多拓扑结构锂电池组外短路特性分析及模型评价

doi:10.3901/JME.2023.06.159

机械工程学报 ›› 2023, Vol. 59 ›› Issue (6): 159-172.doi: 10.3901/JME.2023.06.159

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多拓扑结构锂电池组外短路特性分析及模型评价

于全庆¹, 王灿¹, 李建明¹, 汤爱华², 赵立军¹

1. 哈尔滨工业大学(威海)汽车工程学院威海 264209;
2. 重庆理工大学车辆工程学院重庆 400054

收稿日期:2022-09-19 修回日期:2023-01-12 出版日期:2023-03-20 发布日期:2023-06-03
通讯作者: 赵立军(通信作者),男,1975年生,博士,副教授,主要研究方向为车辆的电动化及智能化。E-mail:zhaolijun@hitwh.edu.cn
作者简介:于全庆,男,1984年生,博士,副教授。主要研究方向为动力电池系统安全管理及车辆智能化技术。E-mail:qqyu@hit.edu.cn;王灿,男,2000年生,硕士研究生。主要研究方向为动力电池状态估计、故障诊断及热失控早期预警等。E-mail:22S030112@stu.hit.edu.cn;李建明,男,1999年生,硕士研究生。主要研究方向为动力电池故障诊断及热失控早期预警等。E-mail:21s030129@stu.hit.edu.cn;汤爱华,男,1980年生,博士,副教授。主要研究方向为动力电池系统安全技术。E-mail:aihuatang@cqut.edu.cn
基金资助:
国家自然科学基金面上(52177210、52277213)和山东省自然科学基金面上(ZR2020ME209)资助项目。

Model Evaluation and Analysis for Multi-topology Lithium Battery Pack External Short Circuit Characteristics

YU Quanqing¹, WANG Can¹, LI Jianming¹, TANG Aihua², ZHAO Lijun¹

1. School of Automotive Engineering, Harbin Institute of Technology, Weihai 264209;
2. School of Vehicle Engineering, Chongqing University of Technology, Chongqing 400054

Received:2022-09-19 Revised:2023-01-12 Online:2023-03-20 Published:2023-06-03

摘要/Abstract

摘要： 新能源汽车的快速发展受到动力电池系统安全的掣肘，锂电池组外部短路故障是导致电池热失控进而引发汽车起火爆炸的主要因素之一，而不同拓扑结构及初始荷电状态(State of charge, SOC)影响锂电池组外部短路特性。搭建锂电池组外部短路故障试验平台，进行多拓扑结构锂电池组在静置工况下的外部短路试验，模拟汽车停置时电池发生外部短路故障过程，揭示不同拓扑结构及不同初始SOC对锂电池组外部短路特性的影响，为锂离子电池单体分选成组、外部短路故障诊断等方面提供数据支撑。此外，锂离子电池外部短路模型重构是进行故障诊断的基础，对不同等效电路模型对锂离子电池外部短路电压预测精度等进行综合评价，为锂离子电池外部短路电特性重构模型选择提供指导。

关键词: 多拓扑结构锂电池组, 外部短路, 外短路模型评价

Abstract: The development of electric vehicles is hampered by the safety of power batteries. The external short circuit fault of lithium-ion battery pack is one of the main factors that lead to the thermal runaway of batteries and the fire and explosion of vehicles. Different topologies and initial SOC conditions of the lithium-ion battery pack affect the characteristics of external short circuit fault. This paper conducted the external short circuit test of Muti-topology lithium-ion battery pack, which is in the static condition, with designing the lithium-ion battery pack external short circuit fault test platform. The test reveals different topology and different initial SOC influence on lithium-ion battery pack external short circuit characteristics, with the simulation of vehicles in the rear external short circuit fault process. And it provides data support for the lithium-ion battery cell sorting into groups and external short-circuit faults detection. In addition, the reconstruction of external short circuit model of lithium-ion battery is the basis for fault detection. This paper comprehensively evaluates the prediction accuracy of external short circuit model by different equivalent circuit models, which provides guidance for the selection of external short circuit model of lithium-ion battery.

Key words: multi-topology lithium-ion battery pack, external short circuit, evaluation of external short circuit model

中图分类号:

TM912

于全庆, 王灿, 李建明, 汤爱华, 赵立军. 多拓扑结构锂电池组外短路特性分析及模型评价[J]. 机械工程学报, 2023, 59(6): 159-172.

YU Quanqing, WANG Can, LI Jianming, TANG Aihua, ZHAO Lijun. Model Evaluation and Analysis for Multi-topology Lithium Battery Pack External Short Circuit Characteristics[J]. Journal of Mechanical Engineering, 2023, 59(6): 159-172.

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多拓扑结构锂电池组外短路特性分析及模型评价

Model Evaluation and Analysis for Multi-topology Lithium Battery Pack External Short Circuit Characteristics

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