Deformable Heat Dissipation Sheet for Complex Component Cooling
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Solution Overview
Problem
Conventional heat dissipation methods struggle to efficiently cool heat generating components with complex shapes due to reduced contact areas between heat dissipation sheets and components, as well as between sheets and metal frames, leading to inadequate heat transfer.
Innovation Solution
A heat sink structure comprising a deformable heat dissipation sheet in areal contact with the outer surface of a heat generating component, interposed between the component and a heat sink, which is attached to a metal frame, with side walls and a main body part that extend to increase contact area, and optionally curved to match the component's shape, ensuring effective heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a flat heat dissipation sheet is used with a curved heat generating component, then the structure is simple, but the contact area between the heat dissipation sheet and the heat generating component becomes small
Solution Approach 1:
The patent employs a flexible heat dissipation sheet that can deform to conform to the curved surface of the heat generating component. This flexible thin film maintains good thermal contact across the entire curved surface area, solving the problem of reduced contact area while keeping the structure relatively simple.
Solution Approach 2:
The heat dissipation sheet is designed to match the curved geometry of the heat generating component. By adopting a curved configuration that follows the component's surface, the sheet maximizes the contact area between the heat dissipation sheet and the heat generating component, thereby improving heat transfer efficiency.
2Device complexity
If only the top of the deformed heat dissipation sheet contacts the metal frame, then the structure is simple, but the contact area between the heat dissipation sheet and the metal frame becomes small
Solution Approach 1:
The heat sink structure is divided into multiple contact points or regions along the metal frame. Instead of relying on a single contact point at the top, the heat dissipation sheet is configured to contact the metal frame at multiple locations, thereby increasing the total contact area and improving heat transfer to the frame.
3Reliability
If a heat sink structure is designed to increase contact area with complex shaped components, then cooling efficiency improves, but device complexity increases
Solution Approach 1:
The flexible heat dissipation sheet serves as a simple yet effective solution to adapt to complex component shapes without requiring a complex heat sink structure. The sheet's flexibility allows it to conform to various geometries while maintaining thermal contact, achieving good cooling efficiency with minimal structural complexity.
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 significantly increases the contact area between the heat sink and the heat generating component, enhancing the cooling efficiency even for components with complex shapes by ensuring extensive surface contact and improved heat transfer.
Implementation Method 1
heat generated by the heat generating component 1 is transferred to the metal frame 3 via the heat dissipation sheet 2
Implementation Method 2
heat transferred to the metal frame 3 via the heat dissipation sheet 2 and then discharged to atmosphere
Implementation Method 3
heat transferred to the metal frame 3 via the heat dissipation sheet 2 and then discharged to atmosphere
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An electronic device configured to efficiently cool a heat generating component with a complex shape. The electronic device is provided with a substrate, a heat generating component, a heat sink structure comprising a heat sink and a deformable heat dissipation sheet, and a flat metal frame, wherein the heat generating component is attached to the substrate, the heat dissipation sheet is in areal contact with at least part of the outer surface on one side of the heating component, which is opposite to the substrate, the heat sink covers a part of the heat generating component with the heat dissipation sheet interposed therebetween, and further, the heat sink is attached to the metal frame, and the outer surface of the heat generating component is a non-flat surface.