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Triply periodic minimal surfaces for thermo-mechanical protection
Samantha Cheung1, Jiyun Kang1, Yujui Lin1
1Mechanical Engineering, Stanford University, Stanford, CA, 94305, USA.
Scientific Reports
|January 11, 2025
Summary
Copper-plated 3D-printed triply periodic minimal surface (TPMS) lattices offer tunable thermal and mechanical properties for battery thermal management. These composite TPMS structures show promise for efficient heat dissipation while maintaining mechanical integrity.
Area of Science:
- Materials Science
- Mechanical Engineering
- Thermal Management
Background:
- Triply periodic minimal surface (TPMS) metamaterials are promising for thermal management but face integration challenges due to strict mechanical requirements.
- Composite TPMS lattices offer enhanced control over thermal and mechanical properties through material and geometric modifications.
Purpose of the Study:
- To fabricate and evaluate copper-plated, 3D-printed TPMS primitive lattices for battery thermal management systems.
- To investigate the effects of lattice geometry and copper thickness on pressure drop, mechanical properties, and thermal conductivity.
Main Methods:
- Fabrication of copper-plated, 3D-printed TPMS primitive lattices.
- Experimental measurement of pressure drop, mechanical properties (elastic modulus, compressive strength), and thermal conductivity.
- Integration of lattices into a multichannel cold plate for performance evaluation.
Main Results:
- Lattices exhibited pressure drops under 6.5 kPa at 1 LPM flow rate, decreasing with increased channel width.
- A 0.43% copper volume loading more than tripled thermal conductivity while maintaining polymer-like compliance.
- Increased lattice relative density enhanced elastic modulus and compressive strength without affecting thermal conductivity.
Conclusions:
- TPMS lattice design allows for decoupling of parameters controlling pressure drop, mechanical response, and thermal conductivity.
- This decoupling enables the achievement of a wide range of properties for complex multiphysics systems, particularly in thermal management applications.
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