Inductor and compression molding method thereof

Abstract

The invention provides an inductor and a compression molding method thereof, and the method comprises the following steps: placing an inductance coil in a mold, then adding magnetic powder to fill the interior and the outer side of the inductance coil, and carrying out compression molding in the mold to obtain a molded part; and curing the molded part, and performing insulation treatment to obtain the inductor. According to the method, the inductor is prepared in a one-time pressing forming mode, the magnetic core of the inductance coil and the outer side forming part are integrally formed to form a whole, the problem that the structure of the inductance coil is unstable is solved, and it is guaranteed that the strength of the inductor is high, and the performance of the inductor is excellent; according to the method, the preparation process of the inductor is simplified, the magnetic core and the outer side forming part do not need to be pressed in batches, the space utilization rate is high when the coil of the inductor is wound, and miniaturization development of the inductor is facilitated.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, and relates to an inductor and a pressing molding method thereof. Background technique [0002] Inductors, also known as inductance coils, can convert electrical energy into magnetic energy and store them. They are one of the basic components of electronic circuits and are widely used in electronic circuits. The structure of the inductor is similar to that of a transformer, but it has only one winding, which has a certain inductance and only hinders the change of the current. Therefore, the inductor plays the role of resistance, step-down, cross-link coupling and load in the AC circuit. [0003] As the size of electronic components becomes smaller and smaller, inductors are also developing towards miniaturization, and it is also required to improve the space utilization of inductors. The early inductors were mainly wire-wound inductors, whose structure was to wind the enameled wire ...

AI Technical Summary

Problems solved by technology

[0005] CN 101377975A discloses an integrated inductor and its manufacturing method. The inductor includes a pressed metal magnetic powder block and an inductance coil. The inductance coil includes a coil body and two terminals. The coil body is made of metal enameled wire. Embedded in the metal magnetic powder block, the terminals are located on both sides of the metal magnetic powder block, the coil body is a two-way helical structure, and the manufacturing method includes winding the inductance coil first, and the two terminals of the inductance coil are welded on the electrode frame, and the metal When the magnetic powder and the inductor coil are mixed and pressed, the metal magnetic powder is wrapped on the outside of the coil, and the use of the magnetic core inside the coil is not mentioned. It also needs to be formed by pressing first. The process is more complicated and requires two steps to complete, and it is impossible to form a complete integrated inductor.