Multi-Objective Optimal Charging Method for Lithium-Ion Batteries

Xiaogang Wu, Wenwen Shi and Jiuyu Du
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Xiaogang Wu: College of Electrical and Electronics Engineering, Harbin University of Science and Technology, Harbin 150080, China
Wenwen Shi: College of Electrical and Electronics Engineering, Harbin University of Science and Technology, Harbin 150080, China
Jiuyu Du: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China

Energies, 2017, vol. 10, issue 9, 1-18

Abstract: In order to optimize the charging of lithium-ion batteries, a multi-stage charging method that considers the charging time and energy loss as optimization targets has been proposed in this paper. First, a dynamic model based on a first-order circuit has been established, and the model parameters have been identified. Second, on the basis of the established model, we treat the objective function of the optimization problem as a weighted sum of charging time and energy loss. Finally, a dynamic programming algorithm (DP) has been used to calculate the charging current of the objective function. Simulation and experimental results show that the proposed charging method could effectively reduce the charging time and decrease the energy loss, compared with the constant-current constant-voltage charging method, under the premise of exerting little influence on the attenuation of battery capacity.

Keywords: lithium-ion battery; equivalent circuit model; charging optimization; dynamic programming (DP); capacity attenuation (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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