Patent ID: 7001439
Filing Date: 2006-02-21
Classification: C22C,H01M,Y02E,Y02P,Y10T

Abstract:
1. In a method of assembling an electrochemical cell having an anode can and a cathode can; wherein said cathode can has an open end and opposing closed end with integral side wall therebetween; wherein said anode can has an open end and opposing closed end and integral side wall therebetween; wherein the intersection of said anode can side wall and said anode can closed end forms an integral corner edge; wherein the cathode can is pushed onto the anode can so that the side wall of the cathode can overlaps at least a portion of the side wall of the anode can with an insulator seal material therebetween to form an intermediate cell, the improvement comprising: punching said intermediate cell into a die cavity by exerting a force against a portion of the corner edge of the closed end of the anode can without contacting the central portion of said anode can closed end, and simultaneously therewith applying an opposing greater force against the closed end of the cathode can thereby forcing the cell into said die cavity; wherein the edge of the cathode can at the open end thereof is crimped over a portion of the anode can side wall with insulator seal material therebetween.