Author(s)

Xiaozhu Wu

Corresponding Author

Xiaozhu Wu

Abstract

With the development of the new energy industry, lithium batteries are prone to performance degradation and thermal runaway risks due to heat accumulation exceeding the optimal operating range (25-40℃) during the charging and discharging process, and traditional thermal management methods have limitations. Although Phase Change Materials (PCM) have advantages such as high heat storage density, they still face problems such as low thermal conductivity and easy leakage. This paper first explains on the heat generation mechanism of lithium batteries and the core characteristics of PCM, then proposes optimization strategies of PCM itself from four aspects: improving thermal conductivity, suppressing leakage, regulating phase change characteristics, and enhancing cycling performance, and further presents collaborative optimization schemes (structure, packaging, layout, maintenance) corresponding to design and thermal management systems. Finally, evaluation indicators such as temperature control effect and evaluation methods combining experiments and simulations are clarified. The research provides theoretical support for the design of lithium battery thermal management systems and contributes to the safe and stable development of the new energy industry.

Keywords

Lithium Battery Thermal Management System; Phase Change Materials; Optimization Application Strategy; Collaborative Optimization