CN216133748U - Soft magnetic structure for realizing gradual saturation - Google Patents
Soft magnetic structure for realizing gradual saturation Download PDFInfo
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- CN216133748U CN216133748U CN202121247464.4U CN202121247464U CN216133748U CN 216133748 U CN216133748 U CN 216133748U CN 202121247464 U CN202121247464 U CN 202121247464U CN 216133748 U CN216133748 U CN 216133748U
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Abstract
The utility model discloses a soft magnetic structure for realizing gradual saturation, which comprises a soft magnetic core and a winding coil, wherein the soft magnetic core is provided with a magnetic core; the soft magnetic core comprises an upper part and a lower part, wherein the upper part and the lower part are of symmetrical structures, the upper part and the lower part are connected at a contact point, and the coils are wound on two side edges of the soft magnetic core. The utility model has the advantages that: anti-saturation is achieved without a unique air gap. Saturation is started from the position of the magnetic core with high magnetic permeability, the partially saturated magnetic core serves as an air gap, and the center is further saturated gradually to achieve larger anti-saturation characteristics. The method realizes no local air gap, thus greatly reducing the influence of loss increase, EMI and magnetic radiation caused by magnetic leakage.
Description
Technical Field
The utility model relates to a soft magnetic structure, in particular to a soft magnetic structure for realizing gradual saturation.
Background
Many soft magnetic cores are currently made into inductors, and air gaps are needed. In order to resist saturation, the air gap needs to be larger, and when the air gap is increased, the magnetic leakage is larger.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a soft magnetic structure that achieves gradual saturation.
The utility model adopts the following technical scheme: a soft magnetic structure for realizing gradual saturation comprises a soft magnetic core and a winding coil; the soft magnetic core comprises an upper part and a lower part, wherein the upper part and the lower part are of symmetrical structures, the upper part and the lower part are connected at a contact point, and the coils are wound on two side edges of the soft magnetic core.
The end face is a triangular cone, an isosceles trapezoid, a semi-sphere or a rounded edge.
The contact points are butt joints with sharp corners or air gaps between two end faces or cylinders or cuboids connecting the two end faces.
The number of the winding coils is set according to requirements.
The utility model has the advantages that: anti-saturation is achieved without a unique air gap. Saturation is started from the position of the magnetic core with high magnetic permeability, the partially saturated magnetic core serves as an air gap, and the center is further saturated gradually to achieve larger anti-saturation characteristics. The method realizes no local air gap, thus greatly reducing the influence of loss increase, EMI and magnetic radiation caused by magnetic leakage.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Fig. 2 is a schematic structural view of embodiment 2.
Fig. 3 is a schematic structural view of embodiment 3.
Fig. 4 is a schematic structural view of embodiment 4.
FIG. 5 is a schematic structural view of example 5.
Fig. 6 is a schematic structural view of embodiment 6.
The reference numbers indicate 1 magnetic core, 2 contact points, 3 winding coil, 4 end points and 5 arc end faces.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
Example 1
A soft magnetic structure for realizing gradual saturation comprises a soft magnetic core 1, a winding coil 3; the soft magnetic core 1 includes an upper portion and a lower portion, the upper portion and the lower portion are of a symmetrical structure, the upper portion and the lower portion are connected at a contact point 2, and a winding coil 3 is wound on two side edges of the soft magnetic core 1.
The magnetic end faces of the upper part and the lower part are conical, and the upper conical sharp angle and the lower conical sharp angle are opposite and mutually contacted.
The magnetic core 1 is gradually saturated from the end point 4 of the magnetic core 1 to the sharp corner, and the partially saturated magnetic core 1 acts as an air gap to reduce magnetic leakage.
Example 2
A soft magnetic structure for realizing gradual saturation comprises a soft magnetic core 1, a winding coil 3; the soft magnetic core 1 includes an upper portion and a lower portion, the upper portion and the lower portion are of a symmetrical structure, the upper portion and the lower portion are connected at a contact point 2, and a winding coil 3 is wound on two side edges of the soft magnetic core 1.
The magnetic end faces of the upper part and the lower part are isosceles trapezoids, the short sides of the two isosceles trapezoids face each other, and an air gap is reserved between the two isosceles trapezoids.
The part from the end point 4 of the magnetic core 1 to the middle air gap is gradually saturated, and the partially saturated magnetic core 1 acts as the air gap to reduce the magnetic leakage.
Example 3
A soft magnetic structure for realizing gradual saturation comprises a soft magnetic core 1, a winding coil 3; the soft magnetic core 1 includes an upper portion and a lower portion, the upper portion and the lower portion are of a symmetrical structure, the upper portion and the lower portion are connected at a contact point 2, and a winding coil 3 is wound on two side edges of the soft magnetic core 1.
