Online Parameter Identification for State of Power Prediction of Lithium-ion Batteries in Electric Vehicles Using Extremum Seeking

  • Chun WeiEmail author
  • Mouhacine Benosman
  • Taesic Kim


Accurate state-of-power (SOP) estimation is critical for building battery systems with optimized performance and longer life in electric vehicles and hybrid electric vehicles. This paper proposes a novel parameter identification method and its implementation on SOP prediction for lithium-ion batteries. The extremum seeking algorithm is developed for identifying the parameters of batteries on the basis of an electrical circuit model incorporating hysteresis effect. A rigorous convergence proof of the estimation algorithm is provided. In addition, based on the electrical circuit model with the identified parameters, a battery SOP prediction algorithm is derived, which considers both the voltage and current limitations of the battery. Simulation results for lithium-ion batteries based on real test data from urban dynamometer driving schedule (UDDS) are provided to validate the proposed parameter identification and SOP prediction methods. The proposed method is suitable for real operation of embedded battery management system due to its low complexity and numerical stability.


Battery management system extremum seeking lithium-ion battery parameter identification state of power 


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Copyright information

© ICROS, KIEE and Springer 2019

Authors and Affiliations

  1. 1.College of Information EngineeringZhejiang University of TechnologyHangzhou, ZhejiangChina
  2. 2.Mitsubishi Electric Research LaboratoriesCambridgeUSA
  3. 3.Department of Electrical Engineering and Computer ScienceTexas AM University-KingsvilleKingsvilleUSA

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