US 12,244,023 B2
Pouch-type battery case and pouch type secondary battery
Se Young Oh, Daejeon (KR); Jeong Min Ha, Daejeon (KR); Geun Hee Kim, Daejeon (KR); Hyun Beom Kim, Daejeon (KR); and Hyung Ho Kwon, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/021,490
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Aug. 19, 2021, PCT No. PCT/KR2021/011062
§ 371(c)(1), (2) Date Feb. 15, 2023,
PCT Pub. No. WO2022/039536, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 10-2020-0104228 (KR), filed on Aug. 19, 2020; and application No. 10-2021-0074472 (KR), filed on Jun. 8, 2021.
Prior Publication US 2024/0021925 A1, Jan. 18, 2024
Int. Cl. H01M 50/105 (2021.01); H01M 50/342 (2021.01); H01M 50/466 (2021.01)
CPC H01M 50/105 (2021.01) [H01M 50/342 (2021.01); H01M 50/466 (2021.01)] 39 Claims
OG exemplary drawing
 
1. A pouch-type battery case comprising a cup part configured to accommodate an electrode assembly of stacked electrodes and separators, the cup part comprising:
a plurality of outer walls forming a periphery of the cup part, and
a plurality of die edges connecting the plurality of outer walls to a side or degassing part,
wherein at least one of the die edges is rounded to define a curvature radius that corresponds to 1/20 to ⅙ of a depth of the cup part, wherein at least one of the die edges is rounded to define a curvature radius of 1 mm or less.