What question did this study set out to answer?

To develop an electro-thermal model that accurately estimates internal temperatures in lithium-ion batteries using geometry-resolved simulation.

March 1, 2026Open Access

Geometry-Resolved Electro-Thermal Modelling of Cylindrical Lithium-Ion Cells Using 3D Simulation and Thermal Network Reduction

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Authors

MBMartin BataSlovak University of Technology in Bratislava MPMilan PlzákSlovak University of Technology in Bratislava MUMichal Miloslav Ulicny

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Implication

This work presents a novel method for estimating internal temperature in lithium-ion batteries, indicating improved safety and performance evaluation.

Key Points

To develop an electro-thermal model that accurately estimates internal temperatures in lithium-ion batteries using geometry-resolved simulation.
Integrated 3D finite volume thermal modelling with reduction to a compact multi-node thermal network
Reconstructed a realistic 3D model of Panasonic NCR18650B cell from CT data
Coupled the thermal model with an equivalent circuit electrical model in MATLAB/Simulink
Validated the model against thermal conductivity measurements and dynamic loading tests in a thermal chamber
Achieved an automated reduction to a five-node thermal network preserving radial temperature distribution
Showed strong agreement in surface temperature with a mean absolute error of approximately 0.43 °C
Demonstrated a mean absolute error of approximately 16 mV in terminal voltage under dynamic loading

Cite This Study

Bata et al. (2026) studied this question.

synapsesocial.com/papers/69a3d811ec16d51705d2ea53 https://doi.org/10.5281/zenodo.18802573

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Implication

This work presents a novel method for estimating internal temperature in lithium-ion batteries, indicating improved safety and performance evaluation.

Geometry-Resolved Electro-Thermal Modelling of Cylindrical Lithium-Ion Cells Using 3D Simulation and Thermal Network Reduction

Discussion

Member takes

Implication

Key Points

Cite This Study

Geometry-Resolved Electro-Thermal Modelling of Cylindrical Lithium-Ion Cells Using 3D Simulation and Thermal Network Reduction

Discussion

Member takes

Implication

Key Points

Cite This Study

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