CN1214412C - Flyback transformer with planar spiral winding - Google Patents
Flyback transformer with planar spiral winding Download PDFInfo
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- CN1214412C CN1214412C CN 01113131 CN01113131A CN1214412C CN 1214412 C CN1214412 C CN 1214412C CN 01113131 CN01113131 CN 01113131 CN 01113131 A CN01113131 A CN 01113131A CN 1214412 C CN1214412 C CN 1214412C
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Abstract
The present invention relates to a flyback transformer with a planar spiral winding. A magnetic core is formed by covering an upper half magnetic block and a lower half magnetic block, wherein the upper half magnetic block has the shape of a disc, and a convex cylinder is arranged in the middle of the upper half magnetic block; an annular groove is formed on the edges of the convex cylinder and the magnetic block; the groove has a downward opening; the structure of the lower half magnetic block and the structure of the upper half magnetic block are symmetrical; a primary winding and a secondary winding using the convex cylinders of the upper half magnetic block and the lower half magnetic block as centers are coiled by a spiral winding into a plurality of layers; the layers are superposed mutually. The present invention overcomes the defects of large waste of magnetic core materials, long wire coiling of the primary winding and the secondary winding, poor coupling efficiency and high power consumption of the existing traditional transformer.
Description
The present invention relates to device for transformer, relate in particular to a kind of flyback transformer with planar spiral winding.
Traditional iron oxygen magnetic core kickback transformer for example shown in Figure 1 generally comprises iron oxygen magnetic core 10, primary and secondary coil 11,12, the shape of magnetic core 10 has various shape, rectangle magnetic core, E type magnetic core etc. are arranged, gapped 13 is saturated to prevent magnetic field on the magnetic core 10, and primary and secondary coil 11,12 is wound on the magnetic core 10 continuously.When the rectangle magnetic core, elementary and secondary coil 11,12 coaxial one side that are wound on rectangular magnetic core 10, elementary and secondary coil 11,12 is column type, and primary coil 11 is interior, secondary coil 12 outside, there are following four shortcomings in the kickback transformer of this traditional structure:
1. magnetic core is long, and waste of material is bigger; 2. primary and secondary coil is big, and it is long to wind the line; 3. the primary and secondary coupling efficiency is poor, also has only 85% in theory; 4. power consumption height.
Along with the appearance of high definition TV, the kickback transformer of traditional structure can not satisfy the needs of high definition TV.
U.S. Patent number 5,392,020 discloses a kind of flexible transformer device that is used to boost, though this transformer operating efficiency increases, high pressure output is comparatively stable, but because its structure does not still have substantial change, though small lot batch manufacture still can, but still can not satisfy the large batch of needs of commercially producing with market competition, and cost is still higher.
Therefore, the kickback transformer of traditional structure is necessary to do to improve further.
For this reason, the problem that exists at the kickback transformer of traditional structure, purpose of the present invention provides a kind of flyback transformer with planar spiral winding, this transformer simplifies the structure, make the coupling efficiency elementary, secondary coil of transformer higher, power consumption is lower, volume is more light, cost reduces, and has satisfied the large batch of needs of commercially producing with high definition TV.
To achieve these goals, the present invention adopts following technical scheme: this kickback transformer comprises magnetic core, primary coil, secondary coil, magnetic core is covered by first magnetic patch that is symmetrical structure and second magnetic patch and forms, first magnetic patch is a discoid and middle part convex cylindrical, convex cylindrical and magnetic patch edge form annular groove, and slot opening is downward, and second magnetic patch is a discoid and middle part convex cylindrical, convex cylindrical and magnetic patch edge form annular groove, and slot opening upwards; Primary coil and secondary coil convex cylindrical all above, second magnetic patch be the center with the spiral coil coiling for two-layer at least above and folded mutually layer by layer, head and the tail serial connection mutually between the layer of primary coil, between the layer of secondary coil also head and the tail be connected in series mutually.
