Ni-h2 battery having improved thermal properties

Details Ni-h2 battery having improved thermal properties Ni-h2 battery having improved thermal properties

H - Electricity

01

M

H01M 10/50 (2006.01) H01M 2/02 (2006.01)

Patent

CA 2151508

A common pressure vessel type nickel-hydrogen storage battery having an outer pressure vessel (5) contains a stack of compartments. Each compartment includes at least one battery cell (80), a heat transfer member (21) and a cell spacer (22) for maintaining a relatively constant distance between adjacent compartments. Each heat transfer member includes a fin portion (21a), which is thermal contact with a battery cell, and a flange portion (21b) which extends longitudinally from the fin portion and is in tight thermal contact with the inner wall of the pressure vessel. The heat transfer member serves to transfer heat generated by the cell radially outward to the pressure vessel, which is capable of dissipating the heat into the surrounding atmosphere.

Un accumulateur à nickel-hydrogène du type cuve sous-pression ordinaire comportant une cuve sous-pression externe (5) contient une pile de compartiments. Chaque compartiment comprend au moins un élément d'accumulateur (80), un organe de transfert thermique (21) et un organe (22) d'espacement des éléments d'accumulateur qui permet de maintenir une distance relativement constante entre des compartiments adjacents. Chaque organe de transfert thermique comporte une partie à ailettes (21a) qui est en contact thermique avec un élément d'accumulateur, et une partie à rebord (21b) qui s'étend longitudinalement à partir de la partie à ailettes et qui est en contact thermique étroit avec la paroi interne de la cuve sous-pression. L'organe de transfert thermique sert à transférer la chaleur générée par l'élément d'accumulateur, radialement, vers l'extérieur de la cuve sous-pression, et peut dissiper la chaleur dans l'atmosphère environnante.

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