US 12,237,517 B2
Battery case for secondary battery and pouch type secondary battery
Sang Kyun Lee, Daejeon (KR); Min Soo Park, Daejeon (KR); Young Ha Kim, Daejeon (KR); Young Hoon Hong, Daejeon (KR); Seong Hyun Kim, Daejeon (KR); and Eui Jin Hong, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/606,953
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Mar. 31, 2020, PCT No. PCT/KR2020/004425
§ 371(c)(1), (2) Date Oct. 27, 2021,
PCT Pub. No. WO2020/242034, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 10-2019-0064786 (KR), filed on May 31, 2019.
Prior Publication US 2022/0209335 A1, Jun. 30, 2022
Int. Cl. H01M 50/105 (2021.01); H01M 10/04 (2006.01); H01M 50/46 (2021.01)
CPC H01M 50/105 (2021.01) [H01M 10/0459 (2013.01); H01M 50/46 (2021.01)] 15 Claims
OG exemplary drawing
 
1. A pouch type battery case for a secondary battery, which accommodates an electrode assembly, in which electrodes and separators are stacked, the battery case comprising:
a first cup part and a second cup part, which are recessed in a pouch film, respectively;
an accommodation part having a width dimension and a longitudinal dimension, the longitudinal dimension extending along a longitudinal direction of edges of the first cup part and the second cup part, which face each other, between the first cup part and the second cup part and in which one side of the electrode assembly is configured to be accommodated such that the one side of the electrode assembly is received within the width dimension of the accommodation part;
inclined parts extending from opposing ends, respectively, of the accommodation part and provided to be recessed in the pouch film; and
line forming parts extending linearly from outer ends, respectively, of the respective inclined parts and provided to be recessed in the pouch film in the same direction as the longitudinal dimension of the accommodation part.