Electric automobile thermal management system

Abstract

The invention provides an electric automobile thermal management system. The system is characterized by comprising a vapor compression subsystem and an adsorption subsystem. The system has the advantages of simple structure, high heat utilization ratio and good reliability; in addition, the system can realize efficient heat dissipation of a battery pack; when the battery pack is at a working state, part of heat is absorbed by an adsorption bed and used for driving desorption effect in the adsorption bed; the rest of heat is directly transmitted to a refrigerant through the adsorption bed to betaken away by the refrigerant. Compared with the traditional thermal dissipation system, the system has the advantages that the power consumption is small, the heat transfer efficiency is high, and the performance is superior; moreover, when the environment temperature is lower than minimum suitable operating temperature of the battery pack, the system can perform effective thermal insulation onthe battery pack, and the process does not consume electric energy; in addition, the waste heat of the battery pack is utilized to drive an adsorption system, a certain refrigerating / heating effect isproduced, compressor power consumption can be reduced, and the endurance mileage of an electric automobile is increased.

Description

technical field [0001] The present invention relates to the field of thermal management of electric vehicles, in particular to a thermal management system for electric vehicles, in particular to a composite electric vehicle thermal management system that combines an adsorption system and a vapor compression system to control both the temperature of the battery pack and the temperature of the cabin. Background technique [0002] Under the background of deepening global energy crisis and increasingly prominent environmental problems, electric vehicles have developed rapidly in recent years. Due to the large difference in structure between electric vehicles and traditional vehicles, their thermal management systems also need to be improved accordingly. Among them, the operating temperature of the car battery pack has a great influence on its performance, so ensuring that the car battery pack works in a suitable temperature range is a major goal of electric vehicle thermal manag...

AI Technical Summary

Problems solved by technology

However, the system pipeline structure and control system are relatively complex, and the waste heat utilization of battery packs and motors can only be realized under heating conditions

Furthermore, the system has not yet completely got rid of the inefficient heating method of PTC, and it is impossible to effectively preheat the battery pack in a low temperature environment

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