CN105405607B - A kind of method and transformer and power supply for reducing pin type transformer leakage inductance - Google Patents
A kind of method and transformer and power supply for reducing pin type transformer leakage inductance Download PDFInfo
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- CN105405607B CN105405607B CN201510875238.3A CN201510875238A CN105405607B CN 105405607 B CN105405607 B CN 105405607B CN 201510875238 A CN201510875238 A CN 201510875238A CN 105405607 B CN105405607 B CN 105405607B
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Abstract
The invention discloses a kind of method and transformer and power supply for reducing pin type transformer leakage inductance, method includes step：When primary side of the leading-out terminal needs of the coiling of transformer from side crosses the secondary side of opposite side, leading-out terminal, which passes through from the bottom trace of transformer core, realizes leap.Pin type transformer includes base and the iron core being arranged on the base, base is provided with row's primary side contact pin and row's secondary side contact pin, and at least first contact pin for the primary side of side is connected by least second contact pin for the metal foil on wire jumper or wiring board and the secondary side of opposite side.Described pin type transformer is provided with power supply of the present invention.The present invention greatly reduces the leakage inductance of transformer, improves the quality of transformer, and reduces material consumption, reduces transformer cost.
Description
Technical field
The present invention relates to transformer technology field, and in particular to a kind of method and transformation for reducing pin type transformer leakage inductance
Device and power supply.
Background technology
Chinese patent ZL02149696.X discloses " the coiling side of Transformer for switching power source and its coil windings
Method ", wherein the winding method for the coil windings that the number of turn is odd number (2Q+1) is in same position 180 degree rotational symmetry coiling
The coil of two (Q+0.5) numbers of turn, 0.5 circle therein is non-integer circle number, that is, half-turn, the end of incoming cables of the two coil windings
Son and outlet terminal and then respectively parallel connection, form single coil windings.
As shown in figure 1, the transformer for switching power supply of prior art is pin type transformer, the bottom of iron core bracket has two
Socket pin, two socket pins are inserted into the welding hole of wiring board when transformer is placed on wiring board, wherein a row (A in Fig. 1
Row) contact pin is used for the terminal that connects the coiling of transformer primary side, and another row (the B rows in Fig. 1) contact pin, which is used to connect, to be become
The terminal of depressor secondary side coiling.
Transformer as shown in Figure 2 needs coiling N2 and N4 of the coiling two with half-turn in secondary side, thus N2 and
N4 leading-out terminal necessarily occurs at primary side, and as shown in Figure 3 and Figure 4, the mode of prior art cabling is to make N2 and N4 once
Side leading-out terminal reconnects the contact pin of secondary side across secondary side is returned at the top of iron core.
This mode from cross-line at the top of transformer core has following defect：
1) leakage inductance of transformer is added, reduces the quality of transformer；
2) material consumption is added, is unfavorable for reducing cost.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, there is provided one kind reduces pin type transformation
The method and transformer and power supply of device leakage inductance, prior art is overcome to increase transformer from the mode of cross-line at the top of transformer core
The defects of leakage inductance, increase material consumption.
The present invention is that technical scheme is used by solving above-mentioned technical problem：
A kind of method for reducing pin type transformer leakage inductance, including step：The leading-out terminal of the coiling of transformer needs
When crossing the secondary side of opposite side from the primary side of side, the leading-out terminal from the bottom trace of transformer core by realizing
Across.
According to an embodiment of the invention, the leading-out terminal is connected at least first contact pin for the primary side of side, the
One contact pin connects at least the one of the secondary side of opposite side by the metal foil on the wire jumper or circuit board of transformer bottom
The contact pin of root second.
A kind of method for reducing pin type transformer leakage inductance, including step：The leading-out terminal of the coiling of transformer needs
When crossing the primary side of opposite side from the secondary side of side, the leading-out terminal from the bottom trace of transformer core by realizing
Across.
