Patent ID: 9203058
Filing Date: 2015-12-01
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A battery cell comprising: an electrode assembly including a separator disposed between a cathode and an anode, wherein a curved portion is formed at a portion of at least one side of the electrode assembly such that the electrode assembly is asymmetrically configured with respect to a central axis crossing the electrode assembly in plane; and a battery case in which the electrode assembly is mounted, the battery case being formed of a laminate sheet comprising a metal layer and a resin layer, wherein the battery cell is a pouch-shaped battery cell, wherein the laminate sheet is configured to include a folded portion and a sealed portion, the folded portion corresponding to the curved portion of the electrode assembly, wherein the folded portion of the battery case has a thickness less than that of the sealed portion of the battery case, and wherein the curved portion comprises one arc or more successive arcs, and each of the arcs is curved toward an outside of the battery cell in a convex form.