Functional analysis of lithium battery pack thermal management system

Due to the limited space of the vehicle, the heat accumulation during battery operation will cause uneven temperature everywhere and affect the consistency of the battery cells. Thereby reducing the battery charge and discharge cycle efficiency, affecting the power and energy of the battery, and in severe cases, it will also cause thermal runaway, affecting the safety and reliability of the system. In order to maximize the performance and life of the battery pack, thermal management of the lithium battery pack is required to control the temperature of the battery pack within a reasonable range. ①Accurate measurement and monitoring of battery temperature. ② Effective heat dissipation and ventilation when the temperature of the lithium battery pack is too high. ③Rapid heating under low temperature conditions. ④ Effective ventilation when harmful gases appear. ⑤Ensure the even distribution of the temperature field of the lithium battery pack. The key functions of thermal management of lithium iron phosphate battery pack include: accurate measurement and monitoring of battery temperature; effective heat dissipation when the battery pack temperature is too high; rapid heating under low temperature conditions; ensuring the even distribution of the lithium battery pack temperature field; battery cooling system Matching with other cooling units. The thermal management system of the lithium battery pack is mainly composed of a heat conduction medium, a measurement and control unit and a temperature control device. After the heat-conducting medium comes into contact with the lithium battery pack, the heat generated in the battery system is dissipated to the outside environment through the flow of the medium. The heat-conducting medium mainly includes air, liquid, and phase change materials. The measurement and control unit controls the temperature control equipment to perform corresponding thermal solutions by measuring the real-time temperature of the battery system and the battery module or even the different positions of the monomer. To design a thermal management system for lithium battery packs with good performance, a systematic design approach should be adopted. Reasonably optimize and improve the internal thermal environment of the lithium battery pack to improve its reliability. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What is the difference between alkaline batteries and dry batteries