BATTERY SEALING DEVICE

The invention relates to a battery sealing device, comprising an upper pressing member (1 ), a polar rod (2), a battery cover plate (3) and a sealing member (4); the polar rod (2) comprises a polar rod large end (21 ), a polar rod small end (22) and a polar rod connecting plate (23); the polar rod large end (21 ) is connected to the upper surface of the polar rod connecting plate (23), and the polar rod small end (22) is connected to the lower surface of the polar rod connecting plate (23); the upper pressing member (1 ) is provided with an upper pressing through hole which is matched with the periphery of the polar rod large end (21 ); the battery cover plate (3) is provided with a cover plate through hole; the polar rod large end (21 ) penetrates through the upper pressing through hole and the cover plate through hole; the upper pressing member (1 ) is arranged above the battery cover plate (3); the sealing member (4) comprises an upper sealing element (41 ) formed between the upper pressing member (1 ) and the battery cover plate (3), an intermediate sealing element (42) formed in the gap between the cover plate through hole and the polar rod large end (21 ), and a lower sealing element (43) formed between the battery cover plate (3) and the polar rod connecting plate (23). The battery sealing device of the present invention is higher in sealing property, simpler in structure, and lower in cost. L'invention concerne un dispositif d'étanchéité de batterie, comprenant un élément de pression supérieur (1), une tige polaire (2), une plaque de couvercle de batterie (3) et un élément d'étanchéité (4) ; la tige polaire (2) comprend une grande extrémité de tige polaire (21), une petite extrémité de tige polaire (22) et une plaque de liaison de tige polaire (23) ; la grande extrémité de tige polaire (21) est reliée à la surface supérieure de la plaque de liaison de tige polaire (23), et la petite extrémité de tige polaire (22) est reliée à la surface inférieure de la plaque de liaison de tige polaire (23) ; l'élément de pression supérieur (1) comporte un trou traversant de pression supérieur qui correspond à la périphérie de la grande extrémité de tige polaire (21) ; la plaque de couvercle de batterie (3) comporte un trou traversant de plaque de couvercle ; la grande extrémité de tige polaire (21) pénètre à travers le trou traversant de pression supérieur et le trou traversant de plaque de couvercle ; l'élément de pression supérieur (1) est disposé au-dessus de