Active Equalization for Lithium-Iron Battery Pack Based on Reduced-Order Solving Strategy for the Hanoi Tower Problem

Zhengyu Xia, Xi Chen (), Xingjiang Chi, Binxin Zhu, Lei Zhang and Yuehua Huang
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Zhengyu Xia: College of Electrical Engineering and New Energy, China Three Gorges University, No. 8 Daxue Road, Yichang 443002, China
Xi Chen: College of Electrical Engineering and New Energy, China Three Gorges University, No. 8 Daxue Road, Yichang 443002, China
Xingjiang Chi: State Grid Beijing Electric Power Company, No. 41 Qianmen West Street, Beijing 100031, China
Binxin Zhu: College of Electrical Engineering and New Energy, China Three Gorges University, No. 8 Daxue Road, Yichang 443002, China
Lei Zhang: College of Electrical Engineering and New Energy, China Three Gorges University, No. 8 Daxue Road, Yichang 443002, China
Yuehua Huang: College of Electrical Engineering and New Energy, China Three Gorges University, No. 8 Daxue Road, Yichang 443002, China

Energies, 2024, vol. 17, issue 12, 1-21

Abstract: In order to address the energy imbalance issue of a series-connected lithium-iron battery pack, this paper proposes an active equalization method based on a reduced-order solving strategy for the Hanoi Tower problem. The proposed scheme utilizes a combined structure of a switching-network circuit and a bidirectional Cuk converter and leverages an ultracapacitor cell as the energy-transfer carrier. Simulation and comparison demonstrate that the exchange of unbalanced energy within the battery pack can be achieved. The proposed approach can effectively achieve various balancing modes such as cell-to-cell, cell-to-string, string-to-cell, and string-to-string with a relatively fast balancing speed.

Keywords: lithium-iron battery pack; active equalization; bidirectional Cuk converter; Hanoi tower problem (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: 2024
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