CN218568608U - Common-mode inductor for segmented air gap flat wire - Google Patents

Abstract

The utility model relates to the technical field of inductance, a flat line common mode inductance of segmentation air gap is disclosed, include: go up magnet and lower magnet, it is equipped with two first magnetic cores to go up the magnet symmetry, lower magnet symmetry is equipped with two second magnetic cores, be equipped with first air gap baffle on the first magnetic core, be equipped with first magnetic column on the first air gap baffle, be equipped with second air gap baffle on the second magnetic core, be equipped with the second magnetic column on the second air gap baffle, second magnetic column and first magnetic column clearance set up, first magnetic column and second magnetic column have flat coil around having, first coil baffle has been cup jointed on the first magnetic core, second coil baffle has been cup jointed on the second magnetic core. The first magnetic core is provided with the first air gap partition plate, the second magnetic core is provided with the second air gap partition plate, the first magnetic column and the second magnetic column are wound with the flat coil, the number of air gaps is increased through the first air gap partition plate and the second air gap partition plate, loss caused by edge magnetic flux is effectively reduced, stability of the inductor is improved, and working performance of the common mode inductor is improved.

Description

Flat line common mode inductance of segmentation air gap

Technical Field

The utility model relates to the technical field of inductance, especially, relate to a flat line common mode inductance of segmentation air gap.

Background

In the prior art, a common mode inductor is a common mode interference suppression device using ferrite as a magnetic core, and two coils with the same size and the same number of turns are symmetrically wound on the same ferrite annular magnetic core to form a four-terminal device. However, the conventional common mode inductor has a small number of air gaps, which results in increased magnetic flux loss and affects the working performance of the common mode inductor.

Therefore, how to provide a segmented air gap flat wire common mode inductor to improve the working performance of the common mode inductor becomes an urgent technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in how to provide a flat line common mode inductance of segmentation air gap to promote common mode inductance's working property.

Therefore, according to the first aspect, the embodiment of the utility model discloses a flat line common mode inductance of segmentation air gap includes: the upper magnetic body and the lower magnetic body are connected with each other, the upper magnetic body is symmetrically provided with two first magnetic cores, the lower magnetic body is symmetrically provided with two second magnetic cores, a first air gap partition plate is arranged on each first magnetic core, a first magnetic column is arranged on each first air gap partition plate, a second air gap partition plate is arranged on each second magnetic core, a second magnetic column is arranged on each second air gap partition plate, the second magnetic column is arranged in a gap with the first magnetic column, the first magnetic column and the second magnetic column are wound with flat coils, a first coil partition plate is sleeved on each first magnetic core, and a second coil partition plate is sleeved on each second magnetic core.

The utility model discloses further set up to, the bottom of lower magnet is equipped with the bottom plate.

The utility model discloses further set up to, be equipped with the jack on the bottom plate, flat coil's pin passes the jack.

The utility model discloses further set up to, the bottom plate is FR4 epoxy insulation board.

The utility model discloses further set up to, it is equipped with two first concave cambered surfaces to go up the symmetry on the magnet, the symmetry is equipped with two second concave cambered surfaces on the magnet down.

The utility model discloses further set up to, go up the magnet with the magnet all is the setting of T type down.

The utility model discloses further set up to, first coil baffle with it is fixed to go up the magnet bonding, second coil baffle with the magnet bonding is fixed down.

The utility model discloses further set up as, first air gap baffle with second air gap baffle is the FR4 epoxy board.

The utility model discloses following beneficial effect has: through being equipped with first air gap baffle on the first magnetic core, be equipped with second air gap baffle on the second magnetic core, first magnetic column and second magnetic column have flat coil around the system, and then have provided a segmentation air gap flat line common mode inductance, have increased the quantity of air gap through first air gap baffle and second air gap baffle, the effectual loss that reduces marginal magnetic flux and bring has improved the stability of inductor to common mode inductance's working property has been promoted.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a common mode inductor with a segmented air gap flat wire according to the present embodiment;

fig. 2 is a schematic diagram of a partial structure of a common mode inductor of a segmented air gap flatwire according to the present embodiment;

fig. 3 is an exploded view of a common mode inductor of a segmented air gap flatwire according to the present embodiment.

Reference numerals are as follows: 1. an upper magnet; 11. a first magnetic core; 12. a first concave arc surface; 2. a lower magnet; 21. a second magnetic core; 22. a second concave arc surface; 3. a first air gap barrier; 4. a first magnetic pillar; 5. a second air gap spacer; 6. a second magnetic pillar; 7. a first coil separator; 8. a second coil separator; 9. a base plate; 91. a jack; 10. a flat coil; 101. and (6) a pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The embodiment of the utility model discloses flat line common mode inductance of segmentation air gap, as shown in fig. 1-3, include: the last magnet 1 and lower magnet 2 of interconnect, it is equipped with two first magnetic cores 11 to go up 1 symmetry of magnet, 2 symmetries of magnet are equipped with two second magnetic cores 21 down, be equipped with first air gap baffle 3 on the first magnetic core 11, be equipped with first magnetic column 4 on the first air gap baffle 3, be equipped with second air gap baffle 5 on the second magnetic core 21, be equipped with second magnetic column 6 on the second air gap baffle 5, second magnetic column 6 sets up with first magnetic column 4 clearance, first magnetic column 4 and second magnetic column 6 are around having flat coil 10, first magnetic core 11 is gone up to have cup jointed first coil baffle 7, second magnetic core 21 is gone up to have cup jointed second coil baffle 8.

