湿热环境下NCM三元锂离子电池热失控分析

doi:10.12068/j.issn.1005-3026.2020.06.021

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (6): 881-887.DOI: 10.12068/j.issn.1005-3026.2020.06.021

湿热环境下NCM三元锂离子电池热失控分析

张培红，袁威，魏钟原，李子建

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2019-09-23 修回日期:2019-09-23 出版日期:2020-06-15 发布日期:2020-06-12
通讯作者: 张培红
作者简介:张培红(1969-)，女，河南南阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51774067).

Thermal Runaway Analysis of NCM Lithium-Ion Battery in Humid and Hot Environment

ZHANG Pei-hong， YUAN Wei， WEI Zhong-yuan， LI Zi-jian

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2019-09-23 Revised:2019-09-23 Online:2020-06-15 Published:2020-06-12
Contact: ZHANG Pei-hong
About author:-
Supported by:
-

摘要/Abstract

摘要： 从高温热滥用角度出发，对高湿高温环境中三元锂离子电池的热失控行为进行实验和模拟的对比分析.选择荷电量(SOC)为50%的镍钴锰三元锂离子动力电池(NCM523)作为研究对象，利用恒定功率1kW 的电热炉作为外加热源，加热660s后撤掉外热源，进行湿热环境下NCM三元锂离子电池热滥用实验，并利用COMSOL多物理场仿真软件进行数值模拟.结果表明:常湿条件下，环境初始温度的提高，造成热失控发生的时刻显著提前.对于SOC为50%的NCM三元锂离子电池，在相对湿度为50%的条件下，当环境初始温度由20℃增加到40℃时，电池达到热失控的时间提前了20.2%；在室温为30℃条件下，当环境湿度由50%增加到100%时，热失控导致的最高温度增加了37.2%.高温高湿环境将造成NCM三元锂离子电池热失控的危险性显著增加.

关键词: 镍钴锰三元锂离子电池, COMSOL 多物理场, 热滥用, 热失控, 相对湿度

Abstract: From the perspective of heat abuse， the thermal runaway behavior of the NCM ternary lithium-ion battery in hot and high humid environment were analyzed based on tests and simulations. The NCM523 nickel-cobalt-manganese lithium-ion power battery with 50% SOC was selected as the object of study. An electric furnace with a constant power of 1kW was used as an external heat source， after 660s of heating， the external heat source was removed， and the heat abuse experiment of NCM ternary lithium-ion battery in humid and hot environment was carried out. The simulation was conducted by COMSOL Multiphysics software. The results show that for NCM lithium-ion battery with normal relative humidity， the increase of the initial surrounding temperature can lead to an earlier occurrence of the thermal runaway. Under 50% relative humidity， when the ambient temperature increases from 20℃ to 40℃， the time for the battery to reach thermal runaway is shortened by 20.2%. At 30℃， when the ambient humidity increases from 50% to 100%， the peak temperature in the process of thermal runaway is increased by 37.2%. The hot and high relative humidity has a significant enhancement effect on the risk of the thermal runaway of the NCM lithium-ion battery.

Key words: nickel-cobalt-manganese(NCM)lithium-ion battery, COMSOL Multiphysics, heat abuse, thermal runaway； relative humidity

中图分类号:

TM912.9

张培红，袁威，魏钟原，李子建. 湿热环境下NCM三元锂离子电池热失控分析[J]. 东北大学学报:自然科学版, 2020, 41(6): 881-887.

ZHANG Pei-hong， YUAN Wei， WEI Zhong-yuan， LI Zi-jian. Thermal Runaway Analysis of NCM Lithium-Ion Battery in Humid and Hot Environment[J]. Journal of Northeastern University Natural Science, 2020, 41(6): 881-887.

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湿热环境下NCM三元锂离子电池热失控分析

Thermal Runaway Analysis of NCM Lithium-Ion Battery in Humid and Hot Environment

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