CN101097806B - High-voltage transformer - Google Patents
High-voltage transformer Download PDFInfo
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- CN101097806B CN101097806B CN200710110245XA CN200710110245A CN101097806B CN 101097806 B CN101097806 B CN 101097806B CN 200710110245X A CN200710110245X A CN 200710110245XA CN 200710110245 A CN200710110245 A CN 200710110245A CN 101097806 B CN101097806 B CN 101097806B
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- magnetic core
- siding ring
- tension transformer
- magnetic
- insulativity
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Abstract
A high pressure transformer (11) comprises: first frame (21A) and second frame (21B), which wrap with secondary side-loops (46A, 46B) and include inner space; first magnetic core (30A) and second magnetic core (30B), which insert into the inner space of the two frames (21A, 21B) and form I-shape; third magnetic core (31), which wraps primary side-loop (45) and forms H-shape. The third magnetic core (31) uses magnetic core of Ni-Zn with high insulating performance material. The first magnetic core (30A) and the third magnetic core (31) form first magnetic circuit, the second magnetic core (30B) and the third magnetic core (31) form second magnetic circuit.
Description
Technical field
The present invention relates to particularly relate to the high-tension transformer that two transformer portions is installed as the dual transformer type of one as employed inverter transformer high-tension transformers such as (inverter transformer) in the usefulness lighting circuit of discharge lamp backlight in display panels.
Background technology
In LCD TV, as the light source of using backlight, generally drive a plurality of discharge lamps, but be to use a plurality of step-up transformers to carry out above-mentioned driving, need to consider liquid crystal panel is guaranteed the mutual brightness homogeneous of a plurality of discharge lamps, there is not the problem of speck on the picture.
But in recent years, the maximization of LCD TV is very fast, and is compared with the past as the light source of using backlight, needs to drive more discharge lamp.Since step-up transformer the space is set and manufacturing cost is excessive, therefore preferably light two straight tube discharge lamps or U word discharge lamp simultaneously by a step-up transformer, the application's applicant opens the spy of Japan and discloses the step-up transformer that can light a plurality of discharge lamps simultaneously in the 2005-311227 communique.
Drive the step-up transformer of being put down in writing in the 2005-311227 communique the spy of this Japan, combine by two I type magnetic cores and a H type magnetic core, 1 time, 2 times coil all is wrapped in each I type magnetic core, by with H type magnetic core and its combination, constitutes two symmetrical formations of closed magnetic circuit.
In addition, drive the step-up transformer of putting down in writing in the 2005-39050 communique, dispose the winding support of 2 coils respectively with the both sides of support (bobbin), guarantee output a plurality of discharge lamps by a step-up transformer in the winding of primary winding the spy of Japan.
But the step-up transformer of above-mentioned patent documentation 1 record only twine primary winding and secondary coil respectively at each I type magnetic core, so H type magnetic core only plays the function that magnetic circuit is constituted closed magnetic circuit.And, by in each I type magnetic core, twining primary winding and secondary coil in abutting connection with ground, easily increase, in addition because the misgivings of toot sound take place the elongated existence of the length of magnetic path in this axial size at the winding direction of principal axis.
In addition, the step-up transformer of above-mentioned patent documentation 2 records, in order to prevent that the high voltage that secondary coil takes place from bringing influence to primary winding, between primary winding and secondary coil, need the certain distance of guaranteeing that dielectric voltage withstand is used, can not avoid enlarging the situation of width, be difficult to seek the miniaturization of transformer in the direction (Width) vertical with twining direction of principal axis.
Summary of the invention
The present invention makes in view of the above fact, its purpose is to provide a kind of can drive a plurality of loads simultaneously by a high-tension transformer, can not increase significantly in the horizontal amplitude size vertical, twine the high-tension transformer that axial vertical amplitude size can reduce significantly with twining axle.
