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Research into an Efficient Energy Equalizer for Lithium-Ion Battery Packs

Author

Listed:
  • Hongrui Liu

    (Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China)

  • Bo Li

    (Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China)

  • Yixuan Guo

    (Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China)

  • Chunfeng Du

    (Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China)

  • Shilong Chen

    (Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China)

  • Sizhao Lu

    (Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China)

Abstract

An efficient multi-mode energy equalizer for lithium-ion battery packs is proposed and energy balance strategies are studied in this paper. The energy balance strategies include the selection of the controlled object in the battery’s different working states and the current form of the controlled object. During the energy balancing process, the strongest single cell or the weakest single cell is selected as the controlled object according to the different working states of the battery, and the balanced current of the controlled object is continuous. Therefore, the energy equalizer proposed in this paper has a fast balancing speed, an improved balancing effect, and an excellent balancing reliability. According to the energy equalizer, the relevant experimental platform was built, and balance experiments in the battery’s different working states using a battery pack composed of four serially-connected lithium iron phosphate batteries were completed. Finally, the experimental results proved the effectiveness of the energy equalizer.

Suggested Citation

  • Hongrui Liu & Bo Li & Yixuan Guo & Chunfeng Du & Shilong Chen & Sizhao Lu, 2018. "Research into an Efficient Energy Equalizer for Lithium-Ion Battery Packs," Energies, MDPI, vol. 11(12), pages 1-11, December.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3414-:d:188256
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    References listed on IDEAS

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    1. Zuchang Gao & Cheng Siong Chin & Joel Hay King Chiew & Junbo Jia & Caizhi Zhang, 2017. "Design and Implementation of a Smart Lithium-Ion Battery System with Real-Time Fault Diagnosis Capability for Electric Vehicles," Energies, MDPI, vol. 10(10), pages 1-15, September.
    2. Mohamed Daowd & Mailier Antoine & Noshin Omar & Peter Van den Bossche & Joeri Van Mierlo, 2013. "Single Switched Capacitor Battery Balancing System Enhancements," Energies, MDPI, vol. 6(4), pages 1-26, April.
    3. Wenbiao Li & Longyun Kang & Xiangwei Guo & Yuan Yao, 2016. "Multi-Objective Predictive Balancing Control of Battery Packs Based on Predictive Current," Energies, MDPI, vol. 9(4), pages 1-12, April.
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    Cited by:

    1. Shing-Lih Wu & Hung-Cheng Chen & Chih-Hsuan Chien, 2019. "A Novel Active Cell Balancing Circuit and Charging Strategy in Lithium Battery Pack," Energies, MDPI, vol. 12(23), pages 1-17, November.

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