CN106252042A - A kind of high-frequency electronic transformer and preparation method thereof - Google Patents
A kind of high-frequency electronic transformer and preparation method thereof Download PDFInfo
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- CN106252042A CN106252042A CN201610953867.8A CN201610953867A CN106252042A CN 106252042 A CN106252042 A CN 106252042A CN 201610953867 A CN201610953867 A CN 201610953867A CN 106252042 A CN106252042 A CN 106252042A
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- insulating barrier
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- H—ELECTRICITY
- H01—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
- H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
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- H—ELECTRICITY
- H01—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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/122—Insulating between turns or between winding layers
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Abstract
The present invention provides a kind of structure to simplify, it is little, lightweight to take volume and is easy to the high-frequency electronic transformer produced, including transformer body, transformer body includes the lower insulating lid stacked gradually from the bottom to top, is provided with connection the first insulating barrier of conductiving point, coil groups, the second insulating barrier being provided with extraction electrode and upper insulating lid；Lower insulating lid is provided with introducing electrode, and the connection conductiving point on the first insulating barrier connects with introducing electrode；Coil groups includes the N group single-piece stacked gradually from the bottom to top, and N is the natural number more than or equal to 1；Single-piece includes the 3rd insulating barrier and the 4th insulating barrier of stacking from the bottom to top, and the 3rd insulating barrier is printed on coil, and the 4th insulating barrier is provided with conductiving point.Invention additionally discloses the manufacture method of a kind of above-mentioned high-frequency electronic transformer, whole processing step is simplified；By wet method casting film technique, can realize batch production, properties of product concordance is good；Abandon all artificial spooling equipments, assemble the equipment such as immersion oil, low cost.
Description
Technical field
The present invention relates to transformer technology field, be specifically related to a kind of high-frequency electronic transformer and preparation method thereof.
Background technology
At present the development trend of Switching Power Supply be in hgher efficiency, volume is less, weight is lighter.And traditional isolating transformer
The further development of Switching Power Supply is seriously constrained at aspects such as efficiency, volume, weight.
Simultaneously because the major parameter that transformator relates to has voltage, electric current, frequency, no-load voltage ratio, temperature, magnetic core u value, leakage
Anti-, loss, overall dimensions etc., so cannot have ready-made transformator alternative always, often as other electronic devices and components
Often to select magnetic core and winding conducting wire through loaded down with trivial details calculating, and winding technique also has bigger shadow to the performance of transformator
Ringing, many important parameters of transformator are difficult to measure in addition, bring certain blindness to using, are difficult in frequency response, leakage
The aspects such as anti-, volume and heat radiation reach promising result.
In sum, be badly in need of a kind of structure simplify, take volume little, lightweight and be easy to produce high-frequency electronic transformer
To solve problems of the prior art.
Summary of the invention
Present invention aim at providing a kind of structure to simplify, to take volume little, lightweight and be easy to the high-frequency electronic produced
Transformator, concrete technical scheme is as follows:
A kind of high-frequency electronic transformer, including transformer body, described transformer body includes stacking gradually from the bottom to top
Lower insulating lid, be provided with connection the first insulating barrier of conductiving point, coil groups, the second insulating barrier being provided with extraction electrode and upper insulation
Lid；
Described lower insulating lid is provided with introducing electrode, and the connection conductiving point on the first insulating barrier is with described introducing electrode even
Logical；
Described coil groups includes the N group single-piece stacked gradually from the bottom to top, and N is the natural number more than or equal to 1；Described single-piece
Including the 3rd insulating barrier and the 4th insulating barrier of stacking from the bottom to top, described 3rd insulating barrier is printed on coil, the described 4th
Insulating barrier is provided with conductiving point；In single-piece described in first group: one end of described coil is led with the connection on described first insulating barrier
Electricity point connection, its other end connects with the conductiving point on described 4th insulating barrier；In the described single-piece of M group: the one of described coil
The conductiving point held in single-piece described with M-1 group on the 4th insulating barrier connects, in its other end and the described described single-piece of M group the
Conductiving point connection on four insulating barriers, wherein: the M natural number more than 1 and less than or equal to N；4th insulation in the described single-piece of N group
Conductiving point on layer connects with the extraction electrode on described second insulating barrier.
