Fuel cell system and method for reducing electrode...

H - Electricity – 01 – M

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H01M 8/04 (2006.01)

Patent

CA 2629627

A fuel cell system includes a controller that estimates an air replacement state of a fuel electrode and a hydrogen circulation path while the operation of the fuel cell system is stopped. Upon starting the fuel cell system, the controller changes the order in which the operation of a hydrogen circulation pump is started and a hydrogen pressure regulator is opened to start the supply of hydrogen gas on the basis of the estimated air replacement state, thereby preventing deterioration caused by uneven distribution of air and hydrogen in the fuel electrode.

Un système de pile à combustible comprend un dispositif de commande qui estime un état de remplacement de l'air d'une électrode à combustible et un chemin de circulation d'hydrogène lorsque le fonctionnement du système de pile à combustible est stoppé. Lors du démarrage du système de pile à combustible, le dispositif de commande modifie l'ordre consistant à activer le fonctionnement d'une pompe de circulation d'hydrogène et un régulateur de pression d'hydrogène est actionné pour démarrer l'alimentation en gaz d'hydrogène sur la base de l'état de remplacement de l'air estimé, ce qui empêche ainsi la détérioration provoquée par une distribution inégale d'air et d'hydrogène dans l'électrode à combustible.

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