北京航空航天大学学报 ›› 2022, Vol. 48 ›› Issue (5): 725-735.doi: 10.13700/j.bh.1001-5965.2020.0660

• 论文 • 上一篇    下一篇

基于正负极动力学特性的锂离子电池优化充电方法

张彩萍, 李峰, 张琳静, 王宇斌, 贾新羽, 张维戈   

  1. 北京交通大学 国家能源主动配电网技术研发中心, 北京 100044
  • 收稿日期:2020-11-26 发布日期:2022-05-30
  • 通讯作者: 张琳静 E-mail:lj.zhang@bjtu.edu.cn
  • 基金资助:
    国家自然科学基金(52007006,51977007,61633015)

Optimized charging method of lithium-ion batteries based on dynamic characteristics of electrodes

ZHANG Caiping, LI Feng, ZHANG Linjing, WANG Yubin, JIA Xinyu, ZHANG Weige   

  1. National Active Distribution Network Technongy Research Center, Beijing Jiaotong University, Beijing 100044, China
  • Received:2020-11-26 Published:2022-05-30
  • Supported by:
    National Natural Science Foundation of China (52007006,51977007,61633015)

摘要: 针对电动汽车快速充电存在的问题,分别对锂离子电池正、负极充放电特性进行研究,提出了优化充电方案。以负极析锂抑制为边界条件,获得正、负极在不同状态(SOC)下的最大允许充放电电流,建立了充电过程能耗和充电时间目标函数,以最大允许充电电流为约束条件,利用粒子群算法得到最优多阶段恒流充电电流序列。结果表明:与1 C恒流充电相比,电池充入相同容量时,优化充电时间减少约26.5%,34 min即可充电至80% SOC;与优化充电电流序列的平均电流恒流充电相比,优化充电能耗降低约1.5%。

关键词: 锂离子电池, 优化充电, 限制电极, 最大允许充电电流, 充电能耗, 充电时间

Abstract: Aiming at the problems existing in the fast charging of electric vehicles, the charging and discharging characteristics of lithium-ion batteries are well studied. And an optimized charging protocol are proposed. The maximum allowable charging current rates of positive and negative electrodes have been determined under different state of charge (SOC) with the boundary condition of none lithium-metal deposition in negative electrode. The charging energy consumption and charging time model is established for the full cell charging process. And the optimal charging current pattern is obtained for the full cell by employing the particle swarm optimization method and constraining the maximum allowable charging current of each electrode. The results demonstrate that the battery can be charged from 0% to 80% SOC within 34 minutes using the optimal charging current pattern, and the charging time can be reduced by about 26.5% when compared to that of 1 C constant-current charging. Meanwhile, the energy consumption of battery can be reduced by about 1.5% with the optimized charging current pattern, when compared to the constant-current charging pattern using its average value.

Key words: lithium-ion battery, optimized charging, limiting electrode, maximum allowable charging current, charging energy consumption, charging time

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发