IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v308y2024ics0360544224024125.html
   My bibliography  Save this article

Influence of the air gaps between cells and the case of the storage battery on its representative temperatures

Author

Listed:
  • Kuznetsov, G.V.
  • Kravchenko, E.V.
  • Pribaturin, N.A.

Abstract

The thermal instability of modern batteries, their significant variety (Li-Ion, NiCd, LFP), the low thermal conductivity of many materials used in electrochemical systems, as well as the lack of methods for predicting the fire hazard of large-scale battery assemblies and modules lead to fires in such energy storage systems (ESS) under conditions of intensive operation. It is known that technological air gaps are required between battery cells in assemblies, as well as between the body of the battery assembly and the basic cells. Such gaps lead to a decrease in the intensity of heat removal from the basic battery cells. Until now, there has been no analysis of the effect of these gaps on the temperature of the basic cells. The purpose of the study was to theoretically analyze the influence of air gaps between the battery case and the prismatic basic cell on the thermal state of such an assembly (representative temperatures: maximum battery temperature; average battery temperature; temperature of the outer surface of the battery case). Numerical temperature analysis was performed in a two-dimensional formulation by solving a system of non-stationary heat conduction equations using the finite difference method for a typical battery during its charging. The results of numerical modeling show significant heterogeneity of the temperature field of the battery even for fairly moderate values of charge currents and voltages. It has been established that air gaps reduce the intensity of heat removal from the battery cells into the environment, which leads to an increase in the representative maximum temperature of the battery by an average of 2 °C in the typical range of changes in factors characterizing heat removal. Also, the obtained results show that it is incorrect to estimate the temperatures of the main working elements of the battery (electrodes and electrolyte) based on the temperature of the outer surface of the battery assembly housing with air gaps.

Suggested Citation

  • Kuznetsov, G.V. & Kravchenko, E.V. & Pribaturin, N.A., 2024. "Influence of the air gaps between cells and the case of the storage battery on its representative temperatures," Energy, Elsevier, vol. 308(C).
    • Handle: RePEc:eee:energy:v:308:y:2024:i:c:s0360544224024125
    DOI: 10.1016/j.energy.2024.132638
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544224024125
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2024.132638?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:308:y:2024:i:c:s0360544224024125. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.