H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 2/12 (2006.01) H01M 2/08 (2006.01) H01M 2/34 (2006.01) H01M 10/40 (2006.01)
Patent
CA 2277049
An explosion-proof non-aqueous electrolyte battery is provided which has a current cutoff device for cutting off electrical connection within the battery with safety and certainty in the event of overcharge while remaining inoperable in normal use or in storage at an elevated temperature. A pair of an upper vent plate 1 and a lower vent plate 2 mechanically and electrically coupled with each other is provided on the sealing part of the battery where the mechanical coupling of the pair of the upper vent plate 1 and the lower vent plate 2 is so configured as to rupture and cut off an electric current in the event the internal pressure of the battery case increases beyond a predetermined value, and the rupture pressure at which the mechanical coupling between the pair of upper vent plate 1 and the lower vent plate 2 is broken has been set to decrease as the spatial volume occupancy ratio of the battery increases.
Elément d'accumulateur électrolytique non aqueux et à l'épreuve des explosions, comportant un disjoncteur d'alimentation électrique qui coupe la connexion électrique dans un élément de manière adaptée et sûre en cas de surcharge et dont le fonctionnement est rendu impossible pendant l'utilisation normale ou quand il est stocké à une température élevée. Ledit élément est caractérisé en ce qu'il comporte en outre deux plaques (1, 2) supérieure et inférieure de valve placées au niveau de la partie d'étanchéité de l'élément et couplées mécaniquement et électriquement, en ce que le couplage mécanique est coupé lorsque la pression interne de l'élément dépasse un niveau donné et en ce que la pression nécessaire pour couper le couplage mécanique est abaissée à mesure que la proportion d'occupation du volume spatial de l'élément augmente.
Kashihara Yoshihiro
Masumoto Kenjin
Mori Katsuhiko
Tsuruta Kunio
Matsushita Electric Industrial Co. Ltd.
Sim & Mcburney
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