Multilayer Capacitor Segmented Electrode Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multilayer capacitors face challenges in increasing equivalent series resistance while maintaining stable equivalent series inductance due to fluctuations in mounting direction, as existing designs directly connect all inner electrodes to terminal electrodes, leading to reduced resistance and increased inductance.
Innovation Solution
The design connects inner electrodes to each other with a connecting conductor and only a part to a terminal electrode with a lead conductor, ensuring symmetrical positioning to maintain equivalent series resistance and reduce inductance fluctuations by adjusting the number and position of connected electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If all inner electrodes are directly connected to terminal electrodes to increase capacitance, then the capacity increases, but the equivalent series resistance becomes smaller
Solution Approach 1:
The patent divides the inner electrodes into multiple groups (first inner electrodes and second inner electrodes) with different connection configurations. Some inner electrodes are connected to terminal electrodes while others are connected to each other through connecting conductors, creating segmented connection paths that increase equivalent series resistance while maintaining capacitance.
2Reliability
If only part of inner electrodes are connected to terminal electrode to increase equivalent series resistance, then the equivalent series resistance increases, but the equivalent series inductance fluctuates depending on mounting direction
Solution Approach 1:
The patent employs asymmetric connection configurations where first inner electrodes and second inner electrodes are connected differently to terminal electrodes. This asymmetric design, combined with symmetric positioning of connected electrodes, creates multiple current paths that stabilize equivalent series inductance regardless of mounting direction while maintaining increased equivalent series resistance.
Solution Approach 2:
The patent adjusts the number and positioning of inner electrodes connected to terminal electrodes as configurable parameters. By optimizing these parameters, the design achieves both increased equivalent series resistance and stabilized equivalent series inductance, allowing customization for different application requirements.
3Productivity
If the number of laminated layers is increased to respond to greater load current, then the capacity increases, but the equivalent series resistance becomes smaller
Solution Approach 1:
The patent segments the connection paths of inner electrodes within the multilayer structure. By connecting only part of the inner electrodes to terminal electrodes and connecting other inner electrodes to each other through connecting conductors, the design maintains high capacitance from multiple laminated layers while introducing additional resistance through the segmented connection paths, thus increasing equivalent series resistance to match higher load current requirements.
Data Source
AI summary
The multilayer body 1 is constructed by alternately laminating a plurality of dielectric layers 11 to 22 and a plurality of first and second inner electrodes 31 to 34, 31 to 34. The first inner electrodes 31 to 34 are electrically connected to each other through the first connecting conductor 7. The first inner electrode 31 is electrically connected to the first terminal electrode 3 through the lead conductor 37. The second inner electrodes 41 to 44 are electrically connected to each other through the second connecting conductor 9. The second inner electrode 44 is electrically connected to the second terminal electrode 5 through the lead conductor 47. The first inner electrode 31 and the second inner electrode 44 are arranged at respective positions symmetrical to each other about the center position M in the laminating direction of the multilayer body 1.