Method for testing the impermeability of a fuel cell stack

Details Method for testing the impermeability of a fuel cell stack Method for testing the impermeability of a fuel cell stack

H - Electricity

01

M

H01M 8/04 (2006.01)

Patent

CA 2679900

The invention relates to a method for testing the impermeability of a fuel cell stack. Said method comprises the following steps: operating the fuel cell stack with defined gas feed rates, modifying at least one gas feed rate in a defined manner, determining at least one cell or cell group voltage and evaluating the time profile of the at least one cell or cell group voltage.

L'invention concerne un procédé de contrôle de l'étanchéité d'un empilement de cellules électrochimiques, qui consiste à faire fonctionner l'empilement de cellules électrochimiques à des vitesses d'alimentation en gaz définies, à modifier d'une façon définie au moins une vitesse d'alimentation en gaz, à enregistrer au moins une tension d'une cellule ou d'un groupe de cellules et à évaluer la variation dans le temps de ladite au moins une tension d'une cellule ou d'un groupe de cellules.

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