Electric vehicle air conditioning system, electric vehicle and control method for electric vehicle air conditioning system

Abstract

The invention provides an electric automobile air conditioning system which comprises a compressor, a four-way valve, an extra-automobile heat exchanger, a first intra-automobile heat exchanger, a second intra-automobile heat exchanger, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a first control valve and a second control valve. When the extra-automobile heat exchanger needs to be used for defrosting, a first end opening of the four-way valve communicates with a fourth end opening, a second end opening communicates with a third end opening, and a second branch communicates with the first pipeline and the second pipeline; and the first control valve controls the third pipeline to be connected, the second control valve controls the fourth pipeline to be connected, and a first branch is disconnected from the first pipeline and the second pipeline. The invention further provides an electric automobile and a control method of the electric automobile air conditioning system. By the adoption of the electric automobile air conditioning system, the electric automobile and the control method of the electric automobile air conditioning system, continuous heating in the automobile can be achieved in the defrosting process of the extra-automobile heat exchanger, and the comfort in the automobile is guaranteed.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle air conditioning system, an electric vehicle and a control method for the electric vehicle air conditioning system. Background technique [0002] Compared with traditional internal combustion engines and hybrid vehicles, pure electric vehicles have no engine waste heat to use, and their automotive air conditioning systems generally use a single-cooling air conditioner + PTC (thermistor). When heating in winter, PTC electric heating is used for heating, but the efficiency of PTC electric heating is very low (the highest will not exceed 1), so when the air conditioner is running in heating mode in winter, it needs to consume a lot of electric energy for heating, so It will greatly shorten the cruising range of electric vehicles. Using a heat pump air-conditioning system for heating on pure electric vehicles can overcome the above defects, but the heat...

AI Technical Summary

Problems solved by technology

[0003] In view of the problem that the air conditioning system in the prior art cannot continue heating operation during the defrosting period, the object of the present invention is to provide an electric vehicle air conditioning system, an electric vehicle and a control method for the electric vehicle air conditioning system, so as to ensure the heating during the defrosting period. effect, improve the comfort of the car

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