CN220672358U

CN220672358U - Miniaturized differential-common mode integrated inductor

Info

Publication number: CN220672358U
Application number: CN202322233999.1U
Authority: CN
Inventors: 薛超
Original assignee: Kunshan Avo Motor Co ltd
Current assignee: Kunshan Avo Motor Co ltd
Priority date: 2023-08-19
Filing date: 2023-08-19
Publication date: 2024-03-26
Anticipated expiration: 2033-08-19

Abstract

The utility model provides a miniaturized differential-common-mode integrated inductor, which comprises a fixed plate, an external coil I, an external coil II, an annular tube I, an annular tube II, an annular iron core I, an annular iron core II, an internal coil I, an internal coil II, a connecting block I and a connecting block II.

Description

Miniaturized differential-common mode integrated inductor

Technical Field

The utility model relates to the technical field of electronic elements, in particular to a miniaturized differential-common mode integrated inductor.

Background

Because of the demands of people for work and life, the demands for power electronic equipment are also increasing. However, almost all power supply circuits generate common-mode and differential-mode electromagnetic interference signals, and the common-mode filter inductance and the differential-mode filter inductance are commonly connected to the power supply circuits to reduce or suppress the common-mode and differential-mode interference signals, so that the power supply circuits meet the requirement of electromagnetic compatibility.

The existing inductor has larger volume, higher loss in the using process and more electric energy loss, and in order to save energy and reduce the energy loss of electronic products, a miniaturized inductor is needed, and therefore, a miniaturized differential-common mode integrated inductor is provided.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a miniaturized differential-common-mode integrated inductor, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.

The technical scheme of the embodiment of the utility model is realized as follows: the utility model provides a miniaturized differential-common mode integrative inductance, includes fixed plate, outside coil one, outside coil two, ring pipe one, ring pipe two, ring core one, ring core two, inside coil one, inside coil two, connecting block one and connecting block two, outside coil one and outside coil two winding set up on ring pipe one, ring pipe one and ring pipe two link together, ring core one and ring core two link together and set up in ring pipe one and ring pipe two are inside, inside coil one and inside coil two winding set up on ring core two, connecting block one and connecting block two fixed connection are on ring core two, connecting block one and connecting block two other end are connected on ring pipe one's inner wall.

Further preferably, the first external coil and the second external coil are copper wires, the first external coil and the second external coil are wound on the first annular tube, the fixing plate is arranged on one side of the first annular tube and is in contact with the first external coil and the second external coil, and the fixing plate is a plastic plate.

Further preferably, the first annular tube and the second annular tube are welded together, and the first annular tube and the second annular tube are copper metal tubes and are provided with rubber insulation layers on the inner sides.

Further preferably, the annular iron core I and the annular iron core II are cylindrical columns, and the annular iron core I and the annular iron core II are fixedly welded together.

Further preferably, the first inner coil and the second inner coil are respectively wound on the second annular iron core, and the first inner coil and the second inner coil are copper wires.

Further preferably, the first connecting block and the second connecting block are fixed on the annular iron core II, and the first connecting block and the second connecting block are metal blocks and are in contact with the annular pipe I.

Further preferably, a certain gap is left between the first inner coil and the second inner coil and the first annular tube.

Further preferably, the first inner coil and the second inner coil are respectively connected with the first connecting block and the second connecting block, and insulating rubber layers are arranged on the outer sides of the first annular iron core and the second annular iron core.

By adopting the technical scheme, the embodiment of the utility model has the following advantages:

1. according to the utility model, the internal coil and the external coil are arranged, the internal coil is wound on the annular iron core, and the external coil is wound on the annular pipe, so that the internal common-mode filter inductor and the external differential-mode filter inductor are formed, leakage inductance of the common-mode inductor is increased through arranging the connecting block, noise of the differential-mode inductor can be restrained, the common-mode inductor is arranged at the inner side of the differential-mode inductor, the two inductors are integrally designed, the effect of the differential-mode inductor can be realized while the effect of the common-mode inductor is realized, and the differential-mode filter inductor has the advantages of small volume and low loss, and can effectively reduce energy loss.

The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.

Drawings

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

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a top cross-sectional view of the structure of FIG. 1 of the present utility model;

FIG. 3 is an overall cross-sectional block diagram of the present utility model;

fig. 4 is a left side cross-sectional view of the structure of fig. 1 of the present utility model.

Reference numerals: 1. a fixing plate; 2. an external coil I; 3. an external coil II; 4. an annular tube I; 5. a second annular tube; 6. annular iron core I; 7. annular iron core II; 8. an internal coil I; 9. an internal coil II; 10. a first connecting block; 11. and a second connecting block.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 4, the embodiment of the utility model provides a miniaturized differential-common mode integrated inductor, which comprises a fixed plate 1, an external coil 3, a ring tube 4, a ring tube 5, a ring iron core 6, a ring iron core 7, an internal coil 8, an internal coil 9, a connecting block 10 and a connecting block 11, wherein the external coil 2 and the external coil 3 are wound on the ring tube 4, the ring tube 4 and the ring tube 5 are connected together, the ring iron core 6 and the ring iron core 7 are connected together and are arranged in the ring tube 4 and the ring tube 5, the internal coil 8 and the internal coil 9 are wound on the ring iron core 7, the connecting block 10 and the connecting block 11 are fixedly connected on the ring iron core 7, and the other ends of the connecting block 10 and the connecting block 11 are connected on the inner wall of the ring tube 4.

