Manganese dry battery

H - Electricity – 01 – M

Patent

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Details

H01M 2/02 (2006.01) H01M 2/08 (2006.01) H01M 6/06 (2006.01)

Patent

CA 2403102

A manganese dry battery which is stable and has an excellent gas tightness with any type of heat-shrinkable tube. The manganese dry battery comprises an anode zinc can (1), a cathode mixture (2) contained in the can, a separator (14) interposed between the can and the mixture, a carbon rod (3) inserted in the center of the mixture, a gasket (5) sealing the opening of the can and having a hole in the center thereof through which the carbon rod is inserted and a heat-shrinkable tube (6) covering the circumference of the can with the outer periphery of the gasket. The heat-shrinkable tube comprises at least one selected from the group consisting of polystyrene, polypropylene, polyethylene and a copolymer of ethylene and propylene, and a sealant (9) is applied at least between the opening end of the can and the gasket.

L'invention concerne une pile sèche à manganèse qui est stable et possède une excellente étanchéité aux gaz avec n'importe quel type de tube thermorétrécissable. Cette pile sèche à manganèse comprend un boîtier anode en zinc, un mélange cathodique contenu dans le boîtier, un séparateur intercalé entre le boîtier et le mélange, une tige de carbone introduite au centre du mélange, un joint d'étanchéité fermant hermétiquement l'ouverture du boîtier et ayant un trou en son centre, trou à travers lequel la tige de carbone est introduite, et un tube thermorétrécissable couvrant la circonférence du boîtier et la périphérie externe du joint d'étanchéité. Le tube thermorétrécissable est constitué d'au moins une matière sélectionnée dans le groupe comportant: polystyrène, polypropylène, polyéthylène, et un copolymère d'éthylène et de propylène, et on applique un matériau d'étanchéité au moins entre l'extrémité ouverte du boîtier et le joint d'étanchéité.

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