CN220821249U

CN220821249U - Novel patch type transformer

Info

Publication number: CN220821249U
Application number: CN202322529909.3U
Authority: CN
Inventors: 朱杰
Original assignee: Zhongshan Watt Intelligent Technology Co ltd
Current assignee: Zhongshan Watt Intelligent Technology Co ltd
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2024-04-19
Anticipated expiration: 2033-09-18

Abstract

The utility model discloses a novel patch type transformer, which comprises: the framework main body comprises a central cylinder, a first substrate and a second substrate, wherein the first substrate and the second substrate are respectively arranged at two end parts of the central cylinder, a winding area is formed by the first substrate, the second substrate and the cylinder body of the central cylinder, and metal pins extending towards the direction far away from the central cylinder are arranged on the second substrate; the two magnetic cores are symmetrically inserted in the central cylinder, each magnetic core comprises a magnetic core bottom plate, two ends of one side of each magnetic core bottom plate are respectively provided with an end bump, the inner sides of the end bumps are provided with arc surfaces, the middle of each magnetic core bottom plate is provided with a cylinder, the cylinders are inserted in the central cylinder, and a heat dissipation gap is arranged between the end faces of the two cylinders; the winding group is wound in the winding area, and the lead wires of the winding group are connected with the metal pins. The utility model has simple structure, effectively reduces magnetic leakage, effectively improves the leakage inductance and improves the efficiency of the transformer.

Description

Novel patch type transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a novel patch type transformer.

Background

The electronic transformer has an electronic device for converting alternating voltage of mains supply into direct current and then forming a high-frequency alternating voltage output through a semiconductor switching device, an electronic element and a high-frequency transformer winding, and is also an alternating-current-direct-current-alternating-current inverter circuit taught in the electronics theory. In short, it mainly consists of a high-frequency transformer core and two or more coils, which are not changed in position from each other, and are converted into alternating voltage and current by electromagnetic induction action through alternating current power in one or more electric loops. And at the output end of the high-frequency transformer, one or more than two power circuits are supplied with high-frequency alternating current or direct current with different voltage levels.

The existing patch type transformer has the defects of large magnetic leakage, low efficiency and poor heat dissipation effect due to the defects of design.

Therefore, the existing chip transformer needs to be further improved.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provide the novel patch type transformer which has a simple structure, effectively reduces magnetic leakage, effectively improves the leakage inductance and improves the efficiency of the transformer.

In order to achieve the above purpose, the present utility model adopts the following scheme: a novel patch transformer, comprising:

The framework main body comprises a central cylinder, a first substrate and a second substrate, wherein the first substrate and the second substrate are respectively arranged at two end parts of the central cylinder, a winding area is formed by the first substrate, the second substrate and the cylinder body of the central cylinder in an encircling manner, and a metal pin extending towards the direction far away from the central cylinder is arranged on the second substrate;

The two magnetic cores are symmetrically inserted into the central cylinder, each magnetic core comprises a magnetic core bottom plate, two ends of one side of each magnetic core bottom plate are respectively provided with an end bump, the inner sides of the end bumps are provided with arc surfaces, a cylinder is arranged in the middle of each magnetic core bottom plate, the cylinders are inserted into the central cylinder, and a heat dissipation gap is arranged between the end surfaces of each two cylinders;

and the winding group is wound in the winding area, and a lead of the winding group is connected with the metal pin.

As another improvement of the patch type transformer, a wrapping and fixing layer which can enable the magnetic core to be fixedly connected to the framework main body is arranged on the outer side of the magnetic core.

As another improvement of the patch transformer of the present utility model, the angle of the arc-shaped surface is 45 degrees.

As another improvement of the patch transformer, the left side and the right side of the second substrate are respectively provided with a pin installation part, a plurality of lead grooves are arranged on the pin installation part, and the metal pins are arranged on the pin installation part.

As another improvement of the patch transformer of the present utility model, the metal pins are right-angle L-shaped pins.

