Separator and fuel cell

H - Electricity – 01 – M

Patent

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Details

H01M 2/14 (2006.01) H01M 8/02 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2653306

A separator (41) for use in a fuel cell stack has an anode facing plate (44), a cathode facing plate (42), and an intermediate plate (45). The intermediate plate (45) has an air supply through-hole (452a), an air discharge through-hole (452b), a hydrogen supply through-hole (454a), and a hydrogen discharge through-hole (454b). The intermediate plate (45) also has through-holes (452c1, 452d1, 452e1, and 452f1). The air supply through-hole (452a) is in communication with the through-hole (452c1), the air discharge through-hole (452b) with the through-hole (452d1), the hydrogen supply through-hole (454a) with the through-hole (452e1), and the hydrogen discharge through-hole (454b) with the through-hole (452f1), respectively via communication passages (452c2, 452d2, 452e2, and 452f2) formed in the intermediate plate (45).

L'invention concerne un séparateur (41) destiné à être utilisé dans un empilement de piles à combustible. Ce séparateur comprend une plaque faisant face à l'anode (44), une plaque faisant face à la cathode (42) et une plaque intermédiaire (45). La plaque intermédiaire (45) comporte un trou débouchant d'alimentation en air (452a), un trou débouchant d'évacuation d'air (452b), un trou débouchant d'alimentation en hydrogène (454a) et un trou débouchant d'évacuation d'hydrogène (454b). La plaque intermédiaire (45) comporte également des trous débouchants (452cl, 452dl, 452el et 452fl). Le trou débouchant d'alimentation en air (452a) est en communication avec le trou débouchant 452cl, le trou débouchant d'évacuation d'air (452b) avec le trou débouchant 452dl, le trou débouchant d'alimentation en hydrogène (454a) avec le trou débouchant 452el, et le trou débouchant d'évacuation d'hydrogène (454b) avec le trou débouchant 452fl, par des passages de communication respectifs (452c2, 452d2, 452e2 et 452f2) formés dans la plaque intermédiaire.

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