| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply control device of a vehicle that can properly suppress characteristic change of an auxiliary machine when starting an internal combustion engine. <P>SOLUTION: The power supply control device of vehicle is applied to a vehicle which has: an internal combustion engine; a motor which starts the internal combustion engine using power of a battery; and an auxiliary machine which has characteristics changing an operation state with voltage, includes: an auxiliary machine battery which outputs power supply voltage lower than the battery, and drives the auxiliary machine; a voltage converter which is connected with the battery and the auxiliary machine battery, and performs voltage conversion; and a voltage target lower limit setting unit which changes the lower limit set to a voltage target value of the voltage converter according to whether the auxiliary machine operates in starting the internal combustion engine, Thereby, the characteristic change of the auxiliary machine when starting the internal combustion engine can be properly suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
