US 11,955,648 B2
Pouch-type battery case, apparatus for forming same, and pouch-type secondary battery
Se Young Oh, Daejeon (KR); Jeong Min Ha, Daejeon (KR); Sang Hun Kim, Daejeon (KR); Sin Woong Kim, 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)
Filed by LG Energy Solution, Ltd., Seoul (KR)
Filed on Jan. 6, 2022, as Appl. No. 17/569,826.
Claims priority of application No. 10-2021-0041418 (KR), filed on Mar. 30, 2021.
Prior Publication US 2022/0320634 A1, Oct. 6, 2022
Int. Cl. H01M 50/105 (2021.01); H01M 10/04 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 50/105 (2021.01) [H01M 10/04 (2013.01); H01M 10/0525 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A pouch-type battery case comprising:
a pouch film defining a first cup configured to accommodate an electrode assembly, a side portion at least partially surrounding the first cup, and at least one die edge arranged at a junction of the side portion and a wall of the first cup,
wherein the at least one die edge comprises:
a first rounded region defining a first radius of curvature, the first rounded region arranged to receive an electrode tab extending from the electrode assembly; and
a second rounded region defining one or more second radii of curvature, the one or more second radii of curvature being less than the first radius of curvature,
wherein the second rounded region includes an inner region and an outer region with respect to the first rounded region, and
a radius of curvature of the inner region is different from a radii of curvature of the outer region.