Water-circulating-type thermal energy comprehensive utilization thermal management system for electric vehicle

Abstract

The invention relates to a water-circulating-type thermal energy comprehensive utilization thermal management system for an electric vehicle, the vehicle comprising the thermal management system and an operation method of the thermal management system. The water-circulating-type thermal energy comprehensive utilization thermal management system for the electric vehicle comprises a refrigerant circulating loop and further comprises a water circulating loop. The refrigerant circulating loop comprises a refrigerant circulating primary road and two refrigerant circulating branches; an electronic compressor and a water-cooled condenser are arranged on the refrigerant circulating primary road; the first refrigerant circulating branch is provided with an evaporator electronic expansion valve andan air conditioning evaporator; and the second refrigerant circulating branch is provided with a water-cooled heat exchanger electronic expansion valve and a water-cooled heat exchanger. The water circulating loop comprises a water circulating primary road and at least two water circulating branches; the first water circulating branch conducts heat exchange with the water-cooled heat exchanger forcooling a battery pack; and the second water circulating branch conducts heat exchange with the water-cooled condenser for heating a passenger compartment. The water circulating loop is additionallyarranged in the thermal management system, the two branches of the water circulating loop conduct heat exchange with a refrigerant of an air conditioning system, thus the advantage of the high air conditioning refrigeration efficiency can be given into full play, thermal energy generated by other parts of the vehicle is fully utilized, and energy is saved.

Description

technical field [0001] The present invention relates to the field of new energy vehicles, in particular to thermal management of new energy vehicles, in particular to a water circulation type thermal energy comprehensive utilization thermal management system for electric vehicles. Background technique [0002] With the current increasingly prominent environmental problems, the rise of new energy vehicles has become an inevitable trend of social development. It can not only reduce people's dependence on fossil fuels, but also reduce vehicle exhaust emissions and effectively improve environmental quality. At present, electric vehicles are more and more accepted by people, and the sales volume is also increasing. Vehicle power battery technology is one of the key technologies in new energy vehicles. The performance of vehicle power batteries directly affects the performance of new energy vehicles. In the development process of new energy vehicles, battery life has become one of...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of insufficient heating and cooling capacity of electric vehicles in the prior art, the present invention proposes a thermal management system for comprehensive utilization of water circulation heat energy for electric vehicles, which follows the structure of traditional automotive air conditioners and adds a water circulation loop to The traditional automobile air conditioner cooperates with the water circulation circuit, and can also add a heat pump evaporator to exchange heat with the external environment; only by controlling the switching of a few valves, the heat generated by the vehicle during use can be fully utilized, thereby greatly reducing the time spent on the vehicle. The extra power required for temperature adjustment during use, and greatly improves the heating and cooling efficiency, achieves the purpose of saving energy and reducing costs

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