期刊
ETRANSPORTATION
卷 11, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.etran.2021.100142
关键词
Lithium ion battery safety; Thermal runaway; C6F12O; Intermittent spray cooling; Fire suppression
资金
- National Natural Science Foundation of China [U2033204]
- University Synergy Innovation Program of Anhui Province [GXXT-2020-079]
- Fundamental Research Funds for the Central Universities [WK2320000051]
- Youth Innovation Promotion Association CAS
A novel cooling method combining C6F12O agent with ISC is proposed to suppress LFP battery fires, which effectively reduces toxic gas production and HRR. ISC extends low temperature duration and decreases the temperature rise rate compared to CSC, with the optimum DC suggested for fire suppression.
Nowadays, fires caused by thermal runaway (TR) of lithium ion battery (LIB) remains a potential risk in its application. An effective method is urgently required to suppress LIB fires. In this work, a novel cooling method combining dodecafluoro-2-methylpentan-3-one (C6F12O) agent with intermittent spray cooling (ISC) is proposed for suppression of lithium iron phosphate (LFP) battery fires. Besides, the influence of spray frequency and duty cycle (DC) on spray cooling efficiency are discussed. The results indicate that atomized C6F12O can effectively suppress LFP fires, reduce the production of toxic gases and heat release rate (HRR). However, after C6F12O runs out, the rapidly elevated temperature and the release of combustible gases mean that the TR battery requires longer and more efficient cooling. Compared with continuous spray cooling (CSC), ISC not only extends low temperature duration but also decreases the temperature rise rate of the battery. As DC increasing, C6F12O agent first exhibits an enhancement effect and then an inhibition effect on cooling performance. It is suggested that the optimum DC is 55.4% for the suppression of 14 Ah LFP fires. For the LIBs with higher capacity and higher fraction of active materials, the optimum DC is required to be higher. (C) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据