Removable Heat Sink Assemblies for Serviceable Electronics
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Solution Overview
Problem
Integral heat sinks in electronic products limit future upgrade options due to complexities in accessing circuit components, as removing the heat sink can damage or misalign gap pads, increasing costs and time for servicing.
Innovation Solution
A heat sink assembly with removable portions that create service zones or windows, allowing targeted access to specific components without disturbing other gap pads, enabling future upgrades and maintenance without destroying the heat sink's thermal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heat sink is made integral to the electronic product, then thermal management performance is improved, but future upgrade options and component accessibility are limited
Solution Approach 1:
The heat sink is divided into multiple detachable portions rather than being a single integral structure. The first portion remains attached to the circuit board while the second portion can be removed to access components, allowing both thermal management and upgradeability to coexist.
Solution Approach 2:
The heat sink transitions from a static integral structure to a dynamic configuration where portions can be selectively attached and detached. This dynamic design enables the heat sink to adapt between providing full thermal coverage and allowing component access based on operational needs.
2Ease of operation
If the heat sink is removed to access circuit components, then component accessibility is improved, but gap pads may be damaged or misaligned increasing servicing costs and time
Solution Approach 1:
The heat sink is segmented into removable and fixed portions. The removable second portion can be detached to access components without disturbing the fixed first portion that retains the gap pads in their correct positions, eliminating the risk of pad damage or misalignment during servicing.
Solution Approach 2:
The second portion of the heat sink is extracted as a separate removable component. This allows access to circuit components through the opening created by removal, while the gap pads remain attached to the first portion and are not subjected to damage or misalignment risks.
3Adaptability or versatility
If the heat sink is made removable to allow component access, then upgradeability is improved, but thermal integrity and heat dissipation efficiency may be compromised
Solution Approach 1:
The heat sink is divided into portions where the first portion remains permanently attached to maintain continuous thermal contact with the circuit board and components. The second portion can be removed for upgrades, but the remaining first portion preserves thermal integrity by maintaining heat conduction paths to heat-generating components.
Solution Approach 2:
Different portions of the heat sink have different functional qualities: the first portion provides permanent thermal management with gap pad attachment, while the second portion provides removable access. This local differentiation allows upgradeability in specific areas without compromising overall thermal integrity.
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
Facilitates targeted and efficient access to components for servicing and upgrading, reducing costs and time, while maintaining the heat sink's thermal performance and allowing for future configuration changes without locking in initial product specifications.
Implementation Method 1
The heat sink may be constructed from a material that has a relatively large thermal conductivity, such as copper or aluminum, for purposes of enhancing the conduction of thermal energy from the semiconductor component package
Implementation Method 2
the heat sink may have geometrical features to enhance the transfer of thermal energy through convection to the surrounding environment
Implementation Method 3
A deformable and thermally conductive material, called a 'gap pad,' may be disposed between the end surface of the pedestal and the outer surface of the semiconductor component package
Data Source
AI summary
An apparatus includes a chassis; a circuit board assembly; and a heat sink assembly. The circuit board assembly includes a component to be removably installed in the connector. The heat sink assembly forms a cover for the chassis. The heat sink assembly includes a first heat sink and a second heat sink. The first heat sink is attached to the chassis, and the first heat sink includes an opening in the cover that corresponds to a location of the component. The second heat sink is to be attached to the first heat sink to close the opening and to be removable from the first heat sink to allow access to the opening to service the component.