Analysis of thermal runaway behaviors of lithium batteries for electric bicycles induced by overcharging

YUAN Wei; LIANG Dong; CHU Yanyan; LIU Yirong

doi:10.13471/j.cnki.acta.snus.2022B004

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Analysis of thermal runaway behaviors of lithium batteries for electric bicycles induced by overcharging

Research articles | 更新时间：2023-11-01

- Analysis of thermal runaway behaviors of lithium batteries for electric bicycles induced by overcharging
- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 61, Issue 6, Pages: 136-143(2022)
- 作者机构：
  
  1.中山大学材料科学与工程学院，广东广州 510006
  2.广东省消防科学与智能应急技术重点实验室，广东广州 510006
  3.中山大学智能工程学院，广东广州 510006
  4.中国信息通信研究院，北京 100191
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2022B004
  CLC： TM912.9
- Published：25 November 2022，
  
  Published Online：19 April 2022，
  
  Received：11 January 2022，
  
  Accepted：10 March 2022
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袁威,梁栋,褚燕燕等.过充电诱发电动车用锂电池热失控行为分析[J].中山大学学报(自然科学版),2022,61(06):136-143.

YUAN Wei,LIANG Dong,CHU Yanyan,et al.Analysis of thermal runaway behaviors of lithium batteries for electric bicycles induced by overcharging[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(06):136-143.
袁威,梁栋,褚燕燕等.过充电诱发电动车用锂电池热失控行为分析[J].中山大学学报(自然科学版),2022,61(06):136-143. DOI： 10.13471/j.cnki.acta.snus.2022B004.

YUAN Wei,LIANG Dong,CHU Yanyan,et al.Analysis of thermal runaway behaviors of lithium batteries for electric bicycles induced by overcharging[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(06):136-143. DOI： 10.13471/j.cnki.acta.snus.2022B004.

摘要

以电动车用锰酸锂电池（LiMn

）为研究对象，采用理论分析与试验相结合的方式，探究不同过充电倍率下锰酸锂电池的热失控行为特征。结果表明：高倍率过充条件下，电池更快达到热失控状态。3C倍率过充条件下，电池达到热失控的平均时间比1.5C倍率缩短233.4%。过充电倍率对电池的影响主要体现在缓慢温升和快速温升两个阶段，控制措施应当在这两个阶段介入。

Abstract

Lithium manganate batteries （LiMn

） for electric bicycles were used as the research object. The thermal runaway behavior of LiMn

battery under different overcharge rates was investigated by combining theoretical analysis and experiments. The results showed that the battery reached thermal runaway faster under high overcharge rate， and the average time to reach thermal runaway under 3C overcharge rate was 233.4% shorter than that under 1.5C overcharge rate. The effect of overcharge multiplier on the battery was mainly reflected in the two stages of slow temperature rise and fast temperature rise， and the control measures should intervene in these two stages.

关键词

电动车锰酸锂电池热失控过充电

Keywords

electric bicycleslithium manganate batterythermal runawayovercharge

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