Thermally Conductive Polymer Enclosure for Electrical Systems
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Solution Overview
Problem
Legacy enclosures for electrical systems in harsh and hazardous environments face degradation and corrosion due to metallic heat sinks, which are not ideal for exposure to corrosive and extreme conditions, and lack effective heat dissipation.
Innovation Solution
A thermally conductive polymer enclosure with integrated heat-dissipating elements made from a polymer matrix with thermally conductive fillers, providing superior thermal conductivity, corrosion resistance, and mechanical strength, while being lighter than traditional metallic enclosures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If metallic heat sinks are used in legacy enclosures, then heat dissipation is achieved, but corrosion and degradation occur in harsh environments
Solution Approach 1:
The patent employs a composite material consisting of a polymer matrix embedded with thermally conductive filler particles. This composite structure combines the corrosion resistance and environmental durability of polymers with the high thermal conductivity of the filler material, resolving the contradiction between heat dissipation performance and corrosion resistance in harsh environments.
2Strength
If traditional metallic enclosures are used, then structural strength is provided, but weight is excessive
Solution Approach 1:
The patent changes the material parameters by selecting a polymer matrix with appropriate mechanical properties and optimizing the filler particle characteristics (size, shape, distribution, and concentration). This parameter optimization enables the composite to achieve sufficient mechanical strength for structural applications while maintaining the inherent lightweight advantage of polymer-based materials compared to traditional metals.
3Temperature
If thermally conductive fillers are added to polymer matrix, then thermal conductivity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent extracts the heat dissipation function from separate metallic heat sink components and integrates it directly into the polymer enclosure material itself. By incorporating thermally conductive filler particles throughout the polymer matrix, the enclosure structure performs both structural and thermal management functions simultaneously, eliminating the need for separate heat sink assemblies and simplifying the overall manufacturing process.
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 thermally conductive polymer enclosure effectively dissipates heat generated by electrical systems, withstands harsh environments, and extends the operational lifespan by resisting corrosion and environmental damage, while being lighter and more durable than traditional metallic solutions.
Implementation Method 1
The one or more heat dissipating elements are configured to dissipate heat generated by the electronic switches, and each of the one or more heat dissipating elements is made of the thermally conductive polymer material
Data Source
AI summary
An apparatus includes: a power converter including a plurality of electronic switches, the electronic switches being controllable to produce a driver signal having a variable amplitude, frequency, and/or phase; and a single-piece base made of a thermally conductive polymer material. The single-piece base includes: a first side configured to hold the power converter; a second side; and one or more heat dissipating elements that extend from the second side. The heat dissipating elements are configured to dissipate heat generated by the electronic switches, and each of the one or more heat dissipating elements is made of the thermally conductive polymer material.