CN206471205U - A kind of adjustable flat surface transformer - Google Patents
A kind of adjustable flat surface transformer Download PDFInfo
- Publication number
- CN206471205U CN206471205U CN201621156505.8U CN201621156505U CN206471205U CN 206471205 U CN206471205 U CN 206471205U CN 201621156505 U CN201621156505 U CN 201621156505U CN 206471205 U CN206471205 U CN 206471205U
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- Prior art keywords
- plate
- flat surface
- copper foil
- winding
- guide plate
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Abstract
The utility model discloses a kind of adjustable flat surface transformer, including core assembly and winding assembly；Core assembly is a pair of magnetic cores that there is mutually correspondence laminating to constitute a solid core component；Winding assembly is integral by PCB windings plate, sandwich plate and guide plate stacking, and the center section of winding assembly offers through hole, and magnetic core is bonded to each other through through hole, and constitutes complete flat surface transformer with winding assembly.The utility model proposes adjustable flat surface transformer, one layer of guide plate is covered on traditional PCB winding plates, the guide plate is provided with copper foil salient point, copper foil salient point is contacted with the copper circuit laminating on PCB winding plates, change the turn ratio of flat surface transformer using the winding number of rings of copper foil salient point formation, so as to change the no-load voltage ratio of flat surface transformer, simultaneously, produce the flat surface transformer of this kind of adjustable no-load voltage ratio, a guide plate is only added during primary plane transformer production, and the guide plate is improved on the basis of PCB printed panels.
Description
Technical field
The utility model belongs to transformer technology field, more particularly to a kind of adjustable flat surface transformer and its manufacturer
Method.
Background technology
In order to adapt to the requirement of energy-conservation and environmental protection, microelectronic circuit is using increasingly lower operating voltage, to require
The energy being lost in circuit is fewer and fewer.The current lower supply voltage of this court and smaller transformation promptly changes
Become supply and the packing technique of power supply.On the other hand, because direct-current switch power supply is towards compact development, with power
Semiconductor and signal semiconductor devices become less and less, how to reduce the work(due to playing the part of pivotal player in power system
Rate magnetic device appearance and size becomes most important.Because the miniaturization of power transformer and inductor is maximum difficult point, one
All by the common concern of domestic and international brainstrust since straight.
Flat surface transformer is a kind of new ferrite inductance element, is electronics because flat surface transformer is suitable for plane attachment
Product realizes the major product of frivolous miniaturization.Compared with conventional transformer, flat surface transformer not only has the advantage in structure,
But also have power density height, efficiency high, the low, thermal diffusivity that leaks electricity good and low cost and other advantages.With electronic technology not
Disconnected development, the application of flat surface transformer is rapidly spread to notebook computer, automotive electronics, medical treatment from single communication field
Electronics, security system, Industry Control, digital camera, digital to television, frequency converter, inverter, various AC/DC, DC/DC conversion
The multiple fields such as device and military radar.
Compared with traditional transformer uses copper conductor as winding coil, because the winding coil of flat surface transformer is used
Be double-layer printing circuit board or be prefabricated into the copper coin of plane and constitute, the exploitation as well as planar magnetic core obtains success,
So as to which the design of transformer of planarization is achieved.While power density is greatly enhanced, volume but greatly reduces,
The 20% of conventional transformer is only equivalent to, so the thickness of flat surface transformer is far below traditional transformer, it is only equivalent to
20% to 40% height.Due to the various clear superiorities of flat surface transformer, replace tradition is skeleton to become using flat surface transformer
Depressor is one of development trend of current switch power supply.