High-tension transformer of the present invention, the secondary side that is provided for twining second siding ring in the Width both sides that the primary side that is wound with first siding ring twines axle respectively side by side twines axle,
Described primary side twines axle, constitute by the magnetic core that constitutes by the high-insulativity magnetic material that has directly twined described first siding ring, in described magnetic core and opposed zone, high-pressure side second siding ring, mode with the winding that stops described first siding ring is provided with insulating element, described second siding ring, be wrapped in described secondary side across support and twine axle, described secondary side twines axle, on described secondary side winding direction of principal axis, be divided into a plurality of subregions, the plate of cutting apart of insulating properties is set between each described subregion.
In addition, at least one side's of magnetic core of preferred described high-insulativity magnetic material formation end is provided with the lead-out groove of described first siding ring.
In addition, described first siding ring, with the opposed zone, high-pressure side of described second siding ring, the mode with the winding that stops described first siding ring is provided with insulating element.
Specifically, for example described primary side twine axle, with the opposed zone, high-pressure side that described secondary side twines axle, the insulating properties of twining the winding that is used to stop described first siding ring is along wearing.
In addition, so-called here " high-insulativity magnetic material " is to form the material that is commonly referred to as high-insulativity in the magnetic material of magnetic core, and insulating properties is the high magnetic material of magnetic core than the Mn-Zn that is not called high-insulativity.Specifically, for example Ni such as Ni-Zn is that magnetic core meets the high-insulativity material.
In addition, in the application's the invention, be magnetic core etc. even be not called the Mn-Zn of high-insulativity, the surface applied insulating material raising insulating properties at this magnetic core also belongs to " high-insulativity magnetic material ".
Description of drawings
Fig. 1 represents the stereogram of the high-tension transformer that embodiments of the present invention are relevant.
Fig. 2 is the skeleton diagram that is used to illustrate that the closed magnetic circuit of the high-tension transformer that embodiments of the present invention are relevant constitutes.
Fig. 3 is the skeleton diagram that is used to illustrate the formation of the high-tension transformer that the mode of texturing of embodiments of the present invention is relevant.
Fig. 4 is the vertical view that expression is amplified the part of the relevant high-tension transformer of embodiments of the present invention.
Fig. 5 is the vertical view of a part of alter mode of execution mode shown in Figure 4.
Fig. 6 is the part stereogram that is used to illustrate the part-structure of the high-tension transformer that embodiments of the present invention are relevant.
Explanatory note among the figure:
The 11-high-tension transformer, 17A, the 17B-terminal pins, 18A, 18B-circle terminal (か ら げ terminal), 21A, 21B, 121A, the 121B-support, 27A, 27B-coiling terminal base, 30A-the-magnetic core, 30B-second magnetic core, 31,231-the 3rd magnetic core, 31A, the 31B-end, 32A, 32B, 132A, the 132B-magnetic circuit, 35,135-is along wearing 40A, the 40B-flange plate, 42A, 42B-is cut apart plate, 45, the 245-first siding ring, 46A, the 46B-second siding ring, the 51-slot part that connects up, 130-I word shape magnetic core, 131-E word shape magnetic core, the 235-flange, a, b, c, the d-flow direction.
Embodiment
Below, the limit is with reference to accompanying drawing, and the limit describes the relevant high-tension transformer (inverter transformer) of embodiments of the present invention in detail.
Fig. 1 is the stereogram of the relevant high-tension transformer of expression embodiments of the present invention, and Fig. 2 is the part vertical view that its magnetic circuit of expression constitutes.
The high-tension transformer 11 of present embodiment is also referred to as two leakage transformers (double leakagetransformer), is used to make two CCFL (cold-cathode discharge lamp) inverter transformer that discharge simultaneously, light, that use in the DC/AC translation circuit.
This high-tension transformer 11 possesses: the first support 21A with hollow bulb and the second support 21B that twine second siding ring 46A, 46B respectively; Be inserted in the hollow bulb of these two support 21A, 21B, the first magnetic core 30A, the second magnetic core 30B of formation I word shape; Directly twine the 3rd magnetic core 31 of first siding ring 45, formation H font.
