A fuel cell arrangement

H - Electricity – 01 – M

Patent

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Details

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

Patent

CA 2602298

A fuel cell arrangement (10) comprises at least one fuel cell module (12), each fuel cell module (12) comprises a plurality of fuel cells (14). Each fuel cell module (12) is hollow and defines a chamber (16). Each fuel cell module (12) is arranged within an inner vessel (24) and the inner vessel (24) is arranged within an outer pressure vessel (28). Means (32) to supply oxidant is arranged to supply oxidant to the space (26) within the inner vessel (24) so as to supply oxidant to the cathode electrodes (22). Means (34) to supply fuel is arranged to supply fuel to the chamber (16) in each fuel cell module (12) so to supply fuel to the anode electrodes (18). The outer pressure vessel (24) is protected from the high temperature environment of the fuel cells (14) by the inner vessel (24). The outer pressure vessel (28) forms the main pressure containment of the arrangement and operates at a lower temperature and operates with a greater safety margin than a single pressure vessel arrangement.

L'invention concerne un ensemble piles à combustible (10) comportant au moins un module (12) de piles, chaque module (12) comprenant une pluralité de piles à combustible (14). Chaque module de piles (12) est creux et définit une chambre (16), il est disposé à l'intérieur d'une cuve interne (24), laquelle se trouve dans une cuve sous pression externe (28). Un dispositif (32) d'alimentation en oxydant est monté pour alimenter en oxydant l'espace (26) à l'intérieur de la cuve interne (24), de façon à alimenter en oxydant les électrodes cathodiques (22). Un dispositif (34) d'alimentation en combustible est monté pour alimenter en combustible la chambre (16) dans chaque module de piles à combustible (12), afin d'alimenter en combustible les électrodes anodiques (18). La cuve sous pression externe (28) est protégée de la haute température environnante des piles à combustible (14) par la cuve interne (24). La cuve sous pression externe (28) est le principal conteneur sous pression de l'ensemble, elle fonctionne à une température inférieure et avec une marge de sécurité accrue relativement à un ensemble comprenant une seule cuve sous pression.

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