In above technical scheme preferably, described transformer body is cube structure, its length, width and the ratio of height
Value is 2:2:1.
In above technical scheme preferably, the thickness of described lower insulating lid and described upper insulating lid is 37-39 μm.
In above technical scheme preferably, in described 3rd insulating barrier: the outer radius of coil corner is 0.3mm, coil
Inside radius is 0.1mm, and being positioned at the coil of outmost turns with the distance at described 3rd insulating barrier edge is 0.2mm, adjacent two circle coils
Between spacing be 0.2mm.
In above technical scheme preferably, described connection conductiving point and conductiving point cross section in the horizontal plane are ellipse
Shape.
In above technical scheme preferably, the quantity of described introducing electrode is two, and the quantity of described extraction electrode is three
Individual.
Application technical scheme, has the advantages that
(1) high-frequency electronic transformer of the present invention, including transformer body, described transformer body includes depending on from the bottom to top
The lower insulating lid of secondary stacking, the first insulating barrier, coil groups, the second insulating barrier and upper insulating lid, do not have the ferrum of traditional transformer
Core and skeleton, and coil obtained by silk-screen mode so that gained high-frequency electronic transformer of the present invention compared with the prior art (
In the case of identical output is constant), volume-diminished to 1/8, weight saving 50%.
(2) high-frequency electronic transformer of the present invention does not has iron core and skeleton, generally pottery monolithic structure, thus has tradition
High heat dispersion, high resistance to shock that transformator does not has and the advantage such as be easily installed.
(3) in the high-frequency electronic transformer of the present invention: the coupling between adjacent windings is tight, and leakage inductance is little；And coil is by absolutely
Edge layer is surrounded, and insulating barrier is again magnetism guiding access simultaneously, and therefore, the high-frequency electronic transformer of the present invention also has excellent magnetic shield
Function, the ability of anti-outside electromagnetic interference is strong.
(4) Unique physical design of coil group of the present invention so that between coil, conduction loss is little, and then can improve transformation
The efficiency of transmission of device.
The invention also discloses the manufacture method of a kind of above-mentioned high-frequency electronic transformer, specifically include following steps:
The first step: slurry configures, specifically: ferromagnetic oxide powder, resin and organic solvent are joined according to the quality of 5:1:4
Ratio mix homogeneously, obtains mixed liquor；According to the quality proportioning of 1:3, mixed liquor is carried out ball milling with ball-milling medium, and mixing is all
Slurry is i.e. obtained after even；
Second step: curtain coating silk-printing and shaping, specifically: using wet method casting film technique to carry out curtain coating, to obtain transformator thick
Product, comprise the following steps: the lower insulating lid of step a, curtain coating, and print introduces electrode on lower insulating lid；Step b, curtain coating first are exhausted
Edge layer, and print connects conductiving point on the first insulating barrier；Step c, curtain coating coil groups, be cast each single-piece, single-piece the most successively
Casting processes specifically: first curtain coating the 3rd insulating barrier, and silk-screen goes out coil on the 3rd insulating barrier；It is cast the 4th insulation again
Layer, and on the 4th insulating barrier, print conductiving point；Step d, it is cast the second insulating barrier, and prints extraction electrode over the second dielectric；
Insulating lid in step e, curtain coating；
3rd step, second step gained transformator crude product is carried out post processing i.e. obtain high-frequency electronic transformer.
In above technical scheme preferably, described resin is acrylic resin；Described organic solvent is terpineol and ethanol
Mixture, the quality proportioning of terpineol and ethanol is 1:2；Described ball-milling medium is steel ball.
