CN209657936U - A kind of flat-plate transformer - Google Patents
A kind of flat-plate transformer Download PDFInfo
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- CN209657936U CN209657936U CN201920712034.1U CN201920712034U CN209657936U CN 209657936 U CN209657936 U CN 209657936U CN 201920712034 U CN201920712034 U CN 201920712034U CN 209657936 U CN209657936 U CN 209657936U
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- conductive bar
- aperture
- circuit board
- conductive
- flat
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Abstract
The utility model embodiment provides a kind of flat-plate transformer, including magnetic core and at least two printed circuit boards, at least two printed circuit boards include first circuit board and second circuit board, first circuit board is equipped with the first aperture passed through for magnetic core, first circuit board is equipped with the first conductive bar and the second conductive bar, first conductive bar and the second conductive bar extend outwardly around the rotation of the first hole plate, and first conductive bar and the second conductive bar staggeredly interval setting when spiraling, second circuit board is equipped with the second aperture passed through for magnetic core, second circuit board is equipped with third conductive bar and the 4th conductive bar, third conductive bar and the 4th conductive bar extend outwardly around the rotation of the second hole plate, and third conductive bar and the 4th the conductive bar staggeredly interval setting when spiraling, first conductive bar is aligned with third conductive bar, second conductive bar is aligned with the 4th conductive bar.Flat-plate transformer size provided by the embodiment of the utility model is smaller, and parasitic capacitance is smaller.
Description
Technical field
The utility model relates to transformer equipment fields, and more particularly, to a kind of flat-plate transformer.
Background technique
Transformer is the important component of power electronic equipment, is widely used in all kinds of power electronic equipments.Tradition
Then the transformer of mode winds magnetic core across skeleton blend compounds band by skeleton come coiling primary coil and secondary coil
It is fixed, then product is made by encapsulation.The transformer size of traditional approach is larger, is unfavorable for realizing the miniaturization of product.
Utility model content
The utility model embodiment provides a kind of flat-plate transformer, larger with the transformer size for solving traditional approach, no
The problem of conducive to the miniaturization for realizing product.
The utility model embodiment provides a kind of flat-plate transformer, including magnetic core and at least two printed circuit boards, wherein
At least two printed circuit board includes first circuit board and second circuit board, the first circuit board and the second circuit
Plate is the circuit board of arbitrary neighborhood at least two printed circuit board；
The first circuit board is equipped with the first aperture passed through for the magnetic core, and the first circuit board is equipped with first
Conductive bar and the second conductive bar, first conductive bar and second conductive bar surround the first hole plate rotation direction extension
It stretches, and the staggeredly interval setting when spiraling of first conductive bar and second conductive bar；
The second circuit board is equipped with the second aperture passed through for the magnetic core, and the second circuit board is equipped with third
Conductive bar and the 4th conductive bar, the third conductive bar and the 4th conductive bar surround the second hole plate rotation direction extension
It stretches, and the staggeredly interval setting when spiraling of the third conductive bar and the 4th conductive bar；
Wherein, first conductive bar and the third conductive bar connect and compose primary coil, second conductive bar with
4th conductive bar connects and composes secondary coil, and first conductive bar is aligned with the third conductive bar, and described second leads
Electric article is aligned with the 4th conductive bar.
Optionally, the first circuit board includes first surface and second surface, and the first surface is equipped with described first
Conductive bar and the second conductive bar, the second surface are equipped with two identical with the third conductive bar and the 4th busbar structure
Conductive bar；
At least two printed circuit board further includes tertiary circuit plate, and the tertiary circuit plate is equipped with and leads with described first
Electric item and identical two conductive bars of the second busbar structure, the second circuit board are bonded with the first surface, and described
Three-circuit plate is bonded with the second surface.
Optionally, first conductive bar includes the first line end close to first aperture, the second conductive bar packet
Include the second line end close to first aperture；
The third conductive bar includes the third line end close to second aperture, and the 4th conductive bar includes close to institute
State the 4th line end of the second aperture；
First line end is connect with the third line end, and second line end is connect with the 4th line end.
Optionally, first conductive bar surrounds institute with second conductive bar around the direction of spiraling of first aperture
The direction of spiraling for stating the first aperture is identical；
The third conductive bar is around the direction of spiraling of second aperture with the 4th conductive bar around described second
The direction of spiraling of aperture is identical；
First conductive bar is around the direction of spiraling of first aperture with the third conductive bar around described second
Spiraling for aperture is contrary.
Optionally, staggeredly the spacing at interval is identical when spiraling for first conductive bar and second conductive bar, described
Staggeredly the spacing at interval is identical when spiraling for third conductive bar and the 4th conductive bar.
