锂离子电池脉冲充电策略研究及表征分析

doi:10.12028/j.issn.2095-4239.2019.0139

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (6): 1182-1189.doi: 10.12028/j.issn.2095-4239.2019.0139

锂离子电池脉冲充电策略研究及表征分析

陈立铎¹, 吉登粤², 徐月¹, 张晋杰¹, 马天翼¹, 魏墨晗¹

1 中汽研汽车检验中心(天津)有限公司, 中国汽车技术研究中心有限公司, 天津市电动汽车评价技术企业重点实验室, 天津 300300;
2 宁德新能源科技有限公司研究院, 福建宁德 352100

收稿日期:2019-06-20 修回日期:2019-07-01 出版日期:2019-11-01 发布日期:2019-07-31
通讯作者: 陈立铎,工程师,主要从事新能源动力电池测评技术研究,E-mail:chenliduo@catarc.ac.cn。
作者简介:吉登粤(1995-),男,硕士研究生,工程师,主要从事绿色电池材料研究,E-mail:565343930@qq.com
基金资助:
国家重点研发计划项目（2018YFB0104104）。

Research and characterization of pulse charging strategy for lithium-ion traction battery

CHEN Liduo¹, JI Dengyue², XU Yue¹, ZHANG Jinjie¹, MA Tianyi¹, WEI Mohan¹

1 CATARC Automotive Test Center(Tianjin) Co., Ltd, China Automotive Technology and Research Center Co., Ltd, Tianjin Key Laboratory of Evaluation Technology for Electric Vehicles, Tianjin 300300, China;
2 Ningde Amperex Technology Ltd, Research Institute, Ningde 352100, Fujian, China

Received:2019-06-20 Revised:2019-07-01 Online:2019-11-01 Published:2019-07-31

摘要/Abstract

摘要： 动力电池充电策略对提高电动汽车性能和使用寿命起着至关重要的作用。针对一种三元材料体系18650圆柱形电池进行脉冲充电策略研究，将其与标准恒流恒压充电策略进行综合比对，全面客观地分析脉冲充电策略关键参数对动力电池电性能的影响，并系统地评估了脉冲充电策略对电池寿命的影响。在循环寿命研究方面，采用电化学交流阻抗欧谱（EIS）分析不同循环周数和SOC下的交流阻抗，采用X射线断层扫描（CT）无损分析技术对循环500周后电池结构进行表征分析，揭示了带负脉冲充电策略对电池循环性能和结构影响的关系。

关键词: 动力电池, 18650圆柱电池, 充电策略, 脉冲充电, 循环寿命

Abstract: Charging strategies of traction battery play a crucial role in improving the performance and life of electric vehicles. In this paper, the pulse charging strategy for a ternary material system 18650 cylindrical battery is studied, and it is compared with the standard constant current and constant voltage charging strategy. The impact of the key parameters of the pulse charging strategy on the electrical performance is comprehensively and objectively analyzed. The impact of the pulse charging strategy on battery life was systematically evaluated. In the aspect of cycle life research, electrochemical Impedance Spectroscopy (EIS) was used to analyze the AC impedance under different cycles and SOC, and the cell structure was characterized by X-ray tomography (CT) nondestructive analysis. The relationship between the pulse charging strategy and the cycle performance and structure of the battery is revealed.

Key words: traction battery, 18650 cylindrical battery, charging strategy, pulse charging, cycle life

中图分类号:

TM912

陈立铎, 吉登粤, 徐月, 张晋杰, 马天翼, 魏墨晗. 锂离子电池脉冲充电策略研究及表征分析[J]. 储能科学与技术, 2019, 8(6): 1182-1189.

CHEN Liduo, JI Dengyue, XU Yue, ZHANG Jinjie, MA Tianyi, WEI Mohan. Research and characterization of pulse charging strategy for lithium-ion traction battery[J]. Energy Storage Science and Technology, 2019, 8(6): 1182-1189.

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锂离子电池脉冲充电策略研究及表征分析

Research and characterization of pulse charging strategy for lithium-ion traction battery

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