As another improvement of the patch transformer of the present utility model, a heat dissipation center hole is provided at the center of the cylinder in the axial direction, and the heat dissipation center hole is communicated with the heat dissipation gap.

As another improvement of the patch type transformer, a plurality of heat dissipation grooves are uniformly distributed on the outer wall of the cylinder body of the central cylinder, and the heat dissipation grooves are communicated with the heat dissipation gaps.

As another improvement of the chip transformer of the present utility model, a protective layer is wound around the outside of the winding group.

In summary, compared with the prior art, the utility model has the following beneficial effects: an arc-shaped surface is arranged on the inner side of the end bump in the magnetic core, and a gap of 0.01-0.3mm is formed between the arc-shaped surface and the winding group. By reducing the air gap spacing, the magnetic leakage can be reduced, so that the leakage inductance value of the transformer is effectively improved. In addition, the heat dissipation center hole in the magnetic core, the heat dissipation gap and the heat dissipation groove are matched with each other, so that heat in the transformer can be quickly transferred to the outside, and the heat dissipation efficiency is greatly improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is an exploded view of the present utility model.

Fig. 3 is a schematic perspective view of a skeleton body of the present utility model.

Fig. 4 is a schematic perspective view of a magnetic core according to the present utility model.

Fig. 5 is a schematic cross-sectional view of the present utility model.

Fig. 6 is a schematic perspective view of another embodiment of the present utility model.

Fig. 7 is a schematic cross-sectional view of fig. 6.

In the figure: 1. a skeleton main body; 11. a central cylinder; 12. a first substrate; 13. a second substrate; 15. a winding area; 16. a metal pin; 17. a pin mounting part; 18. a wire slot; 2. a magnetic core; 21. a magnetic core base plate; 22. a tip bump; 23. an arc surface; 24. a cylinder; 25. a heat dissipation gap; 3. a winding group; 4. wrapping the fixed layer; 5. a heat dissipation center hole; 6. a protective layer; 7. a heat sink.

Detailed Description

The above and further technical features and advantages of the present utility model are described in more detail below with reference to the accompanying drawings.

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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 skilled in the art according to the specific circumstances.

Referring to fig. 1-7, the novel patch transformer of the present utility model comprises:

A skeleton body 1, wherein the skeleton body 1 comprises a central cylinder 11, a first substrate 12 and a second substrate 13, the first substrate 12 and the second substrate 13 are respectively arranged at two ends of the central cylinder 11, a winding area 15 is formed by the first substrate 12, the second substrate 13 and a cylinder body of the central cylinder 11, and a metal pin 16 extending in a direction far away from the central cylinder 11 is arranged on the second substrate 13;

The two magnetic cores 2 are symmetrically inserted into the central cylinder 11, the magnetic cores 2 comprise a magnetic core bottom plate 21, end projections 22 are respectively arranged at two ends of one side of the magnetic core bottom plate 21, arc surfaces 23 are arranged on the inner sides of the end projections 22, a cylinder 24 is arranged in the middle of the magnetic core bottom plate 21, the cylinder 24 is inserted into the central cylinder 11, and a heat dissipation gap 25 is arranged between the end surfaces of the two cylinders 24;

and the winding group 3 is wound in the winding area 15, and the lead wire of the winding group 3 is connected with the metal pin 16.

An arc-shaped surface is arranged on the inner side of the end bump in the magnetic core, and a gap of 0.01-0.3mm is formed between the arc-shaped surface and the winding group. By reducing the air gap spacing, the magnetic leakage can be reduced, so that the leakage inductance value of the transformer is effectively improved.

The utility model is provided with a wrapping and fixing layer 4 which can enable the magnetic core 2 to be fixedly connected to the framework main body 1 at the outer side of the magnetic core 2. The two magnetic cores 2 can be effectively fixed on the skeleton main body 1 by wrapping the fixing layer 4. The wrapping and fixing layer 4 is an insulating adhesive tape.