In above technical scheme preferably, the post processing in described 3rd step includes cutting process, binder removal process, burning successively
Knot process, chamfer process, viscous silver process and electroplating process, details are:
Described cutting process is specifically: use wolfram steel cutter that sheet transformator is cut into multiple transformator；
Described sintering process is specifically: by the idiosome through binder removal process in the sintering furnace that temperature is 880 DEG C-900 DEG C
Sinter 0.5-5 hour；
Described electroplating process is specifically: by extraction electrode with introduce and all plate nickel dam and tin layers on electrode, described nickel dam
Thickness is 1.5 μm-3 μm, and the thickness of described tin layers is 3 μm-5 μm.
In above technical scheme preferably, described ferromagnetic oxide powder also needed to carry out pretreatment before carrying out slurry configuration,
Described pretreatment is specifically: ferromagnetic oxide powder is put into the baking oven that temperature is 140 DEG C-160 DEG C and toasts 10-14 hour；Pass through
The pcrmeability of pretreated ferromagnetic oxide powder is 85-115, and its shrinkage factor is 15%-19%.
The manufacture method of the application present invention, effect is:
(1) whole processing step is simplified, it is simple to large-scale production.
(2) the structure design that high-frequency electronic transformer of the present invention is unique, product reliability is high, and becomes for environmental condition
Change, voltage breakdown problem will not be produced because isolation material is aging.
(3) present invention passes through wet method casting film technique, and the selection of technological parameter is reasonable, can realize batch production, and produce
Product consistency of performance is good.
(4) for traditional transformer manufacturer, the manufacture of laminated transformer is the revolutionary mode of production, abandons
The equipment such as all artificial spooling equipments, assembling immersion oil, baking, scolding tin, low cost.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the overall structure schematic diagram of preferred embodiment 1 high-frequency electronic transformer；
Fig. 2 is the circuit theory diagrams of Fig. 1；
Fig. 3 is the detonation configuration schematic diagram of Fig. 1；
Wherein, 1, lower insulating lid, the 2, first insulating barrier, 3, coil groups, 3.1, single-piece, the 3.11, the 3rd insulating barrier, 3.12,
4th insulating barrier, the 4, second insulating barrier, 5, upper insulating lid；
A, connection conductiving point, B, extraction electrode, B1, the first extraction electrode, B2, the second extraction electrode, B3, the 3rd extraction electricity
Pole, C, introducing electrode, C1, the first introducing electrode, C2, the second introducing electrode, D, coil, E, conductiving point.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can limit according to claim
Multitude of different ways that is fixed and that cover is implemented.
Embodiment 1:
See Fig. 1, Fig. 2 and Fig. 3, a kind of high-frequency electronic transformer, its structure specifically: include transformer body, described
Transformer body includes the lower insulating lid 1 stacked gradually from the bottom to top, is provided with connection first insulating barrier 2 of conductiving point A, coil groups
3, the second insulating barrier 4 and the upper insulating lid 5 of extraction electrode B it are provided with.
Described lower insulating lid 1 is provided with introducing electrode C, the connection conductiving point A on described first insulating barrier 2 and described introducing
Electrode C connects.The present embodiment introduces electrode C and includes that the first introducing electrode C1 and second introduces electrode C2, extraction electrode B and includes
First extraction electrode B1, the second extraction electrode B2 and the 3rd extraction electrode B3.
Described coil groups 3 includes six groups of single-pieces 3.1 (all right basis of the group number of single-piece 3.1 stacked gradually from the bottom to top
Actual demand selects, and specifically takes the natural number more than or equal to 1).What described single-piece 3.1 included stacking from the bottom to top is printed on line
Enclose the 3rd insulating barrier 3.11 of D and be provided with the 4th insulating barrier 3.12 of conductiving point E.
Refer to Fig. 2, end 1 and the primary N1 input of end 2 composition, end 3 and the output of the secondary N2 of end 5 composition, end 3 and end 4 composition
The output of secondary N3, end 3 is in this as public output conductive electrode.
