US 12,444,793 B2
Secondary battery and secondary battery case
Min Kyu Min, Daejeon (KR); Hyun Beom Kim, Daejeon (KR); Dae Wook Kim, Daejeon (KR); Sung Yun Kwak, Daejeon (KR); and Jeong Min Ha, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/767,548
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Dec. 17, 2020, PCT No. PCT/KR2020/018573
§ 371(c)(1), (2) Date Apr. 8, 2022,
PCT Pub. No. WO2021/125842, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10-2019-0169262 (KR), filed on Dec. 17, 2019; and application No. 10-2020-0176713 (KR), filed on Dec. 16, 2020.
Prior Publication US 2023/0216113 A1, Jul. 6, 2023
Int. Cl. H01M 50/136 (2021.01); H01M 50/105 (2021.01)
CPC H01M 50/136 (2021.01) [H01M 50/105 (2021.01)] 17 Claims
OG exemplary drawing
 
1. A case for a secondary battery comprising:
a first recess part having a first recessed shape;
a second recess part opposite the first recess part and having a second recessed shape; and
a connection part provided between the first recess part and the second recess part to connect the first recess part to the second recess part,
wherein, when the case is in an unfolded state, the connection part comprises:
a first connection surface inclined in a first direction from one end of the first recess part; and
a second connection surface inclined in the first direction from one end of the second recess part,
wherein, when the case is in the unfolded state, the case is bent in a V shape on an area on which a first circumferential part and a second circumferential part meet each other and the case is inhibited from opening beyond the V shape by the area without an external force so that a first recessed space defined by the first recess part and a second recessed space defined by the second recess part face each other.