Existing flat surface transformer (especially high current, high power occasion), mostly using copper sheet as original/vice-side winding,
Multiple this windings are stacked, transformer is then constituted together with magnetic core.Because current flat surface transformer structure is set
Meter is complex, and flat surface transformer forms fixation in structure, therefore, and existing plane no-load voltage ratio is fixed, and many should
It is required to flexibly be used using the no-load voltage ratio of transformer with occasion, only with current fixation no-load voltage ratio flat surface transformer, more
Change use cost high, change be required to pay man power and material every time, under this application environment, the versatility of flat surface transformer
Difference, application is narrower, it is impossible to which extensive progress popularization is used, and constrains the popularization and application of flat surface transformer.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of adjustable flat surface transformer, including core assembly
And winding assembly；Core assembly is a pair of magnetic cores that there is mutually correspondence laminating to constitute a solid core component；Winding assembly
Integral by PCB windings plate, sandwich plate and guide plate stacking, the center section of winding assembly offers through hole, and magnetic core runs through
Through hole is bonded to each other, and constitutes complete flat surface transformer with winding assembly.The utility model proposes adjustable flat surface transformer,
One layer of guide plate is covered on traditional PCB winding plates, the guide plate is provided with copper foil salient point, copper foil salient point and PCB winding plates
The laminating contact of copper circuit, the winding number of rings using the formation of copper foil salient point changes the turn ratio of flat surface transformer, so as to change
Become the no-load voltage ratio of flat surface transformer, meanwhile, the flat surface transformer of this kind of adjustable no-load voltage ratio is produced, only in primary plane transformer production mistake
A guide plate is added in journey, and the guide plate is improved on the basis of PCB printed panels.
The utility model solves technical problem, and the technical scheme used is：A kind of adjustable flat surface transformer, including magnetic
Core assembly and winding assembly, the magnetic core that the core assembly can mutually correspond to laminating by a pair are constituted, and the magnetic core includes bottom
Plate, the stem being arranged in the middle part of bottom plate and the crossbeam for being arranged on bottom plate both sides；Winding assembly is by PCB windings plate, sandwich plate and leads
Corbel back slab, which is stacked, turns into an entirety, is laid with PCB winding plates in the circle around shape around copper foil circuit, in winding assembly
Between partly offer through hole, it is bonded to each other after the through hole that the stems of two pieces of magnetic cores is extended through in the middle of winding assembly from two ends；
The PCB windings plate includes armature winding plate and secondary windings plate, and the sandwich plate has polylith, is separately positioned on
Between armature winding plate and secondary windings plate, and between core assembly and winding assembly；
The guide plate has polylith, the outside of armature winding plate and secondary windings plate is mounted on respectively, on guide plate
Provided with multiple copper foil salient points, the copper foil salient point is electrically connected with the circle laid on PCB winding plates around copper foil circuit.
Further, the winding assembly is successively by sandwich plate, guide plate, armature winding plate, sandwich plate, secondary windings
Plate, guide plate and sandwich plate, which are stacked, to be constituted.
It is preferred that, the circle is laid on armature winding plate and secondary windings plate around copper foil circuit insertion, in armature winding
The center section of plate and secondary windings plate offers a through hole, is offered on sandwich plate and guide plate relative with the through hole
The shape and size of the stem of the through hole answered, the through hole and magnetic core match, stem can completely through sandwich plate, guide plate, just
The through hole opened up in the middle part of level winding plate and secondary windings plate.
Further, the circle set on armature winding plate and secondary windings plate is provided with around the two ends of copper foil circuit
Contact point, the contact point draws PCB winding plates by wire or conductor, and the exit of the contact point is used as flat surface transformer
Terminals.
Above-mentioned adjustable flat surface transformer, the sandwich plate be for separating armature winding plate and secondary windings plate, and
The insulation board of core assembly and winding assembly.
Multiple copper foil salient points on above-mentioned adjustable flat surface transformer, guide plate, are correspondingly arranged at circle every around copper foil circuit
The knee of one ring, copper foil salient point is in close contact with circle around the knee of copper foil circuit.
It is preferred that, the guide plate is provided with terminals, and each copper foil salient point one terminals of corresponding connection, copper foil is convex
The corresponding terminals electrical connection of point.
Compared with prior art, the utility model has the advantages that：The utility model proposes one kind can adjust
Flat surface transformer, covers one layer of guide plate again on traditional PCB winding plates, and the guide plate is provided with substantial amounts of copper foil salient point, copper
Paper tinsel salient point is contacted with the copper foil circuit laminating on PCB winding plates, using the winding number of rings of copper foil salient point everywhere, is become to change plane
The turn ratio of depressor, reaches the no-load voltage ratio for changing flat surface transformer, meanwhile, the flat surface transformer of this kind of adjustable no-load voltage ratio is produced, only
One piece of guide plate is added only in the production process of original flat surface transformer, and the guide plate changes on the basis of PCB printed panels
Enter, therefore, manufacturing process is simple, using minimum cost, produces the adjustable plane transformer of high performance-price ratio, carries significantly
The high level of production technology and production technology.
