CN205666127U - Flyback switching power supply transformer - Google Patents

Flyback switching power supply transformer Download PDF

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Publication number
CN205666127U
CN205666127U CN201620596721.8U CN201620596721U CN205666127U CN 205666127 U CN205666127 U CN 205666127U CN 201620596721 U CN201620596721 U CN 201620596721U CN 205666127 U CN205666127 U CN 205666127U
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CN
China
Prior art keywords
winding
insulating layer
layer
copper foil
skeleton
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620596721.8U
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Chinese (zh)
Inventor
代圣平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ya Yuan Technology (yichang) Electronics Co Ltd
Original Assignee
Ya Yuan Technology (yichang) Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ya Yuan Technology (yichang) Electronics Co Ltd filed Critical Ya Yuan Technology (yichang) Electronics Co Ltd
Priority to CN201620596721.8U priority Critical patent/CN205666127U/en
Application granted granted Critical
Publication of CN205666127U publication Critical patent/CN205666127U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a contain skeleton and magnetic core, the magnetic core is installed on the skeleton, still includes primary winding and secondary on the skeleton, and primary winding contains first winding and secondary winding, is equipped with a monolayer insulating layer, first shielding layer, a multilayered insulating layer, secondary, the 2nd multilayered insulating layer, secondary shielding layer, the 2nd monolayer insulating layer between first winding and the secondary winding in proper order, secondary is double -line coiling structure, the one side of keeping away from a monolayer insulating layer at first winding still is equipped with the 3rd monolayer insulating layer, an auxiliary winding, fourth monolayer insulating layer, the 2nd auxiliary winding and the 3rd multilayered insulating layer in proper order, first winding and secondary winding polarity identical, and the initiating terminal of secondary winding is continuous with first winding's tail end, an auxiliary winding, the 2nd auxiliary winding and first winding's polarity identical, the utility model has the advantages of the leakage inductance of transformer is little, and the withstand voltage is high.

