Coil Component Nonmagnetic Partition Magnetic Coupling
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Solution Overview
Problem
Existing coil components face challenges in adjusting magnetic coupling without enlarging the external dimensions of the magnetic core, while also preventing short circuit failures between conductors, especially in surface-mounted coupled inductors.
Innovation Solution
A coil component design featuring a magnetic core with through-holes and a nonmagnetic portion that communicates these holes, reducing the distance between conductors within the core to enhance magnetic coupling without increasing the core's volume, and using exposed, bent conductors as terminal electrodes to prevent short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the length L of the cavity is increased to enhance the magnetic coupling, then the magnetic coupling between conductors is improved, but the external dimensions of the magnetic core are enlarged
Solution Approach 1:
The invention transitions from adjusting magnetic coupling by changing the cavity length L (one-dimensional adjustment) to changing the thickness T of the partition wall (another dimensional approach). By making the partition wall thinner in the thickness direction, the magnetic coupling is enhanced without necessarily increasing the external dimensions of the magnetic core in other directions.
Solution Approach 2:
The invention changes the parameter being adjusted from cavity length L to partition wall thickness T. This parameter substitution allows for fine-tuning of magnetic coupling by controlling the thickness of the partition wall, thereby achieving desired magnetic coupling levels without proportionally increasing the overall core dimensions.
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 design allows for enhanced magnetic coupling without enlarging the core's external dimensions, reduces the risk of short circuits, and enables a compact, high-reliability power-supply device with improved work efficiency and production cost savings.
Implementation Method 1
a magnetic coupling be generated at a desired level between a pair of conductors through which the switching currents are passed
Data Source
AI summary
The coil component includes a magnetic core 130 and conductors 210 and 220. The magnetic core 130 includes through-holes that are made by grooves 111 and 112. The conductors 210 and 220 are provided in the grooves 111 and 112, respectively. The magnetic core 130 includes a nonmagnetic portion in which the grooves 111 and 112 are communicated, and a distance between the conductors 210 and 220 through the nonmagnetic portion is shorter than a distance between the conductors 210 and 220 in surfaces 110c and 110d in which the conductors 210 and 220 are exposed. Therefore, necessity to provide a large cavity in the magnetic core is eliminated, and a risk of the short circuit between terminal electrodes exposed in the surfaces 110c and 110d is also eliminated.