CN106328357A - Planar transformer based on double-sided printed circuit boards - Google Patents
Planar transformer based on double-sided printed circuit boards Download PDFInfo
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- CN106328357A CN106328357A CN201610958371.XA CN201610958371A CN106328357A CN 106328357 A CN106328357 A CN 106328357A CN 201610958371 A CN201610958371 A CN 201610958371A CN 106328357 A CN106328357 A CN 106328357A
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Classifications
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2809—Printed windings on stacked layers
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2819—Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit
Abstract
The invention discloses a planar transformer based on double-sided printed circuit boards. The planar transformer comprises magnetic cores and printed circuit boards, wherein the magnetic cores surround the peripheries of the printed circuit boards; pattern layers are arranged on the front side and the back side of each printed circuit board; each pattern layer comprises a coil zone, a lead node and a connecting point; the coil zone on the back side of the printed circuit board on the upper layer vertically coincides with the pattern layer on the front side of the printed circuit board on the lower layer, and the lead nodes on the front side and the back side of each printed circuit board are located on the upper side and the lower side or the left side and the right side of the corresponding printed circuit board; the planar transformer further comprises connecting assemblies for connecting different layers of printed circuit boards. A primary winding or a secondary winding has rich constitution modes, the number of layers of the printed circuit boards is reduced by a half under the condition of the same turn ratio, the thinning development of the planar transformer is facilitated, different turns ratios can be realized according to the actual demand, and the functions are diversified.
Description
Technical field
The present invention relates to field transformer, particularly relate to a kind of flat surface transformer based on double-sided printed-circuit board.
Background technology
Flat surface transformer is a kind of new technique that development in recent years is got up, and its successful development makes the body of mains transformer
Amass and greatly reduce, the most effectively reduced, be the once leap of transformer technology.There is leakage inductance in conventional transformer
Greatly, turn-to-turn capacitance is big, and Kelvin effect, kindred effect are serious, and magnetic core has the problems such as hot-spot, and flat surface transformer can reduce leakage
Inductance and turn-to-turn capacitance, can eliminate the magnetic core hot-spot that conventional transformer exists, Kelvin effect, kindred effect can be made to be changed
Kind, it has the highest power density, the highest efficiency, the lowest electromagnetic interference and the advantage such as the most inexpensive, therefore obtains
Extensively application.Flat surface transformer occurs in that many different concrete methods of realizings at present, and what Application comparison was wide mainly has matrix form
Flat surface transformer, foil flat surface transformer, printed circuit board (PCB) flat surface transformer etc..
Printed circuit board (PCB) flat surface transformer is to use printed circuit board manufacturing process, forms spiral line on multilayer boards
Circle, by connecting to form armature winding or secondary windings by the helical winding of different layers.At present, printed circuit board plane becomes
The connected mode that depressor forms armature winding or secondary windings is more single, if the number of turn of primary coil is more, and required print
The number of plies of printed circuit board is the most, thus can increase the thickness of flat surface transformer, is unfavorable for the development of its flattening.
