Fuel cell and fuel cell fastening device

H - Electricity – 01 – M

Patent

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Details

H01M 8/24 (2006.01)

Patent

CA 2678475

A fuel cell (10) includes a fuel cell stack (50) in which a plurality of fuel cell units are stacked on one another, a pair of end plates (61, 61b, 63, 63b) respectively contact both ends of the fuel cell stack in a direction (Ds) in which the plurality of fuel cell units are stacked, and a side member (62, 62b, 62g) that extends in the stacking direction and is disposed between the end plates. The fuel cell further includes a connecting bolt portion, having a bolt shank (644, 624g) that penetrates one of the end plates substantially along the stacking direction. The connecting bolt portion connects the one of the end plates and the side member. The fuel cell further includes a cushion joint (66, 66a, 66b, 66c, 66d, 66e, 66f) disposed between the side member and one of the end plates, and through which the bolt shank passes.

L'invention concerne une pile à combustible (10) qui comprend un empilement de pile à combustible (50) dans lequel plusieurs unités de pile à combustible sont empilées les unes sur les autres, une paire de plaques d'extrémité (61, 61b, 63, 63b) en contact respectivement avec les deux extrémités de l'empilement de pile à combustible dans une direction (Ds) dans laquelle les différentes unités de pile à combustible sont empilées, et un élément latéral (62, 62b, 62g) qui s'étend dans la direction d'empilement et est disposé entre les plaques d'extrémité. La pile à combustible comprend en outre une partie de boulon de connexion, ayant un corps de boulon (644, 624g) qui pénètre dans l'une des plaques d'extrémité sensiblement le long de la direction d'empilement. La partie de boulon de connexion connecte l'une des plaques d'extrémité et l'élément latéral. La pile à combustible comprend en outre un joint plat de friction (66, 66a, 66b, 66c, 66d, 66e, 66f) disposé entre l'élément latéral et l'une des plaques d'extrémité, et à travers lequel passe le corps de boulon.

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