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 ›› 2023, Vol. 42 ›› Issue (1): 79-83.

• • 上一篇    下一篇

含添加剂细水雾抑制老化锂离子电池热失控研究

李丽霞,张 博,孙智灏,陈明毅
  

  1. (江苏大学 环境与安全工程学院,江苏 镇江 212013)
  • 出版日期:2023-01-15 发布日期:2023-01-15
  • 作者简介:李丽霞(1978- ),女,河北邯郸人,江苏大学环境与安全工程学院副教授,博士,硕士生导师,主要从事防火防爆技术研究及教学工作,江苏省镇江市京口区学府路301号,212013。
  • 基金资助:
    应急管理部消防救援局科技计划项目(2020XFCX33)

Study on the inhibition effect of additive water mist on the thermal runaway of aged lithium-ion batteries

Li Lixia,Zhang Bo, Sun Zhihao, Chen Mingyi
  

  1. (School of Environment and Safety Engineering, Jiangsu University, Jiangsu Zhenjiang 212013, China)
  • Online:2023-01-15 Published:2023-01-15

摘要:

以 18650 型锂离子电池为对象,对电池热失控和含添加剂细水雾对电池热失控抑制效果进行了研究。结果表明:电池循环次数越多,热失控触发时间越短;实验条件下电池热失控开始温度在 250 ℃左右,20 次循环电池热失控持续时间最长。不同压力细水雾对电池热失控均有明显抑制作用,其中 0.25 MPa 压力细水雾抑制效果最好。1.0%氯化钠、1.5%SDBS 和 0.5%蛋白质的加入对细水雾抑制电池火焰均有非常好的增效作用,能一定程度上提高细水雾对电池表面温度的抑制效果。

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Abstract:

Taking 18650 lithium- ion battery as the object, the batteries thermal runaway and inhibition effects of additive water mist on battery thermal runaway were studied. The results show that the more the battery cycles, the shorter the trigger time of thermal runaway; Under the experimental conditions, the starting temperature of battery thermal runaway is about 250 ℃, and the duration of battery thermal runaway is the longest after 20 cycles. Different pressure water mist has obvious inhibitory effect on battery thermal runaway, among which 0.25 MPa pressure water mist has the best inhibitory effect. The addition of 1.0% sodium chloride, 1.5% SDBS and 0.5% protein can not only enhance the inhibition of water mist on the flame of battery, but also improve the inhibition of water mist on the surface temperature of thermal runaway battery to a certain extent.

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