CN102610378A - Flat transformer for switching power supply - Google Patents
Flat transformer for switching power supply Download PDFInfo
- Publication number
- CN102610378A CN102610378A CN2012100264250A CN201210026425A CN102610378A CN 102610378 A CN102610378 A CN 102610378A CN 2012100264250 A CN2012100264250 A CN 2012100264250A CN 201210026425 A CN201210026425 A CN 201210026425A CN 102610378 A CN102610378 A CN 102610378A
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- coil
- flat
- power supply
- transformer
- switching power
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Abstract
The invention discloses a flat transformer for switching a power supply. The flat transformer includes a magnetic core, a low-voltage coil and a high-voltage coil coupled together through the magnetic core, wherein the low-voltage coil is a flat coil, which includes a plurality of stacked coils; and the stacked coils consist of at least two C-shaped metal rings stacked together. The flat coil of the transformer is selected from the stacked coils to increase the surface area of the coil conductor, thereby improving cross-section utilization rate of the flat coil conductor, reducing effective resistance and improving efficiency of the transformer.
Description
[technical field]
The present invention relates to Switching Power Supply, relate in particular to a kind of flat-plate transformer of Switching Power Supply.
[background technology]
The operating frequency of the flat-plate transformer of Switching Power Supply is very high, and for high power switching power supply, the high-frequency current of low-pressure end is very big; Because the kelvin effect of high-frequency current; Plate coil cross-sectional area of conductor utilance descends, and actual resistance increases, and has a strong impact on the efficient of transformer.
The Switching Power Supply of using on the automobile like charge power supply, need satisfy automobile harsh vibration condition and radiating condition.In order to satisfy the heat radiation requirement; The magnetic core of Vehicular rechargeable power supply flat-plate transformer is fixed on the radiator of Switching Power Supply; The part pin of transformer plate coil then is fixed on the circuit board of Switching Power Supply, and the plate coil that rigidly fixes can not produce buffering between circuit board and radiator, under the vibrational state of running car; Or under the accurate inadequately condition of assembling, all possibly make the parts of Switching Power Supply produce very big stress.
[summary of the invention]
The technical problem that the present invention will solve provides the flat-plate transformer of the high Switching Power Supply of a kind of coil-conductor cross section utilance.
The technical problem that the present invention further will solve provides the flat-plate transformer of the good Switching Power Supply of a kind of vibration-isolating effect.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopts is; A kind of flat-plate transformer of Switching Power Supply comprises magnetic core, passes through low-voltage coil and high-tension coil that magnetic core is coupled, and described low-voltage coil is a plate coil; Described plate coil comprises a plurality of multilayer coils, and described multilayer coil is by at least two C shape ringle range upon range of compositions.
The flat-plate transformer of above-described Switching Power Supply, described multilayer coil are soft copper belt superimposing thread circles, and described soft copper band constitutes by the plural layer copper sheet is range upon range of.
The flat-plate transformer of above-described Switching Power Supply, said high-tension coil comprise a plurality of dull and stereotyped line cakes, described a plurality of dull and stereotyped line cakes and multilayer coil axially being staggered along magnetic core.
The flat-plate transformer of above-described Switching Power Supply, described plate coil comprise 1 veneer coil, and described veneer coil is a veneer C shape ringle, and the veneer coil arrangement is positioned at the lower end of dull and stereotyped line cake and multilayer coil combination between two dull and stereotyped line cakes.
The flat-plate transformer of above-described Switching Power Supply comprises two overhanging pins, and described pin is connected with input, the output of low-voltage coil respectively; Wherein, at least 1 pin is conducting metal row.
The flat-plate transformer of above-described Switching Power Supply; Two overhanging pins all are conducting metal rows; Described conducting metal row is rectangular tabular, and two conducting metal rows are parallel to each other, and comprise the installation screwed hole of the sub-components and parts of large-current electric and the installing hole of transformer on the conducting metal row.
The flat-plate transformer of above-described Switching Power Supply, the sub-components and parts of described large-current electric are power tube, rectifying tube or resistance.
The flat-plate transformer of above-described Switching Power Supply, wherein 1 conducting metal row is the outside ennation of veneer coil one end.
The plate coil of transformer of the present invention adopts multilayer coil, has increased the surface area of coil-conductor, can improve the cross section utilance of plate coil conductor, reduces effective resistance, promotes the efficient of transformer.
[description of drawings]
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is that the embodiment of the invention 1 flat-plate transformer is assemblied in the stereogram on the circuit board.
Fig. 2 is that the embodiment of the invention 1 flat-plate transformer is assemblied in the front view on the circuit board.
Fig. 3 is that A among Fig. 2 is to cutaway view.
Fig. 4 is that B among Fig. 2 is to cutaway view.
Fig. 5 is the exploded view of the embodiment of the invention 1 flat-plate transformer.
Fig. 6 is the vertical view of the embodiment of the invention 1 flat-plate transformer.
