Sealing and insulating member for galvanic cells

Details Sealing and insulating member for galvanic cells Sealing and insulating member for galvanic cells

H - Electricity

01

M

319/109, 319/39

H01M 2/04 (2006.01) H01M 2/08 (2006.01) H01M 2/12 (2006.01) H01M 6/02 (2006.01)

Patent

CA 1164936

GALVANIC CELL AND SEALING AND INSULATION MEMBER THEREFOR ABSTRACT OF THE DISCLOSURE In a sealed galvanic cell having an anode, cathode, and cylindrical can into which the principal components of the cell are assembled, a sealing and insulating member at the top end of the cathode can is provided which is held in sealing relationship to the can by a crimp formed over the top edge thereof. The sealing and insulating member has a circular rim formed at its periphery in at least one of the top and bottom surfaces, the diameter of the sealing and insulating member being substantially the same as the inside diameter of the can above a bead which is formed near the top edge thereof. At least a portion of the thickness of the peripheral material of the member is stressed by the crimp in an amount greater than the elastic limit of the material, and at least another portion of the thickness of the peripheral material of the sealing and insulating member is stressed in an amount less than the elastic limit. The stressed portion is at the top or bottom of the periphery of the member. When the can is sealed by crimping over the member, a change of elevation of at least the central portion of the sealing and insulating member may occur or inward flexing of the peripheral rib may occur, or both. File No. PAT2011

393134

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