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An Automatic Switched-Capacitor Cell Balancing Circuit for Series-Connected Battery Strings

Author

Listed:
  • Yuanmao Ye

    (Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • Ka Wai Eric Cheng

    (Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

Abstract

In this paper, a novel voltage equalizer is developed for series battery strings based on the two-phase switched capacitor technique. Different from the conventional voltage equalizers which are developed by switched-mode power converters, bulky magnetic components and complex monitoring and control system are avoided in the proposed system. Just a pair of complementary pulse signals with constant switching frequency and fixed duty ratio are required to control all of switches employed in the proposed voltage equalizer, and charge transfers from the higher voltage battery cells to lower voltage ones automatically. The circuit configuration and operation principle are provided in this paper. The model of the proposed voltage equalizer is also derived. Comparison with other works indicates that the proposed method is superior to the conventional switched-capacitor (SC) voltage equalizer for the high stack of series battery strings. Experimental results demonstrate that the proposed voltage equalization system is capable of excellent voltage balancing performance with a simple control method.

Suggested Citation

  • Yuanmao Ye & Ka Wai Eric Cheng, 2016. "An Automatic Switched-Capacitor Cell Balancing Circuit for Series-Connected Battery Strings," Energies, MDPI, vol. 9(3), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:3:p:138-:d:64677
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    References listed on IDEAS

    as
    1. Xiangwei Guo & Longyun Kang & Zhizhen Huang & Yuan Yao & Huizhou Yang, 2015. "Research on a Novel Power Inductor-Based Bidirectional Lossless Equalization Circuit for Series-Connected Battery Packs," Energies, MDPI, vol. 8(6), pages 1-22, June.
    2. Dong-Hua Zhang & Guo-Rong Zhu & Shao-Jia He & Shi Qiu & Yan Ma & Qin-Mu Wu & Wei Chen, 2015. "Balancing Control Strategy for Li-Ion Batteries String Based on Dynamic Balanced Point," Energies, MDPI, vol. 8(3), pages 1-18, March.
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    Citations

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    Cited by:

    1. João P. D. Miranda & Luis A. M. Barros & José Gabriel Pinto, 2023. "A Review on Power Electronic Converters for Modular BMS with Active Balancing," Energies, MDPI, vol. 16(7), pages 1-20, April.
    2. Das, Utpal Kumar & Shrivastava, Prashant & Tey, Kok Soon & Bin Idris, Mohd Yamani Idna & Mekhilef, Saad & Jamei, Elmira & Seyedmahmoudian, Mehdi & Stojcevski, Alex, 2020. "Advancement of lithium-ion battery cells voltage equalization techniques: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 134(C).
    3. Xiaolin Wang & Ka Wai Eric Cheng & Yat Chi Fong, 2019. "Zero Current Switching Switched-Capacitors Balancing Circuit for Energy Storage Cell Equalization and Its Associated Hybrid Circuit with Classical Buck-Boost," Energies, MDPI, vol. 12(14), pages 1-15, July.
    4. Xintian Liu & Yafei Sun & Yao He & Xinxin Zheng & Guojian Zeng & Jiangfeng Zhang, 2017. "Battery Equalization by Fly-Back Transformers with Inductance, Capacitance and Diode Absorbing Circuits," Energies, MDPI, vol. 10(10), pages 1-16, September.
    5. Shubiao Wang & Longyun Kang & Xiangwei Guo & Zefeng Wang & Ming Liu, 2017. "A Novel Layered Bidirectional Equalizer Based on a Buck-Boost Converter for Series-Connected Battery Strings," Energies, MDPI, vol. 10(7), pages 1-15, July.
    6. Shungang Xu & Kai Gao & Xiaobing Zhang & Kangle Li, 2019. "Double-Layer E-Structure Equalization Circuit for Series Connected Battery Strings," Energies, MDPI, vol. 12(22), pages 1-16, November.
    7. Yat Chi Fong & Ka Wai Eric Cheng & S. Raghu Raman & Xiaolin Wang, 2018. "Multi-Port Zero-Current Switching Switched-Capacitor Converters for Battery Management Applications," Energies, MDPI, vol. 11(8), pages 1-17, July.
    8. Ricardo Velho & Miguel Beirão & Maria Do Rosário Calado & José Pombo & João Fermeiro & Sílvio Mariano, 2017. "Management System for Large Li-Ion Battery Packs with a New Adaptive Multistage Charging Method," Energies, MDPI, vol. 10(5), pages 1-21, May.
    9. Sang-Won Lee & Yoon-Geol Choi & Bongkoo Kang, 2019. "Active Charge Equalizer of Li-Ion Battery Cells Using Double Energy Carriers," Energies, MDPI, vol. 12(12), pages 1-13, June.
    10. Yunlong Shang & Qi Zhang & Naxin Cui & Chenghui Zhang, 2017. "A Cell-to-Cell Equalizer Based on Three-Resonant-State Switched-Capacitor Converters for Series-Connected Battery Strings," Energies, MDPI, vol. 10(2), pages 1-15, February.
    11. Sekhar Raghu Raman & Ka-Wai (Eric) Cheng & Xiang-Dang Xue & Yat-Chi Fong & Simon Cheung, 2021. "Hybrid Energy Storage System with Vehicle Body Integrated Super-Capacitor and Li-Ion Battery: Model, Design and Implementation, for Distributed Energy Storage," Energies, MDPI, vol. 14(20), pages 1-22, October.
    12. Shun-Chung Wang & Chun-Yu Liu & Yi-Hua Liu, 2018. "A Fast Equalizer with Adaptive Balancing Current Control," Energies, MDPI, vol. 11(5), pages 1-15, April.

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