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Reconfigurable equilibrium circuit with additional power supply

Author

Listed:
  • Yu Zhang
  • Mingming Huang
  • Tiezhou Wu
  • Feng Ji

Abstract

The reconfigurable equilibrium circuit can take account of the number of components and the conversion efficiency and can easily balance every single cell in the battery pack, but the voltage of the battery pack will fluctuate when the battery pack is balanced. To solve this problem, a reconfigurable equalization circuit with an additional power supply is proposed. By replacing the cell with the additional power supply, the purpose of stabilizing the voltage of the battery pack is achieved. Aiming at the additional power supply, this paper puts forward a method that the additional power supply participates in the charging (discharging) process when the SOC (state of charge) of the battery pack is not lower (higher) than the additional power supply while the battery pack is charging (discharging), to make the charge and discharge capacity of the additional power supply always better than the battery pack. The experimental results show that the proposed equalization circuit can not only retain the advantages of the traditional reconfigurable equilibrium circuit but also maintain the voltage of the battery pack in the equalization process.

Suggested Citation

  • Yu Zhang & Mingming Huang & Tiezhou Wu & Feng Ji, 2020. "Reconfigurable equilibrium circuit with additional power supply," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 15(1), pages 106-111.
    • Handle: RePEc:oup:ijlctc:v:15:y:2020:i:1:p:106-111.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctz063
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    References listed on IDEAS

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    1. Wang, Shunli & Shang, Liping & Li, Zhanfeng & Deng, Hu & Li, Jianchao, 2016. "Online dynamic equalization adjustment of high-power lithium-ion battery packs based on the state of balance estimation," Applied Energy, Elsevier, vol. 166(C), pages 44-58.
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