A fuel cell system coolant control strategy

H - Electricity – 01 – M

Patent

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Details

H01M 8/04 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2636972

The present invention provides a fuel cell system having means for controlling the flow of coolant within a fuel cell system. A desirable rate of flow of coolant is created, during power generation, by determining the difference in temperature between coolant flowing into individual cell sets of the fuel cell assembly and the temperature of coolant exhausted from the cell assembly. The fuel cell system features controls adapted to evaluate the heat generation state of each fuel cell set and to regulate the temperature of cell sets by controlling the rate circulation of the coolant.

Système de pile à combustible équipé d'une unité de contrôle de flux d'agent de refroidissement dans le système. On établit un taux de flux d'agent de refroidissement souhaité, durant la production de puissance, en déterminant la différence de température entre l'agent de refroidissement qui s'écoule dans les séries de cellules individuelles de l'ensemble pile à combustible et la température de l'agent de refroidissement évacué hors de l'ensemble en question. Le système de pile à combustible présente des moyens de contrôle qui permettent d'évaluer l'état de production de chaleur de chaque série de cellule et de réguler la température des séries de cellules en contrôlant le degré de circulation de l'agent de refroidissement.

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