CN206116158U - High -frequency transformer - Google Patents
High -frequency transformer Download PDFInfo
- Publication number
- CN206116158U CN206116158U CN201621216783.8U CN201621216783U CN206116158U CN 206116158 U CN206116158 U CN 206116158U CN 201621216783 U CN201621216783 U CN 201621216783U CN 206116158 U CN206116158 U CN 206116158U
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- Prior art keywords
- core
- magnetic core
- main magnetic
- leakage field
- frequency transformer
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- 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.)
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Abstract
The utility model discloses a high -frequency transformer, including skeleton, primary winding, secondary and main magnetic core, the skeleton includes two main magnetic core portions of holding, the outer wall of two main magnetic core portions of holding is elementary coiling portion and secondary coiling portion respectively, primary winding and secondary coiling respectively are in in elementary coiling portion and the secondary coiling portion, main magnetic core includes two winding magnetism posts, winding magnetism post is located respectively in two main magnetic core portions of holding, high -frequency transformer still includes the magnetic leakage core, the magnetic leakage core with article two, winding magnetism post parallel arrangement. Through setting up the magnetic leakage core, to the magnetic line of force production effect in primary winding, secondary and the main magnetic core among the high -frequency transformer, form the bypass magnetic circuit to increase the leakage inductance. When putting the resonant mode power into production, independent inductance be need not additionally set up, production processes and wiring complexity are reduced.
Description
Technical field
The utility model is related to field transformer, the transformer being more particularly to applied in high-frequency circuit.
Background technology
In high frequency switch power application, particularly in resonant transformation topology, need to use resonant inductance and transformer to coordinate.
Conventional method for designing has two kinds：
1. traditional transformer and independent resonant inductance are used, can so make power supply architecture complicated, volume increase, and
Make pcb board cabling complexity, electromagnetic interference big.Cause that product efficiency is low, volume big, high cost.
2. simply resonant inductance is integrated in transformer, used by increasing the leakage inductance of transformer and doing resonant inductance.
Generally by changing requirement of the distance between primary and secondary winding to change the leakage inductance of transformer to reach resonant inductance.Need compared with
Big leakage inductance, it is necessary to increase the distance between primary and secondary winding, can cause volume of transformer increasing, magnetic coupling ability, transformation
Device efficiency of transmission is low, and in the case where certain condition is limited, the scope that its leakage inductance can increase is extremely limited.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of combination resonant inductance (leakage inductance)
High frequency transformer, it can solve existing resonant mode power supply needs to set up separate inductor, and design is complicated, bulky problem.
Can solve existing limited by increasing the distance increase leakage inductance effect between primary and secondary winding, it is difficult to meet and apply required problem.
The purpose of this utility model employs the following technical solutions realization：
A kind of high frequency transformer, including skeleton, armature winding, secondary windings and main magnetic core；
The skeleton includes two main magnetic core receiving portions, and described two main magnetic core receiving portions are parallel to each other, described two masters
The outer wall of magnetic core receiving portion is respectively primary coiling portion and secondary coiling portion, and the armature winding and secondary windings are wound on respectively
In the primary coiling portion and secondary coiling portion；The main magnetic core includes two winding magnetic poles, two winding magnetic poles difference
In described two main magnetic core receiving portions；
The high frequency transformer also includes leakage field core, and the leakage field core be arranged in parallel with two winding magnetic poles；
The leakage field core is abutted against with the main magnetic core, and the leakage field core or main magnetic core also include side portion, the leakage field
Core and the side portion that the position that the main magnetic core is abutted against is the leakage field core or main magnetic core.
Preferably, sectional area of the sectional area of the winding magnetic pole more than the side portion.
Preferably, the skeleton also includes a leakage field core receiving portion, the leakage field core receiving portion and described two main magnetic
Core receiving portion be arranged in parallel, and the leakage field core is located in the leakage field core receiving portion.
Preferably, the first leakage inductance air gap is provided between the leakage field core and the main magnetic core.
Preferably, the leakage field core and main magnetic core are integral type structure, and the leakage field core shares side portion with main magnetic core；Institute
It is EE, EI, EC or PQ type combined magnet core that leakage field core is stated with the integral structure of main magnetic core composition.
Preferably, the main magnetic core is UU or UI type combined magnet cores, and the leakage field core is I type magnetic stripes, and the leakage field core holds
Portion is received between described two main magnetic core receiving portions.
Preferably, it is provided with the second leakage inductance air gap in the middle of the leakage field core.
