Efficient and intelligent heat pump air conditioning system for electric automobile

Abstract

The invention relates to an efficient and intelligent heat pump air conditioning system for an electric automobile. The purpose is that the provided air conditioning system has the characteristics of high efficiency, energy-saving property, low cost and high reliability and heat circulations of an electric automobile drive system and the heat pump air conditioning management system are managed in an integrated way. The technical scheme is that the efficient and intelligent heat pump air conditioning system for the electric automobile is characterized by comprising a motor circulation water main system and an intelligent heat pump air conditioning master controller, wherein the motor circulation water main system is formed in such a way that a water pump, a first three-way solenoid valve, a first electronic expansion valve and a first heat exchanging loop of a motor heat exchanger are in communication with each other in a circulation in sequence through water pipes; circulation water temperature sensors are mounted on the water pipes; and the intelligent heat pump air conditioning master controller obtains the temperature of the circulation water through the circulation water temperature sensors so that the opening degree of the first electronic expansion valve is controlled to realize effective heat radiation of a motor driving system.

Description

technical field [0001] The invention relates to an electric vehicle air conditioning system, in particular to an electric vehicle heat pump air conditioning system for comprehensive thermal management of the electric vehicle. Background technique [0002] At present, electric vehicles generally use PTC auxiliary electric heating to realize the heating function in winter. The heating efficiency is low and the power consumption is large, which seriously affects the cruising range of electric vehicles and causes the efficiency of electric vehicles to decrease in winter compared with summer. Therefore, the air Source heat pump system technology has attracted attention both at home and abroad. [0003] The existing air source heat pump technology does not make full use of the performance of the motor; it does not fully realize the heat recovery of the motor drive system; in winter, especially in the cold regions of Northeast China, under the heating operation, the heat exchange e...

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Problems solved by technology

[0002] At present, electric vehicles generally use PTC auxiliary electric heating to realize the heating function in winter. The heating efficiency is low and the power consumption is large, which seriously affects the cruising range of electric vehicles and causes the efficiency of electric vehicles to decrease in winter compared with summer. Therefore, the air Source heat pump system technology has attracted attention at home and abroad

[0003] The existing air source heat pump technology does not make full use of the performance of the motor; it does not fully realize the heat recovery of the motor drive system; in winter, especially in the cold regions of Northeast China, under the heating operation, the heat exchange energy efficiency ratio of the heat pump is low, and it is easy to frost; In summer, in the cooling mode, the cooling system of the air conditioner cannot be fully used to assist the cooling of the motor drive system

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