The edges of the magnetic end faces of the upper part and the lower part are fillets, and the two end faces are connected through a cylinder.
The magnetic core 1 is gradually saturated from the end point 4 of the magnetic core 1 to the middle cylinder, and the partially saturated magnetic core 1 acts as an air gap to reduce magnetic leakage.
Example 4
A soft magnetic structure for realizing gradual saturation comprises a soft magnetic core 1, a winding coil 3; the soft magnetic core 1 includes an upper portion and a lower portion, the upper portion and the lower portion are of a symmetrical structure, the upper portion and the lower portion are connected at a contact point 2, and a winding coil 3 is wound on two side edges of the soft magnetic core 1.
The magnetic end faces of the upper part and the lower part are two isosceles trapezoids, and the two isosceles trapezoids are connected through a cylinder.
The cylinder is ferrite or amorphous or nanocrystalline with magnetic conductivity more than 1000.
Gradually saturation is realized by slowly approaching the middle cylinder from the end point 4 of the magnetic core 1, and the partially saturated magnetic core 1 serves as an air gap to reduce magnetic leakage.
Example 5
A soft magnetic structure for realizing gradual saturation comprises a soft magnetic core 1, a winding coil 3; the soft magnetic core 1 includes an upper portion and a lower portion, the upper portion and the lower portion are of a symmetrical structure, the upper portion and the lower portion are connected at a contact point 2, and a winding coil 3 is wound on two side edges of the soft magnetic core 1.
The magnetic end faces of the upper part and the lower part are two hemispheres, and a local gap is formed between the two hemispheres in a point contact mode or is left.
Gradually saturation is realized by slowly approaching the middle air gap from the end point 4 of the magnetic core 1 to the arc-shaped end face 5, and the partially saturated magnetic core 1 serves as the air gap to reduce magnetic leakage.
Example 6
A soft magnetic structure for realizing gradual saturation comprises a soft magnetic core 1, a winding coil 3; the soft magnetic core 1 includes an upper portion and a lower portion, the upper portion and the lower portion are of a symmetrical structure, the upper portion and the lower portion are connected at a contact point 2, and a winding coil 3 is wound on two side edges of the soft magnetic core 1.
The edges of the magnetic end faces of the upper part and the lower part are fillets, and a certain gap is reserved between the end faces.
The cylinder is ferrite or amorphous or nanocrystalline with magnetic conductivity more than 1000.
Gradually saturation is realized by slowly approaching the middle air gap from the end point 4 of the magnetic core 1 to the arc-shaped end face 5, and the partially saturated magnetic core 1 serves as the air gap to reduce magnetic leakage.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (3)
1. A soft magnetic structure for achieving gradual saturation, comprising a soft magnetic core (1), a winding coil (3); the soft magnetic core (1) comprises an upper part and a lower part, the upper part and the lower part are of symmetrical structures, the upper part and the lower part are connected at a contact point (2), and the winding coil (3) is wound on two side edges of the soft magnetic core (1).
2. A soft-magnetic structure implementing gradual saturation according to claim 1, characterized in that said contact points (2) are butt-joints of sharp corners or air gaps between two end faces (5) or cylinders or cuboids connecting two end faces (5).
3. A soft-magnetic structure for achieving gradual saturation according to claim 1, characterized in that the end points (4) are starting points of gradual decrease of the end surfaces (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121247464.4U CN216133748U (en) | 2021-06-04 | 2021-06-04 | Soft magnetic structure for realizing gradual saturation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121247464.4U CN216133748U (en) | 2021-06-04 | 2021-06-04 | Soft magnetic structure for realizing gradual saturation |
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| CN216133748U true CN216133748U (en) | 2022-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114997012A (en) * | 2022-06-14 | 2022-09-02 | 福州大学 | Ferrite magnetic field optimization device and method based on genetic algorithm |
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2021
- 2021-06-04 CN CN202121247464.4U patent/CN216133748U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114997012A (en) * | 2022-06-14 | 2022-09-02 | 福州大学 | Ferrite magnetic field optimization device and method based on genetic algorithm |
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Address after: 518000 1301, Building B, Zhigu R&D Building, Shuguang Community, Xili Street, Nanshan District, Shenzhen, Guangdong Province Patentee after: POCO HOLDING Co.,Ltd. Patentee after: SHENZHEN POCO MAGNETIC Co.,Ltd. Patentee after: HUIZHOU BOKE INDUSTRY Co.,Ltd. Address before: 518000 Room 301-306, Two Buildings, Three Rooms, Fifth Industrial Zone, Nanshan District, Shenzhen City, Guangdong Province Patentee before: POCO HOLDING Co.,Ltd. Patentee before: SHENZHEN POCO MAGNETIC Co.,Ltd. Patentee before: HUIZHOU BOKE INDUSTRY Co.,Ltd. |
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