Preferably, the leakage field core is FERRITE CORE, permalloy magnetic core, non-crystaline amorphous metal magnetic core, ultramicro-crystal alloy magnetic
Core, magnetic powder core, sendust core or iron silicon magnetic core.
Preferably, the main magnetic core receiving portion is circular, rectangle or square receiving portion, and the leakage field core receiving portion is circle
Shape, rectangle or square receiving portion.
Preferably, the skeleton is horizontal-type skeleton or vertical-type skeleton, and the skeleton also includes pin, the armature winding and
Secondary windings includes exit, and the exit is connected with the pin.
Compared to existing technology, the beneficial effects of the utility model are：By arranging leakage field core, to first in high frequency transformer
Magnetic line of force generation effect in level winding, secondary windings and main magnetic core, forms bypass magnetic circuit, so as to increase leakage inductance.It is humorous producing
Shake formula power supply when, without additionally arranging independent inductance, reduce production process and wiring complexity.
Description of the drawings
Fig. 1 is the decomposing schematic representation of the high frequency transformer that the utility model embodiment one is provided.
Fig. 2 is the decomposing schematic representation of the high frequency transformer that the utility model embodiment two is provided.
Fig. 3 is the decomposing schematic representation of the high frequency transformer that the utility model embodiment three is provided.
Fig. 4 is the structural representation of main magnetic core and leakage field core in the high frequency transformer that the utility model example IV is provided.
Specific embodiment
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature
Can become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Embodiment one：
High frequency transformer as shown in Figure 1, including skeleton 11, armature winding 12, secondary windings 13 and main magnetic core 14.Wherein
Skeleton 11 includes two main magnetic core receiving portions 111, and two main magnetic core receiving portions 111 are parallel to each other, two main magnetic core receiving portions 111
Outer wall be respectively primary coiling portion 112 and secondary coiling portion 113, armature winding 12 and secondary windings 13 are wound on respectively primary
In coiling portion 112 and secondary coiling portion 113；Corresponding, main magnetic core 14 includes two winding magnetic poles 141,142, winding magnetic pole 141
It is located at respectively in two main magnetic core receiving portions 111 with winding magnetic pole 142.In the present embodiment, main magnetic core 14 is UU type combined magnet cores,
In another embodiment, can be UI type combined magnet cores.Armature winding 12 and secondary windings 13 can be from enamel-covered wires, three-layer insulated
Select in the materials such as line, Copper Foil or PCB, fixing band can be further provided with outside armature winding 12 and secondary windings 13, and (figure is not
Show), for fixed insulation.
High frequency transformer also includes leakage field core 15, and leakage field core 15 be arranged in parallel with winding magnetic pole 141 and winding magnetic pole 142,
Preferably, in the present embodiment, leakage field core 15 is I type magnetic stripes, leakage field core 15 be located at winding magnetic pole 141 and winding magnetic pole 142 it
Between.
Leakage field core 15 is abutted against with main magnetic core 14, and main magnetic core 14 also includes side portion 143, leakage field core 15 and the phase of main magnetic core 14
The position of abutting is the side portion 143 of main magnetic core 14.
By arranging leakage field core 15, to the magnetic in armature winding in high frequency transformer 12, secondary windings 13 and main magnetic core 14
Line of force generation is acted on, and bypass magnetic circuit is formed, so as to increase leakage inductance.
Leakage field core 15 can be FERRITE CORE, permalloy magnetic core, non-crystaline amorphous metal magnetic core, ultramicro-crystal alloy magnetic core, iron
Powder magnetic core, sendust core or iron silicon magnetic core etc..
Further, make the sectional area of winding magnetic pole 141 more than the sectional area of side portion 143, the magnetic line of force can be made more
Leakage inductance is formed by bypassing magnetic circuit and air.
In the present embodiment, skeleton 11 is horizontal-type skeleton, can be vertical-type skeleton in other embodiment.Skeleton 11 also includes
Pin 115, the armature winding 12 and secondary windings 13 include exit (not shown), the exit and the pin 115
Connection.
Embodiment two：
High frequency transformer as shown in Figure 2, including skeleton 21, armature winding 22, secondary windings 23 and main magnetic core 24.Wherein
Skeleton 21 includes two main magnetic core receiving portions 211, and two main magnetic core receiving portions 211 are parallel to each other, two main magnetic core receiving portions 211
Outer wall be respectively primary coiling portion 212 and secondary coiling portion 213, armature winding 22 and secondary windings 23 are wound on respectively primary
In coiling portion 212 and secondary coiling portion 213；Corresponding, main magnetic core 24 includes two winding magnetic poles 241,242, winding magnetic pole 241
It is located at respectively in two main magnetic core receiving portions 211 with winding magnetic pole 242.
