Circuit Board Metal Case Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic components on circuit boards generate heat, leading to overheating which can degrade their performance and potentially cause damage, and existing heat dissipation methods are limited in efficiency and flexibility.
Innovation Solution
A circuit board design featuring a metal case with an enclosed space containing a heat-exchanging fluid and porous material, which facilitates additional paths of heat transfer between electronic components and heat-dissipating members, enhancing heat dissipation efficiency and flexibility in component arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional heat dissipation methods are used, then the structure is simple, but heat dissipation efficiency is insufficient
Solution Approach 1:
The heat dissipation system is segmented into multiple functional components: a metal case containing heat-exchanging fluid, porous material for capillary action, thermal conduction paths, and convection channels. This segmentation allows each component to perform a specific heat transfer function, improving overall heat dissipation efficiency while maintaining manageable structural complexity through modular design.
Solution Approach 2:
Porous material is introduced into the metal case to enable capillary action for heat-exchanging fluid circulation. The porous structure provides large surface area for heat transfer and facilitates passive fluid movement through capillary forces, enhancing heat dissipation efficiency without requiring additional active pumping mechanisms.
2Productivity
If electronic components are densely arranged, then productivity increases, but heat accumulation worsens
Solution Approach 1:
The heat dissipation system transitions from two-dimensional surface cooling to three-dimensional volumetric cooling by embedding the metal case with heat-exchanging fluid and porous material within the circuit board structure. This dimensional transition creates multiple internal heat transfer paths, enabling effective heat dissipation even with dense component arrangement, thereby improving both productivity and thermal management.
Solution Approach 2:
The metal case serves multiple functions: it provides structural support, acts as a thermal conduction path, contains heat-exchanging fluid for convection cooling, and houses porous material for capillary action. This multi-functionality allows the same structure to handle both mechanical support and thermal management, enabling dense component arrangement without compromising heat dissipation.
3Temperature
If heat dissipation structure is enhanced, then temperature control improves, but manufacturing complexity increases
Solution Approach 1:
The heat-exchanging fluid is pre-filled into the metal case during the manufacturing process, and the porous material is pre-positioned within the case structure. These preliminary actions ensure proper thermal management functionality is built-in during assembly, simplifying later manufacturing steps and reducing the need for complex post-assembly thermal management adjustments.
Solution Approach 2:
The metal case, porous material, and heat-exchanging fluid are merged into a single integrated heat dissipation module that is embedded within the circuit board structure. This merging combines multiple heat transfer mechanisms (conduction, convection, capillary action) into one unified structure, improving temperature control while streamlining the manufacturing process by reducing the number of separate components to be assembled.
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 design effectively dissipates heat generated by electronic components, improving their performance and reliability by providing multiple paths for heat transfer, thus preventing overheating and enhancing the circuit board's thermal management capabilities.
Implementation Method 1
The metal case is thermally coupled to the support layer
Implementation Method 2
a heat-exchanging fluid distributed within the enclosed space
Implementation Method 3
a first porous material distributed within the enclosed space. The first porous material is disposed on the first inner surface
Data Source
AI summary
A circuit board includes an insulation part, a support layer disposed on the insulation part, a metal case disposed in the insulation part, a heat-exchanging fluid distributed within the enclosed space, and a first porous material distributed within the enclosed space. The metal case is thermally coupled to the support layer and includes a first inner surface, a second inner surface opposite to the first inner surface and positioned between the first inner surface and the support layer, a third inner surface connecting the first inner surface and the second inner surface, and an enclosed space surrounded by the first inner surface, the second inner surface and the third inner surface. The first porous material is disposed on the first inner surface.