Method for fuel cell assembly with springs and pins
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United States of America Patent
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Jan 24, 2012
Grant Date -
Jun 5, 2008
app pub date -
Nov 30, 2006
filing date -
Nov 30, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A spring loaded direct oxidation fuel cell assembly reduces the effects of precompression relaxation. A near flat spring and a distribution plate form a spring assembly that is disposed between a membrane electrode assembly and one of the current collectors in the fuel cell. The components are assembled into a fuel cell assembly and are precompressed, and a spring yielding process is performed. While precompression is being applied, a set of pins and a plastic frame are insert molded around the fuel cell assembly to hold the components in place. Subsequently, as the precompression relaxes, the spring assembly forces act to maintain an evenly distributed compression on the MEA, thereby compensating for the loss of precompression. A related method of manufacturing a fuel cell assembly is provided.
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