CN207517492U - A kind of transformer - Google Patents
A kind of transformer Download PDFInfo
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- CN207517492U CN207517492U CN201721370201.6U CN201721370201U CN207517492U CN 207517492 U CN207517492 U CN 207517492U CN 201721370201 U CN201721370201 U CN 201721370201U CN 207517492 U CN207517492 U CN 207517492U
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Abstract
The utility model discloses a kind of transformer, including：I-shaped skeleton, 2 E shaped magnetic cores, primary side winding and vice-side winding；The montant of I-shaped skeleton is hollow；The center pillar of 2 E shaped magnetic cores is inserted into respectively from the both sides of the montant of I-shaped skeleton；The upper lower prop and mullion of E shaped magnetic cores surround I-shaped skeleton；Primary side winding includes the second winding of the first winding of primary side and primary side；The second windings in series of the first winding of primary side and primary side；The first winding of primary side, vice-side winding and the second winding of primary side are successively around the montant outside for being located at I-shaped skeleton；Vice-side winding includes secondary main winding and secondary time winding；Wherein, secondary main winding and secondary time winding and between-line spacing winding.The utility model, so as to reduce transformer leakage inductance and improve the coefficient of coup between transformer output winding, realizes the purpose for improving Switching Power Supply output loading cross regulation rate by adjusting transformer interlayer winding.
Description
Technical field
The utility model is related to transformer application technical field, more particularly to a kind of transformer.
Background technology
For the Switching Power Supply of multiple-channel output, the coefficient of coup caused by transformer leakage inductance is deteriorated, and can cause output voltage
Change with the variation of output loading, so as to influence voltage-regulation coefficient.In general, when main output is fully loaded, auxiliary exports at light load,
Auxiliary output voltage will increase；And when main output is lightly loaded, auxiliary output full load, auxiliary output voltage will reduce.Here it is defeated
Go out to load cross regulation rate problem, it is a critically important performance indicator in Switching Power Supply multiple-channel output.
In order to improve load cross regulation rate, the general routing negative feedback control of deciding all the way using output power leads to
It crosses control switching tube turn-on time and realizes feedback regulation；Secondary road will meet load cross regulation rate requirement, general road output by
Two schemes are used after transformer winding, halfwave rectifier diode, electrolytic capacitor：The first is linear voltage stabilization type circuit, linearly
Voltage regulation type electric circuit characteristic, input need to be higher more than 1.5V than output, can reduce power supply overall efficiency, such as output current in this way, with
The product that input voltage subtracts output voltage is power consumption, if output current increases, needs to increase cooling fin to linear voltage stabilization
Device radiates, and can also bring the volume and weight of power supply increases；It is for second adjusting and voltage-reduction switch power circuit scheme, the circuit structure
Complexity, device is more, device cost is high, has also increased an interference source newly, increases radiation, conductive quantity, reduces the anti-of complete machine
Interference performance.
Based on the problem present on, this application provides the technical solutions for solving technical problem.
Invention content
The purpose of this utility model is to provide a kind of transformer, by adjusting transformer interlayer winding, so as to reduce transformation
The coefficient of coup between device leakage inductance and raising transformer output winding, realizes and improves Switching Power Supply output loading cross regulation rate.
The technical scheme that the utility model is provided is as follows：
A kind of transformer, including：I-shaped skeleton, 2 E shaped magnetic cores, primary side winding and vice-side winding；The I-shaped
The montant of type skeleton is hollow；The center pillar of 2 E shaped magnetic cores is respectively from the both sides of the montant of the I-shaped skeleton
It is inserted into；The upper lower prop and mullion of the E shaped magnetic cores surround the I-shaped skeleton；The primary side winding include primary side first around
Group and the second winding of primary side；The second windings in series of first winding of primary side and the primary side；It is first winding of primary side, described
Vice-side winding and the second winding of the primary side are successively around the montant outside for being located at the I-shaped skeleton；The vice-side winding packet
Include secondary main winding and secondary time winding；Wherein, the secondary main winding and the secondary time winding and between-line spacing winding.
Preferably, the secondary main winding is identical with the line footpath and the number of turn of the secondary time winding.
Preferably, several pins are set on the skeleton；Several described pins respectively with the primary side winding, secondary
The end of incoming cables of main winding, secondary time winding is connected with leading-out terminal.
