Failure propagation in multi-cell lithium ion batteries
Failure propagation in multi-cell lithium ion batteries
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DOI：
10.1016/j.jpowsour.2014.10.081
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发表时间：
2015-06-01
影响因子：
9.2
通讯作者：
Spangler, Scott W.
中科院分区：
文献类型：
--
作者：
Lamb, Joshua;Orendorff, Christopher J.;Spangler, Scott W.
传统上，锂离子电池的安全性和故障影响问题都是针对单个电池的现场故障。然而，大型和复杂的电池系统需要考虑单个电池故障将如何影响整个系统。初始故障导致系统内其他细胞的热失控，造成的情况比单个细胞的故障严重得多。本工作考察了在单个电池中引起热失控后圆柱形和堆叠袋状电池的小模块的行为。由于相邻细胞之间的接触有限，圆柱形细胞不易传播。电气连接被发现是有影响的，因为10S1P圆柱形电池模块没有显示故障通过模块传播，而1S10P模块在启动故障触发后的几分钟内有一个能量热失控消耗模块。相反，使用袋状电池构建的模块显示了电池之间强热传递的影响。在这种情况下，电池的大表面积与相邻的电池直接接触，使得所有配置（并联或串联）测试的故障在60-80秒内传播到整个电池。(C) 2014 Elsevier B.V.版权所有
Traditionally, safety and impact of failure concerns of lithium ion batteries have dealt with the field failure of single cells. However, large and complex battery systems require the consideration of how a single cell failure will impact the system as a whole. Initial failure that leads to the thermal runaway of other cells within the system creates a much more serious condition than the failure of a single cell. This work examines the behavior of small modules of cylindrical and stacked pouch cells after thermal runaway is induced in a single cell. Cylindrical cells are observed to be less prone to propagate owing to the limited contact between neighboring cells. The electrical connectivity is found to be impactful as the 10S1P cylindrical cell module did not show failure propagation through the module, while the 1S10P module had an energetic thermal runaway consuming the module minutes after the initiation failure trigger. Modules built using pouch cells conversely showed the impact of strong heat transfer between cells. In this case, a large surface area of the cells was in direct contact with its neighbors, allowing failure to propagate through the entire battery within 60-80 s for all configurations (parallel or series) tested. (C) 2014 Elsevier B.V. All rights reserved.