Automobile heat management system and battery electric vehicle

Abstract

The invention provides an automobile heat management system and a battery electric vehicle and relates to the technical field of electric automobiles. The battery electric vehicle comprises the aboveautomobile heat management system. In the automobile heat management system, a refrigerating agent subsystem, a battery heat management subsystem and an electric drive cooling subsystem are all connected to a heat exchanger; the refrigerating agent subsystem is used for refrigerating a passenger compartment or used for releasing heat to the heat exchanger or absorbing heat from the heat exchanger;the battery heat management subsystem is used for absorbing heat from the heat exchanger and heating a battery pack or used for refrigerating the battery pack; and the electric drive cooling subsystem is used for refrigerating an automobile electric drive device or used for heating the passenger compartment or used for releasing heat to the heat exchanger. The heating capacity and the refrigerating capacity of the automobile heat management system are high, the energy use rate is high, and cost is low.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an automobile thermal management system and a pure electric vehicle. Background technique [0002] With the continuous consumption of non-renewable resources and increasing environmental pollution, the global automobile industry is accelerating its transformation to electrification. Pure electric vehicles have the advantages of light weight, zero fuel consumption, and zero emissions. However, the biggest shortcoming of the current pure electric vehicles is that the cruising range is too short, and the working environment of the battery pack is very harsh. The ambient temperature is too high or too low, which greatly affects the working performance of the battery, and even makes the battery unable to charge and discharge. In this regard, the temperature of the battery is usually controlled by adding a thermal management system, but the existing thermal management system ...

AI Technical Summary

Problems solved by technology

[0003] 1. Some thermal management systems simply use cold air to cool the battery, the cooling efficiency is low, and in most cases, the cold air can no longer meet the cooling needs of the battery

[0004] 2. Some thermal management systems are independent of the air-conditioning system in electric vehicles. The thermal management system requires many components, takes up a lot of space, and has high manufacturing costs.

[0005] 3. The energy utilization rate is not high. For example, the heat generated by the electric motor and other equipment in the electric vehicle is not used reasonably, and the energy saving effect is relatively poor.

[0006] 4. The heating or cooling capacity of the thermal management system is not strong, which cannot meet the temperature requirements of the battery under various working conditions

Images