Thermal Switch Metallization Array for Active Heat Flux Control
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Solution Overview
Problem
Current thermal management devices are passive and cannot simultaneously provide heat flux removal and amplification based on operating temperatures, limiting their ability to actively control heat flux direction.
Innovation Solution
A thermal switch with a metallization array on a substrate, comprising temperature-dependent thermally conductive segments that direct heat flux toward or away from a target region based on temperature ranges, using low and high temperature-activated materials to switch between heat flux shielding and amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If passive thermal management devices with temperature-independent thermal conductivity are used, then the device structure is simple, but the device cannot provide both heat flux removal and heat flux amplification based on operating temperatures
Solution Approach 1:
The thermal management device is segmented into multiple metallization layers with different thermal conductivity characteristics. Each layer is designed to operate in specific temperature ranges, enabling the composite structure to provide both heat flux removal and amplification functions that a single material cannot achieve alone.
Solution Approach 2:
The patent employs composite metallization structures combining materials with different temperature-dependent thermal conductivity properties. This composite approach allows the device to exhibit dual functionality - heat flux removal at certain temperatures and heat flux amplification at other temperatures - resolving the contradiction between versatility and structural simplicity.
2Ease of operation
If temperature-dependent thermally conductive metallization segments are used, then active heat flux control is achieved, but the metallization array complexity increases
Solution Approach 1:
The metallization array incorporates materials whose thermal conductivity dynamically changes with temperature. This dynamic property allows the device to automatically adjust heat flux direction and magnitude based on operating conditions without requiring external control systems, achieving active heat flux control while managing structural complexity through material selection.
3Adaptability or versatility
If a single device is used for thermal management, then the device structure is simplified, but the device cannot provide both heat flux removal and heat flux amplification
Solution Approach 1:
The thermal management device is designed as a multi-functional unit capable of performing both heat flux removal and heat flux amplification within a single integrated structure. By incorporating metallization layers with complementary thermal conductivity characteristics, the device achieves universality in thermal control functions while maintaining structural integration, thereby ensuring reliable thermal management performance across varying operating conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables active heat flux control by switching between heat flux shielding and amplification within specific temperature ranges, maintaining isothermal conditions and optimizing cooling efficiency or thermal energy harvesting.
Implementation Method 1
A metallization array is coupled to the substrate and is positioned adjacent to the target region, the metallization array includes a plurality of first temperature dependent thermally conductive metallization segments and a plurality of second temperature dependent thermally conductive metallization segments
Data Source
AI summary
A thermal switch includes a substrate having a target region and a peripheral region. A metallization array is coupled to the substrate and is positioned adjacent the target region, the metallization array including a plurality of first temperature dependent thermally conductive metallization segments and a plurality of second temperature dependent thermally conductive metallization segments. The metallization array directs heat flux toward the target region within a first temperature range and directs heat flux away from the target region within a second temperature range.