Power battery air heat management system for pure electric vehicle and operating method of system

Abstract

The invention relates to a power battery air heat management system for a pure electric vehicle and an operating method of the system. The power battery air heat management system for the pure electric vehicle comprises an air distribution pipeline connected with a power battery pack box, a temperature sensor and a battery management system all-in-one machine, wherein one end of the air distribution pipeline is sequentially connected with a heater, an air pump, an air storage tank, a two-position three-way electromagnetic directional valve E, a cooler, a two-position three-way electromagnetic directional valve F and a two-position two-way electromagnetic directional valve; the two-position three-way electromagnetic directional valve E is connected with the two-position three-way electromagnetic directional valve F through a pipeline; and the other end of the air distribution pipeline is sequentially connected with a two-position three-way electromagnetic directional valve A and the two-position two-way electromagnetic directional valve. The power battery air heat management system disclosed by the invention has multiple temperature regulation modes, is capable of performing corresponding mode selection aiming at different battery conditions, realizing reasonable and fine management of the power battery and realizing automatic switch and control of multiple modes according to the temperature change in the battery box, and has the advantages of accurate adjustment, rapid switch and the like.

Description

technical field [0001] The invention relates to a pure electric vehicle power battery air heat management system and a working method thereof, belonging to the technical field of electric vehicles. Background technique [0002] With the rapid development of the economy, the global energy shortage and environmental pollution are becoming more and more serious. The development of pure electric vehicles has become an effective way to solve this problem. As the core component that restricts the development of electric vehicles, power batteries have always been a hot spot that many R&D and production units are rushing to invest in. Among them, thermal management of power battery has become one of the key technologies. [0003] The current battery thermal management methods for engineering applications mainly include air cooling and liquid cooling. The structure of the liquid cooling system is complex, the mass is large, it is easy to short circuit, and the cooling medium is eas...

AI Technical Summary

Problems solved by technology

[0004] Most of the air cooling solutions currently used are relatively simple, and some of them expose the battery to the air for natural cooling, which cannot meet the needs of power battery thermal management

The cooling scheme of some power batteries adopts constant forced cooling, which cannot be cooled according to the temperature change of the battery, which increases the extra consumption of battery power and has poor energy saving effect

Images