The inside annexation of the present embodiment high-frequency electronic transformer is as follows:
In single-piece 3.1 described in first group: one end of described coil D is with the connection conductiving point A on described first insulating barrier 2 even
Logical, its other end connects with the conductiving point E on described 4th insulating barrier 3.12；
Second group in single-piece 3.1 described in the 6th group: one end of coil D described in the described single-piece of M group 3.1 and previous group
In described single-piece 3.1 in the connection of the conductiving point E on the 4th insulating barrier 3.12, its other end and the described described single-piece of M group 3.1 the
Conductiving point E connection on four insulating barriers 3.12, wherein: M is more than 1 and less than or equal to 6；
Conductiving point E on 4th insulating barrier 3.12 and the extraction on described second insulating barrier 4 in single-piece 3.1 described in 6th group
Electrode B connects.
In heretofore described 3rd insulating barrier 3.11: the outer radius of coil D corner is 0.3mm, and coil D inside radius is
0.1mm, coil D are 0.2mm with the distance at described 3rd insulating barrier 3.11 edge, and the spacing between adjacent two circle coil D is
0.2mm.Coil winding is mainly determined according to the number of turns of beginning and end coil, and the number of turns of coil is come really by transformer voltage ratio
Fixed；Once it is determined that the no-load voltage ratio of transformator, then the number of turns of coil, the number of plies of lamination also determine that；Certainly, the number of turns of every layer can root
Adjust according to live width and distance between centers of tracks.The calculating of the concrete number of turns of coil is: it is 1 circle that figure head and the tail overlap, and remains less than 1 circle,
Calculate by the girth around a complete circle, as 3/4 circle is 3/4 around complete 1 circumference, as 11/15 circle is around complete 1 circumference
11/15, as 3/10 circle is 3/10 around complete 1 circumference.The number of turns of primary coil N1 described in the present embodiment is 10+3/4 circle, secondary
The level N2 number of turns is 5+11/15 circle, and the secondary coil N3 number of turns is 1+13/15 circle.
Heretofore described transformer body is cube structure, and the ratio of its length, width and height is 2:2:1, this
Locating a length of 6-8mm, thickness is 3-4mm.In the present invention: the thickness of lower insulating lid 1 and upper insulating lid 5 is 37-39 μm.
Described connection conductiving point A and described conductiving point E cross section in the horizontal plane are ellipse, in manufacturing process herein
Filling silver to reach to connect bilevel purpose, details are: draw in advance on half tone and connect conductiving point A and the figure of conductiving point E,
Small gap (mesh of grenadine) is left in graphics field, and planless region is then closely knit glue-line；Then by silver slurry coating
At upper surface, after scraper moves, silver slurry being downwardly applied to pressure, silver is starched the hole small by graphics field, is flowed to printing
Substrate, forms the figure of needs on substrate.
The parameter of high-frequency electronic transformer described in the present embodiment is: specification (length × width × height) is 6mm × 6mm × 3mm；Just
Level input voltage is 12 volts, and secondary output voltage is respectively 6.4 volts and 4.8 volts, and primary and secondary voltage change ratio is 15:8:6；Output work
Rate is 10 watts, and weight is 0.7g.Its principle refers to Fig. 2.
