Battery constructions having increased internal volume for...

H - Electricity – 01 – M

Patent

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H01M 2/02 (2006.01) H01M 2/04 (2006.01) H01M 2/08 (2006.01) H01M 2/12 (2006.01) H01M 2/32 (2006.01) H01M 4/75 (2006.01) H01M 6/08 (2006.01) H01M 4/70 (2006.01) H01M 6/06 (2006.01)

Patent

CA 2340660

An electronical cell is provided that includes: a can having an open end and a closed end; and a cover positioned across the open end of the can, the cover and can defining an internal volume within the can in which electrochemically active materials including at least positive and negative electrodes and an electrolyte are contained. In one embodiment, the internal volume is at least 88.4 percent of the total volume of the battery. In order embodiments, the internal volume is at least 89.2 percent (D-sized batteries), at least 83.2 percent (C-sized batteries), at least 82.0 percent (AA-sized batteries) and at least 78.7 percent (AAA-sized batteries), of the total volume of the battery. In further embodiments, the internal volume is at least 44.67 cm3 (D-sized batteries), at least 20.21 cm3 (C-sized batteries), at least 6.47 cm3 (AA- sized batteries) and at least 2.811 cm3 (AAA-sized batteries).

L'invention concerne une cellule électrochimique qui comporte : une boîte présentant une extrémité ouverte et une extrémité fermée; et un couvercle placé sur l'extrémité ouverte de la boîte, le couvercle et la boîte définissant un volume interne à l'intérieur de la boîte, dans lequel sont contenues des matières actives d'un point de vue électrochimique, y compris au moins des électrodes positive et négative et un électrolyte. Dans un mode de réalisation, le volume interne constitue au moins 88, 4 pour cent du volume total de la batterie. Dans d'autres modes de réalisation, le volume interne constitue au moins 89,2 pour cent (batteries de taille D), au moins 83,2 pour cent (batteries de taille C), au moins 82,0 pour cent (batteries de taille AA), et au moins 78,7 pour cent (batteries de taille AAA) du volume total de la batterie. Dans d'autres modes de réalisation, le volume interne est d'au moins 44,67 cm?3¿ (batteries de taille D), d'au moins 20,21 cm?3¿ (batteries de taille C), d'au moins 6,47 cm?3¿ (batteries de taille AA), et d'au moins 2,811 cm?3¿ (batteries de taille AAA).

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