| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for detecting abnormality of a DC-DC converter, which improves the accuracy in abnormality detection. SOLUTION: The DC-DC converter 60 is a current resonance type DC-DC converter. The DC-DC converter 60 includes a smoothing circuit 64, and the output voltage smoothed by the smoothing circuit 64 is outputted to an auxiliary battery B2; while, one end of an analog voltage line 72 is connected to the node ND of the smoothing circuit 64, and the other end is connected to the analog input terminal of an HV-ECU70. Then, the HV-ECU70 acquires voltage VP before smoothing, before being smoothed by the smoothing circuit 64, and determines the abnormality of the DC-DC converter 60, based on the voltage waveform of the voltage VP. COPYRIGHT: (C)2007,JPO&INPIT
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