Fuel cell assembly having feed-back sensor

H - Electricity – 01 – M

Patent

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H01M 8/04 (2006.01)

Patent

CA 2695218

The invention relates to a sensor cell (1010) for control purposes usable in an assembly (1000) of fuel cells of the type having a membrane electrode assembly (MEA) interposed between an anode gas diffusion layer and a cathode gas diffusion layer, and first and second current collectors coupled to said anode and cathode gas diffusion layers (GDL), respectively. The sensor cell (1010) is preferably coupled so that it shares the negative current collector (1050) with last fuel cell in the in-plane fuel cell assembly (1000), and is short-circuited by a resistor (1070) to provide a voltage signal, indicative of the status of the assembly in operation.

L'invention concerne un élément de capteur (1010) dans un but de contrôle utilisable dans un ensemble (1000) de piles à combustible du type ayant un ensemble d'électrode à membrane (MEA) interposé entre une couche de diffusion de gaz d'anode et une couche de diffusion de gaz de cathode, et des premier et second collecteurs de courant reliés aux couches de diffusion de gaz d'anode et de cathode (GDL), respectivement. L'élément de capteur (1010) est relié de préférence de sorte qu'il partage le collecteur de courant négatif (1050) avec la dernière pile à combustible de l'ensemble de piles à combustible dans le plan (1000), et est court-circuité par une résistance (1070) pour fournir un signal de tension, représentatif de l'état de l'ensemble en fonctionnement.

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