REPEATING UNIT FOR A FUEL CELL STACK
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United States of America Patent
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Issued Date -
Nov 3, 2011
app pub date -
Oct 29, 2009
filing date -
Jan 26, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A repeating unit (10) for a fuel cell stack comprises a gas conducting region (8) for conducting a first gas (12) to and along an active surface (14). A barrier (16) is located in the gas conducting region. The gas conducting region comprises, at least over the active surface, a plurality of channels (20, 22, 24, 26, 28, 30, 32, 34) for conducting the first gas along the active surface. At least a first channel (26) among the plurality of channels defines a first flow direction at a first point (46) located closest to the barrier and a second flow direction at a second point (48), wherein a first straight line (50) which extends through the first point (46) and is parallel to the first flow direction misses the barrier (16) while a second straight line (52) which extends through the second point (48) and is parallel to the second flow direction intersects the barrier. The barrier (16) can be located upstream or downstream of the active surface (14).
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