锂离子电池中的电弧

IF 4.6 4区 化学 Q2 ELECTROCHEMISTRY
Batteries Pub Date : 2023-10-31 DOI:10.3390/batteries9110540
Theo Ledinski, Andrey W. Golubkov, Oskar Schweighofer, Simon Erker
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引用次数: 1

摘要

随着电动汽车的日益普及,锂离子电池和汽车电池系统也在不断改进。电池的能量密度越高,发生故障的风险也就越大。在最坏的情况下,会发生被称为热失控的快速放热反应。在热失控过程中,电池可以释放出大约66%的气体和粒子。设计了一个实验装置,并证明了电池热失控时的气-颗粒出口会引起电突破。这些突破可能会在电池系统中产生电弧,这可能会导致额外的损害,如烧毁外壳或点燃排气口,使损害更加严重,难以控制。必须防止不可控的电池火灾。分析了产生的气体和喷出的粒子,探讨了产生突破的可能原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Arcing in Li-Ion Batteries
Lithium-Ion battery cells and automotive battery systems are constantly improving as a result of the rising popularity of electric vehicles. With higher energy densities of the cells, the risks in case of failure rise as well. In the worst case, a fast exothermic reaction known as thermal runaway can occur. During thermal runaway, the cell can emit around 66% of its mass as gas and particles. An experimental setup was designed and showed that the gas-particle-vent of a cell going through thermal runaway can cause electric breakthroughs. These breakthroughs could start electric arcing in the battery system, which could lead to additional damages such as burning through the casing or igniting the vent gas, making the damage more severe and difficult to control. Uncontrollable battery fires must be prevented. The emitted gas was analyzed and the ejected particles were examined to discuss the potential causes of the breakthroughs.
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来源期刊
Batteries
Batteries Energy-Energy Engineering and Power Technology
CiteScore
4.00
自引率
15.00%
发文量
217
审稿时长
7 weeks
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