Here, the second siding ring 46A, the 46B that directly are wrapped in the first siding ring 45 on the 3rd magnetic core 31 and twine on each support 21A, 21B are by by the 3rd magnetic core 31 that forms H word shape with form the formed closed magnetic circuit structure of magnetic core 30A, 30B (with reference to Fig. 2) electromagnetic coupled of I word shape.
In addition, above-mentioned second siding ring 46A, 46B, axle along the magnetic core 30A, the 30B that form I word shape is wrapped on support 21A, the 21B, but in order to prevent to cause insulation breakdown owing to producing high voltage differential between adjacent coil, be divided into a plurality of subregions at its direction of principal axis, what insulating properties was set between each subregion cuts apart plate 42A, 42B, guarantees to stop the needed insulation distance of creeping discharge.
Promptly, in each subregion, for example, with about 330V (secondary side voltage 2000V, number of partitions is 6 o'clock) voltage difference take in, even in this subregion the winding initiating terminal of second siding ring 46A, 46B with twine terminal and in the process of winding around, damage etc. and contact, also can fully guarantee withstand voltage by the dielectric film of wire rod.
In addition, support 21A, 21B cross section be rectangle and form tubular, and its periphery is wound with second siding ring 46A, 46B, is provided with flange plate 40A, 40B in the both ends of the surface of support 21A, 21B.
In addition, the formation material of support 21A, 21B uses moldable resin, can prevent the ridge seam thus, in the transformer that uses thin wire rod, can reduce the problem of broken string significantly.
In addition, by with above-mentioned formation material as curable resin, can prevent by being used for support being melted the scolding tin that coil engages with circle terminal 18A, 18B.
In addition, at the magnetic core 30A, the 30B that form I word shape with form and form small gap between the magnetic core 31 of H word shape, this gap value is according to determining that in the mode that leakage flux takes place to a certain degree this gap value also can be roughly zero.
In addition, these three magnetic core 30A, 30B, 31 are arranged on winding terminal base 27A, the 27B that is made of the insulating properties material.
In addition, the initiating terminal of the initiating terminal of first siding ring 45 and terminal and second siding ring 46A, 46B and terminal and fixedly remain on coiling and are connected with terminal pins 17A, the 17B etc. of terminal base 27A, 27B, in addition, for temporary transient connecting coil, form circle terminal 18A, 18B etc.In addition, the connected mode to the terminal pins of first siding ring 45 and second siding ring 46A, 46B is not limited thereto.
In the transformer of present embodiment, as mentioned above, between two the first and second magnetic core 30A, 30B that form I word shape, one of clamping forms the 3rd magnetic core 31 of H word shape and constitutes, as shown in Figure 2, form the first magnetic circuit 32A by the first magnetic core 30A and the 3rd magnetic core 31, in addition, form the second magnetic circuit 32B by the second magnetic core 30B and the 3rd magnetic core 31.Like this first and second magnetic circuit 32A, 32B though form small magnetic gap between first, second magnetic core 30A, 30B and the 3rd magnetic core 31, form the closed magnetic circuit shape as mentioned above as a whole.
And the magnetic flux that is produced in described the 3rd magnetic core 31 by being divided into two the first and second magnetic core 30A, 30B, forms the first magnetic circuit 32A and the second magnetic circuit 32B.
Thus, according to output, can make two CCFL discharges simultaneously, light from each second siding ring 46A, 46B.
But, in the present embodiment, on the first and second magnetic core 30A, 30B,, only twine second siding ring 46A, 46B across support 21A, 21B.Therefore, the axial length of winding of the first and second magnetic core 30A, 30B shortens with above-mentioned comparing significantly of patent documentation 1.Can reduce transformer integral body thus significantly and twine axial length.
