Integrated Surge Suppression Layout for Compact Heat-Isolated AC Protection
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Solution Overview
Problem
Existing surge suppression devices are not adequately downsized, limiting their compactness and efficiency in suppressing surge voltage in three-phase alternating current systems.
Innovation Solution
A surge suppression device is designed with resistors and capacitors connected in series, where the resistors feature a substrate with a sintered resistive paste layer and are embedded in resin, and capacitors are also embedded in separate resin, allowing for miniaturization and efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional surge suppression devices are used, then surge voltage suppression function is provided, but device size is large
Solution Approach 1:
The patent merges the resistor and capacitor into a single integrated module where the capacitor is positioned directly on the resistor structure. The resistor includes a resistive-conducting layer on an insulating substrate, and the capacitor is formed with electrode plates that contact the resistor structure, creating a compact integrated assembly that reduces overall device volume while maintaining surge suppression functionality.
Solution Approach 2:
The patent transitions from conventional discrete component layouts to a three-dimensional integrated structure. The capacitor is positioned on top of the resistor in the vertical dimension, and conductive connections are established through vertical pathways, effectively utilizing spatial volume rather than only planar area, thereby reducing the device's footprint.
2Volume of moving object
If device size is reduced, then compactness is improved, but heat dissipation becomes difficult
Solution Approach 1:
The patent introduces a heat dissipation structure that acts as an intermediary between the resistor (heat source) and the ambient environment. This structure includes thermal conductive materials and pathways designed to efficiently transfer heat from the resistor to external surfaces, enabling effective heat dissipation in the compact integrated design.
Solution Approach 2:
The patent segments the heat dissipation function from the electrical function by providing dedicated thermal pathways and heat dissipation structures separate from the electrical connections. This allows independent optimization of both electrical performance and thermal management within the compact device.
3Volume of moving object
If device size is reduced, then compactness is improved, but heat transfer between components increases
Solution Approach 1:
The patent extracts the heat transfer pathway from the electrical connection pathway. By providing dedicated electrical connection structures that are thermally isolated from direct contact between the resistor and capacitor, the design prevents unwanted heat transfer while maintaining electrical functionality. The electrical connections are made through thermally resistive materials or pathways.
Solution Approach 2:
The patent applies different thermal properties to different regions of the device. The heat dissipation structure has high thermal conductivity to efficiently remove heat from the resistor, while the electrical connection structures have low thermal conductivity to prevent heat transfer to the capacitor. This localized differentiation of thermal properties enables compact design without harmful heat transfer.
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 enables a compact surge suppression device that effectively suppresses surge voltage while minimizing size and heat transfer between components, enhancing overall performance and efficiency.
Implementation Method 1
a resistive-conducting layer composed of a sintered resistive paste provided on the substrate
Data Source
AI summary
A surge suppression device is provided with a resistor, and a capacitor electrically connected to the resistor. The resistor includes a substrate and a resistive-conducting layer composed of a sintered resistive paste provided on the substrate.