Preferably, first winding of primary side, the second winding of the primary side, the secondary main winding, the secondary time around
Group is wrapped up with adhesive material.
Preferably, it is wrapped up outside the E shaped magnetic cores with the adhesive material.
Compared with prior art, a kind of transformer of the utility model includes at least a kind of following advantageous effect：
1st, it is defeated to reduce transformer leakage inductance and raising transformer by adjusting the coiling of transformer interlayer in the utility model
Go out the coefficient of coup between winding so that secondary winding output voltage follows main winding output voltage to change, and realizes and improves output loading
Cross regulation rate.
2nd, in the utility model, linear voltage regulation type circuit and adjusting and voltage-reduction switch power circuit are exported without increasing, with regard to energy
Improve output loading cross regulation rate, solve Switching Power Supply output isolated form it is of high cost, overall efficiency is low, volume is big, quality
The defects of weight.
Description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, to a kind of above-mentioned spy of transformer
Property, technical characteristic, advantage and its realization method are further described.
Fig. 1 is a kind of structure chart of transformer one embodiment of the utility model；
Fig. 2 is a kind of structure chart of another embodiment of transformer of the utility model；
Fig. 3 is a kind of Switching Power Supply operation principle schematic diagram of the utility model.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model
A little embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to these
Attached drawing obtains other attached drawings, and obtains other embodiments.
To make simplified form, only schematically shown in each figure with the relevant part of the utility model, they are not
Represent its practical structures as product.In addition, so that simplified form is easy to understand, there is identical structure or work(in some figures
The component of energy, only symbolically depicts one of those or has only marked one of those.Herein, "one" is not only
It represents " only this ", can also represent the situation of " more than one ".
The utility model provides a kind of one embodiment of transformer, with reference to shown in figure 1 and Fig. 2, including：I-shaped bone
1,2 E shaped magnetic core 2 of frame, primary side winding 3 and vice-side winding 4；The montant of the I-shaped skeleton 1 is hollow；2 E
The center pillar of shaped magnetic core 2 is inserted into respectively from the both sides of the montant of the I-shaped skeleton 1；Above and below the E shaped magnetic cores 2
Column and mullion surround the I-shaped skeleton 1；The primary side winding 3 includes the first winding of primary side 31 and the second winding of primary side 32；
First winding of primary side 31 and the second winding of the primary side 32 are connected；First winding of primary side 31, the vice-side winding 4 with
And second winding of primary side 32 is successively around the montant outside for being located at the I-shaped skeleton 1；The vice-side winding 4 includes secondary
Main winding 41 and secondary time winding 42；Wherein, the secondary main winding 41 and the secondary time winding 42 and between-line spacing winding.
Specifically, in the present embodiment, I-shaped skeleton include EE, EF, EFD, ER, ERL, EC, EI, EP, EPC, ETD,
The models such as LP, RM, PQ；E shaped magnetic cores include：The types such as EE, EF, EFD, ER, ERL, EC, EI, EP, EPC, ETD, LP, RM, PQ
Number, material includes manganese-zinc ferrite, nickel-zinc ferrite etc.；Primary side winding, vice-side winding use material include enameled wire, three layers
Insulated wire, double insulation line etc..The montant of I-shaped skeleton is hollow, and shape can have circular hole, square hole, irregularly-shaped hole etc., by it
Mating magnetic core determines, for the insertion and fixation of magnetic core.The center pillar of E shaped magnetic cores is inserted into I-shaped skeleton from both sides respectively
It is enclosed in behind magnetic core hole outside I-shaped skeleton.The first winding of primary side, the second winding of primary side and vice-side winding are successively around being located at work
On the outside of the magnetic core hole of font skeleton, the second windings in series of the first winding of primary side and primary side, and rotating around in I-shaped skeleton
Innermost layer and outermost layer on the outside of magnetic core hole, secondary main winding and secondary time winding are together about outside the magnetic core hole of I-shaped skeleton
The middle layer of side, during winding secondary main winding and secondary time winding side by side, apart from one another by and without intersect, without across it is smooth
Around being located at same layer.
