Vapor transmission resistant seal members for nonaqueous...

Details Vapor transmission resistant seal members for nonaqueous... Vapor transmission resistant seal members for nonaqueous...

H - Electricity

01

M

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

Patent

CA 2691177

A seal member having a thermoplastic body for an electrochemical cell containing a nonaqueous organic solvent electrolyte. In particular, the seal member is preferably one or more of (a) a seal located between a cell container wall and a cell cover and (b) a seal of a vent assembly, more particularly a ball vent assembly. The seal member has a composite construction including one or more vapor transmission barrier layers disposed on a portion of the thermoplastic body.

La présente invention concerne un joint étanche à corps thermoplastique destiné à une pile électrochimique contenant un électrolyte à solvant organique non-aqueux. Ce joint étanche est de préférence au moins (a) un joint situé entre la paroi d'élément et le couvercle d'élément ou (b) un joint d'ensemble à évent, et plus particulièrement d'ensemble à évent à bille. Le joint étanche est de construction composite comprenant une ou plusieurs couches barrières, s'opposant à l'émission de vapeurs, et disposées sur une partie du corps thermoplastique.

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