METHOD FOR MANUFACTURING RECTANGULAR BATTERY CELL USING METAL PLATES

摘要

Disclosed is a method of manufacturing a battery cell, which is sealed inside a prismatic battery case, including an electrode assembly which includes a cathode, an anode and a separator interposed between the cathode and the anode. The method includes (a) bending and then welding a metal plate having a predetermined thickness to manufacture a prismatic body in which an upper portion and bottom portion are open; (b) manufacturing an upper and bottom portion sealing member corresponding to shape of each of the upper portion and the bottom portion of the prismatic body; (c) contacting and then welding the bottom portion of the prismatic body with the bottom portion sealing member; (d) inserting the electrode assembly into the battery case, the bottom portion of which is sealed, manufactured according to step (c); and (e) contacting and then welding the upper portion of the battery case manufactured according to step (d) with the upper portion sealing member.