Combined Cell-Level Estimation of State-of-Charge and Temperature in Battery Packs

Bjorn A. C. van de Ven, R. W. H. Sneijders, F. Hoekstra, H. Bergveld, M. Donkers
{"title":"Combined Cell-Level Estimation of State-of-Charge and Temperature in Battery Packs","authors":"Bjorn A. C. van de Ven, R. W. H. Sneijders, F. Hoekstra, H. Bergveld, M. Donkers","doi":"10.23919/ACC53348.2022.9867694","DOIUrl":null,"url":null,"abstract":"Accurately estimating the State-of-Charge (SoC) and temperature of lithium-ion cells inside a battery pack is critical for safe and reliable operation. This paper extends battery state estimation from single-cell SoC estimation towards a combined SoC and temperature estimation for a multi-cell pack. Combining the electrical and thermal models on a pack level allows for the inclusion of thermal interaction between the cells in a compact manner. The resulting coupled model is used in an extended Kalman filter with correlated noise and a forgetting factor, that is extended with model-residual-based tuning to accommodate differences in magnitude between the electrical and thermal parts of the coupled model. Combined estimation of temperature and SoC decreases the SoC error by around 50%, while the included thermal model adds an accurate estimate of the individual cell temperatures. This provides insight into the temperature distribution, without requiring a large number of temperature sensors.","PeriodicalId":366299,"journal":{"name":"2022 American Control Conference (ACC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 American Control Conference (ACC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/ACC53348.2022.9867694","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1

Abstract

Accurately estimating the State-of-Charge (SoC) and temperature of lithium-ion cells inside a battery pack is critical for safe and reliable operation. This paper extends battery state estimation from single-cell SoC estimation towards a combined SoC and temperature estimation for a multi-cell pack. Combining the electrical and thermal models on a pack level allows for the inclusion of thermal interaction between the cells in a compact manner. The resulting coupled model is used in an extended Kalman filter with correlated noise and a forgetting factor, that is extended with model-residual-based tuning to accommodate differences in magnitude between the electrical and thermal parts of the coupled model. Combined estimation of temperature and SoC decreases the SoC error by around 50%, while the included thermal model adds an accurate estimate of the individual cell temperatures. This provides insight into the temperature distribution, without requiring a large number of temperature sensors.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
电池组中充电状态和温度的组合电池级估计
准确估计电池组内锂离子电池的荷电状态(SoC)和温度对于安全可靠的运行至关重要。本文将电池状态估计从单电池SoC估计扩展到多电池组的SoC和温度估计。将电和热模型结合在一个包装水平上,可以以紧凑的方式包含电池之间的热相互作用。所得到的耦合模型用于具有相关噪声和遗忘因子的扩展卡尔曼滤波器,该滤波器通过基于模型残差的调谐进行扩展,以适应耦合模型的电和热部分之间的幅度差异。温度和SoC的综合估计减少了大约50%的SoC误差,而包含的热模型增加了对单个电池温度的准确估计。这提供了深入了解温度分布,而不需要大量的温度传感器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Optimal Connectivity during Multi-agent Consensus Dynamics via Model Predictive Control Gradient-Based Optimization for Anti-Windup PID Controls Power Management for Noise Aware Path Planning of Hybrid UAVs Fixed-Time Seeking and Tracking of Time-Varying Nash Equilibria in Noncooperative Games Aerial Interception of Non-Cooperative Intruder using Model Predictive Control
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1