CN202102840U

CN202102840U - Transformer

Info

Publication number: CN202102840U
Application number: CN201120184390.4U
Authority: CN
Inventors: 叶书玮
Original assignee: Acbel Polytech Inc
Current assignee: Acbel Polytech Inc
Priority date: 2011-05-25
Filing date: 2011-06-02
Publication date: 2012-01-04
Anticipated expiration: 2021-06-02
Also published as: TWM417638U

Abstract

The utility model provides a transformer, which is provided with two butted iron cores, wherein each iron core is provided with a middle column and a plurality of side walls which are annularly arranged around the middle column at intervals; the middle columns of the two iron cores are correspondingly connected with each other; a primary side winding, a secondary side winding and at least one magnetic conduction sheet for separating the two windings are sleeved on the middle columns; and the coil outlet end of the primary side winding or the secondary side winding is pulled out at different angular positions. Thus, the aim of adjusting the leakage inductance value of the transformer can be fulfilled by designing non-integral turns of wound coils of the primary side winding or the secondary side winding, selecting the material and the number of the magnetic conduction sheet or adjusting the size of a gap between end parts of at least one group of corresponding side walls on the two iron cores without changing the appearance, the volume and the size of the transformer.

Description

Transformer

Technical field

The utility model is a transformer of adjusting the leakage inductance value about a kind of.

Background technology

Transformer is that a kind of magnetic core and primary side winding and primary side winding of utilizing produces the electromagnetic coupled induction, reaches the electronic building brick of the purpose of changing voltage whereby.Under desirable state, the primary side winding and the primary side winding of transformer are coupled fully, and its coupling coefficient is 1, and the leakage inductance value is zero.But; Under the situation of reality, can there be leakage inductance at this coupling coefficient in general transformer under less than 1 situation because its primary side winding and primary side winding fail to be coupled fully mostly; And because this leakage inductance can have influence on the power of transformer conversion efficiency; Therefore traditional design of transformer there's no one who doesn't or isn't is devoted to promote the coupling efficiency between transformer primary winding and primary side winding, reducing leakage inductance, and then the loss of energy in the minimizing voltage transitions process.

Yet; (Leakage Inductance L), for example makes this transformer and a capacity cell (Capacitor in the power system of electronic product of new generation, then to select actively to utilize in the transformer inevitably leakage inductance; C) connect; Utilize the leakage inductance on the transformer to constitute a LC resonant circuit, this LC resonant circuit is applied in the soft switch designs, reduce switching loss, the reduction noise of switch element and promote usefulness with this capacity cell.

The existing transformer that can adjust electrical leakage is shown in several I279817 number " transformer device structure " patent of invention cases of TaiWan, China certificate number; Referring to Fig. 6 and Fig. 7, comprise one first coil holder 61, one second coil holder 62 and an iron core group 63: this first coil holder 61 is in order to twine a primary side winding 64 and to comprise a first passage 611; This second coil holder 62 is in order to twine a primary side winding 65 and to comprise a second channel 621 and a socket part 622; The socket part 622 of this second coil holder 62 has an accommodation space 623 that is connected with this second channel 621; In order to hold the primary side winding 64 that is wound in this first coil holder 61; So that this primary side winding 64 is isolated with primary side winding 65, and make the first passage 611 of this first coil holder 61 be connected with the second channel 621 of this second coil holder 62; This iron core group 63 is arranged in the second channel 621 of first passage 611 and this second coil holder 62 of this first coil holder 61.Make primary side winding 64 and primary side winding 65 isolated through socket part 623; And increase the distance between primary side winding 64 and the primary side winding 65, thereby reach the coupling efficiency of 65 of this primary side winding 64 of reduction and primary side windings and the purpose that increases the leakage inductance value of this transformer.

