IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v324y2025ics0360544225015324.html
   My bibliography  Save this article

An asynchronous electro-thermal coupling modeling method of lithium-ion batteries under dynamic operating conditions

Author

Listed:
  • Liu, Wei
  • Teh, Jiashen
  • Alharbi, Bader

Abstract

Accurate parameter estimation is essential for assessing the performance of lithium-ion batteries (LIBs) in electric vehicles (EVs) and energy storage systems. However, the electro-thermal coupling effects within LIBs under dynamic operating conditions pose significant challenges for battery parameter identification and modeling. To address these challenges, this paper proposes an asynchronous electro-thermal coupling modeling method of LIBs, integrating a third-order RC equivalent circuit model (3RC_ECM) and a thermal model (TM). An innovative OCV identification method based on curve transformation is proposed, and an analytical OCV model based on the Nernst equation is developed. Accounting for real-time variation of OCV, an asynchronous parameter modeling method is proposed to identify different frequency parameters of 3RC_ECM. The key thermal parameters of TM are identified using the particle swarm optimization (PSO) algorithm based on the proposed OCV model. Experimental results validate that the method achieves a root mean square error (RMSE) below 9.38 mV, a mean absolute error (MAE) below 7.02 mV, and a mean absolute percentage error (MAPE) below 2.16 ‰, demonstrating superior accuracy and adaptability compared to traditional ECMs. The proposed model also offers robust parameter data and technical insights for battery state estimation under dynamic operational conditions.

Suggested Citation

  • Liu, Wei & Teh, Jiashen & Alharbi, Bader, 2025. "An asynchronous electro-thermal coupling modeling method of lithium-ion batteries under dynamic operating conditions," Energy, Elsevier, vol. 324(C).
    • Handle: RePEc:eee:energy:v:324:y:2025:i:c:s0360544225015324
    DOI: 10.1016/j.energy.2025.135890
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225015324
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.135890?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:324:y:2025:i:c:s0360544225015324. 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.