It should be noted that, the first air gap partition plate 3 is arranged on the first magnetic core 11, the second air gap partition plate 5 is arranged on the second magnetic core 21, and the flat coil 10 is wound on the first magnetic column 4 and the second magnetic column 6, so that the common mode inductance of the segmented air gap flat wire is provided.

It should be further noted that the common mode inductor with the segmented air gap flat wire disclosed by the application has low magnetic loss and strong electromagnetic interference (EMI) resistance to suppress large current; in addition, compared with a round wire, when the flat coil 10 is used, the flat coil 10 has the characteristics of light weight, low resistance, high efficiency and low noise under the same volume, and has a flat wire winding with small volume and large current, so that extremely low direct current resistance is realized, and excellent temperature rise current and saturation current are still kept under high-frequency and high-temperature environments.

As shown in fig. 2 and 3, the bottom of the lower magnet 2 is provided with a bottom plate 9.

As shown in fig. 2 and 3, the bottom plate 9 is provided with insertion holes 91, and the leads 101 of the flat coil 10 pass through the insertion holes 91. In the specific implementation process, the flat coil 10 is made of a polyimide enameled flat copper wire, the enameled wire is required to be wide and flat to be vertically wound, so that each wire can dissipate heat, and the flat coil has the advantages of high groove filling rate, small product volume, high power and the like.

As shown in fig. 2 and 3, the base plate 9 is an FR4 epoxy insulating plate. It should be noted that the bottom plate 9 has high temperature resistance and insulation performance.

As shown in fig. 1-3, the upper magnet 1 is symmetrically provided with two first concave arc surfaces 12, and the lower magnet 2 is symmetrically provided with two second concave arc surfaces 22. It should be noted that, by the arrangement of the first concave arc surface 12 and the second concave arc surface 22, the flat coil 10 is conveniently wound, and because there are gaps between the flat coil 10 and the first concave arc surface 12 and the second concave arc surface 22, the flat coil 10 is convenient to dissipate heat.

As shown in fig. 1 to 3, the upper magnet 1 and the lower magnet 2 are both T-shaped.

As shown in fig. 2 and 3, the first coil spacer 7 is bonded and fixed to the upper magnet 1, and the second coil spacer 8 is bonded and fixed to the lower magnet 2.

As shown in fig. 2 and 3, the first air gap spacer 3 and the second air gap spacer 5 are both FR4 epoxy plates.

The common-mode inductor is a common-mode interference suppression device using ferrite as a magnetic core, and two coils with the same size and the same number of turns are symmetrically wound on the same ferrite annular magnetic core to form a four-terminal device; the principle is that when a common mode current flows, magnetic fluxes are superposed with each other, so that the magnetic fluxes have a considerable inductance and play a role in inhibiting the common mode current, and when a differential mode current flows through the two coils, the magnetic fluxes are cancelled with each other, so that almost no inductance exists, and the differential mode current can pass through without attenuation. Therefore, the common-mode inductor can effectively restrain common-mode interference signals in a balanced line, and differential-mode signals normally transmitted by the line are not affected.

The working principle is as follows: through being equipped with first air gap baffle 3 on the first magnetic core 11, be equipped with second air gap baffle 5 on the second magnetic core 21, flat coil 10 has been made in the winding of first magnetic column 4 and second magnetic column 6, and then has provided a segmentation air gap flat line common mode inductance, has increased the quantity of air gap through first air gap baffle 3 and second air gap baffle 5, and the effectual loss that reduces marginal magnetic flux and bring has improved the stability of inductor to common mode inductance's working property has been promoted.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (8)

1. A segmented air gap flat wire common mode inductor, comprising: interconnect's last magnet (1) and lower magnet (2), it is equipped with two first magnetic cores (11) to go up magnet (1) symmetry, magnet (2) symmetry is equipped with two second magnetic cores (21) down, be equipped with first air gap baffle (3) on first magnetic core (11), be equipped with first magnetic column (4) on first air gap baffle (3), be equipped with second air gap baffle (5) on second magnetic core (21), be equipped with second magnetic column (6) on second air gap baffle (5), second magnetic column (6) with first magnetic column (4) clearance sets up, first magnetic column (4) with second magnetic column (6) have flat coil (10) around the system, first magnetic core (11) are gone up to cup joint first coil baffle (7), second magnetic core (21) are gone up to cup joint second coil baffle (8).

2. The common mode inductor with segmented air gap and flat wires according to claim 1 is characterized in that the bottom of the lower magnet (2) is provided with a bottom plate (9).

3. The segmented air-gap flat-wire common-mode inductor according to claim 2, characterized in that a jack (91) is provided on the base plate (9), and the pin (101) of the flat coil (10) passes through the jack (91).

4. The segmented air gap flat wire common mode inductor according to claim 2 or 3, characterized in that the bottom plate (9) is an FR4 epoxy insulation plate.

5. The common-mode inductor with segmented air gaps and flat wires as claimed in claim 1, is characterized in that two first concave arc surfaces (12) are symmetrically arranged on the upper magnet (1), and two second concave arc surfaces (22) are symmetrically arranged on the lower magnet (2).

6. The segmented air-gap flat wire common mode inductor according to claim 1 or 5, characterized in that the upper magnet (1) and the lower magnet (2) are arranged in a T shape.

7. The segmented air gap flat wire common mode inductor according to claim 1, characterized in that the first coil spacer (7) is adhesively fixed with the upper magnet (1) and the second coil spacer (8) is adhesively fixed with the lower magnet (2).

8. The segmented air gap flatwire common mode inductor of claim 1 or 7, characterized in that the first air gap spacer (3) and the second air gap spacer (5) are both FR4 epoxy boards.

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