CN201323128Y - High power planar transformer - Google Patents
High power planar transformer Download PDFInfo
- Publication number
- CN201323128Y CN201323128Y CNU2008202042282U CN200820204228U CN201323128Y CN 201323128 Y CN201323128 Y CN 201323128Y CN U2008202042282 U CNU2008202042282 U CN U2008202042282U CN 200820204228 U CN200820204228 U CN 200820204228U CN 201323128 Y CN201323128 Y CN 201323128Y
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- CN
- China
- Prior art keywords
- magnetic core
- secondary coil
- insulating base
- coil
- offset plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Dc-Dc Converters (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to the technical field of transformers, in particular to a high power planar transformer, comprising a first magnetic core, a second magnetic core, a primary coil, a secondary coil and an insulating foundation support, wherein the primary coil and the secondary coil are self-adhesive coils; the insulating foundation support is provided with a central shaft hole, and the primary coil is arranged in the insulating foundation support to form an integrated structure with the insulating foundation support, and the secondary coil is stacked on the insulating foundation support; the first magnetic core and the second magnetic core are positioned at two sides of the insulating foundation support, and the first magnetic core and the second magnetic core form a magnetic circuit through the central shaft hole to couple the primary coil with the secondary coil. The coil of the utility model is independently arranged in an insulator, thereby having an high insulating degree; and the manufacturing process of the coil is simple as the coil can be integrally cast by using the mould; as the coil is arranged in the insulator, the structure is compacted and the volume of the transformer can be reduced, so that the utility model can be used for thinner electronic products.
Description
Technical field:
The utility model relates to the transformer technology field, refers in particular to a kind of high-power planar transformer.
Background technology:
Along with more and more higher, to also inevitable more and more higher as the requirement of the transformer of one of Switching Power Supply volume and weight bottleneck to the requirement of switch power density.Adopting flat surface transformer to replace traditional skeleton transformer is one of important development trend of current Switching Power Supply.
Existing flat surface transformer (especially big electric current, high power occasion), mostly with copper sheet as former/secondary winding, a plurality of this windings are stacked, form transformer with magnetic core then.The flat surface transformer of this structure, often there are the following problems: 1. the insulation distance of safety requirement is difficult realizes that especially the reinforced insulation that safety requires in the AC/DC converter implements more complicated, often needs special skeleton just can achieve the goal; 2. owing to be multilayer stack, the structural manufacturing process complexity, the processing difficulty is big.
Also have at present and adopt the flat surface transformer of PCB, but all be the situation that is used for the small-power occasion, such as secondary power supply DC/DC converter as winding.At this moment, as the PCB of Transformer Winding, the part of converter mainboard normally, specific practice is: form the former pair side of transformer winding in the appropriate location of mainboard PCB, and have the hole corresponding to core post, promptly form transformer after buckling magnetic core.The advantage of this structure is a compact conformation, and the transformer height is very low, and is very little to the influence of converter whole height.But, therefore must be subjected to the PCB number of plies and the thick restriction of copper, and can't pass through big electric current, so can only be used for the small-power occasion because Transformer Winding itself promptly is the part of mainboard PCB.
The utility model content:
The purpose of this utility model is exactly to provide a kind of high-power planar transformer at the deficiency of prior art existence, it is that primary coil and insulating base are made an overall structure, secondary coil coats by insulator, the coil manufacture craft is simple, coil is independently to be arranged in the insulator, and the watt level of transformer is not subjected to the limitation of coil.
To achieve these goals, the technical solution adopted in the utility model is: high-power planar transformer, comprise first magnetic core, second magnetic core, primary coil, secondary coil and insulating base, and primary coil and secondary coil are the self-adhesion coil;
Insulating base is provided with central axis hole, and primary coil is arranged on insulating base inside, becomes overall structure with insulating base, and secondary coil overlays on the insulating base;
First magnetic core and second magnetic core are placed the insulating base both sides, and first magnetic core and second magnetic core form a magnetic circuit by above-mentioned central axis hole, and primary coil and secondary coil are coupled together.
The edge of insulating base central axis hole is provided with the axle sleeve of annular.
