Patent ID: 11955648
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC H

Claim 18:
19. A pouch-type secondary battery comprising:
an electrode assembly formed by stacking electrodes and separators, each electrode having electrode tabs; and
a battery case comprising a cup accommodating the electrode assembly, a side portion surrounding the cup, and a plurality of die edges arranged at a junction of the side portion and a wall of the cup,
wherein one of the plurality of die edges include:
a first rounded region defining a first radius of curvature for receiving the electrode tabs; and
a second rounded region defining one or more second radii of curvature 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 than the radii of curvature of the outer region.