Optionally, the wire circle of the primary coil is identical as the wire circle of the secondary coil.
Optionally, the primary coil is rectangular, and the secondary coil is rectangular.
Optionally, the flat-plate transformer includes multiple primary coils and multiple secondary coils, the multiple
Primary coil is connected by parallel and/or concatenated mode, and the multiple secondary coil is connected by parallel and/or concatenated mode
It connects.
Optionally, first aperture and second aperture is equal in magnitude.
Flat-plate transformer provided by the embodiment of the utility model, including magnetic core and at least two printed circuit boards, it is described extremely
Few two printed circuit boards include first circuit board and second circuit board, and the first circuit board is equipped with to be passed through for the magnetic core
The first aperture, the second circuit board is equipped with the second aperture passed through for the magnetic core, the size of the flat-plate transformer
It is smaller；First conductive bar is aligned with the third conductive bar, and second conductive bar is aligned with the 4th conductive bar, from
And primary coil and secondary coil overlapping region are smaller, so that the parasitic capacitance of the flat-plate transformer is smaller, can be improved flat
The high-frequency work characteristic of board transformer, reduces the power loss of flat-plate transformer.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, embodiment or the prior art will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of wire structures signal of the first circuit board of flat-plate transformer provided by the embodiment of the utility model
Figure；
Fig. 2 is a kind of wire structures signal of the second circuit board of flat-plate transformer provided by the embodiment of the utility model
Figure；
Fig. 3 is a kind of wire structures schematic diagram of flat-plate transformer provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the embodiments are a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, fall within the protection scope of the utility model.
It please refers to Fig.1 to Fig.3, flat-plate transformer includes magnetic core and at least two printed circuit boards, wherein at least two prints
Printed circuit board includes first circuit board 1 and second circuit board 2, and first circuit board 1 and second circuit board 2 are at least two printing electricity
The circuit board of arbitrary neighborhood in the plate of road；
As shown in Figure 1, first circuit board 1 is equipped with the first aperture 13 for passing through for magnetic core, first circuit board 1 is equipped with the
One conductive bar 11 and the second conductive bar 12, the first conductive bar 11 and the second conductive bar 12 spiral around the first aperture 13 to extension
It stretches, and the staggeredly interval setting when spiraling of the first conductive bar 11 and the second conductive bar 12；
As shown in Fig. 2, second circuit board 2 is equipped with the second aperture 23 for passing through for magnetic core, second circuit board 2 is equipped with the
Three conductive bars 21 and the 4th conductive bar 22, third conductive bar 21 and the 4th conductive bar 22 spiral around the second aperture 23 to extension
It stretches, and the staggeredly interval setting when spiraling of third conductive bar 21 and the 4th conductive bar 22；
Wherein, as shown in figure 3, the first conductive bar 11 connects and composes primary coil, the second conductive bar with third conductive bar 21
12 and the 4th conductive bar 22 connect and compose secondary coil, the first conductive bar 11 is aligned with third conductive bar 21, the second conductive bar 12
It is aligned with the 4th conductive bar 22.
Wherein, magnetic core can be EE type magnetic core, perhaps can be RM type magnetic core or can be PQ type magnetic core etc., this reality
With new embodiment to this without limiting.At least two printed circuit boards can be set on magnetic core, specifically, can be set with
In on the center pillar of magnetic core.First aperture 13 and the second aperture 23 can be passed through for the center pillar of magnetic core.First conductive bar 11, second are led
Electric article 12, third conductive bar 21 and the 4th conductive bar 22 can be paving copper wire.The company of first conductive bar 11 and third conductive bar 21
Connecing end can be close to the first aperture 13, and the connecting pin of the second conductive bar 12 and the 4th conductive bar 22 can be close to the first aperture 13.
In addition, the first conductive bar 11 is aligned with third conductive bar 21, the second conductive bar 12 is aligned with the 4th conductive bar 22, can
To be that the circumferential direction around the first aperture 13 is provided with the first reserved space 14, it can be and set in the circumferential direction around the second aperture 23
It is equipped with the second reserved space 24, the first conductive bar 11 and the second conductive bar 12 spiral around the first aperture 13 and avoid when extending outwardly
It is pre- that first reserved space 14, third conductive bar 21 and the 4th conductive bar 22 avoid second when extending outwardly around the rotation of the second hole plate
Spacing 24.First reserved space 14 and the second reserved space 24 can be used for the first conductive bar 11 and connect with third conductive bar 21
It connects, so that primary coil and secondary coil overlapping region are smaller.
