Chamfered Anode Layout for Compact High-Capacitance Capacitors
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Solution Overview
Problem
Existing electrolytic capacitors face challenges in achieving both high capacitance and downsizing simultaneously.
Innovation Solution
The electrolytic capacitor design includes a porous anode body with a buried anode wire and a protrusion part, a dielectric layer on the anode body, and a cathode part covering the dielectric layer, with chamfered corners on the anode body to maximize volume efficiency and reduce size while maintaining high capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the anode body is designed with conventional geometry, then the manufacturing process is simple, but the volume efficiency is low and the size cannot be reduced
Solution Approach 1:
The anode body is designed with chamfered corners instead of conventional rectangular geometry. This asymmetric design optimizes the internal space arrangement, allowing the protrusion part to extend from the chamfered surface and improving overall volume efficiency while maintaining manufacturing feasibility.
Solution Approach 2:
The protrusion part extends from the chamfered corner surface of the anode body, utilizing the three-dimensional space more effectively. This dimensional optimization allows for shorter conductive paths and better space utilization without compromising the basic rectangular structure.
2Reliability
If the conductive path is lengthened for reliable electrical connection, then the connection reliability is improved, but the device size increases
Solution Approach 1:
The protrusion part extends from the chamfered corner surface, utilizing the three-dimensional space to create a shorter conductive path. This spatial optimization reduces the distance for electrical connection while maintaining reliable contact between the anode wire and anode terminal.
3Volume of moving object
If the anode body size is reduced for downsizing, then the device compactness is improved, but the capacitance decreases
Solution Approach 1:
The anode body is designed with a porous structure that maximizes the surface area within a compact volume. This porous configuration allows for higher capacitance in a smaller size by increasing the effective surface area available for charge storage without increasing the overall device dimensions.
Solution Approach 2:
The chamfered corner design with protrusion part optimizes the internal volume arrangement, allowing more efficient use of the available space for capacitance-generating structures while maintaining a compact external dimensions.
Data Source
AI summary
An electrolytic capacitor including-includes an anode body that is porous, an anode wire including a buried part buried in the anode body and a protrusion part protruding to an outside of the anode body, a dielectric layer disposed on a surface of the anode body, a cathode part covering at least a part of the dielectric layer, an anode terminal electrically connected to the anode wire, and a cathode terminal electrically connected to the cathode part. A corner defined by three sides of the anode body is chamfered by an intersecting surface intersecting each of the three sides, the three sides intersecting each other. The protrusion part is protruded from the intersecting surface and is connected to the anode terminal.