CN208848724U - PCB flat transformer - Google Patents
PCB flat transformer Download PDFInfo
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- CN208848724U CN208848724U CN201821136096.4U CN201821136096U CN208848724U CN 208848724 U CN208848724 U CN 208848724U CN 201821136096 U CN201821136096 U CN 201821136096U CN 208848724 U CN208848724 U CN 208848724U
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Abstract
The utility model provides a kind of PCB flat transformer, including two E-type magnetic cores and armature winding and secondary windings.PCB flat transformer further includes total pcb board between two E-type magnetic cores, and total pcb board is one piece of monoblock type pcb board, it includes the sub- pcb board of multilayer being superimposed with each other, part surface layer and welding surface layer.The centre of every straton pcb board is designed with the centre bore interted for E-type magnetic core.The coil windings of corresponding the number of turns are equipped on each straton pcb board, the both ends of each coil windings are equipped with electric connecting point, and the both ends of every straton pcb board are equipped with several through-holes, are attached between the electric connecting point and corresponding through-hole in coil windings by plating.Sub- pcb board includes the sub- pcb board of several layers first and the sub- pcb board of several layers second.It is electrically connected between coil windings on the sub- pcb board of each layer first by the corresponding through-hole, forms armature winding.It is electrically connected between coil windings on the sub- pcb board of each layer second by corresponding through-hole, forms secondary windings.
Description
Technical field
The utility model relates to transformers, and in particular to a kind of PCB flat transformer.
Background technique
Present electronic product is towards miniaturization, lightening trend development.It is corresponding, the charger or standby electricity of electronic product
The small form factor requirements in source are also higher and higher, this requires the volume of transformer to be made smaller, but meeting while volume of transformer becomes smaller
So that phenomena such as safety distance of primary and secondary winding reduces, is easy to happen short circuit is easy to reduce transformer insulated grade
Winding insulation is damaged, the service life for reducing transformer is influenced, carrys out hidden criminal to the safety belt of the person and property.In addition, to disappear
Except the harmonic wave or reduction electromagnetic interference of transformer, transformer also increases shielded layer either ancillary coil sometimes, again will in this way
The volume of transformer is further increased, to limit the volume of electronic product, prevents electronic product from being made smaller.
Traditional PCB transformer, is made of muti-piece PCB, has the characteristics that flat, small in size, but does not have inside PCB
Faraday shield layer does not have enough safety distances between first, is unable to satisfy the requirement for reinforcing insulation and anti-electromagnetic interference.Separately
Outside, traditional PCB transformer has end feet in the lead-out wire of primary and secondary, is not that the PCB of transformer is attached directly to the PCB of circuit, limitation
The mounting height of product.Therefore, in view of the deficiencies of the prior art, it is necessary to design a kind of PCB flat transformer, both there is body
The small feature low with leakage inductance of product, and the requirement such as meet the reinforcement insulation of transformer and prevent electromagnetic interference.
Summary of the invention
The purpose of this utility model is to provide one kind both had the characteristics that it is small in size low with leakage inductance, and meet reinforcement absolutely
Edge and the monoblock type PCB flat transformer for preventing the requirements such as electromagnetic interference, and the transformer does not need additional stitch, can incite somebody to action
The PCB of transformer itself is attached directly on circuit board, can greatly reduce the mounting height of product.
To achieve the above object, PCB flat transformer provided by the utility model include two symmetrical E-type magnetic cores and
Armature winding and secondary windings between two E-type magnetic cores.PCB flat transformer further include be set to two E-type magnetic cores it
Between one piece of total pcb board, which includes the sub- pcb board of multilayer being superimposed with each other, the sub- pcb board top of multilayer that overlapping is arranged in
The part surface layer in portion and the welding surface layer of the sub- pcb board bottom of the multilayer that overlapping is set.The centre of every straton pcb board is designed with
The centre bore interted for E-type magnetic core.The coil windings of corresponding the number of turns are equipped on each straton pcb board, each coil windings
Both ends are equipped with electric connecting point, and the both ends of every straton pcb board are equipped with several through-holes, the electrical connection in coil windings
Point is attached between corresponding through-hole by plating.Sub- pcb board includes the sub- pcb board of several layers first and several layers second
Sub- pcb board.Wherein, electrical connection, shape are realized by the corresponding through hole between the coil windings on the sub- pcb board of each layer first
At armature winding.Electrical connection is realized by corresponding through hole between coil windings on the sub- pcb board of each layer second, is formed secondary
Winding.
