US 12,230,816 B2
Secondary battery case, and secondary battery
Hyun Beom Kim, Daejeon (KR); Jun Kyu Park, Daejeon (KR); Jeong Min Ha, Daejeon (KR); Gi Man Kim, Daejeon (KR); and Hyun Chul Ha, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 16/973,159
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Feb. 27, 2020, PCT No. PCT/KR2020/002813
§ 371(c)(1), (2) Date Dec. 8, 2020,
PCT Pub. No. WO2020/180052, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 10-2019-0024845 (KR), filed on Mar. 4, 2019.
Prior Publication US 2021/0257695 A1, Aug. 19, 2021
Int. Cl. H01M 50/186 (2021.01); H01M 50/136 (2021.01); H01M 50/15 (2021.01); H01M 50/238 (2021.01); H01M 50/105 (2021.01)
CPC H01M 50/186 (2021.01) [H01M 50/136 (2021.01); H01M 50/238 (2021.01); H01M 50/105 (2021.01)] 19 Claims
OG exemplary drawing
 
1. A secondary battery case configured to accommodate an electrode assembly having a structure in which electrodes and separators are alternately arranged, the secondary battery case comprising:
a recess part recessed downward; and
a sealing part provided around the recess part when the secondary battery case is unfolded, and
an inclined part adjacent to the recess part and has a surface that is inclined downward toward the outside in a direction away from the recess part when the secondary battery case is unfolded,
wherein at least portions of the sealing part are attached to each other to seal inner surfaces of the recess part from an outside, and
wherein, when the secondary battery case is unfolded, the sealing part surrounds circumferences of the recess part and the inclined part.