储能科学与技术 ›› 2022, Vol. 11 ›› Issue (5): 1537-1542.doi: 10.19799/j.cnki.2095-4239.2021.0493

• 储能系统与工程 • 上一篇    下一篇

锂离子电池系统低温充电策略

王苏杭1(), 李建林2(), 李雅欣2, 熊俊杰3, 曾伟3   

  1. 1.东华大学信息科学与技术学院,上海 201620
    2.储能技术工程研究中心(北方工业大学),北京 100144
    3.国网江西省电力有限公司电力科学研究院,江西 南昌 330000
  • 收稿日期:2021-09-19 修回日期:2021-09-29 出版日期:2022-05-05 发布日期:2022-05-07
  • 通讯作者: 李建林 E-mail:1158822549@qq.com;dkyljl@163.com
  • 作者简介:王苏杭(1997—),男,硕士研究生,研究方向为动力电池、储能技术,E-mail:1158822549@qq.com
  • 基金资助:
    北京市教育委员会科技计划重点项目(21J026)

Research on charging strategy of lithium-ion battery system at low temperature

Suhang WANG1(), Jianlin LI2(), Yaxin LI2, Junjie XIONG3, Wei ZENG3   

  1. 1.College of Information Science and Technology, Donghua University, Shanghai 201620, China
    2.Energy Storage Technology Engineering Research Center (North China University of Technology), Beijing 100144, China
    3.Electric Power Research Institute of State Grid Jiangxi Electric Power Co. , Ltd. , Nanchang 330000, Jiangxi, China
  • Received:2021-09-19 Revised:2021-09-29 Online:2022-05-05 Published:2022-05-07
  • Contact: Jianlin LI E-mail:1158822549@qq.com;dkyljl@163.com

摘要:

新能源汽车行业正迅猛发展,电动汽车的销量也屡创新高,而电动汽车在冬季低温下如何高效且经济地进行充电,仍是一个亟待解决的问题。基于充电时电池自身内阻产热的原理,提出了一种锂电池系统低温充电的策略,并在此基础上进行了改进。以最小单体电池温度为判断条件,使用多阶段恒流充电技术可以有效缩短充电时间,并保证一定的充电容量。通过研究和实验表明,该策略具有良好的充电效果,且可以根据实际需求来制定具体的充电方案,可有效解决锂离子电池系统在冬季低温下的充电问题。

关键词: 锂电池, 动力电池, 低温充电, 恒流充电, 电池加热

Abstract:

The new energy vehicle industry is developing rapidly, and the sales of electric vehicles have repeatedly hit new highs. How to charge electric vehicles efficiently and economically at low temperatures in winter is still an urgent problem to be solved. A charging strategy at a low temperature for lithium battery systems is proposed and improved based on the principle that the battery generates heat by itself during charging. Taking the minimum single battery temperature as the judgment condition, the use of multi-stage constant current charging technology can effectively shorten the charging time and ensure sufficient charging capacity. Research and experiments show that this strategy has a good charging effect, and specific charging schemes can be formulated according to actual needs, which can effectively solve the charging problem of lithium-ion battery systems at low temperatures in winter.

Key words: lithium battery, power battery, charging at low temperature, constant current charging, battery heating

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