ELECTRIC AUTOMOBILE AND ALTERNATING-CURRENT CHARGING POWER SUPPLY CIRCUIT OF AUTOMOBILE CONTROL APPARATUS THEREOF

摘要

Disclosed are an electric vehicle and a power supply circuit for a vehicle control device with alternating current (AC) charging thereof. The power supply circuit for a vehicle control device with alternating current (AC) charging thereof includes a CC signal detection and amplification circuit, a relay and a relay control circuit for controlling the relay. The CC signal of the vehicle charging plug is amplified by the CC signal detection and amplification circuit, and the relay contacts are driven to turn on the power supply terminal of the vehicle control device. Self-lock powering is achieved by the relay control circuit. After it is detected that the vehicle charging plug is turned off, the relay control circuit is turned off and charging is stopped. In the circuit, the relay control circuit is turned off in the case of no charging, and the vehicle control device cannot consume power without power supply. When the charging plug is inserted, the vehicle control device is supplied power with the tumed-on relay. The automatic power supply control of the vehicle control device is achieved without the affection of sampling the charging connection confirmation signal CC, so as to reduce manual operation and improve the operation efficiency and the safety under charging.