CN210606917U

CN210606917U - Transformer coil

Info

Publication number: CN210606917U
Application number: CN201921778339.9U
Authority: CN
Inventors: 哈悦; 蒋改; 沈平; 张妍; 孙艳萍; 唐思琪; 常夏伟; 高薇; 陈泰; 蒋杰; 杜浩亮; 刘宁; 李富生; 张雷
Original assignee: Yinchuan Xin'anrui Electric Co ltd
Current assignee: Yinchuan Xin'anrui Electric Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-05-22
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to the technical field of transformers, in particular to a transformer coil, which aims to overcome the defects of the prior art and provide a transformer coil; it includes first mould and second mould, its characterized in that: a secondary coil is wound on the outer side of the first die and divided into an upper secondary coil and a lower secondary coil, the winding directions of the upper secondary coil and the lower secondary coil are opposite, a primary coil is wound on the outer side of the secondary coil, two dies are arranged between the primary coil and the secondary coil, and the primary coils are continuously wound in the same direction; the beneficial effects are as follows: the secondary coil adopts a novel winding method that each layer has two sections and the winding directions between the two sections are opposite, so that 1/2 interlayer insulation can be reduced, and a coil gap bridge is hidden in the coil, so that the coil volume is reduced, and the appearance is attractive.

Description

Transformer coil

Technical Field

The utility model relates to a transformer technical field specifically is a transformer coil.

Background

In the field of power electronics, and in particular in the field of switching power supplies, it is often necessary to convert an ac or dc power supply into a high-precision steady-state power supply. The switching power supply generally comprises three devices, namely a rectifier, an inverter and a transformer, and converts electric energy in one form (AC or DC) into high-precision steady-state electric energy in the same form or another form. The transformer is arranged at the rear end of the inverter in the switching power supply and plays roles in isolating and boosting and reducing voltage. The coil is an important component in the production process of the transformer, and the winding method of the coil determines the performance and the volume of the transformer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer coil, this transformer coil have neotype winding method.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model provides a transformer coil, includes first mould and second mould, its characterized in that: the outer side of the first die is wound with a secondary coil, the secondary coil is divided into an upper secondary coil and a lower secondary coil, the winding directions of the upper secondary coil and the lower secondary coil are opposite, the outer side of the secondary coil is wound with a primary coil, a second die is arranged between the primary coil and the secondary coil, and the primary coil is continuously wound in the same direction.

The starting ends of the upper secondary coil and the lower secondary coil are wound on the coil gap bridge, the coil gap bridge is arranged in the coil, and the starting winding directions of the upper secondary coil and the lower secondary coil are opposite.

A first lead wire row is welded on the last secondary coil and serves as a tail lead terminal of the last secondary coil; a second lead wire row is welded on the lower secondary coil and is used as a tail lead terminal of the lower secondary coil; the primary coil is provided with a third wire row and a fourth wire row, the third wire row is used as a starting lead terminal of the primary coil, the fourth wire row is used as a finishing lead terminal of the primary coil, and the third wire row and the fourth wire row are formed by bending wires wound around the primary coil.

The secondary coil is provided with a first supporting strip in the winding process, the first supporting strip enables the secondary coil to generate a first gap in the winding process, and the first gap can play a role in heat dissipation; the primary coil is provided with a second stay in the winding process, the second stay enables a second gap to be generated in the winding process of the primary coil, and the second gap can play a role in heat dissipation.

The wire wound by the secondary coil is a copper strip, and the wire wound by the primary coil is a copper wire.

And insulating paper is wound between the coil layers of the secondary coil, and insulating paper is wound between the coil layers of the primary coil.

The novel die is characterized in that a first epoxy framework is arranged around the first die, three layers of insulating paper are wound on the outer side of the first epoxy framework, a second epoxy framework is arranged around the second die, and three layers of insulating paper are wound on the outer side of the second epoxy framework.

The utility model has the advantages that: the secondary coil 3 adopts a novel winding method that each layer has two sections and the winding directions of the two sections are opposite, so that 1/2 interlayer insulation can be reduced, the coil gap bridge 305 is hidden inside the coil, the coil volume is reduced, and the appearance is attractive.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of fig. 1 according to the present invention;

fig. 3 is a winding diagram of the secondary coil in the present invention.

Shown in the figure: the coil structure comprises a first die 1, a first epoxy framework 2, a secondary coil 3, a primary coil 4, a first wire row 5, a second wire row 6, a third wire row 7, a fourth wire row 8, a second die 9, a second epoxy framework 10, a first stay 301, a last secondary coil 302, a lower secondary coil 303, a first gap 304, a coil bridge 305, a second stay 401 and a second gap 402.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The components, structures, mechanisms and the like described in the following examples are all conventional commercially available products unless otherwise specified.

A transformer coil, as shown in fig. 1-3, comprising a first mold 1 and a second mold 9, wherein: the outer side of the first die 1 is wound with a secondary coil 3, the secondary coil 3 is divided into an upper secondary coil 302 and a lower secondary coil 303, the winding directions of the upper secondary coil 302 and the lower secondary coil 303 are opposite, the outer side of the secondary coil 3 is wound with a primary coil 4, a second die 9 is arranged between the primary coil 4 and the secondary coil 3, and the primary coil 4 is continuously wound in the same direction.

