Patent ID: 6521373
Filing Date: 2003-02-18
Classification: H01M,Y02E,Y02P

Abstract:
A flat non-aqueous electrolyte secondary cell comprising a metallic anode case also serving as an anode terminal and a metallic cathode case also serving as a cathode terminal fit to each other via an insulating gasket, the anode or cathode case having a caulked opening-sealed structure and having in the inside thereof an electricity-generating element including at least a cathode, a separator and an anode and a non-aqueous electrolyte, wherein an electrode unit in a sheet form consisting of the cathode and the anode opposite to each other via the separator is wound to form an electrode group, and the total sum of the areas of the opposing cathode and anode in this electrode group is larger than the area of the opening of said insulating gasket.