CN106449043A - Magnetic core of transformer - Google Patents
Magnetic core of transformer Download PDFInfo
- Publication number
- CN106449043A CN106449043A CN201611128191.5A CN201611128191A CN106449043A CN 106449043 A CN106449043 A CN 106449043A CN 201611128191 A CN201611128191 A CN 201611128191A CN 106449043 A CN106449043 A CN 106449043A
- Authority
- CN
- China
- Prior art keywords
- stem
- magnetic
- core
- base
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F2003/106—Magnetic circuits using combinations of different magnetic materials
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention relates to a magnetic core of a transformer. The magnetic core comprises a first core column in a crank shape, a second core column in a crank shape and a base. The first core column, the second core column and the base form a closed magnetic circuit in a square shape. The first core column is made of a ferrite material, and the second core column is made of a material with the magnetic permeability lower than that of the ferrite material. The closed magnetic circuit comprises a first magnetic path formed to penetrate through the first core column and a second magnetic path formed to penetrate through the second core column, and the length of the second magnetic path is smaller than that of the first magnetic path. Coolers are arranged on the two sides of the base. As the magnetic core is made of the ferrite material and the powder material which are different in magnetic permeability, the direct-current superposition characteristic of the magnetic core can be ensured, and the copper loss of the magnetic core can be reduced; besides, as the length of the first core column made of the ferrite material is set to be larger than that of the second core column made of the material with the lower magnetic permeability, the inductance of the transformer can be increased, and meanwhile the manufacturing cost is reduced.
Description
Technical field
The present invention relates to a kind of magnetic core is and in particular to a kind of magnetic core of transformer.
Background technology
The magnetic core of transformator is usually FERRITE CORE, powder body magnetic core etc., in the case of using FERRITE CORE, can be
Arrange the air gap between magnetic core to guarantee DC superposition characteristic.However, the setting of the air gap leads to the increase of flux loss.
On the other hand, in the case of using powder body magnetic core, due to the low permeability of the powder of powder body magnetic core, need to increase twining of coil
Around the number of turn so that copper loss trends towards increasing.In including the composite cores of FERRITE CORE and powder body magnetic core, FERRITE CORE
Saturation flux density changes with temperature so that FERRITE CORE should be preferably by being fixed to radiator by FERRITE CORE
To cool down.In order to cool down powder body magnetic core, need attached heat sinks are installed on powder body magnetic core side, the setting of attached heat sinks makes
The complex structure of transformator.
Content of the invention
It is an object of the invention to provide one kind is while having different pcrmeability, it is possible to increase the transformator magnetic of inductance
Core, and so that magnetic core is more easily manufactured.
The technical scheme is that：A kind of magnetic core of transformer, including turning the first stem stem of shape, turn the second stem stem of shape,
And base, described first stem stem, the second stem stem, the hollow magnetic circuit of base composition closure, described first stem stem is by ferrite
Material is made, and described second stem stem is made up of the permeability material low compared with Ferrite Material, and described closed magnetic circuit includes being formed as
Through the first magnetic-path and second magnetic-path being formed through described second stem stem of described first stem stem, described second magnetic
The length in path is less than the length of described first magnetic-path, and the both sides of described base are provided with radiator.
Described second stem stem is powder body material.
It is provided with air gap between described first stem stem and the second stem stem.
Described radiator is arranged on and is close to the first stem stem and base intersection, and the second stem stem and base intersection.
Described radiator is set to corrugated plate.
The beneficial effects of the present invention is：
This magnetic core of transformer passes through, using having different magnetic conductivity ferrite materials and powder body material is made, both to have may insure magnetic core
DC superposition characteristic, the copper loss of magnetic core can be reduced again；Additionally, the length setting by first stem stem with Ferrite Material
It is more than the second stem stem being made up of the relatively low material of permeability, the inductance of transformator can be improved, also reduce transformation simultaneously
The cost of device.
Brief description
Fig. 1 is the front view of magnetic core of transformer of the present invention.
Fig. 2 is the left view of magnetic core of transformer of the present invention.