Fig. 7 is the outline drawing of the embodiment of the invention 1 flat-plate transformer veneer coil and pin.
[embodiment]
Fig. 1 to the embodiment of the invention 1 shown in Figure 5 be the circuit board 20 of vehicle charging power supply and the output transformer of Switching Power Supply.
Transformer comprises magnetic core 1, high-tension coil and dull and stereotyped low-voltage coil, and low-voltage coil and high-tension coil are through magnetic core 1 coupling. dull and stereotyped low-voltage coil is a plate coil, and high-tension coil is the transformer input, and dull and stereotyped low-voltage coil is the output of transformer.
Dull and stereotyped low-voltage coil is made up of 3 multilayer coils 301 and 1 veneer coil 302, and each multilayer coil 301 is by two C shape ringle 301a and 301b is range upon range of forms.Veneer coil 302 is C shape ringles of veneer.
High-tension coil is made up of the dull and stereotyped line cake 401 of 5 lead coilings, and 4 dull and stereotyped line cakes 401 and multilayer coil 301 axially are staggered along magnetic core 1, and 3 multilayer coils 301 are clipped between 4 dull and stereotyped line cakes 401; Veneer coil 302 is arranged between nethermost two dull and stereotyped line 401 cakes, is positioned at the lower end of dull and stereotyped line cake 401 and multilayer coil 301 combinations.
3 multilayer coils 301 and 1 veneer coil 302 are divided into two groups, and two top multilayer coil series connection are the 1st group, and the 3rd multilayer coil and 1 veneer coil series connection are the 2nd group, and every group of coil drawn 1 centre tap, the 1st group of coil and the 2nd group of coils from parallel connection of coils.
3 ports of dull and stereotyped low-voltage coil connect the 1st output pin the 8, the 2nd output pin 9 and centre tap pin 10 respectively after connecting with bolt 5,6,7.
The lower end of the 1st output pin 8 and the 2nd output pin 9 is connected with the radiator of Switching Power Supply, and centre tap pin 10 is connected with circuit board 20.
3 multilayer coils 301 are by two C shape ringle 301a and 301b is range upon range of forms; Increase the surface area of coil-conductor, can suppress the kelvin effect of high-frequency current effectively, improved the cross section utilance of plate coil conductor; Reduce effective resistance, improve the efficient of transformer.The nethermost veneer coil 302 of dull and stereotyped low-voltage coil has enough thickness, and enough intensity is arranged when being threaded with bolt 5 and 7 with assurance.
In order to improve the flexibility of multilayer coil, multilayer coil can adopt the soft copper band, and the soft copper band constitutes by the multiple layer of copper cortex is folded, can absorb distortion and vibration between circuit board and the radiator, prevents that parts from damaging.
The structure of the embodiment of the invention 2 such as Fig. 6 and shown in Figure 7, transformer comprise two conducting metal rows 8 and 9 as overhanging pin of dull and stereotyped low-voltage coil.
The conducting metal row 8,9 who is connected with dull and stereotyped low-voltage coil two inputs, outputs is rectangular tabular; Two conducting metal rows 8,9 are parallel to each other, and on the conducting metal row 8,9 the installation screwed hole 801 of the sub-components and parts of large-current electric and the installing hole 802 of transformer are arranged.
10 sub-components and parts of large-current electric (power tube, rectifying tube or resistance) 100 are arranged in two conducting metal rows' 8,9 upper surface, and the thermal conductive surface of the sub-components and parts 100 of large-current electric contacts with conducting metal row 8,9 upper surface.Installing hole and the transformer installing hole 802 on the conducting metal row 8,9 that the transformer mounting screw passes 4 sub-components and parts 100 of large-current electric respectively are screwed into the transformer installation screwed hole on the flat radiator, and transformer is fixed on the flat radiator.The installing hole that the electronic devices and components mounting screw passes the sub-components and parts 100 of all the other large-current electrics is screwed into the installation screwed hole 801 of the sub-components and parts of large-current electric on the electric metal row, and all the other 6 sub-components and parts of large-current electric are separately fixed on the conducting metal row 8,9.
Conducting metal row 8,9 can with dull and stereotyped low-voltage coil split production, in the present embodiment.Conducting metal row 8 is integrative-structures with veneer coil 302, and is as shown in Figure 7, and conducting metal row 8 be structure as a whole with veneer coil 302, and conducting metal row 8 is exactly the outside extension of veneer coil 302 openings, one end.
Claims (8)
1. the flat-plate transformer of a Switching Power Supply; Comprise magnetic core, pass through low-voltage coil and high-tension coil that magnetic core is coupled; Described low-voltage coil is a plate coil; It is characterized in that described plate coil comprises a plurality of multilayer coils, described multilayer coil is by at least two C shape ringle range upon range of compositions.
2. the flat-plate transformer of Switching Power Supply according to claim 1 is characterized in that, described multilayer coil is a soft copper belt superimposing thread circle, and described soft copper band constitutes by the plural layer copper sheet is range upon range of.