According to an embodiment of the invention, the leading-out terminal is connected to the first contact pin of the secondary side of at least one side, the
One contact pin connects at least the one of the primary side of opposite side by the metal foil on the wire jumper or circuit board of transformer bottom
The contact pin of root second.
A kind of method for reducing pin type transformer leakage inductance, including step：The end of incoming cables of the coiling of transformer needs
When crossing the secondary side of opposite side from the primary side of side, the end of incoming cables from the bottom trace of transformer core by realizing
Across.
According to an embodiment of the invention, the end of incoming cables is connected to the first contact pin of the primary side of at least one side, the
One contact pin connects at least the one of the secondary side of opposite side by the metal foil on the wire jumper or circuit board of transformer bottom
The contact pin of root second.
A kind of method for reducing pin type transformer leakage inductance, including step：The end of incoming cables of the coiling of transformer needs
When crossing the primary side of opposite side from the secondary side of side, the end of incoming cables from the bottom trace of transformer core by realizing
Across.
According to an embodiment of the invention, the end of incoming cables is connected at least first contact pin for the secondary side of side, the
One contact pin connects at least the one of the primary side of opposite side by the metal foil on the wire jumper or circuit board of transformer bottom
The contact pin of root second.
A kind of low drain sense pin type transformer, including base and the iron core being arranged on the base, the base setting
There are row's primary side contact pin and row's secondary side contact pin, at least first contact pin for the primary side of side passes through wire jumper or line
At least the second contact pin connection of the secondary side of metal foil and opposite side on the plate of road.
According to an embodiment of the invention, the end of incoming cables at least one coil being wound on the iron core or leading-out terminal connect
Connect the first contact pin or the second contact pin.
A kind of power supply, at least one as above any described low drain sense pin type transformer is provided with the power supply.
Implement technical scheme, have the advantages that：The present invention is changed in the past from transformer core top
The structure of portion's cross-line, pass through the side that the secondary side contact pin of the primary side contact pin of part side and part opposite side links together
Formula, the Structure innovation from transformer core bottom cross-line is realized, greatly reduce the leakage inductance of transformer, improve the product of transformer
Matter, and reduce material consumption, reduce transformer cost.
Brief description of the drawings
The present invention is specifically described below with reference to accompanying drawing and with reference to example, advantages of the present invention and implementation will
More obvious, wherein content is only used for explanation of the present invention shown in accompanying drawing, without forming to the present invention in all senses
On limitation, in the accompanying drawings：
Fig. 1 is prior art transformer base schematic diagram；
Fig. 2 is the transformer circuit schematic diagram that prior art is wound with two coilings with half-turn in secondary side；
Fig. 3 is that prior art is wound with the transformers of two coilings with the half-turn cross-line at the top of iron core in secondary side
Schematic diagram；
Fig. 4 is Fig. 3 top view；
Fig. 5 is transformer circuit schematic diagram of the embodiment of the present invention；
Fig. 6 is transformer base schematic diagram of the embodiment of the present invention；
Fig. 7 is transformer front view of the embodiment of the present invention；
Fig. 8 is transformer side view of the embodiment of the present invention；
Fig. 9 is transformer top view of the embodiment of the present invention.
Embodiment
As shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, embodiments of the invention include following various embodiments：
(1) leading-out terminal crosses secondary side from primary side
The method that the present invention reduces pin type transformer leakage inductance, including step：The leading-out terminal of the coiling of transformer needs
When crossing the secondary side of opposite side from the primary side of side, leading-out terminal by from the bottom trace of transformer core realize across
More.It is specific to lead to across at least first contact pin, the first contact pin that mode be the primary side that leading-out terminal is connected to side
At least one second of the secondary side for the metal foil connection opposite side crossed on the wire jumper or circuit board of transformer bottom inserts
Pin.
