Fuel cell stack with even distributing gas manifolds

Details Fuel cell stack with even distributing gas manifolds Fuel cell stack with even distributing gas manifolds

H - Electricity

01

M

H01M 8/04 (2006.01)

Patent

CA 2567933

A method of controlling fluid flow to a stack of fuel cell flow field plates comprises providing in each fuel cell flow field plate of the stack of plates a fluid supply manifold aperture for conducting a supply of fluid to a number of the plates in the stack, the fluid supply manifold apertures forming an elongated fluid supply manifold extending through the stack, flowing the supply of fluid into the fluid supply manifold and laterally diverting a part of the supply of fluid to feed each of the number of the plates. The plates are each fed in parallel from the fluid supply manifold, and the laterally diverting is performed in a manner to avoid turbulence in the fluid supply manifold from adversely affecting supply of fluid to downstream ones of the number of plates.

L'invention concerne un procEdE de commande d'Ecoulement de fluide vers un empilement de plaques de champ d'Ecoulement de cellules Electrochimiques, consistant A : mEnager dans chaque plaque de champ d'Ecoulement de cellules Electrochimiques de l'empilement de plaques, une ouverture de collecteur d'amenée de fluide pour assurer une amenée de fluide vers un certain nombre de plaques de l'empilement, les ouvertures de collecteur d'amenée de fluide formant un collecteur allongE d'amenée de fluide s'Etendant A travers l'empilement ; laisser couler le fluide dans le collecteur d'amenée de fluide et A dEvier latEralement une partie du fluide d'amenée pour alimenter chacune des plaques. Les plaques sont chacune alimentEes en parallEle par le collecteur d'amenée de fluide et la dErivation latErale s'effectue de maniEre A empEcher toute turbulence dans le collecteur d'amenée de fluide de compromettre l'amenée de fluide vers des plaques situEes en aval.

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