CN209216714U - A kind of flat surface transformer and power supply - Google Patents
A kind of flat surface transformer and power supply Download PDFInfo
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- CN209216714U CN209216714U CN201920009815.4U CN201920009815U CN209216714U CN 209216714 U CN209216714 U CN 209216714U CN 201920009815 U CN201920009815 U CN 201920009815U CN 209216714 U CN209216714 U CN 209216714U
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- magnetic core
- flat surface
- transformer
- surface transformer
- winding
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Abstract
The utility model relates to switch power technology fields, in particular to a kind of flat surface transformer and power supply.The utility model provides the flat surface transformer in a kind of Switching Power Supply, which includes: magnetic core and the PCB winding that is wrapped on the magnetic core center pillar, which includes multiple partially flat EE type magnetic core groups；The PCB winding is adhesively fixed with the magnetic core using bonded adhesives；The range of copper wire diameter in the PCB winding is 3-10 ounces.The technical solution of the application, the copper wire diameter range of PCB winding are 3-10 ounces, can reduce skin effect, improve the utilization rate of winding.And PCB winding is used, since winding is to be integrally formed, when use, only needs to be directly sleeved on the center pillar of magnetic core, and it is easy for installation, it is convenient for large batch of production, to also improve the efficiency of production transformer, shortens the time of assembling transformer.
Description
Technical field
The utility model relates to switch power technology fields, in particular to a kind of flat surface transformer and power supply.
Background technique
With electronic circuit, module switch power supply is defeated to high frequency, high power density, high reliability, high integration development
Voltage is a variety of out, and to DC power supply, more stringent requirements are proposed.It is high switching frequency, low-loss, high power, modularization, highly integrated
Change, flattening are the development trends of DC power supply.In order to better meet above to module switch power requirement, generally
By the way of forward converter, but the leakage inductance and distribution capacity of the traditional transformer in general Switching Power Supply, volume is big, temperature
It increases, thus produces debugging to actual Switching Power Supply batch and bringing very big difficulty, in addition the structure of traditional transformer has been
It is unfavorable for radiating, so Switching Power Supply is difficult to realize, high frequency, low-loss, high power be close, modular development trend.
Utility model content
In view of this, the transformer and power supply being designed to provide in a kind of Switching Power Supply of the embodiment of the present application, reach
Heat dissipation is reduced, the effect of power volume is reduced.
In a first aspect, the embodiment of the present application provides a kind of transformer, comprising: magnetic core and the center pillar for being wrapped in the magnetic core
On PCB winding, the magnetic core includes multiple partially flat EE type magnetic core groups；The PCB winding and the magnetic core using bonded adhesives into
Row is adhesively fixed；The range of copper wire diameter in the PCB winding is 3-10 ounces.
With reference to first aspect, the embodiment of the present application provides the first possible embodiment of first aspect, in which:
The working frequency of the partially flat EE type magnetic core is 20KHz-1MHz.
With reference to first aspect, the embodiment of the present application provides second of possible embodiment of first aspect, in which: every
A partially flat EE type magnetic core group is that two partially flat EE type magnetic core docking are constituted；Dock pair of the two partially flat EE type magnetic cores constituted
Junction is adhesively fixed by bonded adhesives.
With reference to first aspect, the embodiment of the present application provides the third possible embodiment of first aspect, in which: also
Including the two-sided heat-conducting glue band for radiating and fixing the flat surface transformer, the two-sided heat-conducting glue band is pasted onto the magnetic core
Bottom.
With reference to first aspect, the embodiment of the present application provides the 4th kind of possible embodiment of first aspect, in which: also
Including four L-type pins for radiating and fixing the transformer, four L type pin is arranged in the magnetic core bottom.
With reference to first aspect, the embodiment of the present application provides the 5th kind of possible embodiment of first aspect, in which: institute
Four L-type pins and the two-sided heat-conducting glue band are stated in same level.
With reference to first aspect, the embodiment of the present application provides the 6th kind of possible embodiment of first aspect, in which: institute
The range for stating the copper wire diameter in PCB winding is 4-6 ounces.
With reference to first aspect, the embodiment of the present application provides the 7th kind of possible embodiment of first aspect, in which: institute
The surface for stating PCB winding is provided with the mark of the flat surface transformer for distinguishing different model.
Second aspect, this application provides a kind of Switching Power Supplies, including above-mentioned transformer.
