Fuel cell protection

Details Fuel cell protection Fuel cell protection

H - Electricity

01

M

H01M 8/04 (2006.01)

Patent

CA 2528980

The invention relates to a method of protecting a fuel cell (12) comprising elementary cells, whereby said cell is supplying electric power in response to a power demand. Moreover, a booster circuit (30) is adapted to supply complementary electric power in order to assist the fuel cell. The inventive method comprises the following steps consisting in: determining a parameter that is representative of the minimum voltage from among the voltages at the terminals of each elementary cell; and controlling the complementary electric power supplied by the booster circuit, such that the minimum voltage remains above a determined threshold. The invention also relates to a fuel cell booster device.

L'invention concerne un procédé de protection d'une pile à combustible (12), constituée de cellules élémentaires, fournissant une puissance électrique en réponse à une demande de puissance, un circuit d'appoint (30) étant adapté à fournir une puissance électrique complémentaire pour assister la pile à combustible, comprenant les étapes consistant à déterminer un paramètre représentatif de la tension minimale parmi les tensions aux bornes de chaque cellule élémentaire ; et à commander la puissance électrique complémentaire fournie par le circuit d'appoint pour que ladite tension minimale reste supérieure à un seuil déterminé. La présente invention concerne également un dispositif d'appoint de pile à combustible.

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