Learning Forum

[m_gonser]

Hey guys,

i am currently modelling the thermal behaviour of a battery cell. Therefore i am using ANSYS Mechanical thermal-electric. I Introduced Joule heat to calculate the heating effects of my terminals and connections. Due to oxidation, there is a oxide layer at the terminal (red lines in picture) producing a ohmic resistance. Now i want to calculate the power loss/ heat generation due to the Ohmic resistance. (Ohmic resistance is measured and a constant value)

As i inserted Joule heating in my model, i cannot create an electric contact conductance.

I thought about adding a very thin solid, adding a heat generation (current^2*ohmic resistance) but then i have an additional joule heating in the solid because of the current flow.

Is there another way to define a heat generation/ contact resistance between two surfaces?

[dlooman]

The joule heat you specified should not prevent you from specifying a thermal contact conductance for contact elements between the two surfaces. The thermal conductance specified for the contact elements will produce the heat produced by the ohmic resistance of the contact.