US 12,136,719 B2
Power supply device, electric vehicle comprising said power supply device, and power storage device
Hiroshi Takata, Hyogo (JP); and Hiroyuki Takahashi, Hyogo (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 17/632,060
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Jul. 20, 2020, PCT No. PCT/JP2020/028029
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/024776, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 2019-143428 (JP), filed on Aug. 3, 2019.
Prior Publication US 2022/0278387 A1, Sep. 1, 2022
Int. Cl. H01M 10/6551 (2014.01); H01M 10/04 (2006.01); H01M 10/613 (2014.01); H01M 10/651 (2014.01); H01M 10/6554 (2014.01); H01M 10/625 (2014.01)
CPC H01M 10/6551 (2015.04) [H01M 10/0481 (2013.01); H01M 10/613 (2015.04); H01M 10/651 (2015.04); H01M 10/6554 (2015.04); H01M 10/625 (2015.04)] 13 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a battery stack including a plurality of battery cells that are layered;
a pair of end plates disposed at both ends of the battery stack;
a binding bar configured to connect the pair of end plates;
a lower plate being contact with a heat radiation surface of each of the plurality of battery cells, the lower plate allowing transfer of heat energy generated by the plurality of battery cells through the lower plate; and
a heat conductive sheet being stacked on a surface of the lower plate, the heat conductive sheet including plasticity, wherein
the lower plate includes a contact surface that is contact with the heat conductive sheet, the contact surface including a regular uneven surface,
the heat conductive sheet is stacked on the regular uneven surface in a pressed state,
a heat conductive surface of the heat conductive sheet is deformed into a concave shape along the regular uneven surface, and
the heat conductive sheet and the lower plate are stacked on each other in a contact state.