As a kind of specific embodiment, as shown in Figure 1, on first circuit board 1 first aperture 13 be it is rectangular, first opens
Hole 13 is surround by the first conductive bar 11 and the second conductive bar 12, and the first of the first aperture 13 is while with second by the first conductive bar
11 surround, and the third side of the first aperture 13 is surround by the second conductive bar 12, and the 4th side of the first aperture 13 is circumferentially provided with first
Reserved space 14, the first aperture 13 first while, second while, third while and when the 4th successively along setting clockwise.Such as Fig. 2 institute
Show, second aperture 23 is rectangular on second circuit board 2, and the second aperture 23 is by 22 rings of third conductive bar 21 and the 4th conductive bar
Around the first of the second aperture 23 is surround while with second by third conductive bar 21, and the third side of the second aperture 23 is by the 4th conduction
Item 22 is surround, and the 4th side of the second aperture 23 is circumferentially provided with the second reserved space 24, the first side of the second aperture 23, second
In, third and the 4th side is successively along setting counterclockwise.As shown in figure 3, when the first conductive bar 11 is connect with third conductive bar 21,
Third conductive bar 21 is projected as the first reserved space on first circuit board 1 around the part on the second side of the second aperture 23
14, the first conductive bar 11 is projected as second leaving a blank in advance around the part on the second side of the first aperture 13 on second circuit board 2
Between 24.
It should be noted that the first conductive bar 11, the second conductive bar 12, third conductive bar 21 and the 4th conductive bar 22 can be with
It is the copper wire in layer top layer wiring layer or bottom the wiring layer laying of printed circuit board.First conductive bar 11 and the second conductive bar 12 can
To be interlinkage coupling wiring, third conductive bar 21 and the 4th conductive bar 22 can be interlinkage coupling wiring, that is to say, that first leads
Electric item 11 and the wiring of the second conductive bar 12 interval, third conductive bar 21 and the wiring of the 4th conductive bar 22 interval, the first conductive bar 11
In have the coil of second conductive bar 12 between adjacent two coils, and two coils adjacent in the second conductive bar 12 it
Between have the coil of first conductive bar 11, have the 4th conductive bar 22 between two adjacent coils in third conductive bar 21
Coil, and have the coil of a third conductive bar 21 between two coils adjacent in the 4th conductive bar 22.Transformer is big
When working under the high frequency condition of 1MHz, since the parasitic parameter of its coil windings can bring very big interference, transformation is influenced
The working efficiency of device, so that the power loss of transformer is larger, the filtering performance and external interference to transformer are very big, this reality
The flat-plate transformer provided with new embodiment is since using the coupling wiring that interlinks, leakage inductance and parasitic capacitance are smaller, in high frequency item
Working efficiency is higher under part.
Flat-plate transformer provided by the embodiment of the utility model, including magnetic core and at least two printed circuit boards, at least two
A printed circuit board includes first circuit board 1 and second circuit board 2, and first circuit board 1 is equipped with and opens for magnetic core passes through first
Hole 13, second circuit board 2 are equipped with the second aperture 23 passed through for magnetic core, and the size of flat-plate transformer is smaller；First conductive bar
11 are aligned with third conductive bar 21, and the second conductive bar 12 is aligned with the 4th conductive bar 22, thus primary coil and secondary coil weight
Folded region is smaller, so that the parasitic capacitance of flat-plate transformer is smaller, can be improved the high-frequency work characteristic of flat-plate transformer, reduces
The power loss of flat-plate transformer.
As an alternative embodiment, first circuit board 1 includes first surface and second surface, first surface is equipped with
First conductive bar 11 and the second conductive bar 12, second surface are equipped with identical with third conductive bar 21 and 22 structure of the 4th conductive bar
Two conductive bars；
At least two printed circuit boards further include tertiary circuit plate, and tertiary circuit plate is equipped with and the first conductive bar 11 and second
Identical two conductive bars of 12 structure of conductive bar, second circuit board 2 are bonded with first surface, and tertiary circuit plate and second surface paste
It closes.
Wherein, two conductive bars on tertiary circuit plate connect respectively with the conductive bar on second surface on first circuit board 1
It connects.
In present embodiment, first surface is equipped with the first conductive bar 11 and the second conductive bar 12, and second surface is equipped with and the
Three conductive bars 21 and identical two conductive bars of 22 structure of the 4th conductive bar are respectively set on two surfaces of first circuit board 1
Conductive bar makes full use of circuit board, so that the structure of flat-plate transformer is more compact.
