Thin closed magnetic circuit inductor and manufacturing method thereof

Abstract

The invention provides a thin closed magnetic circuit inductor and a manufacturing method thereof. The method comprises the following steps of: mixing a powdery magnetic material and a powdery adhesive to form a solid mixture according to a preset ratio; putting a magnetic core with a convex part into a mold in an upwards convex part mode; arranging a coil on the magnetic core, so that the convex part of the magnetic core penetrates through a hollow part of the coil; filling the solid mixture into the mold so as to cover the first surface of the convex part of the magnetic core, the convex part and the coil; and finally, heating the solid mixture in the mold, so that the powdery magnetic material is adhered through the powdery adhesive so as to coat the coil and the convex part of the magnetic core, and high-pressure forming is not required during heating. The manufacturing cost of the thin closed magnetic circuit inductor can be reduced, the production efficiency is improved, and the inductance of the inductor is improved.

Description

technical field [0001] The invention relates to a thin closed magnetic circuit inductor and a manufacturing method thereof, in particular to a thin closed magnetic circuit inductor encapsulated by a solid mixture and a manufacturing method thereof. Background technique [0002] Inductor is a kind of passive component, which has the functions of wave filtering, noise reduction, instantaneous current suppression, EMI reduction and power conversion, etc. It has been widely used in various electronic products for a long time. [0003] Chip inductors have the advantages of small size and standardized size, and their market share has been increasing in recent years. They can be divided into two types: multi-layer chip inductors and wire-wound chip inductors. , wherein the wire-wound chip inductor is wound in a high-density manner and packaged into a chip shape. Wire-wound chip inductors have the advantages of traditional coils and multilayer chip inductors, but their production i...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned use of magnetic glue to make wire-wound chip inductors has poor production efficiency, difficulty in reducing costs, and poor inductance characteristics

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