Chinese patent CN202110931U discloses a kind of flat surface transformer, including an iron core and at least one piece of pcb board, its
In, iron core is overall is looped around the periphery of two pieces of pcb boards in flat annular, and pcb board is multi-layer PCB board, the Copper Foil line in pcb board
Forming coil, in two pieces of pcb boards, the pin on one of pcb board uses many PIN contact pin form, and on another block pcb board
Corresponding pin uses aperture form, and the pin of each contact pin form is inserted in the aperture of corresponding pin, makes this two pieces of pcb boards
The coil of middle correspondence is connected and forms a closing coil.Copper Foil line on this patent utilization pcb board is as coil so that transformation
Long-pending less, the weight of body becomes lighter, but, after using PIN contact pin to be connected by two pieces of PCB, the number of turn fixed can only be realized
Ratio, function singleness.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of plane based on double-sided printed-circuit board
Transformator, the positive and negative of every printed circuit board (PCB) are respectively provided with patterned layer, when after two-layer printed circuit board stacking, due to tap node
Lead-in wire node is provided with conductive layer, it is not necessary to use upper and lower two layer printed circuit boards of can realizing of PIN contact pin to reach the standard grade circle district
Parallel connection, reduce 1/2nd by the number of plies of printed circuit board (PCB) in the case of equal turn ratio, beneficially flat surface transformer
Thinning develops；And the tap node of same layer printed circuit board (PCB) positive and negative is connected by the conduction element of printed circuit intralaminar part, real
Now with the series connection of coil area, layer printed circuit board positive and negative, it is also possible to by connecting assembly by the line of different layers printed circuit board (PCB)
Circle district carries out in series or in parallel, enriches the connected mode of armature winding or secondary windings；And connect the contact pin of assembly with
Locating button cooperates, contact pin adjustable in length, can realize the different numbers of turn of armature winding and secondary windings according to the actual requirements
Ratio, diverse in function.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of flat surface transformer based on double-sided printed-circuit board, including magnetic core, printed circuit board (PCB), described magnetic core is looped around
The periphery of printed circuit board (PCB), described printed circuit board (PCB) is multiple structure, in addition to the front of the printed circuit board (PCB) of top layer, remaining every layer
The back side of the positive and negative of printed substrate and the printed circuit board (PCB) of top layer is provided with patterned layer, and upper printed circuit board
The patterned layer of reverse side overlaps up and down with the patterned layer in lower layer printed circuit board front；Described patterned layer includes coil area, draws
Line node and tap node, wherein, the surface configuration of coil area has insulating barrier, described lead-in wire node to be arranged on outside coil area
Side, tap node is arranged on the inner ring of coil area, and one end of coil area and lead-in wire Node connectedness, the other end is with tap node even
Connect；Also include being arranged on the printed circuit board (PCB) front of top layer, for the connection connected the coil area of different layers printed circuit board (PCB)
Assembly.
Specifically, described coil area, lead-in wire node, tap node are made by Copper Foil line.
Further, the tap site position of described same layer printed circuit board (PCB) positive and negative overlaps, and at printed circuit board (PCB)
Be internally provided with the tap node of positive and negative) conduction element that connects.
Further walking ground, described connection assembly includes that plate base, contact pin, locating button, described plate base are arranged on top layer
The top of printed circuit board (PCB), plate base is provided with jack, described jack is the most corresponding with the lead-in wire node of lower section, contact pin
Sequentially pass through jack, lead-in wire node realizes the connection of the coil area on different layers printed circuit board (PCB)；Described locating button is arranged on slotting
The outside in hole, is used for locking contact pin, and after unclamping locating button, contact pin can move up and down adjustment length.
Further, described locating button is annular constrictions structure, and the position contacted with contact pin is provided with insulating properties
Chock insulator matter.
Preferably, described contact pin is provided with graduated scale, and the minimum scale of graduated scale is single-layer printed circuit plate
Thickness.
Preferably, the top of contact pin is provided with insulated handle.
Preferably, described insulating barrier uses insulating resin to be made.
Preferably, the surface of described tap node is provided with conductive layer.
Preferably, described conductive layer uses two-sided conducting resinl to be made.
Compared with prior art, the invention have the benefit that the invention provides a kind of based on double-sided printed-circuit board
Flat surface transformer, the positive and negative of every printed circuit board (PCB) are respectively provided with patterned layer, when after two-layer printed circuit board stacking, owing to taking out
Head node and lead-in wire node are provided with conductive layer, it is not necessary to use upper and lower two layer printed circuit boards that can realize of PIN contact pin to reach the standard grade
The parallel connection in circle district, reduces 1/2nd by the number of plies of printed circuit board (PCB) in the case of equal turn ratio, and beneficially plane becomes
The thinning development of depressor；And the conduction element that the tap node of same layer printed circuit board (PCB) positive and negative is by printed circuit intralaminar part
Connect, it is achieved with the series connection of coil area, layer printed circuit board positive and negative, it is also possible to by connecting assembly by different layers printed circuit
The coil area of plate carries out in series or in parallel, enriches the connected mode of armature winding or secondary windings；And connect assembly
Contact pin cooperates with locating button, contact pin adjustable in length, can realize armature winding according to the actual requirements with secondary windings not
Same turn ratio, diverse in function.
