Vehicle and control method of vehicle

摘要

A vehicle uses electric power from a mounted power storage device to drive a motor generator by a PCU to generate traction driving force. The vehicle can execute, as a function to discharge residual electric charge from a capacitor in PCU, MG discharging in which current is applied to the motor generator while preventing generation of torque for discharging, and PCU discharging through the conduction loss of switching elements in the PCU for discharging. In an event of detecting collision of the vehicle, an HV-ECU executes PCU discharging by priority, and executes MG discharging when the voltage of the capacitor is high.

主权项

1. A vehicle capable of generating traction driving force using electric power from a power storage device mounted on the vehicle, the vehicle comprising:
a load device, a driving device configured to convert the electric power from the power storage device to drive the load device, a first control device configured to control the driving device, and a collision detection unit configured to detect collision of the vehicle, the driving device including an inverter having switching elements, and configured to convert DC power from the power storage device into AC power to drive the load device, a capacitor connected to a direct current side terminal of the inverter, a second control device capable of transmitting and receiving a signal to and from the first control device, and configured to control the switching elements based on a command from the first control device, and a discharge circuit configured to carry out a first discharging operation causing residual electric charge in the capacitor to be consumed within the driving device based on a command from the second control device in an event of detecting collision of the vehicle by the collision detection unit, the first control device configured to provide to the second control device a command to cause the second control device to execute a second discharging operation causing current to be applied to the load device for discharging residual electric charge from the capacitor when a voltage of the capacitor exceeds a predetermined threshold value in the event of detecting collision of the vehicle by the collision detection unit.