Another embodiment is provided on the basis of above example, with reference to figure 1, the secondary main winding and the secondary
The line footpath and the number of turn of secondary winding are identical；Several pins are set on the skeleton；Several described pins respectively with the original
The end of incoming cables of side winding, secondary main winding, secondary time winding is connected with leading-out terminal；First winding of primary side, the primary side
Second winding, the secondary main winding, the secondary time winding adhesive material 5 are wrapped up；Preferably, the E fonts magnetic
It is wrapped up outside core with the adhesive material 5.
Specifically, in the present embodiment, secondary main winding is identical with the line footpath of secondary time winding can to ensure interlayer coiling
Control is also the method for reducing leakage inductance in uniform ground；Secondary main winding is identical with the number of turn of secondary time winding to be protected
It is equal to demonstrate,prove two groups of output voltages.Pin on skeleton is the binding post provided for the winding both ends of transformer, after scolding tin with
Other circuits connect, and conductive effect, preferably metal pins etc. are played when transformer works.Adhesive material be used as around
The protective layer outside separation layer or magnetic core between group, reaches isolation, insulate to obtain purpose, can be insulating tape etc..
In the utility model, vice-side winding is two groups, while it is that (n is more than n groups that the utility model, which is also applied for vice-side winding,
2) situation, likewise, n group vice-side winding line footpaths and the number of turn are identical, and side by side, successively interval, without intersect, without across
It is smooth around the middle layer being located on the outside of the magnetic core hole of I-shaped skeleton.
Fig. 3 is the operation principle schematic diagram of Switching Power Supply, and Vout1, Vout2 are the two-way isolation output of Switching Power Supply；Become
Depressor winding is made of the first winding of primary side NpA, the second winding of primary side NpB, secondary main winding Ns1 and secondary time winding Ns2, secondary
Side main winding Ns1 and secondary time winding Ns2 winding linear diameters are equal, and secondary main winding Ns1 is parallel with secondary time winding Ns2, simultaneously
Row, interval coiling make the magnetic line of force that every circle is subject to equal, that is, the voltagesecond product of often circle induced voltage generated is equal, such secondary
Main winding Ns1 and secondary time any windings of winding Ns2 will all influence the variation of another group of voltage, Vout1 warps because of voltage change
The turn-on time of feedback control loop U2, pulse width control circuit U1 control switch K1 are crossed, realizes output voltage Vout1, Vout2 electricity
Pressure is stablized.
Need what is illustrated, component model used in this application, while performance parameter is not influenced, Ke Yijin
The adjustment of row practicability.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of transformer, which is characterized in that including：I-shaped skeleton, 2 E shaped magnetic cores, primary side winding and secondary around
Group；
The montant of the I-shaped skeleton is hollow；The center pillar of 2 E shaped magnetic cores is respectively from the institute of the I-shaped skeleton
The both sides for stating montant are inserted into；The upper lower prop and mullion of the E shaped magnetic cores surround the I-shaped skeleton；The primary side winding packet
Include the second winding of the first winding of primary side and primary side；The second windings in series of first winding of primary side and the primary side；The primary side
First winding, the vice-side winding and the second winding of the primary side are successively around the montant outside for being located at the I-shaped skeleton；
The vice-side winding includes secondary main winding and secondary time winding；Wherein, the secondary main winding and the secondary time winding is simultaneously
Between-line spacing winding.
2. a kind of transformer according to claim 1, which is characterized in that including：
The secondary main winding is identical with the line footpath and the number of turn of the secondary time winding.
3. a kind of transformer according to claim 1, which is characterized in that including：
Several pins are set on the skeleton；Several described pins respectively with the primary side winding, secondary main winding, secondary
The end of incoming cables of secondary winding is connected with leading-out terminal.
4. a kind of transformer according to claim 1, which is characterized in that including：
First winding of primary side, the second winding of the primary side, the secondary main winding, the secondary time winding insulation adhesive
Material wraps up.
5. a kind of transformer according to claim 4, which is characterized in that including：
It is wrapped up outside the E shaped magnetic cores with the adhesive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370201.6U CN207517492U (en) | 2017-10-23 | 2017-10-23 | A kind of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370201.6U CN207517492U (en) | 2017-10-23 | 2017-10-23 | A kind of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207517492U true CN207517492U (en) | 2018-06-19 |
Family
ID=62534920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721370201.6U Active CN207517492U (en) | 2017-10-23 | 2017-10-23 | A kind of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207517492U (en) |
-
2017
- 2017-10-23 CN CN201721370201.6U patent/CN207517492U/en active Active
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