(2) leading-out terminal crosses primary side from secondary side
The method that the present invention reduces pin type transformer leakage inductance, including step：The leading-out terminal of the coiling of transformer needs
When crossing the primary side of opposite side from the secondary side of side, leading-out terminal by from the bottom trace of transformer core realize across
More.Specific to cross over the first contact pin that mode be the secondary side that leading-out terminal is connected at least one side, the first contact pin leads to
At least one second of the primary side for the metal foil connection opposite side crossed on the wire jumper or circuit board of transformer bottom inserts
Pin.
(3) end of incoming cables crosses secondary side from primary side
The method that the present invention reduces pin type transformer leakage inductance, including step：The end of incoming cables of the coiling of transformer needs
When crossing the secondary side of opposite side from the primary side of side, end of incoming cables by from the bottom trace of transformer core realize across
More.Specific to cross over the first contact pin that mode be the primary side that end of incoming cables is connected at least one side, the first contact pin leads to
At least one second of the secondary side for the metal foil connection opposite side crossed on the wire jumper or circuit board of transformer bottom inserts
Pin.
(4) end of incoming cables crosses primary side from secondary side
The method that the present invention reduces pin type transformer leakage inductance, including step：The end of incoming cables of the coiling of transformer needs
When crossing the primary side of opposite side from the secondary side of side, end of incoming cables by from the bottom trace of transformer core realize across
More.It is specific to lead to across at least first contact pin, the first contact pin that mode be the secondary side that end of incoming cables is connected to side
At least one second of the primary side for the metal foil connection opposite side crossed on the wire jumper or circuit board of transformer bottom inserts
Pin.
It is corresponding to the method for undershoot needle-like transformer leakage inductance of the present invention, low drain sense pin type transformer of the present invention, including bottom
Seat and the iron core that is arranged on the base, base are provided with row's primary side contact pin and row's secondary side contact pin, and the one of side
At least first contact pin for secondary side pass through the metal foil on wire jumper or wiring board and the secondary side of opposite side at least one
Second contact pin connects.According to an embodiment of the invention, the end of incoming cables at least one coil being wound on iron core or leading-out terminal
Connect the first contact pin or the second contact pin.Metal foil can be copper foil or silver foil.
It is corresponding to the method for undershoot needle-like transformer leakage inductance of the present invention and low drain sense pin type transformer of the present invention, this hair
At least one as above any described low drain sense pin type transformer is provided with bright power supply.It is appreciated that any one is set
It is standby to be such as provided with low drain sense pin type transformer of the present invention, still fall within protection scope of the present invention.
As shown in Figure 5 and Figure 6, coiling N2 one end connecting contact pin 1, coiling N4 Same Name of Ends connecting contact pin 13
With contact pin 14, in order to which the both ends are linked together, by the copper foil 11 on the wire jumper or wiring board below base by contact pin
1st, contact pin 13 and contact pin 14 link together.Coiling N2 other end connecting contact pin 2, coiling N4 Same Name of Ends connection
Contact pin 8 and contact pin 9, will by the copper foil 11 on the wire jumper or wiring board below base in order to which the both ends are linked together
Contact pin 2, contact pin 8 and contact pin 9 link together.
Table 1 is the test comparison report from the transformer and the transformer leakage inductance from transformer bottom cross-line of cross-line at the top of iron core
Accuse, it can be seen that the present invention greatly reduces transformer leakage inductance from the transformer of transformer bottom cross-line, achieve very well
Technique effect.
Table 1
Those skilled in the art do not depart from the essence and spirit of the present invention, can have various deformation scheme to realize the present invention,
Preferably feasible embodiment of the invention is the foregoing is only, not thereby limits to the interest field of the present invention, it is all with this
The equivalent structure change that description of the invention and accompanying drawing content are made, is both contained within the interest field of the present invention.
Claims (6)
- A kind of 1. method for reducing pin type transformer leakage inductance, it is characterised in that including step：The coiling of transformer goes out When line end needs the primary side from side to cross the secondary side of opposite side, the leading-out terminal is by from the bottom of transformer core Cabling, which is realized, to be crossed over, and the leading-out terminal is connected at least first contact pin for the primary side of side, the first contact pin by positioned at At least second contact pin for the secondary side of metal foil connection opposite side on the wire jumper or circuit board of transformer bottom.
