期刊
ETRANSPORTATION
卷 12, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.etran.2022.100157
关键词
Lithium-ion battery; Thermal runaway; Cell venting; Jet fire; Numerical simulation
资金
- National Natural Science Foundation of China [52174225and, 51604297]
- European Union [896195]
- University of Warwick
- Marie Curie Actions (MSCA) [896195] Funding Source: Marie Curie Actions (MSCA)
Thermal runaway is a safety concern for lithium-ion batteries. This study develops a numerical model to predict the temperature, pressure evolution, and jet fire of the battery, considering the effect of state of charge (SOC).
Thermal runaway (TR) is a major safety concern for lithium-ion batteries. A TR model incorporating the resulting jet fire can aid the design optimization of battery modules. A numerical model has been developed by coupling conjugate heat transfer with computational fluid dynamics (CFD) to capture the cell temperature and internal pressure evolution under thermal abuse, venting and subsequent combustion of 18650 lithium-ion batteries. The lumped model was employed to predict the thermal abuse reactions and jet dynamics, while the vented gas flow and combustion were solved numerically. Model validation has been conducted with newly conducted experimental measurements for the transient flame height of jet fire and temperatures at selected monitoring points on the cell surface and above the cell. The validated model was then used to investigate the effect of the SOCs on the evolution of TR and subsequent jet fires. Increasing SOCs shortens the onset time of TR and enlarges the peak jet velocity. The peak heat release rates and flame height of the jet fire increase with the increase of SOC. The developed modeling approach extends the TR model to jet fire and it can potentially be applied to assist the design of battery modules. (c) 2022 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