The cycle life of lithium-ion batteries was investigated using a modified USABC electric vehicle testing protocol designed to simulate the effect of a hybrid energy-storage system (ultracapacitor and battery) in a plug-in hybrid electric vehicle. A side-by-side comparison of battery capacity and impedance changes with and without the effect of the ultracapacitor was performed. Calendar-life degradation effects were corrected for using control cells. The battery’s rate of cycle-related capacity degradation decreased by a factor of 2 and rate of cycle-related impedance degradation, by a factor of 5.9 when exposed to the ultracapacitor-modified profile. The modified profile avoids exposure to regeneration energy and reduces maximum voltage of the battery.


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    Titel :

    Effect of ultracapacitor-modified PHEV protocol on performance degradation in lithium-ion cells


    Beteiligte:
    Hochgraf, Clark G. (Autor:in) / Basco, John K. (Autor:in) / Bohn, Theodore P. (Autor:in) / Bloom, Ira (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2014


    Format / Umfang :

    5 Seiten, 14 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





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