Segmented Heat Sink Base Abutment for Warpage Compensation
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Solution Overview
Problem
Existing cooling structures, such as heat sinks, face challenges in achieving high cooling performance due to warpage of heat generating components caused by thermal expansion coefficient differences, limiting effective contact and heat conduction.
Innovation Solution
A cooling structure comprising multiple heat radiation parts with base and fin portions, held by a holding member that allows base portions to abut each other, ensuring contact with the heat generating component even during warpage, and utilizing heat radiation grease for thermal conductivity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling structure is used to cool a heat generating component, then cooling performance is improved, but warpage of the heat generating component due to thermal expansion coefficient differences causes poor contact between the cooling structure and the heat generating component
Solution Approach 1:
The cooling structure is divided into multiple heat radiation parts (first, second, third, and fourth heat radiation parts) that can independently contact the heat generating component. This segmentation allows each part to adapt to local warpage variations, ensuring reliable contact across the entire component surface despite thermal expansion differences.
Solution Approach 2:
The holding member is configured to allow the heat radiation parts to move relative to each other in response to warpage of the heat generating component. This dynamic adjustment capability enables the cooling structure to maintain firm contact with the component even when the component deforms due to thermal expansion coefficient differences.
2Temperature
If multiple heat radiation parts are provided to improve cooling performance, then heat radiation area is increased, but heat conduction between the heat radiation parts becomes impossible without connection structures
Solution Approach 1:
The base portions of adjacent heat radiation parts are positioned to abut against each other, creating direct thermal contact pathways. This merging of adjacent bases ensures efficient heat conduction between the heat radiation parts while maintaining their structural independence for adapting to warpage.
3Stability of the object's composition
If the heat radiation parts are made rigid to maintain structural stability, then structural stability is improved, but adaptability to warpage of the heat generating component decreases
Solution Approach 1:
Dividing the cooling structure into multiple separable heat radiation parts allows each segment to be rigid for structural stability while the collection of segments can collectively adapt to warpage through relative movement, resolving the contradiction between individual rigidity and overall adaptability.
Solution Approach 2:
The holding member enables dynamic relative movement between the heat radiation parts while each part maintains its own rigid structure. This dynamic configuration allows the system to adapt to warpage without compromising the structural stability of individual 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
This configuration enables efficient heat transfer and contact with the heat generating component, enhancing cooling performance by accommodating warpage and promoting heat conduction between heat radiation parts.
Implementation Method 1
a fin portion extending from the base portion and radiating heat
Implementation Method 2
The plurality of base portions abut on each other... promoting heat conduction between heat radiation parts
Data Source
AI summary
A cooling structure includes a plurality of heat radiation parts configured to cool a heat generating component and a holding member configured to hold the plurality of heat radiation parts. Moreover, the heat radiation parts of the cooling structure each include a base portion located on the side of the heat generating component and a fin portion extending from the base portion and radiating heat. Furthermore, the base portions of the heat radiation parts abut on each other.