Cap assembly of battery

Details Cap assembly of battery Cap assembly of battery

H - Electricity

01

M

H01M 2/12 (2006.01) H01M 2/04 (2006.01) H01M 2/10 (2006.01) H01M 6/50 (2006.01)

Patent

CA 2249202

A cap assembly of a battery, comprising: a cap plate for covering the upper portion of a battery case; a positive terminal installed on the cap plate, insulated from the cap plate; a rivet member having a rivet protrusion, through which a vent hole is formed, inserted through holes formed in the cap plate and the positive terminal for riveting them together, the rivet member electrically connected to the positive terminal; a safety member installed at the lower end of rivet member, blocking the vent hole; and a positive tap fixing member attached to the lower end of the safety member and joined to a positive tap of an electrode assembly in the battery case, wherein the safety member is ruptured and separated from the positive tap fixing member by an internal pressure increase of the battery case.

Ensemble de bouchon de batterie constitué des éléments suivants : une plaque de bouchon servant à couvrir la partie supérieure du bac de la batterie; une borne positive montée sur la plaque du bouchon, mais isolée de cette plaque; un rivet, à dépassement en forme d'évent, inséré dans les trous de la plaque du bouchon et de la borne positive pour qu'il les rivète l'un à l'autre, le rivet étant relié électriquement à la borne positive; un élément de sécurité fixé à l'extrémité inférieure du rivet pour qu'il bloque l'évent; et un élément de fixation solide, relié à l'extrémité inférieure de l'élément de sécurité et rattaché à la fixation solide d'un ensemble d'électrodes situé dans le bac de la batterie. L'élément de sécurité se brise et se sépare de l'élément de fixation du branchement positif lorsque la pression interne du bac de la batterie augmente.

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