Flow field plate with relief ducts for fuel cell stack
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United States of America Patent
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May 13, 2014
Grant Date -
Apr 11, 2013
app pub date -
Oct 10, 2011
filing date -
Oct 10, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Flow field plate constructions for bipolar plates are disclosed for use in fuel cell stacks that are subject to freezing temperatures. In designs having internal coolant flow fields and reactant backfeed ports, relief ducts are provided in the supporting walls surrounding the backfeed ports in order to allow for ice formation and thus prevent cracking of the plates.
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