Preferably, the quantity of the second sub- pcb board is four layers, and four layer of second sub- pcb board is superimposed with each other.
The quantity of first sub- pcb board is four layers, wherein two layers of first sub- pcb boards are superimposed with each other and are located at the second sub- pcb board
Top, another two layers of first sub- pcb boards are superimposed with each other and are located at the lower section of the second sub- pcb board.
Preferably, the coil windings on four layer of first sub- pcb board are sequentially connected in series, and form armature winding.
Direction from top to bottom, the coil windings on three layer of second sub- pcb board of the top are sequentially connected in series, third layer second
Coil windings on sub- pcb board are in parallel with the coil windings on the sub- pcb board of the bottom second, form secondary windings.
Preferably, between the sub- pcb board of top second and the first sub- pcb board above the sub- pcb board of top second
Equipped with first screen layer, between the sub- pcb board of the bottom second and the first sub- pcb board below the sub- pcb board of the bottom second
Equipped with secondary shielding layer.First screen layer and secondary shielding layer are the sub- pcb board of third that surface is equipped with copper foil.
Preferably, the sub- pcb board of multilayer further includes two layers of the 4th sub- pcb boards, and one layer of the 4th sub- pcb board setting is in the first shielding
Between layer and the first sub- pcb board above first screen layer, the sub- pcb board of another layer the 4th is arranged in secondary shielding layer and position
Between the first sub- pcb board below the secondary shielding layer.By corresponding logical between coil windings on two layers of the 4th sub- pcb boards
Electrical connection is realized at hole, forms primary auxiliary winding.
Preferably, the sub- pcb board of multilayer further includes two layers of the 5th sub- pcb boards, and two layers of the 5th sub- pcb boards settings are in the second layer the
Between two sub- pcb boards and the sub- pcb board of third layer second, by corresponding logical between the coil windings on two layers of the 5th sub- pcb boards
Electrical connection is realized at hole, forms secondary auxiliary winding.
Preferably, be on each straton pcb board it is I-shaped, the centre of I-shaped sub- pcb board is equipped with centre bore, I-shaped
The two sides of sub- pcb board are symmetrically arranged with fluting.The center pillar of E-type magnetic core is arranged in the centre bore of I-shaped sub- pcb board, E-type magnetic core
Two side columns be arranged in the fluting of I-shaped sub- pcb board two sides.
Preferably, each straton pcb board includes PCB substrate and bonds the coil being integrated by PP piece and PCB substrate
Or copper foil.PCB substrate is made of FR-4 glass fiber material.
By above-mentioned scheme as it can be seen that armature winding and secondary windings are arranged in PCB the utility model PCB flat transformer
On plate, and one layer of shielded layer being arranged on pcb board is respectively provided between primary and secondary.In addition, being also provided on pcb board
Primary auxiliary winding and secondary auxiliary winding.
Relative to existing transformer, the utility model has the beneficial effects that: the utility model is by armature winding, secondary
Winding, shielded layer, primary auxiliary winding, secondary auxiliary winding etc. are separately positioned on the flat sub- pcb board of multilayer, multilayer
Pcb board integrates one piece of total pcb board again.Using the characteristics of mutually insulated, effectively being enhanced between winding between each straton pcb board
The class of insulation.In addition, coil etc. is arranged on pcb board, the volume of transformer is greatly reduced, and due to the extraction of coil
Line can be attached directly on pcb board, then be connected in circuit by the stitch of PCB, and the lead-out wire of such coil is without using needle
Foot, further reduced the height of transformer, to reduce the volume of the charger or backup power source using the transformer.
