| 摘要 |
PROBLEM TO BE SOLVED: To more certainly start a system on a hybrid vehicle.SOLUTION: When it is determined that an engine is a high temperature state, and a battery voltage VB2 of a low voltage battery is less than prescribed voltage VBref (step S110 and S130), and when the battery voltage VB 2 cannot use the electric power from the high voltage battery, converter output improvement control to control a DC/DC converter is executed, so that relief valve open/close control is performed and the voltage becomes a prescribed voltage VBref that is the lower limit of the voltage range that allows system starting afterwards (step S140). As a result, when a system is turned off, relief valve open/close control can be completely executed, and when booting up the system by ignition on, the system startup can be more certainly performed. |
