US 11,936,062 B2
Battery pack
Satoshi Kawakami, Hyogo (JP); and Masaya Nakano, Osaka (JP)
Assigned to PANASONIC ENERGY CO., LTD., Osaka (JP)
Appl. No. 17/311,711
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Dec. 2, 2019, PCT No. PCT/JP2019/047083
§ 371(c)(1), (2) Date Jun. 8, 2021,
PCT Pub. No. WO2020/129596, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-240083 (JP), filed on Dec. 21, 2018.
Prior Publication US 2022/0029240 A1, Jan. 27, 2022
Int. Cl. H01M 50/367 (2021.01); H01M 50/213 (2021.01); H01M 50/227 (2021.01); H01M 50/231 (2021.01); H01M 50/262 (2021.01)
CPC H01M 50/367 (2021.01) [H01M 50/213 (2021.01); H01M 50/227 (2021.01); H01M 50/231 (2021.01); H01M 50/262 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A battery pack comprising:
a battery cell having an exhaust valve that opens when internal pressure of the battery cell exceeds set pressure;
a case that houses the battery cell,
the case including multiple case units each molded with plastic,
the multiple case units being coupled to each other at mating surfaces of the multiple case units to dispose the battery cell inside the case; and
a heat-resistant material disposed inside the mating surfaces, the heat-resistant material blocking a gap between the mating surfaces.