Yet the shortcoming of the transformer of above-mentioned prior art is, can carry out follow-up assembling operation because its primary side winding 64 all must be set around earlier on the

coil holder

61,62 with primary side winding 65, has therefore increased the material and the cost of manufacture of

coil holder

61,62 parts;

In addition; With regard to structure and principle; Though the aforementioned patent case can be adjusted the relative distance of this primary side winding 64 and 65 of primary side windings through moving this first coil holder 61 and the mode of the relative position of second coil holder 62, thereby reaches the purpose of the leakage inductance value of this transformer of adjustment, under the situation of needs than leakage inductance greatly; The distance that certainly will need 65 of this primary side winding 64 of increasing and primary side windings; Thus, the monnolithic case of this transformer also can can't be kept the profile of miniaturization along with increasing.

Because aforementioned existing in prior technology problem, the utility model provides a kind of transformer, and the transformer device structure cost that uncommon design whereby solves prior art is high, and the profile shortcoming that can change along with adjustment leakage inductance value.

The utility model content

The purpose of the utility model is to be to provide a kind of transformer, and it can overcome the defective of prior art in adjustment leakage inductance value.

In order to achieve the above object, the utility model proposes a kind of transformer, comprising:

Two iron cores, each iron core is provided with a center pillar, this center pillar spaced around is equipped with a plurality of sidewalls, the center pillar correspondence of this two iron core is joined, and wherein an iron core sidewall also respectively with corresponding joining of sidewall of another iron core;

One primary side winding, it is set around on the center pillar of an iron core wherein; And

One primary side winding; It is set around on the center pillar of another iron core; This primary side winding has one first end and one second end; First end of this primary side winding and second end are pulled out by the different angles position of the outer peripheral edges of this primary side winding respectively, make the winding turns of this primary side winding be the kenel of non-integer circle.

Above-mentioned primary side winding has one first end and one second end, and first end of this primary side winding and second end also can be respectively pulled out by the different angles position of the outer peripheral edges of this primary side winding, makes the winding turns of this primary side winding be the kenel of non-integer circle.

Can be formed with the gap between the end of at least one group of corresponding sidewall on above-mentioned two iron cores.

Above-mentioned transformer can further comprise at least one magnetic conduction sheet, and this magnetic conduction sheet is sheathed on the center pillar of this iron core, and between this primary side winding and primary side winding.

Above-mentioned iron core can have the two side, and this two side lays respectively at the two opposite sides of this center pillar.

But spacer ring is provided with four sidewalls around the center pillar of above-mentioned iron core.

Above-mentioned primary side winding can form in the single cord winding, and this primary side winding can press the rolling coiling to form by flat copper sheet in advance, and said primary side winding and primary side winding directly are sheathed on the center pillar of corresponding iron core.

Above-mentioned primary side winding can be set around on the coil holder, and said primary side winding is sheathed on the center pillar of this iron core together with this coil holder.

The major advantage of the utility model is; Can be under the state of the overall volume size that does not change this transformer; Reach the purpose of its leakage inductance value of adjustment in many ways: at first, be the design of non-integer circle, can reduce the coiling coupling efficiency of this primary side winding and primary side winding through the winding turns of its primary side winding or primary side winding; And then improve the purpose of the leakage inductance value of this transformer; In addition, cooperate relative angle position between the end of adjusting this primary side winding or primary side winding, can further adjust the value of the leakage inductance that is produced; In addition, through selecting the magnetic conduction sheet of Fe or low permeability for use, perhaps, also can adjust the coiling coupling efficiency between this primary side winding and the primary side winding, to adjust the leakage inductance value of this transformer with the mode of the quantity that increases and decreases this magnetic conduction sheet; Moreover, through the mode of gap length between the end of adjusting at least one group of corresponding sidewall on this two iron core, can reach the purpose of the leakage inductance value of this transformer of adjustment equally.

The minor advantage of the utility model is that this transformer is sheathed on separately on the center pillar of this iron core after when assembling, can selecting first winding to go out this primary side winding and primary side winding again, to save the required cost that expends of two coil holders will be set in each transformer.

Description of drawings

Fig. 1 is the stereo appearance figure of the utility model.

Fig. 2 is the three-dimensional exploded view of the utility model.

Fig. 3 is the vertical view of the utility model.

Fig. 4 is the vertical view of another embodiment of the utility model.

Fig. 5 is the utility model end view of an embodiment again.

Fig. 6 is the three-dimensional exploded view of prior art.

Fig. 7 is the side-looking subelement profile of prior art.

