A Multi-Particle Physics-Based Model of a Lithium-Ion Battery for Fast-Charging Control Application

被引：2

作者：

Li, Xiaoyu ^{[1
,2
]}

Hua, Wen ^{[1
]}

Tian, Jindong ^{[1
]}

Tian, Yong ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China

[2] Beijing Inst Technol, Sch Mech Engn, Natl Engn Lab Elect Vehicles, Beijing 100081, Peoples R China

来源：

WORLD ELECTRIC VEHICLE JOURNAL | 2021年 / 12卷 / 04期

基金：

中国国家自然科学基金;

关键词：

lithium-ion battery; physical model simplification; safe fast-charging; heterogeneous; pore wall flux;

D O I：

10.3390/wevj12040196

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The charging safety of electric vehicles is an area of focus in the electric automobile industry. For the purpose of ensuring safety, charging electric vehicles as soon as possible is a goal pursued by the public. In order to ensure the safety of electric vehicles during fast charging and to reduce the cycle life decay of the battery, a simplified multi-particle lithium-ion battery model is proposed, based on the pseudo two-dimensional (P2D) model. The model was developed by considering heterogeneous electrochemical reactions in the negative electrode area. The Butler-Volmer (BV) kinetic equation and the distribution of the pore wall flux in the negative electrode is approximated by the quasi-linear approximation method. Furthermore, this paper also analyzes the conditions of lithium precipitation from the negative electrode of a lithium-ion battery in the case of high charging rates, which has a certain reference significance for fast-charging control applications. The experimental and simulation results show that the model has a high simulation accuracy and can reflect the heterogeneity of electrochemical reactions in the negative electrode of the battery. The model can be adapted to fast-charging control applications.

引用

页数：12