Journal
ENERGY
Volume 230, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.120805
Keywords
Lithium-ion battery; State of charge; Immune genetic algorithm; Extended kalman particle filter; Second-order equivalent circuit model
Categories
Funding
- National Key Research and Development Program of China [2017YFB0103104]
- Science and Technology Special Project of Anhui Province [18030901063]
- Innovation Project of New Energy Vehicle and Intelligent Connected Vehicle of Anhui Province
- Foundation of State Key Laboratory of Automotive Simulation and Control
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This paper proposes a method using Extended Kalman Particle Filter to estimate the state of charge of lithium-ion battery by identifying parameters through Immune Genetic Algorithm, showing good adaptability and accuracy in experimental scenarios.
In this paper, based on the lithium-ion battery parameter identification by Immune Genetic Algorithm, An Extended Kalman Particle Filter approach is proposed to estimate the state of charge. Immune Genetic Algorithm was designed to identify the second-order equivalent circuit model parameters of lithium-ion battery. Combining Extended Kalman Filter with Particle Filter, Extended Kalman Particle Filter is designed to estimate the lithium-ion battery state of charge. This method is especially for the nonlinear and time variant lithium-ion battery system, and it can improve the calculation accuracy and stability of State of Charge estimation. An Immune Genetic Extended Kalman Particle Filter approach is validated by some experimental scenarios on the test bench. Experimental results show that Immune Genetic Extended Kalman Particle Filter has better adaptability, robustness and accuracy than Extended Kalman Filter under both UDDS and ECE conditions. Both theoretical and experimental results illustrate that Extended Kalman Particle Filter is a good candidate to estimate the lithium-ion battery state of charge. (c) 2021 Elsevier Ltd. All rights reserved.
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