Detailed description of the invention
Fig. 1 is the structure chart at the first visual angle of the utility model PCB flat transformer embodiment.
Fig. 2 is the structural exploded view of the utility model PCB flat transformer embodiment.
Fig. 3 is the structure chart at the second visual angle of the utility model PCB flat transformer embodiment.
Fig. 4 is the structural schematic diagram of total pcb board in the utility model PCB flat transformer embodiment.
Fig. 5 is the tiling decomposition texture schematic diagram of total pcb board in the utility model PCB flat transformer embodiment.
Fig. 6 is the structural schematic diagram of sub- pcb board 311 shown in fig. 5.
Fig. 7 is the schematic diagram of the utility model PCB flat transformer embodiment.
Specific embodiment
The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.In order to which the present embodiment is better described,
The certain attachmentes of attached drawing have omission, zoom in or out；To those skilled in the art, in attached drawing certain known features and
It illustrates to omit will be understood by.
Referring to Fig. 1 and Fig. 2, the PCB flat transformer in the present embodiment includes two symmetrical E-type magnetic cores 21 and E-type magnetic
Core 22, E-type magnetic core 1 include center pillar 211 and side column 212 and side column 213 that 211 two sides of center pillar are arranged in.Likewise, E-type magnetic
Core 22 includes center pillar 221 and side column 222 and side column 223 that 221 both sides of center pillar are arranged in.E-type magnetic core 21 and E-type magnetic core 22 are right
It connects.One piece of total pcb board 30 is equipped between E-type magnetic core 21 and E-type magnetic core 22.
Referring to Fig. 3, one end of total pcb board 30 is set there are five through-hole, respectively through-hole 1, through-hole 2, through-hole 3, through-hole 4 and logical
Five through-holes such as hole 5；The other end of total pcb board 30 sets that there are four through-holes, is through-hole 6, through-hole 7, through-hole 8 and through-hole 9 etc. respectively
Four through-holes.Through-hole 1 to nine through-holes such as through-hole 9 all penetrate through the total pcb board 30 of monolith.
Referring to fig. 4, total pcb board 30 includes the sub- pcb board of multilayer being superimposed with each other.As general pcb board, total pcb board 3
Further include the part surface layer 30a being arranged at the top of the sub- pcb board of overlapping, and the welding of the sub- pcb board bottom of overlapping is set
Surface layer 30b.In the present embodiment, sub- pcb board shares 14 layers, direction as shown in Figure 4, be followed successively by from top to bottom sub- pcb board 301,
Sub- pcb board 302, sub- pcb board 303, sub- pcb board 304, sub- pcb board 305, sub- pcb board 306, sub- pcb board 307, sub- pcb board 308,
The 14 straton PCB such as sub- pcb board 309, sub- pcb board 310, sub- pcb board 311, sub- pcb board 312, sub- pcb board 313 and sub- pcb board 314
Plate.The top of sub- pcb board 301 is arranged in part surface layer 30a, and the lower section of sub- pcb board 314 is arranged in welding surface layer 30b.Part surface
Mutually insulated is kept between layer 30a, welding each layer such as surface layer 30b and 14 straton pcb boards.Using between the pcb board of different layers
The characteristic of mutually insulated, can be by being arranged coil on each layer pcb board, while each straton pcb board coil being made to keep mutual
Insulation.Can effectively avoid in this way reduces the distance between primary and secondary coil because the volume of transformer becomes smaller, so that winding occur
The problems such as insulation damages.And relative to traditional transformer by the way that the design of interlayer insulating film is arranged between primary and secondary coil,
There are the advantages such as the good, simple process of insulation effect using pcb board insulation.
