A Novel Optimal Charging Algorithm for Lithium-Ion Batteries Based on Model Predictive Control

Guan-Jhu Chen, Yi-Hua Liu, Yu-Shan Cheng and Hung-Yu Pai
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Guan-Jhu Chen: Department of Electrical Engineering, National Taiwan University of Science and Technology, Da’an District, Taipei 10607, Taiwan
Yi-Hua Liu: Department of Electrical Engineering, National Taiwan University of Science and Technology, Da’an District, Taipei 10607, Taiwan
Yu-Shan Cheng: Department of Electrical Engineering, National Taiwan Ocean University, Zhongzheng District, Keelung 202301, Taiwan
Hung-Yu Pai: Department of Electrical Engineering, National Taiwan University of Science and Technology, Da’an District, Taipei 10607, Taiwan

Energies, 2021, vol. 14, issue 8, 1-18

Abstract: Lithium-ion (Li-ion) batteries play a substantial role in portable consumer electronics, electric vehicles and large power energy storage systems. For Li-ion batteries, developing an optimal charging algorithm that simultaneously takes rises in charging time and charging temperature into account is essential. In this paper, a model predictive control-based charging algorithm is proposed. This study uses the Thevenin equivalent circuit battery and transforms it into the state-space equation to develop the model predictive controller. The usage of such models in the battery optimal control context has an edge due to its low computational cost, enabling the realization of the proposed technique using a low-cost Digital Signal Processor (DSP). Compared with the widely employed constant current-constant voltage charging method, the proposed charging technique can improve the charging time and the average temperature by 3.25% and 0.76%, respectively.

Keywords: model predictive control; equivalent circuit model; lithium-ion battery (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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