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汽车安全与节能学报

汽车安全与节能学报 ›› 2014, Vol. 5 ›› Issue (02): 180-184.DOI: 10.3969/j.issn.1674-8484.2014.02.010

• 汽车节能与环保 • 上一篇    下一篇

磷酸铁锂动力电池常规循环过程中安全特性

王芳1，樊彬1 刘仕强1，张振鼎1，黄炘1，张文华2   

  1. 1. 中国汽车技术研究中心, 天津 300300，中国；
    2. 江西省电力科学研究院，南昌 330000，中国
  • 收稿日期:2014-03-03 出版日期:2014-06-25 发布日期:2014-06-27
  • 作者简介:王芳（1977—），女（汉），江苏，高级工程师。E-mail: fangwster@gmail.com / wangfang2011@catarc.ac.cn
  • 基金资助:

    国家“八六三”高技术项目(2011AA11A286)

Safety behaviors of LiFePO4 power battery during normal cycles

WANG Fang1, FAN Bin1, LIU Shiqiang1, Zhang Zhending1, HUANG Xin1, Zhang Wenhua2   

  1. 1．China Automotive Technology and Research Center, Tianjin 300300, China;
    2．Jiangxi Electric Power Research Institute, Nanchang 330000, China
  • Received:2014-03-03 Online:2014-06-25 Published:2014-06-27

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摘要： 动力电池的安全性一直是电动汽车行业关注的焦点。本文对某款磷酸铁锂动力电池，进行了
针刺、挤压、热箱等安全滥用测试，以研究该款电池在不同循环时期的安全性变化规律。分析了该电
池在经历100~500 次循环周期测试后的热稳定性参数和电池循环寿命的关系。结果表明：以自生热
放热起始点为参照，循环前的电池并不具有最高的热活性；随着循环次数的增加，该款电池的热活性
先增强后减弱。这一现象可归结为：电池循环过程中，电池内部活性物质逐渐活化，逐渐发挥到最佳
性能，之后活性又逐渐降低。

关键词: 电动汽车, 动力电池, 安全性, 常规循环, 热特性

Abstract: The safety of lithium-ion traction batteries is a key point during the development of electric vehicles.
Some safety abuse tests, such as the penetration test, the crush test and the heat test, were done to investigate
the safety characteristic change in different cycles for a lithium iron phosphate power battery. The relationship
between the thermal abuse behavior parameters and the battery cycle life was analyzed before and after
100~500 cycles. The results show that according to the starting point of self-heating, fresh batteries have not
the highest thermal activities; battery thermal activities firstly increase, then decrease along with the cycle time
increasing . This phenomenon can be attributed to that the active materials in battery activate gradually to
achieve the best performance, afterwards decrease with increasing cycles.

Key words: electrical vehicles, power batteries, safety, normal cycle, thermal behavior

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