Air conditioning system of electric vehicle

Abstract

The invention discloses an air conditioning system of an electric vehicle. The air conditioning system of the electric vehicle comprises a compressor controller, an air conditioning management controller, an air blower, a refrigeration subsystem and a heating subsystem, wherein the refrigeration subsystem and the heating subsystem are respectively controlled through the air conditioning management controller; the compressor controller is mutually connected with a compressor and is used for receiving a speed regulation signal and a starting signal which are output from the air conditioning management controller to realize control on the compressor; the heating subsystem comprises a positive temperature coefficient (PTC) controller and at least two PTC heaters; and the air blower is provided with a warm air volume switch used for regulating warm air volume. The air conditioning system of the electric vehicle is compact in structure and is high in degree of automation. Through installing a plurality of PTC heaters and changing the control mode of the air conditioning system of the electric vehicle, multiple temperature combinations can be realized, and the requirement in real life is met. Meanwhile, the problem that refrigeration surplus can be possibly caused because a traditional vehicle-mounted air conditioner of the electric vehicle is operated by one refrigerating output all the time is avoided, energy sources can be saved, and the safety of the air conditioning system is enhanced.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control, in particular to an electric vehicle air conditioning system. Background technique [0002] The air-conditioning system of electric vehicles is different from fuel vehicles, and the differences are mainly reflected in the following aspects: the compressor is driven by an electric motor, the displacement of the compressor is small, the speed is high, the motor needs to be driven by a special controller, and the cooling capacity is not affected by the driving conditions, so The design of electric vehicle air conditioners is quite different from that of fuel vehicles. In view of the difficulty in adjusting the cooling capacity of the existing electric vehicle air conditioning system, other heat sources must be introduced for defrosting and defogging of electric vehicles, and the heat must be safely controlled. , it is necessary to design a new type of electric vehicle air conditioni...

AI Technical Summary

Problems solved by technology

[0002] The air-conditioning system of electric vehicles is different from fuel vehicles, and the differences are mainly reflected in the following aspects: the compressor is driven by an electric motor, the displacement of the compressor is small, the speed is high, the motor needs to be driven by a special controller, and the cooling capacity is not affected by the driving conditions, so The design of el

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