Solid polymer fuel cell

H - Electricity – 01 – M

Patent

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Details

H01M 8/24 (2006.01) H01M 8/02 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2544622

Fuel cells (20) are superimposed one upon the other in the stacking direction. Each fuel cell (20) comprises an anode gas passage (32) and a cathode gas passage (36). Each passage has a meandering configuration provided with two or more bent portions (511, 512, 521, 522). At least the most downstream bent portion (512, 522) of at least one of the anode gas passage (32) and the cathode gas passage (36) is connected to a through-hole (332, 372) extending through the fuel cell stack (1) in the stacking direction of the fuel cells (20). The through hole (332, 372) averages out the condensed water in the anode gas passages (32) or the cathode gas passages (36) and prevents flooding from being caused in a specific anode gas or cathode gas passage.

L'invention concerne des piles à combustible (20) superposées les unes aux autres dans le sens de l'empilement. Chaque pile à combustible (20) comprend un conduit de gaz anodique (32) et un conduit de gaz cathodique (36). Chaque conduit présente une configuration méandrique avec deux ou plusieurs parties courbes (511, 512, 521, 522). Au moins la partie courbe située le plus en aval (512, 522) du conduit de gaz anodique (32) ou du conduit de gaz cathodique (36) est reliée à un trou débouchant (332, 372) qui traverse la pile (1) de piles à combustible dans le sens de l'empilement des piles à combustible. Le trou débouchant (332, 372) répartit l'eau condensée dans le conduit de gaz anodique (32) ou le conduit de gaz cathodique (36) et empêche qu'un engorgement soit provoqué dans un conduit spécifique de gaz anodique ou de gaz cathodique.

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