{"title":"Dependence of OCV, Hysteresis, Overvoltage on Temperature and SOC in Commercial LiFePO4 Lithium-Ion Battery","authors":"Yupeng Chen, Kunihiko Mitsubori","doi":"10.1049/ell2.70403","DOIUrl":null,"url":null,"abstract":"<p>We present the experimental results of the dependences of the open-circuit voltage (OCV), its hysteresis and the overvoltage in commercial LiFePO<sub>4</sub> lithium-ion-batteries (LFP-LIB). Our results show that the OCV has minor dependence on temperature but depends on state-of-charge (SOC), while the hysteresis and overvoltage depend on both temperature and SOC. The dependence of hysteresis on SOC is nonlinear, and it has a bimodal characteristic at low temperature while unimodal at high temperature. These results suggest that if we employ modelling which takes into account the effects of temperature and SOC on hysteresis voltage, we can construct control systems of the LIB with higher accuracy than is currently possible.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70403","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronics Letters","FirstCategoryId":"5","ListUrlMain":"https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/ell2.70403","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
We present the experimental results of the dependences of the open-circuit voltage (OCV), its hysteresis and the overvoltage in commercial LiFePO4 lithium-ion-batteries (LFP-LIB). Our results show that the OCV has minor dependence on temperature but depends on state-of-charge (SOC), while the hysteresis and overvoltage depend on both temperature and SOC. The dependence of hysteresis on SOC is nonlinear, and it has a bimodal characteristic at low temperature while unimodal at high temperature. These results suggest that if we employ modelling which takes into account the effects of temperature and SOC on hysteresis voltage, we can construct control systems of the LIB with higher accuracy than is currently possible.
期刊介绍：
Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews.
Scope
As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below.
Antennas and Propagation
Biomedical and Bioinspired Technologies, Signal Processing and Applications
Control Engineering
Electromagnetism: Theory, Materials and Devices
Electronic Circuits and Systems
Image, Video and Vision Processing and Applications
Information, Computing and Communications
Instrumentation and Measurement
Microwave Technology
Optical Communications
Photonics and Opto-Electronics
Power Electronics, Energy and Sustainability
Radar, Sonar and Navigation
Semiconductor Technology
Signal Processing
MIMO
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