磷酸铁锂电池大倍率充放电模型仿真研究

doi:10.16628/j.cnki.2095-8188.2020.05.009

电器与能效管理技术 ›› 2020, Vol. 590 ›› Issue (5): 57-61.doi: 10.16628/j.cnki.2095-8188.2020.05.009

磷酸铁锂电池大倍率充放电模型仿真研究

刘倩倩¹, 赵言本², 吕超²

1.海军工程大学电子工程学院, 湖北武汉 430033;
2.哈尔滨工业大学电气工程及自动化学院, 黑龙江哈尔滨 150001

收稿日期:2020-01-14 出版日期:2020-05-30 发布日期:2020-05-29
作者简介:刘倩倩(1984—),女,讲师,研究方向为装备故障预测与健康管理。赵言本(1994—),男,硕士研究生,研究方向为锂电子电池建模仿真与状态估计。吕超(1978—),男,副教授,研究方向为动力/储能电池管理新理论与新技术。

Research on Model Simulation for High Current-Rate Charge/Discharge of LiFePO₄ Lithium-ion Batteries

LIU Qianqian¹, ZHAO Yanben², LÜ Chao²

1. School of Electronic Engineering,Naval University of Engineering, Wuhan 430033, China;
2. School of Electrical Engineering and Automation,Harbin Institute of Technology, Harbin 150001, China

Received:2020-01-14 Online:2020-05-30 Published:2020-05-29

摘要/Abstract

摘要： 针对现有磷酸铁锂电池模型在模拟电池大倍率充放电特性时精度较低的问题,基于一种简化电化学模型,对其关键的电化学反应系数进行了关于电流倍率的修正。修正后的模型校正了由于内部反应加剧导致的端电压平台位置的偏移,实现了大倍率充放电时端电压的准确仿真,并在45 Ah圆柱型磷酸铁锂电池上进行了实验验证。

关键词: 锂离子电池, 大倍率, 参数修正, 电化学模型

Abstract: To solve the problem that the existing models of LiFePO₄ lithium-ion batteries have low accuracy when simulating the high current rate charge/discharge properties,this paper revised the key electrochemical reaction coefficient of a simplified electrochemical model according to the current rate.The revised model corrects the terminal voltage platform deviations caused by the intensified internal electrochemical reaction,and realized accurate simulation of the terminal voltage during high current rate charge/discharge.Moreover,the revised model is experimentally verified on a 45 Ah cylindrical LiFePO₄ lithium-ion battery.

Key words: lithium-ion battery, high current-rate, parameter modification, electrochemical model

中图分类号:

TM910

刘倩倩, 赵言本, 吕超. 磷酸铁锂电池大倍率充放电模型仿真研究[J]. 电器与能效管理技术, 2020, 590(5): 57-61.

LIU Qianqian, ZHAO Yanben, LÜ Chao. Research on Model Simulation for High Current-Rate Charge/Discharge of LiFePO₄ Lithium-ion Batteries[J]. DIANQI YU NENGXIAO GUANLI JISHU, 2020, 590(5): 57-61.

磷酸铁锂电池大倍率充放电模型仿真研究

Research on Model Simulation for High Current-Rate Charge/Discharge of LiFePO₄ Lithium-ion Batteries

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磷酸铁锂电池大倍率充放电模型仿真研究

Research on Model Simulation for High Current-Rate Charge/Discharge of LiFePO4 Lithium-ion Batteries

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Research on Model Simulation for High Current-Rate Charge/Discharge of LiFePO₄ Lithium-ion Batteries