Plug-in electric vehicle charging interface detection means

The present invention provides an electric vehicle charging electric plug interface detection device, comprising: a vehicle battery, an electric vehicle car plug, the vehicle control device and a charging interface chip. Automotive vehicle comprising an electric plug connection confirmation control terminal and a charging terminal. Charging interface detection chip includes a voltage sampling ports, the PWM signal sampling port and the IO output terminal, the vehicle-mounted battery is connected to the connection confirmation terminal of the charging interface detection chip and an electric automobile vehicle of the plug, a voltage sampling port for actual voltage value confirmation terminal connection detection , a PWM signal to the PWM signal sampling port charge control terminal is detected, the charging interface to transmit voltage detecting chip sampling port and sampling port PWM signal obtained data to a vehicle control apparatus and a vehicle control apparatus transmits the feedback signal via an output terminal IO to the external power supply device. The present invention is based on the connection interfaces are fully charged, the charging process is normally off and charges and attached, to achieve effective control.