CN209312562U - Transformer - Google Patents
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- CN209312562U CN209312562U CN201822143948.9U CN201822143948U CN209312562U CN 209312562 U CN209312562 U CN 209312562U CN 201822143948 U CN201822143948 U CN 201822143948U CN 209312562 U CN209312562 U CN 209312562U
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- winding
- armature winding
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- armature
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- 238000004804 winding Methods 0.000 claims abstract description 154
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011889 copper foil Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 63
- 239000011229 interlayer Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to a kind of transformers, the first armature winding, secondary windings and the second armature winding that the transformer includes: winding bobbin and is successively wound around on the winding bobbin, the coil winding number of plies of first armature winding grade, second armature winding is at least 2 layers respectively, it is connected in parallel between at least 2 layer line circles that first armature winding includes, is connected in parallel between at least 2 layer line circles that the second armature winding includes.
Description
Technical field
The utility model relates to switch power technology field more particularly to a kind of transformers.
Background technique
Switching Power Supply is the time ratio that control switch pipe turns on and off using modern power electronics technology, remains steady
Determine a kind of power supply of output voltage.Transformer is one of most critical device of Switching Power Supply, and transformer generally comprises armature winding
Winding and secondary coil winding, armature winding winding and secondary coil winding can around being set as sandwich formats or along wound,
But existing sandwich formats or be easy to form differential-mode current in interlayer distribution capacity along wound, differential-mode current is switch
The interference source of powered electromagnetic compatible (Electro Magnetic Compatibility, EMC).
Utility model content
In view of the above-mentioned problems, it is necessary to provide a kind of transformers that can overcome above-mentioned technical problem.
A kind of transformer, comprising: winding bobbin and the first armature winding being successively wound around on the winding bobbin, secondary
The coil winding number of plies of grade winding and the second armature winding, first armature winding and second armature winding is respectively extremely
Less it is 2 layers, is connected in parallel between at least 2 layer line circles that the first armature winding includes, at least 2 layer lines that the second armature winding includes
It is connected in parallel between circle.
Preferably, at least 2 layer line circles that the first armature winding includes are 2 layers, at least 2 layer lines that the second armature winding includes
Circle is 2 layers.
Preferably, be provided with first screen layer between first armature winding and the secondary windings, it is described it is secondary around
Secondary shielding layer is provided between group and the second armature winding.
Preferably, the first screen layer is copper foil shielding layer, and the secondary shielding layer is enameled wire shield winding.
Preferably, secondary accessory power supply winding is also arranged between the secondary windings and the secondary shielding layer.
Preferably, winding primary accessory power supply winding is gone back outside second armature winding.
Preferably, between first armature winding and first screen layer, between first screen layer and secondary windings, secondary
Insulating tape is respectively arranged between winding and secondary shielding layer, between secondary shielding layer and the second armature winding.
Preferably, first armature winding and the second armature winding are enamel-cover line winding group.
Preferably, first armature winding is connect with power input, and second armature winding is connect with metal-oxide-semiconductor.
The transformer includes the first armature winding and second armature winding, first armature winding with it is described
The coil winding number of plies of second armature winding is at least 2 layers respectively, parallel connection between at least 2 layer line circles that the first armature winding includes
It connects, is connected in parallel between at least 2 layer line circles that the second armature winding includes, in this way, there is no voltage difference between coil in parallel,
Coil interlayer will not generate differential-mode current, to reduce the interference source of Switching Power Supply electromagnetism compatible (EMC), improve Switching Power Supply
EMC。
Detailed description of the invention
Fig. 1 is the cross-sectional view of one better embodiment transformer winding of the utility model.
Fig. 2 is the schematic illustration of the transformer of Fig. 1.
Fig. 3 be between the coil for the armature winding that transformer includes in the prior art using after tandem-type connection, opening of being formed
The Electro Magnetic Compatibility signal imitation curve graph in powered-down source.
Fig. 4 be between the coil for the armature winding that the transformer of Fig. 1 includes using after parallel connection method, the Switching Power Supply that is formed
Electro Magnetic Compatibility signal imitation curve graph.
Main element symbol description
Transformer 100
First armature winding 20
Coil layer N1, N2, N5, N6
Primary accessory power supply winding N7
Secondary accessory power supply winding N4
Winding bobbin 10
Secondary windings N3
Second armature winding 40
Secondary shielding layer E2
First screen layer E1
Insulating tape 50
The following detailed description will be further explained with reference to the above drawings the utility model.