Brief description of the drawings
Fig. 1 is the schematic, exploded perspective view for showing the transformer according to the utility model exemplary embodiment；
Fig. 2 is the schematic side elevation for showing the transformer according to the utility model exemplary embodiment；
Fig. 3 is to show the hardened composition of PCB windings according to the transformer of the utility model exemplary embodiment；
Fig. 4 is to show the guide plate structure chart according to the transformer of the utility model exemplary embodiment；
Fig. 5 is to show the transformer manufacturing method flow diagram according to the utility model exemplary embodiment.
In figure：1st, core assembly, 2, winding assembly, 3, PCB winding plates, 4, sandwich plate, 5, guide plate, 6, through hole, 7, just
Level winding plate, 8, secondary windings plate, 9, copper foil salient point, 10, crossbeam, 11, stem, 12, enclose around copper foil circuit, 13, terminals.
Embodiment
The utility model is described further below in conjunction with accompanying drawing：
Fig. 1 to Fig. 4 is referred to, the present invention provides a kind of adjustable flat surface transformer, including core assembly 1 and winding assembly
2, the magnetic core that core assembly 1 can mutually correspond to laminating by a pair is constituted, and the magnetic core includes bottom plate, is arranged in the middle part of bottom plate
Stem 11 and the crossbeam 10 for being arranged on bottom plate both sides；Winding assembly 2 is stacked by PCB windings plate 3, sandwich plate 4 and guide plate 5 to be turned into
One entirety, is laid with the circle around shape around copper foil circuit 12, the center section of winding assembly 2 is opened up on PCB windings plate 3
There is a through hole 6, it is bonded to each other after the through hole 6 that the stems 11 of two pieces of magnetic cores is extended through in the middle of winding assembly 2 from two ends；The PCB
Winding plate 3 includes armature winding plate 7 and secondary windings plate 8, and the sandwich plate 4 has polylith, and sandwich plate 4 is insulation insulating course,
It is separately positioned between armature winding plate 7 and secondary windings plate 8, and between core assembly 1 and winding assembly 2；The guiding
Plate 5 has polylith, and the outside of armature winding plate 7 and secondary windings plate 8 is mounted on respectively, and multiple copper foils are provided with guide plate 5
Salient point 9, the copper foil salient point 9 is electrically connected with the circle laid on PCB windings plate 3 around copper foil circuit 12.
Winding assembly 2 is successively by sandwich plate 4, guide plate 5, armature winding plate 7, sandwich plate 4, secondary windings plate 8, guide plate
5 and sandwich plate 4 stack and constitute, each plate body is overlapped mutually, is adhesively fixed by bonding agent, or fixes folded by core assembly 1
It is added together, winding plate is superimposed upon the magnetic loop that transformer is constituted on the high-frequency core of plane, can meet the design of resonance circuit
It is required that, and due to the good magnetic screen of magnetic core, Radio frequency interference can be suppressed.
The magnetic core of flat surface transformer uses E types, RM types or the ring-like FERRITE CORE of small size, excellent in the present embodiment
E-type magnetic core is first used, the height of magnetic core preferably is 0.1cm-10cm, core length preferably is 1cm-20cm, magnetic preferably
Core length is 1cm-15cm, is typically to be made up of high-frequency power ferrite material, there is relatively low core loss in high frequency.
In the present embodiment, circle is laid on armature winding plate 7 and secondary windings plate 8 around the insertion of copper foil circuit 12,
The center section of armature winding plate 7 and secondary windings plate 8 offers a through hole 6, is opened up on sandwich plate 4 and guide plate 5
There is the through hole corresponding with the through hole 6, the shape and size of the through hole 6 and the stem 11 of magnetic core match, stem 11 can be completely
The through hole 6 opened up through sandwich plate 4, guide plate 5, armature winding plate 7 and the middle part of secondary windings plate 8.
In the present embodiment, the armature winding plate 7 and secondary windings plate 8 of PCB windings plate 3 are constituted using multi-sheet printed
Circuit board is repeatedly around into winding or copper sheet change and the magnetic loop of transformer constituted on the high-frequency core of plane, and the design has
The low resistance of direct current copper, low leakage inductance and distribution capacity, can meet the design requirement of resonance circuit, and due to the good magnetic of magnetic core
Shielding, can suppress Radio frequency interference.
