| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inside humidification type fuel cell system capable of restraining occurrence of flooding by keeping the balance of moisture in a fuel cell regardless of operational conditions or environmental conditions. <P>SOLUTION: A standard pressure setting means 31, a wet condition determining means 32, a target pressure setting means 33, a reaction gas pressure control means 34, and a pure water pressure control means 35 are arranged to a control unit 2. The standard pressure setting means 31 sets the standard pressure of reaction gas and pure water depending on an intended output and temperature of the fuel cell, and the wet condition determining means determines the wet condition of the fuel cell. When the fuel cell is in a water excessive state, the target pressure setting means sets a target pressure by correcting the standard pressure of the reaction gas or the pure water so as to increase pressure difference, and the reaction gas pressure control means 34 and the pure water pressure control means 35 control the operation of a reaction gas supplying system and a pure water supplying system so as to realize the target pressure. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
