CN216902480U

CN216902480U - PQ type high frequency transformer

Info

Publication number: CN216902480U
Application number: CN202123338294.3U
Authority: CN
Inventors: 贾正兵
Original assignee: Taicang Otai Electronics Co ltd
Current assignee: Taicang Otai Electronics Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-05
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a PQ type high-frequency transformer, which comprises a transformer body, a plurality of windings and a plurality of control circuits, wherein the transformer body comprises a magnetic core group and a plurality of windings; a plurality of windings are coaxially wound; rectangular frameworks are symmetrically arranged on two sides of the outer portion of the winding, a plurality of pins are arranged on the two rectangular frameworks respectively, and the pins are connected with the winding; a magnetic core protective shell is also arranged outside the rectangular framework on one side; the transformer has the advantages that the transformer can meet the use requirements of the transformer and the use standards of various countries, the creepage distance can be increased through the arranged magnetic core protective shell, the use requirements can be met, the safety performance can be further improved, and the transformer is convenient to use by people; and the bottom of PIN5 is wrapped with the reverse-folding adhesive tape, so that the withstand voltage of the magnetic core and the PCB can be improved, and the technical scheme can realize electromagnetic compatibility and is convenient to popularize and use.

Description

PQ type high frequency transformer

Technical Field

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

Background

The high-frequency transformer is used as the most main component of the switching power supply, and the turn ratio of each winding coil of the high-frequency transformer determines the output voltage; in a switching power supply, a high-frequency transformer is an important component for energy storage and transmission; a high-frequency transformer should have the characteristics of small leakage inductance, small coil distributed capacitance and small coupling capacitance among the coils;

the high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency (10kHz), is mainly used as a high-frequency switching power transformer in a high-frequency switching power supply, and is also used as a high-frequency inverter power transformer in a high-frequency inverter power supply and a high-frequency inverter welding machine; however, the use requirements and standards of the high-frequency transformer in various countries are different at present, the high-frequency transformer which is universal in China cannot be applied to the high-frequency transformer when being exported to foreign countries, and a uniform use standard is lacked;

in view of the above, there is a need for an improved structure of the existing high-frequency voltage transformer, which can meet the requirements of the high-frequency voltage transformer in various countries.

SUMMERY OF THE UTILITY MODEL

Because the existing PQ-type high-frequency transformer cannot adapt to the use standard of each country, the PQ-type high-frequency transformer is designed on the basis of the defects of the prior art, can adapt to the use standard of each country, and has good use effect.

The technical scheme of the utility model is that the main body of the PQ-type high-frequency transformer is a transformer, the transformer comprises a magnetic core group and a plurality of windings, the windings are arranged in the magnetic core group, and two ends of a winding of each winding are pulled out from one side of the magnetic core group; a plurality of windings are coaxially wound; rectangular frameworks are symmetrically arranged on two sides of the outer portion of the winding, a plurality of pins are arranged on the two rectangular frameworks respectively, and the pins are connected with the winding; a magnetic core protective shell is also arranged outside the rectangular framework on one side.

Further supplementing the technical scheme, the winding is sequentially provided with N1, N2, N3, N4, N5 and N6 from bottom to top.

Further supplementing the technical scheme, the N2 and the N3 are in parallel connection.

To the further supplement of this technical scheme, the PIN includes PIN1, PIN2, PIN3, PIN4, PIN5, PIN6, PIN1, PIN2, PIN3, PIN4 set up on the rectangle skeleton of one side, PIN5, PIN6 set up on the rectangle skeleton of other side installation magnetic core protective case.

The technical scheme is further supplemented that before winding, the N4 sticks reverse-folding adhesive tapes to the PIN edges of PIN1, PIN2, PIN3 and PIN4 and then winds the N4, and after the winding of the N4 is finished, the reverse-folding adhesive tapes are reversely wound back into the coil.

Further complementary to this solution, the

PINs

5, 6 are taped from the bottom to the side.

Further supplementing the technical scheme, the PIN6 is cut.

Further supplementing the technical scheme, the outer surface of the rectangular framework on one side without the magnetic core protective shell is coated with a 15mm adhesive tape.

The transformer has the advantages that the transformer can meet the use requirements of transformers and the use standards of various countries, the creepage distance can be increased through the arranged magnetic core protective shell, the use requirements can be met, the safety performance can be further improved, and the transformer is convenient to use by people; and the bottom of PIN5 is wrapped with the reverse-folding adhesive tape, so that the withstand voltage of the magnetic core and the PCB can be improved, and the technical scheme can realize electromagnetic compatibility and is convenient to popularize and use.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic left side view of the present invention;

FIG. 3 is a schematic bottom view of the present invention;

FIG. 4 is a schematic view of the mounting structure of the winding of the present invention;

in the figure, 1, a magnetic core group; 2. a winding; 3. a pin; 4. a magnetic core protective shell; 5. winding; 6. a rectangular framework; 7. and folding the adhesive tape.