3. the flat-plate transformer of Switching Power Supply according to claim 1 is characterized in that, said high-tension coil comprises a plurality of dull and stereotyped line cakes, described a plurality of dull and stereotyped line cakes and multilayer coil axially being staggered along magnetic core.
4. the flat-plate transformer of Switching Power Supply according to claim 3; It is characterized in that; Described plate coil comprises 1 veneer coil; Described veneer coil is a veneer C shape ringle, and the veneer coil arrangement is positioned at the lower end of dull and stereotyped line cake and multilayer coil combination between two dull and stereotyped line cakes.
5. the flat-plate transformer of Switching Power Supply according to claim 4 is characterized in that, comprises two overhanging pins, and described pin is connected with input, the output of low-voltage coil respectively; Wherein, at least 1 pin is conducting metal row.
6. the flat-plate transformer of Switching Power Supply according to claim 5; It is characterized in that; Two overhanging pins all are conducting metal rows; Described conducting metal row is rectangular tabular, and two conducting metal rows are parallel to each other, and comprise the installation screwed hole of the sub-components and parts of large-current electric and the installing hole of transformer on the conducting metal row.
7. the flat-plate transformer of Switching Power Supply according to claim 6 is characterized in that, the sub-components and parts of described large-current electric are power tube, rectifying tube or resistance.
8. the flat-plate transformer of Switching Power Supply according to claim 6 is characterized in that, wherein 1 conducting metal row is the outside ennation of veneer coil one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100264250A CN102610378A (en) | 2012-02-07 | 2012-02-07 | Flat transformer for switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100264250A CN102610378A (en) | 2012-02-07 | 2012-02-07 | Flat transformer for switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102610378A true CN102610378A (en) | 2012-07-25 |
Family
ID=46527683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100264250A Pending CN102610378A (en) | 2012-02-07 | 2012-02-07 | Flat transformer for switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102610378A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282422A (en) * | 2013-07-08 | 2015-01-14 | 康舒科技股份有限公司 | High-efficiency transformer |
| CN104766706A (en) * | 2014-01-06 | 2015-07-08 | 吴李文相 | Modular coil plate and coiling assembly thereof, and plane transformer comprising coil plate or coil assembly |
| WO2023010868A1 (en) * | 2021-08-04 | 2023-02-09 | 南京迪威尔高端制造股份有限公司 | Magnetic particle inspection apparatus for annular workpiece |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5179365A (en) * | 1989-12-29 | 1993-01-12 | At&T Bell Laboratories | Multiple turn low profile magnetic component using sheet windings |
| CN1232572A (en) * | 1996-08-05 | 1999-10-20 | 国际功率装置公司 | Planar transformer |
| JP2004349562A (en) * | 2003-05-23 | 2004-12-09 | Keihin Corp | Transformer and coil for transformer |
| US20070176722A1 (en) * | 2006-01-30 | 2007-08-02 | Nemic-Lambda Ltd. | High-current electrical coil, and transformer construction including same |
| US20080088401A1 (en) * | 2006-10-16 | 2008-04-17 | Delta Electronics, Inc. | Transformer |
| CN201594463U (en) * | 2009-08-20 | 2010-09-29 | 李战功 | Laminated chip flat-plate transformer |
| CN202473571U (en) * | 2012-02-07 | 2012-10-03 | 深圳麦格米特电气股份有限公司 | Flat transformer for switching power supply |
-
2012
- 2012-02-07 CN CN2012100264250A patent/CN102610378A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5179365A (en) * | 1989-12-29 | 1993-01-12 | At&T Bell Laboratories | Multiple turn low profile magnetic component using sheet windings |
| CN1232572A (en) * | 1996-08-05 | 1999-10-20 | 国际功率装置公司 | Planar transformer |
| JP2004349562A (en) * | 2003-05-23 | 2004-12-09 | Keihin Corp | Transformer and coil for transformer |
| US20070176722A1 (en) * | 2006-01-30 | 2007-08-02 | Nemic-Lambda Ltd. | High-current electrical coil, and transformer construction including same |
| US20080088401A1 (en) * | 2006-10-16 | 2008-04-17 | Delta Electronics, Inc. | Transformer |
| CN201594463U (en) * | 2009-08-20 | 2010-09-29 | 李战功 | Laminated chip flat-plate transformer |
| CN202473571U (en) * | 2012-02-07 | 2012-10-03 | 深圳麦格米特电气股份有限公司 | Flat transformer for switching power supply |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282422A (en) * | 2013-07-08 | 2015-01-14 | 康舒科技股份有限公司 | High-efficiency transformer |
| CN104766706A (en) * | 2014-01-06 | 2015-07-08 | 吴李文相 | Modular coil plate and coiling assembly thereof, and plane transformer comprising coil plate or coil assembly |
| WO2023010868A1 (en) * | 2021-08-04 | 2023-02-09 | 南京迪威尔高端制造股份有限公司 | Magnetic particle inspection apparatus for annular workpiece |
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Application publication date: 20120725 |