Patent ID: 8343652

Claim:
A battery pack comprising a battery cell including an electrode assembly of a cathode/separator/anode structure mounted in a receiving part of a cell case, wherein the cell case that is made of a laminate sheet including a resin layer and a metal layer is provided, at a predetermined region of the cell case corresponding to an upper end interface of the electrode assembly while the electrode assembly is mounted in a receiving part, with a small groove pressing against the upper end of the electrode assembly and fixing the electrode assembly with respect to the receiving part to prevent an upward movement of the electrode assembly, the small groove disposed in parallel with the upper end of the electrode assembly, wherein an inner surface of the cell case is protruded toward the upper end interface of the electrode assembly to form the small groove, and wherein the small groove has a depth of 0.5 to 1.5 mm, and wherein the inner surface of the pack case is constructed in a structure corresponding to a small groove of the battery cell.