主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (8): 1153-1155.

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热处理对锂离子电池热失控特性的影响研究

孙健，贺元骅，谢松   

  1. 中国民用航空飞行学院，四川广汉618307
  • 出版日期:2020-08-15 发布日期:2020-08-15
  • 通讯作者: 谢松（1986-），男，中国民用航空飞行学院民航安全工程学院副研究员，博士。
  • 作者简介:孙健（1995-），男，山东临沂人，中国民用航空飞行学院民航安全工程学院硕士研究生，主要从事锂电池热安全、民用航空安全研究四川省广汉市南昌路四段46 号，618307。
  • 基金资助:
    国家重点研发计划项目(2018YFC0809500)；中国民用航空飞行学院研究生创新创业训练计划项目(X2020-22)

Research on the effect of heat treatment on thermal runaway characteristics of lithium-ion batteries

SUN Jian, HE Yuan-hua, XIE Song   

  1. Civil Aviation Flight University of China, Sichuan Guanghan 618307, China
  • Online:2020-08-15 Published:2020-08-15

摘要： 为了探究外部高温对不同荷电状态锂离子电池热失控特性的影响，将三种荷电状态的18650 型锂离子电池分别热处理至80、100 ℃，在常温下静置24 h 后通过热流道加热线圈使其热失控并分析电池的温度、电压等特征参数。研究表明，同一热处理温度下，锂离子电池荷电状态越高其热失控现象越剧烈，热失控温度越高，电压下降时间越早。同一荷电状态下，热处理至80 ℃的锂离子电池热失控现象更剧烈，热失控温度更高，电压下降时间却更晚。试验结论可为锂离子电池的安全运输、存储及应用提供理论依据。

关键词: 锂离子电池, 热失控, 荷电状态, 热处理

Abstract: In order to explore the effect of external high temperature on the thermal runaway characteristics of lithium-ion batteries with different charged states,18650 lithium- ion batteries with three charged states were heated to 80 ℃ and 100 ℃ respectively. After standing at room temperature for 24 hours, the thermal runaway was made by hot runner heating coil, and the characteristic parameters such as temperature and voltage were analyzed. The results show that at the same heat treatment temperature, the higher the charge state of lithium- ion battery, the more severe the thermal runaway phenomenon, the higher the thermal runaway temperature, the earlier the voltage drop time. In the same charged state, the thermal runaway phenomenon of lithium- ion battery heat- treated to 80 ℃ is more severe, the thermal runaway temperature is higher, but the voltage drop time is later. The experimental results can provide a theoretical basis for the safe transportation, storage and application of lithium-ion batteries.

Key words: lithium- ion battery, thermal runaway, charge state;heat treatment