CN105529152A

CN105529152A - Methods for lowering leakage inductance of pin transformer

Info

Publication number: CN105529152A
Application number: CN201610044865.7A
Authority: CN
Inventors: 刘国泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-22
Filing date: 2016-01-22
Publication date: 2016-04-27
Anticipated expiration: 2036-01-22
Also published as: CN105529152B

Abstract

The invention discloses methods for lowering leakage inductance of a pin transformer. The method comprises the steps of installing a jumping wire or a metal foil for connecting primary side pins and secondary side pins on a circuit board, wherein the jumping wire or the metal foil is arranged at the periphery of a transformer base; and when a wire outlet terminal of a coil of the transformer needs to cross from a primary side to a secondary side, the wire outlet terminal crossing through the jumping wire or the metal foil. In the prior art, the wire crosses through the top of an iron core of the transformer. Through adoption of the method, the structure in the prior art is changed, namely, a part of primary side pins and a part of second side pins are connected at the periphery of the transformer base, so that structural change of the wire crossing of the transformer is changed, leakage inductance of the transformer is greatly lowered, the quality of the transformer is improved, the material consumption is reduced, and the transformer cost is lowered.

Description

A kind of method reducing pin type transformer leakage inductance

Technical field

The present invention relates to transformer technology field, be specifically related to a kind of method reducing pin type transformer leakage inductance.

Background technology

Chinese patent ZL02149696.X discloses " winding method of Transformer for switching power source and coil windings thereof ", the coil that to be wherein the winding method of the coil windings of odd number (2Q+1) for the number of turn be in same position 180 degree of Rotational Symmetry coilings two (Q+0.5) numbers of turn, 0.5 circle is wherein non-integer circle number, namely half-turn, the input terminal of these two coil windings and outlet terminal are then in parallel respectively, form single coil windings.

As shown in Figure 1, the transformer for switching power supply of prior art is pin type transformer, two socket pins are arranged at the bottom of iron core bracket, two socket pins are inserted into when transformer is placed on wiring board in the welding hole of wiring board, wherein a row (the A row in Fig. 1) contact pin is used for the terminal of the coiling of connection transformer primary side, and another row (the B row in Fig. 1) contact pin is used for the terminal of connection transformer secondary side coiling.

Transformer as shown in Figure 2 needs coiling two to be with coiling N2 and N4 of half-turn at secondary side, therefore the leading-out terminal of N2 and N4 must appear at primary side, as shown in Figure 3 and Figure 4, the mode of prior art cabling is that the top making the primary side leading-out terminal of N2 and N4 stride across iron core turns back to secondary side, then the contact pin of connecting secondary side.

This mode from transformer core top cross-line has following defect:

1) add the leakage inductance of transformer, reduce the quality of transformer;

2) add material consumption, be unfavorable for reducing costs.

Summary of the invention

The technical problem to be solved in the present invention is, for the deficiencies in the prior art, provides a kind of method reducing pin type transformer leakage inductance, and overcoming prior art increases transformer leakage inductance from the mode of transformer core top cross-line, increase the defect of material consumption.

The present invention for solving the problems of the technologies described above adopted technical scheme is:

A kind of method reducing pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the leading-out terminal of the coiling of transformer needs to cross secondary side from primary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

A kind of method reducing pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the leading-out terminal of the coiling of transformer needs to cross primary side from secondary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

A kind of method reducing pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the end of incoming cables of the coiling of transformer needs to cross secondary side from primary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

A kind of method reducing pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the end of incoming cables of the coiling of transformer needs to cross primary side from secondary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

Implement technical scheme of the present invention, there is following beneficial effect: the present invention changes in the past from the structure of transformer core top cross-line, by mode part primary side contact pin and part secondary side contact pin linked together from the periphery of transformer base, realize the Structure innovation of transformer cross-line, greatly reduce the leakage inductance of transformer, improve the quality of transformer, and decrease material consumption, reduce transformer cost.

Accompanying drawing explanation

Below by with reference to accompanying drawing describe the present invention particularly in conjunction with example, advantage of the present invention and implementation will be more obvious, wherein content shown in accompanying drawing is only for explanation of the present invention, and does not form restriction of going up in all senses of the present invention, in the accompanying drawings:

Fig. 1 is prior art transformer base schematic diagram;

Fig. 2 is prior art is wound with the coiling of two band half-turns transformer circuit schematic diagram at secondary side;

Fig. 3 is prior art is wound with the coiling of two the band half-turns schematic diagram of transformer from iron core top cross-line at secondary side;

Fig. 4 is the vertical view of Fig. 3;

Fig. 5 is embodiment of the present invention transformer circuit schematic diagram;

Fig. 6 is embodiment of the present invention transformer base schematic diagram;

Fig. 7 is embodiment of the present invention transformer front view;

Fig. 8 is embodiment of the present invention transformer side view;

Fig. 9 is embodiment of the present invention transformer vertical view.

Embodiment

As shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, embodiments of the invention comprise following various execution mode:

(1) leading-out terminal crosses secondary side from primary side

The present invention reduces the method for pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the leading-out terminal of the coiling of transformer needs to cross secondary side from primary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

(2) leading-out terminal crosses primary side from secondary side

The present invention reduces the method for pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the leading-out terminal of the coiling of transformer needs to cross primary side from secondary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

(3) end of incoming cables crosses secondary side from primary side

The present invention reduces the method for pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the end of incoming cables of the coiling of transformer needs to cross secondary side from primary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

(4) end of incoming cables crosses primary side from secondary side

The present invention reduces the method for pin type transformer leakage inductance, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the end of incoming cables of the coiling of transformer needs to cross primary side from secondary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

As shown in Figure 5 and Figure 6, one end connecting contact pin 1 of coiling N2, the Same Name of Ends connecting contact pin 13 of coiling N4 and contact pin 14, in order to these two ends are linked together, by install on circuit boards transformer base position periphery arrange wire jumper or wiring board on Copper Foil 11 contact pin 1, contact pin 13 and contact pin 14 are linked together.The other end connecting contact pin 2 of coiling N2, the Same Name of Ends connecting contact pin 8 of coiling N4 and contact pin 9, in order to be linked together at these two ends, contact pin 2, contact pin 8 and contact pin 9 are linked together by the wire jumper arranged by the periphery of installing transformer base position on circuit boards or Copper Foil 11.

Those skilled in the art do not depart from essence of the present invention and spirit, various deformation scheme can be had to realize the present invention, the foregoing is only the better feasible embodiment of the present invention, not thereby interest field of the present invention is limited to, the equivalent structure change that all utilizations specification of the present invention and accompanying drawing content are done, is all contained within interest field of the present invention.

Claims

1. one kind is reduced the method for pin type transformer leakage inductance, it is characterized in that, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the leading-out terminal of the coiling of transformer needs to cross secondary side from primary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

2. one kind is reduced the method for pin type transformer leakage inductance, it is characterized in that, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the leading-out terminal of the coiling of transformer needs to cross primary side from secondary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

3. one kind is reduced the method for pin type transformer leakage inductance, it is characterized in that, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the end of incoming cables of the coiling of transformer needs to cross secondary side from primary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.

4. one kind is reduced the method for pin type transformer leakage inductance, it is characterized in that, comprise step: wire jumper or the metal forming of periphery setting for connecting primary side contact pin and secondary side contact pin that transformer base position is installed on circuit boards, when the end of incoming cables of the coiling of transformer needs to cross primary side from secondary side, described leading-out terminal realizes crossing over by described wire jumper or described metal forming.