SYSTEM FOR PURGING NON-FUEL MATERIAL FROM FUEL CELL ANODES
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United States of America Patent
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Issued Date -
Aug 29, 2013
app pub date -
Mar 28, 2013
filing date -
Jan 29, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fuel cell gas purge system is provided that includes at least one fuel cell, such as a fuel cell stack or a fuel cell array, a fuel supply, and an adjustable fuel cell current load. The system further includes at least one passive purge valve disposed to purge accumulated non-fuel matter in the fuel cell, and operates according to a pressure differential across the valve. The valve can be a passive bi-directional valve, such as a dome valve, or a passive unidirectional valve. Further included is a purge management module that has a purge request module to determine when to increase the pressure of the hydrogen fuel to initiate the purge, and a purge complete module to determine when to adjust the pressure of the hydrogen fuel to complete the purge. The non-fuel matter can include non-fuel gases or condensed water.
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