| 摘要 |
<P>PROBLEM TO BE SOLVED: To appropriately control the humidification amount of a fuel gas while downsizing a humidification device for humidifying the fuel gas supplied to the side of a fuel electrode. <P>SOLUTION: An anode humidification device 12 is interlaid on an air exhaust passage L5 being a passage for a cathode off-gas from an oxidizer electrode 3, and interlaid on a hydrogen supply passage L1 being a passage for hydrogen supplied to the fuel electrode 2, and executes moisture exchange between the cathode off-gas and the supplied hydrogen. A cathode three-way valve 22 is arranged on the air exhaust passage L5 on the upstream side relative to the anode humidification device 12, and distributes air exhausted from the oxidizer electrode 3 to the side of an anode humidification means and an intermediate passage L6 different from the air exhaust passage L5, and its distribution quantity can be adjusted. A controller adjusts a humidification amount to hydrogen supplied to the fuel electrode 2 by controlling the distribution quantity by the cathode three-way valve 22 in response to the operation condition of a fuel cell stack 1. <P>COPYRIGHT: (C)2008,JPO&INPIT |
