Simulation and experimental study on lithium ion battery short circuit
Simulation and experimental study on lithium ion battery short circuit
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DOI：
10.1016/j.apenergy.2016.04.016
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发表时间：
2016-07-01
期刊：
影响因子：
11.2
通讯作者：
Gu, Junjie
中科院分区：
文献类型：
--
作者：
Zhao, Rui;Liu, Jie;Gu, Junjie
安全性是锂离子（Li-ion）电池应用中的第一要务。锂离子电池引起的大部分电气和热危害与短路有关。本文进行了外部和内部短路试验。使用不同容量的锂离子电池和电池组。结果表明，外部短路是更严重的小尺寸电池，由于其较高的内阻，这种类型的短路可以很好地管理通过组装保险丝。在内部短路测试中，较大容量的电池出现故障的几率较高。提出了一种改进的电化学-热模型，该模型引入了来自指甲部位的额外热源，并被证明能够成功地描述电池中的温度变化。具体而言，该模型能够估计热失控的发生和近似开始时间。此外，基于水凝胶的热管理系统在抑制热滥用和防止热失控传播方面的有效性通过对电池和电池组的外部和内部短路测试来验证。(C)2016爱思唯尔有限公司版权所有。
Safety is the first priority in lithium ion (Li-ion) battery applications. A large portion of electrical and thermal hazards caused by Li-ion battery is associated with short circuit. In this paper, both external and internal short circuit tests are conducted. Li-ion batteries and battery packs of different capacities are used. The results indicate that external short circuit is worse for smaller size batteries due to their higher internal resistances, and this type of short can be well managed by assembling fuses. In internal short circuit tests, higher chance of failure is found on larger capacity batteries. A modified electrochemical-thermal model is proposed, which incorporates an additional heat source from nail site and proves to be successful in depicting temperature changes in batteries. Specifically, the model is able to estimate the occurrence and approximate start time of thermal runaway. Furthermore, the effectiveness of a hydrogel based thermal management system in suppressing thermal abuse and preventing thermal runaway propagation is verified through the external and internal short tests on batteries and battery packs. (C) 2016 Elsevier Ltd. All rights reserved.