Fuel cell stack with integrated alignment means

Details Fuel cell stack with integrated alignment means Fuel cell stack with integrated alignment means

H - Electricity

01

M

H01M 2/00 (2006.01) H01M 2/08 (2006.01) H01M 2/14 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2635348

A fuel cell is formed by alternately stacking separators and sealing gasket- combined membrane electrode assemblies. Each sealing gasket-combined membrane electrode assembly includes a membrane electrode assembly and a sealing gasket portion. One of the sealing gasket portion and the separator has a protrusion formed on each face and extending in a stacked direction in which the separators and the sealling gasket-combined membrane electrode assemblies are stacked. The other of the sealing gasket portion and the separator has a recess in which the protrusion is fitted. The protrusions formed respectively on opposed faces of the successive sealing gasket-combined membrane electrode assemblies or the successive separators are located at different positions.

Pile à combustible formée par empilement alterné de séparateurs et d~ensembles membrane-électrodes à garniture d~étanchéité. Chaque ensemble membrane-électrodes à garniture d~étanchéité comporte un ensemble membrane-électrodes et une garniture d~étanchéité. Un premier élément parmi la garniture d~étanchéité et le séparateur possède, sur chaque face, une protubérance qui s~étend dans la direction de l~empilement des séparateurs et des ensembles membrane-électrodes à garniture d~étanchéité. L~autre élément parmi la garniture d~étanchéité et le séparateur possède un renfoncement dans lequel vient se loger la protubérance. Les protubérances respectivement formées sur des faces opposées des ensembles membrane-électrodes à garniture d~étanchéité successifs ou des séparateurs successifs occupent des positions différentes.

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