Li-ion battery pack cooling using Phase changing material
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Hello,
I am planning to implement battery pack cooling using phase changing material using Simscape, Could anyone please pointout or refer any example files or reference models from Mathworks.
It will help me a lot to start with.
Regards
Chinmaya
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Yifeng Tang
2024년 1월 30일
Hi Chinmaya,
Just to get some clarification: does the material change phase between solid and liquid, or liquid and gas? And, when it's in liquid and/or gas phase, does it flow or it stays in place and provide more effective thermal inertia?
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Yifeng Tang
2024년 1월 31일
편집: Yifeng Tang
2024년 1월 31일
Hi Chinmaya,
This will involve some customization in Simscape language.
The simpliest implementation is to make a custom block based on the .ssc code of a thermal mass block, and make the specific heat an input instead of a parameter. Then use a PS lookup table to map temperature to the specific heat, where the Cp shoots up over a narrow range of temperature near the melting temperature and then comes down to single-phase Cp values. The integral of Cp*dT needs to match the latent heat.
Below are a few possible further enhancements, ordered by levels of difficulty in my opinion:
- make Cp(T) a parameter for the custom block and put the lookup function inside the .ssc code.
- define specific enthalpy vector h(T) instead of Cp(T) inside the custom block. You'll rewrite the governing equation as something like: Q == m * h.der
- instead of "faking" the phase change as a sudden jump in enthalpy over a small range, use "modechart" in Simscape language to define the melting and solidification behavior AT the phase change temperature.
Hope this helps.
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