The manufacture method of above-mentioned high-frequency electronic transformer, comprises the following steps:
Ferromagnetic oxide powder is carried out pretreatment, specifically: by ferromagnetic oxide powder (using NiCuZn ferromagnetic oxide powder) herein
Putting into baking oven that temperature is 140 DEG C-160 DEG C to toast 10-14 hour, obtaining pcrmeability is 85-115 and shrinkage factor is 15%-
The NiCuZn ferromagnetic oxide powder of 19%；
The first step: slurry configures, specifically: ferromagnetic oxide powder, resin and organic solvent are joined according to the quality of 5:1:4
Ratio mix homogeneously, obtains mixed liquor；According to the quality proportioning of 1:3, mixed liquor is carried out ball milling with ball-milling medium, and mixing is all
Slurry is i.e. obtained, wherein: described resin is acrylic resin (the concrete employing A-21 solid acrylic resin of resistance to alcohol) after even；Described have
Machine solvent is the mixture of terpineol and ethanol, and mass mixing ratio is 1:2；Described ball-milling medium is steel ball；The solid of slurry
Granularity is DN501.0 ± 0.5 μm (testing with laser particle analyzer), and viscosity is 35 ± 5s (testing with 2# flow cup)；
Second step: curtain coating silk-printing and shaping, specifically: using wet method casting film technique to carry out curtain coating, to obtain transformator thick
Product, comprise the following steps:
The lower insulating lid 1 of step a, curtain coating, and print introduces electrode C on lower insulating lid 1；
Step b, it is cast the first insulating barrier 2, and print connects conductiving point A on the first insulating barrier 2；
Step c, curtain coating coil groups 3, be cast each single-piece 3.1 the most successively, the casting processes of single-piece 3.1 specifically: first
It is cast the 3rd insulating barrier 3.11, and silk-screen goes out coil D on the 3rd insulating barrier 3.11；It is cast the 4th insulating barrier 3.12 again, and
Conductiving point E is printed on 4th insulating barrier 3.12；
Step d, it is cast the second insulating barrier 4, and on the second insulating barrier 4, prints extraction electrode B；
Insulating lid 5 in step e, curtain coating；
3rd step, second step gained transformator crude product is carried out post processing i.e. obtaining high-frequency electronic transformer, post processing is successively
Including cutting process, binder removal process, sintering process, chamfer process, viscous silver process and electroplating process, details are:
Described cutting process is to use wolfram steel cutter that sheet transformator is cut into multiple transformator, and details are: from upper track work
Sequence (molding) arrives cutting action, and large stretch of high-frequency electronic transformer needs to toast two days；At large stretch of high-frequency electronic transformer during molding
Upper silk-screen aiming coordinate, understands separately by each transformator, and cutting be exactly according to these aiming coordinates, computer control wolfram steel
Cutter, is divided into single transformer by sheet transformator.
Described binder removal process is specifically: arrange a suitable binder removal heating curve and the strict air intake controlling binder removal case and
Evacuate speed, binding agent added when shaping in above-mentioned green compact and small residue solvent are slowly got rid of.Parameter during binder removal
Setting can refer to prior art.
Described sintering process is specifically: by the idiosome through binder removal process in the sintering furnace that temperature is 880 DEG C-900 DEG C
Sinter 0.5-5 hour, in sintering process, the strict fluctuation controlling sintering furnace temperature and the uniformity of protection firing atmosphere.
Described viscous silver process is specifically: starches at transformator bad body outer application silver with viscous silver machine, makes silver extraction electricity
Pole.
Described electroplating process is specifically: by extraction electrode B with introduce and all plate nickel dam on electrode C and tin layers (is specifically adopted
Use triple electrode technique, it is therefore intended that make transformator be applicable to surface and install, improve solderability and the soldering resistance of chip), described
The thickness of nickel dam is 1.5 μm-3 μm, and the thickness of described tin layers is 3 μm-5 μm.
Above-mentioned wet method casting film technique is specifically: the slurry (ferrite material with mobility prepared by last process
Material) via one circulation equipment make its as " waterfall " the dirtiest, then allow surface paste the aluminium sheet of release paper from " waterfall
Cloth " under process, the surface of release paper just covers and has gone up one layer of slurry (Ferrite Material), the thickness of every layer of slurry (Ferrite Material)
Degree must be uniformly；The aluminium sheet covering slurry (Ferrite Material) needs to toast through one section of baking oven along conveyer belt, with
Ensure that this layer of slurry (Ferrite Material) has certain solidification when arriving next procedure；Silk-screen coil use screen printer and
Half tone, the aluminium sheet that silk-screen is crossed arrives along conveyer belt and is also required to before next operation through one section of baking oven, and effect is as before；Lead
Electricity point E connection between dielectric layers (insulating barrier comprising band conductiving point and the insulating barrier being printed on coil)；Silk-screen is led
The aluminium sheet of electricity point is subsequently returning at first operation through baking oven, then is cast one layer of slurry (Ferrite Material)；Then repeat with
Upper process is until completing the number of plies.Controlling network chain transfer rate in casting processes is 450 ± 10 (Hz), and the curtain coating edge of a knife is adjusted to thickness
It is 38 ± 1 μm.