The main element label declaration:

10,10A, 10B, 10B ' iron core

11,

11A center pillar

12,12A, 12B, 12B ' sidewall

13 annular grooves 14,14A outlet portion

15B gap 20 primary side windings

21 first ends, 22 second ends

30 primary side windings, 31 first ends

32 second ends, 40 magnetic conduction sheets

50 coil holders, 61 first coil holders

611 first passages, 62 second coil holders

621 second channels, 622 socket parts

623 accommodation spaces, 63 iron core group

64 primary side winding, 65 primary side windings

Embodiment

Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the embodiment of description of drawings the utility model at present:

Referring to Fig. 1 and shown in Figure 2, the transformer of the utility model comprises two iron cores 10, a primary side winding 20, a primary side winding 30 and at least one magnetic conduction sheet 40, wherein:

This two iron core 10 docks each other, and each iron core 10 is provided with a center pillar 11, and these center pillar 11 spaced around are equipped with a plurality of sidewalls 12; Be formed with an annular groove 13 between this center pillar 11 and the sidewall 12; In addition, be formed with an outlet portion 14 between the per two adjacent sidewalls 12, preferably; This iron core 10 becomes groove-like in the side concave shaped at corresponding each outlet portion 14 place; During assembling, center pillar 11 correspondences of this two iron core 10 are joined, and wherein an iron core 10 sidewall 12 respectively with 12 corresponding joining of sidewall of another iron core 10;

Primary side winding 20 is set around on the center pillar 11 of an iron core 10 wherein; And be arranged in the annular groove 13 of this iron core 10; This primary side winding 20 has one first end 21 and one second end 22; Cooperation is referring to shown in Figure 3, and first end 21 of this primary side winding 20 and second end 22 can be pulled out by the outlet portion 14 that is positioned at the different angles position on this iron core 10 respectively, makes the winding turns of this primary side winding 20 be the kenel of non-integer circle;

Primary side winding 30 is set around on the center pillar 11 of another iron core 10; And be arranged in the annular groove 13 of this iron core 10; This primary side winding 30 has one first end 31 and one second end 32, and first end 31 of this primary side winding 30 and second end 32 also can be pulled out by the outlet portion 14 that is positioned at the different angles position on this iron core 10 respectively, makes the winding turns of this primary side winding 30 be the kenel of non-integer circle; Wherein, When to this primary side winding 20 inputs one electric current, can in the center pillar 11 of this two iron core 10 and sidewall 12, form magnetic loop, and in this primary side winding 30, produce an output current because of electromagnetic induction;

In the specific embodiment of the utility model, this primary side winding 20 is to form with the single cord winding, and this primary side winding 30 is after pressing the rolling coiling to form in advance with flat copper sheet; Directly be sheathed on the center pillar 11 of corresponding iron core 10, in addition, this primary side winding 30 can also carry out winding by multi cord again; Make this primary side winding 30 can transmit the bigger magnitude of current, wherein, should with the primary side winding of single cord winding 20 with the primary side winding of multi cord winding except being set around earlier on the coil holder 50; Outside being sheathed on the center pillar 11 of this iron core 10 together with this coil holder 50 again; Also can carry out winding at coil holder 50 in advance, and with the gluing mode fixedly after the external form, again by taking off on this coil holder 50; Be set in separately on the center pillar 11 of this iron core 10, the required cost that expends of two coil holders will be set in each transformer to save;

Magnetic conduction sheet 40 is sheathed on the center pillar 11 of this iron core 10, and between this primary side winding 20 and primary side winding 30.