Skeleton 21 also includes a leakage field core receiving portion 214, leakage field core receiving portion 214 and two main magnetic core receiving portions 211
Arranged in parallel, (in another embodiment, leakage field core holds leakage field core receiving portion 214 between two main magnetic core receiving portions 211
Receiving portion 214 can be with one of two main magnetic core receiving portions 211 reversing of position).
High frequency transformer also includes leakage field core 25, and leakage field core 25 is parallel to each other with winding magnetic pole 241 and winding magnetic pole 242,
In the present embodiment, leakage field core 25 is I type magnetic stripes, and leakage field core 25 is located at the leakage field between winding magnetic pole 241 and winding magnetic pole 242
In core receiving portion 214.
Main magnetic core receiving portion 211 can be circular, rectangle or square receiving portion, and leakage field core receiving portion 214 can be for circle
Shape, rectangle or square receiving portion.
By arranging leakage field core 25, to the magnetic in armature winding in high frequency transformer 22, secondary windings 23 and main magnetic core 24
Line of force generation is acted on, and bypass magnetic circuit is formed, so as to increase leakage inductance.
Leakage field core 25 is abutted against with main magnetic core 24, and main magnetic core 24 also includes side portion 243, leakage field core 25 and the phase of main magnetic core 24
The position of abutting is the side portion 243 of main magnetic core 24.In the present embodiment, the first leakage inductance is provided between leakage field core 25 and main magnetic core 24
Air gap (or one end of leakage field core 25 is the first leakage inductance air gap, and the other end is fixed with side portion 243), further first leakage inductance gas
The first division board 251 is provided with gap, can further increase magnetic line of force leakage, increase leakage inductance.
Embodiment three：
High frequency transformer as shown in Figure 3, including skeleton 31, armature winding (not shown), secondary windings (not shown) and
Main magnetic core 34.Its middle skeleton 31 includes two main magnetic core receiving portions 311, and two main magnetic core receiving portions 311 are parallel to each other, two masters
The outer wall of magnetic core receiving portion 311 is respectively primary coiling portion 312 and secondary coiling portion 313, and armature winding and secondary windings are distinguished
It is wound in primary coiling portion 312 and secondary coiling portion 313；Corresponding, main magnetic core 34 includes two winding magnetic poles 341,342,
Winding magnetic pole 341 and winding magnetic pole 342 are located at respectively in two main magnetic core receiving portions 311.
High frequency transformer also includes leakage field core 35, and leakage field core 35 is parallel to each other and sets with winding magnetic pole 341 and winding magnetic pole 342
Put, winding magnetic pole 341, winding magnetic pole 342 and leakage field core 35 are arranged in order.In the present embodiment, leakage field core 35 and main magnetic core 34
For integral type structure, leakage field core 35 and main magnetic core 34 share side portion 343, and integral structure is EE type combined magnet cores, other realities
It can also be EI, EC or PQ type combined magnet core to apply in example.Integral type magnetic core can be in order to the manufacture of high frequency transformer.
Example IV：
Fig. 4 is the structural representation of a kind of main magnetic core and leakage field core, and main magnetic core 44 is tied with the integral type of the composition of leakage field core 45
Structure, is EE type combined magnet cores.Combined magnet core includes winding magnetic pole 441 and winding magnetic pole 442.In the leakage field core 45 of combined magnet core
Between set one second leakage inductance air gap 451, further, in the second leakage inductance air gap 451 the second division board (not shown) can be provided with, can be with
Further increase magnetic line of force leakage, increase leakage inductance.Preferably, the second leakage inductance air gap 451 can be E-type magnetic core as leakage field core 45
One arm construction, i.e. the arm is short compared with other two arms.In the present embodiment, this arm of E-type magnetic core centre is used as leakage field
A part for core 45, in another embodiment the one arm in the outside of E-type magnetic core as a part for leakage field core 45 (such as embodiment
Three), the second leakage inductance air gap 451 may also be arranged on the one arm on the outside of E-type magnetic core.
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the guarantor that should all belong to the utility model claim
Within the scope of shield.