The specifications and characteristics parameter of the present embodiment gained high-frequency electronic transformer refers to table 1.
Embodiment 2-embodiment 3
Embodiment 2-embodiment 3 difference from Example 1 refers to table 1, specifically:
Described in embodiment 2, the parameter of high-frequency electronic transformer is: primary input voltage is 12 volts, and secondary output voltage divides
Not being 6.4 volts and 3.3 volts, primary and secondary voltage change ratio is 15:8:4；
Described in embodiment 3, the parameter of high-frequency electronic transformer is: primary input voltage is 12 volts, and secondary output voltage divides
Not being 10.4 volts and 6.4 volts, primary and secondary voltage change ratio is 15:13:8.
Other are with embodiment 1.
Comparative example 1-comparative example 3
Comparative example 1-comparative example 3 all uses prior art to prepare, and its structure and process are with reference to existing skill
Art, its specifications and characteristics refers to table 1.
Table 1 embodiment 1-3 and the specifications and characteristics comparison sheet of comparative example's 1-3 products obtained therefrom
By table 1, in the case of identical output is constant, gained high-frequency electronic transformer of the present invention is with existing
Technical products compares (specifically: embodiment 1 and comparative example 1 compare, and embodiment 2 compares with comparative example 2, embodiment 3
Compare with comparative example 3) volume (dimensions) little, light weight, leakage inductance are little, Transmission efficiency is high and the one of product
Cause is good.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a high-frequency electronic transformer, it is characterised in that include that transformer body, described transformer body include from the bottom to top
The lower insulating lid (1) that stacks gradually, it is provided with and connects the first insulating barrier (2), the coil groups (3) of conductiving point (A), be provided with extraction electrode
(B) the second insulating barrier (4) and upper insulating lid (5)；
Described lower insulating lid (1) is provided with introducing electrode (C), and the connection conductiving point (A) on described first insulating barrier (2) is with described
Introduce electrode (C) connection；
Described coil groups (3) includes that N group single-piece (3.1) stacked gradually from the bottom to top, N are the natural number more than or equal to 1；Described
Single-piece (3.1) includes the 3rd insulating barrier (3.11) and the 4th insulating barrier (3.12) of stacking from the bottom to top, described 3rd insulation
Being printed on coil (D) on layer (3.11), described 4th insulating barrier (3.12) is provided with conductiving point (E)；Single-piece (3.1) described in first group
In: one end of described coil (D) connects with the connection conductiving point (A) on described first insulating barrier (2), its other end and described the
Conductiving point (E) connection on four insulating barriers (3.12)；In the described single-piece of M group (3.1): one end of described coil (D) and M-1
Conductiving point (E) connection organized in described single-piece (3.1) on the 4th insulating barrier (3.12), its other end and the described described list of M group
Conductiving point (E) on 4th insulating barrier (3.12) connection in part (3.1), wherein: the M natural number more than 1 and less than or equal to N；N
The conductiving point (E) organized in described single-piece (3.1) on the 4th insulating barrier (3.12) and the extraction electrode on described second insulating barrier (4)
(B) connection.
High-frequency electronic transformer the most according to claim 1, it is characterised in that described transformer body is cube knot
Structure, the ratio of its length, width and height is 2:2:1.
High-frequency electronic transformer the most according to claim 1, it is characterised in that described lower insulating lid (1) and described upper absolutely
The thickness of edge lid (5) is 37-39 μm.
4. according to the high-frequency electronic transformer described in claim 1-3 any one, it is characterised in that described 3rd insulating barrier
(3.11), in: the outer radius of coil (D) corner is 0.3mm, coil (D) inside radius is 0.1mm, is positioned at the coil of outmost turns
(D) distance with described 3rd insulating barrier (3.11) edge is 0.2mm, and the spacing between adjacent two circle coils (D) is 0.2mm.
High-frequency electronic transformer the most according to claim 4, it is characterised in that described connection conductiving point (A) and described lead
Electricity point (E) cross section in the horizontal plane is ellipse.
