Electric air-conditioning system with high insulation level of automobile and its opening and closing control method

Abstract

The invention discloses an automobile electric air-conditioning system with a high insulation grade, comprising a compressor, a condenser, an expansion valve, an evaporator, an electromagnetic valve, a non-return valve, an air conditioner controller, a compressor controller and a ternary pressure switch, wherein the compressor, the condenser, the expansion valve and the evaporator are sequentially connected in series to form a closed loop; the electromagnetic valve is connected in series between the compressor and the evaporator; the non-return valve is connected in series between the compressor and the condenser; the air conditioner controller is electrically connected with the electromagnetic valve, and the compressor controller is electrically connected with the compressor; and the ternary pressure switch is connected in series in the closed loop. According to the automobile electric air-conditioning system with a high insulation grade and a control method thereof, provided by the invention, by arranging the electromagnetic valve, the non-return valve and the ternary pressure switch, better control on the quantity of refrigerant mixed liquid in a compressor cavity is realized, the problem in the prior art that electronic parts are soaked in the refrigerant mixed liquid is solved, the insulating property of the air-conditioning system is enhanced, and meanwhile, the safety of the air-conditioning system and personnel is also ensured.

Description

technical field [0001] The invention relates to the technical field of automobile air-conditioning, in particular to an electric air-conditioning system with high insulation level for automobiles and a control method for opening and closing the same. Background technique [0002] Automobile air conditioning system has multiple functions such as cooling, heating, defrosting, defogging, air filtration and humidity control, and is a necessary basic configuration for automobiles. At present, the air-conditioning system on ordinary cars uses pure mechanical kinetic energy to drive the compressor to cool down or use hot water from the engine to heat up, which does not involve the conversion of electric energy, so there is no technical requirement for insulation. For pure electric and hybrid vehicles, the air conditioning system itself is completely driven by pure electricity, and most of them are high-voltage systems, which are related to the safety of personnel and equipment, so ...

AI Technical Summary

Problems solved by technology

The compressors used in the existing electric air-conditioning systems are mostly high-voltage DC electric scroll compressors, which are characterized in that the motor and the scroll pump body are integrated in a closed casing. If the system does not work for a long time, the motor will be soaked in refrigerant and lubricating oil. In the mixed solution composed of oil, when the solution soaks into the exposed terminals inside the compressor, it will cause low insulation problems

Therefore, the existing electric air conditioning system cannot guarantee the insulation under various working conditions

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