Capacitor Bypass Electrode Reduces Self-Inductance
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Solution Overview
Problem
Existing capacitors with large capacitance require dedicated connecting structures, making them inflexible and costly, and their self-inductance is not sufficiently reduced, leading to increased self-heating and reduced service life.
Innovation Solution
A capacitor design featuring a capacitor block with parallel-connected capacitor elements, utilizing a first and second electrode plate and at least one bypass electrode plate with integral joints, which reduces self-inductance and eliminates the need for a dedicated connecting structure, allowing for flexible specification changes and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a dedicated connecting structure is used to connect capacitor elements, then the capacitor can be assembled, but the device complexity increases and adaptability decreases
Solution Approach 1:
The patent merges the connecting structure with the capacitor block by integrating connection plates that extend from the capacitor block itself. The connection plates are formed as integral parts of the capacitor block structure, eliminating the need for separate dedicated connecting structures. This allows capacitor elements to be connected while reducing overall device complexity and improving adaptability to different specifications.
Solution Approach 2:
The connection plates serve multiple functions: they connect capacitor elements in parallel, provide structural support for the capacitor block, and enable flexible assembly configurations. The same connecting structure can accommodate different numbers and arrangements of capacitor elements, providing universality across various capacitor specifications without requiring dedicated structures for each case.
2Reliability
If parallel flat plates are used as connectors, then self-inductance is reduced, but the connecting length for folded electrodes is not sufficiently optimized
Solution Approach 1:
The patent extends connection plates not only in the planar direction but also in the thickness direction of the capacitor block. By making the connection plates extend beyond the end surfaces of the capacitor block in the thickness direction, the effective connecting length is increased without proportionally increasing the planar footprint. This dimensional extension optimizes the connecting length for folded electrodes while maintaining reduced self-inductance through the parallel plate configuration.
3Ease of operation
If an integral casing structure is used, then assembly is simplified, but flexibility for specification changes is reduced and cost increases
Solution Approach 1:
The patent segments the capacitor structure into modular components: capacitor elements that can be independently arranged, and connection plates that extend from the capacitor block. This segmentation allows the capacitor block to be configured with different numbers and arrangements of capacitor elements based on specification requirements, while the connection plates adapt accordingly. The modular design maintains assembly simplicity while providing flexibility for specification changes without requiring dedicated integral casing structures for each specification.
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 effectively lowers self-inductance, improves high-frequency characteristics, and prevents overheating by allowing for efficient heat dissipation, thereby extending the capacitor's service life and reducing production costs.
Implementation Method 1
at least one bypass electrode plate electrically bypassing the second electrode plate
Implementation Method 2
a capacitor having a large capacitance in excess of 100 μF employs a capacitor block that is fabricated by preparing a plurality of capacitor elements
Implementation Method 3
the capacitor elements and the connectors are self-heated and tend to have their service life shortened
Data Source
AI summary
This capacitor has: a single capacitor block provided with a plurality of capacitor elements electrically connected in parallel, each of said capacitor elements having a terminal part on each end; a first electrode plate that electrically connects the first terminal parts of the capacitor elements; a second electrode plate that electrically connects the second terminal parts of the capacitor elements and continues on to the side where the first terminal parts are; and at least one bypass electrode plate that electrically bypasses the second electrode plate.