High-frequency electronic transformer the most according to claim 4, it is characterised in that the quantity of described introducing electrode (C) is two
Individual, the quantity of described extraction electrode (B) is three.
7. the manufacture method of high-frequency electronic transformer as described in claim 4-6 any one, it is characterised in that include with
Lower step:
The first step: slurry configures, specifically: ferromagnetic oxide powder, resin and organic solvent are mixed according to the quality proportioning of 5:1:4
Close uniformly, obtain mixed liquor；Mixed liquor and ball-milling medium are carried out ball milling, after mix homogeneously according to the quality proportioning of 1:3
Obtain slurry；
Second step: curtain coating silk-printing and shaping, specifically: use wet method casting film technique to carry out curtain coating and obtain transformator crude product, bag
Include following steps: the lower insulating lid (1) of step a, curtain coating, and introduce electrode (C) in the upper print of lower insulating lid (1)；Step b, curtain coating the
One insulating barrier (2), and connect conductiving point (A) in the upper print of the first insulating barrier (2)；Step c, curtain coating coil groups (3), the most successively
Be cast each single-piece (3.1), the casting processes of single-piece (3.1) specifically: first curtain coating the 3rd insulating barrier (3.11), and the 3rd insulation
The upper silk-screen of layer (3.11) goes out coil (D)；It is cast the 4th insulating barrier (3.12) again, and prints conductiving point on the 4th insulating barrier (3.12)
(E)；Step d, it is cast the second insulating barrier (4), and on the second insulating barrier (4), prints extraction electrode (B)；Insulate in step e, curtain coating
Lid (5)；
3rd step, second step gained transformator crude product is carried out post processing i.e. obtain high-frequency electronic transformer.
The manufacture method of high-frequency electronic transformer the most according to claim 7, it is characterised in that described resin is acrylic acid
Resin；Described organic solvent be the quality proportioning of the mixture of terpineol and ethanol, terpineol and ethanol be 1:2；Described ball milling
Medium is steel ball.
The manufacture method of high-frequency electronic transformer the most according to claim 7, it is characterised in that after in described 3rd step
Processing and include cutting process, binder removal process, sintering process, chamfer process, viscous silver process and electroplating process successively, details are:
Described cutting process is specifically: use wolfram steel cutter that sheet transformator is cut into multiple transformator；
Described sintering process is specifically: sintered in the sintering furnace that temperature is 880 DEG C-900 DEG C by the idiosome through binder removal process
0.5-5 hour；
Described electroplating process is specifically: will extraction electrode (B) and introduce and all plate nickel dam and tin layers, described nickel dam on electrode (C)
Thickness be 1.5 μm-3 μm, the thickness of described tin layers is 3 μm-5 μm.
10. according to the manufacture method of the high-frequency electronic transformer described in claim 7-9 any one, it is characterised in that described
Ferromagnetic oxide powder also needed to carry out pretreatment before carrying out slurry configuration, described pretreatment specifically: ferromagnetic oxide powder is put into
Temperature is baking 10-14 hour in the baking oven of 140 DEG C-160 DEG C；Pcrmeability through pretreated ferromagnetic oxide powder is 85-
115, its shrinkage factor is 15%-19%.
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| US20140225699A1 (en) * | 2013-02-14 | 2014-08-14 | Murata Manufacturing Co., Ltd. | Transformer |
| CN206116170U (en) * | 2016-11-03 | 2017-04-19 | 深圳市固电电子有限公司 | High frequency electronic transformer |
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| CN1858864A (en) * | 2003-02-26 | 2006-11-08 | Tdk株式会社 | Thin-film type common-mode choke coil and method of manufacture thereof |
| CN101568979A (en) * | 2007-02-27 | 2009-10-28 | 株式会社村田制作所 | Laminated type transformer parts |
| CN101441921A (en) * | 2008-08-28 | 2009-05-27 | 深圳振华富电子有限公司 | Inducer and method of manufacturing the same |
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Application publication date: 20161221 |