Electric automobile heat pump air conditioning system

Abstract

The invention relates to the technical field of electric automobiles, in particular to an electric automobile heat pump air conditioning system. The electric automobile heat pump air conditioning system comprises a heat pump air conditioning unit and a motor electric control cooling unit, wherein the heat pump air conditioning unit comprises an enhanced heating loop which is formed by connecting an electric compressor, an automobile interior condenser, an automobile exterior heat exchanger, a water cooled heat exchanger and a gas-liquid separator in sequence; and the motor electric control cooling unit comprises a motor electric control waste heat recovery loop which is formed by connecting a first electronic water pump, the water-cooled heat exchanger, a motor and a motor controller and afirst expansion water kettle in sequence. The water-cooled heat exchanger is simultaneously arranged in the enhanced heating loop and the motor electric control waste heat recovery loop; after a first cooling liquid absorbs heat in the motor and the motor controller, heat exchanging is carried out between the water-cooled heat exchanger and a refrigerant, and the refrigerant after absorbing the heat flows in the enhanced heating loop again. As the water-cooled heat exchanger is arranged, the motor electric control waste heat is sufficiently absorbed to further improve the heating performanceof the air conditioning system.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a heat pump air-conditioning system for electric vehicles. Background technique [0002] Nowadays, the application of electric vehicles is more and more extensive. In order to pursue a more comfortable interior environment, the air conditioning system in electric vehicles is very important. The heat pump air-conditioning system is energy-saving and efficient, and integrates heating and cooling, which can well meet the safety and comfort requirements of electric vehicles. Especially under the trend of energy saving and emission reduction, electric vehicle heat pump air conditioning system has become the key development object of various research institutions. [0003] In the prior art, the heat pump air-conditioning system of an electric vehicle can basically realize various modes such as cooling, heating, and dehumidification. During the operation of the entire air-co...

AI Technical Summary

Problems solved by technology

During the operation of the entire air-conditioning system of an electric vehicle, the motor and motor controller of the vehicle will also generate heat during the working process. As an evaporator, the external heat exchanger can only absorb heat from the external environment, and the absorbed heat will follow the The ambient temperature decreases, so the waste heat generated by the motor and motor controller is not well utilized, resulting in a decrease in the heating performance of the system

[0004] Therefore, it is necessary to propose a heat pump air-conditioning system for electric vehicles that can solve the problem that the waste heat generated by the motor and motor controller of the electric vehicle cannot be fully utilized in the prior art

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