Closure assembly for electrochemical cells

Details Closure assembly for electrochemical cells Closure assembly for electrochemical cells

H - Electricity

01

M

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

Patent

CA 2752824

An end assembly seals a cylindrical electrochemical cell. The assembly includes a positive temperature coefficient (PTC) device and a gasket having a protrusion that cooperates with the end assembly isolates the PTC device from primary axial compression forces present in the closure assembly. In further embodiments of the present invention, the end assembly may be produced by insert molding a seal element about the terminal cover and the gasket itself has an E or F shaped cross section.

L'invention concerne un ensemble terminal qui bouche une pile électrochimique cylindrique. L'ensemble comprend un dispositif à coefficient de température positif (PTC), et un joint doté d'une protubérance qui coopère avec l'ensemble terminal isole le dispositif PTC d'efforts de compression axiale primaire présents dans l'ensemble de fermeture. Dans d'autres modes de réalisation de la présente invention, l'ensemble terminal peut être produit par surmoulage d'un élément d'étanchéité autour du couvercle de la borne, le joint proprement dit présentant une section droite en E ou en F.

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