Claims (10)
1. a kind of high frequency transformer, including skeleton, armature winding, secondary windings and main magnetic core, it is characterised in that：
The skeleton includes two main magnetic core receiving portions, and described two main magnetic core receiving portions are parallel to each other, described two main magnetic cores
The outer wall of receiving portion is respectively primary coiling portion and secondary coiling portion, and the armature winding and secondary windings are wound on respectively described
In primary coiling portion and secondary coiling portion；The main magnetic core includes two winding magnetic poles, and two winding magnetic poles are located at respectively
In described two main magnetic core receiving portions；
The high frequency transformer also includes leakage field core, and the leakage field core be arranged in parallel with two winding magnetic poles；
The leakage field core is abutted against with the main magnetic core, and the leakage field core or main magnetic core also include side portion, the leakage field core with
The position that the main magnetic core is abutted against is the side portion of the leakage field core or main magnetic core.
2. high frequency transformer as claimed in claim 1, it is characterised in that：The sectional area of the winding magnetic pole is more than the side
The sectional area in portion.
3. high frequency transformer as claimed in claim 1, it is characterised in that：The skeleton also includes a leakage field core receiving portion,
The leakage field core receiving portion be arranged in parallel with described two main magnetic core receiving portions, and the leakage field core is located at the leakage field core receiving portion
It is interior.
4. high frequency transformer as claimed in claim 1, it is characterised in that：Is provided between the leakage field core and the main magnetic core
One leakage inductance air gap.
5. the high frequency transformer as any one of claim 1-3, it is characterised in that：The leakage field core is one with main magnetic core
Body formula structure, the leakage field core shares side portion with main magnetic core；The integral structure of the leakage field core and main magnetic core composition be EE,
EI, EC or PQ type combined magnet core.
6. the high frequency transformer as any one of claim 1-4, it is characterised in that：The main magnetic core is UU or UI type groups
Magnetic core is closed, the leakage field core is I type magnetic stripes, and the leakage field core receiving portion is located between described two main magnetic core receiving portions.
7. the high frequency transformer as any one of claim 1-4, it is characterised in that：Second is provided with the middle of the leakage field core
Leakage inductance air gap.
8. the high frequency transformer as any one of claim 1-4, it is characterised in that：The leakage field core is ferrite magnetic
Core, permalloy magnetic core, non-crystaline amorphous metal magnetic core, ultramicro-crystal alloy magnetic core, magnetic powder core, sendust core or iron silicon magnetic core.
9. the high frequency transformer as any one of claim 1-4, it is characterised in that：The main magnetic core receiving portion is circle
Shape, rectangle or square receiving portion, the leakage field core receiving portion is circular, rectangle or square receiving portion.
10. the high frequency transformer as any one of claim 1-4, it is characterised in that：The skeleton be horizontal-type skeleton or
Vertical-type skeleton, the skeleton also includes pin, and the armature winding and secondary windings include exit, the exit with it is described
Pin connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216783.8U CN206116158U (en) | 2016-11-11 | 2016-11-11 | High -frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216783.8U CN206116158U (en) | 2016-11-11 | 2016-11-11 | High -frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206116158U true CN206116158U (en) | 2017-04-19 |
Family
ID=58526319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621216783.8U Withdrawn - After Issue CN206116158U (en) | 2016-11-11 | 2016-11-11 | High -frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206116158U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373751A (en) * | 2016-11-11 | 2017-02-01 | 深圳市莱福德光电有限公司 | High-frequency transformer |
| CN108039270A (en) * | 2017-11-17 | 2018-05-15 | 海宁联丰东进电子有限公司 | A kind of differential mode transformer altogether |
| CN110062715A (en) * | 2019-01-11 | 2019-07-26 | 广东美信科技股份有限公司 | A kind of new-energy automobile mobile transformer and new-energy automobile |
-
2016
- 2016-11-11 CN CN201621216783.8U patent/CN206116158U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373751A (en) * | 2016-11-11 | 2017-02-01 | 深圳市莱福德光电有限公司 | High-frequency transformer |
| CN108039270A (en) * | 2017-11-17 | 2018-05-15 | 海宁联丰东进电子有限公司 | A kind of differential mode transformer altogether |
| CN110062715A (en) * | 2019-01-11 | 2019-07-26 | 广东美信科技股份有限公司 | A kind of new-energy automobile mobile transformer and new-energy automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong province Shenzhen city Baoan District street Xixiang Development Zone guwu Indus Taihua Industrial Park building 14A building 4-5 Patentee after: Polytron Technologies Inc, Shenzhen Address before: 518000 Guangdong province Shenzhen city Baoan District street Xixiang Development Zone guwu Indus Taihua Industrial Park building 14A building 4-5 Patentee before: Shenzhen Ledfriend Optoelectronics Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170419 Effective date of abandoning: 20181113 |
|
| AV01 | Patent right actively abandoned |