Compression assembly for an electrochemical fuel cell stack

Details Compression assembly for an electrochemical fuel cell stack Compression assembly for an electrochemical fuel cell stack

1997-11-25

2000-05-02

Nuzzolillo, Marie

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 35, H01M 802

Patent

active

060570539

ABSTRACT:
An electrochemical fuel cell stack comprises a first end plate, a second end plate, and fuel cell assemblies interposed between the first and second end plates. The stack further includes a compression assembly comprising a compression mechanism and a restraining mechanism. The compression mechanism urges the first end plate towards the second end plate applying an internal compressive force to the fuel cell assemblies, even as the thickness of the fuel cell assemblies changes. The restraining mechanism prevents movement of the first end plate away from the second end plate by preventing deflection of the compression mechanism, which may occur, for example, when internal fluid pressure is increased.

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patent: 5484666 (1996-01-01), Gibb et al.
patent: 5686200 (1997-11-01), Barton et al.
patent: 5716503 (1998-02-01), Dean et al.
patent: 5789091 (1998-08-01), Wozniczka

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