In the present embodiment, head and the tail of the circle set on armature winding plate 7 and secondary windings plate 8 around copper foil circuit 12
End is provided with contact point, and the contact point draws PCB windings plate 3, the exit conduct of the contact point by wire or conductor
The terminals 13 of flat surface transformer.The sandwich plate 4 is for separating armature winding plate 7 and secondary windings plate 8, and magnetic core group
The insulation board of part 1 and winding assembly 2, sandwich plate 4 preferably uses insulation resin sheet.
In the present embodiment, multiple copper foil salient points 9 on guide plate 5, are correspondingly arranged at circle each around copper foil circuit 12
The knee of ring, copper foil salient point 9 is in close contact with circle around the knee of copper foil circuit 12.Terminals 13 are provided with guide plate 5,
Each one terminals 13 of corresponding connection of copper foil salient point 9, the corresponding terminals electrical connection of copper foil salient point 9.When guide plate 5
When being superimposed laminating with PCB windings plate 3, copper foil salient point 9 is in close contact with circle around the knee of copper circuit 12, each copper foil salient point 9
Drawn by wire, the coil that the copper foil salient point 9 of inner ring contains is fewer, therefore no-load voltage ratio is also with regard to smaller, the copper foil salient point 9 of outer ring
The coil contained is more, therefore no-load voltage ratio is also bigger.
PCB windings plate 3 can save winding skeleton, and energy increasing heat radiation area can reduce in high-frequency work by kelvin effect
With the eddy-current loss caused by kindred effect, it can also increase current density, its current density reaches as high as 20A/mm2, power is big,
Technique is simple, has preferable window utilization rate using pcb board, up to 0.25~0.3, and has the advantages that small volume；PCB types
Its power of transformer may be up to 20kW, and frequency is up to megahertz order of magnitude；Using pulse planar technique, multi-layer PCB is clipped in magnetic core
Between, thin and efficient ferrite flat surface transformer, its bottom area is small, height only have 7.4mm, working frequency be 150~
750kHz, operating temperature is -400~1300 DEG C.
Referring to Fig. 5, a kind of adjustable flat surface transformer, its manufacture method comprises the following steps：
S1：The all parts of processing and fabricating core assembly 1 and winding assembly 2；
S2：Laminating assembling is carried out to the sandwich plate 4 in winding assembly 2, guide plate 5, PCB windings plate 3, constitute it is complete around
Group component 2；PCB windings plate 3 carries out array loop circuit printing, the circuitry shapes and plate-like of printing using circuit board printing technology
The structure of mosquito-repellent incense is similar；The PCB windings plate 3 and guide plate 5 fit assembling when, by the copper foil salient point 9 on guide plate 5 and
The knee correspondence contact connection of copper circuit, after the completion of PCB windings plate 3 is fitted with guide plate 5, should be led on PCB windings plate 3
Next step assembling is carried out after electric test, pass the test again；
S3：The core assembly 1 machined and the winding assembly 2 being completed are subjected to technique assembling, constituted completely
Flat surface transformer；Core assembly 1 is fixedly mounted on the outside of winding assembly 2, while core assembly 1 has admittedly to winding assembly 2
Fixed effect, when each half storey in winding assembly 2 by be adhesively fixed connection after, core assembly 1 is further to winding assembly 2
Play fixation；
S4：The flat surface transformer that is completed carries out test adjustment, the test adjustment content be transformer operating efficiency,
Leakage inductance, heat transfer, working frequency, operating temperature and insulating properties, wherein operating efficiency reach 99%, leakage inductance less than 0.1%, heat
Conduction is good, the KHz of working frequency 50 to 20 megahertzs, operating temperature -60 to 150 DEG C and 10000V is dielectrically separated from, and adjusts
Examination completes packaging and storage.
The PCB windings plate 3 and guide plate 5 fit assembling when, need to by the copper foil salient point 9 on guide plate 5 and PCB around
The knee correspondence contact connection of copper circuit, after the completion of PCB windings plate 3 is fitted with guide plate 5, need to carry out energization examination on group plate 3
Test, carry out next step assembling after pass the test again.