As an alternative embodiment, as shown in Figure 1, the first conductive bar 11 includes close to the first of the first aperture 13
Line end 111, the second conductive bar 12 include the second line end 121 close to the first aperture 13；
As shown in Fig. 2, third conductive bar 21 includes the third line end 211 close to the second aperture 23, the 4th conductive bar 22 packet
Include the 4th line end 221 close to the second aperture 23；
As shown in figure 3, the first line end 111 is connect with third line end 211, the second line end 121 is connect with the 4th line end 221.
Wherein, the first line end 111 and third line end 211 are used for the first conductive bar 11 and third conductive bar 21 in two circuits
Interlayer connection between plate, the second line end 121 and the 4th line end 221 are for the second conductive bar 12 and the 4th conductive bar 22 at two
Interlayer connection between circuit board.First conductive bar 11 can also include the 5th line end 112 far from the first aperture 13, and second leads
Electric article 12 can also include the 6th line end 122 far from the first aperture 13；Third conductive bar 21 can also include opening far from second
7th line end 212 in hole 23, the 4th conductive bar 22 can also include the 8th line end 222 far from the second aperture 23；5th line end
112 and the 7th line end 212 be primary coil terminals, the 6th line end 122 and the 8th line end 222 are the wiring of secondary coil
End.
In present embodiment, the first line end 111 and the second line end 121 are close to the first aperture 13, third line end 211 and the 4th
Line end 221 connect convenient for the first line end 111 with third line end 211, the second line end 121 and the 4th line end close to the second aperture 23
221 connections.
As an alternative embodiment, as shown in Figure 1 to Figure 3, the first conductive bar 11 surrounds the disk of the first aperture 13
It is identical around the direction of spiraling of the first aperture 13 as the second conductive bar 12 to revolve direction；
Third conductive bar 21 surrounds the disk of the second aperture 23 around the direction of spiraling of the second aperture 23 with the 4th conductive bar 22
It is identical to revolve direction；
First conductive bar 11 surrounds the disk of the second aperture 23 around the direction of spiraling of the first aperture 13 with third conductive bar 21
It revolves contrary.
Wherein, spiral direction can for clockwise or can be counterclockwise, as shown in Figure 1, being enclosed in the first conductive bar 11
Direction of spiraling around the first aperture 13 is in clockwise situation, and the second conductive bar 12 surrounds the direction of spiraling of the first aperture 13
For clockwise, third conductive bar 21 is around the direction of spiraling of the second aperture 23 for counterclockwise, the 4th conductive bar 22 encloses
Direction of spiraling around the second aperture 23 is counterclockwise.
In present embodiment, the first conductive bar 11 around the first aperture 13 spiral direction and the second conductive bar 12 around the
The direction of spiraling of one aperture 13 is identical；Third conductive bar 21 is surrounded around the direction of spiraling of the second aperture 23 with the 4th conductive bar 22
The direction of spiraling of second aperture 23 is identical；First conductive bar 11 is enclosed around the direction of spiraling of the first aperture 13 with third conductive bar 21
Contrary around spiraling for the second aperture 23, thus non-intersecting between the first conductive bar 11 and the second conductive bar 12, third is conductive
Articles 21 and the 4th non-intersecting between conductive bar 22, so that the reliability of flat-plate transformer is higher.
As an alternative embodiment, between the first conductive bar 11 and the second conductive bar 12 are staggeredly spaced when spiraling
Away from identical, staggeredly the spacing at interval is identical when spiraling for third conductive bar 21 and the 4th conductive bar 22.
Wherein, the first conductive bar 11 and the second conductive bar 12 when spiraling staggeredly the spacing at interval and third conductive bar 21 and
Staggeredly the spacing at interval can be identical when spiraling for 4th conductive bar 22.
In present embodiment, staggeredly the spacing at interval is identical when spiraling for the first conductive bar 11 and the second conductive bar 12, the
Staggeredly the spacing at interval is identical when spiraling for three conductive bars 21 and the 4th conductive bar 22, thus first circuit board 1 and second circuit
The wiring of plate 2 is more beautiful, and is routed more rule, is suitable for producing in batches, and be convenient for the assembling of flat-plate transformer.
As an alternative embodiment, the wire circle of primary coil is identical as the wire circle of secondary coil.
As an alternative embodiment, primary coil be it is rectangular, secondary coil be it is rectangular.
In present embodiment, primary coil be it is rectangular, secondary coil be it is rectangular, be convenient for circuit board wiring.
As an alternative embodiment, flat-plate transformer includes multiple primary coils and multiple secondary coils, it is multiple
Primary coil is connected by parallel and/or concatenated mode, and multiple secondary coils are connected by parallel and/or concatenated mode.
