Sealed electrochemical generator equipped with a...

H - Electricity – 01 – M

Patent

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Details

H01M 2/34 (2006.01) H01M 2/12 (2006.01) H01M 2/30 (2006.01)

Patent

CA 2244156

The invention concerns a sealed electrochemical generator (1) equipped with a circuit-breaker terminal (3) providing the electrical connection between an external contact piece (7) of said terminal and one (6) of its electrodes, positive or negative of the generator, said external contact piece (7) of the terminal being electrically connected to a wall (11) ensuring the impermeability of the terminal and capable of being deformed by the action of an increased internal pressure, said wall (11) being connected to said electrode (6) by means (13, 14, 16) ensuring the current conduction, this conduction being interrupted when an internal pressure P greater than a predetermined pressure P¿1? occurs causing the deformation of said wall and break of connection, between the wall (11) and a breaking piece (13), characterised in that said circuit-breaker terminal (3) sealingly passes through a cover (2) closing the generator, said cover being further provided, separately, with a safety inner capsule (4) which breaks under pressure P¿2?>P¿1?.

Générateur électrochimique étanche (1) équipé d'une borne coupe-circuit (3) assurant la liaison électrique entre une pièce de contact extérieure (7) de ladite borne et l'une (6) des électrodes, positive ou négative du générateur, ladite pièce de contact extérieure (7) de la borne étant électriquement reliée à une paroi (11) assurant l'étanchéité de la borne et étant susceptible de se déformer sous l'action d'une augmentation de la pression interne, ladite paroi (11) étant reliée à ladite électrode (6) par des moyens (13, 14, 16) assurant la continuité électrique, cette continuité étant interrompue lors de l'apparition d'une pression interne P supérieure à une valeur déterminée P1 provoquant la déformation de ladite paroi et la rupture d'une liaison, entre la paroi (11) et une pièce de rupture (13), caractérisé en ce que ladite borne coupe-circuit (3) traverse d'une façon étanche un couvercle de fermeture (2) du générateur, ledit couvercle étant en outre équipé séparément, d'un opercule de sécurité (4) se rompant sous une pression P2>P1.

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