Referring to Fig. 5, part surface layer 30a, welding surface layer 30b and 14 straton pcb boards are that geomery is consistent I-shaped,
The centre of I-shaped part surface layer 30a, welding surface layer 30b and 14 straton pcb boards be designed with intert for E-type magnetic core it is identical
Centre bore, and an identical fluting is each provided in the two sides of centre bore.I.e. total pcb board 30 be it is intermediate be equipped with centre bore, two
Side sets slotted I-shaped.By taking sub- pcb board 311 as an example, referring to Fig. 6, the centre of sub- pcb board 311 is equipped with centre bore 311a,
The two sides of centre bore 311a are respectively equipped with fluting 311b and fluting 311c.When E-type magnetic core and sub- pcb board 311 cooperate, E-type magnetic
The center pillar of core passes through centre bore 311a, and two side columns of E-type magnetic core are separately positioned in fluting 311b and fluting 311c.Total PCB
Plate 30 is I-shaped structure, facilitates the cooperation for further stablizing magnetic core and total pcb board 30.
As seen from Figure 5, one end of part surface layer 30a, welding surface layer 30b and 14 straton pcb boards are both provided with through-hole 1, lead to
Through-hole 6, through-hole 7, through-hole 8 and through-hole 9 is arranged in hole 2, through-hole 3, through-hole 4 and through-hole 5, the other end.Through-hole 1 is specific to through-hole 9
Position distribution can be with further reference to sub- pcb board 311 shown in fig. 6.It should be noted that in sub- pcb board 311 shown in Fig. 6,
Through-hole 5 is covered by coil 300, and through-hole 5 is shown to the specific location for being intended merely to more clearly illustrate through-hole 5 in Fig. 6.It can be with
Find out, the position distribution of through-hole 1 to 9 through-holes such as through-hole 9 on each laminate shown in fig. 5 is consistent, when each laminate is superimposed with each other
When, through-hole 1 to the through-hole 9 on each laminate is just overlapped, and the through-hole 1 on each laminate to the overlapping of through-hole 9 forms shown in Fig. 3 total
Through-hole 1 to 9 on pcb board 30.
In addition, it is equal to be additionally provided with several quantity on sub- pcb board 301 to the surface of 14 sub- pcb boards such as sub- pcb board 314,
Consistent 7 through-holes of position distribution.Still by taking sub- pcb board 311 as an example, referring to Fig. 6, sub- pcb board 311 is between through-hole 2 and through-hole 3
Equipped with through-hole 10, it is equipped with through-hole 11, through-hole 12 and through-hole 13 in the top edge of centre bore 311a, between through-hole 7 and through-hole 8 also
Equipped with through-hole 14, through-hole 15 and through-hole 16.The surface of remaining 13 pieces of sub- pcb board is equally respectively equipped with through-hole in same position
10 to 7 through-holes such as through-holes 16.When part surface layer 30a, welding surface layer 30b and 14 straton pcb boards are superimposed with each other into total pcb board 30
When, through-hole 1 to equal 9 through-holes of through-hole 9 penetrates through the total pcb board 30 of monolith, and through-hole 10 to 7 through-holes such as through-hole 16 then penetrates through 14 stratons
Pcb board.
In the present embodiment, it is equipped on each straton pcb board on the every straton pcb board of coil windings 300(of corresponding the number of turns
Dash area), coil windings 100 are etched by copper foil.The both ends of each coil windings are equipped with electric connecting point, electrically
Tie point, that is, coil windings end.According to the cabling of the coil windings on every piece of sub- pcb board, the both ends of coil windings respectively extend
Onto a through-hole, the electric connecting point at coil windings both ends is fixedly connected on corresponding through-hole by plating, then
Coil windings on different sub- pcb boards can to pass through the modes such as plate bonding real for the through hole corresponding to its electric connecting point
It is now electrically connected, so that the coil windings on different sub- pcb boards be connected, forms the bigger coil of the number of turns.For this reality
The transformer in example is applied, through-hole 1 to equal 9 through-holes of through-hole 9 is external connection through-hole, and through-hole 10 to 7 through-holes such as through-hole 16 is
Inside connection through-hole.External connection through-hole refers to the through-hole of coil windings and external connection on pcb board, be equivalent to coil around
The pin of group.Inside connection through-hole refers to the through-hole for connecting the coil windings on different sub- pcb boards.
