Patent ID: 8460828
Filing Date: 2013-06-11
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. An electrode assembly, comprising: a cathode electrode, having an active material layer coated on one major surface of a current collector, wherein the cathode is bent in a zigzag fashion in vertical sections to form folded regions in the cathode, an anode electrode, having an active material layer coated on one major surface of another current collector, wherein the anode is bent in a zigzag fashion in vertical sections to form folded regions in the anode, wherein the bent cathode and the bent anode are fitted to each other, such that the electrode active material layers face each other, and a separator disposed between the cathode and the anode, wherein the separator extends with a size equivalent to a multiple of the width of each electrode in a longitudinal direction perpendicular to the bending direction, and a plurality of the cathode electrodes and a plurality of the anode electrodes are fitted to each other along the length of the separator in the longitudinal direction and then folded.