An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion Battery

State-of-charge (SOC) estimation of lithium-ion battery is a key parameter of the battery management system (BMS). However, SOC cannot be obtained directly. In order to predict SOC accurately, we proposed a recurrent neural network called gated recurrent unit network that is based on genetic algorit...

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Main Authors: Jianlong Chen, Chenlei Lu, Cong Chen, Hangyu Cheng, Dongji Xuan
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/12/5/2305
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author Jianlong Chen
Chenlei Lu
Cong Chen
Hangyu Cheng
Dongji Xuan
author_facet Jianlong Chen
Chenlei Lu
Cong Chen
Hangyu Cheng
Dongji Xuan
author_sort Jianlong Chen
collection DOAJ
description State-of-charge (SOC) estimation of lithium-ion battery is a key parameter of the battery management system (BMS). However, SOC cannot be obtained directly. In order to predict SOC accurately, we proposed a recurrent neural network called gated recurrent unit network that is based on genetic algorithm (GA-GRU) in this paper. GA was introduced to optimize the key parameters of the model, which can improve the performance of the proposed network. Furthermore, batteries were tested under four dynamic driving conditions at five temperatures to establish training and testing datasets. Finally, the proposed method was validated on dynamic driving conditions and compared with other deep learning methods. The results show that the proposed method can achieve high accuracy and robustness.
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spelling doaj.art-397a7808f52a4d83b54ce0d7ff5eea5e2023-11-23T22:38:41ZengMDPI AGApplied Sciences2076-34172022-02-01125230510.3390/app12052305An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion BatteryJianlong Chen0Chenlei Lu1Cong Chen2Hangyu Cheng3Dongji Xuan4College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaCollege of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaState-of-charge (SOC) estimation of lithium-ion battery is a key parameter of the battery management system (BMS). However, SOC cannot be obtained directly. In order to predict SOC accurately, we proposed a recurrent neural network called gated recurrent unit network that is based on genetic algorithm (GA-GRU) in this paper. GA was introduced to optimize the key parameters of the model, which can improve the performance of the proposed network. Furthermore, batteries were tested under four dynamic driving conditions at five temperatures to establish training and testing datasets. Finally, the proposed method was validated on dynamic driving conditions and compared with other deep learning methods. The results show that the proposed method can achieve high accuracy and robustness.https://www.mdpi.com/2076-3417/12/5/2305lithium-ion batterystate-of-charge estimationbattery management systemgenetic algorithmgated recurrent unit neural network
spellingShingle Jianlong Chen
Chenlei Lu
Cong Chen
Hangyu Cheng
Dongji Xuan
An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion Battery
Applied Sciences
lithium-ion battery
state-of-charge estimation
battery management system
genetic algorithm
gated recurrent unit neural network
title An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion Battery
title_full An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion Battery
title_fullStr An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion Battery
title_full_unstemmed An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion Battery
title_short An Improved Gated Recurrent Unit Neural Network for State-of-Charge Estimation of Lithium-Ion Battery
title_sort improved gated recurrent unit neural network for state of charge estimation of lithium ion battery
topic lithium-ion battery
state-of-charge estimation
battery management system
genetic algorithm
gated recurrent unit neural network
url https://www.mdpi.com/2076-3417/12/5/2305
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