Heat pump type automobile air conditioning system

Abstract

The invention discloses a heat pump type automobile air conditioning system, which comprises a main heating loop and a motor waste heat heating loop, wherein the main heating loop comprises a compressor, a first plate type heat exchanger, a first electromagnetic three-way valve, a first electronic expansion valve, a second electromagnetic three-way valve, a vehicle exterior heat exchanger, a thirdelectromagnetic three-way valve, a first three-way valve and a gas-liquid separator, which are connected in sequence; the motor waste heat heating loop comprises a motor, a fourth electromagnetic three-way valve, a second plate type heat exchanger, a fifth electromagnetic three-way valve, a first water pump, a charging system, a power converter and a motor control system, which are connected in sequence, wherein the second plate type heat exchanger is connected to the second electromagnetic three-way valve and the first three-way valve. According to the heat pump type automobile air conditioning system, the waste heat of the motor can be fully utilized for heating, so that the resources are saved.

Description

technical field [0001] The invention relates to the technical field of automobile air-conditioning, and more specifically, the invention relates to a heat pump automobile air-conditioning system. Background technique [0002] In the automotive field, in order to reduce environmental pollution, large-scale development of electric vehicles has become a trend. Realizing the large-scale application of new energy vehicles while comprehensively improving the quality and performance of electric vehicles is one of the mainstream development directions at present. [0003] Pure electric vehicles do not have a fuel engine. In addition to the fact that the compressor cannot continue to be directly driven by the engine, the automotive air-conditioning system cannot continue to use the waste heat of the engine for heating in winter. Currently, most electric vehicles use PTC electric heaters for direct heating, and the efficiency is low, which is significantly reduced. In the long run, it...

AI Technical Summary

Problems solved by technology

[0004] Commonly used automotive air-conditioning systems often use a four-way reversing valve to switch between the cooling and heating modes of the heat pump air-conditioning system. However, this type of heat-pump air-conditioning cannot realize the linked battery heat management function, and in ultra-low temperature conditions, the performance of the heat-pump air-conditioning will deteriorate. It is significantly reduced, and the traditional defrosting method affects the thermal comfort in the car. Therefore, it is necessary to design a heat pump automotive air conditioner to meet the requirements of cooling, heating, ultra-low temperature heating, battery heating / cooling, motor cooling, and defrosting.

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