| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system in which an increase in electric conductivity of a cooling medium such as cooling water or the like flowing through a cooling passage 10 of a fuel cell can be detected inexpensively. <P>SOLUTION: The fuel cell system is equipped with the fuel cell 1, a main cooling circuit 2 to cool the fuel cell 1 by making the cooling medium flow through the cooling passage 10 of the fuel cell 1, a branch circuit 3 installed by being branched from the main cooling circuit 2 in order to make a part of the cooling medium flowing through the main cooling circuit 2 flow and return the medium to the main cooling circuit 2, a cooling medium treatment part installed in the branch circuit 3 in order to treat the cooling medium flowing in the branch circuit 3, a main cooling circuit temperature detecting means to detect the temperature of the cooling medium temperature flowing in the main cooling circuit 2, a branch circuit temperature detecting means to detect the temperature of the cooling medium flowing in the branch circuit 3 or temperature of the cooling medium treatment part 4, a controlling part 5 to detect an abnormality in the cooling medium amount flowing in the cooling medium treatment part 4 based on a physical amount regarding a temperature difference between the main cooling circuit temperature detected by the main cooling circuit temperature detecting means 20, 21, and the branch circuit temperature detected by the branch cooling circuit temperature detecting means 35. <P>COPYRIGHT: (C)2009,JPO&INPIT |
