US 12,394,853 B2
Power supply device, and electric vehicle and electrical storage device each equipped with same
Hiroshi Takata, Hyogo (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 17/633,233
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Jul. 20, 2020, PCT No. PCT/JP2020/028030
§ 371(c)(1), (2) Date Feb. 7, 2022,
PCT Pub. No. WO2021/033476, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 2019-152167 (JP), filed on Aug. 22, 2019.
Prior Publication US 2022/0285778 A1, Sep. 8, 2022
Int. Cl. H01M 50/262 (2021.01); H01M 50/209 (2021.01); H01M 50/238 (2021.01); H01M 50/249 (2021.01)
CPC H01M 50/262 (2021.01) [H01M 50/209 (2021.01); H01M 50/238 (2021.01); H01M 50/249 (2021.01); H01M 2220/20 (2013.01)] 13 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 and including a constant cell thickness, the plurality of battery cells being configured to be charged;
a pair of end plates for covering both side end surfaces of a battery stack in which the plurality of battery cells are stacked; and
bind bars that are disposed on opposite side surfaces of the battery stack and coupled to the pair of the end plates, wherein
the bind bars each include
a pressing piece for pressing an upper surface of each of adjacent battery cells adjacent to each other among the plurality of battery cells, and
an elastomer molding disposed between the pressing piece and the upper surface of the each of the adjacent battery cells, and
the pressing piece elastically presses the upper surface of the each of the adjacent battery cells with the elastomer molding,
the power supply device further comprising:
a plurality of the elastomer moldings each being the elastomer molding,
wherein the plurality of the elastomer moldings are spaced apart from each other in a stacking direction in which the plurality of battery cells are stacked,
wherein the elastomer molding includes a rubbery pressing part in a columnar shape or in a plate shape protruding toward the upper surface of the each of the adjacent battery cells, and
wherein a plurality of rubbery pressing parts being the rubbery pressing part, the elastomer molding includes the plurality of rubbery pressing parts different in protrusion height.