Wherein：1st, the first stem stem 2, the second stem stem 3, base 4, radiator 5, air gap.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
A kind of magnetic core of transformer as shown in Figure 1 and Figure 2, including turning the first stem stem 1 of shape, turn the second stem stem 2 of shape, and
Base 3, described first stem stem 1, the second stem stem 2, base 3 constitute the hollow magnetic circuit of closure, and the magnetic flux in this closed magnetic circuit is pressed
According to the first stem stem 1, the second stem stem 2, base 3, the order then returning the first stem stem 1 is run, or reverse order runs；Institute
State the first stem stem 1 to be made up of Ferrite Material, be such as made up of Mn-Zn ferrite or the ferritic Ferrite Material of Ni-Mn, institute
State the second stem stem 2 to be made up of the permeability material low compared with Ferrite Material, such as powder body material, specifically, the second stem stem 2 can
It is made up of the powder body material of Fe-Al-Si powder body, formed and be coated with insulating resin by pressure molding；Described closed magnetic circuit
Including the first magnetic-path being formed through described first stem stem 1 and the second magnetic circuit being formed through described second stem stem 2
Footpath, the length of described second magnetic-path is less than the length of described first magnetic-path, because powder body material is more high than Ferrite Material
Expensive, it is less than the length of the first stem stem 1 made using Ferrite Material in the length of the second stem stem 2 being made up of powder body material,
While improving the inductance of transformator, also make the use of powder body material less, cost can be reduced；Here can also be by
As long as two stem stems 2 are set to I type and ensure that the pcrmeability of the second stem stem 2 is less than the first stem stem 1, and its length is less than first
Stem stem 1；And due to the first stem stem 1, the second stem stem 2 be independent turn shape stem stem, therefore, the structure of each stem stem is letter
Single, enabling it is easy to manufacture.
Base 3 is also made up of Ferrite Material, and the both sides of described base 3 are provided with radiator 4, described magnetic core of transformer
Installation method be first, the first stem stem 1 to be installed on base 3, and it is fixed in the way of being contacted with base 3, so
Afterwards the second stem stem 2 is installed on base 3, and it is fixed in the way of being contacted with base 3, finally at the two ends of base 3
The bracing frame being made up of heat-resisting Heat Conduction Material is installed, the side of base 3 is close to by wherein bracing frame, then installs on bracing frame and dissipate
Hot device 4, described radiator 4 is set to corrugated plate, is to simplify structure it is easy to while this magnetic core manufactures, can expire again
The cooling requirements of sufficient magnetic core, described radiator 4 is close to the first stem stem 1 and base 3 intersection and the second stem stem 2 and bottom
Seat 3 intersection setting, is for more preferable heat conduction；The heat of the first stem stem 1 and the second stem stem 2 generation is transmitted by contact surface
To on bracing frame, and transfer to radiator 4 from bracing frame, conductive structure is simple, easy to manufacture.
Further, magnetic core of the present invention is to prevent it from producing magnetic saturation at work, described first stem stem 1 with
It is additionally provided with air gap 5, the big I of air gap 5 is configured as needed, and meanwhile, the setting of air gap also may be used between second stem stem 2
To avoid exchanging the magnetic saturation phenomenon under big signal or direct current biasing, better control over inductance value；However, reducing magnetic in air gap
Require wire circle more in the case of conductance, related copper loss also increases, so needing according to practical situation, it is suitable to carry out
Compromise.
Above one embodiment of the present of invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example is it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng all should still belong within the patent covering scope of the present invention.
Claims (5)
1. a kind of magnetic core of transformer, including the first stem stem turning shape（1）, turn the second stem stem of shape（2）, and base（3）, described
First stem stem（1）, the second stem stem（2）, base（3）Constitute closure hollow magnetic circuit it is characterised in that：Described first stem stem
（1）It is made up of Ferrite Material, described second stem stem（2）It is made up of the permeability material low compared with Ferrite Material, described closure
Magnetic circuit includes being formed through described first stem stem（1）The first magnetic-path and be formed through described second stem stem（2）'s
Second magnetic-path, the length of described second magnetic-path is less than the length of described first magnetic-path, described base（3）Also by ferrite
Material is made, in described base（3）Both sides be provided with radiator（4）.
2. magnetic core of transformer according to claim 1 it is characterised in that：Described second stem stem（2）For powder body material.
