US 12,224,415 B2
Power supply device, electric vehicle using same, and power storage device
Hiroyuki Takahashi, Hyogo (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 17/630,947
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Jul. 20, 2020, PCT No. PCT/JP2020/028024
§ 371(c)(1), (2) Date Jan. 28, 2022,
PCT Pub. No. WO2021/024772, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 2019-145726 (JP), filed on Aug. 7, 2019.
Prior Publication US 2022/0278384 A1, Sep. 1, 2022
Int. Cl. H01M 10/613 (2014.01); B60K 6/28 (2007.10); B60L 50/64 (2019.01); H01M 10/04 (2006.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H01M 10/625 (2014.01); H01M 10/647 (2014.01); H01M 10/653 (2014.01); H01M 10/6551 (2014.01); H01M 10/6554 (2014.01); H01M 10/6556 (2014.01); H01M 10/6569 (2014.01); H02J 7/00 (2006.01); H02J 7/35 (2006.01); H02P 27/06 (2006.01)
CPC H01M 10/613 (2015.04) [B60K 6/28 (2013.01); B60L 50/64 (2019.02); H01M 10/0481 (2013.01); H01M 10/4257 (2013.01); H01M 10/441 (2013.01); H01M 10/625 (2015.04); H01M 10/647 (2015.04); H01M 10/653 (2015.04); H01M 10/6551 (2015.04); H01M 10/6554 (2015.04); H01M 10/6556 (2015.04); H01M 10/6569 (2015.04); B60Y 2200/91 (2013.01); B60Y 2200/92 (2013.01); B60Y 2400/112 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01); H02J 7/0013 (2013.01); H02J 7/35 (2013.01); H02P 27/06 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a plurality of battery cells each including an outer covering can in a prismatic shape;
a pair of end plates each including a pressing surface that presses a corresponding one of both side end surfaces of a battery stack including the plurality of battery cells stacked;
a plurality of fastening members each including a plate shape extended in a stacking direction of the plurality of battery cells, the plurality of fastening members each being disposed on a corresponding one of opposing side surfaces of the battery stack to fasten the end plates to each other;
a thermal plate for placing the battery stack close to an upper surface of the thermal plate and dissipating heat from the battery stack; and
a heat transfer sheet interposed between an upper surface of the thermal plate and a lower surface of the battery stack to bring the thermal plate and the battery stack into a thermally coupled state,
wherein each of the end plates includes a part of a lower surface facing the heat transfer sheet, the part being disposed at the same height as or above an upper surface of the heat transfer sheet, and
the end plates each includes each of spacer parts protruding by a thickness of the heat transfer sheet on a corresponding one of both sides of the pressing surface.