Whole vehicle integrated thermal management system for pure electric vehicle

Abstract

The invention discloses a whole vehicle integrated thermal management system for a pure electric vehicle, and aims to solve the problems of low efficiency, high energy consumption, inharmonious thermal load of each system, high battery working load and low energy utilization rate during low-temperature heating of a traditional thermal management system of the pure electric vehicle. The vehicle integrated thermal management system integrates a passenger compartment thermal management system, a battery thermal management system and a motor / electric control thermal management system, performs working mode division and circulation loop planning on the premise of meeting system functions and passenger requirements, and integrates control information of the working modes and parts to determine a reasonable vehicle thermal management combination mode; therefore, the integrated comprehensive management of each subsystem is realized. Cooperative management between systems can be achieved, coordination of the thermal load relation of all parts of the vehicle is facilitated, battery energy is efficiently utilized, the integration and systematization degree of the vehicle can be improved, assembly of the whole vehicle is simpler and more convenient, light weight of the whole vehicle is facilitated, and the manufacturing cost of the whole vehicle is reduced.

Description

technical field [0001] The invention relates to the technical field of thermal management of new energy vehicles, in particular to a vehicle-integrated thermal management system for pure electric vehicles. Background technique [0002] New energy vehicles have developed rapidly due to the promulgation of relevant national policies. Among them, pure electric vehicles have become the darling of new energy vehicles because of their advantages of zero emission, low noise, and energy saving. However, their development is limited by battery capacity and its high / low temperature. Influenced by the characteristics of the state, and among all accessories, the air conditioning system consumes the most power. Due to the cancellation of the engine, pure electric vehicles usually use PTC heaters when heating at low temperatures. Correlation analysis shows that when using PTC for heating It will consume 30% to 40% of the total energy of the battery, so this heating method has seriously af...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a whole-vehicle integrated thermal management system for pure electric vehicles, which can realize integrated and comprehensive management of the passenger compartment, battery, motor / electric control system, and is beneficial to solve the problem of low-temperature heating of pure electric vehicles. At the same time, it can also improve the integration and systematization of pure electric vehicles, making the assembly of the whole vehicle easier and more convenient, which is conducive to the lightweight of the whole vehicle and reduces the manufacturing cost of the whole vehicle

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