State of Health Estimation Method for Lithium-Ion Batteries Based on Multifeature Fusion and BO-BiGRU ModelSource: Journal of Electrochemical Energy Conversion and Storage:;2024:;volume( 022 ):;issue: 004::page 41001-1DOI: 10.1115/1.4066872Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The state of health (SOH) of lithium-ion batteries is a crucial parameter for assessing battery degradation. The aim of this study is to solve the problems of single extraction of health features (HFs) and redundancy of information between features in the SOH estimation. This article develops an SOH estimation method for lithium-ion batteries based on multifeature fusion and Bayesian optimization (BO)-bidirectional gated recurrent unit (BiGRU) model. First, a total of eight HFs in three categories, namely, time, energy, and probability, can be extracted from the charging data to accurately describe the aging mechanism of the battery. The Pearson and Spearman analysis method verified the strong correlation between HFs and SOH. Second, the multiple principal components obtained by kernel principal component analysis (KPCA) can eliminate the redundancy of information between HFs. The principal component with the highest correlation with SOH is selected by bicorrelation analysis to be defined as the fused HF. Finally, to improve SOH estimation accuracy, the BO-BiGRU model is proposed. The proposed method is validated using battery datasets from NASA. The results show that the SOH estimation accuracy of the BO-BiGRU model proposed in this article is high, while mean absolute error (MAE) is lower than 1.2%. In addition, the SOH of the lithium battery is estimated using different proportions of test sets, and the results show that the root-mean-square error (RMSE) and the mean absolute percentage error (MAPE) of the SOH remain within 3%, with high estimation accuracy and robustness.
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contributor author | Zhu, Junchao | |
contributor author | Zhang, Jun | |
contributor author | Kang, Jian | |
contributor author | Liu, ChengZhi | |
contributor author | Chen, Hua | |
contributor author | Wu, Tiezhou | |
date accessioned | 2025-04-21T09:58:43Z | |
date available | 2025-04-21T09:58:43Z | |
date copyright | 10/30/2024 12:00:00 AM | |
date issued | 2024 | |
identifier issn | 2381-6872 | |
identifier other | jeecs_22_4_041001.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4305235 | |
description abstract | The state of health (SOH) of lithium-ion batteries is a crucial parameter for assessing battery degradation. The aim of this study is to solve the problems of single extraction of health features (HFs) and redundancy of information between features in the SOH estimation. This article develops an SOH estimation method for lithium-ion batteries based on multifeature fusion and Bayesian optimization (BO)-bidirectional gated recurrent unit (BiGRU) model. First, a total of eight HFs in three categories, namely, time, energy, and probability, can be extracted from the charging data to accurately describe the aging mechanism of the battery. The Pearson and Spearman analysis method verified the strong correlation between HFs and SOH. Second, the multiple principal components obtained by kernel principal component analysis (KPCA) can eliminate the redundancy of information between HFs. The principal component with the highest correlation with SOH is selected by bicorrelation analysis to be defined as the fused HF. Finally, to improve SOH estimation accuracy, the BO-BiGRU model is proposed. The proposed method is validated using battery datasets from NASA. The results show that the SOH estimation accuracy of the BO-BiGRU model proposed in this article is high, while mean absolute error (MAE) is lower than 1.2%. In addition, the SOH of the lithium battery is estimated using different proportions of test sets, and the results show that the root-mean-square error (RMSE) and the mean absolute percentage error (MAPE) of the SOH remain within 3%, with high estimation accuracy and robustness. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | State of Health Estimation Method for Lithium-Ion Batteries Based on Multifeature Fusion and BO-BiGRU Model | |
type | Journal Paper | |
journal volume | 22 | |
journal issue | 4 | |
journal title | Journal of Electrochemical Energy Conversion and Storage | |
identifier doi | 10.1115/1.4066872 | |
journal fristpage | 41001-1 | |
journal lastpage | 41001-13 | |
page | 13 | |
tree | Journal of Electrochemical Energy Conversion and Storage:;2024:;volume( 022 ):;issue: 004 | |
contenttype | Fulltext |