Because the magnetic core of kickback transformer of the present invention is covered by first magnetic patch that is symmetrical structure and second magnetic patch and forms, first magnetic patch is a discoid and middle part convex cylindrical, convex cylindrical and magnetic patch edge form annular groove, slot opening is downward, second magnetic patch is a discoid and middle part convex cylindrical, convex cylindrical and magnetic patch edge form annular groove, and slot opening upwards; Primary coil and secondary coil convex cylindrical all above, second magnetic patch be the center with the spiral coil coiling for two-layer at least above and folded mutually layer by layer, head and the tail serial connection mutually between the layer of primary coil, between the layer of secondary coil also head and the tail be connected in series mutually.This transformer has overcome the shortcoming that the core material waste is big, the primary and secondary coil-winding is long and coupling efficiency is poor, power consumption is high that traditional transformer exists; In addition, the volume of this transformer is more light, has satisfied the large batch of needs of commercially producing with high definition TV.
Below in conjunction with drawings and Examples, the present invention is done one explains:
The kickback transformer structural representation that boosts that Fig. 1 is traditional.
Fig. 2 is first magnetic patch structural representation of transformer of the present invention.
Fig. 3 is second magnetic patch structural representation of transformer of the present invention.
Fig. 4 is a transformer device structure schematic diagram of the present invention.
Fig. 5 is the primary and secondary coil winding schematic diagram of transformer of the present invention.
Fig. 6 is a transformer sectional structure schematic diagram of the present invention.
Fig. 7 is a transformer principle schematic diagram of the present invention.
See also Fig. 2-shown in Figure 4, flyback transformer with planar spiral winding 20 of the present invention also comprises magnetic core, primary coil and secondary coil.Magnetic core is covered by first magnetic patch 21 and second magnetic patch 22 and forms, and first magnetic patch 21 (see figure 2)s are a discoid and middle part convex cylindrical 23, and convex cylindrical 23 forms annular groove 24 with the magnetic patch edge, and Open Side Down for annular groove 24.The structure of second magnetic patch 22 (see figure 3)s and the structure of first magnetic patch are symmetrical, and second magnetic patch 22 is a discoid and middle part convex cylindrical 25, and convex cylindrical 25 forms annular groove 26 with the magnetic patch edge, and annular groove 26 openings upwards.First magnetic patch 21 is complete symmetrical structure with the structure of second magnetic patch 22, the groove that is made of two annular grooves 24,26 when first magnetic patch 21 and formation after second magnetic patch 22 covers mutually.Primary coil 31 in the transformer 20 and secondary coil 32 is all above, the convex cylindrical of second magnetic patch 23,24 is some groups for the center with the spiral coil coiling, more than at least two groups, each group is one deck, and it is folded mutually layer by layer, each layer all coiling is the spirality (see figure 5), and the shape of this coiling is as discoid mosquito-repellent incense used in the daily life.Head and the tail serial connection mutually between each layer of primary coil 31, also head and the tail serial connection mutually between each layer of secondary coil 32, each layer in elementary coil 31 and secondary coil 32 be poststack mutually, and be folded mutually as several discoid mosquito-repellent incenses.
In the distribution of primary and secondary coil 31,32,
Please in conjunction with shown in Figure 6, the described secondary coil 32 stacked axial middle parts of annular groove that place, primary coil is divided into two parts for 31 layers, and be stacked and placed on respectively secondary coil 32 about, promptly, 31 layers of close last magnetic core 21 of primary coil and following magnetic core 22, secondary coil 32 is up and down between the primary coil 31.
32 layers of distribution of described secondary coil are the high-voltage line ring layer with the centre, up and down gradually for the stacked distribution of sub-high pressure coil layer.
All be stacked with heat insulating lamella between each layer between each layer in 31 layers of the described primary coils, in 31 layers of the secondary coils and between 32 layers of 31 layers of primary coils and the secondary coils.
In kickback transformer of the present invention, first magnetic patch, second magnetic patch structural design that every layer of primary and secondary coil is spiral coiling and magnetic core makes this transformer device structure and appearance simple, overcome the shortcoming that the core material waste is big, the primary and secondary coil-winding is long and coupling efficiency is poor, power consumption is high that traditional transformer exists.
