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Discharge curve-based formation of retired power batteries for secondary use

Author

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  • Ziyu Xiao
  • Siqi Wu

Abstract

To address the problem of optional group formation in the process of retired power batteries for secondary use, a detection method based on the ampere-time integration method is used for batch testing of retired power batteries. The dynamic time-bending dynamic time warping distance between different batteries is calculated by comparing the discharge curves during the testing process. Combining the remaining capacity, open circuit voltage and internal resistance of the battery as a common battery classification condition, each condition is normalised and a density canopy + K-means clustering algorithm is applied to regroup the retired power batteries. This method improves the regrouping technique for the retired batteries and improves the performance of the regrouped battery modules in terms of capacity and consistency.

Suggested Citation

  • Ziyu Xiao & Siqi Wu, 2021. "Discharge curve-based formation of retired power batteries for secondary use," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 16(3), pages 790-797.
    • Handle: RePEc:oup:ijlctc:v:16:y:2021:i:3:p:790-797.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctab010
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