Optimized perturbation technique for enhanced broadband impedance measurement in Lithium-ion batteries

Zandile C. Moyo, Fredrick M. Mwaniki
{"title":"Optimized perturbation technique for enhanced broadband impedance measurement in Lithium-ion batteries","authors":"Zandile C. Moyo,&nbsp;Fredrick M. Mwaniki","doi":"10.1016/j.prime.2025.100948","DOIUrl":null,"url":null,"abstract":"<div><div>Battery impedance provides critical insights into the internal state and health of a battery, making accurate frequency-domain measurement essential for characterization and diagnostics. This paper addresses key challenges in battery impedance measurements and evaluates two existing perturbation approaches for broadband impedance measurements in lithium-ion batteries using the same perturbation signal for comparative analysis. A novel approach is proposed that divides the frequency range into multiple bands, each independently perturbed using optimized excitation signals tailored to the band. Statistical averaging is implemented to further enhance measurement precision. By concentrating perturbation energy within specific frequency regions, the method improves the signal-to-noise ratio and reduces variance and bias in the impedance response. Experimental results demonstrate that this technique extends the measurable frequency range and improves accuracy compared to conventional methods, offering significant advancements in battery diagnostics.</div></div>","PeriodicalId":100488,"journal":{"name":"e-Prime - Advances in Electrical Engineering, Electronics and Energy","volume":"12 ","pages":"Article 100948"},"PeriodicalIF":0.0000,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"e-Prime - Advances in Electrical Engineering, Electronics and Energy","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772671125000555","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Battery impedance provides critical insights into the internal state and health of a battery, making accurate frequency-domain measurement essential for characterization and diagnostics. This paper addresses key challenges in battery impedance measurements and evaluates two existing perturbation approaches for broadband impedance measurements in lithium-ion batteries using the same perturbation signal for comparative analysis. A novel approach is proposed that divides the frequency range into multiple bands, each independently perturbed using optimized excitation signals tailored to the band. Statistical averaging is implemented to further enhance measurement precision. By concentrating perturbation energy within specific frequency regions, the method improves the signal-to-noise ratio and reduces variance and bias in the impedance response. Experimental results demonstrate that this technique extends the measurable frequency range and improves accuracy compared to conventional methods, offering significant advancements in battery diagnostics.
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
2.10
自引率
0.00%
发文量
0
×
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
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信