On the other hand, first siding ring 45, according to directly not being wrapped in the 3rd magnetic core 31 and constituting across support, thus, the coil diameter of first siding ring 45 can be reduced the backing thickness size significantly, under the situation of guaranteeing the distance that necessary dielectric voltage withstand is used between first siding ring 45 and second siding ring 46A, the 46B, can prevent that also the transverse width of transformer from enlarging significantly.Reality in the present embodiment, guarantee enough space lengths between the most peripheral part of first siding ring 45 and the most peripheral part of each second siding ring 46A, 46B, just can guarantee to stop the insulation distance of discharge, so can obtain being difficult to take place the withstand voltage big high-tension transformer of insulation breakdown.
In addition, by making such structure, because can reduce counting of support, so play such secondary effect that to reduce cost.
In the present embodiment, coil directly can be twined magnetic core, be the cause that is made of the high-insulativity material owing to the 3rd magnetic core 31, in addition, the coil that twines is made like that according to the first siding ring 45 than low voltage, needn't be worried generation problem in insulation.
That is, in the present embodiment,, use high-insulativity material Ni-Zn magnetic core as the formation material of the first and second magnetic core 30A, 30B and the 3rd magnetic core 31.
In addition, also the formation material of the first and second magnetic core 30A, 30B can not being constituted by be not called the high-insulativity material magnetic core as Mn-Zn is magnetic core, on the other hand, is that the magnetic core of such high-insulativity material constitutes with the 3rd magnetic core 31 by Ni-Zn.
As the formation material of the 3rd magnetic core 31, when using Mn-Zn to be magnetic core, be difficult to directly twine first siding ring 45, but because the Ni-Zn magnetic core is that the insulation impedance of magnetic core is much bigger than Mn-Zn, so needn't in the middle of be separated with support and guarantee insulation.
In addition, in inverter transformer, compare second siding ring 46A, 46B, need make the magnitude of current of first siding ring 45 big, make the linear diameter of first siding ring 45 bigger than the linear diameter of second siding ring 46A, 46B, even wire rod directly is wrapped in magnetic core, the misgivings of broken string are also very little.
In addition, in the present embodiment, the magnetic core that uses H word shape we can say that magnetic core itself is formed in the both ends of twining axial region the structure of flange is set, so be easy to the winding operation of first siding ring 45 as the 3rd magnetic core 31.
In addition, the 3rd magnetic core 31 of present embodiment, as shown in Figure 4, and the end regions of (downside among the figure) in its high-pressure side (corresponding) with two subregions in high-pressure side of second siding ring 46A, 46B, winding is pasted with along wearing (insulating tape) 35.This edge is worn 35 and is stoped the winding in this zone of 45 pairs the 3rd magnetic cores 31 of first siding ring, and has the function that improves insulating properties, thus, space length between the part of the most peripheral of the most peripheral of first siding ring 45 part and each second siding ring 46A, 46B further can be shortened, promote the miniaturization of transformer in Width (with twining the vertical direction of direction of principal axis).
Like this, first siding ring 45 is not twined in zone at three magnetic core 31 corresponding with on high-tension side two subregions of second siding ring 46A, 46B, for example, when the output voltage of second siding ring 46A, 46B was made as 2000V, the most peripheral of first siding ring 45 part was set according to the mode of guaranteeing 1300～1400V dielectric voltage withstand with the space length of the most peripheral part of each second siding ring 46A, 46B and is got final product.
In addition, replace along wearing 35, also can be as shown in Figure 5, end, high-pressure side (downside among the figure) predetermined distance apart from the 3rd magnetic core 231 embeds the flange 235 with insulating properties near central position (from the position of two partition size of the close central authorities in the high-pressure side of second siding ring 46A, 46B), can stop the winding of first siding ring 45, and improve insulating properties to the zone, high-pressure side of the 3rd magnetic core 31.
In addition, as shown in Figure 6, in the present embodiment, among the both ends of the 3rd magnetic core 31 (flange part) 31A, the 31B, at least one square end portion is formed with the wiring slot part 51 that is used to extract out first siding ring 45.As long as this wiring slot part 51 guarantees that the size of linear diameter amount of first siding ring 45 is just enough.Thus, seek to utilize efficiently the space of the short transverse (thickness direction) of transformer.
