Fuel cell humidification system and method

Details Fuel cell humidification system and method Fuel cell humidification system and method

2003-01-28

2009-06-30

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S010000, C429S006000, C204S409000, C204S196030

Reexamination Certificate

active

07553575

ABSTRACT:
One end of an air passage (32) facing a cathode (33B) of a fuel cell (36) forming a fuel cell stack (6) is connected to a first manifold (1A), and the other end is connected to a second manifold (1B). A water-absorbing material (30) is disposed at a position in contact with an air flow in the first manifold (1A) and second manifold (1B). The air is made to circulate according to a humidity state by changing over between a first air flow direction wherein air flows from the first manifold (1A) to the second manifold (1B) via the air passage (32), and a second air flow direction wherein air flows from the second manifold (1B) to the first manifold (1A) via the air passage (32), so a membrane electrolyte is efficiently humidified.

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