Cited by 233Advanced Battery Technologies ResearchAdvancements in Battery MaterialsElectric and Hybrid Vehicle Technologies

SOC Estimation of Li-ion Batteries With Learning Rate-Optimized Deep Fully Convolutional Network

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Hannan, M. A., How, D. N. T., Lipu, M. S. Hossain, Ker, Pin Jern, Dong, Z. Y., Mansur, M., Blaabjerg, Frede·2021·IEEE Transactions on Power Electronics

Abstract

In this letter, we train deep learning (DL) models to estimate the state-of-charge (SOC) of lithium-ion (Li-ion) battery directly from voltage, current, and battery temperature values. The deep fully convolutional network model is proposed for its novel architecture with learning rate optimization strategies. The proposed model is capable of estimating SOC at constant and varying ambient temperature on different drive cycles without having to be retrained. The model also outperformed other commonly used DL models such as the LSTM, GRU, and CNN on an open source Li-ion battery dataset. The model achieves 0.85% root mean squared error (RMSE) and 0.7% mean absolute error (MAE) at 25 °C and 2.0% RMSE and 1.55% MAE at varying ambient temperature (-20-25 °C).

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Crossref · 10.1109/tpel.2020.3041876

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  • Hannan et al. replaced the MLP with a full CNN for the output layer, creating a SOC estimator based on a fully convolutional network (FCN); it surpasses LSTM, GRU, and CNN-MLP methods in estimation accuracy, generalization ability, FLOPs, and runtime speed.

    “Hannan et al. replaced the MLP with a full CNN for the output layer, creating a SOC estimator based on a fully convolutional network (FCN)[67]. Resultantly, it surpasses LSTM, GRU, and CNN-MLP methods in estimation accuracy, generalization ability, floating point operations per second (FLOPs), and runtime speed.”

    From Advancements in the estimation of the state of charge of lithium-ion battery: a comprehensive review of traditional and deep learning approaches (2025) · cites this paper as [67]

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Authors
Hannan, M. A., How, D. N. T., Lipu, M. S. H., Ker, P. J., Dong, Z. Y., Mansur, M., & Blaabjerg, F.
Affiliations
  • Universiti Tenaga Nasional (MY)
  • National University of Malaysia (MY)
  • UNSW Sydney (AU)
  • Aalborg University (DK)
Venue
IEEE Transactions on Power Electronics
Published
2021-07
Volume
36
Issue
7
Pages
7349-7353
ISSN
  • 0885-8993 (ISSN-L)
  • 1941-0107
OpenAlex
W3107692354
Cited by
233
References
14
Citations by year
2026: 26 · 2025: 53 · 2024: 56 · 2023: 47 · 2022: 33 · 2021: 18
FWCI
9.06
Type
journal article
Language
en
Open access
Locations
  • IEEE Transactions on Power Electronics (publishedVersion)
  • VBN Forskningsportal (Aalborg Universitet) (submittedVersion, other-oa)
Funders
Ministry of Higher Education, Malaysia (20190101LRGS)
Topics
  • Physical Sciences › Engineering › Automotive Engineering › Advanced Battery Technologies Research
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
  • Physical Sciences › Engineering › Automotive Engineering › Electric and Hybrid Vehicle Technologies
Keywords
state of charge estimation, lithium-ion batteries, learning rate optimization, battery management systems, driving cycles, voltage and current measurement, battery temperature

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