The connection type of coil windings on each straton pcb board is as follows:
Referring to Fig. 5 and Fig. 7, the four straton PCB such as sub- pcb board 301, sub- pcb board 302, sub- pcb board 313 and sub- pcb board 314
Coil windings on plate are serially connected, and form armature winding 41.
Specifically, coil windings one end on sub- pcb board 301 is connected to through-hole 3, the other end is connected to through-hole 12.Sub- PCB
Coil windings one end on plate 302 is connected to through-hole 12, and the other end is connected to through-hole 10.On sub- pcb board 301 and sub- pcb board 302
Coil windings by overlapping through-hole 12 be electrically connected.Coil windings one end on sub- pcb board 313 is connected to through-hole 10, another
End is connected to through-hole 13.Coil windings on sub- pcb board 302 and sub- pcb board 313 are electrically connected by the through-hole 10 of overlapping.Sub- PCB
Coil windings one end on plate 314 is connected to through-hole 13, and the other end is connected to through-hole 1.On sub- pcb board 313 and sub- pcb board 314
Coil windings by overlapping through-hole 13 be electrically connected.In this implementation, sub- pcb board 301, sub- pcb board 302,313 and of sub- pcb board
Coil windings on the four straton pcb boards such as sub- pcb board 314 are multiturn coil, four groups of multiturn coils on four straton pcb boards around
Group, which is serially connected, forms armature winding 41.Through-hole 1 and through-hole 3 are then equivalent to two pins of armature winding, pass through through-hole 1
Armature winding 41 is accessed into external circuit with through-hole 3.
Coil windings on sub- pcb board 305, sub- pcb board 306, sub- pcb board 309 and sub- pcb board 310 are connected with each other, and are formed
Secondary windings 42.
Specifically, coil windings one end on sub- pcb board 305 is connected to through-hole 6, the other end is connected to through-hole 14.Sub- PCB
Coil windings one end on plate 306 is connected to through-hole 14, and the other end is connected to through-hole 15.On sub- pcb board 305 and sub- pcb board 306
Coil windings by overlapping through-hole 14 be electrically connected.Coil windings one end on sub- pcb board 309 is connected to through-hole 15, another
End is connected to through-hole 9.Coil windings on sub- pcb board 306 and sub- pcb board 309 are electrically connected by the through-hole 15 of overlapping.Sub- PCB
Coil windings one end on plate 310 is connected to through-hole 15, and the other end is connected to through-hole 9.On sub- pcb board 309 and sub- pcb board 310
Coil windings by overlapping through-hole 15 and through-hole 9 be electrically connected in parallel to each other.Sub- pcb board 305, sub- pcb board 306, sub- pcb board
309 and sub- pcb board 310 on etc. coil windings on four straton pcb boards be single-turn circular coil, four single-turn circular coils, which connect, to be formed time
Grade winding 42, secondary windings 42 access external circuit by through-hole 6 and through-hole 9.
It can thus be seen that armature winding 41 and secondary windings 42 are distributed in the son of each layer mutually insulated by the present embodiment
On pcb board, using the characteristic of mutually insulated between each straton pcb board, while reducing volume of transformer, enhance armature winding
The class of insulation between secondary windings.
Coil windings on sub- pcb board 303 and sub- pcb board 312 connect to form primary auxiliary winding 411.Sub- pcb board 303
It is single-turn circular coil with the coil windings on sub- pcb board 312.Coil windings one end on sub- pcb board 303 is connected to through-hole 2, separately
One end is connected to through-hole 11.Coil windings one end on sub- pcb board 312 is connected to through-hole 11, and the other end is connected to through-hole 4.Son
Coil windings on pcb board 303 and sub- pcb board 312 are electrically connected to form primary auxiliary winding 411 by the through-hole 11 of overlapping, just
Grade auxiliary winding 411 connects external circuit by through-hole 2 and through-hole 4.
