Electronic Component Magnetic Permeability Anisotropic Isotropic
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Solution Overview
Problem
Existing electronic components employing isotropic and anisotropic magnetic materials with built-in coils face challenges in achieving high effective magnetic permeability due to changes in magnetic flux direction from easy to hard magnetization, limiting their performance.
Innovation Solution
The electronic component design includes anisotropic magnetic material covering the end surface of the coil parallel to the central axis and isotropic magnetic material adjacent in an orthogonal direction, ensuring minimal change in magnetic flux direction, thereby enhancing effective magnetic permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sheets composed of anisotropic magnetic material are stacked on upper and lower surfaces of the coil with easy magnetization direction orthogonal to the central axis, then the coil structure is stabilized, but the magnetic flux direction changes from easy magnetization to hard magnetization at the interface with isotropic magnetic material, reducing effective magnetic permeability
Solution Approach 1:
The patent applies local quality by making the easy magnetization direction of the anisotropic magnetic material uniform and parallel to the central axis of the coil, rather than having different orientations in different regions. This localized optimization at the interface between anisotropic and isotropic magnetic materials prevents the magnetic flux from transitioning to the hard magnetization direction, thereby maintaining high effective magnetic permeability while preserving structural stability.
2Object-generated harmful factors
If the direction of easy magnetization of anisotropic magnetic material is orthogonal to the central axis of the coil, then the magnetic flux can be contained within the coil structure, but the magnetic flux must change direction from easy to hard magnetization at the boundary, limiting effective magnetic permeability
Solution Approach 1:
The patent changes the critical parameter of the easy magnetization direction from being orthogonal to the central axis (conventional design) to being parallel to the central axis. This parameter change allows the magnetic flux to remain aligned with the easy magnetization direction throughout the anisotropic magnetic material, eliminating the need for direction change at the interface and thereby achieving high effective magnetic permeability while maintaining adequate magnetic flux containment.
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 allows for higher effective magnetic permeability by maintaining the magnetic flux direction, improving the component's performance compared to previous designs.
Implementation Method 1
A direction of easy magnetization of a portion of the anisotropic magnetic material that covers the end surface in a vicinity of an interface between the anisotropic magnetic material and the isotropic magnetic material coincides with the orthogonal direction
Implementation Method 2
magnetic flux generated by the coil of the electronic component according to the preferred embodiment of the present disclosure
Data Source
AI summary
An electronic component includes a body and a coil. The body includes first to fourth insulator layers composed of an anisotropic magnetic material, an internal magnetic circuit composed of an isotropic magnetic material and an external magnetic circuit composed of an isotropic magnetic material. The second and third insulator layers cover an upper surface and a lower surface of the coil from a z-axis direction. The internal magnetic circuit and the external magnetic circuit are adjacent to each other in a direction orthogonal to the z-axis direction. In addition, a direction of easy magnetization of the anisotropic magnetic material used in the first to fourth insulator layers is orthogonal to the z-axis direction.