Incremental capacity analysis (ICA) has proven to be an effective tool for determining the state of health (SOH) of Li-ion cells under laboratory conditions. This paper deals with an outstanding challenge of applying ICA in practice: the evaluation of battery series connections. The study uses experimental aging and characterization data of lithium iron phosphate (LFP) cells down to 53% SOH. The evaluability of battery series connections using ICA is confirmed by analytical and experimental considerations for cells of the same SOH. For cells of different SOH, a method for identifying non-uniform aging states on the modules’ IC curve is presented. The findings enable the classification of battery modules with series and parallel connections based on partial terminal data.


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    Titel :

    Incremental Capacity Analysis as a State of Health Estimation Method for Lithium-Ion Battery Modules with Series-Connected Cells


    Beteiligte:
    Krupp, Amelie (Autor:in) / Ferg, Ernst E. (Autor:in) / Schuldt, Frank (Autor:in) / Derendorf, Karen (Autor:in) / Agert, Carsten (Autor:in)

    Erschienen in:

    Batteries ; 7 , 1 ; 1-13


    Erscheinungsdatum :

    2020-12-30



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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