Electric Power ›› 2025, Vol. 58 ›› Issue (1): 196-204.DOI: 10.11930/j.issn.1004-9649.202401111

• New Energy and Energy Storage • Previous Articles    

Estimation of Model Parameters of Lithium Batteries Based on Kalman Filtering Optimized by Dung Beetle Algorithm

Tian XIA1(), Daifei LIU2(), Jiahui YUE1, Laien CHEN1, Yiliang Li3   

  1. 1. School of Electrical and Information Engineering, ChangSha University of Science and Technology, Changsha 410114, China
    2. School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, China
    3. ChangGao Dianxin Science and Technology Co., Ltd., Changsha 410219, China
  • Received:2024-01-25 Accepted:2024-04-24 Online:2025-01-23 Published:2025-01-28
  • Supported by:
    This work is supported by National Natural Science Foundation of China (Research on Energy Regulation Mechanism and Crossing Control of Multi-bridge Arm Active Response of Converter under AC side Fault in flexible DC Transmission, No.51977014).

Abstract:

The identification of parameters for lithium batteries is an important basis for battery state prediction. An improved kalman filtering (KF) based on dung beetle optimizer (DBO) is proposed for online identification of battery model parameters. This method utilizes the rapid global search for optimal solutions characteristic of DBO to optimize the covariance matrices of process noise and observation noise in KF, thereby improving the accuracy of identifying battery model parameters. Simulation experiment data shows that compared to the parameter identification results based on unoptimized KF, the variance that the identification results of this method compared to the true values are significantly reduced, resulting in the predicted parameter values are closer to the true values.

Key words: lithium battery, parameter identification, kalman filter, dung beetle optimizer, covariance matrix