CN211237921U - Magnetic integrated transformer applied to switching power supply - Google Patents
Magnetic integrated transformer applied to switching power supply Download PDFInfo
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- CN211237921U CN211237921U CN201922283054.4U CN201922283054U CN211237921U CN 211237921 U CN211237921 U CN 211237921U CN 201922283054 U CN201922283054 U CN 201922283054U CN 211237921 U CN211237921 U CN 211237921U
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Abstract
The magnetic integrated transformer applied to the switching power supply comprises a first magnetic column and a second magnetic column which are arranged in a split manner; the first magnetic column and the second magnetic column are respectively wound with a first coil and a second coil; the first coil and the second coil are connected in series to form an integrated coil, the winding directions of the first coil and the second coil are opposite, and magnetic fluxes with opposite directions are superposed or offset at each position of the integrated magnetic core, so that the loss of the magnetic core can be reduced; when the first magnetic core and the second magnetic core are combined into the integrated magnetic core, the first side column and the second side column are eliminated, and the second flying lead and the third flying lead welding spot are omitted in the integrated coil; the utility model discloses both satisfied will reduce the transformer volume, reduce transformer flying wire number and reach the purpose that effectively reduces the magnetic core loss again.
Description
Technical Field
The utility model belongs to the technical field of the transformer technique and specifically relates to be applied to switching power supply's integrated transformer of magnetism.
Background
With the development of modern power electronic technology, the popularization of magnetic element application and the continuous improvement of the automation degree of magnetic element production, the integration technology of the magnetic element is more and more widely applied. The transformer is an important component of the converter, but the transformer has the defects of complex structure, large volume, low working frequency and the like, so that the efficiency of a power supply system is low, and the reliability of a product is poor.
At present, a Chinese patent with a patent number of CN206602014U discloses an integral integrated magnetic core, which is characterized in that a conventional U-shaped magnetic core is divided into three different parts, the three parts adopt different magnetic conductivities and a snap-in combination mode, two coils are mutually influenced, magnetic fluxes generated by the two coils are mutually superposed, all the U-shaped magnetic cores can normally work only by being connected in this way, the loss cannot be reduced, and the volume cannot be reduced; for the adaptation to correspond the transformation of the integrated transformer of magnetism that is used for switching power supply, satisfy and both to reduce the transformer volume and save space, and reduce the transformer flying wire number and reduce the solder joint number on the PCB board, reach effectively reducing the magnetic core loss again, improve power efficiency, reduce the purpose of transformer temperature, need utility model a reach the integrated transformer of magnetism of this purpose.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide the integrated transformer of magnetism that is applied to switching power supply.
The utility model provides a its technical problem take following technical scheme to realize:
the magnetic integrated transformer applied to the switching power supply comprises an integrated magnetic core, wherein the integrated magnetic core comprises a first magnetic column, a second magnetic column and an integrated magnetic plate which is integrated with the first magnetic column and the second magnetic column; the first magnetic column and the second magnetic column are respectively wound with a first coil and a second coil; the first coil and the second coil are connected in series to form an integrated coil.
Preferably, the winding directions of the first coil and the second coil are opposite.
Preferably, the two ends of the integrated magnetic plate are provided with integrated side columns.
Preferably, the height of the first magnetic column is the same as that of the second magnetic column, and is smaller than that of the integrated side column.
Preferably, the magnetic integrated transformer applied to the switching power supply is formed by buckling two integrated magnetic cores, and a first air gap and a second air gap are arranged at the buckled first magnetic column and the buckled second magnetic column; the first air gap and the second air gap are respectively used for preventing the magnetic fluxes generated by the first magnetic column and the second magnetic column from influencing each other.
Preferably, both ends of the integrated coil include a first flying lead and a fourth flying lead.
The utility model has the advantages that:
1. the utility model comprises an integrated magnetic core, which comprises a first magnetic column, a second magnetic column and an integrated magnetic plate integrated with the first magnetic column and the second magnetic column; the first magnetic column and the second magnetic column are respectively wound with a first coil and a second coil; the first coil and the second coil are connected in series to form an integrated coil; two magnetic fluxes with opposite directions generated by the first coil and the second coil are superposed or offset at each position of the integrated magnetic core, so that the magnetic core loss can be reduced, the power supply efficiency is improved, and the temperature of the transformer is reduced.
2. In the utility model, the first magnetic core and the second magnetic core respectively comprise a first side column and a second side column; when the first magnetic core and the second magnetic core are combined into the integrated magnetic core, the first side column and the second side column are omitted, and therefore space is saved.