Be the design of non-integer circle through the above-mentioned winding turns that makes this primary side winding 20 or primary side winding 30; Can reduce the coiling coupling efficiency of this primary side winding 20 and primary side winding 30; Thereby reach the purpose of the leakage inductance value that improves this transformer; Wherein, cooperate

first end

21,31 and 22,32 relative angle positions of second end of this primary side winding 20 of adjustment and primary side winding 30, also can further adjust the value of the leakage inductance that is produced;

Referring to shown in Figure 3; In the specific embodiment of the utility model; This iron core 10 has two side 12, and this two side 12 lays respectively at the two opposite sides of this center pillar 11, correspondingly; This iron core 10 then is formed with two outlet portions 14 in two opposite sides in addition, and this primary side winding 20 can extend this transformer by the position of approximately relative 180 degree respectively with

first end

21,31 and

second end

22,32 of primary side winding 30;

Further referring to another specific embodiment of the utility model shown in Figure 4; Wherein the spaced around of the center pillar 11A of this iron core 10A is equipped with four sidewall 12A; Be formed with the 14A of outlet portion of groove-like between the two adjacent wall 12A; Be just can spend or this transformer is extended in 270 position, make the adjusting range of leakage inductance value of this transformer more meticulous by approximately relative 90 degree, 180 with first end 21 of, this primary side winding 20 and primary side winding and second end 22.

In addition; Through the magnetic conduction sheet 40 of selecting Fe or low permeability for use; Perhaps, also can be used to adjust the coiling coupling efficiency between this primary side winding 20 and the primary side winding 30, thereby reach the purpose of the leakage inductance value of this transformer of adjustment with the mode of the quantity that increases and decreases this magnetic conduction sheet 40.

Moreover; Specific embodiment again referring to the utility model shown in Figure 5; Wherein through 15B big or small mode in gap between the end of this two iron core of adjustment 10B, the last at least one group of corresponding sidewall 12B of 10B ', 12B '; For example make the wherein sidewall 12B ' of this iron core 10B ' be shorter than other sidewalls 12B, then after this iron core 10B ' and another iron core 10B are assembled relatively, just can form required gap 15B in the place, end of short sidewall 12B ' at this; And, can reach the purpose of the leakage inductance value of this transformer of adjustment equally through adjusting the size of this gap 15B.

The above is merely the schematic embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.

Claims

1. a transformer is characterized in that, said transformer comprises two iron cores, a primary side winding and a primary side winding, wherein:

Each said iron core is provided with a center pillar, and said center pillar spaced around is equipped with a plurality of sidewalls, and the center pillar correspondence of two said iron cores is joined, and wherein a said iron core sidewall also respectively with corresponding joining of sidewall of another said iron core;

Said primary side winding is set around on the center pillar of a said iron core wherein;

Said primary side winding is set around on the center pillar of another said iron core, and said primary side winding has one first end and one second end, and first end of said primary side winding and second end are pulled out by the different angles position of the outer peripheral edges of said primary side winding respectively.

2. transformer as claimed in claim 1 is characterized in that, said primary side winding has one first end and one second end, and first end of said primary side winding and second end are pulled out by the different angles position of the outer peripheral edges of said primary side winding respectively.

3. transformer as claimed in claim 1 is characterized in that, is formed with the gap between the end of at least one group of corresponding said sidewall on the two said iron cores.

4. transformer as claimed in claim 2 is characterized in that, is formed with the gap between the end of at least one group of corresponding said sidewall on the two said iron cores.

5. like claim 1 to 4 each described transformer, it is characterized in that said transformer further comprises at least one magnetic conduction sheet, said magnetic conduction sheet is sheathed on the center pillar of said iron core, and between said primary side winding and primary side winding.

6. transformer as claimed in claim 5 is characterized in that said iron core has the two side, and two said sidewalls lay respectively at the two opposite sides of said center pillar.

7. transformer as claimed in claim 5 is characterized in that the spaced around of the center pillar of said iron core is equipped with four sidewalls.

8. transformer as claimed in claim 6; It is characterized in that; Said primary side winding forms with the single cord winding, and said primary side winding presses the rolling coiling to form with flat copper sheet in advance, and said primary side winding and primary side winding directly are sheathed on the center pillar of corresponding said iron core.

9. transformer as claimed in claim 7; It is characterized in that; Said primary side winding forms with the single cord winding, and said primary side winding presses the rolling coiling to form with flat copper sheet in advance, and said primary side winding and primary side winding directly are sheathed on the center pillar of corresponding said iron core.

10. transformer as claimed in claim 8 is characterized in that, said primary side winding is set around on the coil holder, and said primary side winding is sheathed on the center pillar of said iron core together with said coil holder.