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

Claim 9:
10. A battery case forming apparatus for manufacturing the pouch-type battery case of claim 1, the battery case forming apparatus comprising:
a die having a top surface, on which the pouch film is configured to be placed, the die defining at least one forming space recessed inwardly relative to the top surface; and
a punch disposed above the forming space and arranged to descend relative to the die to punch the pouch film into the forming space,
wherein the die comprises a plurality of pressing edges arranged at a junction of a wall defining the forming space and the top surface of the die,
wherein the plurality of pressing edges comprise:
a third rounded region having a third radius of curvature, the third rounded region arranged to form the first rounded region; and
a fourth rounded region having one or more fourth radii of curvature less than or equal to the third radius of curvature,
wherein the fourth rounded region includes a die inner region and a die outer region with respect to the third rounded region, and
a radius of curvature of the die inner region is different from a radii of curvature of the die outer region.