Described secondary coil is arranged on the inside of offset plate, becomes overall structure with offset plate, and this offset plate is provided with through hole, and the internal diameter of this through hole is greater than the external diameter of axle sleeve, and offset plate is enclosed within on the axle sleeve by through hole.
Described primary coil and secondary coil have two groups respectively, and two groups of secondary coil order stack are placed on the insulating base, and being in also to fasten on one group of secondary coil of outer ring has a lid, and another group primary coil is arranged on lid portion inside, becomes overall structure with lid.
One group of secondary coil is arranged on the inside of offset plate, becomes overall structure with offset plate, and this offset plate is provided with through hole, and the internal diameter of this through hole is greater than the external diameter of axle sleeve, and offset plate is enclosed within on the axle sleeve by through hole; The wire rod of another group secondary coil is in same one deck, connects as one by the insulation colloid between the wire rod, and this secondary coil places on the offset plate.
Offer porosely in the middle of the described lid, the edge in hole is provided with the sleeve of annular, and the external diameter of this sleeve is less than the internal diameter of the central axis hole of insulating base, lid by jacket casing in the central axis hole of insulating base.
Described insulating base outwards is provided with extension, and extension is provided with lead terminal.
Described first magnetic core and second magnetic core are E type magnetic core.
The beneficial effects of the utility model are: coil of the present utility model is the inside that independently is arranged on insulator, for example, primary coil and insulating base are integrated, secondary coil is coated in the offset plate, insulation degree height, and the manufacture craft of coil is simple, gets final product by die casting is one-body molded; Because coil is arranged on insulator inside, can reduce the volume of transformer so that structure is compact more, make the utility model can be applied in the electronic product of slimming more.
Description of drawings:
Fig. 1 is the structural representation of one of the utility model execution mode;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of insulating base of the present utility model;
Fig. 4 is the structural representation of offset plate of the present utility model;
Fig. 5 is two a structural representation of the utility model execution mode;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 is two a cut-away view of the utility model execution mode.
Embodiment:
See Fig. 1 to 4, this is one of execution mode of the present utility model, comprises first magnetic core 1, second magnetic core 2, primary coil 3, secondary coil 4 and insulating base 5, and primary coil 3 and secondary coil 4 are the self-adhesion coil; Insulating base 5 is provided with central axis hole 5a, and the edge of insulating base 5 central axis hole 5a is provided with the axle sleeve 5b of annular, and primary coil 3 is arranged on insulating base 5 inside, becomes overall structure with insulating base 5; Described secondary coil 4 is arranged on the inside of offset plate 6, become overall structure with offset plate 6, this offset plate 6 is provided with through hole 6a, the internal diameter of this through hole 6a is greater than the external diameter of axle sleeve 5b, offset plate 6 is enclosed within on the axle sleeve 5b by through hole 6a, first magnetic core 1 and second magnetic core 2 are placed insulating base 5 both sides, and first magnetic core 1 and second magnetic core 2 form a magnetic circuit by above-mentioned central axis hole 5a, and primary coil 3 and secondary coil 4 are coupled together.
Described insulating base 5 outwards is provided with extension 5c, and extension 5c is provided with lead terminal 7.
Described first magnetic core 1 and second magnetic core 2 are E type magnetic core.
See Fig. 5 to 7, this is two of an execution mode of the present utility model, in the present embodiment, described primary coil 3 and secondary coil 4 have two groups respectively, one group of secondary coil 4 is arranged on the inside of offset plate 6, becomes overall structure with offset plate 6, and this offset plate 6 is provided with through hole 6a, the internal diameter of this through hole 6a is greater than the external diameter of axle sleeve 5b, and offset plate 6 is enclosed within on the axle sleeve 5b by through hole 6a; The wire rod of another group secondary coil 4 is in same one deck, connects as one by the insulation colloid between the wire rod, and this secondary coil 4 places on the offset plate 6; Be in also to fasten on one group of secondary coil 4 of outer ring a lid 8 is arranged, another group primary coil 3 is arranged on lid 8 inside, become overall structure with lid 8, offer porose in the middle of the described lid 8, the edge in hole is provided with the sleeve 8a of annular, the external diameter of this sleeve 8a is less than the internal diameter of the central axis hole 5a of insulating base 5, lid 8 is enclosed within the central axis hole 5a of insulating base 5 by sleeve 8a, first magnetic core 1 and second magnetic core 2 are placed insulating base 5 both sides, first magnetic core 1 and second magnetic core 2 form a magnetic circuit by above-mentioned central axis hole 5a, and primary coil 3 and secondary coil 4 are coupled together.Other structure is identical with one of execution mode, repeats no more here.
