Conductive Cooling Channel Capacitor for Compact Heat Dissipation
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Solution Overview
Problem
Existing capacitors face challenges in efficiently dissipating heat, particularly in compact designs used in power electronic components like inverters and DC/DC converters, which can lead to reduced service life.
Innovation Solution
The capacitor design incorporates electrically conductive cooling channels disposed between the capacitor layers, which serve to efficiently dissipate heat while also carrying electrical potential and functioning as a winding core, thereby enhancing compactness and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If cooling channels are added between capacitor layers to improve heat dissipation, then service life is extended, but device complexity increases
Solution Approach 1:
The cooling channel is designed to perform multiple functions simultaneously: it serves as a thermal management pathway for heat dissipation, an electrical conductor for potential carrying, and a structural winding core for the capacitor layers. This multi-functionality resolves the contradiction by integrating what would otherwise be separate components into a single element, extending service life through effective cooling while avoiding the complexity increase that would result from adding separate cooling channels, electrical conductors, and winding cores.
2Volume of moving object
If capacitor size is reduced for compact design, then space efficiency improves, but heat dissipation capability deteriorates
Solution Approach 1:
The cooling channel is nested within the capacitor structure, with capacitor layers wound around it. This nesting arrangement allows the cooling channel to be positioned centrally within the compact capacitor volume, enabling efficient heat dissipation from the inner layers while maintaining a small overall capacitor size. The nested configuration maximizes thermal management effectiveness within the constrained volume.
Solution Approach 2:
The cooling channel serves as a multi-functional element that simultaneously provides thermal management, electrical conduction, and structural support. This integration allows the capacitor to achieve compact dimensions without sacrificing heat dissipation capability, as the same structural element that enables small size also facilitates efficient cooling.
3Power
If power output is increased for higher performance, then functionality is improved, but heat generation increases reducing service life
Solution Approach 1:
The cooling channel structure converts the harmful effect of increased heat generation (from higher power output) into a beneficial thermal management system. The same structural element that provides mechanical support and electrical conduction also serves as an efficient heat dissipation pathway, allowing the capacitor to sustain high power outputs without compromising service life through effective thermal management.
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 design effectively addresses the heat dissipation challenge, enabling a compact and efficient capacitor that can handle high power outputs with extended service life, particularly suitable for applications in motor vehicles.
Implementation Method 1
the cooling channel is disposed between the capacitor layers, and wherein the cooling channel is electrically conductive
Implementation Method 2
the cooling channel is electrically conductive
Data Source
AI summary
A capacitor is disclosed that includes a plurality of electrically conductive capacitor layers wound around a winding center and a cooling channel, wherein the cooling channel is disposed between the capacitor layers, and wherein the cooling channel is electrically conductive. A system and a motor vehicle that includes the capacitors is also disclosed.