Method for dimensioning battery and thermal management systems for heavy-duty vehicle applications using aged battery experimental data and advanced modelling techniques

Samu Kukkonen, Ville Erkkilä, Aino Manninen, Jari Haavisto, Mikko Pihlatie

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    During the life of a Li-Ion battery, capacity and power capability fade. Despite this degradation, an electric vehicle battery needs to deliver designed power performance until battery end-of-life. Comprehension of battery performance degradation is required to design sufficient margin for power capability and thermal management. This paper proposes battery laboratory testing combined with advanced modelling techniques to obtain design parameters based on aged batteries. Laboratory cell aging and characterization tests are performed to parametrise models, which are used to verify electric city bus battery performance at various lifetime levels. The modelling gives an indication on the level of margin that needs to be designed for power capability and thermal management. The results obtained indicate that from performance point of view, the battery that was studied can be utilized well beyond 80% capacity point while still retaining power capability and low cell level power losses.
    Original languageEnglish
    Pages (from-to)83-95
    JournalECS Transactions
    Volume68
    Issue number2
    DOIs
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed
    Event14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015 - Glasgow, United Kingdom
    Duration: 26 Jul 201531 Jul 2015

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