Certainly, the execution mode of the above, it is better embodiment of the present utility model, be not to be used for limiting practical range of the present utility model, so all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model claim.
Claims (8)
1, high-power planar transformer, comprise first magnetic core, second magnetic core, primary coil, secondary coil and insulating base, primary coil and secondary coil are the self-adhesion coil, it is characterized in that: insulating base is provided with central axis hole, primary coil is arranged on insulating base inside, become overall structure with insulating base, secondary coil overlays on the insulating base; First magnetic core and second magnetic core are placed the insulating base both sides, and first magnetic core and second magnetic core form a magnetic circuit by above-mentioned central axis hole, and primary coil and secondary coil are coupled together.
2, high-power planar transformer according to claim 1 is characterized in that: the edge of insulating base central axis hole is provided with the axle sleeve of annular.
3, high-power planar transformer according to claim 2, it is characterized in that: described secondary coil is arranged on the inside of offset plate, becomes overall structure with offset plate, and this offset plate is provided with through hole, the internal diameter of this through hole is greater than the external diameter of axle sleeve, and offset plate is enclosed within on the axle sleeve by through hole.
4, high-power planar transformer according to claim 2, it is characterized in that: described primary coil and secondary coil have two groups respectively, two groups of secondary coil order stack are placed on the insulating base, be in also to fasten on one group of secondary coil of outer ring a lid is arranged, another group primary coil is arranged on lid portion inside, becomes overall structure with lid.
5, high-power planar transformer according to claim 4, it is characterized in that: one group of secondary coil is arranged on the inside of offset plate, becomes overall structure with offset plate, and this offset plate is provided with through hole, the internal diameter of this through hole is greater than the external diameter of axle sleeve, and offset plate is enclosed within on the axle sleeve by through hole; The wire rod of another group secondary coil is in same one deck, connects as one by the insulation colloid between the wire rod, and this secondary coil places on the offset plate.
6, high-power planar transformer according to claim 4, it is characterized in that: offer porose in the middle of the described lid, the edge in hole is provided with the sleeve of annular, and the external diameter of this sleeve is less than the internal diameter of the central axis hole of insulating base, lid by jacket casing in the central axis hole of insulating base.
7, according to any described high-power planar transformer of claim 1 to 6, it is characterized in that: described insulating base outwards is provided with extension, and extension is provided with lead terminal.
8, according to any described high-power planar transformer of claim 1 to 6, it is characterized in that: described first magnetic core and second magnetic core are E type magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202042282U CN201323128Y (en) | 2008-11-28 | 2008-11-28 | High power planar transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202042282U CN201323128Y (en) | 2008-11-28 | 2008-11-28 | High power planar transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201323128Y true CN201323128Y (en) | 2009-10-07 |
Family
ID=41160503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202042282U Expired - Lifetime CN201323128Y (en) | 2008-11-28 | 2008-11-28 | High power planar transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201323128Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934551A (en) * | 2010-08-09 | 2011-01-05 | 上海龙磁电子科技有限公司 | Magnetic circuit structure of high-central-field magnetic shoe mould |
| CN101533705B (en) * | 2008-11-28 | 2011-05-25 | 东莞创慈磁性元件有限公司 | High-power planar transformer |
-
2008
- 2008-11-28 CN CNU2008202042282U patent/CN201323128Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533705B (en) * | 2008-11-28 | 2011-05-25 | 东莞创慈磁性元件有限公司 | High-power planar transformer |
| CN101934551A (en) * | 2010-08-09 | 2011-01-05 | 上海龙磁电子科技有限公司 | Magnetic circuit structure of high-central-field magnetic shoe mould |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091007 Effective date of abandoning: 20081128 |