| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system which can continue the operation of a fuel cell by preventing the drying of the fuel cell. <P>SOLUTION: The fuel cell system 1 includes: a fuel cell 10 which generates by the reaction of hydrogen gas and air; an air pump 22 which supplies air to the fuel cell 10 through an air supply passage 43; a film humidifier 24 which is prepared in the air supply passage 43, collects moisture contained in air ejected into an air exhaust passage 44 from the fuel cell 10, and adds the collected moisture to air of the air supply passage 43; an air humidity estimator 31 which estimates humidity of cathode gas of the air supply passage 43; an air humidity elevation request section 32 which outputs an air humidity elevation request signal for requesting elevation of humidity of air of the air supply passage 43 based on humidity estimated by the air humidity estimator 31; and an air pump 22 and back-pressure regulating valve 25 which control pressure of air of the air supply passage 43 based on the air humidity elevation request signal. <P>COPYRIGHT: (C)2009,JPO&INPIT |