Description

A kind of inverse-excitation type switch power-supply transformator
Technical field
This utility model relates to a kind of switching mode power supply transformer, is specifically related to a kind of inverse-excitation type switch power-supply transformator.
Background technology
Inverse-excitation type switch power-supply transformator can be applicable to use in the constant-pressure type of reverse excitation circuit, constant-current type Switching Power Supply, Energy storage, energy conversion etc. is provided for all kinds of inverse-excitation type switch power-supplies;And due to flyback transformer except conventional transformation around Group is outer further comprises auxiliary winding or feedback winding, and owing to there is radiation interference between winding, inappropriate screen layer arranges and can increase Add leakage inductance and the distribution capacity of transformator, and the pressure design to transformator that increases of winding is challenged, it is therefore necessary to carry Go out a kind of low leakage inductance, high pressure inverse-excitation type switch power-supply transformator.
Utility model content
For the deficiency in the presence of prior art, this utility model provides a kind of inverse-excitation type switch power-supply transformator.
For achieving the above object, this utility model have employed following technical scheme:
A kind of inverse-excitation type switch power-supply transformator, comprises skeleton and magnetic core, and described magnetic core is arranged on skeleton, on skeleton Also include armature winding and secondary windings, described armature winding comprise the first identical winding of number of coils and second around Group, is sequentially provided with the first monolayer insulating layer, the first screen layer, the first multilayer insulation between the first described winding and the second winding Layer, secondary windings, the second multilayer dielectric layer, secondary shielding layer, the second monolayer insulating layer;Described secondary windings is two-wire coiling Structure;The first winding away from the side of the first monolayer insulating layer be also sequentially provided with the 3rd monolayer insulating layer, the first auxiliary winding, 4th monolayer insulating layer, the second auxiliary winding and the 3rd multilayer dielectric layer;The first described winding and the second winding polarity phase With, and the tail end of the initiating terminal of the second winding and the first winding is connected;Described first auxiliary winding, the second auxiliary winding and first The polarity of winding is identical, and the tail end of the initiating terminal of the second auxiliary winding and the first auxiliary winding is connected;Described secondary windings Polarity and the opposite polarity of the first winding.
Further, the first described screen layer and secondary shielding layer comprise copper foil and shield dielectric layer, described copper Foil edge exceeds the first winding or the second winding marginal dimension 0.5~1mm, the wherein one side of copper foil and the surrounding of copper foil Edge is fully wrapped around by shield dielectric layer, and the another side that copper foil is not completely wrapped is single against the first monolayer insulating layer or second Layer insulating.
Further, described copper foil is connected to ground outlet, and described ground outlet is socketed with insulation tube.
Further, described first multilayer dielectric layer, the second multilayer dielectric layer, the 3rd multilayer dielectric layer the insulation number of plies equal It it is three layers.
Further, described skeleton is additionally provided with barricade by each winding side, for limit between winding and skeleton away from From, to improve the resistance to pressure of transformator, safety and reliability.
This utility model is by arranging opposite polarity secondary windings and first between the first winding and the second winding Screen layer, the setting of secondary shielding layer so that the leakage inductance of transformator reduces;Use big as screen layer and copper foil of copper foil Little setting ensure that making convenient the most again can effectively interference between shield winding, and compare other shielding mode transformators Leakage inductance is less;The current potential making screen layer is remained to zero potential by the ground outlet of copper foil, improves the shielding of screen layer Effect;On the other hand, on the premise of fully ensuring that insulation effect, for monolayer insulating layer and multilayer dielectric layer layout and The setting of shield dielectric layer achieves the optimization of production cost and insulating properties, improves transformator under limited production cost Pressure voltage.
Compared to prior art, this utility model has the advantages that the leakage inductance of transformator is low, and pressure voltage is high, increases Add the ability of transformator suppression EMI interference.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the first screen layer and the structural representation of secondary shielding layer
Detailed description of the invention
Below in conjunction with the accompanying drawings and the technical scheme in this utility model is further illustrated by embodiment.
As it is shown in figure 1, the utility model proposes a kind of inverse-excitation type switch power-supply transformator, comprise skeleton 1 and magnetic core, institute The magnetic core stated is arranged on skeleton 1, and skeleton 1 also includes armature winding and secondary windings, and described armature winding comprises line The first winding 12 and the second winding 2 that number of turns amount is identical, is sequentially provided with first between described the first winding 12 and the second winding 2 Monolayer insulating layer the 6, first screen layer the 13, first multilayer dielectric layer 14, secondary windings the 5, second multilayer dielectric layer 15, secondary shielding Layer the 16, second monolayer insulating layer 3;Described secondary windings 5 is two-wire winding structure, had both been provided that two groups of outputs, and also can reduce The leakage inductance of transformator;The first winding 12 away from the side of the first monolayer insulating layer 6 be also sequentially provided with the 3rd monolayer insulating layer 7, First auxiliary winding the 8, the 4th monolayer insulating layer 9, second assists winding 11 and the 3rd multilayer dielectric layer 10;Described first around Group 12 is identical with the second winding 2 polarity, and the tail end of the initiating terminal of the second winding 2 and the first winding 12 is connected;Described first auxiliary Help winding 8, second to assist winding 11 identical with the polarity of the first winding 12, and second assists the initiating terminal of winding 11 and first auxiliary The tail end helping winding 8 is connected;The polarity of described secondary windings 5 and the opposite polarity of the first winding 12.
As shown in Figures 1 and 2, the first described screen layer 13 and secondary shielding layer 16 comprise copper foil 4 and shielding insulation Layer 18, described copper foil 4 edge exceeds the first winding 12 or the second winding 2 marginal dimension 0.5~1mm, and copper foil 4 is wherein One side is the most fully wrapped around by shield dielectric layer 18 with the edge of copper foil 4, another side that copper foil 4 is not completely wrapped against First monolayer insulating layer 6 or the second monolayer insulating layer 3;Described copper foil 4 is connected to ground outlet 20, and described ground connection is drawn Line 20 is socketed with insulation tube 19.
The insulation number of plies of described first multilayer dielectric layer the 14, second multilayer dielectric layer the 15, the 3rd multilayer dielectric layer 10 is Three layers.
Described skeleton 1 is additionally provided with barricade 17 by each winding side, for limiting the distance between each winding and skeleton, with Improve the resistance to pressure of transformator, safety and reliability
This utility model is by arranging opposite polarity secondary windings and first between the first winding and the second winding Screen layer, the setting of secondary shielding layer so that the leakage inductance of transformator reduces;Use big as screen layer and copper foil of copper foil Little setting ensure that making convenient the most again can effectively interference between shield winding, and compare other shielding mode transformators Leakage inductance is less;The current potential making screen layer is remained to zero potential by the ground outlet of copper foil, improves the shielding of screen layer Effect;On the other hand, on the premise of fully ensuring that insulation effect, for monolayer insulating layer and multilayer dielectric layer layout and The setting of shield dielectric layer achieves the optimization of production cost and insulating properties, improves transformator under limited production cost Pressure voltage.
Finally illustrating, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although ginseng According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent, without deviating from objective and the model of technical solutions of the utility model Enclosing, it all should be contained in the middle of right of the present utility model.

