CN219575328U

CN219575328U - High-frequency transformer

Info

Publication number: CN219575328U
Application number: CN202320321836.6U
Authority: CN
Inventors: 钱正; 张建一; 李长江; 邬程广
Original assignee: Cowell Technology Co ltd
Current assignee: Cowell Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-08-22
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a high-frequency transformer, which comprises a primary side wire package N1, a primary side wire package N3 and a secondary side wire package N2, wherein the primary side wire package N1 and the primary side wire package N3 are connected in series, the primary side wire package N1 and the primary side wire package N3 wrap the secondary side wire package N2, and windings of the primary side wire package N1, the primary side wire package N3 and the secondary side wire package N2 are copper sheets; the utility model has the advantages that: the installation is convenient, small, and the heat of inner winding can be conducted to the skin and dispel the heat.

Description

High-frequency transformer

Technical Field

The utility model relates to the field of transformers, in particular to a high-frequency transformer.

Background

With the progress of new energy technology, various power electronic energy devices are continuously emerging. In a power electronic energy conversion device, a high-voltage high-frequency transformer is an essential important component. However, in the related art, for the EE-type window magnetic core, the copper wire or the litz wire is used for winding the wire, the winding is not good, the number of turns is more and difficult to install, the window area of the magnetic core is occupied, the volume of the high-frequency transformer coil is increased, an air gap is reserved between the copper wire or the litz wire after winding, the heat conduction and heat dissipation of the inner coil are not facilitated, namely, the heat of the inner coil is difficult to be conducted to the outer layer for heat dissipation, and the inner coil is overheated and damaged under high current or high temperature.

Disclosure of Invention

The utility model aims to solve the technical problems that a high-frequency transformer coil in the prior art is not well wound, the number of turns is large, the installation is difficult, the volume is large, and the heat of an inner winding is difficult to conduct to an outer layer for heat dissipation.

The utility model solves the technical problems by the following technical means: the utility model provides a high-frequency transformer, includes former limit package N1, former limit package N3 and vice limit package N2, former limit package N1 and former limit package N3 series connection, former limit package N1 and former limit package N3 wrap up vice limit coil N2, and former limit package N1, former limit package N3 and vice limit package N2's winding is the copper sheet.

The beneficial effects are that: when current flows through the secondary side of the high-frequency transformer, the secondary side wire package N2 has impedance to cause heating, and because the primary side wire package N1, the primary side wire package N3 and the secondary side wire package N2 are tightly wound, the heat can be transferred to the primary side wire package N1 and the primary side wire package N3 and then transferred to the outermost layer by the primary side wire package N1 and the primary side wire package N3, the aim of reducing the temperature of the internal wire package is achieved, and compared with a copper wire or litz wire structure, the copper wire is more compact, the copper wire is small in size, has fewer turns relatively, is convenient to install and is convenient for field application.

Further, an insulating layer is arranged on the surface of the copper sheet.

Furthermore, the insulating layer is back glue arranged on the surface of the copper sheet.

Further, the primary coil N1 and the primary coil N3 are respectively disposed at two ends of the whole transformer, and the secondary coil N2 is disposed at a middle position of the whole transformer.

Further, the high-frequency transformer further comprises a heat dissipating device, and the heat dissipating device is arranged on the outer side of the whole transformer.

Further, the winding tap of the primary coil N1 and the primary coil N3 are sleeved with fiber sleeves.

Further, the winding tap of the secondary side wire package N2 is sleeved with a teflon sleeve

Further, the heat dissipation device is a fan.

The utility model has the advantages that: when current flows through the secondary side of the high-frequency transformer, the secondary side wire package N2 has impedance to cause heating, and because the primary side wire package N1, the primary side wire package N3 and the secondary side wire package N2 are tightly wound, the heat can be transferred to the primary side wire package N1 and the primary side wire package N3 and then transferred to the outermost layer by the primary side wire package N1 and the primary side wire package N3, the aim of reducing the temperature of the internal wire package is achieved, and compared with a copper wire or litz wire structure, the copper wire is more compact, the copper wire is small in size, has fewer turns relatively, is convenient to install and is convenient for field application.

