Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Patent
1993-11-05
1995-03-14
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
429 23, H01M 804
Patent
active
053976550
ABSTRACT:
In a method for adjusting the removal of inert gas from a fuel cell block having a number of fuel cells, a progressive rise in a proportion of inert gas results in a cathode-side or anode-side gas mixture flowing through the fuel cells. An inert-gas-rich gas mixture is drained out as a function of a voltage drop, and the voltage drop is measured between at least two immediately adjacent fuel cells. A fuel cell block includes a number of adjacent fuel cells having electrodes and gas chambers. At least one bipolar plate contacts the electrodes of adjacent fuel cells over a large area. Two spaced-apart contacts are disposed between at least two of the adjacent fuel cells on the at least one bipolar plate. A control element for a gas mixture leaving one of the gas chambers and having a high proportion of inert gas, is adjusted by a voltage drop picked up at the contacts.
REFERENCES:
patent: 3600229 (1971-08-01), Torkildsen
patent: 3697325 (1972-10-01), Baude
patent: 4555452 (1985-11-01), Kahara et al.
Elektrotechnische Zeitschrift--ETZ Bd. 101, Nr. 22, (Nov. 1980), Karl Strasser, "Kompakte Brennstoffzellen- . . . ".
Fuel Cell Handbook, (Appleby et al.), Van Nostrand Reinhold, New York, 1989; pp. 1-7, 440-455 and 544-551 (month unknown).
Sounderdruck aus VDI Buch Nr. 0996, (1990), Brennstoffzellen, pp. 25-46, "Die alkalische Siemens-Brennstoffzelle in Kompaktbauweiss", (month unknown).
Bette Willi
Lersch Josef
Mattejat Arno
Strasser Karl
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Skapars Anthony
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