In addition,, be not limited to above-mentioned execution mode, the change of other variety of ways also can be arranged as high-tension transformer of the present invention.
For example, the above-mentioned first and second magnetic core 30A, 30B form I word shape, the 3rd magnetic core 31 forms H word shape, but be not limited to this shape, the Width both sides of twining axle at primary side dispose secondary side winding axle side by side, thus as shown in Figure 2, as long as can constitute the magnetic core configuration of two closed magnetic circuits.Specifically, for example, shown in the concept map of Fig. 3, also can make up an E word shape magnetic core 131 and I word shape magnetic core 130 and form roughly day word shape.At this moment, in three arms of E word shape magnetic core 131 parallel to each other, two arms that are positioned at two ends twine second siding ring across each support 121A, 121B, be positioned at the arm (also can be provided with above-mentioned same edge and wear 135 etc.) of central authorities, directly twine first siding ring, constitute two closed magnetic circuit 132A, 132B.
And, also can replace the combination of an above-mentioned E word shape magnetic core and an I word shape magnetic core, use two E word shape magnetic cores to be combined to form the roughly structure of day word shape.
In addition, above-mentioned the 3rd magnetic core 31 and the first and second magnetic core 30A, 30B, constitute by high magnetic material Ni-Zn magnetic core, but in high-tension transformer of the present invention, can be that the outer surface of magnetic material magnetic core etc., non-high magnetic material is coated with coating insulation material and constitutes also at other high magnetic materials or Mn-Zn.
In addition, the cross section of each magnetic core (cross section) shape also is not limited to given shapes such as rectangle, and shape arbitrarily such as circle, ellipse also can be made in its cross section.
And then, high-tension transformer of the present invention, inverter transformer does not still go for other range transformers yet.
In addition, the load as driven object also is not limited to above-mentioned CCFL.
In addition, in above-mentioned, wear on the use edge or flange stops the winding of first siding ring to the zone, high-pressure side of the 3rd magnetic core 31, but as high-tension transformer of the present invention, be not limited thereto, and for example also can using, the ring of plastics replaces the edge to wear or flange.
The invention effect
According to high-tension transformer of the present invention, the both sides of twining the Width of axle at the primary side that is wound with first siding ring dispose the secondary side winding axle that has twined second siding ring side by side, so compare with the prior art of having twined first siding ring and second siding ring in turn, can shorten significantly at the winding direction of principal axis and twine axial length.
In addition, the primary side that is positioned at central authorities twines axle, do not use support, constitute by the high-insulativity magnetic material that then twines first siding ring, so can reduce the coil diameter of the first siding ring that is wrapped in this winding axle significantly, between first siding ring and second siding ring, guarantee that necessary dielectric voltage withstand uses apart from the time, can prevent that also the transverse width of transformer from enlarging significantly.Particularly, form by the high-insulativity magnetic material and to constitute the magnetic core that primary side twines axle, and the coil of having considered to be wrapped in magnetic core is as first siding ring, so even coil directly is wrapped in magnetic core, also no problem in insulation.
Claims (8)
1. high-tension transformer, the secondary side that is provided for twining second siding ring in the Width both sides that the primary side that is wound with first siding ring twines axle respectively side by side twines axle,
Described primary side twines axle, constitutes by the magnetic core that constitutes by the high-insulativity magnetic material that has directly twined described first siding ring,
In described magnetic core and opposed zone, high-pressure side second siding ring, in the mode of the winding that stops described first siding ring insulating element is set,
Described second siding ring is wrapped in described secondary side across support and twines axle,
Described secondary side twines axle, and twine on the direction of principal axis at described secondary side and be divided into a plurality of subregions,
The plate of cutting apart of insulating properties is set between each described subregion.
2. high-tension transformer according to claim 1 is characterized in that,
The magnetic core that has twined described first siding ring is a H word shape magnetic core, and on the other hand, the described secondary side that has twined described second siding ring twines axle and is the magnetic core of I word shape.
