Inductance element and method for manufacturing same

Abstract

The invention relates to an inductance element which comprises a ferromagnetic core part, an aluminum winding and two copper terminals. The aluminum winding comprises a surrounding section surrounding the ferromagnetic core part for preset circles and extending sections extending downwards from two ends of the surrounding section. The two copper terminals are respectively wrapped on the corresponding extending sections. The two copper terminals are respectively wrapped on the two extending sections of the aluminum winding, and the inductance element is welded on a printed circuit board, so that the effect of being good in conduction effect and reducing cost can be achieved.

Description

technical field [0001] The invention relates to an inductance element, in particular to a wire-wound inductance element. Background technique [0002] A general wire-wound inductance element is mainly composed of a core and a winding wire surrounding the core. Common cores are ferromagnetic materials, but air cores can also be used. The winding is enameled wire, and the enameled wire is usually coated with an insulating varnish layer on the surface of the copper wire. Recently, the material cost of copper has continued to rise, resulting in an increase in the cost of the inductance component. [0003] At present, it has been proposed to use aluminum winding, enameled wire coated with an insulating varnish layer on the surface of the aluminum wire, as the winding of the wire-wound inductance element. However, the winding of the inductance element needs to be overlapped with the PCB (Printed Circuit Board, Printed Circuit Board) through solder. Oxidation in contact with air...

AI Technical Summary

Problems solved by technology

However, the winding of the inductance element needs to be overlapped with the PCB (Printed Circuit Board, Printed Circuit Board) through solder. Oxidation in contact with air forms an oxide layer, which makes it difficult for the solder to completely cover the aluminum wire, resulting in empty soldering, which in turn makes the inductance element and the PCB less conductive

[0004] This shows that the above-mentioned existing wire-wound inductive element obviously still has inconvenience and defects in method, product structure and use, and needs to be further improved urgently.

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