In conjunction with second aspect, the embodiment of the present application provides the first possible embodiment of second aspect, wherein also
Including the rectification circuit being connected with the output end of the transformer, the output of the rectification circuit is as the defeated of the Switching Power Supply
Out.
Transformer provided by the embodiments of the present application, magnetic core made of multiple partially flat EE type magnetic core docking；It is wrapped in the magnetic
PCB winding on core center pillar, the PCB winding are adhesively fixed with the magnetic core using bonded adhesives；In the PCB winding
The range of copper wire diameter is 3-10 ounces.The technical solution of the application, the copper wire diameter range of PCB winding are 3-10 ounces, can
To reduce skin effect.Improve the utilization rate of winding.And PCB winding is used, since winding is to be integrally formed, when use only
It needs to be directly sleeved on the center pillar of magnetic core, it is easy for installation, it is convenient for large batch of production, to also improve the effect of production transformer
Rate shortens the time of assembling transformer.
Further, transformer provided by the embodiments of the present application, the low-loss power FERRITE CORE production of 20KHz-1MHz,
To meet the requirement of Switching Power Supply 20KHz-500KHz.
Further, transformer provided by the embodiments of the present application, transformer can guarantee transformation using the installation of L-type pin form
The current-carrying capability of device, it is also ensured that the flatness of transformer, convenient for batch production.
Further, transformer provided by the embodiments of the present application, partially flat EE type magnetic core docking use, and interface uses special height
Low temperature, which is all satisfied, requires bonded adhesives to be adhesively fixed, and guarantees that Switching Power Supply either can guarantee just in high temperature or low temperature
Often work, winding also use bonded adhesives to be adhesively fixed with magnetic core, are that magnetic core and PCB winding become an entirety, reliability
It is higher.
Further, two-sided heat-conducting glue band is pasted in transformer provided by the embodiments of the present application, magnetic core bottom, plays heat loss through conduction and consolidates
Determine the effect of transformer.
Further, transformer provided by the embodiments of the present application, the pin of transformer is L-type pin, while also guaranteeing four
The magnetic core bottom heat-conducting glue band of pin and transformer is mounted in base board or other planks, winding and magnetic core in same level
It radiates simultaneously, heat dissipation effect is splendid, while can just produced with large-scale chip mounter mass again, ensure that the accurate of position resolver
Property.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 shows a kind of schematic diagram of transformer provided by the utility model embodiment；
Fig. 2 shows the schematic diagrames of the magnetic core in transformer provided by the utility model embodiment；
Fig. 3 shows the schematic diagram of the PCB winding in a kind of transformer provided by the utility model embodiment；
Fig. 4 shows the specific schematic diagram of the pin in transformer provided by the utility model embodiment；
Fig. 5 shows a kind of Switching Power Supply schematic diagram provided by the utility model embodiment.
It illustrates:
101- magnetic core；102-PCB winding；The two-sided heat-conducting glue band of 103-；104-L type pin；The first of 401-L type pin
Part；The second part of 402-L type pin；501- flat surface transformer；502- rectification circuit.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Usually described in attached drawing here
It can arrange and design with a variety of different configurations with the component of the utility model embodiment shown.Therefore, below to
The detailed description of the embodiments of the present invention provided in attached drawing is not intended to limit the model of claimed invention
It encloses, but is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, is fallen within the protection scope of the utility model.
It should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular in the description of the present invention,
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In addition, in the description of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, it can understand that above-mentioned term is practical at this with concrete condition
Concrete meaning in novel.
Volume of transformer in current Switching Power Supply is big, and fever is high, is unfavorable for installing, and is based on this, the utility model mentions
The transformer in a kind of Switching Power Supply supplied, can reduce volume, reduces fever, is easily installed and produces in batches.
The utility model embodiment provides the flat surface transformer in a kind of Switching Power Supply, and Fig. 1 shows the utility model
A kind of schematic diagram of flat surface transformer provided by embodiment；
The flat surface transformer includes: magnetic core 101 and the PCB winding 102 that is wrapped on the center pillar of the magnetic core 101, described
Magnetic core 101 includes multiple partially flat EE type magnetic core groups；
Wherein, flat surface transformer, flat surface transformer be it is a kind of there is high frequency, height very little and the features such as very high working frequency
Instrument.
