CN206595131U - A kind of high frequency transformer - Google Patents

Abstract

This application discloses a high-frequency transformer, which is used in high-frequency switching power supplies, and is specifically composed of a primary coil, a secondary coil, a magnetic core, two circular insulating pads, a conductive column and a conductive plate. The above-mentioned components are based on a preset method Constructed together, since all output taps of the secondary coil are on the same side of the transformer, the rectification device connected to it can be integrated, and the volume of the high-frequency switching power supply applied to it can be effectively controlled, thereby solving high-frequency The problem of the large size of the switching power supply makes it easy to install and use. The secondary coil is fully screw connected, with a high degree of modularization, and the assembly efficiency is greatly improved compared with the traditional transformer installation; the conductive column and the conductive plate can be molded and cast, and the mass production cost is low.

Description

A high frequency transformer

technical field

The present application relates to the technical field of transformers, and more specifically, to a high-frequency transformer.

Background technique

With the rapid development of power electronics technology and industrial production, industrial power supplies have put forward new requirements for efficiency, reliability, and volume. High-frequency switching power supply is widely used in low-voltage and high-current industries such as copper foil production, crystal growth, and steel smelting with its advantages of high efficiency and small size. The high-frequency transformer is the core component of the high-frequency switching power supply. The structure and volume of the high-frequency transformer will directly affect the overall volume of the high-frequency switching power supply. However, the taps of the secondary coil of the traditional high-frequency transformer are on both sides of the transformer, so that the external rectifier device must be made into a split structure, and the structure is not compact enough, which increases the volume of the high-frequency switching power supply and makes the high-frequency switching power supply It is inconvenient to install and use.

Utility model content

In view of this, the present application provides a high-frequency transformer, which is applied to a high-frequency switching power supply, so as to solve the problem of large volume of the high-frequency switching power supply due to the insufficient structure of the traditional high-frequency transformer.

In order to achieve the above purpose, the proposed scheme is as follows:

A high-frequency transformer applied to a high-frequency switching power supply, including a magnetic core, a primary coil, a secondary coil, a conductive plate, at least one conductive column and an insulating pad, wherein:

The primary coil is wound on a magnetic core;

The secondary coil includes at least a secondary first coil and a secondary second coil;

There are through holes around the conductive plate;

The upper and lower ends of the conductive column are provided with threaded holes;

Both the secondary first coil and the secondary second coil pass through the magnetic core, and the tail ends of the secondary second coil are connected to the conductive plate through screws;

The tail end of the conductive column is connected to the conductive plate through screws, and is evenly distributed around the magnetic core, and the head end of the conductive column is on the same surface as the first end of the secondary coil. Forming two taps of the secondary coil, the taps are used to connect with an external rectifying device;

The tail end of the secondary first coil is short-circuited with the head end of the secondary second coil to form a center tap of the secondary coil.

Optionally, the output taps of the secondary first coil and the output taps of the secondary second coil are on the same side of the transformer.

Optionally, there are multiple conductive pillars, and threaded holes are arranged at the upper and lower ends, and are evenly distributed around the magnetic core;

The shape of the conductive column can be any geometric shape such as a cylinder, a cuboid, or the like.

Optionally, the conductive plate is evenly distributed with through holes for connecting the secondary coil, and the shape of the conductive plate may be any geometric shape such as a circle, a rectangle, or a polygon.

Optionally, the connection between the conductive post, the conductive plate and the secondary coil is a screw fixing structure.

Optionally, after the primary coil is wound on the magnetic core, insulating pads are provided on the upper and lower surfaces of the magnetic core.

The secondary first coil, secondary second coil, conductive plate, and conductive column are all conductive metal materials.

Optionally, the magnetic core is an ultramicrocrystalline magnetic core, a ferrite magnetic core, or an amorphous magnetic core.

Optionally, all or part of the secondary second coil, the conductive plate and the conductive column are an integrated structure.

