Thermal Behavior and Insulation Strategies for Li-FeS₂ Thermal Batteries: An ANSYS Simulation Study

Year : 2024 | Volume : 11 | Issue : 03 | Page : 45 52
    By

    KwangIl Ri,

  • ChoWon Kim,

  • Yong Il Won,

  1. Faculty,, Department of Chemical Engineering, KimChaek University of Technology, Pyongyang,, DPR Korea
  2. Faculty,, Department of Chemical Engineering, KimChaek University of Technology, Pyongyang,, DPR Korea
  3. Faculty,, Department of Chemical Engineering, KimChaek University of Technology, Pyongyang,, DPR Korea

Abstract

Thermal batteries are special electrochemical systems in which a great amount of energy is delivered during a relatively short period of time. The holding time of the thermal battery’s working temperature and cell temperature define its discharge life. Thermal batteries have their advantages comparing other type of batteries, so they are used for several purposes including military field. Thermal batteries usually operate in the internal temperature range of 400 to 550℃. For that reason, it is important to analyze temperature field of thermal batteries to select and determine the insulation material and the thickness of that. This study discusses the thermal analysis of a thermal battery with ANSYS software. Thermal consideration should be done on all components of the thermal battery, and the design parameters of components of the thermal battery should be determined that can extend thermal lifetime to the maximum. To examine the correct solution value of thermal battery temperature field analysis by the ANSYS thermal analysis, analytic model is made since the structure of Li-FeS2 thermal battery that was already developed and the temperature changing process inside thermal battery was considered by the analytic simulation method established in this study. To make the thermal battery operate in a regular way, a side heat insulation structure was designed. The result of simulation analysis of temperature changing process at the upper, lower and medium part of battery stack of the designed Li-FeS2 thermal battery and result of discharge test proves that thermal design of Li-FeS2 thermal battery satisfies technical properties required in the battery. In this research, a new method of calculating the thickness of insulation layer is reported and its correctness is ensured with ANSYS simulation.

Keywords: thermal batteries, thermal design, thermal insulation

[This article belongs to Journal of Thermal Engineering and Applications ]

How to cite this article:
KwangIl Ri, ChoWon Kim, Yong Il Won. Thermal Behavior and Insulation Strategies for Li-FeS₂ Thermal Batteries: An ANSYS Simulation Study. Journal of Thermal Engineering and Applications. 2024; 11(03):45-52.
How to cite this URL:
KwangIl Ri, ChoWon Kim, Yong Il Won. Thermal Behavior and Insulation Strategies for Li-FeS₂ Thermal Batteries: An ANSYS Simulation Study. Journal of Thermal Engineering and Applications. 2024; 11(03):45-52. Available from: https://journals.stmjournals.com/jotea/article=2024/view=183943


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Regular Issue Subscription Original Research
Volume 11
Issue 03
Received 03/10/2024
Accepted 14/10/2024
Published 19/11/2024
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