Assembled battery and toroidal cell used in the same

Details Assembled battery and toroidal cell used in the same Assembled battery and toroidal cell used in the same

H - Electricity

01

M

H01M 10/50 (2006.01)

Patent

CA 2732151

An assembled battery with a high capacity, comprising a plurality of unit cells electrically connected with one another in parallel, the unit cells each having a through-hole and being of toroidal shape, and the plurality of unit cells are arranged in a nested manner such that one unit cell is disposed within another unit cell. The problem that toroidal batteries with high capacity, high power density and small thickness may have a large volume and low energy density is solved by connecting in parallel a plurality of unit cells nested within one another, and heat dissipation of the battery is also further improved. A toroidal cell having heat dissipating fins is also provided.

La présente invention concerne un bloc-batterie de grande capacité, comprenant de multiples éléments de batterie raccordés les uns aux autres en parallèle. L?élément de batterie comporte un trou traversant et est de forme annulaire, et de multiples éléments de batterie sont nichés les uns dans les autres. Par une connexion en parallèle entre les éléments de batterie qui sont nichés les uns dans les autres, on peut résoudre le problème d?un volume massif et d?une densité énergétique faible de la batterie annulaire possédant une grande capacité, une densité de puissance élevée et une faible épaisseur, et une performance de dissipation thermique du bloc-batterie peut en outre être améliorée. L?invention concerne également un élément de batterie annulaire comportant des ailettes rayonnantes.

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