Manifold for fuel cell stack

H - Electricity – 01 – M

Patent

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Details

H01M 8/04 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2584109

The interior of a manifold (1) comprises, for each of a plurality of fluid types supplied to a fuel cell stack (2), an interior side passage (11b-13b) connected to a fluid supply/discharge port (2f) of the stack, and an exterior side passage (11a-13a) which connects the interior side passage to an external pipe. The interior side passage is formed in tiered fashion for each of the fluid types, and one or all of the exterior side passages and interior side passages communicate via a volume portion (11c-13c) which passes vertically through the interior of the manifold in the tier direction. By providing the volume portion, which has a large passage sectional area, resistance acting on the fluid that flows into the stack can be reduced, and as a result, energy loss can be suppressed.

L~intérieur d~un collecteur (1) comporte, pour chaque type d~une pluralité de types de fluides alimentés à un assemblage de piles à combustible (2), un passage de côté intérieur (11b-13b) relié à un orifice d~alimentation/évacuation de fluide (2f) de l~assemblage, et un passage de côté extérieur (11a-13a) qui relie le passage de côté intérieur à un tuyau externe. Le passage de côté intérieur est formé en étages pour chaque type de fluide, et un ou tous les passage(s) de côté extérieur et passage(s) de côté intérieur communiquent via une partie de volume (11c-13c) qui passe à la verticale par l~intérieur du collecteur dans le sens des étages. Grâce à la partie de volume, qui, en coupe transversale, possède une importante surface pour le passage, il est possible de réduire une résistance agissant sur le fluide qui s~écoule dans l~assemblage, et par conséquent, de supprimer des pertes d~énergie.

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