热滥用条件下18650锂离子电池热失控特性研究

Q4 Engineering

Journal of the Korean Society for Precision Engineering Pub Date : 2023-10-01 DOI:10.7736/jkspe.022.145

Jungmyung Kim, Heesung Park

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引用次数: 0

摘要

本研究旨在表征锂离子电池热失控现象的机理，锂离子电池是储能装置中的二次电池。分别以5%、40%和80%的荷电状态(SOC)加热18650电池，诱导热失控反应。我们将电池的热失控分为三个阶段，并讨论了区分每个阶段的物理测量。我们还提供了所有阶段特征废气的视觉比较和热图像。热失控的电荷状态与发热量成正比，在热失控的第三阶段，发生最高传质，40%的SOC释放气体13秒，80%的SOC释放气体和火焰3秒。此外，还提出了一种能够预测电池热失控现象的温度和电压测量方法。

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Thermal Runaway Characteristics Induced by Heat Abuse Conditions in 18650 Li-ion Batteries

This study aimed to characterize the mechanism of thermal runaway phenomenon in lithium-ion batteries, which represent secondary cells among energy storage devices. Thermal runaway reaction was induced by heating 18650 cells with 5%, 40%, and 80% state of charge (SOC). We divided the thermal runaway of the battery into three stages and discussed the physical measurements that distinguish each stage. We also provided a visual comparison and thermal image of the characterized exhaust gases in all stages. The state of charge and the amount of heat generated by thermal runaway were proportional, and in the third stage of thermal runaway, where the highest mass transfer occurred, 40% of SOC released gas for 13 seconds and 80% of SOC emitted gas and flame for 3 seconds. In addition, a temperature and voltage measurement method that can predict the thermal runaway phenomenon of a battery is presented.

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来源期刊

Journal of the Korean Society for Precision Engineering Engineering-Industrial and Manufacturing Engineering

CiteScore

0.50

自引率

0.00%

发文量

104

期刊介绍： Journal of the Korean Society for Precision Engineering (JKSPE) is devoted to publishing original research articles with high ethical standard on all aspects of precision engineering and manufacturing. Specifically, the journal focuses on articles related to improving the precision of machines and manufacturing processes through implementation of creative solutions that stem from advanced research using novel experimental methods, predictive modeling techniques, and rigorous analyses based on mechanical engineering or multidisciplinary approach. The expected outcomes of the knowledge disseminated from JKSPE are enhanced reliability, better motion precision, higher measurement accuracy, and sufficient reliability of precision systems. The various topics covered by JKSPE include: Precision Manufacturing processes, Precision Measurements, Robotics and Automation / Control, Smart Manufacturing System, Design and Materials, Machine Tools, Nano/Micro Technology, Biomechanical Engineering, Additive Manufacturing System, Green Manufacturing Technology.