CN219892014U - Common mode inductance and power supply circuit - Google Patents

Abstract

The utility model discloses a common-mode inductor and a power supply circuit, wherein the common-mode inductor comprises a nanocrystalline magnetic core and two inductance coils, the nanocrystalline magnetic core comprises two first magnetic columns and two second magnetic columns which are oppositely arranged, the length of each first magnetic column is greater than that of each second magnetic column, and the first magnetic columns and the second magnetic columns are connected through arc chamfers; the two inductance coils are wound on the two first magnetic columns respectively, and the winding directions of the two inductance coils are the same. The utility model saves the assembly process, has smaller gap between the inductance coil and the nanocrystalline magnetic core, reduces the overall peripheral size and the consumption of winding wires, and is simpler and more convenient to assemble.

Description

Common mode inductance and power supply circuit

Technical Field

The utility model relates to the technical field of inductors, in particular to a common mode inductor and a power supply circuit.

Background

The current inductor comprises racetrack type inductors, annular inductors and the like, and the current racetrack type inductors are usually formed by winding coils first and then assembling the coils, so that the shape of the coils is approximate to a square shape; or directly winding the magnetic core to form a coil into a circular shape; the loop type inductor is assembled by adopting a wire hooking mode or directly winding on the magnetic core; or firstly winding a square coil, then cutting the magnetic core, and then assembling, so that the gap between the coil and the magnetic core is larger, the overall peripheral size is larger, the winding wire is more, and the assembly is more complicated.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present utility model is to propose a common-mode inductance comprising:

the nanocrystalline magnetic core comprises two first magnetic columns and two second magnetic columns which are oppositely arranged, the length of each first magnetic column is larger than that of each second magnetic column, and the first magnetic columns and the second magnetic columns are connected through arc-shaped chamfers;

the two inductance coils are wound on the two first magnetic columns respectively, and the winding directions of the two inductance coils are the same.

Preferably, the section of the nanocrystalline magnetic core is circular.

Preferably, the inductance coil is a flat wire and is vertically wound on the first magnetic pillar.

Preferably, the inductance coil comprises a winding part and two connecting parts, the two connecting parts are respectively connected with two ends of the winding part, the winding part is wound on the first magnetic column, and the two connecting parts are respectively welded on the circuit board.

Preferably, the nanocrystalline core is an integral core.

Preferably, the diameter of the nanocrystalline magnetic core is 10mm-21mm.

Preferably, the nanocrystalline core is an iron-based nanocrystalline core.

Another object of the present utility model is to provide a power supply circuit including the common mode inductor.

The scheme of the utility model at least comprises the following beneficial effects:

according to the common-mode inductor provided by the utility model, the integrated nanocrystalline magnetic core is adopted, so that two inductance coils can be directly wound on the nanocrystalline magnetic core in the assembly process, the assembly process is saved, the gap between the inductance coils and the nanocrystalline magnetic core is smaller, the overall peripheral size and the consumption of winding wires are reduced, and the assembly is simpler and more convenient.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a common mode inductor provided in an embodiment of the present utility model;

fig. 2 is a structural exploded view of a common mode inductor provided in an embodiment of the present utility model;

fig. 3 is a cross-sectional view of a common mode inductance provided in an embodiment of the present utility model;

reference numerals illustrate:

10. a nanocrystalline magnetic core; 11. a first magnetic pillar; 12. a second magnetic pillar; 20. an inductance coil; 21. a winding part; 22. and a connecting part.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The common mode inductor and the power supply circuit according to the embodiment of the present utility model are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, the common-mode inductor provided in the embodiment of the utility model includes a nanocrystalline magnetic core 10 and two inductance coils 20, where the nanocrystalline magnetic core 10 includes two first magnetic columns 11 and two second magnetic columns 12 that are oppositely disposed, the length of the first magnetic column 11 is greater than that of the second magnetic column 12, and arc chamfer connection is formed between the first magnetic column 11 and the second magnetic column 12; the two inductance coils 20 are wound on the two first magnetic columns 11 respectively, and the winding directions of the two inductance coils 20 are the same.

Wherein the section of the nanocrystalline magnetic core 10 is circular; in the assembly process, compared with the traditional CD-type magnetic core which needs to wind a coil first and then assemble, the utility model can directly wind the inductance coil 20 on the magnetic core, thereby saving the assembly process; the section of the traditional runway-shaped magnetic core is rectangular, and the section of the nanocrystalline magnetic core 10 is circular, so that the inductance coil 20 is more close to the nanocrystalline magnetic core 10, the consumption of wires can be further reduced, the peripheral size of the coil can be further reduced, and further, the space can be saved when the nanocrystalline magnetic core is applied to various electronic circuits, and the nanocrystalline magnetic core is more convenient to use; it can be understood that the nanocrystalline magnetic core 10 formed by the two first magnetic columns 11 and the two second magnetic columns 12 may be a racetrack magnetic core, so that the two inductance coils 20 may be wound on the first magnetic columns 11 respectively, and the inductance coils 20 and the nanocrystalline magnetic core 10 may be more tightly attached.

