Exploiting the Electrochemical Impedance Spectroscopy Frequency Profiles for State-of-Health Predication of Lithium-Ion Battery

被引:2
|
作者
Al-Hiyali, Mohammed Isam [1 ,2 ]
Kannan, Ramani [1 ]
Alharthi, Yahya Z. [3 ]
Shutari, Hussein [4 ]
机构
[1] Univ Teknol PETRONAS, Dept Elect & Elect Engn, Seri Iskandar 32610, Perak, Malaysia
[2] AL Mansour Univ Coll, Med Instruments Technol Engn Dept, Baghdad 10068, Iraq
[3] Univ Hafr Albatin, Coll Engn, Dept Elect Engn, Hafar al Batin 39524, Saudi Arabia
[4] Univ Sains Malaysia, Sch Elect & Elect Engn, Nibong Tebal 14300, Penang, Malaysia
关键词
Lithium-ion batteries; battery management systems; soh predication; wavelet-machine learning; EIS-Frequency profiles;
D O I
10.1149/1945-7111/ad7b7a
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Battery Management Systems (BMS) are essential for optimizing battery performance and extending lifespan through continuous monitoring and decision-making via control sensors. The State of Health (SOH) is one of the BMS metrics that provides valuable information on battery health and degradation. However, one of the main challenges in the BMS domain development is finding accurate and effective algorithms for battery SOH prediction, especially for electric vehicles and grid-connected energy storage systems. This study introduces a new SOH prediction method using wavelet-convolutional neural regression networks (CNRN) algorithms. The methodology involves extracting detailed frequency profiles from Electrochemical Impedance Spectroscopy (EIS) data, which are processed through wavelet transformation to capture both time and frequency domain features. These transformed profiles are then input into the CNRN model for SOH prediction. The results demonstrate improved SOH prediction accuracy with EIS frequency profiles, evidenced by a reduction in root mean square error (RMSE) compared to the standard EIS profile. This improvement is due to the fact that the wavelet-CNRN algorithm efficiently captures both the time and frequency features of the battery impedance. Moreover, the performance of the proposed algorithm demonstrated robustness in early end-of-life (EOL) prediction, thereby enhancing the reliability and safety of BMS functions.
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页数:8
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