As an alternative embodiment, the first aperture 13 and the second aperture 23 is equal in magnitude.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
In the description of the present invention, it should be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness
The side of the instructions such as degree ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description the utility model and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it should not be understood as limiting the present invention.In the description of the present invention, unless otherwise indicated, " multiple " contain
Justice is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " setting ", " connection " shall be understood in a broad sense.For example, it may be being fixedly connected, it may be a detachable connection, or integrally
Connection；It can be directly connected, it can also be indirectly connected through an intermediary.Be fixedly connected can for welding, be threadedly coupled and
The common techniques scheme such as step up.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in utility model.
More than, only specific embodiment of the present utility model, but protection scope of the utility model is not limited thereto,
Anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation or replace
It changes, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with claim
Subject to protection scope.
Claims (9)
1. a kind of flat-plate transformer, which is characterized in that including magnetic core and at least two printed circuit boards, wherein described at least two
A printed circuit board includes first circuit board and second circuit board, the first circuit board and the second circuit board be it is described extremely
The circuit board of arbitrary neighborhood in few two printed circuit boards；
The first circuit board is equipped with the first aperture passed through for the magnetic core, and it is conductive that the first circuit board is equipped with first
Item and the second conductive bar, first conductive bar and second conductive bar extend outwardly around first hole plate rotation, and
The staggeredly interval setting when spiraling of first conductive bar and second conductive bar；
The second circuit board is equipped with the second aperture passed through for the magnetic core, and it is conductive that the second circuit board is equipped with third
Article and the 4th conductive bar, the third conductive bar and the 4th conductive bar extend outwardly around second hole plate rotation, and
The staggeredly interval setting when spiraling of the third conductive bar and the 4th conductive bar；
Wherein, first conductive bar and the third conductive bar connect and compose primary coil, second conductive bar with it is described
4th conductive bar connects and composes secondary coil, and first conductive bar is aligned with the third conductive bar, second conductive bar
It is aligned with the 4th conductive bar.
2. flat-plate transformer according to claim 1, which is characterized in that the first circuit board includes first surface and
Two surfaces, the first surface are equipped with first conductive bar and the second conductive bar, and the second surface is equipped with and the third
Conductive bar and identical two conductive bars of the 4th busbar structure；
At least two printed circuit board further includes tertiary circuit plate, and the tertiary circuit plate is equipped with and first conductive bar
Two conductive bars identical with the second busbar structure, the second circuit board are bonded with the first surface, the third electricity
Road plate is bonded with the second surface.
3. flat-plate transformer according to claim 1, which is characterized in that first conductive bar includes close to described first
First line end of aperture, second conductive bar include the second line end close to first aperture；
The third conductive bar includes the third line end close to second aperture, and the 4th conductive bar includes close to described the
4th line end of two apertures；
First line end is connect with the third line end, and second line end is connect with the 4th line end.
4. flat-plate transformer according to claim 1, which is characterized in that first conductive bar surrounds first aperture
Spiral direction and second conductive bar it is identical around the direction of spiraling of first aperture；
The third conductive bar is around the direction of spiraling of second aperture with the 4th conductive bar around second aperture
Direction of spiraling it is identical；
First conductive bar is around the direction of spiraling of first aperture with the third conductive bar around second aperture
Spiral it is contrary.
5. flat-plate transformer according to claim 1, which is characterized in that first conductive bar and second conductive bar
When spiraling, staggeredly the spacing at interval is identical, between the third conductive bar and the 4th conductive bar are staggeredly spaced when spiraling
Away from identical.
6. flat-plate transformer according to claim 1, which is characterized in that the wire circle of the primary coil and described time
The wire circle of grade coil is identical.
7. flat-plate transformer according to claim 1, which is characterized in that the primary coil is rectangular, the secondary wire
Circle is rectangular.
8. flat-plate transformer according to claim 1, which is characterized in that the flat-plate transformer includes multiple primary
Coil and multiple secondary coils, the multiple primary coil are connected by parallel and/or concatenated mode, and the multiple time
Grade coil is connected by parallel and/or concatenated mode.
9. flat-plate transformer according to claim 1, which is characterized in that first aperture and second aperture it is big
It is small equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920712034.1U CN209657936U (en) | 2019-05-17 | 2019-05-17 | A kind of flat-plate transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920712034.1U CN209657936U (en) | 2019-05-17 | 2019-05-17 | A kind of flat-plate transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209657936U true CN209657936U (en) | 2019-11-19 |
Family
ID=68530344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920712034.1U Active CN209657936U (en) | 2019-05-17 | 2019-05-17 | A kind of flat-plate transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209657936U (en) |
-
2019
- 2019-05-17 CN CN201920712034.1U patent/CN209657936U/en active Active
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