The PCB winding 102 is adhesively fixed with the magnetic core 101 using bonded adhesives；
The range of copper wire diameter in the PCB winding 102 is 3-10 ounces.
Wherein, magnetic core is partially flat EE type magnetic core, in transformer provided by the utility model embodiment shown referring to fig. 2
Magnetic core schematic diagram；
The magnetic core includes one and is located in the middle center pillar and two lateral columns positioned at side.
In use, two EE type magnetic core docking can be used, PCB winding is covered on center pillar.
Two can also be divided into using multiple EE type magnetic cores, such as 4,6,8,10,12 etc. according to actual requirement of engineering
Group first covers PCB winding on one group of center pillar, so if 6 stack up when using 12 EE type magnetic cores for one group
It is docked afterwards with another group；Interface is using bonding glue connection.
Also using bonding gluing knot between PCB winding and center pillar, so that structure is stronger.
Wherein, PCB winding is a kind of integrally formed winding, and the utility model embodiment shown in Figure 3 is provided
A kind of transformer in winding scheme of installation；
After the PCB winding is in use, producer's production molding can be entrusted, being directly sleeved on magnetic core be can be used.It can be with
Regard a circuit board as, which includes windings.
All windings of transformer are all wound on the center pillar of a kind of partially flat EE type magnetic core, and the transformer of entire series is
PCB winding；The primary of winding, secondary combine to form the different turn ratioes by different series and parallels, and interlayer uses high TG material
Insulation, eventually forms the complete multi-layer PCB winding of a monolith.
The copper thickness of PCB winding is that several ounces (being adjusted according to client's electric current) is used to reduce skin effect；
What PCB winding was formed is that an entirety belongs to chassis less construction, improves window utilization rate, is come by mill and machine
Production guarantees batch production, and few human factors participate in, and consistency is good；
Primary and secondary is an entirety, and all using sandwich winding, close-coupled leakage inductance is very small, while can also accomplish
Very high working frequency.
Because primary and secondary winding is integration, magnetic core is flat EE type magnetic core so transformer height is very low, to drop
The height of low Switching Power Supply.
The technical solution of the application, the copper wire diameter range of PCB winding are 3-10 ounces, can reduce skin effect.It mentions
The high utilization rate of winding.And PCB winding is used, since winding is to be integrally formed, when use only needs to be directly sleeved on magnetic core
Center pillar on, it is easy for installation, be convenient for large batch of production, thus also improve production transformer efficiency, shorten assembling become
The time of depressor.
In order to meet Switching Power Supply switching frequency requirement, in a kind of specific embodiment, the partially flat EE type
The working frequency of magnetic core is 20KHz-1MHz.To meet the requirement of Switching Power Supply 20KHz-500KHz.
In a kind of specific embodiment, each partially flat EE type magnetic core group is that two partially flat EE type magnetic core docking are constituted；
The interface for docking the two partially flat EE type magnetic cores constituted is adhesively fixed by bonded adhesives.
When it is implemented, the EE type magnetic core of different number according to actual requirement of engineering, can be selected.
It further include the two-sided heat-conducting glue band for being attached to the magnetic core bottom, for radiating in a kind of specific embodiment
With the fixation transformer.
It further include two-sided heat-conducting glue band 103 in transformer schematic diagram referring to figure 1；The two-sided heat-conducting glue band 103
It is bonded in the bottom of magnetic core；Circuit board is bonded on one side, is bonded the magnetic core of transformer on one side, is consolidated the transformer to realize
Determine on circuit boards.
In order to realize transmission electric parameter and realize the fixed transformer, in a kind of specific embodiment, also
Including four L type pins that the magnetic core bottom is arranged in for radiating and fixing the transformer；Four L-type pin welderings
It connects on circuit boards, can also play the role of transmitting electric current between transformer and circuit board.
Transformer schematic diagram referring to figure 1；Flat surface transformer includes L-type pin 104；
And the specific schematic diagram of the pin in transformer provided by attached the utility model embodiment shown in Fig. 4, the L
Type pin 104 includes first part 401 and second part 402；
First part 401 is fixed with welding circuit board；
Second part 402 is three, penetrates PCB winding respectively, is welded and fixed in the other side of PCB winding；
It is worth noting that, the winding of PCB will connect second part 402 inside PCB winding, so that three
Two parts 402 can transmit electric current to first part 401；Electric current is transferred to circuit board through first part 401 again；It certainly can also
It is transmitted with opposite direction；To realize the transmission for carrying out electric parameter between transformer and circuit board.
