Spacer Parts Suppress Magnetic Interference in Array Inductors
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Solution Overview
Problem
In array-type inductors, the miniaturization of electronic components has led to increased mutual interference between internal coil parts, making it difficult to suppress harmful magnetic field interference through shape adjustments alone, which can cause malfunction and efficiency deterioration.
Innovation Solution
The use of spacer parts made from materials with lower magnetic permeability, such as thermosetting resin, magnetic metal powder, or ferrite, positioned between internal coil parts within the magnetic body to control the interval and material composition, effectively reducing magnetic field interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If array-type inductor with multiple internal coil parts is used to decrease mounting area, then productivity and miniaturization are improved, but harmful mutual interference of magnetic fields increases
Solution Approach 1:
A spacer part made of non-magnetic material (such as resin or plastic) is introduced as an intermediary substance between the first and second internal coil parts. This spacer part physically separates the coil parts and interrupts the magnetic field coupling, thereby suppressing harmful mutual interference while maintaining the compact array-type structure. The spacer part acts as a magnetic field barrier without requiring increased spacing between components.
2Object-generated harmful factors
If internal coil parts are spaced apart to reduce magnetic field interference, then magnetic field interference is suppressed, but device volume increases
Solution Approach 1:
The spacer part is strategically positioned only in specific locations where magnetic field interference occurs between internal coil parts, rather than uniformly increasing spacing throughout the entire component. This localized approach suppresses harmful magnetic field coupling at critical interfaces while maintaining compact overall dimensions. The spacer part's dimensions and position are optimized to provide magnetic field isolation only where necessary.
3Ease of manufacture
If shape adjustments are made to suppress magnetic field interference, then manufacturing complexity is reduced, but effectiveness of suppression deteriorates
Solution Approach 1:
Instead of relying on complex shape modifications of the internal coil parts or magnetic body, a simple spacer part made of conventional non-magnetic material is introduced between the coil parts. This spacer part can be easily manufactured using standard molding or insertion techniques, and effectively suppresses magnetic field interference through its physical presence and magnetic properties, rather than through geometric complexity.
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 configuration effectively suppresses harmful mutual interference of magnetic fields between internal coil parts, maintaining inductance and preventing product malfunction while optimizing efficiency.
Implementation Method 1
suppressing mutual interference of magnetic fields generated by the first and second internal coil parts
Data Source
AI summary
An electronic component includes a magnetic body, and first and second internal coil parts embedded in the magnetic body spaced apart from each other and including coil conductors disposed on first and second surfaces of a support member. First and second spacer parts are disposed between the first and second internal coil parts in upper and lower portions of the magnetic body, respectively, with an interval therebetween.