Claims (5)

1. an inverse-excitation type switch power-supply transformator, comprises skeleton and magnetic core, and described magnetic core is arranged on skeleton, on skeleton also Include armature winding and secondary windings, it is characterised in that: described armature winding comprises the first winding that number of coils is identical With the second winding, be sequentially provided with between the first described winding and the second winding the first monolayer insulating layer, the first screen layer, first Multilayer dielectric layer, secondary windings, the second multilayer dielectric layer, secondary shielding layer, the second monolayer insulating layer;Described secondary windings is Two-wire winding structure;The first winding away from the side of the first monolayer insulating layer be also sequentially provided with the 3rd monolayer insulating layer, first Auxiliary winding, the 4th monolayer insulating layer, the second auxiliary winding and the 3rd multilayer dielectric layer;The first described winding and second around Group polarity is identical, and the tail end of the initiating terminal of the second winding and the first winding is connected;Described first auxiliary winding, second auxiliary around Organize identical with the polarity of the first winding, and the tail end of the initiating terminal of the second auxiliary winding and the first auxiliary winding is connected;Described time The polarity of level winding and the opposite polarity of the first winding.
A kind of inverse-excitation type switch power-supply transformator the most according to claim 1, it is characterised in that: the first described screen layer And secondary shielding layer comprises copper foil and shield dielectric layer, described copper foil edge exceeds the first winding or the second winding edge Size 0.5~1mm, the wherein one side of copper foil is fully wrapped around by shield dielectric layer with the edge of copper foil, and copper foil is not The another side being completely wrapped is against the first monolayer insulating layer or the second monolayer insulating layer.
A kind of inverse-excitation type switch power-supply transformator the most according to claim 2, it is characterised in that: described copper foil is connected to Ground outlet, described ground outlet is socketed with insulation tube.
A kind of inverse-excitation type switch power-supply transformator the most according to claim 1 and 2, it is characterised in that: described first multilamellar Insulating barrier, the second multilayer dielectric layer, the insulation number of plies of the 3rd multilayer dielectric layer are three layers.
A kind of inverse-excitation type switch power-supply transformator the most according to claim 1 and 2, it is characterised in that: described skeleton leans on Each winding side is additionally provided with barricade, for limiting the distance between winding and skeleton.
CN201620596721.8U 2016-06-16 2016-06-16 Flyback switching power supply transformer Expired - Fee Related CN205666127U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620596721.8U CN205666127U (en) 2016-06-16 2016-06-16 Flyback switching power supply transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620596721.8U CN205666127U (en) 2016-06-16 2016-06-16 Flyback switching power supply transformer

Publications (1)

Publication Number Publication Date
CN205666127U true CN205666127U (en) 2016-10-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620596721.8U Expired - Fee Related CN205666127U (en) 2016-06-16 2016-06-16 Flyback switching power supply transformer

Country Status (1)

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CN (1) CN205666127U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106783099A (en) * 2017-03-30 2017-05-31 深圳创维数字技术有限公司 A kind of transformer and power supply adaptor
CN109473265A (en) * 2018-10-15 2019-03-15 珠海市崧源电子企业有限公司 A kind of transformer and assemble method
CN110112925A (en) * 2019-05-30 2019-08-09 深圳创维数字技术有限公司 Primary side feedback reverse exciting switching voltage regulator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106783099A (en) * 2017-03-30 2017-05-31 深圳创维数字技术有限公司 A kind of transformer and power supply adaptor
CN109473265A (en) * 2018-10-15 2019-03-15 珠海市崧源电子企业有限公司 A kind of transformer and assemble method
CN109473265B (en) * 2018-10-15 2021-03-19 珠海市崧源电子企业有限公司 Transformer and assembling method
CN110112925A (en) * 2019-05-30 2019-08-09 深圳创维数字技术有限公司 Primary side feedback reverse exciting switching voltage regulator

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20161026

Termination date: 20180616

CF01 Termination of patent right due to non-payment of annual fee