Fuel cell system and method of controlling fuel cell system

H - Electricity – 01 – M

Patent

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H01M 8/04 (2006.01)

Patent

CA 2701643

A fuel cell stack includes a heat exchange unit that performs heat exchange between a gas mixture containing source hydrogen and a circulating gas and cooling water used for controlling the temperature of the fuel cell stack. A system controller adjusts the temperature of the cooling water by controlling a temperature control unit on the basis of the temperature of source hydrogen flowing into a junction at which the source hydrogen and a circulating gas are mixed such that the temperature of a source/recirculated hydrogen mixture that is mixed at the junction and that is supplied to the fuel cell stack is kept within a managed temperature range.

L'invention concerne un assemblage de pile à combustible comprenant une unité d'échange de chaleur qui effectue un échange de chaleur entre un mélange de gaz contenant de l'hydrogène source et un gaz de circulation et de l'eau de réfrigération utilisée pour réguler la température de l'assemblage de pile à combustible. Un régulateur de système ajuste la température de l'eau de réfrigération en contrôlant une unité de régulation de la température sur la base de la température de l'hydrogène source circulant dans une jonction dans laquelle l'hydrogène source et un gaz de circulation sont mélangés de façon à ce que la température d'un mélange d'hydrogène source/recirculé qui est mélangé dans la jonction et qui est introduit dans l'assemblage de pile à combustible soit maintenue à l'intérieur d'une plage de températures contrôlée.

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