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A Novel Battery Balancing Structure System Based on Wireless Power Transfer
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Yixuan LIU1, Miao ZHANG1, Shenping XIAO  Senior Member, CPSS2
Journal of Power Supply | 2026, 24(9) : 288 - 295
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Journal of Power Supply | 2026, 24(9): 288-295
• Wireless Power Transfer •
A Novel Battery Balancing Structure System Based on Wireless Power Transfer
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Yixuan LIU1, Miao ZHANG1, Shenping XIAO  Senior Member, CPSS2
Affiliations
  • 1.School of Automation, Guangdong University of Technology, Guangzhou 510006, China
  • 2.School of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China
Published: 2026-09-30 doi: 10.13234/j.issn.2095-2805.2026.9.288
Outline
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A novel architecture for battery balancing systems based on wireless power transfer (WPT) is proposed to address the challenges of complex external wiring, low integration and poor maintainability. In this system, wireless power transfer coils, batteries, and the balancing control unit are integrated into a single structure. By incorporating relay coils, energy exchange pathways between any two imbalanced units are established. An LCC resonant network is introduced to suppress interference from non-imbalanced units during energy transfer. To overcome efficiency degradation caused by variations in battery load during balancing, a maximum efficiency tracking (MET) control strategy is developed. This strategy employs a semi-active rectifier (SAR) to emulate the optimal load, ensuring the system consistently operates at its maximum efficiency. To verify the feasibility of the proposed system, a six-coil balancing experimental platform is constructed. Experimental results confirm the effectiveness of the proposed architecture and control strategy, demonstrating significantly enhanced energy transfer efficiency during balancing compared with existing WPT-based systems.

Wireless power transfer (WPT)  /  maximum efficiency tracking (MET)  /  battery equalization  /  electric vehicles
刘意轩, 张淼, 肖伸平中国电源学会高级会员. 一种基于WPT的新型电池均衡结构系统. 电源学报, 2026 , 24 (9) : 288 -295 . DOI: 10.13234/j.issn.2095-2805.2026.9.288
Yixuan LIU, Miao ZHANG, Shenping XIAO. A Novel Battery Balancing Structure System Based on Wireless Power Transfer[J]. Journal of Power Supply, 2026 , 24 (9) : 288 -295 . DOI: 10.13234/j.issn.2095-2805.2026.9.288
Funding
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  • National Key Research and Development Program of China(2019YFE0122600)
Appendix
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Year 2026 volume 24 Issue 9
40
12
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.9.288
  • Receive Date：2024-12-02
  • Online Date：2026-10-29
  • Published：2026-09-30
Article Data
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History
  • Received：2024-12-02
  • Revised：2025-01-17
  • Accepted：2025-02-17
Funding
National Key Research and Development Program of China(2019YFE0122600)
Affiliations
    1.School of Automation, Guangdong University of Technology, Guangzhou 510006, China
    2.School of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China
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