Alleviation of thermal runaway propagation in thermal management modules using aerogel felt coupled with flame-retarded phase change material. (15th November 2019)

• Record Type: Journal Article
• Authors: Weng, Jingwen; Ouyang, Dongxu; Yang, Xiaoqing; Chen, Mingyi; Zhang, Guoqing; Wang, Jian
• Is Part Of: Energy conversion and management. Volume 200(2019)
• Publication Date: 2019-11-15
• Subjects: Lithium-ion battery safety -- Battery thermal management -- Thermal runaway -- PCM -- Aerogel; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2019.112071
• Languages: English
• ISSNs: 0196-8904

Abstract

Highlights: A dual-functional battery module was designed using aerogel felt coupled with PCM. Thermal behaviors of the battery modules with PCM and aerogel were studied. Evaluation of battery modules were conducted from two aspects simultaneously. Abstract: In view of the flammability of phase change materials (PCMs), a safer structure design for thermal insulation protection is crucial in a PCM-based battery thermal management system. In this work, a series of experiments is performed on battery modules with and without PCM and/or aerogel to investigate their heat dissipation capability and thermal insulation capability in both thermal runaway tests and cycling tests. The results demonstrate that the PCM added with expandable graphite considerably inhibits the combustion flame and lowers the peak temperature of battery modules; however, it accelerates the thermal runaway propagation speed. In comparison, the aerogel felt exhibits excellent performance in delaying battery thermal runaway. Based on the foregoing, an optimized dual-functional battery module is proposed. The module combines the strengths of the PCM and aerogel, and its thermal behaviors are explored via proper analysis with experimental verification.