Gas leak detection method for fuel cell

Details Gas leak detection method for fuel cell Gas leak detection method for fuel cell

G - Physics

01

M

G01M 3/40 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2395015

In order to improve detecting accuracy in a gas leak detection for a fuel cell (1), in a gas leak detection method for a fuel cell having a solid polymer electrolyte membrane (51) sandwiched by an anode (52) and a cathode (53), an output voltage is measured in an activated over-potential region in a state in which the pressure of fuel gas which is supplied to the anode (52) is maintained higher than the pressure of gas which is supplied to the cathode (53), and a gas leak is determined to exist when the output voltage is lower than a predetermined pressure value.

En vue d'accroître la précision de détection d'une fuite de combustible dans une pile à combustible (1), une méthode de détection de fuite dans une pile à combustible, constituée d'une membrane échangeuse de protons (51) située entre une anode (52) et une cathode (53), prévoit la mesure de la tension de sortie à un endroit de surtension portée à un état selon lequel la pression du combustible fourni à l'anode (52) est maintenue à un degré supérieur à celle du combustible fourni à la cathode (53), une fuite de combustible étant déterminée lorsque la tension de sortie est inférieure à une valeur de pression donnée.

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