Magnetic passive element and manufacturing method thereof

Abstract

The invention provides a magnetic passive element and a manufacturing method thereof. The magnetic passive element comprises a magnetic core and a metal wire layer twined and covered at the outer surface of the magnetic core; an insulating layer is arranged between the magnetic core and the metal wire layer, and the insulating layer is an insulating material layer including metal ions and is tightly covered on the outer surface of the magnetic core; the insulating layer is provided with one or a plurality of communicated metal ion guide paths covered at the outer surface of the insulating layer, wherein the metal ion guide paths are spiral and can form one or a plurality of electrical loops. The manufacturing method of the magnetic passive element comprises the following steps of setting the magnetic core; directly molding the insulating material layer including the metal ions on the magnetic core by using a die; molding the spiral metal ion guide paths on the surface of the insulating layer; depositing the metal wire layer on the surfaces of the metal ion guide paths to finally form the metal winding on the surface of the magnetic core. The magnetic passive element and the manufacturing method thereof provided by the invention have the advantages of simple process, low production cost and capability of realizing the automatic production with the stable and reliable quality.

Description

technical field [0001] The invention relates to a magnetic passive element and a manufacturing method thereof, in particular to a magnetic passive element and a manufacturing method thereof with a simple process that can realize automatic production. Background technique [0002] The magnetic passive components in the prior art usually use flat enameled wires to surround them into a certain shape, and then assemble them with a magnetic material core of a certain shape to form one or more electrical loops; or wire 10 (which can be a single wire or more than two Stranded wire) is directly wound around the magnetic material 20 to form one or more electrical loops, and the end of the wire 10 is connected to the corner tail 30, see figure 1 , figure 1 It is a structural schematic diagram of a magnetic passive element in the prior art. The disadvantage of this magnetic passive element is manual winding, high cost of human resources, and low efficiency. The patent publication num...

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Problems solved by technology

[0002] The magnetic passive components in the prior art usually use flat enameled wires to surround them into a certain shape, and then assemble them with a magnetic material core of a certain shape to form one or more electrical loops; or wire 10 (which can be a single wire or more than two Stranded wire) is directly wound around the magnetic material 20 to form one or more electrical loops, and the end of the wire 10 is connected to the corner tail 30, see figure 1 , figure 1 It is a schematic diagram of the structure of a magnetic passive component in the prior art. The disadvantage of this magnetic passive component is manual winding, high cost of human resources, and low efficiency.

The patent publication number is US2011 / 0108317, and the US patent application titled "PACKAGED STRUCTURE HAVING MAGNETIC COMPONENT AND METHOD THEREOF" discloses a magnetic passive component. The way of wiring forms one or more electrical loops around the magnetic material core. This kind of magnetic passive component manufacturing method is easy to cause the inductance value to drop, and the cost is relatively high for making larger inductors.

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