Lithium-ion polymer battery has been widely used for vehicle onboard electric energy storage ranging from 12V SLI (Starting, Lighting, and Ignition), 48V mild hybrid electric, to 300V battery electric vehicle. Formulation on cell parameters acquired from minimum numbers of experiments, the modeling and simulation could be an effective approach in predicting battery performance, thermal effectiveness, and degradation. This paper describes the modeling, simulation, and validation of Lithium-Nickel-Manganese-Cobalt-Oxide (LiNiMnCoO2) based cell with 3.6V nominal voltage and 20Ah capacity. Constant current 20A, 40A, 60A, and 80A discharge tests are conducted in the computer-controlled cycler and temperature chamber. Discharging voltage curves and cell surface temperature distributions are recorded in each discharging test. A three-dimensional cell model is constructed in the COMSOL multi-physics platform based on the cell parameters. The model validation is performed by experimental discharging voltage curves and cell surface temperature data. Simulated data matches the experiments with acceptable discrepancy. As a cell is the building block to form high-voltage battery module and pack, the developed cell model could play an important role in battery pack development and design.


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    Title :

    Lithium-Ion Battery Cell Modeling with Experiments for Battery Pack Design


    Additional title:

    Sae Technical Papers


    Contributors:
    Lai, Ming-Chia (author) / Liao, Y. Gene (author) / Liu, Yiqun (author)

    Conference:

    WCX SAE World Congress Experience ; 2020



    Publication date :

    2020-04-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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