Detail publikace

Modeling Heat Transfer in Cylindrical Batteries: Spiral-Based Thermal Conductivity Tensor

HVOŽĎA, J. BOHÁČEK, J. VAKHRUSHEV, A. KARIMI-SIBAKI, E.

Originální název

Modeling Heat Transfer in Cylindrical Batteries: Spiral-Based Thermal Conductivity Tensor

Typ

článek v časopise ve Scopus, Jsc

Jazyk

angličtina

Originální abstrakt

This study investigates the importance of considering the well-known spiral structure of cylindrical batteries in numerical models of heat transfer. Such models typically simplify the internal geometry by a concentric layout of electrodes and separators, resulting in an effective orthotropic thermal conductivity with radial, tangential, and axial components defined in a cylindrical coordinate system. However, the actual spiral structure suggests radius-dependent thermal conductivity. In this study, several thermal simulations were performed, comparing thermal fields obtained with the commonly used cylindrical orthotropy and a more realistic spiral structure. The results show that the spiral structure has a negligible effect on the overall temperature distribution for configurations with dense spirals and higher radial thermal conductivity (2 W·m−1·K−1). However, for lower radial thermal conductivity (0.2 W·m−1·K−1), considerable errors were observed even for dense spirals. These findings emphasize the need for studies to justify simplifications made in the thermal conductivity tensor.

Klíčová slova

Battery thermal management systems, Li-Ion cylindrical batteries, orthotropic thermal conductivity, spiral structure.

Autoři

HVOŽĎA, J.; BOHÁČEK, J.; VAKHRUSHEV, A.; KARIMI-SIBAKI, E.

Vydáno

30. 1. 2025

Nakladatel

Avestia Publishing

ISSN

2368-6111

Periodikum

Journal of Fluid Flow, Heat and Mass Transfer

Ročník

12

Číslo

1

Stát

Kanada

Strany od

23

Strany do

28

Strany počet

6

URL

https://jffhmt.avestia.com/2025/PDF/003.pdf

Plný text v Digitální knihovně

http://hdl.handle.net/11012/250774

BibTex

@article{BUT196473,
  author="Jiří {Hvožďa} and Jan {Boháček} and Alexander {Vakhrushev} and Ebrahim {Karimi-Sibaki}",
  title="Modeling Heat Transfer in Cylindrical Batteries: Spiral-Based Thermal Conductivity Tensor",
  journal="Journal of Fluid Flow, Heat and Mass Transfer",
  year="2025",
  volume="12",
  number="1",
  pages="23--28",
  doi="10.11159/jffhmt.2025.003",
  issn="2368-6111",
  url="https://jffhmt.avestia.com/2025/PDF/003.pdf"
}