Specific embodiment
Keep the purpose of this utility model, technical solution and the advantage clearer, in the following with reference to the drawings and specific embodiments
Clear, complete description is carried out to the utility model.Obviously, described embodiment is only that the utility model a part is implemented
Example, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "upper", "lower" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
Any and all combinations of one or more related listed items.
Fig. 1 and Fig. 2 is please referred to, one embodiment of the utility model provides a kind of transformer 100.It is provided by the utility model
Transformer 100 can be widely applied to various switching mode power supply transformers and the Switching Power Supply with transformer.The transformer 100 wraps
It includes: winding bobbin 10 and the first armature winding 20 being successively wound around on the winding bobbin 10, secondary windings N3 and
Two armature windings 40.First armature winding 20, secondary windings N3 and the second armature winding 40 are enamel-cover line winding group.Using
Enamel-cover line winding group can satisfy the insulation performance requirement of transformer.First armature winding 20, secondary windings N3 and second are primary
Winding 40 forms sandwich coiling form, and each winding wire packet is smooth, so that coil be facilitated to automate coiling.
In the present embodiment, the winding bobbin 10 of the transformer 100 is specially thermal hardening plastics skeleton.The heat is hard
Changing plastics can be phenolic resin.In this way, the winding bobbin 10 is able to bear welding temperature and indeformable.
At least 2 layers respectively of the coil winding number of plies of first armature winding 20 and second armature winding 30, the
It is connected in parallel between at least 2 layer line circles that one armature winding 20 includes, between at least 2 layer line circles that the second armature winding includes simultaneously
Connection connection.
In the present embodiment, at least 2 layer line circles that the first armature winding 20 includes are preferably 2 layers.Second armature winding
The 30 at least 2 layer line circles for including are preferably also 2 layers.First armature winding 20 is designed as 2 layers, is because winding includes multilayer
When, it is the successively close coiling from inner layer to outer layer with spiral shape centered on winding bobbin, in every adjacent inside and outside two layers of coil,
The coil diameter of outer layer is the diameter slightly larger than its adjacent inner coil, and when the winding number of plies is excessive, the coil of innermost layer is used
Line length is significantly less than outermost coil line length, in this way, will lead to the coil and outermost coil of innermost layer
Electric current have big difference, be easy to produce differential-mode current.It is basic through winding, the length of coil using 2 layer line circles in the technical program
Or it is consistent, so, it is ensured that size of current is approximate consistent in coil.Second armature winding 30 is designed as 2 layers, and reason is also such as
This.
By between 2 coil layers N1 and N2 that the first armature winding 20 includes to be connected in parallel, by the second armature winding 40
Including 2 coil layers N5 and N6 between to be connected in parallel, and coil layer N2 and N5 phase is contacted and is connect.In this way, coil layer N1 and line
There is no voltage difference between ring layer N2, coil layer N1 and N2 interlayer will not generate differential-mode current, similarly, coil N5 and coil N6 interlayer
Differential-mode current will not be generated, to reduce the interference source of Switching Power Supply electromagnetism compatible (EMC), improves Switching Power Supply EMC.
Also referring to Fig. 3 and Fig. 4.Fig. 3 be the armature winding that transformer includes in the prior art coil between use
After tandem-type connection, formed Switching Power Supply Electro Magnetic Compatibility signal imitation curve graph.Fig. 4 is that the transformer 100 of this case includes
Armature winding coil between using after parallel connection method, the Electro Magnetic Compatibility signal imitation curve graph of Switching Power Supply that is formed.
The of the Electro Magnetic Compatibility for the Switching Power Supply that the transformer 100 of this case is formed without departing from average value namely the transformer of this case 100
Between the 2 layer line circles that one armature winding includes, between the 2 layer line circles that the second armature winding includes be by shape in parallel respectively
At Switching Power Supply Electro Magnetic Compatibility be substantially better than tandem-type connection after, the Electro Magnetic Compatibility of Switching Power Supply that is formed.
First screen layer E1, the secondary windings are provided between first armature winding 20 and the secondary windings N3
Secondary shielding layer E2 is provided between N3 and the second armature winding 40.It can be inhibited by first screen layer E1 and secondary shielding layer E2
The noise that transformer generates, such as nonlinear noise, electric network noise and thermal noise.
In the present embodiment, first screen layer E1 is copper foil shielding layer, and secondary shielding layer E2 is enameled wire shield winding.
So set, being in order to ensure the common mode current of the first armature winding 20 to secondary windings N3 is shielded to by first screen layer E1
Ground improves working efficiency and the safety of Switching Power Supply.