Detailed Description

Because the existing PQ-type high-frequency transformer cannot adapt to the use standards of various countries, the PQ-type high-frequency transformer is designed on the basis of the defects of the prior art, can adapt to the use standards of various countries, and has a good use effect.

In order to make the technical solution more clear to those skilled in the art, the technical solution of the present invention will be described in detail below with reference to fig. 1 to 4:

a main body of the PQ-type high-frequency transformer is a transformer, the transformer comprises a magnetic core group (1) and a plurality of windings (2), the windings (2) are arranged in the magnetic core group (1), and two ends of a winding (5) of each winding (2) are pulled out from one side of the magnetic core group (1); a plurality of windings (2) are coaxially wound; rectangular frameworks (6) are symmetrically arranged on two sides of the outer portion of the winding (2), a plurality of pins (3) are respectively arranged on the two rectangular frameworks (6), and the pins (3) are connected with the winding (2); a magnetic core protective shell (4) is arranged outside the rectangular framework (6) on one side, so that the creepage distance can be increased, the use standards of various countries are met, and the safety performance of the magnetic core protective shell is further improved;

the winding (2) is sequentially provided with N1, N2, N3, N4, N5 and N6 from bottom to top, and further the N2 and the N3 adopt double-wire parallel winding.

In detail, the PINs (3) comprise PIN1, PIN2, PIN3, PIN4, PIN5 and PIN6, the PIN1, PIN2, PIN3 and PIN4 are arranged on the rectangular framework (6) on one side, and the PIN5 and PIN6 are arranged on the rectangular framework (6) on the other side of the magnetic core protection shell (4); before winding (5), the N4 sticks the reverse-folding adhesive tape 7 to the side ends of the PINs PIN1, PIN2, PIN3 and PIN4, then the N4 is wound (5), and after the winding of the N4 is finished, the reverse-folding adhesive tape 7 is reversely wound in a coil, and the setting purpose is to increase the distance from the coil of the secondary winding, which is close to the side of the primary PIN, to the primary lead-out wire; the PIN5 and the PIN6 are wrapped with the reverse-folding adhesive tape 7 from the bottom to the side face, the withstand voltage of the magnetic core and the PCB can be improved, electromagnetic compatibility can be achieved, and the PIN6 is cut as the PIN6 may not be used in use.

Wherein, the outer surface of the rectangular framework (6) at one side without the magnetic core protective shell (4) is coated with 15mm adhesive tape.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims

1. A main body of the PQ-type high-frequency transformer is a transformer, the transformer comprises a magnetic core group and a plurality of windings, and the PQ-type high-frequency transformer is characterized in that the windings are arranged in the magnetic core group, and two ends of a winding of each winding are pulled out from one side of the magnetic core group; a plurality of windings are coaxially wound; rectangular frameworks are symmetrically arranged on two sides of the outer portion of the winding, a plurality of pins are arranged on the two rectangular frameworks respectively, and the pins are connected with the winding; a magnetic core protective shell is also arranged outside the rectangular framework on one side.

2. The PQ-type high frequency transformer according to claim 1, wherein the winding is sequentially provided with N1, N2, N3, N4, N5, and N6 from bottom to top.

3. The PQ-type high frequency transformer according to claim 2, wherein N2 and N3 are connected in parallel.

4. The PQ-type high frequency transformer according to claim 3, wherein said PINs comprise PIN1, PIN2, PIN3, PIN4, PIN5 and PIN6, said PIN1, PIN2, PIN3 and PIN4 are arranged on the rectangular frame of one side, said PIN5 and PIN6 are arranged on the rectangular frame of the other side mounted core shield.

5. The PQ-type high frequency transformer according to claim 4, wherein the N4 is formed by attaching the reverse folding adhesive tape (7) to the PIN ends of PIN1, PIN2, PIN3 and PIN4 before winding, then winding N4, and after the winding of N4 is finished, the reverse folding adhesive tape (7) is reversely wound into a coil.

6. The PQ-type high frequency transformer according to claim 5, wherein said PIN5, 6 are taped back from bottom to side.

7. The PQ-type high frequency transformer according to claim 4, wherein the PIN6 is cut.

8. The PQ-type high frequency transformer according to claim 1, wherein the rectangular bobbin without the magnetic core sheath is coated with 15mm of tape on the outer surface thereof.