It can be seen from the above technical solution that this application discloses a high-frequency transformer, which is applied to a high-frequency switching power supply, and is specifically composed of a primary coil, a secondary coil, a magnetic core, an insulating pad, a conductive column, and a conductive plate. The above-mentioned components Constructed together according to the preset method, since all output taps of the secondary coil are on the same side of the transformer, the rectification device connected to it can be integrated, and the volume of the high-frequency switching power supply applied to it can be effectively controlled. Therefore, the problem of large volume of the high-frequency switching power supply can be solved, so that it can be conveniently installed and used.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the exploded schematic diagram of a kind of high-frequency transformer embodiment provided by the present application;

Fig. 2 is the schematic diagram of the assembly of a kind of high-frequency transformer provided by the present application;

Fig. 3 is the assembly diagram of another kind of high-frequency transformer provided by the present application;

FIG. 4 is a schematic diagram of assembly of another high-frequency transformer provided by the present application;

FIG. 5 is a schematic diagram of assembly of another high-frequency transformer provided by the present application;

FIG. 6 is a schematic diagram of assembly of another high-frequency transformer provided by the present application;

Figure 7 is a schematic diagram of the assembly of another high-frequency transformer provided by the present application;

FIG. 8 is a schematic assembly diagram of another high-frequency transformer provided by the present application;

Fig. 9 is an assembly schematic diagram of another high-frequency transformer provided by the present application;

Fig. 10 is a schematic diagram of the assembly of another high-frequency transformer provided by the present application;

Fig. 11 is a schematic diagram of the assembly of another high-frequency transformer provided by the present application;

FIG. 12 is an exploded schematic diagram of another high-frequency transformer provided by the present application;

FIG. 13 is an exploded schematic diagram of another high-frequency transformer provided by the present application;

FIG. 14 is an exploded schematic diagram of another high-frequency transformer provided by the present application;

Fig. 15 is an exploded schematic diagram of another high-frequency transformer provided by the present application;

Fig. 16 is an exploded schematic diagram of another high-frequency transformer provided by the present application;

Fig. 17 is an exploded schematic diagram of another high-frequency transformer provided by the present application;

Fig. 18 is a schematic diagram of the assembly of another high-frequency transformer provided by the present application;

Fig. 19 is an assembly schematic diagram of another high-frequency transformer provided by the present application;

Fig. 20 is an assembly schematic diagram of another high-frequency transformer provided by the present application;

Fig. 21 is a schematic diagram of the assembly of another high-frequency transformer provided by the present application;

10-secondary first coil, 11-head end of secondary first coil, 12-tail end of secondary first selection, 20-secondary second coil, 21-head end of secondary second coil, 30 - insulating pad, 40 - primary coil, 50 - insulating pad, 60 - conductive column, 70 - conductive plate, 80 - magnetic core.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

FIG. 1 is an exploded schematic diagram of a high-frequency transformer provided by the present application.

As shown in Figure 1, the high-frequency transformer provided by this application is applied to a high-frequency switching power supply, and specifically includes a secondary coil, which is composed of a secondary first coil 10 and a secondary second coil 20, and also includes a primary Coil 40 , magnetic core 80 , insulating pads 30 , 50 , conductive post 60 and conductive plate 70 .

The primary coil is wound on the magnetic core, and the secondary first coil 10 and the secondary second coil 20 pass through the magnetic core 80 . The tail end 22 of the secondary second coil 20 is connected to the conductive plate 70 by screws, and the tail end of the conductive column 60 is connected to the conductive plate 70 by screws, and is evenly distributed around the magnetic core 80. The first end of the conductive column 60 is connected to the secondary The first end 11 of the primary coil 10 is on the same plane, forming two taps of the secondary coil, which are connected to an external rectifying device. The tail end 12 of the secondary first coil 10 and the head end 21 of the secondary second coil 20 are externally shorted together through a conductor to form a center tap of the secondary coil.

The fixing of the conductive plate 70, the conductive column 60 and the secondary second coil 20 is a screw fixing structure, and the positions corresponding to the conductive column 60 and the secondary second coil 20 and the conductive plate 70 are all provided with through holes for screw fixing. After the secondary second coil 20 passes through the magnetic core 80 and its position is adjusted, the conductive plate 70 is screwed to the secondary second coil 20 and the conductive post 60 . The specific assembly diagram after installation is shown in FIG. 2 .

