Air-conditioner control system and method for electric vehicle

The present invention provides an air conditioning control system of an electric vehicle, comprising: a vehicle controller for determining whether or not the vehicle state satisfies an electric vehicle air conditioner turned on requirements; a temperature sensor for measuring the temperature of the compressor electric vehicle; MV a switch for determining the pressure conditions within the compressor, when the pressure within the compressor is higher than a predetermined pressure threshold, the pressure switch is turned on; and air-conditioning controller, the controller is connected to the vehicle, a temperature sensor and a medium-voltage switchgear for receiving a cooling or heating requesting user input, and the vehicle controller in accordance with the state determination result, the measurement results of temperature sensors and pressure switches, the controller controls the compressor, fan, and air conditioning cooling PTC heater. The invention also proposes an air conditioning control method for an electric vehicle. The present invention is an air conditioning system by increasing the control air-conditioning controller, the controller process reduces the workload of the vehicle information. Moreover, the versatility of the vehicle controller, reduce production costs.