| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress power consumption of a low-voltage battery and extend a range of emergency retreating travel at an occurrence of a failure in a DC/DC converter in a vehicle power supply system. <P>SOLUTION: An onboard electrical load (7) that is indispensable for running a vehicle is directly connected to a low-voltage battery (4). onboard electrical loads (8 and 9) that are not indispensable for running a vehicle are connected to the low-voltage battery (4) via power supply blocking means (10 and 11). A control means (12) is provided that makes the power supply blocking means (10 and 11) block power supply to the onboard electrical loads (8 and 9) that are not indispensable for running a vehicle, when a failure detecting means (13) detects a failure in a DC/DC converter (5). <P>COPYRIGHT: (C)2012,JPO&INPIT |
