Cylindrical inductor precursor and preparation method and application thereof

Abstract

The invention provides a cylindrical inductor precursor and a preparation method and application thereof.The cylindrical inductor is prepared from the cylindrical inductor precursor, the cylindrical inductor precursor comprises a cylindrical magnetic core and a coil arranged in the cylindrical magnetic core, two grooves are formed in the surface of one side of the cylindrical magnetic core, and the cylindrical magnetic core is arranged in the cylindrical magnetic core. The surface of the other side of the coil is provided with a convex surface, and the two terminals of the coil are pulled to the two sides of the convex surface through the two grooves respectively. The coil is arranged in the cylindrical magnetic core, the cylindrical inductor precursor is obtained by limiting the coil through the side wall of the cylindrical magnetic core and the two grooves, large structural strength is not needed, the characteristics of formed powder are better, the performance of materials is greatly exerted, and the cost of the materials is saved; the cylindrical inductor prepared by adopting the cylindrical inductor precursor has the advantages of higher inductance value, lower direct-current resistance, higher saturation current, high characteristics and easiness in industrial production.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, and relates to a cylindrical inductor precursor and its preparation method and application. Background technique [0002] Inductor is a basic component of electronic circuit, which has a wide range of applications in electronic circuit. In AC circuits, inductors can block the passage of AC, while in DC circuits, except for the DC resistance of the coil itself, it has no effect on DC; therefore, inductors have the functions of blocking current, stepping down and cross-linking coupling, etc. Widely used in medical, vehicle, aerospace and other fields. [0003] At present, there are many types of inductance components on the market, which are classified according to the manufacturing method: one is molded inductors, and the other is integrally formed T-core inductors. The existing one-piece molded inductors on the market need to weld the wound coils on the conductor electrodes first, ...

AI Technical Summary

Problems solved by technology

CN108648901A provides an integrally formed inductor, which adopts the T-core process. This patent first suppresses the T-core, then winds the wire on the T-core middle column, and processes it through molding and other general processes to obtain an integrally formed T-core inductor. ; Although this patent adopts the T-core process, the coil is wound on the T-core center column. Because of the protection of the T-core during hot pressing, the deformation of the coil will be small, but the T-core requires a high strength (subsequent to Winding on T-core) and accuracy, especially as the size of the product becomes smaller, the requirements for equipment accuracy and powder characteristics (such as sphericity, fluidity, etc.) will be very high, which is not suitable for the production of smaller size inductors , which limits its further application

[0005] In summary, molded inductors and integrally formed T-core inductors are usually used in the prior art. The process of molded inductors is relatively simple, but the coil deformation is large, the product characteristics are poor, and the quality cannot be guaranteed. High dependence, high investment and unable to meet the requirements of smaller size products

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