Circuit Board Metal Core Thermal Insulation
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Solution Overview
Problem
As microprocessors and electronic components become more powerful and compact, they generate increasing amounts of heat, posing a risk of damage and reducing their lifespan due to inadequate heat dissipation in smaller volumes, necessitating improved thermal management solutions.
Innovation Solution
A circuit board with a metal core featuring multiple portions of varying thicknesses and heights, providing distinct thermal conductivity characteristics, and an insulator material to facilitate effective heat dissipation, where the metal core includes copper, aluminum, or brass, and is fabricated using processes like stamping and machining to create recesses and trenches for enhanced thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If integrated circuit components are scaled down in size and packed more densely, then equipment capability and power increase, but heat generation increases and heat dissipation becomes more difficult
Solution Approach 1:
The metal core is divided into multiple portions with different thicknesses (first portion, second portion, third portion) that correspond to different thermal zones. Each portion has different thermal conductivity characteristics tailored to specific regions, allowing differentiated heat management across the circuit board.
Solution Approach 2:
Different portions of the metal core are assigned different thicknesses and thermal conductivity properties based on local heat generation requirements. High-power areas receive thicker metal core portions with higher thermal conductivity, while low-power areas have thinner portions, optimizing heat dissipation locally.
2Ease of manufacture
If a uniform thickness metal core is used, then manufacturing is simpler, but thermal management effectiveness is reduced
Solution Approach 1:
The metal core is segmented into multiple portions with varying thicknesses created through selective machining or removal of material. This segmentation enables differentiated thermal management while maintaining a single-piece construction that is relatively easy to manufacture.
Solution Approach 2:
The thickness parameter of the metal core is varied across different regions to optimize thermal conductivity where needed. By changing the thickness parameter locally rather than uniformly, the design achieves superior thermal management while keeping the manufacturing process straightforward.
3Temperature
If heat dissipation structures are added to manage thermal gradients, then temperature control improves, but device complexity increases
Solution Approach 1:
The thermal management function is merged into the metal core itself by creating portions of different thicknesses within the same component. This eliminates the need for separate thermal management layers or structures, reducing overall device complexity while maintaining effective heat dissipation.
Solution Approach 2:
The metal core serves multiple functions simultaneously: it provides mechanical support, electrical grounding, and differentiated thermal management. By making the metal core multi-functional with varying thicknesses, the design achieves complex thermal control without adding separate dedicated thermal management components.
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
The solution effectively manages heat dissipation by creating thermal gradients and insulation, preventing overheating and extending the lifespan of electronic components, even in densely packed systems.
Implementation Method 1
a first portion and a second portion of the metal core may each comprise at least five percent (5%)—and in some embodiments, at least 10%—of the metal core by volume
Implementation Method 2
an insulator material disposed on the metal core
Data Source
AI summary
Techniques and mechanisms for providing thermal insulation with a circuit board. In an embodiment, a circuit board comprises a metal core and an electrical insulator disposed thereon. A first portion and a second portion each comprise at least five percent of the metal core by volume, wherein a first surface of the first portion is at a first level along a height axis, and a second surface of the second portion is at a second level along the height axis. A difference between the first level and the second level is less than, and at least twenty percent of, an overall thickness of the metal core. In another embodiment, the metal core further comprises a trench portion disposed between the first portion and the second portion, wherein a thickness of the trench portion is less each of the respective thicknesses of the first portion and the second portion.