It can be seen from the above technical solution that the present application provides a high-frequency transformer, which is applied to a high-frequency switching power supply, and is specifically composed of a primary coil, a secondary coil, a magnetic core, two insulating pads, a conductive column and a conductive plate. The components are constructed together according to the preset method. Since all output taps of the secondary coil are on the same side of the transformer, the rectification device connected to it can be integrated, and the volume of the high-frequency switching power supply applied to it can be effectively controlled. , so as to solve the problem of a large volume of the high-frequency switching power supply, thereby making it easy to install and use.

In a specific embodiment of the present application, the output taps of the secondary first coil and the output taps of the secondary second coil are both on the same side of the transformer. See Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, Figure 20 and Figure 21.

In addition, there are a plurality of conductive posts, and threaded holes are provided at both upper and lower ends, and are evenly distributed around the magnetic core; the shape of the conductive posts can be any geometric shape such as a cylinder or a cuboid.

In addition, through holes for connecting the secondary coil are evenly distributed on the conductive plate, and the shape of the conductive plate can be any geometric shape such as a circle, a rectangle, or a polygon.

In addition, the connections between the conductive post, the conductive plate and the secondary coil are screw-fixed structures.

In addition, after the primary coil is wound on the magnetic core, insulating pads are provided on the upper and lower surfaces of the magnetic core.

In addition, the secondary first coil, the secondary second coil, the conductive plate, and the conductive column are all conductive metal materials.

In addition, the magnetic core is an ultramicrocrystalline magnetic core, a ferrite magnetic core, or an amorphous magnetic core.

In addition, all or part of the secondary second coil, the conductive plate and the conductive column are integrated structures.

The secondary coil is fully screw connected, with a high degree of modularization, and the assembly efficiency is greatly improved compared with the traditional transformer installation; the conductive column and the conductive plate can be molded and cast, and the mass production cost is low;

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a kind of high frequency transformer, it is characterised in that conductive including magnetic core, primary coil, secondary coil, conductive plate, at least one Post and felt pad, wherein：

The primary coil is wound on magnetic core；

The secondary coil at least includes secondary first coil and secondary second coil；

The conductive plate surrounding has through hole；

The conductive pole upper and lower ends are provided with screwed hole；

The secondary first coil both passes through the magnetic core with secondary second coil, and the tail end of secondary second coil leads to Screw is crossed to be connected with conductive plate；

The tail end of the conductive pole is connected by screw with the conductive plate, is distributed on around the magnetic core, the conductive pole Head end and secondary first secondary coil head end in the same face, form two taps of the secondary coil, it is described to take out Head is used to be connected with outside rectifying device；

The head end of the tail end of the secondary first coil and secondary second coil is shorted together, and forms the secondary coil Centre cap.

2. high frequency transformer according to claim 1, it is characterised in that the output tap of the secondary first coil and institute The output tap of secondary second coil is stated in the same side of transformer.

3. high frequency transformer according to claim 1, it is characterised in that the conductive pole is multiple, and upper and lower ends are all provided with Screwed hole is equipped with, and is distributed in around magnetic core；

The conductive pole shape can be cylinder or any geometry of cuboid.

4. high frequency transformer according to claim 1, it is characterised in that be evenly equipped with the conductive plate described for connecting The through hole of secondary coil, the conductive plate shape can be circular, rectangle or any geometry of polygon.

5. high frequency transformer according to claim 1, it is characterised in that the conductive pole, the conductive plate and described time The connection of level coil is screw fixed structure.

6. high frequency transformer according to claim 1, it is characterised in that after the magnetic core coiling primary coil, above and below it Two sides is provided with felt pad.

7. high frequency transformer according to claim 1, it is characterised in that the secondary first coil, secondary second coil, Conductive plate, conductive pole are conductive metallic material.

8. high frequency transformer according to claim 1, it is characterised in that the magnetic core is ultracrystalline magnetic core, ferrite magnetic Core, amorphous magnetic core.

9. high frequency transformer according to claim 1, it is characterised in that secondary second coil, the conductive plate with The conductive pole three or part are integrated.