Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1994-11-28
1996-07-02
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 35, 429 36, 429 37, 429 38, H01M 804, H01M 802
Patent
active
055320732
ABSTRACT:
A fuel cell having a plurality of unit cells stacked in layers, each of the unit cells including an electrolyte and a pair of electrodes, each of the unit cells having a first primary surface and a second primary surface; a plurality of separator elements interposed between the adjacent unit cells, a fuel gas channel being formed on a side of the first primary surface of each of the unit cells and an oxidant gas channel being formed on a side of the second primary surface of each of the unit cells; and manifold portions each of which penetrates the separator elements in a thickness direction and gas-tightly communicates with each of the fuel gas channel and the oxidant gas channel through holes formed in the separator elements. Each of the manifold portions including a plurality of dielectric manifold ring, a plurality of spacer members arranged with the separator elements in a stacking direction and in contact with each other, and a manifold portion fastening mechanism for generating a fastening pressure for pressing the surfaces of the spacer members against surfaces of the associated separator elements. As a result, the surfaces of the spacer members and surfaces of the separator elements are held in mechanical contact with each other by the manifold portion fastening mechanism.
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patent: 4604331 (1986-08-01), Louis
patent: 4692391 (1987-09-01), Hirota
patent: 4963442 (1990-10-01), Marianowski et al.
patent: 4973531 (1990-11-01), Zaima et al.
patent: 5084364 (1992-01-01), Quaadvliet
"Measurement of gas leaks through the contacts between heat resistant alloys and YSZ plate", Naoya Tomita et al., Proc. of 33rd Battery Symposium in Japan, pp. 45-46, 1992. (month unknown).
Hirata Haruhiko
Hori Michio
Umiji Toru
Kabushiki Kaisha Toshiba
Kalafut Stephen
Lilley, Jr. Richard H.
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