Accompanying drawing explanation
Fig. 1 is the overall schematic of the present invention.
Fig. 2 is the overall schematic of printed circuit board (PCB) positive and negative patterned layer in the present invention.
Figure L1-A is the patterned layer schematic diagram of each layer printed circuit board positive and negative in the present invention to figure L4-B.
Fig. 3 is to connect the structural representation that assembly is connected with printed circuit board (PCB) in the present invention.
Fig. 4-1 to Fig. 4-3 is armature winding in the present invention, the schematic diagram of secondary windings difference connected mode.
Parts thereof in accompanying drawing is entitled:
100-magnetic core, 200-printed circuit board (PCB), 300-patterned layer, 310-coil area, 320-goes between node, and 330-tap is tied
Point, 400-insulating barrier, 500-conductive layer, 600-connects assembly, 610-plate base, 611-jack, 620-contact pin, and 621-insulate
Handle, 630-locating button.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of flat surface transformer based on double-sided printed-circuit board, including magnetic core 100, printed circuit board (PCB)
200, described magnetic core 100 is made up of the upper and lower two pieces E-type magnetic cores electromagnetically coupled to each other, and upper and lower two pieces of E-type magnetic cores are looped around print
The periphery of printed circuit board 200；Printed circuit board (PCB) 200 is at least two-layer, is provided with L1, L2, L3, L4 totally four pieces in the present embodiment
Printed circuit board (PCB) 200, in addition to the front of the printed circuit board (PCB) 200 of top layer, the positive and negative of remaining every layer printed substrate 200 with
And the reverse side of the printed circuit board (PCB) 200 of top layer is provided with patterned layer 300；Patterned layer 300 on each layer printed circuit board 200 is gone here and there
Connection or parallel connection are to constitute armature winding or the secondary windings of flat surface transformer.
As in figure 2 it is shown, patterned layer 300 includes coil area 310, lead-in wire node 320 and tap node 330, coil area
310, lead-in wire node 320 and tap node 330 are made by Copper Foil line, and the surface configuration of coil area 310 has one layer absolutely
Edge layer 400, this insulating barrier 400 is made by insulating resin coating, and tap node 330 is positioned at the inside of coil area 310, lead-in wire
Node 320 is positioned at the outside of coil area 310, and in the present embodiment, the upper and lower of printed circuit board (PCB) 200 is provided with lead-in wire knot
Point 320, one end of coil area 310 is connected with tap node 330, and the other end is connected with one of them lead-in wire node 320.
As schemed shown in L1-A, the top and bottom of printed circuit board (PCB) 200 are provided with four lead-in wire nodes 320 altogether, and e is coil
Tap node 330 within district 310, tetra-terminals of a, b, c, d may be constructed armature winding or the input of secondary windings or output
Terminal.The front of ground floor printed circuit board (PCB) L1 does not set coil area 310, but still is provided with four lead-in wire nodes 320, and ground floor prints
The back side of printed circuit board L1 and second layer printed circuit board (PCB) L2, third layer printed circuit board (PCB) L3, the 4th layer printed circuit board L4
The patterned layer 300 of positive and negative such as schemes L1-B, figure L2-A, figure L2-B, figure L3-A, figure L3-B, figure L4-A, shown in figure L4-B, upper strata
The patterned layer 300 of printed circuit board (PCB) 200 reverse side overlaps with the patterned layer about 300 in lower layer printed circuit board 200 front, and
And the surface-coated in coil area 310 has one layer of insulating barrier being made by insulating resin 400, lead-in wire node 320 is through hole,
And it is internally provided with plain conductor, the surface configuration of tap node 330 has conductive layer 500, conductive layer 500 to use two-sided conduction
Glue is made, and second layer printed circuit board (PCB) L2, third layer printed circuit board (PCB) L3, the inside of the 4th layer printed circuit board L4 are arranged
There is the conduction element connected by the tap node 330 of its positive and negative, after four layer printed circuit boards 200 stack gradually, figure L1-B's
Coil a-e is in parallel with the coil a-e of figure L2-A, and the coil a-e of figure L2-A connects with the coil e-b of figure L2-B, the line of figure L2-B
Circle e-b is in parallel with the coil e-b of figure L3-A, and the coil e-b of figure L3-A connects with the coil d-e of figure L3-B, the coil of figure L3-B
E-d is in parallel with the coil e-d of figure L4-A, and the coil e-d coil c-e in parallel and figure L4-B of figure L4-A connects.
