CN115547637A - Inductor with magnetic shielding structure - Google Patents
Inductor with magnetic shielding structure Download PDFInfo
- Publication number
- CN115547637A CN115547637A CN202211270045.1A CN202211270045A CN115547637A CN 115547637 A CN115547637 A CN 115547637A CN 202211270045 A CN202211270045 A CN 202211270045A CN 115547637 A CN115547637 A CN 115547637A
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- China
- Prior art keywords
- winding
- inductor
- magnetic field
- coil
- magnetic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention relates to an inductor with a magnetic shielding structure, which comprises a winding structure, wherein the winding structure comprises a magnetic core and a coil, the coil is wound on the magnetic core in a transverse winding mode, namely the coil is wound in a spiral mode from left to right or from right to left, and a generated magnetic field is in a horizontal direction, so that a vertical magnetic field in a circuit and a horizontal magnetic field generated by the winding of the inductor are in a mutually vertical state, and the electric property of the inductor of a product is not influenced, so that the magnetic shielding structure is formed in the circuit. The invention has the beneficial effects that 1) because of adopting a transverse winding mode, the length and the space of the product can be effectively utilized, and the insufficient winding space is avoided, thereby effectively improving the product performance; 2) Magnetic shielding structures are formed in the circuit.
Description
Technical Field
The invention relates to an inductor, in particular to an inductor with a magnetic shielding structure.
Background
In the traditional power inductor, the bottom surface of an electrode is made into a product, a vertical winding mode is adopted, as shown in figure 1, a product copper wire is finally led to the bottom surface electrode, the electrode is formed by being connected with the copper wire in a tin immersion or electroplating mode, the magnetic field direction of the whole product is in the vertical direction, as shown in figure 2, the product procedures comprise a magnetic core, winding, forming baking/gluing baking, tin immersion/paint stripping post electroplating, appearance testing and packaging, due to the fact that the vertical winding mode is adopted, the coil is in a spiral rising mode, the magnetic field direction is in the vertical direction, and in a circuit used by a client, vertical magnetic field interference exists, so that the characteristics of an inductor product are influenced, and the performance of the whole circuit is influenced.
In many inductance products, the height of the product in a circuit is expected to be as low as possible, so that the number of turns of a coil is limited due to the limitation of the height of the product by adopting upper and lower winding wires, and the loss of the product is increased due to the reduction of the diameter of a copper wire to ensure that the number of turns of the coil can be reduced; some manufacturers use thick wire diameters to meet performance requirements and bring reliability risks.
Disclosure of Invention
In order to solve the problems, the invention achieves the same electrical property level without adding any working procedure and material, changes the magnetic field direction of the product, avoids the influence of the magnetic field in the circuit process on the product performance, and ensures high mass production efficiency, stable quality and excellent product performance.
The invention adjusts the magnetic field direction of the product by changing the product structure into the horizontal or quasi-horizontal direction, so that the magnetic field and the magnetic field in the circuit which influences the product form the vertical direction, and the influence of the magnetic field on the inductance is eliminated; the technical scheme provided by the invention is as follows:
the utility model provides an inductance with magnetic screen structure, the inductance have wire winding structure, wire winding structure including magnetic core and coil, the coil adopt horizontal wire winding mode on the magnetic core, the coil is the spiral mode wire winding from left to right or from right to left, its magnetic field that produces is the horizontal direction, and consequently, the vertical magnetic field in the circuit will be mutually perpendicular state with the horizontal magnetic field that the inductance wire winding produced, consequently does not have the influence to product inductance electrical property to form magnetic screen structure in the circuit.
The winding coil is a copper wire, and the copper wire can be selected from flat wires, round wires, self-adhesive wires and the like.
The beneficial effect of the invention is that,
1) Due to the adoption of a transverse winding mode, the length and the space of the product can be effectively utilized, the insufficient winding space is avoided, and the product performance is effectively improved;
2) Magnetic shielding structures are formed in the circuit.
Drawings
FIG. 1 illustrates a conventional inductor winding approach;
FIG. 2 is a diagram illustrating the magnetic field generated by the coil of a conventional inductor;
FIG. 3 is a winding method of the inductor according to the present invention;
FIG. 4 is a schematic diagram of the inductor after press molding according to the present invention;
FIG. 5 illustrates a transverse winding of the present invention;
fig. 6 is a schematic diagram of the magnetic field generated by the coil of the present invention.
Detailed Description
The present disclosure will be further explained and illustrated with reference to specific embodiments.
An inductor with a magnetic shielding structure can have a winding structure, the winding structure comprises a magnetic core and a coil, the magnetic core is made of one or more of carbonyl iron powder, feSi, alloy powder and nickel zinc ferrite, and the magnetic core can be directly formed by a die or cut into a required size after being formed into an integral shape; the copper wire can be selected from flat wire, round wire, self-adhesive wire, etc.
The coil adopts a transverse winding mode on the magnetic core, as shown in fig. 5, namely the coil is wound in a spiral mode from left to right or from right to left, and the generated magnetic field is in a horizontal direction, as shown in fig. 6, so that the vertical magnetic field in the circuit is perpendicular to the horizontal magnetic field generated by the inductor winding, the electrical property of the inductor of the product is not influenced, and a magnetic shielding structure is formed in the circuit.
The preparation process comprises the following steps:
1) Winding, the winding mode does: winding a copper wire on the magnetic core center pillar, and leading out the copper wire to form an electrode lead, wherein the copper wire can be hung in different shapes or modes, such as direct oblique lines, bent lines and the like, and related hanging line positions can be reserved in an electrode area as shown in fig. 3;
2) Forming and baking, after winding, filling powder/magnetic glue into the die, performing press fit or other forming modes, and simultaneously exposing the electrode, wherein one shape is shown in figure 4, after forming, baking and curing are performed, and the specific temperature is determined according to the material quality of the filled powder or glue;
3) Spraying, namely spraying the alloy or related materials on the surface of a product to be subjected to insulation treatment, wherein the process can be omitted when other materials are not required to be subjected to insulation treatment according to the material requirements;
4) Stripping and forming electrodes: removing the insulating material of the electrode part of the product aiming at the step of the previous procedure; after the insulating layer is removed, electroplating is carried out, which comprises the following steps: cu-Ni-Sn, wherein the first layer is not limited to Cu material, and if the insulating layer is not provided, the electrode can be directly formed;
5) Picking out defective products, ensuring the product quality, testing the products, and packaging after the products are qualified.
Claims (2)
1. The inductor with the magnetic shielding structure is characterized in that the coil is transversely wound on the magnetic core, a magnetic field generated after the coil is electrified is in the horizontal direction, and the magnetic field in the horizontal direction is perpendicular to the magnetic field in an inductive circuit.
2. An inductor with magnetic shielding structure as claimed in claim 1, characterized in that the coil is a flat wire, a round wire or a self-adhesive wire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210805630 | 2022-07-08 | ||
| CN2022108056300 | 2022-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115547637A true CN115547637A (en) | 2022-12-30 |
Family
ID=84735035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211270045.1A Pending CN115547637A (en) | 2022-07-08 | 2022-10-18 | Inductor with magnetic shielding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115547637A (en) |
-
2022
- 2022-10-18 CN CN202211270045.1A patent/CN115547637A/en active Pending
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