3. magnetic core of transformer according to claim 1 it is characterised in that：Described first stem stem（1）With the second stem stem（2）It
Between be provided with air gap（5）.
4. magnetic core of transformer according to claim 1 it is characterised in that：Described radiator（4）It is arranged on and be close to first
Stem stem（1）With base（3）Intersection, and the second stem stem（2）With base（3）Intersection.
5. magnetic core of transformer according to claim 4 it is characterised in that：Described radiator（4）It is set to corrugated plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128191.5A CN106449043A (en) | 2016-12-09 | 2016-12-09 | Magnetic core of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128191.5A CN106449043A (en) | 2016-12-09 | 2016-12-09 | Magnetic core of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106449043A true CN106449043A (en) | 2017-02-22 |
Family
ID=58216981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611128191.5A Pending CN106449043A (en) | 2016-12-09 | 2016-12-09 | Magnetic core of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106449043A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424771A (en) * | 2017-07-05 | 2017-12-01 | 太仓英达锅炉设备有限公司 | A kind of stability magnetic core of transformer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363939A (en) * | 2000-10-25 | 2002-08-14 | 株式会社东金 | Magnet core with magnetic deflecting body and inductor therewith |
| CN1682327A (en) * | 2002-09-19 | 2005-10-12 | Nec东金株式会社 | Method for manufacturing bonded magnet and method for manufacturing magnetic device having bonded magnet |
| CN1996515A (en) * | 2006-01-06 | 2007-07-11 | 三星电子株式会社 | Magnetic core, and inductor and transformer comprising the same |
| CN102820125A (en) * | 2011-06-06 | 2012-12-12 | 株式会社丰田自动织机 | Magnetic core |
| CN102956344A (en) * | 2012-11-02 | 2013-03-06 | 华为技术有限公司 | Composite magnetic core structure and magnetic element |
| CN203377063U (en) * | 2013-08-09 | 2014-01-01 | 西南应用磁学研究所 | Heat dissipating enhanced type magnetic core |
| JP2014078577A (en) * | 2012-10-10 | 2014-05-01 | Hitachi Metals Ltd | Complex reactor for multi-phase converter and multi-phase converter employing the same |
| CN204614613U (en) * | 2015-04-01 | 2015-09-02 | 杭州中恒电气股份有限公司 | A kind of magnetic composition element |
| CN204651128U (en) * | 2015-05-26 | 2015-09-16 | 东莞市大忠电子有限公司 | A kind of mixed magnetic circuit inductor |
-
2016
- 2016-12-09 CN CN201611128191.5A patent/CN106449043A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363939A (en) * | 2000-10-25 | 2002-08-14 | 株式会社东金 | Magnet core with magnetic deflecting body and inductor therewith |
| CN1682327A (en) * | 2002-09-19 | 2005-10-12 | Nec东金株式会社 | Method for manufacturing bonded magnet and method for manufacturing magnetic device having bonded magnet |
| CN1996515A (en) * | 2006-01-06 | 2007-07-11 | 三星电子株式会社 | Magnetic core, and inductor and transformer comprising the same |
| CN102820125A (en) * | 2011-06-06 | 2012-12-12 | 株式会社丰田自动织机 | Magnetic core |
| JP2014078577A (en) * | 2012-10-10 | 2014-05-01 | Hitachi Metals Ltd | Complex reactor for multi-phase converter and multi-phase converter employing the same |
| CN102956344A (en) * | 2012-11-02 | 2013-03-06 | 华为技术有限公司 | Composite magnetic core structure and magnetic element |
| CN203377063U (en) * | 2013-08-09 | 2014-01-01 | 西南应用磁学研究所 | Heat dissipating enhanced type magnetic core |
| CN204614613U (en) * | 2015-04-01 | 2015-09-02 | 杭州中恒电气股份有限公司 | A kind of magnetic composition element |
| CN204651128U (en) * | 2015-05-26 | 2015-09-16 | 东莞市大忠电子有限公司 | A kind of mixed magnetic circuit inductor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424771A (en) * | 2017-07-05 | 2017-12-01 | 太仓英达锅炉设备有限公司 | A kind of stability magnetic core of transformer |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |