Manifold seal structure for fuel cell stack

Details Manifold seal structure for fuel cell stack Manifold seal structure for fuel cell stack

1986-12-03

1988-04-19

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 37, 429 38, 220378, H01M 824

Patent

active

047389052

ABSTRACT:
The seal between the sides of a fuel cell stack and the gas manifolds is improved by adding a mechanical interlock between the adhesive sealing strip and the abutting surface of the manifolds. The adhesive is a material which can flow to some extent when under compression, and the mechanical interlock is formed providing small openings in the portion of the manifold which abuts the adhesive strip. When the manifolds are pressed against the adhesive strips, the latter will flow into and through the manifold openings to form buttons or ribs which mechanically interlock with the manifolds. These buttons or ribs increase the bond between the manifolds and adhesive, which previously relied solely on the adhesive nature of the adhesive.

REFERENCES:
patent: 4212929 (1980-07-01), Grevstad et al.
patent: 4345009 (1982-08-01), Fahle et al.
patent: 4374185 (1983-02-01), Powers et al.
patent: 4588105 (1986-05-01), Schmitz et al.
patent: 4623596 (1986-11-01), Kamoshita

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