| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten the time required for starting, in a fuel cell system. <P>SOLUTION: A fuel cell system 10 comprises a secondary battery 12, a system main relay 20, a 12 VDC/DC converter 22 connected to a 12 V battery 24, a secondary battery side smoothing capacitor 30, a current sensor 32 for detecting a current of the secondary battery side smoothing capacitor 30, a voltage converter 36 of bidirectional operation, a relay 38 for a fuel cell, a fuel cell side smoothing capacitor 40, and a fuel cell 42. An auxiliary unit 34 for a fuel cell is connected between the secondary battery 12 and the voltage converter 36. A control part 50 judges state of the 12 V battery 24 using a voltage sensor 28, and judges welding using a current sensor 32. Since the auxiliary unit 34 for a fuel cell can be started after execution of secondary battery side precharge, a fuel cell starting command is issued at that timing. <P>COPYRIGHT: (C)2008,JPO&INPIT |
