Cold-warm air interchange system of vehicle air conditioner

Abstract

The invention discloses a cold-warm air interchange system of a vehicle air conditioner. The cold-warm air interchange system comprises an electrically driven compressor, a condenser, a condensation fan, an expansion valve, an evaporator, an evaporation fan and an electronic control system which are connected by a pipeline to be a seal system, wherein the heating is achieved by using the electronic control system to control a four-way valve and an unilateral electromagnetic valve, exchanging the functions of the condenser and the evaporator, and using a heating pump theory to heat, and further adding PTC (phenylthiocarbamide) to heat and compensate in high cold climate. According to the cold-warm air interchange system, the electrically driven compressor plays roles of compressing and transporting refrigerant steam; the electronic control system is used for calculating by a mathematical model and experience data according to the parameters of each sensor (temperature, pressure and so on), to accurately control the rotation speed of the electrically driven compressor, the opening degree of the electronic expansion valve and the reasonable air volume of the fan, so that the optimal work state of the system is kept all the time.

Description

technical field [0001] The invention relates to a vehicle air-conditioning cooling and heating air exchange system for a new energy vehicle used in power electronics, a high-energy motor, cooling and heating energy exchange, and electromechanical integration. Background technique [0002] Known domestic new energy vehicle air-conditioning cooling and heating air exchange systems generally have unstable driving circuits, backward machining equipment, insufficient processing accuracy, low output power, and the energy efficiency ratio of electric compressors is only about 1.3-1.6, so it is difficult to batch enter the market. Only the electric compressor of Denso (DENSON) is more mature, but the price is extremely high and there are additional conditions. There are very few domestic manufacturers of new energy air-conditioning systems with mature technology, and there is no mature control theory and strategy, which makes the energy efficiency ratio of electric air-conditioning...

AI Technical Summary

Problems solved by technology

[0003] In view of the current situation of domestic new energy vehicle air conditioners, the purpose of the present invention is to provide a vehicle air conditioner for cooling and heating, in which the electronic control system accurately controls the speed of the electric compressor, the opening of the electronic expansion valve and the reasonable air volume of the fan according to various sensors. , to solve key components such as electric heating and cooling air-conditioning systems, battery pack thermal management systems, etc., so that the system can always maintain the best working condition

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