Electric-drive vehicles utilizing lithium-ion batteries experience wholly different degradation patterns from conventional vehicles, depending on geographic ambient conditions and consumer driving and charging patterns. A semi-empirical life-predictive model for the lithium-ion graphite/nickel-cobalt-aluminum chemistry is presented, accounting for physically justified calendar and cycling fade mechanisms. An analysis of battery life for plug-in hybrid electric vehicles considers 782 duty-cycles from travel survey data, superimposed with climate data from multiple geographic locations around the United States. Based on predicted wear distributions, opportunities for extending battery life including modification of battery operating limits, thermal and charge control are discussed.


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    Titel :

    Battery Wear from Disparate Duty-Cycles: Opportunities for Electric Drive Vehicle Battery Health Management


    Beteiligte:
    K. Smith (Autor:in) / M. Earleywing (Autor:in) / E. Wood (Autor:in) / A. Pesaran (Autor:in)

    Erscheinungsdatum :

    2012


    Format / Umfang :

    9 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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