Power Supply Thermal Conductive Material Containment
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Solution Overview
Problem
In power supply devices, the manual installation of heat transfer sheets for thermal conductivity can lead to errors such as forgotten or misaligned installations, and the use of thermal conductive materials with fluidity can result in overflow and interference with other components, affecting performance.
Innovation Solution
A power supply device design featuring protrusion sections with flat surfaces and stepped sections at the sidewalls to contain thermal conductive materials, preventing them from sticking to other components and ensuring reliable thermal conductivity and heat radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat transfer sheet is installed manually, then insulation and heat radiation properties are secured, but installation errors such as forgotten or misaligned installation may occur
Solution Approach 1:
The thermal conductive material is applied automatically by a dispenser without manual intervention, eliminating installation errors. The material self-aligns to the base plate surface and cures in place, providing reliable thermal conductivity without requiring precise manual positioning of heat transfer sheets.
2Ease of operation
If thermal conductive material with fluidity is applied, then installation ease is improved, but material overflow to surrounding components may occur
Solution Approach 1:
The base plate incorporates a recess portion specifically at the location where thermal conductive material is applied. This local structural modification creates a containment zone that allows the material to be applied easily in liquid form while preventing overflow onto surrounding electronic components, as the recess confines the material within its boundaries.
3Reliability
If application amount of thermal conductive material is increased, then thermal conductivity is improved, but material overflow increases
Solution Approach 1:
The recess portion in the base plate provides a localized containment structure that allows increased application of thermal conductive material to improve thermal conductivity. The recess boundaries prevent the additional material from overflowing onto surrounding components, thus enabling higher material application without the harmful effects of overflow.
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 enhances the reliability of thermal conductivity and heat radiation by containing thermal conductive materials, reducing the risk of performance degradation due to human error and material overflow, while maintaining stable connections post-curing.
Implementation Method 1
a thermal conductive material having fluidity is provided on the protrusion surface
Data Source
AI summary
As a thermal conductive material having fluidity is applied on a base plate, probability of a decrease in thermal conductive performance, i.e., probability of a decrease in a heat radiation property caused by a human work, can be suppressed in comparison with the case in which a heat transfer sheet is installed. When the thermal conductive material having fluidity is used, thermal conductive performance is obtained by applying the thermal conductive material is applied and thus reliability is improved. In addition, as stepped sections are formed at sidewalls of circumferential edges of protrusion surfaces on which the thermal conductive material is applied, even when the thermal conductive material having fluidity sticks out of the protrusion surfaces, since the thermal conductive material is accommodated in the stepped sections, the thermal conductive material is suppressed from sticking to another electronic component or the like to improve reliability.