US 12,191,521 B2
Separator for insulating adjacent battery cells, and power source device provided with same
Naotake Yoshida, Hyogo (JP); Nao Takeda, Hyogo (JP); and Kazuhiro Harazuka, Hyogo (JP)
Assigned to SANYO Electric Co., Ltd., Osaka (JP)
Appl. No. 17/414,749
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Sep. 27, 2019, PCT No. PCT/JP2019/038296
§ 371(c)(1), (2) Date Jun. 16, 2021,
PCT Pub. No. WO2020/137062, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-244432 (JP), filed on Dec. 27, 2018.
Prior Publication US 2022/0077542 A1, Mar. 10, 2022
Int. Cl. H01M 50/44 (2021.01); H01M 10/647 (2014.01); H01M 10/658 (2014.01); H01M 50/209 (2021.01); H01M 50/249 (2021.01); H01M 50/291 (2021.01); H01M 50/293 (2021.01); H01M 50/414 (2021.01)
CPC H01M 50/44 (2021.01) [H01M 10/647 (2015.04); H01M 10/658 (2015.04); H01M 50/209 (2021.01); H01M 50/249 (2021.01); H01M 50/291 (2021.01); H01M 50/293 (2021.01); H01M 50/414 (2021.01)] 11 Claims
OG exemplary drawing
 
1. A separator that insulates adjacent battery cells, the separator comprising:
a heat insulation sheet including a fiber material and a heat insulation material including higher heat insulating properties than heat insulating properties of the fiber material; and
a formed member including a higher shape stability than a shape stability of the heat insulation sheet,
wherein the separator includes a shape including at least one gap extending in one direction between the separator and each of the adjacent battery cells,
wherein said shape is formed of a combination of the heat insulation sheet and the formed member superimposed on each other while overlapping the each of the adjacent battery cells, and
wherein an entirety of the separator is sandwiched between the adjacent battery cells in a stacking direction of the adjacent battery cells.