As it is shown on figure 3, be provided with connection assembly 600 in the front of ground floor printed circuit board (PCB) L1, connecting assembly 600 has two
Group, the lead-in wire node 320 of the most corresponding printed circuit board (PCB) 200 upper and lower, often group connects assembly 600 and includes plate base
610, contact pin 620, locating button 630, wherein, plate base 610 is made by isolation material, and plate base 610 is provided with
Jack 611, position and the quantity of described jack 611 are the most corresponding with lead-in wire node 320, have a, b, c, d tetra-in the present embodiment
Lead-in wire node 320, the most upper and lower two groups of plate bases 610 is respectively arranged with two jacks 611, is respectively arranged with insertion in each jack 611
A piece contact pin 620, contact pin 620 sequentially passes through jack 611, lead-in wire node 320, it is achieved the line on different layers printed circuit board (PCB) 200
The connection in circle district 310；Described locating button 630 is arranged on the outside of jack 611, is used for locking contact pin 620, and locating button 630
For annular constrictions structure, the position of its contact pin 620 contact is provided with the chock insulator matter of insulating properties；The top of contact pin 620 is provided with absolutely
Edge handle 621, the outer surface of contact pin 620 is provided with graduated scale, and the minimum scale h of graduated scale is single-layer printed circuit plate
Thickness h；After unclamping locating button 630, the length of contact pin 620 can be adjusted by insulated handle 621, contact pin 620 moves a quarter
Degree represents the connection of the coil area 310 reducing by a layer printed circuit board 200, and contact pin 620 moves down a scale and represents increase by a layer
The connection of the coil area 310 of printed circuit board (PCB) 200, can change armature winding/secondary windings by the length adjusting contact pin 620
The number of turn of coil and the connected mode of coil.
Using terminal a, b as the two of armature winding input terminals, terminal c, d are as two outfans of secondary windings
Son, when the insertion depth of contact pin 620 of a, b, c, d tetra-lead-in wire inter-node is respectively as follows: 3h, 3h, 3h, 4h, after insertion primary around
Group, secondary windings connection mode as shown in Fig. 4-1；When the insertion depth of the contact pin 620 of a, b, c, d tetra-lead-in wire inter-node divides
Be not: 2h, 2h, 3h, 4h, armature winding after insertion, secondary windings connection mode as shown in the Fig. 4-2；Can certainly pass through
Change armature winding and the lead terminal of secondary windings, to realize different coil turns, such as, when with terminal a, d as primary
Two input terminals of winding, b, c are as two lead-out terminals of secondary windings, and the most now, a, b, c, d tetra-goes between inter-node
The insertion depth of contact pin 620 be respectively as follows: 1h, 2h, 3h, 4h, armature winding after insertion, secondary windings connection mode such as Fig. 4-
Shown in 3.
The generation type of armature winding and secondary windings just has variation, and according to practical situation, only need to be by adjusting
The insertion depth of contact pin 620 can realize different input-output ratios, expands its range；The coil of armature winding is with secondary
The coil of level winding mutually embeds, it is ensured that primary coil is combined closely with secondary coil, advantageously reduces Kelvin effect；Often
The surface-coated of layer coil area has one layer of insulating resin, the beneficially internal heat dissipating in intensifier coil district；Printed circuit board (PCB) two-sided
It is provided with coil area, greatly reduces the integral thickness of flat surface transformer, be conducive to the development of its further flattening.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as using
The design principle of the present invention, and carry out non-creativeness work on this basis and the change made, all should belong to the present invention's
Within protection domain.
