US 12,444,804 B2
Battery module, and electric vehicle and power storage device equipped with battery module
Junya Yano, Hyogo (JP); Tomonori Kunimitsu, Hyogo (JP); Masato Nakayama, Hyogo (JP); and Taisuke Hamada, Hyogo (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 17/906,355
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Nov. 19, 2020, PCT No. PCT/JP2020/043107
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/199489, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-061480 (JP), filed on Mar. 30, 2020.
Prior Publication US 2023/0143369 A1, May 11, 2023
Int. Cl. B60K 1/04 (2019.01); B60L 53/60 (2019.01); H01M 10/48 (2006.01); H01M 50/209 (2021.01); H01M 50/284 (2021.01); H01M 50/298 (2021.01); H01M 50/512 (2021.01)
CPC H01M 50/284 (2021.01) [B60L 53/60 (2019.02); H01M 10/482 (2013.01); H01M 50/209 (2021.01); H01M 50/298 (2021.01); H01M 50/512 (2021.01); H01M 2220/20 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A battery module comprising:
a battery stack including a plurality of battery cells stacked;
a pair of end plates disposed at both ends in a stacking direction of the battery stack;
a binding bar connecting the end plates;
an electronic circuit block including a voltage detection circuit that detects a voltage of each of the plurality of battery cells; and
a plurality of voltage detection lines connecting a positive electrode terminal and a negative electrode terminal of the each of the plurality of battery cells to the electronic circuit block,
wherein
the each of the plurality of battery cells includes a terminal surface arranging the positive electrode terminal and the negative electrode terminal at opposite ends,
the battery stack is obtained by stacking the plurality of battery cells with the terminal surface on the same plane,
the electronic circuit block is disposed on an outer surface of each of the end plates, and includes a circuit board on which the voltage detection circuit is mounted,
the circuit board fixes one connector linearly arranging a plurality of connecting terminals connecting the plurality of voltage detection lines,
the voltage detection circuit includes a plurality of input terminals arranged in a linear manner and each including adjacent input terminals as input terminals of a cell voltage of the each of the plurality of battery cells,
in the circuit board, the plurality of connecting terminals and the plurality of input terminals are disposed at opposing positions,
the plurality of connecting terminals and the plurality of input terminals at the opposing positions are connected by a plurality of rows of a plurality of connection lines, and
the cell voltage of the each of the plurality of battery cells is input to a corresponding one of the plurality of connecting terminals connected to a corresponding one of the plurality of input terminals by a corresponding one of the plurality of connection lines.