In summary, a kind of adjustable flat surface transformer of the invention, in one layer of covering on traditional PCB windings plate 3
Guide plate 5, the guide plate 5 is provided with substantial amounts of copper foil salient point 9, and copper foil salient point 9 is fitted with the copper circuit on PCB windings plate 3 and connect
Touch, using the winding number of rings of copper foil salient point 9 everywhere, to change the turn ratio of flat surface transformer, reach and change flat surface transformer
No-load voltage ratio, meanwhile, the flat surface transformer of this kind of adjustable no-load voltage ratio is produced, is only added in the production process of original flat surface transformer
One piece of guide plate 5, and the guide plate 5 improves on the basis of PCB printed panels, therefore, manufacturing process is simple, using minimum
Cost, produce the adjustable plane transformer of high performance-price ratio, substantially increase the level of production technology and production technology.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of adjustable flat surface transformer, including core assembly (1) and winding assembly (2)；
The magnetic core that core assembly (1) can mutually correspond to laminating by a pair is constituted, and the magnetic core includes bottom plate, set in the soleplate
The stem (11) in portion and the crossbeam (10) for being arranged on bottom plate both sides；
Winding assembly (2), being stacked by PCB windings plate (3), sandwich plate (4) and guide plate (5) turns into an entirety, in PCB windings
It is laid with plate (3) in the circle around shape around copper foil circuit (12), the center section of winding assembly (2) offers through hole (6), two
The through hole (6) that the stem (11) of block magnetic core is extended through from two ends in the middle of winding assembly (2) is bonded to each other afterwards；
The PCB windings plate (3) includes armature winding plate (7) and secondary windings plate (8), and the sandwich plate (4) has polylith, point
It is not arranged between armature winding plate (7) and secondary windings plate (8), and between core assembly (1) and winding assembly (2)；Its
It is characterised by：
The guide plate (5) has polylith, and the outside of armature winding plate (7) and secondary windings plate (8) is mounted on respectively, in guiding
Plate (5) is provided with the circle laid on multiple copper foil salient points (9), the copper foil salient point (9) and PCB windings plate (3) around copper foil circuit
(12) electrically connect；
Multiple copper foil salient points (9) on the guide plate (5), are correspondingly arranged at bending of the circle around copper foil circuit (12) each ring
Place, copper foil salient point (9) is in close contact with circle around the knee of copper foil circuit (12)；
The guide plate (5) is provided with terminals (13), each copper foil salient point (9) one terminals (13) of corresponding connection, copper
Corresponding terminals (13) electrical connection of paper tinsel salient point (9).
2. a kind of adjustable flat surface transformer according to claim 1, it is characterised in that：The winding assembly (2) is successively
By sandwich plate (4), guide plate (5), armature winding plate (7), sandwich plate (4), secondary windings plate (8), guide plate (5) and sandwich plate
(4) stack and constitute.
3. a kind of adjustable flat surface transformer according to claim 1, it is characterised in that：The sandwich plate (4) be for
Separate armature winding plate (7) with secondary windings plate (8), and core assembly (1) and winding assembly (2) insulation board.
4. a kind of adjustable flat surface transformer according to claim 1, it is characterised in that：Magnetic core uses E type ferrite magnetic
Core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156505.8U CN206471205U (en) | 2016-10-31 | 2016-10-31 | A kind of adjustable flat surface transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156505.8U CN206471205U (en) | 2016-10-31 | 2016-10-31 | A kind of adjustable flat surface transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471205U true CN206471205U (en) | 2017-09-05 |
Family
ID=59709020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621156505.8U Expired - Fee Related CN206471205U (en) | 2016-10-31 | 2016-10-31 | A kind of adjustable flat surface transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206471205U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933434A (en) * | 2020-08-10 | 2020-11-13 | 西安电子科技大学 | Planar transformer |
| CN113628851A (en) * | 2020-05-07 | 2021-11-09 | 台达电子企业管理（上海）有限公司 | Winding assembly and magnetic element |
-
2016
- 2016-10-31 CN CN201621156505.8U patent/CN206471205U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628851A (en) * | 2020-05-07 | 2021-11-09 | 台达电子企业管理（上海）有限公司 | Winding assembly and magnetic element |
| CN113628851B (en) * | 2020-05-07 | 2024-01-23 | 台达电子企业管理（上海）有限公司 | Winding assembly and magnetic element |
| CN111933434A (en) * | 2020-08-10 | 2020-11-13 | 西安电子科技大学 | Planar transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20181031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |