Electrolytic Capacitor Module Heat Dissipation Member Housing
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Solution Overview
Problem
Electrolytic capacitors face degradation due to heat generated from alternating charge/discharge currents, which is not efficiently dissipated, leading to reduced lifespan.
Innovation Solution
An electrolytic capacitor module design featuring a heat dissipation member with housing portions that directly contact the capacitor elements, eliminating gaps for enhanced heat conduction and reducing equivalent series resistance (ESR) through improved heat dissipation and sealing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a filler having high thermal conductivity is used to fill the space between capacitor elements, then heat dissipation is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts and eliminates the filler material from the structure. Instead of filling the space between capacitor elements with thermal conductivity filler, the design allows the capacitor elements to be directly mounted on the heat dissipation member, using the housing walls themselves for heat conduction. This simplifies the structure while maintaining effective heat dissipation.
Solution Approach 2:
The heat dissipation member serves multiple functions: it provides structural support as a housing, acts as a heat dissipation pathway through its walls, and eliminates the need for separate filler materials. The housing portions directly contact the capacitor elements to conduct heat, combining structural and thermal management functions in a single component.
2Temperature
If gaps are eliminated between capacitor elements and housing for enhanced heat conduction, then heat dissipation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The heat dissipation member is segmented into multiple housing portions, each independently housing a capacitor element. Each housing portion has its own insertion opening and sealing structure, allowing for modular assembly. This segmentation enables easier manufacturing and assembly while maintaining good thermal contact, as each section can be independently formed and assembled without requiring high precision across the entire structure.
3Reliability
If sealing members are added to seal insertion openings, then reliability is improved, but device complexity increases
Solution Approach 1:
The sealing function is merged with the housing structure. The sealing members are integrated into the heat dissipation member assembly, where they seal the insertion openings of the housing portions. This combination of sealing and housing functions in a unified structure reduces the need for separate sealing components while maintaining reliability.
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 extends the lifespan of electrolytic capacitors by efficiently radiating heat, reducing ESR, and eliminating the need for fillers, thereby increasing productivity and reducing costs.
Implementation Method 1
the heat dissipation member has a plurality of housing portions that respectively house the plurality of capacitor elements
Implementation Method 2
the heat generated from the plurality of capacitor elements is easily radiated to the outside
Data Source
AI summary
An electrolytic capacitor module includes a plurality of capacitor elements, an electrode lead, a sealing member, and a heat dissipation member. The electrode lead is electrically connected to each of the plurality of capacitor elements, and penetrates through the sealing member. The heat dissipation member has a plurality of housing portions that respectively house the plurality of capacitor elements. Further, the heat dissipation member has a first surface and a second surface opposite to the first surface. Each of the plurality of housing portions has an insertion opening opened in the first surface. The sealing member seals the insertion opening. The electrode lead is led out from the insertion opening.