Integrated electric air conditioning system for hybrid electric vehicle, and control method thereof

Abstract

The invention provides an integrated electric air conditioning system for a hybrid electric vehicle. The system can realize free switching of multiple working modes such as independent refrigeration of an engine compressor, independent refrigeration of an electric compressor, simultaneous refrigeration of an engine and the electric compressor and the like by controlling different electromagnetic valves. The system comprises an engine compressor, a cab loop heat exchanger, an original vehicle condenser, a first thermostatic expansion valve, a battery and an expansion water tank. The medium output end of the cab loop heat exchanger is connected into the medium input end of the engine compressor through a return pipeline. The medium output end of the engine compressor is connected to the medium input end of the original vehicle condenser, and the medium output end of the original vehicle condenser is connected to the first thermostatic expansion valve of the medium input port of the cab loop heat exchanger. The system further comprises an integrated unit, and the integrated unit specifically comprises an electric compressor, a condenser, a heat exchanger, a second thermostatic expansion valve, an electronic water pump, an electromagnetic valve A, an electromagnetic valve B and an electromagnetic valve C.

Description

technical field [0001] The invention relates to the technical field of vehicle wheel drive units, in particular to an integrated electric air-conditioning system for a hybrid vehicle, and the invention also provides a control method for the system. Background technique [0002] The air conditioner for hybrid electric vehicles is a compressor driven by the engine. When the cab needs to be cooled, the engine cannot be shut down, resulting in high energy consumption; while the electric air conditioning system cannot work when the battery temperature is too high to discharge, resulting in the failure of the electric air conditioning system. Contents of the invention [0003] In view of the above problems, the present invention provides an integrated electric air-conditioning system for hybrid electric vehicles, which can realize multiple cooling functions such as separate cooling of the engine compressor, separate cooling of the electric compressor, simultaneous cooling of the ...

AI Technical Summary

Problems solved by technology

[0002] The air conditioner used in hybrid vehicles is a compressor driven by the engine. When the cab needs to be cooled, the engine cannot be shut down, resulting in high energy consumption; while the electric air conditioning system cannot work when the battery temperature is too high to discharge, resulting in the failure of the electric air conditioning system.

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