Experimental investigation of the flame retardant and form-stable composite phase change materials for a power battery thermal management system

Jiangyun Zhang, Xinxi Li, Guoqing Zhang, Hongwei Wu, Zhonghao Rao, Jianwei Guo, Dequan Zhou

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
40 Downloads (Pure)

Abstract

An efficient battery thermal management system (BTMS) will undoubtedlypromote the performance and lifespan of battery packs. In this study, a novelflame-retarded composite PCMs composed by paraffin (PA), expanded graphite (EG), ammonium polyphosphate (APP), red phosphorus (RP) and epoxy resin (ER) has been proposed for battery module. The thermophysical and flame retardant properties are investigated at both macro and micro levels. The results show that the proposed composite PCMs with an APP/RP ratio of 23/10 exhibit the optimum flame retardant performance. Besides, the APP/RP-based composite PCMs for 18650 ternary battery module has also been researched comparing with air cooled and PCM with pure PA modes. The experimental results indicated that the fire retardant PCMs shown significant cooling and temperature balancing advantages for battery module, leading to a 44.7% and 30.1% reduction rate of the peak temperature and the maintenance of the maximum temperature difference within 1.36°C at a 3 C discharge rate for 25°C. Even at 45°C, the temperature uniformity can still be controlled within 5°C. Thus, this research indicates the composite PCM had good flame retardant and form stable properties, it would be utilized in BTMS, energy storage and other fields.
Original languageEnglish
Article number229116
Number of pages11
JournalJournal of Power Sources
Volume480
Early online date1 Nov 2020
DOIs
Publication statusPublished - 31 Dec 2020

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