Drawings

Fig. 1 is an electrical schematic diagram of a high frequency transformer according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a high-frequency transformer according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, a high-frequency transformer includes a primary winding N1, a primary winding N3, and a secondary winding N2, where the primary winding N1 and the primary winding N3 are connected in series, the primary winding N1 and the primary winding N3 are respectively disposed at two ends of the whole transformer, the secondary winding N2 is disposed at a middle position of the whole transformer, the primary winding N1 and the primary winding N3 wrap the secondary winding N2, windings of the primary winding N1, the primary winding N3, and the secondary winding N2 are copper sheets, and the copper sheets have a specification of 0.3×35mm, wherein 0.3 is a copper sheet thickness of 0.3mm, and 35 is a copper sheet width of 35mm. The copper sheet is insulated by using a high-temperature adhesive tape back adhesive of 0.05X54 mm, namely an insulating layer is arranged on the surface of the copper sheet, wherein the thickness of the high-temperature adhesive tape is 0.05mm, and the width of the high-temperature adhesive tape is 54mm. The winding tap sleeves of the primary side wire package N1 and the primary side wire package N3 are sleeved with fiber sleeves, and the winding tap sleeve of the secondary side wire package N2 is sleeved with a teflon sleeve. And the insulation between the tap of the primary side wire package and the edge of the secondary side wire package is enhanced by the fiber sleeve for insulation between the primary side wire package and the wire package of the secondary side. The Teflon sleeve for pin output of the high-frequency transformer not only resists the high temperature generated by welding the pin, but also strengthens the insulation of the pin. In fig. 2, 1TS represents 1 turn of the insulation layer of the coil, and 3TS represents 3 turns of the insulation layer of the coil.

As a further development, the high-frequency transformer further comprises a heat sink, which is arranged outside the entire transformer. In this embodiment, the heat dissipation device is a fan, and other heat dissipation manners, such as an air cooler, an air conditioner, and the like, may be adopted in practical application.

When current flows through the secondary side of the high-frequency transformer, the secondary side coil N2 has impedance, so that heat is generated, because the primary side coil N1, the primary side coil N3 and the secondary side coil N2 are tightly wound and are provided with insulating layers, the heat can be slowly transferred to the primary side coil N1 and the primary side coil N3 through the insulating layers, then transferred to the outermost layer through the primary side coil N1 and the primary side coil N3, and the heat is blown away by an outside cooling fan, thereby achieving the aim of reducing the temperature of the internal coil.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a high-frequency transformer, its characterized in that includes former limit package N1, former limit package N3 and vice limit package N2, former limit package N1 and former limit package N3 series connection, former limit package N1 and former limit package N3 wrap up vice limit coil N2, and the winding of former limit package N1, former limit package N3 and vice limit package N2 is the copper sheet.

2. A high frequency transformer according to claim 1, wherein the copper sheet is provided with an insulating layer on the surface thereof.

3. The high frequency transformer according to claim 2, wherein the insulating layer is a back adhesive disposed on a surface of the copper sheet.

4. A high frequency transformer according to claim 1, wherein the primary winding N1 and the primary winding N3 are disposed at both ends of the entire transformer, respectively, and the secondary winding N2 is disposed at a middle of the entire transformer.

5. The high frequency transformer according to claim 1, further comprising a heat sink, the heat sink being disposed outside the entire transformer.

6. The high frequency transformer according to claim 5, wherein the heat sink is a fan.

7. A high frequency transformer according to claim 1, wherein the winding taps of the primary winding N1 and the primary winding N3 are sleeved with fibrous bushings.

8. A high frequency transformer according to claim 1, wherein the winding tap of the secondary winding N2 is sleeved with a teflon sleeve.