| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply system capable of determining the short-circuit fault of a battery in a short time. <P>SOLUTION: The power supply system includes: an on-vehicle low-voltage system battery 1; an on-vehicle high-voltage system battery 2; a DC-DC converter 3 that outputs a charging current of low-voltage system battery 1 based on the power supply of the high-voltage system battery 2 and/or an external power supply source 25 that can charge the high-voltage system battery 2; and an ECU 4 that determines the short-circuit fault of the low-voltage system battery 1 by stopping the output of DC-DC converter 3 for a predetermined time in the condition that the external power supply source 25 is connected with a vehicle to discharge the low-voltage system battery 1. <P>COPYRIGHT: (C)2011,JPO&INPIT |
