Common-mode and differential-mode integrated inductor

Abstract

A common-mode and differential-mode integrated inductor relates to the technical field of integrated inductors and comprises a first magnetic core, a winding, a second magnetic core and a base. The first magnetic core comprises a first magnetic column, a second magnetic column and a window arranged between the first magnetic column and the second magnetic column; the windings penetrate through the window to be wound on the first magnetic column, and the multiple windings are sequentially distributed in the length direction of the first magnetic column; the second magnetic core is arranged between any two adjacent windings, and the second magnetic core is arranged between the first magnetic column and the second magnetic column; the base is arranged on the side, away from the second magnetic column, of the first magnetic column, the base is provided with a supporting column connected with the first magnetic core, and the two ends of the winding are connected with the base in an inserted mode. According to the utility model, a plurality of common-mode inductors and differential-mode inductors are integrated, the size is reduced, the occupied space required by installation is reduced, the structure is simple, the assembly is easy, and the automatic processing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated inductors, in particular to a common-mode and differential-mode integrated inductor. Background Art

[0002] The new energy photovoltaic industry is developing faster and faster, and the requirements for components are getting higher and higher. High current, high power output, high reliability, small volume, etc. have become the development trends in the electronic component industry. A filter circuit includes 4 differential-mode inductors and 4 common-mode inductors, which are respectively used to suppress differential-mode resonance and common-mode interference, and are all independently installed, requiring a large installation space; moreover, the existing production processes of common-mode inductors and differential-mode inductors are complex, with many winding and assembly processes, which is not conducive to automated processing. Summary of the Utility Model

[0003] Aiming at the problems of a large number of common-mode and differential-mode inductors, large volume, and difficulty in automated processing in the prior art solutions, the utility model provides a common-mode and differential-mode integrated inductor.

[0004] The utility model provides the following technical solutions: A common-mode and differential-mode integrated inductor, comprising:

[0005] A first magnetic core, the first magnetic core includes a first magnetic column, a second magnetic column, and a window disposed between the first magnetic column and the second magnetic column;

[0006] A winding, the winding passes through the window and winds around the first magnetic column, and a plurality of the windings are sequentially distributed along the length direction of the first magnetic column;

[0007] A second magnetic core, the second magnetic core is disposed between any two adjacent windings, and the second magnetic core is disposed between the first magnetic column and the second magnetic column;

[0008] A base, the base is disposed on a side of the first magnetic column away from the second magnetic column, the base is provided with a support column connected to the first magnetic core, and both ends of the winding are plugged into the base.

[0009] Preferably, the first magnetic core is in a rectangular frame shape, and the first magnetic column and the second magnetic column are parallel.

[0010] Preferably, the winding is made of flat copper wire.

[0011] Preferably, air gaps are provided between the second magnetic core and the first magnetic column and the second magnetic column respectively.

[0012] Preferably, the width of the second magnetic core is greater than or equal to the width of the winding.

[0013] The beneficial effects of the present utility model are as follows: integrating multiple common-mode inductors and differential-mode inductors into one body reduces the volume, shrinks the occupied space required for installation, and has a simple structure and is easy to assemble, which is conducive to automated processing. Description of the Drawings

[0014] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the integrated inductor.

[0015] Figure 2 It is a front view of an embodiment of the integrated inductor.

[0016] Figure 3 It is a left view of an embodiment of the integrated inductor.

[0017] Reference numerals in the drawings: 10, the first magnetic core; 11, the first magnetic post; 12, the second magnetic post; 13, the window; 20, the winding; 30, the second magnetic core; 40, the base; 41, the support post. Detailed Embodiment

[0018] The following further describes the embodiments of the present utility model in more detail with reference to the drawings and reference numerals, so that those skilled in the art can implement it after studying this specification. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] The present utility model provides a common-mode and differential-mode integrated inductor as shown in Figures 1-3 which includes a first magnetic core 10, a second magnetic core 30, a winding 20 and a base 40.

[0020] Please refer to Figure 1 、 2 , the first magnetic core 10 can be made of a material with high magnetic permeability, low coercivity, and extremely insensitive to mechanical stress. Its shape can be a square shape, and a window 13 penetrating the first magnetic core is provided in the center to form a closed magnetic circuit; the parts of the first magnetic core 10 on both sides of the window 13 are respectively a first magnetic post 11 and a second magnetic post 12, and the first magnetic post and the second magnetic post are parallel. The present utility model does not limit the material and shape of the first magnetic core 10, and appropriate magnetic cores can be selected according to needs in other embodiments.

[0021] A plurality of the windings 20 pass through the window 13 and are wound around the first magnetic post 11, and the plurality of windings 20 are sequentially distributed along the length direction of the first magnetic post 11. Each winding 20 forms a common-mode inductor with the first magnetic core 10. Preferably, the winding 20 is wound with flat copper wire, which has a large cross-sectional area and reduces the winding difficulty.

[0022] Further, a second magnetic core 30 is provided between any two adjacent windings 20, and the second magnetic core 30 is disposed between the first magnetic column 11 and the second magnetic column 12, so that the first magnetic core and the second magnetic core form a closed magnetic circuit, and a differential mode inductor is formed with the corresponding winding. Specifically, the second magnetic core 30 may be a sheet-shaped nickel-zinc magnetic core, and its width L1 is greater than or equal to the width L2 of the winding 20. Please refer to Figure 3 , and its purpose is to increase the differential mode inductance.

[0023] Preferably, air gaps are provided between the second magnetic core 30 and the first magnetic column 11 and the second magnetic column 12 to adjust the inductance, and the air gaps can be filled with ceramic gaskets or potting glue.

[0024] A base 40 made of an insulating material is disposed on the side of the first magnetic column 11 away from the second magnetic column 12. The base 40 is provided with a support column 41 adhesively connected to the first magnetic core 10, forming a space for the winding to pass through. Both ends of the winding 20 are inserted into the base 40, and both ends of the winding 20 protrude from the base 40 to form pins.

[0025] The above are one or more embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A common-mode and differential-mode integrated inductor, characterized in that: include: A first magnetic core, the first magnetic core comprising a first magnetic column, a second magnetic column, and a window disposed between the first magnetic column and the second magnetic column; A winding, wherein the winding passes through the window and is wound around the first magnetic column, and a plurality of the windings are sequentially distributed along the length direction of the first magnetic column; A second magnetic core, wherein the second magnetic core is disposed between any two adjacent windings, and the second magnetic core is disposed between the first magnetic column and the second magnetic column; The base is arranged on a side of the first magnetic column away from the second magnetic column, the base is provided with a support column connected to the first magnetic core, and both ends of the winding are plugged into the base.

2. The common-mode and differential-mode integrated inductor according to claim 1, characterized in that: The first magnetic core is in a square shape, and the first magnetic column and the second magnetic column are parallel.

3. The common-mode and differential-mode integrated inductor according to claim 1, characterized in that: The windings are made of flat copper wire.

4. The common-mode and differential-mode integrated inductor according to claim 1, characterized in that: An air gap is provided between the second magnetic core and the first magnetic column and the second magnetic column.

5. The common-mode and differential-mode integrated inductor according to claim 1, characterized in that: The width of the second magnetic core is greater than or equal to the winding width.

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