A solid oxide fuel cell stack

H - Electricity – 01 – M

Patent

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Details

H01M 8/24 (2006.01) H01M 8/02 (2006.01) H01M 8/06 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2454281

A solid oxide fuel cell stack (10) comprises a plurality of modules (12). Each module (12) comprises an elongate hollow member (14). Each hollow member (14) has at least one passage (32) extending longitudinally through the hollow member (14) for the flow of reactant. Each hollow member (14) has two parallel flat surfaces (16, 18). At least one of the modules (12A, 12B, 12C) includes a plurality of solid oxide fuel cells (20). The solid oxide fuel cells (20) are arranged on the flat surfaces (16, 18) of the modules (12A, 12B, 12C). At least one end (34) of each module (12) is connected to an end (36) of an adjacent module (12) to allow reactant to flow sequentially through the modules (12). The arrangement of the modules (12) provides compliance in the solid oxide fuel cell stack (10) and thermal and mechanical stresses in the solid oxide fuel cell stack (10) are reduced.

Une pile (10) de cellules électrochimiques à l'oxyde solide comprend une pluralité de modules (12). Chaque module (12) comprend un élément creux allongé (14) et chaque élément creux (14) comporte au moins un passage (32) qui traverse longitudinalement l'élément creux (14) pour l'écoulement du réactant. Chaque élément creux (14) comporte deux surfaces plates parallèles (16, 18). Au moins un des modules (12A, 12B, 12C) comprend une pluralité de cellules électrochimiques (20) à l'oxyde solide. Les cellules électrochimiques (20) à l'oxyde solide sont disposées sur les surfaces plates (16, 18) des modules (12A, 12B, 12C). Au moins une extrémité (34) de chaque module (12) est reliée à une extrémité (36) d'un module adjacent (12) pour permettre au réactant de s'écouler séquentiellement dans les modules (12). La disposition des modules (12) assure la souplesse de la pile (10) de cellules électrochimiques à l'oxyde solide et permet de réduire les contraintes thermiques et mécaniques dans la pile (10) à cellules électrochimiques à l'oxyde solide.

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