Patent ID: 6451481
Filing Date: 2002-09-17
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
A lithium secondary battery having a bi-cell battery cell including:an anode plate, first and second separators fixed to respective opposite surfaces of and sandwiching the anode plate, and first and second cathode plates fixed to outer surfacer of the first and second separators, respectively, wherein each of the first and second cathode plates includes a cathode current collector, a front cathode sheet fixed to a front surface of the cathode current collector, adjacent to a respective one of the first and second separators, and a rear cathode sheet fixed to a rear surface of the cathode current collector, remote from the respective one of the first and second separators, and having a smaller thickness than the front cathode sheet, wherein the front cathode sheet is no thicker than five times the thickness of the rear cathode sheet.