Curved Magnetic Core Inductor Structure for Higher Inductance
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Solution Overview
Problem
Current inductor structures have limited energy storage capability, restricting the increase in inductance, which affects the performance of electronic devices.
Innovation Solution
The inductor structure features a magnetic core column with sequentially arranged parts and a wire wound around it, including curved side walls and defined cross-sectional ratios, enhancing inductance by increasing the number of turns and cross-sectional area within a limited space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the magnetic core column uses a traditional rectangular cross-section, then the manufacturing is simple, but the inductance is limited due to smaller cross-sectional area
Solution Approach 1:
The magnetic core column employs a curved cross-sectional shape (rounded corners or circular section) instead of a traditional rectangular shape. This curvature increases the cross-sectional area for the same bounding box dimensions, thereby increasing the inductance while maintaining manufacturability through standard molding processes.
Solution Approach 2:
The patent optimizes the aspect ratio H/M of the magnetic core column cross-section to be within (1.2, 1.8). By changing this geometric parameter, the design achieves maximum inductance within the constrained space while maintaining practical manufacturing dimensions.
2Quantity of substance
If the inductor structure is enlarged to increase inductance, then the inductance increases, but the space occupation increases
Solution Approach 1:
The patent optimizes the vertical dimension (height H) relative to the horizontal width (M) by controlling the H/M ratio. This dimensional optimization allows the inductor to achieve higher inductance by utilizing the vertical space more effectively, thereby increasing inductance without proportionally increasing the horizontal footprint.
Solution Approach 2:
The curved cross-sectional design maximizes the use of available space within the bounding box by eliminating empty corners associated with rectangular shapes. This increases the effective magnetic core area and thus the inductance, without increasing the external dimensions.
3Quantity of substance
If the number of wire turns is increased to increase inductance, then the inductance increases, but the space occupation increases
Solution Approach 1:
The curved cross-sectional shape of the magnetic core column allows for more efficient wire winding. The rounded surfaces enable tighter and more uniform wire turns, increasing the number of effective turns that can be accommodated within the same volume, thereby increasing inductance without increasing the horizontal footprint.
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 increases inductance, enabling higher energy storage and performance in compact sizes, suitable for chip-integrated applications with improved stability and reduced DC resistance.
Implementation Method 1
The wire is wound around the magnetic core column and configured for electrical connection with a circuit board
Data Source
AI summary
The present application provides an inductor structure, a circuit board and an electronic device. The inductor structure includes a magnetic core column and a wire. The magnetic core column includes a first part, a second part and a third part arranged sequentially along a first direction, the first part has a first side wall facing away from the second part, and the third part has a second side wall facing away from the second part. The wire is wound around the magnetic core column and is configured to be electrically connected to the circuit board.