The fan angle of the arc-shaped surface 23 is 45 degrees. The appropriate angle makes the clearance between the inner wall of the magnetic core 2 and the winding group smaller, so that the magnetic leakage can be effectively reduced.

The utility model is provided with a pin mounting part 17 on the left and right sides of the second substrate 13, a plurality of lead grooves 18 are arranged on the pin mounting part 17, and the metal pins 16 are arranged on the pin mounting part 17. The metal pins 16 are right angle L-shaped pins. The right-angle L-shaped pins can enable the transformer to be better attached to the circuit board.

Referring to fig. 6 to 7, the present utility model is provided with a heat dissipation center hole 5 in the axial direction at the center of the cylinder 24, and the heat dissipation center hole 5 communicates with the heat dissipation gap 25. A plurality of heat dissipation grooves are uniformly distributed on the outer wall of the cylinder body of the central cylinder 11. The heat dissipation grooves are heat dissipation vertical grooves parallel to the axial direction of the central cylinder 11, and the heat dissipation vertical grooves are mutually perpendicular to the winding direction, so that uniform winding of the winding group on the central cylinder 11 is not hindered. According to the utility model, the heat dissipation center hole 5, the heat dissipation gap 25 and the heat dissipation groove 7 are matched with each other, so that the heat in the transformer can be effectively dissipated to the outside, and the heat dissipation efficiency is greatly improved.

In the utility model, a protective layer 6 is wound on the outer side of the winding group 3. The protective layer 6 is an insulating protective layer.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A novel patch transformer, comprising:

The framework main body (1), the framework main body (1) comprises a central cylinder (11), a first substrate (12) and a second substrate (13), the first substrate (12) and the second substrate (13) are respectively arranged at two end parts of the central cylinder (11), a winding area (15) is formed by the first substrate (12), the second substrate (13) and the cylinder body of the central cylinder (11), and a metal pin (16) extending towards the direction far away from the central cylinder (11) is arranged on the second substrate (13);

The two magnetic cores (2), two magnetic cores (2) are symmetrically inserted into the central cylinder (11), the magnetic cores (2) comprise a magnetic core bottom plate (21), end projections (22) are respectively arranged at two ends of one side of the magnetic core bottom plate (21), an arc surface (23) is arranged on the inner side of each end projection (22), a cylinder (24) is arranged in the middle of the magnetic core bottom plate (21), the cylinders (24) are inserted into the central cylinder (11), and a heat dissipation gap (25) is arranged between the end surfaces of the two cylinders (24);

The winding unit (3) is wound in the winding area (15), and a lead wire of the winding unit (3) is connected with the metal pin (16).

2. The novel patch transformer according to claim 1, wherein a wrapping fixing layer (4) is provided on the outer side of the magnetic core (2) to enable the magnetic core (2) to be fixedly connected to the skeleton main body (1).

3. A new type of patch transformer according to claim 1, characterized in that the angle of the arcuate surface (23) is 45 degrees.

4. The novel chip transformer according to claim 1, wherein pin mounting portions (17) are respectively arranged on the left side and the right side of the second substrate (13), a plurality of lead grooves (18) are formed in the pin mounting portions (17), and the metal pins (16) are arranged on the pin mounting portions (17).

5. A novel chip transformer as claimed in claim 1 or 4, characterized in that said metal pins (16) are right-angle L-shaped pins.

6. A novel chip transformer according to claim 1, characterized in that a heat-dissipating center hole (5) is provided in the center of the cylinder (24) in the axial direction, the heat-dissipating center hole (5) being in communication with the heat-dissipating gap (25).

7. The novel patch transformer according to claim 6, wherein a plurality of heat dissipation grooves (7) are uniformly distributed on the outer wall of the cylinder body of the central cylinder (11), and the heat dissipation grooves (7) are communicated with the heat dissipation gap (25).

8. A new type of chip transformer according to claim 1, characterized in that a protective layer (6) is wound on the outside of the winding group (3).