3. In the utility model, two ends of the first coil respectively comprise a first flying wire and a second flying wire, and two welding spots can be generated on the welding pad; two ends of the second coil respectively comprise a third flying wire and a fourth flying wire, and two welding spots can be generated on the bonding pad; through integration, the second flying lead and the third flying lead welding spot are omitted from the integrated coil, so that the number of flying leads of the transformer is reduced, and the number of welding spots on the PCB is reduced.
4. In the utility model, a first air gap and a second air gap are arranged at the first magnetic column and the second magnetic column which are buckled; the first air gap and the second air gap are respectively used for preventing the magnetic fluxes generated by the first magnetic column and the second magnetic column from influencing each other.
Drawings
Fig. 1 is a schematic structural view of two integrated magnetic cores fastened together according to the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
fig. 3 is a schematic diagram of the structure of the integrated magnetic core in the present invention;
fig. 4 is a schematic structural view of the first and second magnetic cores of the present invention;
in the figure: 1. an integrated magnetic core; 2. a first magnetic core; 3. a second magnetic core; 11. an integrated coil; 21. a first coil; 31. a second coil; 101. integrating the magnetic plate; 102. integrating the side columns; 201. a first magnetic pillar; 202. a first air gap; 203. a first side column; 211. a first flying lead; 212. a second flying lead; 301. a second magnetic pillar; 302. a second air gap; 303. a second side column; 311. a third flying lead; 312. and a fourth flying wire.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings:
as shown in fig. 1-3, the magnetic integrated transformer for switching power supply of the present invention comprises an integrated magnetic core 1, wherein the integrated magnetic core 1 comprises a first magnetic pillar 201, a second magnetic pillar 301, and an integrated magnetic plate 101 integrated with the first magnetic pillar 201 and the second magnetic pillar 301; the first magnetic pillar 201 and the second magnetic pillar 301 are wound with a first coil 21 and a second coil 31 respectively; the first coil 21 and the second coil 31 are connected in series to form an integrated coil 11, and the winding directions of the first coil 21 and the second coil 31 are opposite; the two ends of the integrated coil 11 comprise a first flying wire 211 and a fourth flying wire 312;
two ends of the integrated magnetic plate 101 are provided with integrated side columns 102; the heights of the first magnetic column 201 and the second magnetic column 301 are the same and are smaller than the height of the integrated side column 102; the magnetic integrated transformer applied to the switching power supply is formed by buckling two integrated magnetic cores 1, and a first air gap 202 and a second air gap 302 are arranged at the buckled first magnetic column 201 and the second magnetic column 301; the first air gap 202 and the second air gap 302 are respectively used for preventing the magnetic fluxes generated by the first magnetic pillar 201 and the second magnetic pillar 301 from influencing each other, and the two magnetic fluxes with opposite directions are superposed or offset at each position of the integrated magnetic core 1, so that the magnetic core loss can be reduced;
as shown in fig. 3 and 4, the first magnetic core 2 and the second magnetic core 3 respectively include a first side column 203 and a second side column 303; the integrated magnetic core 1 comprises the first magnetic column 201, the second magnetic column 301 and the integrated magnetic plate 101 which is integrated with the first magnetic column 201 and the second magnetic column 301, the first side column 203 and the second side column 303 are omitted, and the integrated side columns 102 are only arranged on two sides of the integrated magnetic core 1, so that the space is saved.
As shown in fig. 1, two ends of the first coil 21 respectively include a first flying lead 211 and a second flying lead 212, which will generate two solder points on a pad; the two ends of the second coil 31 respectively include a third flying wire and a fourth flying wire 312, which can generate two welding spots on the pad; by integration, the integrated coil 11 omits the second flying lead 212 and the third flying lead solder, and both ends of the integrated coil 11 only include the first flying lead 211 solder and the fourth flying lead 312 solder, thereby reducing the number of pads.