Coil windings on sub- pcb board 307, sub- pcb board 308 connect to form secondary auxiliary winding 421.With primary auxiliary around
Group 411 is similar, and the coil windings on sub- pcb board 307 and sub- pcb board 308 are single-turn circular coil.Coil on sub- pcb board 307 around
Group one end is connected to through-hole 7, and the other end is connected to through-hole 16.Coil windings one end on sub- pcb board 308 is connected to through-hole 16,
The other end is connected to through-hole 8.Coil windings on sub- pcb board 307 and sub- pcb board 308 are electrically connected shape by the through-hole 16 of overlapping
At secondary auxiliary winding 421, secondary auxiliary winding 421 connects external circuit by through-hole 7 and through-hole 8.
Single-turn circular coil is provided on sub- pcb board 304 and sub- pcb board 311.Different from sub- pcb board 303, sub- pcb board 305 etc.
Both ends on sub- pcb board are both connected to the single-turn circular coil of through-hole, and single-turn circular coil one end on sub- pcb board 304 is connected to through-hole 5,
The other end is not attached to any one through-hole (ground connection).Equally, single-turn circular coil one end on sub- pcb board 311 is connected to through-hole 5,
The other end is not attached to any one through-hole (ground connection).By through-hole 5 by the single turn line on sub- pcb board 304 and sub- pcb board 311
Circle ground connection, then the single-turn circular coil on sub- pcb board 304 and sub- pcb board 311 is equivalent to one piece of copper foil, thus in armature winding
One layer of shielded layer 43 is respectively formed with the both ends of secondary windings.
Each straton pcb board in the present embodiment includes PCB substrate and is bonded as one by PP piece and PCB substrate
The coil or copper foil of body.Wherein, PCB substrate is made of FR-4 glass fiber material.Glass fiber material can further strengthen pcb board
Insulating properties makes winding insulation sufficiently meet the class of insulation of electrical safety standard.
In conclusion the PCB flat transformer of the present embodiment is that armature winding and secondary windings are arranged in the sub- PCB of multilayer
On plate, then corresponding coil on each straton pcb board connected, both effectively reduces volume of transformer, the insulating properties of pcb board
It ensure that the class of insulation of armature winding and secondary windings is met the requirements.One layer is respectively provided between primary and secondary to be arranged in pcb board
On shielded layer, primary auxiliary winding and secondary auxiliary winding are provided with also on pcb board, can effectively except the harmonic wave of transformer and
Reduce electromagnetic interference.
The lead-out wire of coil can be attached directly on pcb board, for the through-hole 1 on pcb board 30 to nine outsides such as through-hole 9
Through-hole is connected, then is welded in circuit by using stitch, the lead-out wire of such coil further reduced without using end feet
The height of transformer, to reduce the volume of the charger or backup power source using the transformer.
The above is only the preferred embodiment of the present invention, is not intended to limit the invention.It is all in the utility model
Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model
Within enclosing.
Claims (8)
1.PCB flat transformer, including two symmetrical E-type magnetic cores and between two E-type magnetic cores it is primary around
Group and secondary windings, it is characterised in that:
The PCB flat transformer further includes being set to one piece of total pcb board between two E-type magnetic cores, and total pcb board includes
The sub- pcb board of the multilayer being superimposed with each other；The centre of sub- pcb board described in multilayer is equipped with the centre bore interted for the E-type magnetic core；
The coil windings of corresponding the number of turns are equipped on each layer pcb board, the both ends of each coil windings are equipped with
Electric connecting point, and the both ends of each sub- pcb board are equipped with several through-holes, the electric connecting point in the coil windings
It is attached between the corresponding through-hole by plating；
Sub- pcb board described in multilayer includes the sub- pcb board of several layers first and the sub- pcb board of several layers second；The sub- PCB of each layer described first
By realizing electrical connection in the corresponding through hole between coil windings on plate, the armature winding is formed；Described in each layer
By realizing electrical connection in the corresponding through hole between coil windings on second sub- pcb board, the secondary windings is formed；
Shielded layer, the shielding layer grounding are provided between adjacent the described first sub- pcb board and the second sub- PCB.