The L-type pin 104 of the novel proposition of the application, had not only realized fixed transformer, but also realized transmission electric parameter
Effect, in the process of the batch production of transformer, also facilitates installation, improves the production efficiency of transformer.
Transformer can guarantee the current-carrying capability of transformer using the installation of L-type pin form, it is also ensured that transformer
Flatness, convenient for batch production.
In a kind of specific embodiment, four L-type pins and the two-sided heat-conducting glue band are in same level
On.
In order to preferably determine the diameter range of copper wire, in a kind of specific embodiment, in the PCB winding
The range of copper wire diameter is 4-6 ounces.
In a kind of specific embodiment, the surface of the PCB winding is provided with the plane for distinguishing different model
The mark of transformer.
The different PCB windings used on flat surface transformer in order to distinguish different model, in a kind of possible embodiment party
In formula, mark is arranged in the surface of PCB winding, for distinguishing the flat surface transformer of different model.
Wherein, 16/5 volt of the model of some flat surface transformers；16/5 is marked on PCB winding, for marking the PCB
Winding can be used only on the flat surface transformer of 16/5 volt of model；
The no-load voltage ratio of the voltage of some flat surface transformers is 30/5 volt, 30/5 is marked on PCB winding, for marking this
PCB winding can be used only on the flat surface transformer of 30/5 volt of model.
Corresponding with transformer, the utility model provides a kind of Switching Power Supply, including above-mentioned flat surface transformer.
In a kind of specific embodiment, Switching Power Supply schematic diagram shown in Figure 5；
The Switching Power Supply includes flat surface transformer 501 and the rectified current that is connected with the output end of the flat surface transformer 501
Road 502, rectification circuit 502 are used for AC rectification into direct current；The output of the rectification circuit is as the defeated of the Switching Power Supply
Out.
Thick attached copper multi-layer board PCB during installation, is mounted on the magnetic core center pillar of flat EE type by the flat surface transformer of the application
On, flat EE type magnetic core dispensing, magnetic core interface dispensing；The inductance of test transformer, dielectric strength and whether meet the requirements, such as
Fruit is undesirable, and magnetic core is removed, and sees if there is foreign matter, re-assemblies after removal, and after meeting the requirements, being put into high-temperature cabinet is ring
The solidification of oxygen resin glue.Finally bond plies and transformer bottom are bonded, L-type pin in welding, is finally completed practical
A series of novel attached copper flat surface transformers of forward converter Switching Power Supply multilayer plate thickness.
A series of attached copper flat surface transformer of forward converter Switching Power Supply multilayer plate thickness and traditional transformer that the application proposes
Compare, design is more applicable in Switching Power Supply property requirements, small in size, and good heat dissipation, power density be big, high-efficient, distribution parameter
Consistency is good, leakage inductance consistency is good, and transformer Highgrade integration, working frequency are up to 500KHz；It is made into using the transformer
A series of forward converter Switching Power Supplies are convenient for debugging production, and consistency is good, high production efficiency, and performance is stablized.
The technical solution of the application, the copper wire diameter range of PCB winding are 3-10 ounces, can reduce skin effect.It mentions
The high utilization rate of winding.And PCB winding is used, since winding is to be integrally formed, when use only needs to be directly sleeved on magnetic core
Center pillar on, it is easy for installation, be convenient for large batch of production, thus also improve production transformer efficiency, shorten assembling become
The time of depressor.
Further, transformer provided by the embodiment of the utility model, secondary are installed using transformer using L-type pin form
It can guarantee the current-carrying capability of transformer, it is also ensured that the flatness of transformer, convenient for batch production.
Further, transformer provided by the embodiment of the utility model, partially flat EE type magnetic core docking use, and interface uses special
Different high/low temperature, which is all satisfied, requires bonded adhesives to be adhesively fixed, and guarantees that Switching Power Supply either can be protected in high temperature or low temperature
Card works normally, and winding also uses bonded adhesives to be adhesively fixed with magnetic core, is that magnetic core and PCB winding become an entirety, can
It is higher by property.
Further, two-sided heat-conducting glue band is pasted in transformer provided by the embodiment of the utility model, magnetic core bottom, plays heat loss through conduction
With the effect of fixed transformer.