The starting ends of the upper secondary coil 302 and the lower secondary coil 303 are wound on a coil bridge 305, the coil bridge 305 is arranged in the coil, and the starting directions of the upper secondary coil 302 and the lower secondary coil 303 are opposite.

A first wire row 5 is welded on the upper secondary coil 302, and the first wire row 5 is used as a tail lead terminal of the upper secondary coil 302; a second wire row 6 is welded on the lower secondary coil 303, and the second wire row 6 is used as a tail lead terminal of the lower secondary coil 303; the primary coil 4 is provided with a third wire row 7 and a fourth wire row 8, the third wire row 7 is used as a starting lead terminal of the primary coil 4, the fourth wire row 8 is used as an ending lead terminal of the primary coil 4, and the third wire row 7 and the fourth wire row 8 are formed by bending a wire wound on the primary coil 4.

The secondary coil 3 is provided with a first stay 301 in the winding process, the first stay 301 enables the secondary coil 3 to generate a first gap 304 in the winding process, and the first gap 304 can play a role in heat dissipation; the primary coil 4 is provided with a second stay 401 during the winding process, the second stay 401 enables a second gap 403 to be generated in the winding process of the primary coil 4, and the second gap 403 can play a role in heat dissipation.

The wire wound by the secondary coil 3 is a copper strip, and the wire wound by the primary coil 4 is a copper wire.

And insulating paper is wound between the coil layers of the secondary coil 3, and insulating paper is wound between the coil layers of the primary coil 4.

The novel epoxy mold is characterized in that a first epoxy framework 2 is arranged around the first mold 1, three layers of insulating paper are wound on the outer side of the first epoxy framework 2, a second epoxy framework 10 is arranged around the second mold 9, and three layers of insulating paper are wound on the outer side of the second epoxy framework 10. The first mold 1 and the second mold 9 are used for supporting the winding of the primary coil 4 and the secondary coil 3.

The utility model discloses a theory of operation does: the utility model discloses a transformer coil comprises secondary coil 3 and primary coil 4, secondary coil 3 comprises last secondary coil 302 and lower secondary coil 303, the initiating terminal of going up secondary coil 302 and lower secondary coil 303 is around locating on coil gap bridge 305, the originated direction of going up secondary coil 302 and lower secondary coil 303 is opposite, the trailing end of going up secondary coil 302 is around locating on first wire row 5, the trailing end of secondary coil 303 is around locating on second wire row 6 down, primary coil 4 is around locating the outside of secondary coil 3, primary coil 4 is the continuous coiling of same direction, the initiating terminal of primary coil 4 is around locating on third wire row 7, the end section of primary coil 4 is around locating on fourth wire row 8.

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. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A transformer coil comprising a first mould (1) and a second mould (9), characterized in that: the outside of first mould (1) is around being equipped with secondary (3), secondary (3) divide into secondary (302) and lower secondary (303), go up secondary (302) and down wind between secondary (303) to opposite, the outside of secondary (3) is around being equipped with primary (4), be provided with second mould (9) between primary (4) and secondary (3), primary (4) are the continuous coiling of same direction.

2. A transformer coil according to claim 1, wherein: the starting ends of the upper secondary coil (302) and the lower secondary coil (303) are wound on a coil bridge (305), the coil bridge (305) is arranged in the coil, and the starting winding directions of the upper secondary coil (302) and the lower secondary coil (303) are opposite.

3. A transformer coil according to claim 1, wherein: a first wire row (5) is welded on the upper secondary coil (302), and the first wire row (5) is used as a tail lead terminal of the upper secondary coil (302); a second wire row (6) is welded on the lower secondary coil (303), and the second wire row (6) is used as a tail lead terminal of the lower secondary coil (303); the transformer is characterized in that a third wire row (7) and a fourth wire row (8) are arranged on the primary coil (4), the third wire row (7) is used as a starting lead terminal of the primary coil (4), the fourth wire row (8) is used as an ending lead terminal of the primary coil (4), and the third wire row (7) and the fourth wire row (8) are formed by bending a wire wound on the primary coil (4).

4. A transformer coil according to claim 1, wherein: the secondary coil (3) is provided with a first stay (301) in the winding process, the first stay (301) enables the secondary coil (3) to generate a first gap (304) in the winding process, and the first gap (304) can play a role in heat dissipation; the primary coil (4) is provided with a second stay (401) in the winding process, the second stay (401) enables the primary coil (4) to generate a second gap (403) in the winding process, and the second gap (403) can play a role in heat dissipation.

5. A transformer coil according to claim 1, wherein: the wire wound by the secondary coil (3) is a copper strip, and the wire wound by the primary coil (4) is a copper wire.

6. A transformer coil according to claim 1, wherein: insulating paper is wound among the coil layers of the secondary coil (3), and insulating paper is wound among the coil layers of the primary coil (4).

7. A transformer coil according to claim 1, wherein: the novel die is characterized in that a first epoxy framework (2) is arranged around the first die (1), three layers of insulating paper are wound on the outer side of the first epoxy framework (2), a second epoxy framework (10) is arranged around the second die (9), and three layers of insulating paper are wound on the outer side of the second epoxy framework (10).