Experimental Analysis of Thermal Runaway and Propagation in Lithium-Ion Battery Modules
Experimental Analysis of Thermal Runaway and Propagation in Lithium-Ion Battery Modules
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DOI：
10.1149/2.0921509jes
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发表时间：
2015-01-01
影响因子：
3.9
通讯作者：
Mukherjee, Partha P.
中科院分区：
文献类型：
--
作者：
Lopez, Carlos F.;Jeevarajan, Judith A.;Mukherjee, Partha P.
虽然锂离子电池（LIB）的能量和功率密度正在稳步提高，但热安全仍然是一个关键挑战。在滥用条件下，放热反应可能导致热量释放，从而引发随后的不安全反应。这种情况在模块配置中很常见，因为从被滥用的电池释放的热量可以激活相邻电池中的一系列反应，导致灾难性的热失控。这项工作的重点是实验说明和分析不同的锂离子电池模块配置，以表征热行为，并确定安全的做法。滥用测试包括热排气设置，其中模块中的单个电池通过加热元件触发热失控。细胞到细胞的热失控传播行为进行了表征。结果表明，在含有圆柱形电池的模块中，增加电池间的间距显著降低了热失控传播的概率。此外，它被确定为适当的翼片配置与电池形状因子相结合，表现出对热失控传播的主要影响。已经分析了不同的隔热材料以确定它们改善和/或潜在地减轻传播效应的能力。(C)作者（S）2015由ECS发布。All rights reserved.
While the energy and power density of lithium-ion batteries (LIBs) are steadily improving, thermal safety continues to remain a critical challenge. Under abuse conditions, exothermic reactions may lead to the release of heat that can trigger subsequent unsafe reactions. The situation worsens in a module configuration, as the released heat from an abused cell can activate a chain of reactions in the neighboring cells, causing catastrophic thermal runaway. This work focuses on experimental elucidation and analysis of different LIB module configurations to characterize the thermal behavior and determine safe practices. The abuse test consists of a heat-to-vent setting where a single cell in a module is triggered into thermal runaway via a heating element. The cell-to-cell thermal runaway propagation behavior has been characterized. Results have shown that increasing the inter-cell spacing in a module containing cylindrical cells significantly decreases the probability of thermal runaway propagation. Additionally, it was determined that appropriate tab configuration combined with cell form factors exhibit a major influence on thermal runaway propagation. Different thermal insulation materials have been analyzed to determine their ability to ameliorate and/or potentially mitigate propagation effects. (C) The Author(s) 2015. Published by ECS. All rights reserved.