Nonaqueous cell with improved thermoplastic sealing member

Details Nonaqueous cell with improved thermoplastic sealing member Nonaqueous cell with improved thermoplastic sealing member

H - Electricity

01

M

H01M 2/08 (2006.01) H01M 2/12 (2006.01)

Patent

CA 2538271

An electrochemical battery cell with an aperture in the container or cell cover has the aperture sealed by an improved thermoplastic sealing member, which forms at least part of the cell~s pressure relief vent and is made from a material comprising a thermoplastic resin and more than 10 weight percent of a thermal-stabilizing filler, to provide an effective seal and a reliable pressure relief vent over a broad temperature range.

La présente invention se rapporte à une cellule électrochimique, dont le logement ou le couvercle est doté d'une ouverture, laquelle est fermée hermétiquement par un élément d'étanchéité thermoplastique amélioré. Ledit élément d'étanchéité forme au moins une partie de l'évent limiteur de pression de la cellule, et est constitué d'une matière contenant une résine thermoplastique et plus de 10 % poids d'une charge de stabilisation thermique, ce qui permet d'obtenir un dispositif d'étanchéité efficace et un évent limiteur de pression fiable à une large gamme de températures.

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