Integrated thermal management system for electric automobile

Abstract

The invention provides an integrated thermal management system for an electric automobile. According to the integrated thermal management system for the electric automobile, quasi-secondary compression can be realized both in winter and summer through the matching connection of hydraulic pipelines and electronic valves, and the heating effect in winter is greatly improved; compared with a traditional vehicle thermal management scheme, the system innovatively replaces an intermediate heat exchanger with a three-channel heat exchanger, a battery coolant is always allowed to participate in an airconditioning system, the number of valves is decreased, the system is simplified, and the requirements on an intelligent control system are lowered. Dual operation in winter and summer can be realized by the device, the cooling efficiency is improved, the consistency of a battery is ensured, thus the service life of a battery pack system is prolonged, meanwhile the problem of difficulty in starting and charging under the low temperature environment is solved, it is ensured that the battery can be operated in a suitable temperature range at different ambient temperature conditions, the cycle life of the battery is prolonged, and thermal comfort for passengers is ensured.

Description

technical field [0001] The invention relates to a thermal management system for a new energy vehicle, in particular to a comprehensive thermal management system for an electric vehicle. Background technique [0002] In order to effectively alleviate the pressure on my country's energy and environment, accelerate the transformation and upgrading of the automobile industry, and improve the international competitiveness of my country's automobile industry, new energy vehicles have developed rapidly in my country in recent years, especially the development potential of pure electric vehicles is huge. New energy electric vehicles mainly rely on a large number of modular battery packs to provide the power required by the vehicle. Under low temperature conditions, it is difficult to charge the battery, and even cannot be charged under extreme conditions, and the capacity of the battery will decay at low temperature. Due to the low ambient temperature, the car air conditioner (Heati...

AI Technical Summary

Problems solved by technology

The traditional automotive air conditioner and battery thermal management system are independent and parallel. The battery thermal management system generally uses air cooling and liquid cooling to dissipate heat, both of which have limitations such as low efficiency

And the use of PTC heating plate and circulation pump in winter will increase the heat transfer loss, increase the additional battery energy consumption, and reduce the mileage of electric vehicles

Images