Heat exchange device of air conditioner of new energy automobile and control method thereof

Abstract

The invention relates to the technical field of new energy automobiles and discloses a heat exchange device of an air conditioner of a new energy automobile and a control method thereof. The system comprises an external heat exchanger 01, an internal heat exchanger 02, an internal heat exchanger 03, a drying filter 04, a gas liquid separator 05, a compressor 06, a bidirectional throttle expansion valve 11, a four-way valve 12, a one-way valve 13, a branch 21, a branch 22 and an air distribution box 23, wherein the compressor motor is driven by a direct current frequency converting control technology, and a compressor operation signal and a control signal are transmitted by means of CAN communication. The control method mainly comprises the following steps of: initializing a compressor controller; monitoring the compressor state; controlling operation of the compressor and the like. With adoption of a three-heat-exchanger structure, the dimensions of flat tubes and fins are more compact and the heat exchangers are lighter; by means of the direct current frequency converting control technology, the energy efficiency ratio of the air conditioner is increased, and electric energy is saved; and by adopting a CAN bus technology, electric connection is simpler and more reliable.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, and more particularly relates to a new energy vehicle air conditioning heat exchange system and a control method thereof. Background technique [0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as their power source. The development of new energy vehicles in my country has gone through two stages. The first stage is to develop the new energy vehicle market based on the development direction of hybrid electric vehicles, supplemented by fuel cell vehicles and other new energy vehicles; the second stage is to gradually replace hybrid vehicles with pure electric vehicles on the basis of mature pure electric vehicle technology. Power and fuel cell vehicles to achieve zero emissions from new energy vehicles. [0003] As an important part of new energy vehicles, the air conditioning system shoulders the important task of supporting the development of the ne...

AI Technical Summary

Problems solved by technology

[0006] In the existing research results and public literature, a new energy vehicle air-conditioning heat exchange system and its control method have not yet been found. It adopts a three-heat exchanger structure, DC frequency conversion control and CAN bus technology, and has lighter weight and higher energy efficiency. The advantages of higher height, simpler and more reliable connection

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