CONTROL SYSTEM FOR A PLUG-IN HYBRID VEHICLE

摘要

A control system for a plug-in hybrid vehicle includes a drive system including a starter motor, a transverse engine, and a motor/generator, and a power supply system including a high voltage battery, a capacitor, and a hybrid control module that controls charging and discharging of the capacitor. A cell voltage monitor for detecting the voltage of the capacitor is provided, the control system being capable of normal external charging and quick external charging of the high voltage battery. The hybrid control module starts the starter, performs charge and discharge control, and maintains a capacitor voltage at and above a starter start-up enabling voltage at which it is possible to start the starter during ignition off and external charging is set to the quick external charging.

主权项

1. A control system for a plug-in hybrid vehicle having a drive system including a starter motor, an engine, and a motor/generator, and a power supply system including a high voltage battery representing power supply of the motor/generator, a capacitor representing power supply of the starter motor, and a capacitor charge and discharge control unit that controls charging and discharging of the capacitor, the high voltage battery being chargeable in an external charging mode by both normal external charging and quick external charging, the control system comprising:
an engine start control unit configured to crank the engine for start-up using the starter motor powered by the capacitor; and a capacitor voltage detection unit configured to detect voltage of the capacitor, the capacitor charging and discharging control unit being configured to maintain the capacitor voltage at and above a starter start-up enabling voltage at which the starter start-up is possible when the external charging is carried out by quick charging during ignition off.