- A kind of 2. method for reducing pin type transformer leakage inductance, it is characterised in that including step：The coiling of transformer goes out When line end needs the secondary side from side to cross the primary side of opposite side, the leading-out terminal is by from the bottom of transformer core Cabling, which is realized, to be crossed over, and the leading-out terminal is connected to the first contact pin of the secondary side of at least one side, the first contact pin by positioned at At least second contact pin for the primary side of metal foil connection opposite side on the wire jumper or circuit board of transformer bottom.
- A kind of 3. method for reducing pin type transformer leakage inductance, it is characterised in that including step：The coiling of transformer enters When line end needs the primary side from side to cross the secondary side of opposite side, the end of incoming cables is by from the bottom of transformer core Cabling, which is realized, to be crossed over, and the end of incoming cables is connected to the first contact pin of the primary side of at least one side, the first contact pin by positioned at At least second contact pin for the secondary side of metal foil connection opposite side on the wire jumper or circuit board of transformer bottom.
- A kind of 4. method for reducing pin type transformer leakage inductance, it is characterised in that including step：The coiling of transformer enters When line end needs the secondary side from side to cross the primary side of opposite side, the end of incoming cables is by from the bottom of transformer core Cabling, which is realized, to be crossed over, and the end of incoming cables is connected at least first contact pin for the secondary side of side, the first contact pin by positioned at At least second contact pin for the primary side of metal foil connection opposite side on the wire jumper or circuit board of transformer bottom.
- A kind of 5. low drain sense pin type transformer, it is characterised in that：It is described including base and the iron core being arranged on the base Base is provided with row's primary side contact pin and row's secondary side contact pin, and at least first contact pin for the primary side of side passes through jump At least the second contact pin connection of the secondary side of metal foil and opposite side on line or wiring board, the wire jumper or described Metal foil on wiring board from transformer core bottom trace, the end of incoming cables at least one coil being wound on the iron core or Person's leading-out terminal connects the first contact pin or the second contact pin.
- A kind of 6. power supply, it is characterised in that：At least one low drain sense contact pin as claimed in claim 5 is provided with the power supply Type transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875238.3A CN105405607B (en) | 2015-12-03 | 2015-12-03 | A kind of method and transformer and power supply for reducing pin type transformer leakage inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875238.3A CN105405607B (en) | 2015-12-03 | 2015-12-03 | A kind of method and transformer and power supply for reducing pin type transformer leakage inductance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105405607A CN105405607A (en) | 2016-03-16 |
| CN105405607B true CN105405607B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510875238.3A Active CN105405607B (en) | 2015-12-03 | 2015-12-03 | A kind of method and transformer and power supply for reducing pin type transformer leakage inductance |
Country Status (1)
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3445213B2 (en) * | 2000-02-16 | 2003-09-08 | 株式会社タムラ製作所 | Power transformer |
| CN201489973U (en) * | 2009-09-08 | 2010-05-26 | 快特电波股份有限公司 | High-frequency magnetic element and bobbin bracket thereof |
| CN102779627A (en) * | 2012-07-30 | 2012-11-14 | 昆山达功电子有限公司 | Induction coil winding structure |
| CN203826180U (en) * | 2014-05-19 | 2014-09-10 | 东莞市嘉龙海杰电子科技有限公司 | Winding structure for primary winding of transformer |
| CN205194486U (en) * | 2015-12-03 | 2016-04-27 | 刘国泉 | Low leakage inductance transformer and power |
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| CN105405607A (en) | 2016-03-16 |
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Address after: Room 1108, block A, Xinghe residence, Diamond Mountain, Kowloon, Hongkong, China Patentee after: Liu Guoquan Address before: Room 1108, block A, Xinghe residence, Diamond Mountain, Kowloon, Hongkong, China Patentee before: Liu Guoquan |