In specific implementation, the first magnetic core 2 and the second magnetic core 3 respectively include a first side column 203 and a second side column 303; the integrated magnetic core 1 comprises the first magnetic column 201, the second magnetic column 301, and the integrated magnetic plate 101 integrated with the first magnetic column 201 and the second magnetic column 301, and the first side column 203 and the second side column 303 are eliminated; the first coil 21 and the second coil 31 are wound by the first magnetic core 2 and the second magnetic core 3; the first coil 21 and the second coil 31 are connected in series, the winding directions of the first coil 21 and the second coil 31 are opposite, and magnetic fluxes with opposite directions are superposed or offset at each position of the integrated magnetic core 1, so that the magnetic core loss can be reduced; the integrated coil 11 omits the second flying lead 212 and the third flying lead solder joint; the magnetic integrated transformer applied to the switching power supply is formed by buckling two integrated magnetic cores 1, and a first air gap 202 and a second air gap 302 are arranged at the buckled first magnetic column 201 and the second magnetic column 301; the first air gap 202 and the second air gap 302 are used to prevent the magnetic flux generated by the first coil 21 from flowing through the winding pillar of the second coil 31 and the magnetic flux generated by the second coil 31 from flowing through the winding pillar of the first coil 21, respectively.
The utility model discloses an integrated magnetic core 1, integrated magnetic core 1 includes first magnetic column 201, second magnetic column 301, and with first magnetic column 201 the integrated magnetic sheet 101 of second magnetic column 301 synthesis an organic whole; the first magnetic pillar 201 and the second magnetic pillar 301 are wound with a first coil 21 and a second coil 31 respectively; the first coil 21 and the second coil 31 are connected in series to form an integrated coil 11, the winding directions of the first coil 21 and the second coil 31 are opposite, and magnetic fluxes in the two opposite directions are superposed or offset at each position of the integrated magnetic core 1, so that the magnetic core loss can be reduced; when the first magnetic core 2 and the second magnetic core 3 are combined into the integrated magnetic core 1, the first side column 203 and the second side column 303 are eliminated, and the second flying lead 212 and the third flying lead welding spot are omitted from the integrated coil 11; the utility model discloses both satisfied will reduce the transformer volume, reduce transformer flying wire number and reach the purpose that effectively reduces the magnetic core loss again.
It should be emphasized that the embodiments of the present invention are illustrative and not restrictive, and therefore the present invention is not limited to the embodiments described in the detailed description, and all other embodiments derived from the technical solutions of the present invention by those skilled in the art also belong to the scope of the present invention.
Claims (6)
1. Be applied to switching power supply's magnetism integrated transformer, its characterized in that: the magnetic core comprises an integrated magnetic core (1), wherein the integrated magnetic core (1) comprises a first magnetic column (201), a second magnetic column (301) and an integrated magnetic plate (101) which is integrated with the first magnetic column (201) and the second magnetic column (301); the first magnetic column (201) and the second magnetic column (301) are wound with a first coil (21) and a second coil (31) respectively; the first coil (21) and the second coil (31) are connected in series to form an integrated coil (11).
2. The magnetic integrated transformer applied to the switching power supply as set forth in claim 1, wherein: the winding directions of the first coil (21) and the second coil (31) are opposite.
3. The magnetically integrated transformer applied to the switching power supply of claim 2, wherein: and two ends of the integrated magnetic plate (101) are provided with integrated side columns (102).
4. The magnetically integrated transformer applied to the switching power supply of claim 3, wherein: the height of the first magnetic column (201) is the same as that of the second magnetic column (301), and is smaller than that of the integrated side column (102).
5. The magnetically integrated transformer applied to the switching power supply of claim 4, wherein: the magnetic integrated transformer applied to the switching power supply is formed by buckling two integrated magnetic cores (1), and a first air gap (202) and a second air gap (302) are arranged at the buckled first magnetic column (201) and the second magnetic column (301); the first air gap (202) and the second air gap (302) are used for preventing magnetic fluxes generated by the first magnetic column (201) and the second magnetic column (301) from influencing each other.
6. The magnetic integrated transformer applied to the switching power supply as set forth in claim 1, wherein: the two ends of the integrated coil (11) comprise a first flying wire (211) and a fourth flying wire (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922283054.4U CN211237921U (en) | 2019-12-18 | 2019-12-18 | Magnetic integrated transformer applied to switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922283054.4U CN211237921U (en) | 2019-12-18 | 2019-12-18 | Magnetic integrated transformer applied to switching power supply |
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| Publication Number | Publication Date |
|---|---|
| CN211237921U true CN211237921U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922283054.4U Active CN211237921U (en) | 2019-12-18 | 2019-12-18 | Magnetic integrated transformer applied to switching power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331461A (en) * | 2020-11-03 | 2021-02-05 | 衡山萌泰电子有限公司 | Resonance transformer |
-
2019
- 2019-12-18 CN CN201922283054.4U patent/CN211237921U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331461A (en) * | 2020-11-03 | 2021-02-05 | 衡山萌泰电子有限公司 | Resonance transformer |
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