3. high-tension transformer according to claim 1 is characterized in that,
At least one side's of the magnetic core that constitutes at described high-insulativity magnetic material end is provided with the lead-out groove of described first siding ring.
4. high-tension transformer according to claim 1 is characterized in that,
Described primary side twine axle, with the opposed zone, high-pressure side that described secondary side twines axle, be wound with the described insulating element of the winding that is used to stop described first siding ring.
5. high-tension transformer according to claim 1 is characterized in that,
It is thermoplastic resin that described support forms material.
6. high-tension transformer according to claim 1 is characterized in that,
It is heat-curing resin that described support forms material.
7. high-tension transformer according to claim 1 is characterized in that,
Described high-insulativity magnetic material is to comprise the material that Ni-Zn is a magnetic core.
8. high-tension transformer according to claim 1 is characterized in that,
Described high-insulativity magnetic material is that the mode of magnetic core constitutes according to insulating material being coated in the Mn-Zn that is not called high-insulativity.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-162300 | 2006-06-12 | ||
| JP2006162300 | 2006-06-12 | ||
| JP2006162300A JP2007335453A (en) | 2006-06-12 | 2006-06-12 | High-voltage transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101097806A CN101097806A (en) | 2008-01-02 |
| CN101097806B true CN101097806B (en) | 2011-11-09 |
Family
ID=38934673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710110245XA Expired - Fee Related CN101097806B (en) | 2006-06-12 | 2007-06-08 | High-voltage transformer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2007335453A (en) |
| CN (1) | CN101097806B (en) |
| TW (1) | TW200802433A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4881450B2 (en) | 2010-02-17 | 2012-02-22 | 株式会社東芝 | Electronic equipment and vehicles |
| CN102693818B (en) * | 2011-03-22 | 2015-02-25 | 台达电子工业股份有限公司 | Combined transformer |
| JP5799587B2 (en) * | 2011-05-31 | 2015-10-28 | トヨタ自動車株式会社 | Reactor design method |
| GB2547003A (en) * | 2016-02-04 | 2017-08-09 | Delphi Automotive Systems Lux | Transformer assembly |
| CN107768095B (en) * | 2017-11-28 | 2024-01-23 | 庆邦电子元器件(泗洪)有限公司 | High-voltage-resistant transformer |
| KR102702931B1 (en) | 2019-02-07 | 2024-09-05 | 엘지이노텍 주식회사 | Transformer and dc-dc converter including the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686060Y (en) * | 2004-04-05 | 2005-03-16 | 达方电子股份有限公司 | Transformer and lamp tube drive system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0730909B2 (en) * | 1989-06-20 | 1995-04-10 | 三菱電機株式会社 | Dust filter clogging indicator for hot air heater |
| JPH09186024A (en) * | 1995-12-28 | 1997-07-15 | Hitachi Ferrite Denshi Kk | Transformer for back light |
| JP2004146662A (en) * | 2002-10-25 | 2004-05-20 | Tdk Corp | Common mode filter |
| JP4753540B2 (en) * | 2004-03-23 | 2011-08-24 | 株式会社日立メディアエレクトロニクス | Inverter transformer and discharge lamp lighting device using the same |
| JP2005277088A (en) * | 2004-03-24 | 2005-10-06 | Seiko Epson Corp | Horizontally structured transformer |
-
2006
- 2006-06-12 JP JP2006162300A patent/JP2007335453A/en active Pending
-
2007
- 2007-06-07 TW TW96120477A patent/TW200802433A/en unknown
- 2007-06-08 CN CN200710110245XA patent/CN101097806B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686060Y (en) * | 2004-04-05 | 2005-03-16 | 达方电子股份有限公司 | Transformer and lamp tube drive system |
Non-Patent Citations (1)
| Title |
|---|
| 同上. |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007335453A (en) | 2007-12-27 |
| TW200802433A (en) | 2008-01-01 |
| CN101097806A (en) | 2008-01-02 |
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