Further, the pin of transformer provided by the embodiment of the utility model, transformer is L-type pin, while also being guaranteed
The magnetic core bottom heat-conducting glue band of four pins and transformer in same level, be mounted in base board or other planks, winding and
Magnetic core radiates simultaneously, and heat dissipation effect is splendid, while can just produced with large-scale chip mounter mass again, ensure that position resolver
Accuracy.
And the application uses the flat surface transformer of transformer integrated integration, the area for occupying PCB is very small, and plane becomes
The height of depressor is natively very low, so reaching smaller, the lower requirement of height for doing the volume of entire Switching Power Supply.Transformation
Device is exoskeletal around finger, and primary secondary is combined closely.
Further, for convenience to do the volume of entire Switching Power Supply smaller, and height is lower, and the application uses and becomes
The flat surface transformer of depressor height integrated integration occupies the area very little of PCB.
The leakage inductance of transformer can accomplish very low that consistency is good, and efficiency is very high, and temperature rise is very low in this way.But general tradition
The leakage inductance and distribution capacity of transformer are difficult to control its batch consistency and installation volume, temperature rise limitation, thus to actual
Switching Power Supply batch produces debugging and brings very big difficulty, and in addition the structure of traditional transformer has been unfavorable for radiating, so being difficult
Realize that high frequency, low-loss, high power be close, modular development trend.
Although the preferred embodiment of the utility model has been described, those skilled in the art once obtain above content
Cicada basic creative concept, then additional changes and modifications may be made to these embodiments.So appended claims are intended to
It is construed to include preferred embodiment and all change and modification for falling into the scope of the utility model.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (10)
1. a kind of flat surface transformer characterized by comprising magnetic core and the PCB winding being wrapped on the center pillar of the magnetic core, institute
Stating magnetic core includes multiple partially flat EE type magnetic core groups；
The PCB winding is adhesively fixed with the magnetic core using bonded adhesives；The range of copper wire diameter in the PCB winding
It is 3-10 ounces.
2. flat surface transformer according to claim 1, which is characterized in that the working frequency of the partially flat EE type magnetic core is
20KHz-1MHz。
3. flat surface transformer according to claim 1, which is characterized in that each partially flat EE type magnetic core group is two partially flat EE
The docking of type magnetic core is constituted；The interface for docking the two partially flat EE type magnetic cores constituted is adhesively fixed by bonded adhesives.
4. flat surface transformer according to claim 1, which is characterized in that further include becoming for radiating and fixing the plane
The two-sided heat-conducting glue band of depressor, the two-sided heat-conducting glue band are pasted onto the magnetic core bottom.
5. flat surface transformer according to claim 4, which is characterized in that further include for radiating and fixing the transformer
Four L-type pins, four L-type pins are arranged in the magnetic core bottom.
6. flat surface transformer according to claim 5, which is characterized in that four L-type pins and described two-sided thermally conductive
Adhesive tape is in same level.
7. flat surface transformer according to claim 1, which is characterized in that the range of the copper wire diameter in the PCB winding
It is 4-6 ounces.
8. flat surface transformer according to claim 1, which is characterized in that the surface of the PCB winding is provided with for area
Divide the mark of the flat surface transformer of different model.
9. a kind of Switching Power Supply, which is characterized in that including flat surface transformer as claimed in any one of claims 1 to 8.
10. Switching Power Supply according to claim 9, which is characterized in that further include the output end with the flat surface transformer
Connected rectification circuit, output of the output of the rectification circuit as the Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920009815.4U CN209216714U (en) | 2019-01-03 | 2019-01-03 | A kind of flat surface transformer and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920009815.4U CN209216714U (en) | 2019-01-03 | 2019-01-03 | A kind of flat surface transformer and power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209216714U true CN209216714U (en) | 2019-08-06 |
Family
ID=67466858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201920009815.4U Active CN209216714U (en) | 2019-01-03 | 2019-01-03 | A kind of flat surface transformer and power supply |
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| Country | Link |
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| CN (1) | CN209216714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951564A (en) * | 2021-02-19 | 2021-06-11 | 广东力王高新科技股份有限公司 | Planar transformer and charging device |
-
2019
- 2019-01-03 CN CN201920009815.4U patent/CN209216714U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951564A (en) * | 2021-02-19 | 2021-06-11 | 广东力王高新科技股份有限公司 | Planar transformer and charging device |
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