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Coulomb Counting Method based SOC Estimation of Lithium-Ion Batteries Considering Battery Temperature and Aging
1
School of Control Science and Engineering, Shandong University, Jinan 250061, China
2
School of Energy and Control Engineering, Changji University, Changji 831100, China
3
School of Information Science and Electrical Engineering, Shandong Jiaotong University, Jinan 250023, China
Corresponding Author:
Qi Zhang,
[email protected]
Volume 1, Issue 1
2025
Received: 23 April 2025
Accepted: 18 June 2025
Published: 28 July 2025
Article Information
Published in
ICCK Transactions on Electric and Hybrid Vehicles
Volume/Issue
Volume 1, Issue 1, 2025
Pages
4-11
Abstract
The Coulomb counting method is simple and effective in terms of state of charge (SOC) estimation of lithium-ion batteries. However, if the current measurement is not accurate, it will cause a cumulative calculation error, which will gradually increase with the time. And if the ambient temperature changes, the available capacity and initial SOC of the battery will also change. In order to solve the shortcomings of the traditional Coulomb counting method of SOC estimation, an improved method was proposed in this paper by taking into account the influence of battery temperature and aging on SOC. It can correct the initial value of SOC and the maximum available capacity of the battery more accurately, thus it solves the cumulative error problem, and improves the SOC estimation accuracy. A simple, accurate, and easy-to-implement method of battery SOC estimation is provided for the battery management system, which has practical application value.
Graphical Abstract
Keywords
SOC estimation
coulomb counting method
electric vehicles
battery management system
Data Availability Statement
Data will be made available on request.
Funding
This work was supported by National Natural Science Foundation of China under Grant 62203271; and Natural Science Foundation of Xinjiang Uygur Autonomous Region under Grant 2022D01C462, which are gratefully acknowledged.
Conflicts of Interest
The authors declare no conflicts of interest.
Ethical Approval and Consent to Participate
Not applicable.
References
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APA Style
Zhang, Q., Fu, X., & Pei, W. (2025). Coulomb Counting Method based SOC Estimation of Lithium-Ion Batteries Considering Battery Temperature and Aging. ICCK Transactions on Electric and Hybrid Vehicles, 1(1), 4–11. https://doi.org/10.62762/TEHV.2025.326438
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TY - JOUR AU - Zhang, Qi AU - Fu, Xiaoling AU - Pei, Wenhui PY - 2025 DA - 2025/07/28 TI - Coulomb Counting Method based SOC Estimation of Lithium-Ion Batteries Considering Battery Temperature and Aging JO - ICCK Transactions on Electric and Hybrid Vehicles T2 - ICCK Transactions on Electric and Hybrid Vehicles JF - ICCK Transactions on Electric and Hybrid Vehicles VL - 1 IS - 1 SP - 4 EP - 11 DO - 10.62762/TEHV.2025.326438 UR - https://www.icck.org/article/abs/TEHV.2025.326438 KW - SOC estimation KW - coulomb counting method KW - electric vehicles KW - battery management system AB - The Coulomb counting method is simple and effective in terms of state of charge (SOC) estimation of lithium-ion batteries. However, if the current measurement is not accurate, it will cause a cumulative calculation error, which will gradually increase with the time. And if the ambient temperature changes, the available capacity and initial SOC of the battery will also change. In order to solve the shortcomings of the traditional Coulomb counting method of SOC estimation, an improved method was proposed in this paper by taking into account the influence of battery temperature and aging on SOC. It can correct the initial value of SOC and the maximum available capacity of the battery more accurately, thus it solves the cumulative error problem, and improves the SOC estimation accuracy. A simple, accurate, and easy-to-implement method of battery SOC estimation is provided for the battery management system, which has practical application value. SN - pending PB - Institute of Central Computation and Knowledge LA - English ER -
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@article{Zhang2025Coulomb,
author = {Qi Zhang and Xiaoling Fu and Wenhui Pei},
title = {Coulomb Counting Method based SOC Estimation of Lithium-Ion Batteries Considering Battery Temperature and Aging},
journal = {ICCK Transactions on Electric and Hybrid Vehicles},
year = {2025},
volume = {1},
number = {1},
pages = {4-11},
doi = {10.62762/TEHV.2025.326438},
url = {https://www.icck.org/article/abs/TEHV.2025.326438},
abstract = {The Coulomb counting method is simple and effective in terms of state of charge (SOC) estimation of lithium-ion batteries. However, if the current measurement is not accurate, it will cause a cumulative calculation error, which will gradually increase with the time. And if the ambient temperature changes, the available capacity and initial SOC of the battery will also change. In order to solve the shortcomings of the traditional Coulomb counting method of SOC estimation, an improved method was proposed in this paper by taking into account the influence of battery temperature and aging on SOC. It can correct the initial value of SOC and the maximum available capacity of the battery more accurately, thus it solves the cumulative error problem, and improves the SOC estimation accuracy. A simple, accurate, and easy-to-implement method of battery SOC estimation is provided for the battery management system, which has practical application value.},
keywords = {SOC estimation, coulomb counting method, electric vehicles, battery management system},
issn = {pending},
publisher = {Institute of Central Computation and Knowledge}
}
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