Bipolar separator for fuel cell stack

Details Bipolar separator for fuel cell stack Bipolar separator for fuel cell stack

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2538961

It is described a bipolar separator for polymer membrane fuel cell stacks, delimited by two sheets provided with fluid passage holes connected by means of a corrugated element and comprising a passage section for a thermostatting liquid, which allows to achieve the withdrawal of heat from the adjacent cells and the humidification and distribution of gases with a single integrated piece, simplifying the assembly and the hydraulic sealing of the stack.

La présente invention se rapporte à un séparateur bipolaire destiné à des assemblages de piles à combustible à membrane polymère, qui est défini par deux feuilles dotées de trous de passage de fluide, qui sont reliées par l'intermédiaire d'un élément ondulé et possèdent une section permettant le passage d'un liquide de thermostatisation. Ainsi, l'invention permet un retrait de chaleur des piles adjacentes, ainsi que l'humidification et la distribution des gaz, à l'aide d'une pièce intégrée unique, et par là même une simplification de l'ensemble et de l'étanchéisation hydraulique de l'assemblage.

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