US 11,817,593 B2
Power supply device and vehicle provided with power supply device
Shinobu Terauchi, Hyogo (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 16/981,724
Filed by SANYO Electric Co., Ltd., Daito (JP)
PCT Filed Nov. 16, 2018, PCT No. PCT/JP2018/042378
§ 371(c)(1), (2) Date Sep. 17, 2020,
PCT Pub. No. WO2019/187314, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 2018-069572 (JP), filed on Mar. 30, 2018.
Prior Publication US 2021/0376418 A1, Dec. 2, 2021
Int. Cl. H01M 50/238 (2021.01); H01M 50/209 (2021.01); H01M 50/242 (2021.01); H01M 50/264 (2021.01); H01M 50/224 (2021.01); B60L 50/64 (2019.01); H01M 50/249 (2021.01); H01M 50/291 (2021.01)
CPC H01M 50/238 (2021.01) [B60L 50/64 (2019.02); H01M 50/209 (2021.01); H01M 50/224 (2021.01); H01M 50/242 (2021.01); H01M 50/249 (2021.01); H01M 50/264 (2021.01); H01M 50/291 (2021.01); H01M 2220/20 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a plurality of secondary battery cells;
a pair of end plates that are disposed on end surfaces of a battery stack obtained by connecting the plurality of secondary battery cells, and sandwich the battery stack; and
a fastening member for fixing the pair of end plates to each other,
wherein each of the pair of end plates includes
a first band body protruding from a main surface of each of the pair of end plates on an upper end side of each of the pair of end plates, and
a second band body protruding from the main surface of each of the pair of end plates in a middle of each of the pair of end plates, and
a space is formed in the second band body between the second band body and the main surface of each of the pair of end plates,
wherein the first band body is configured to exhibit a first rigidity, and the second band body is configured to exhibit a second rigidity lower than the first rigidity, wherein the first band body overlaps the end surfaces of the battery stack in a stacking direction of the plurality of secondary battery cells,
wherein the first band body and the second band body are elongated in a first direction, and
the space formed in the second band body comprises a through hole extending through the second band body in a second direction perpendicular to the first direction and to the stacking direction, and
wherein each of the pair of end plates including the first band body and the second band body is a monolithically molded piece of material.