Multilayer Electronic Component Inductance Optimization
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Solution Overview
Problem
Multilayer electronic components face challenges in achieving high inductance values due to magnetic flux cancellation within the coil structure, which also increases the risk of short circuits when attempting to optimize coil conductor connections.
Innovation Solution
The electronic component features a multilayer body with ring-shaped coil conductors and connecting portions that form an obtuse angle, reducing the area of magnetic flux cancellation regions and maintaining a safe distance to prevent short circuits, while via hole conductors connect adjacent coil portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If end portions of coil conductors are positioned inside the rectangular region enclosed by the coil conductors to connect without short circuit, then short circuit risk is reduced, but magnetic flux cancellation occurs in the enclosed region reducing inductance value
Solution Approach 1:
The connecting portion is designed with an asymmetric layout where the center line passes through a rectangular region, creating an obtuse angle configuration that breaks the symmetry of the traditional straight connection. This asymmetric arrangement reduces the area of magnetic flux cancellation region while maintaining safe distance between end portions, thereby increasing inductance value without compromising short circuit prevention
Solution Approach 2:
The invention transitions from a simple linear connection to a two-dimensional rectangular region configuration. By defining the center line of the connecting portion to pass through a rectangular region with sides parallel to the coil portion, the design utilizes spatial dimensionality to optimize both the safe distance for short circuit prevention and the reduction of magnetic flux cancellation area
2Ease of manufacture
If coil conductors are connected with straight lines to simplify structure, then manufacturing is easier, but magnetic flux cancellation region area is larger reducing inductance value
Solution Approach 1:
Instead of using a simple symmetric straight line connection, the invention employs an asymmetric connecting portion where the center line passes through a rectangular region and forms an obtuse angle with the coil portion. This asymmetric design maintains manufacturing simplicity while significantly reducing the magnetic flux cancellation region area, thereby increasing inductance value
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 increases the inductance value while minimizing the risk of short circuits, as demonstrated by computer simulations and comparative examples.
Implementation Method 1
a coil is formed that is composed of a plurality of coil conductors 204a and 204b... Lines of magnetic flux cancel each other out in this region E2
Data Source
AI summary
In an electronic component having a built-in coil composed of coil conductors with a length of one turn, the inductance value can be increased while suppressing generation of short circuits inside the coil conductors. The electronic component includes a multilayer body formed by stacking a plurality of magnetic layers on top of one another. The built-in coil includes coil conductors and via hole conductors. The coil conductors each have a ring-shaped coil portion having a cut out portion in one side of one corner thereof, and a connecting portion that form an obtuse angle with a side extending from one end portion of the coil portion and is positioned in a region enclosed or surrounded by the coil portion. Via hole conductors connect the plurality of coil conductors to one another.