For secondary coil 31, be up and down primary coil 32, therefore in the middle of the distribution of primary and secondary coil 31,32 has been adopted, voltage in the middle of transformer is is the highest, the voltage of both direction is for taking second place up and down, and primary coil 31 is near first magnetic patch 21 and second magnetic patch 22, and its voltage is minimum.Between each layer in primary coil 31, the secondary coil 32 and the setting of the heat insulating lamella between 32 layers of 31 layers of primary coils and the secondary coils played high voltage flash and reduce distributed electrical capacity and reduce the effect of Potential distribution.
Please consult at last shown in Figure 7,
In the figure, primary coil 31 has been illustrated two groups, and secondary coil 32 has been illustrated five groups, and each group in primary coil 31 and the secondary coil 32 is spiral coiling, is connected in series mutually after the coiling, and as in secondary coil 32, in the middle of coil groups (3) was positioned at, its voltage was the highest; Coil groups (2) and (4) are positioned at the both sides of coil groups (3), and its voltage is inferior high; About coil groups (1) and (5) were positioned at, its voltage was minimum.The layer of secondary coil 31 and secondary coil 32 (group) number and turn ratio can be determined according to the input voltage and the needed output voltage of transformer.Diode among the figure all is rectifier diodes, and rectifier diode all is arranged on the outside of transformer.
Transformer of the present invention is selecting for use the better performances ferrite material as magnetic core and the reliable High-Voltage Insulation of assurance, under the situation of same input and output voltage, its volume only is about 1/3rd of a traditional transformer, deserve to be called low-cost, high-quality kickback transformer of new generation, satisfied the large batch of needs of commercially producing with high definition TV.
Claims (4)
1, a kind of flyback transformer with planar spiral winding, this kickback transformer comprises magnetic core, primary coil, secondary coil, it is characterized in that: magnetic core is covered by first magnetic patch that is symmetrical structure and second magnetic patch and forms, first magnetic patch is a discoid and middle part convex cylindrical, convex cylindrical and magnetic patch edge form annular groove, and slot opening is downward, and second magnetic patch is a discoid and middle part convex cylindrical, convex cylindrical and magnetic patch edge form annular groove, and slot opening upwards; Primary coil and secondary coil convex cylindrical all above, second magnetic patch be the center with the spiral coil coiling for two-layer at least above and folded mutually layer by layer, head and the tail serial connection mutually between the layer of primary coil, between the layer of secondary coil also head and the tail be connected in series mutually.
2, flyback transformer with planar spiral winding as claimed in claim 1 is characterized in that: the stacked axial middle part of groove that places of described secondary coil, primary coil layer be divided into two parts be stacked and placed on respectively secondary coil about.
3, flyback transformer with planar spiral winding as claimed in claim 2 is characterized in that: it is the high-voltage line ring layer that described secondary wire ring layer distributes with the centre, be the stacked distribution of sub-high pressure coil layer gradually up and down.
4, as each described flyback transformer with planar spiral winding among the claim 1-3, it is characterized in that: between each layer in the described primary coil layer, in the secondary wire ring layer each the layer between and all be stacked with heat insulating lamella between primary coil layer and the secondary wire ring layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113131 CN1214412C (en) | 2001-06-27 | 2001-06-27 | Flyback transformer with planar spiral winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113131 CN1214412C (en) | 2001-06-27 | 2001-06-27 | Flyback transformer with planar spiral winding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1393893A CN1393893A (en) | 2003-01-29 |
| CN1214412C true CN1214412C (en) | 2005-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01113131 Expired - Fee Related CN1214412C (en) | 2001-06-27 | 2001-06-27 | Flyback transformer with planar spiral winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1214412C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090029B (en) * | 2006-06-12 | 2010-05-12 | 台达电子工业股份有限公司 | Transformer |
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2001
- 2001-06-27 CN CN 01113131 patent/CN1214412C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1393893A (en) | 2003-01-29 |
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