filled with silicone gel is provided between a housing 2 and a unit cell assembly 5 in which a plurality of unit cells 10 are stacked, and in a middle part in a direction of stacking of the unit cells 10. The unit cells 10 are each provided with an outer member 18 made of aluminum laminate film.

Abstract: The method of controlling a power generator generating electric power using renewable energy and a battery storing electric power generated by the power generator, comprising: acquiring data on an amount of electric power generated by the power generator at predetermined time intervals over a sampling period, the data being acquired as electric signals; computing a target output value for the electric power to be supplied to an electric power transmission system based on the data on the amount of electric power generated by the power generator; supplying to the electric power transmission system electric power equal to the target output value from at least one of the power generator and the battery; determining a fading condition of the battery; and varying the sampling period in accordance with the fading condition of the battery.

Abstract: A method of controlling a battery storing electric power generated by a power generator generating electric power using renewable energy, comprising: computing a output value for the electric power to be supplied to an electric power transmission system based on a predetermined maximum charge rate of the battery, and a predetermined maximum discharge rate for the battery; and supplying to the electric power transmission system with electric power corresponding to the output value from at least one of the power generator and the battery.

Abstract: A battery module (10) has heat absorbers (41) each disposed in an internal space of each of connection portions of the positive and negative electrode terminals (11, 12) so as to be in contact with the connection portion, and wherein at least one of the heat absorbers (41) located closer to a central portion of a multi-cell assembly with respect to the cell stacking direction has a greater volume than at least one of the heat absorbers (41) located closer to a periphery of the multi-cell assembly, and a radiation sheet (42) disposed on a side face of the multi-cell assembly (1P), wherein the radiation sheet (42) covers a current collector-side edge in a side face of the multi-cell assembly (1P) substantially entirely from one end to another end, and the radiation sheet (42) has a tapered shape such as to gradually converge from the current collector-side edge to the opposite side edge toward a central portion of the multi-cell assembly (1P) with respect to a cell stacking direction.

Abstract: A plurality of positive electrode plates (1) and a plurality of negative electrode plates are alternately stacked with separators interposed between the positive and negative electrodes. Positive electrode leads (11) and negative electrode leads extending outward from the respective electrode plates are respectively stacked on and joined to a positive electrode current collector terminal and a negative electrode current collector terminal to form a stack type battery. An incision (35) is formed in the positive electrode lead (11) so that a current (C11) passing through the lead (11) is branched into a plurality (two) of paths (D1, D2) by the incision (35), and the maximum current density of one (D1) of the plurality of paths (D1, D2) is equal to or greater 1.5 times of the maximum current density of the other path (D2).