US 12,315,948 B2
Power supply device and vehicle and power storage device having same
Naotake Yoshida, Hyogo (JP); Eri Kohira, Hyogo (JP); and Kazuhiro Harazuka, Hyogo (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 17/906,352
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Dec. 22, 2020, PCT No. PCT/JP2020/047899
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/199535, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-064062 (JP), filed on Mar. 31, 2020.
Prior Publication US 2023/0140244 A1, May 4, 2023
Int. Cl. H01M 50/24 (2021.01); B60K 1/04 (2019.01); B60L 53/60 (2019.01); H01M 50/209 (2021.01); H01M 50/264 (2021.01)
CPC H01M 50/24 (2021.01) [B60K 1/04 (2013.01); B60L 53/60 (2019.02); H01M 50/209 (2021.01); H01M 50/264 (2021.01); H01M 2220/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a battery stack body including a plurality of battery cells, the plurality of battery cells being stacked, each of the plurality of battery cells including an electrode terminal disposed on a top surface of the each of the plurality of battery cells;
a pair of end plates that cover both end surfaces in a stacking direction of the battery stack;
a fastening member that fastens the pair of end plates to each other; and
an insulating member interposed between a side surface of the battery stack and the fastening member,
wherein the insulating member includes a groove extending in the stacking direction of the battery stack on a surface facing the battery stack,
the insulating member includes a flat plate covering the side surface of the battery stack and a covering part covering a bottom surface of the battery stack, and the flat plate and the covering part extend in the stacking direction of the battery stack,
the groove is provided on a surface of the covering part facing the battery stack, and
the covering part does not extend across an entire width of the battery stack in a direction perpendicular to the stacking direction.