2. PCB flat transformer according to claim 1, it is characterised in that:
The quantity of the second sub- pcb board is four layers, and four layers of second sub- pcb board are superimposed with each other；
The quantity of the first sub- pcb board is four layers, and two layers of first sub- pcb board is superimposed with each other and is located at second son
The top of pcb board, another two layers of first sub- pcb board are superimposed with each other and are located at the lower section of the described second sub- pcb board.
3. PCB flat transformer according to claim 2, it is characterised in that:
Coil windings on first sub- pcb board described in four layers are sequentially connected in series, and form the armature winding；
Direction from top to bottom, the coil windings on the second sub- pcb board of three layers of the top are sequentially connected in series, described in third layer
Coil windings on second sub- pcb board are in parallel with the coil windings on the described in the bottom second sub- pcb board, formed it is described it is secondary around
Group.
4. PCB flat transformer according to claim 2 or 3, it is characterised in that:
The first shielding is equipped between the sub- pcb board of top second and the first sub- pcb board above the sub- pcb board of top second
Secondary shielding is equipped between layer, the sub- pcb board of the bottom second and the first sub- pcb board below the sub- pcb board of the bottom second
Layer；The first screen layer and the secondary shielding layer are the sub- pcb board of third that surface is equipped with copper foil.
5. PCB flat transformer according to claim 4, it is characterised in that:
Sub- pcb board described in multilayer further includes two layers of the 4th sub- pcb boards, and one layer of the 4th sub- pcb board is arranged in first screen
It covers between layer and the first sub- pcb board above the first screen layer, the sub- pcb board of another layer the described 4th is arranged described
Between secondary shielding layer and the first sub- pcb board below the secondary shielding layer；Line on two layers of the 4th sub- pcb board
It encloses between winding by realizing electrical connection in the corresponding through hole, forms primary auxiliary winding.
6. PCB flat transformer according to claim 5, it is characterised in that:
Sub- pcb board described in multilayer further includes two layers of the 5th sub- pcb boards, and two layers of the 5th sub- pcb board setting is described in the second layer
Between second sub- pcb board described in second sub- pcb board and third layer, lead between the coil windings on two layers of the 5th sub- pcb board
It crosses and realizes electrical connection in the corresponding through hole, form secondary auxiliary winding.
7. PCB flat transformer according to claim 6, it is characterised in that:
Be on each layer pcb board it is I-shaped, the centre of the I-shaped sub- pcb board is equipped with centre bore, the I-shaped
The two sides of type pcb board are symmetrically arranged with fluting；The centre bore of the I-shaped sub- pcb board is arranged in the center pillar of the E-type magnetic core
In, two side columns of the E-type magnetic core are arranged in the fluting of the I-shaped sub- pcb board two sides.
8. PCB flat transformer according to claim 6, it is characterised in that:
Each layer pcb board include PCB substrate and by PP piece and the PCB substrate coil that is integrated of bonding or
Copper foil；The PCB substrate is made of FR-4 glass fiber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821136096.4U CN208848724U (en) | 2018-07-18 | 2018-07-18 | PCB flat transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821136096.4U CN208848724U (en) | 2018-07-18 | 2018-07-18 | PCB flat transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208848724U true CN208848724U (en) | 2019-05-10 |
Family
ID=66353475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821136096.4U Active CN208848724U (en) | 2018-07-18 | 2018-07-18 | PCB flat transformer |
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| Country | Link |
|---|---|
| CN (1) | CN208848724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706899A (en) * | 2019-09-26 | 2020-01-17 | 青岛鼎信通讯股份有限公司 | High-speed magnetic coupling PCB transformer applied to terminal and ammeter scheme |
| 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 |
-
2018
- 2018-07-18 CN CN201821136096.4U patent/CN208848724U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706899A (en) * | 2019-09-26 | 2020-01-17 | 青岛鼎信通讯股份有限公司 | High-speed magnetic coupling PCB transformer applied to terminal and ammeter scheme |
| 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 |
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