Battery thermal simulation

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1

I am trying to do thermal analysis of a 21700 cell, without any cooling just natural air convection. The temperature of the cell is remaining constant independent of the duration of the simulation. Its showing the heating of the cell to be constant as if the battery is a constant heat source, whereas that is not the case for battery even under constant load the cell temperature continues to rise.
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heating of cell at 1000s
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heating of cell at 7200s
Kindly suggest any changes in the simualtion setting or if I am doing something wrong.
Thank you.

2

Hi @teamsolarmobil, thanks for posting on the forum and welcome to the SimScale Community :handshake:

I think you should define the temperature as an initial then see how it changes as time goes on in the transient simulation. Try looking at the following tutorial as an example:

Best,
Igor