According to the common-mode inductor provided by the utility model, the integrated nanocrystalline magnetic core 10 is adopted, so that two inductance coils 20 can be directly wound on the nanocrystalline magnetic core 10 in the assembly process, the assembly process is saved, the gap between the inductance coils 20 and the nanocrystalline magnetic core 10 is smaller, the overall peripheral size and the consumption of winding wires are reduced, and the assembly is simpler and more convenient.

Referring to fig. 3, the inductor 20 is a flat wire and is wound on the first magnetic pillar 11.

In this embodiment, the inductance coil 20 may be a flat wire, a round wire, or the like, and when the inductance coil 20 is assembled by using the flat wire, the inductance coil 20 is made to be more closely attached to the nanocrystalline magnetic core 10, so as to save the amount of winding wires, reduce the peripheral size of the coil, and save space; when the round wire is adopted for assembly, an R-shaped winding machine can be adopted for winding the coil, so that the winding efficiency is improved.

Further, the inductance coil 20 includes a winding portion 21 and two connection portions 22, the two connection portions 22 are respectively connected to two ends of the winding portion 21, the winding portion 21 is wound on the first magnetic pillar 11, and the two connection portions 22 are respectively welded on the circuit board.

In this embodiment, the winding directions of the winding portions 21 corresponding to the two inductance coils 20 are the same, and the connection portion 22 of each inductance coil 20 is welded on the circuit board, so that electrical communication between the common-mode inductance and the circuit board can be realized, and the installation is more convenient and simple.

In an alternative embodiment, nanocrystalline core 10 may have a diameter of 10mm-21mm. The diameter of the nanocrystalline magnetic core 10 may be selected according to actual requirements, and in different application scenarios, the nanocrystalline magnetic core 10 may also have different sizes, for example, the diameter of the nanocrystalline magnetic core 10 is set to 12mm, and the nanocrystalline magnetic core may be applied to various circuits such as a power supply circuit; alternatively, the nanocrystalline core 10 is an iron-based nanocrystalline core 10; the material of the nanocrystalline magnetic core 10 can be selected according to actual requirements, when the iron-based nanocrystalline magnetic core 10 is adopted, compared with a traditional ferrite magnetic core, the iron-based nanocrystalline magnetic material has good magnetic permeability, so that the common mode performance of the common mode inductance is effectively improved, and it can be understood that the material of the nanocrystalline magnetic core 10 can also be other materials.

The power supply circuit provided by the embodiment of the utility model comprises the common mode inductor. The common-mode inductor can be adopted by the power circuit, and by adopting the integrated nanocrystalline magnetic core 10, in the assembling process, the two inductance coils 20 can be directly wound on the nanocrystalline magnetic core 10, so that the assembling procedure is saved, the gap between the inductance coils 20 and the nanocrystalline magnetic core 10 is smaller, the overall peripheral size and the consumption of winding wires are reduced, the space can be saved when the common-mode inductor is used in the power circuit, and the use is more convenient.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (6)

1. A common mode inductor, comprising:

the nanocrystalline magnetic core comprises two first magnetic columns and two second magnetic columns which are oppositely arranged, the length of each first magnetic column is larger than that of each second magnetic column, and the first magnetic columns and the second magnetic columns are connected through arc-shaped chamfers;

the two inductance coils are wound on the two first magnetic columns respectively, and the winding directions of the two inductance coils are the same;

the section of the nanocrystalline magnetic core is circular, and the nanocrystalline magnetic core is an integrated magnetic core.

2. The common mode inductor of claim 1, wherein the inductor winding is a flat wire and is wound immediately upon the first leg.

3. The common mode inductor of claim 1, wherein the inductor comprises a winding portion and two connecting portions, the two connecting portions are respectively connected with two ends of the winding portion, the winding portion is wound on the first magnetic pillar, and the two connecting portions are respectively welded on the circuit board.

4. The common mode inductance of claim 1, wherein said nanocrystalline core has a diameter of 10mm-21mm.

5. The common-mode inductance of claim 1, wherein said nanocrystalline core is an iron-based nanocrystalline core.

6. A power supply circuit comprising a common mode inductance as claimed in any one of claims 1 to 5.