A generic three-dimensional thermal model was developed for analyzing the thermal behavior of electric vehicle batteries. The model calculates temperature distribution and excursion of a battery during discharge, charge, and open circuit. The model takes into account the effects of heat generation, internal conduction and convection, and external heat dissipation on the temperature distribution in a battery. The three-dimensional feature of the model permits incorporation of various asymmetric boundary conditions; thus, the effects of cell orientation and packaging on thermal behaviour can be analyzed for a multiple-cell battery pack. Various modes of boundary heat transfer such as radiation, insulation, and natural and forced convections were also included in the model. Model predictions agreed well with the temperature distributions measured in nickel/iron batteries. Application of the thermal model to a closely packed 330 Ah module of five cells indicated that excessive temperature rise will occur upon discharge. Forced air convection is not effective for cooling the module.


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    Title :

    Three-dimensional thermal modeling of electric vehicle batteries


    Additional title:

    Dreidimensionales thermisches Modell von Batterien fuer Elektrofahrzeuge


    Contributors:
    Lee, J. (author) / Choi, K.W. (author) / Yao, N.P. (author) / Christianson, C.C. (author)

    Published in:

    Publication date :

    1986


    Size :

    6 Seiten, 21 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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