CN203444962U - Planar transformer - Google Patents
Planar transformer Download PDFInfo
- Publication number
- CN203444962U CN203444962U CN201320528138.XU CN201320528138U CN203444962U CN 203444962 U CN203444962 U CN 203444962U CN 201320528138 U CN201320528138 U CN 201320528138U CN 203444962 U CN203444962 U CN 203444962U
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- CN
- China
- Prior art keywords
- transformer
- winding
- secondary winding
- planar transformer
- magnetic core
- 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 - Fee Related
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Abstract
The utility model relates to the field of transformers, in particular to a planar transformer. The planar transformer comprises primary windings, secondary windings and a magnetic core, the primary windings and the secondary windings are in a copper sheet stacked mode and are placed in stagger. The planar transformer is small in size and thickness, simple in structure, high in working efficiency, large in power density, good in radiating effect, small in radiated interference, high in insulating strength, and capable of reducing leakage inductance and saving space cost.
Description
Technical field
The utility model relates to field transformer, especially a kind of flat surface transformer.
Background technology
Transformer is to utilize the principle of electromagnetic induction to change the device of alternating voltage, and main member is primary coil, secondary coil and magnetic core.Major function has: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing (magnetic saturation transformer) etc.By purposes, can be divided into: distribution transformer, power transformer, full-sealed transformer, combined transformer, dry-type transformer, oil-filled transformer, single-phase transformer, furnace transformer, rectifier transformer etc.
Transformer is a key element in power supply.Traditional transformer consists of iron oxidation magnetic core and copper coil conventionally, bulky and easily produce electromagnetic interference.
For traditional transformer, the magnetic flux that primary coil produces not all passes secondary coil, so just produced leakage inductance, the tight requirement of electromagnetic coupled also cannot meet.
Summary of the invention
The utility model is not enough for prior art, provides that a kind of volume is little, thickness is little, simple in structure, operating efficiency is high, power density is large, good heat dissipation effect, electromagnetic interference is little, dielectric strength is high, can reduce the flat surface transformer of leakage inductance.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of flat surface transformer, comprise armature winding and secondary winding and magnetic core, described armature winding and secondary winding are copper sheet stacked system, and described armature winding and secondary winding are alternately placed.
In technique scheme, described secondary winding is the winding of a circle.
In technique scheme, described armature winding both sides are provided with a secondary winding.
In technique scheme, described magnetic core height is less than 46mm.
The utility model compared with prior art, there is following beneficial effect: the utility model volume is little, thickness is little, simple in structure, operating efficiency is high, power density is large, good heat dissipation effect, electromagnetic interference is little, dielectric strength is high, can reduce leakage inductance, save space cost.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail: referring to Fig. 1, a kind of flat surface transformer, comprises armature winding 1 and secondary winding 2 and magnetic core 3.
Described armature winding 1 and secondary winding 2 are copper sheet stacked system, and with the undersized E type of high-frequency power ferrite magnetic core 3, volume low height is low, and described magnetic core 3 is highly less than 46mm.
Armature winding 1 both sides are provided with a secondary winding 2.Described secondary winding 2 is the winding of a circle, has low direct current copper resistance.
Described armature winding 1 and secondary winding 2 are alternately placed, primary and secondary winding connects respectively a copper cash, alternately places the coupling that has increased primary and secondary winding, leakage inductance little Yu 2 μ H, high efficiency 99%, secondary winding 2 connects respectively the current sharing that guarantees electric current on rectifier diode.
Primary and secondary winding is all that the copper sheet processing and fabricating of standard is convenient, is convenient to large-scale production.The planar structure that flat surface transformer is special and the close-coupled of winding, reduce high frequency parasitic parameter greatly, improved the operating state of Switching Power Supply, improved the stability of Switching Power Supply.
The utility model output current, between 500A-1000A, is saved space cost.
Claims (4)
1. a flat surface transformer, comprise armature winding (1) and secondary winding (2) and magnetic core (3), it is characterized in that: described armature winding (1) and secondary winding (2) are copper sheet stacked system, described armature winding (1) and secondary winding (2) are alternately placed.
2. a kind of flat surface transformer as claimed in claim 1, is characterized in that: described secondary winding (2) is the winding of a circle.
3. a kind of flat surface transformer as claimed in claim 1, is characterized in that: described armature winding (1) both sides are provided with a secondary winding (2).
4. a kind of flat surface transformer as claimed in claim 1, is characterized in that: described magnetic core (3) is highly less than 46mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528138.XU CN203444962U (en) | 2013-08-28 | 2013-08-28 | Planar transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528138.XU CN203444962U (en) | 2013-08-28 | 2013-08-28 | Planar transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444962U true CN203444962U (en) | 2014-02-19 |
Family
ID=50095989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320528138.XU Expired - Fee Related CN203444962U (en) | 2013-08-28 | 2013-08-28 | Planar transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203444962U (en) |
-
2013
- 2013-08-28 CN CN201320528138.XU patent/CN203444962U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20140828 |
|
| EXPY | Termination of patent right or utility model |