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Energies 2017, 10(9), 1271;

Multi-Objective Optimal Charging Method for Lithium-Ion Batteries

1,2,* , 1,3
College of Electrical and Electronics Engineering, Harbin University of Science and Technology, Harbin 150080, China
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Author to whom correspondence should be addressed.
Academic Editor: Izumi Taniguchi
Received: 1 August 2017 / Revised: 18 August 2017 / Accepted: 23 August 2017 / Published: 26 August 2017
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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. View Full-Text
Keywords: lithium-ion battery; equivalent circuit model; charging optimization; dynamic programming (DP); capacity attenuation lithium-ion battery; equivalent circuit model; charging optimization; dynamic programming (DP); capacity attenuation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wu, X.; Shi, W.; Du, J. Multi-Objective Optimal Charging Method for Lithium-Ion Batteries. Energies 2017, 10, 1271.

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