Bipolar plate with two-pass anode

H - Electricity – 01 – M

Patent

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Details

H01M 8/02 (2006.01) H01M 4/86 (2006.01)

Patent

CA 2503402

A fuel cell bipolar plate (1) includes first and second plates with ribs defining anode and cathode flow channels. The plates are nested so as to define a plurality of center flow channels (13). First and second edge areas are formed at ends of the plates. A plurality of first internal fuel manifolds (3) is formed in the first edge area and is in fluid communication with the center flow channels (13). A plurality of second internal fuel manifolds (4) is formed in the first edge area and is in fluid communication with the center flow channels and the anode flow channels (16). Aturnaround plenum (21) is formed in the second edge area (6) and is in fluid communication with the center flow channels (13) and the anode flow channels (16).

Une plaque bipolaire pour pile à combustible comprend une première et une deuxième plaques comportant des nervures définissant des canaux d'écoulement anodique et cathodique. Les plaques sont emboîtées de manière à délimiter plusieurs canaux d'écoulement centraux. Les première et deuxième zones de bord sont formées aux extrémités des plaques. Une pluralité de premiers collecteurs de combustible internes est formée dans la première zone de bord; ils sont en communication fluidique avec les canaux d'écoulement centraux. Une pluralité de deuxièmes collecteurs de combustibles internes est formée dans la première zone de bord; ils sont en communication fluidique avec les canaux d'écoulement centraux et les canaux d'écoulement anodiques.

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