Patent ID: 6759163
Filing Date: 2004-07-06
Classification: H01M,Y02E,Y10T

Abstract:
An electrochemical cell comprising an anode electrode and a cathode electrode housed inside a casing and activated with an electrolyte, wherein one of the anode electrode and the cathode electrode is connected to a terminal lead insulated from the casing by a glass-to-metal seal, the improvement is the glass-to-metal seal comprising:the glass-to-metal seal having an insulating glass extending between and sealed to a support portion of the casing and the terminal lead, wherein the insulating glass has a first coefficient of thermal expansion that ranges from about 6.3Ã—10âˆ’6/Â° C. to about 6.5Ã—10âˆ’6/Â° C., the terminal lead has a second coefficient of thermal expansion that ranges from about 9.4Ã—10âˆ’6/Â° C. to about 11.7Ã—10âˆ’6/Â° C. and the casing support portion has a third coefficient of thermal expansion that ranges from about 9.5Ã—10âˆ’6/Â° C. to about 19Ã—10âˆ’6/Â° C.