Secondary accessory power supply winding N4 is also arranged between the secondary windings N3 and the secondary shielding layer E2.Described
Also winding primary accessory power supply winding N7 outside two armature windings 40.The secondary accessory power supply winding N4 and primary accessory power supply around
Group N7 is respectively used to the power supply for primary chip (not shown) and secondary chip (not shown).
Between first armature winding 20 and first screen layer E1, between first screen layer E1 and secondary windings N3, it is secondary
Insulating tape is respectively arranged between grade winding N3 and secondary shielding layer E2, between secondary shielding layer E2 and the second armature winding 40
50.Insulating tape 50 is that wheat draws adhesive tape or copper foil tape.Insulating tape 50 can play the role of insulation or signal shielding isolation.
First armature winding 20 is connect with power input Vin, and second armature winding is connect with metal-oxide-semiconductor.MOS
Pipe is equivalent to a switch under the control of chip, the DC power supply of power input Vin can be converted to AC power source, into
And alternating voltage is converted to by the transformer 100.
In conclusion the transformer 100 includes the first armature winding 10 and second armature winding, described first
The coil winding number of plies of armature winding and second armature winding is at least 2 layers respectively, the first armature winding include at least 2
It is connected in parallel between layer line circle, is connected in parallel between at least 2 layer line circles that the second armature winding includes, in this way, coil in parallel
Between there is no voltage difference, coil interlayer will not generate differential-mode current, to reduce the interference of Switching Power Supply electromagnetism compatible (EMC)
Source improves Switching Power Supply EMC.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of transformer, comprising: winding bobbin and the first armature winding being successively wound around on the winding bobbin, secondary
Winding and the second armature winding, it is characterised in that: the coil winding of first armature winding and second armature winding
The number of plies is at least 2 layers respectively, is connected in parallel between at least 2 layer line circles that the first armature winding includes, the second armature winding includes
At least 2 layer line circles between be connected in parallel.
2. transformer as described in claim 1, it is characterised in that: at least 2 layer line circles that the first armature winding includes are 2 layers,
At least 2 layer line circles that second armature winding includes are 2 layers.
3. transformer as described in claim 1, it is characterised in that: set between first armature winding and the secondary windings
It is equipped with first screen layer, is provided with secondary shielding layer between the secondary windings and the second armature winding.
4. transformer as claimed in claim 3, it is characterised in that: first screen layer is copper foil shielding layer, and secondary shielding layer is
Enameled wire shield winding.
5. transformer as claimed in claim 4, it is characterised in that: between the secondary windings and the secondary shielding layer also around
Equipped with secondary accessory power supply winding.
6. transformer as claimed in claim 5, it is characterised in that: go back winding primary accessory power supply outside second armature winding
Winding.
7. transformer as claimed in claim 6, it is characterised in that: between first armature winding and first screen layer,
Between one shielded layer and secondary windings, between secondary windings and secondary shielding layer, between secondary shielding layer and the second armature winding
It is respectively arranged with insulating tape.
8. transformer as claimed in claim 7, it is characterised in that: first armature winding and the second armature winding are paint
Envelope curve winding.
9. transformer as described in claim 1, it is characterised in that: first armature winding is connect with power input, institute
The second armature winding is stated to connect with metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822143948.9U CN209312562U (en) | 2018-12-19 | 2018-12-19 | Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822143948.9U CN209312562U (en) | 2018-12-19 | 2018-12-19 | Transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209312562U true CN209312562U (en) | 2019-08-27 |
Family
ID=67677752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822143948.9U Active CN209312562U (en) | 2018-12-19 | 2018-12-19 | Transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209312562U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312489A (en) * | 2020-02-20 | 2020-06-19 | 连云港杰瑞电子有限公司 | Transformer winding arrangement method and displacement current numerical analysis method thereof |
| CN112818500A (en) * | 2019-11-15 | 2021-05-18 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Visual modeling method for transformer winding |
-
2018
- 2018-12-19 CN CN201822143948.9U patent/CN209312562U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112818500A (en) * | 2019-11-15 | 2021-05-18 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Visual modeling method for transformer winding |
| CN111312489A (en) * | 2020-02-20 | 2020-06-19 | 连云港杰瑞电子有限公司 | Transformer winding arrangement method and displacement current numerical analysis method thereof |
| CN111312489B (en) * | 2020-02-20 | 2021-08-17 | 连云港杰瑞电子有限公司 | Transformer winding arrangement method and displacement current numerical analysis method thereof |
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