In some embodiments, the first external coil 2 and the second external coil 3 are copper wires, the first external coil 2 and the second external coil 3 are wound on the first annular tube 4, the fixing plate 1 is arranged on one side of the first annular tube 4 and is in contact with the first external coil 2 and the second external coil 3, the fixing plate 1 is a plastic plate, the fixing plate 1 plays a role in driving and fixing the device, and the first external coil 2, the second external coil 3, the first annular tube 4 and the second annular tube 5 form a differential mode filter inductor.

In some embodiments, the annular tube I4 and the annular tube II 5 are welded together, the annular tube I4 and the annular tube II 5 are copper metal tubes and are provided with rubber insulation layers on the inner sides, the annular iron core I6 and the annular iron core II 7 can be arranged on the inner sides, the inner coil I8 and the inner coil II 9 are wound on the outer sides of the annular iron core II 7, and the rubber insulation layers can enable the two inductors not to influence normal operation.

In some embodiments, the first toroidal core 6 and the second toroidal core 7 are cylindrical columns, and the first toroidal core 6 and the second toroidal core 7 are fixedly welded together, so that the first toroidal core 6 and the second toroidal core 7 are connected together.

In some embodiments, the first internal coil 8 and the second internal coil 9 are respectively wound on the second toroidal core 7, and the first internal coil 8 and the second internal coil 9 are both copper wires, so as to form a common mode filter inductor.

In some embodiments, the first connection block 10 and the second connection block 11 are fixed on the second annular iron core 7, the first connection block 10 and the second connection block 11 are metal blocks and are in contact with the first annular pipe 4, and the first connection block 10 and the second connection block 11 connect the internal common-mode filter inductor and the external differential-mode filter inductor together, so that leakage inductance of the common-mode inductor counteracts noise generated by the differential-mode inductor.

In some embodiments, a certain gap is left between the inner coil 8 and the inner coil 9 and the annular tube 4.

In some embodiments, the first inner coil 8 and the second inner coil 9 are respectively connected with the first connecting block 10 and the second connecting block 11, and insulating rubber layers are arranged on the outer sides of the annular iron cores 6 and 7.

The utility model works when in work: firstly, an inner coil I8 and an inner coil II 9 are wound on an annular iron core II 7, the annular iron core II 7 and the annular iron core I6 are welded together, the annular iron core I6 and the annular iron core II 7 are placed inside an annular pipe I4, then the annular pipe I4 and an annular pipe II 5 are welded together, an outer coil I2 and an outer coil II 3 are wound on the outer side of the annular pipe I4, then the device is fixed on a fixed plate 1, an insulating rubber layer is arranged on the inner sides of the annular pipe I4 and the annular pipe II 5 to separate two inductors, and the common mode interference signal and the differential mode interference signal are restrained through the combined action of an inner common mode filtering inductor and an outer differential mode filtering inductor.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A miniaturized differential-common mode integrated inductor is characterized in that: including fixed plate (1), outside coil (2), outside coil (3), ring pipe (4), ring pipe (5), ring core (6), ring core (7), inside coil (8), inside coil (9), connecting block (10) and connecting block (11), outside coil (2) and outside coil (3) winding set up on ring pipe (4), ring pipe (4) are in the same place with ring pipe (5) connection, ring core (6) are in the same place with ring core (7) and set up inside ring pipe (4) and ring pipe (5), inside coil (8) and inside coil (9) winding set up on ring core (7), connecting block (10) and connecting block (11) fixed connection are on ring core (7), connecting block (10) and connecting block (11) other end are connected on the inner wall of ring pipe (4).

2. A miniaturized differential-common-mode integrated inductor according to claim 1, characterized in that: the external coil I (2) and the external coil II (3) are copper leads, the fixing plate (1) is arranged on one side of the annular tube I (4) and is in contact with the external coil I (2) and the external coil II (3), and the fixing plate (1) is a plastic plate.

3. A miniaturized differential-common-mode integrated inductor according to claim 1, characterized in that: the annular tube I (4) and the annular tube II (5) are welded together, and the annular tube I (4) and the annular tube II (5) are copper metal tubes and are provided with rubber insulation layers on the inner sides.

4. A miniaturized differential-common-mode integrated inductor according to claim 1, characterized in that: the annular iron core I (6) and the annular iron core II (7) are cylindrical columns, and the annular iron core I (6) and the annular iron core II (7) are fixedly welded together.

5. A miniaturized differential-common-mode integrated inductor according to claim 1, characterized in that: the first inner coil (8) and the second inner coil (9) are respectively wound on the annular iron core II (7), and the first inner coil (8) and the second inner coil (9) are both copper wires.

6. A miniaturized differential-common-mode integrated inductor according to claim 1, characterized in that: the first connecting block (10) and the second connecting block (11) are fixed on the annular iron core II (7), and the first connecting block (10) and the second connecting block (11) are metal blocks and are in contact with the annular pipe I (4).

7. A miniaturized differential-common-mode integrated inductor according to claim 5, characterized in that: and a certain gap is reserved between the first inner coil (8) and the second inner coil (9) and the first annular tube (4).

8. The miniaturized differential-common-mode integrated inductor of claim 6, wherein: the inner coil I (8) and the inner coil II (9) are respectively connected with the connecting block I (10) and the connecting block II (11), and insulating rubber layers are arranged on the outer sides of the annular iron core I (6) and the annular iron core II (7).