Fuel cell assembly
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United States of America Patent
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Issued Date -
Feb 26, 2004
app pub date -
May 14, 2003
filing date -
Nov 15, 2000
priority date (Note) -
Abandoned
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Abstract
The invention relates to a fuel cell assembly with fuel cells arranged in the form of a fuel cell stack. The fuel cells each comprise an anode, a cathode and an electrolyte matrix arranged therebetween, and are separated from one another and electrically contacted by bipolar plates. Current collectors are respectively provided on the electrodes for electrically contacting the same and for guiding combustion gas or cathode gas thereon. In addition, means are provided for supplying and carrying away combustion gas and cathode gas to and from the fuel cells. A means that generates a pretensioning force subjects the fuel cells inside the fuel cell stack to a mutual pretensioning in the longitudinal direction of the fuel cell stack. According to the invention, the fuel cell stack is horizontally arranged when in operation, and the pretensioning force of the fuel cells exerts a uniform force upon all cells, is small and can be variably adapted to the operating state of the fuel cell assembly.
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