Fuel cell system having fuel cell stack with impurity storage

Details Fuel cell system having fuel cell stack with impurity storage Fuel cell system having fuel cell stack with impurity storage

H - Electricity

01

M

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

Patent

CA 2679999

To provide a simple and compact fuel cell system that prevents degradation of the performance of a fuel cell stack due to accumulation of impurities and improves fuel efficiency by reducing discharge of a fuel gas. An impurity storage section 30 that communicates with an outlet of an anode gas passage of each cell 20 and stores an impurity in a fuel gas is formed in a fuel cell stack 2. The volume of the impurity storage section 30 is preferably larger than the volume of a fuel gas inlet manifold 26.

L'invention concerne un système de pile à combustible simple et compact destiné à prévenir la baisse de performance d'un empilement de piles à combustible due à l'accumulation d'impuretés, et à améliorer l'efficacité du combustible par réduction du refoulement de gaz combustible. Une section (30) de stockage d'impuretés, en communication avec une sortie de passage de gaz d'anode de chaque cellule (20) et stockant les impuretés d'un gaz combustible, est formée dans un empilement (2) de piles à combustible. Le volume de la section (30) de stockage d'impuretés est, de préférence, supérieur à celui d'un collecteur (26) d'entrée de gaz combustible.

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