Claims (9)
1. a flat surface transformer based on double-sided printed-circuit board, including magnetic core (100), printed circuit board (PCB) (200), described magnetic
Core (100) is looped around the periphery of printed circuit board (PCB) (200), it is characterised in that: described printed circuit board (PCB) (200) is multiple structure,
In addition to the front of the printed circuit board (PCB) (200) of top layer, the positive and negative of remaining every layer printed substrate (200) and the print of top layer
The back side of printed circuit board (200) is provided with patterned layer (300), and the patterned layer (300) of upper printed circuit board (200) reverse side
Overlap up and down with the patterned layer (300) in lower layer printed circuit board (200) front；Described patterned layer (300) includes coil area
(310), go between node (320) and tap node (330), and wherein, the surface configuration of coil area (310) has insulating barrier (400),
Described lead-in wire node (320) is arranged on the outside of coil area (310), and tap node (330) is arranged on the interior of coil area (310)
Circle, the one end of coil area (310) is connected with lead-in wire node (320), and the other end is connected with tap node (330)；Also include arranging
In printed circuit board (PCB) (200) front of top layer, for the company that the coil area (310) of different layers printed circuit board (PCB) (200) is connected
Connected components (600)；Described connection assembly (600) includes plate base (610), contact pin (620), locating button (630), described plate
Base (610) is arranged on the top of the printed circuit board (PCB) (200) of top layer, and plate base (610) is provided with jack (611), institute
Stating jack (611) the most corresponding with the lead-in wire node (320) of lower section, contact pin (620) sequentially passes through jack (611), lead-in wire node
(320) connection of coil area (310) on different layers printed circuit board (PCB) (200) is realized；Described locating button (630) is arranged on jack
(611) outside, is used for locking contact pin (620), and after unclamping locating button (630), it is long that contact pin (620) can move up and down adjustment
Degree.
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 1, it is characterised in that: described line
Circle district (310), lead-in wire node (320), tap node (330) are made by Copper Foil line.
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 1, it is characterised in that: described same
Tap node (330) position of one layer printed circuit board (200) positive and negative overlaps, and sets in the inside of printed circuit board (PCB) (200)
It is equipped with the conduction element connected by the tap node (330) of positive and negative.
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 1, it is characterised in that: described fixed
Position button (630) is annular constrictions structure, and the position contacted with contact pin (620) is provided with the chock insulator matter of insulating properties.
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 1, it is characterised in that: described slotting
Graduated scale, and the thickness that the minimum scale of graduated scale is single-layer printed circuit plate (200) it is provided with on pin (620).
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 1, it is characterised in that: contact pin
(620) top is provided with insulated handle (621).
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 1, it is characterised in that: described absolutely
Edge layer (400) uses insulating resin to be made.
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 1, it is characterised in that take out described in:
The surface of head node (330) is provided with conductive layer (500).
A kind of flat surface transformer based on double-sided printed-circuit board the most according to claim 8, it is characterised in that lead described in:
Electric layer (500) uses two-sided conducting resinl to be made.
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| CN201610958371.XA CN106328357B (en) | 2016-11-03 | 2016-11-03 | A kind of flat surface transformer based on double-sided printed-circuit board |
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| CN201610958371.XA CN106328357B (en) | 2016-11-03 | 2016-11-03 | A kind of flat surface transformer based on double-sided printed-circuit board |
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| CN106328357A true CN106328357A (en) | 2017-01-11 |
| CN106328357B CN106328357B (en) | 2017-10-20 |
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| CN109038864A (en) * | 2018-08-08 | 2018-12-18 | 西安电子科技大学 | Rotate energy-transfer device |
| RU2730248C2 (en) * | 2018-11-29 | 2020-08-19 | Михаил Яковлевич Эйнгорин | Substation for power supply |
| RU2730247C2 (en) * | 2018-11-29 | 2020-08-19 | Михаил Яковлевич Эйнгорин | Disc voltage and current transformer |
| RU2731773C2 (en) * | 2018-11-29 | 2020-09-08 | Михаил Яковлевич Эйнгорин | Inverter converter |
| CN112750618A (en) * | 2020-12-28 | 2021-05-04 | 天津大学 | Preparation method of planar transformer with odd turn ratio |
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|---|---|
| CN106328357B (en) | 2017-10-20 |
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