Magnetic element

Abstract

The present disclosure is a magnetic element comprising: a first magnetic core made of a ferrite material; the coil is arranged on the first magnetic core; the second magnetic core is formed by alloy materials in a glue pouring mode and wraps at least part of the coil of the first magnetic core; wherein the magnetic permeability of the first magnetic core is greater than 700.

Description

Technical Field

[0001] The present invention discloses a magnetic element, and more particularly, relates to a magnetic element comprising two magnetic cores, wherein the process materials of the two magnetic cores are different. Background Art

[0002] In recent decades, the global communications business has maintained a growth trend, and the growth rate of communications power supply in developing regions such as the Asia-Pacific region and Africa has continued to accelerate. In order to cope with the rapidly growing data traffic and the emerging business needs, large-scale investment is needed to build communications base stations, telecommunications equipment and widely distributed network infrastructure. In the communication network, the efficiency of the rectifier (Rectifier) ​​in converting AC to DC is particularly important. Improving efficiency helps reduce carbon dioxide emissions and contribute to the protection of the earth.

[0003] The magnetic components inside the rectifier, such as the Power Factor Correction (PFC) inductor, account for about 50% of the overall rectifier efficiency. However, traditional magnetic components are too large and have low inductance, resulting in poor efficiency.

[0004] Therefore, how to develop a magnetic element that overcomes the above-mentioned shortcomings is an urgent need at present. Summary of the invention

[0005] The purpose of the present disclosure is to provide a magnetic element to achieve technical effects such as reducing volume, increasing sensitivity and improving efficiency.

[0006] To achieve the above-mentioned purpose, one embodiment of the present disclosure is a magnetic element, comprising: a first magnetic core made of ferrite material; a coil disposed on the first magnetic core; and a second magnetic core formed by an alloy material by a glue-filling method and covering at least a portion of the coil of the first magnetic core; wherein the magnetic permeability of the first magnetic core is greater than 700. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of a magnetic element in a preferred embodiment of the present disclosure;

[0008] Figure 2 for Figure 1 A schematic structural diagram of a first magnetic core of a magnetic element shown;

[0009] Figure 3 for Figure 1 A schematic structural diagram of the first magnetic core and coil of the magnetic element shown.

[0010] Description of reference numerals:

[0011] 1: Magnetic components

[0012] 2: First core

[0013] 3: Coil

[0014] 4: Second core

[0015] 20: Winding part

[0016] 21: Base

[0017] 210: Top

[0018] 211: Bottom DETAILED DESCRIPTION

[0019] Some typical embodiments that embody the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can have various changes in different implementations without departing from the scope of the present disclosure, and the descriptions and drawings therein are essentially used for illustrative purposes rather than for limiting the present disclosure.

[0020] See also Figure 1 , Figure 2 and Figure 3 ,in Figure 1 is a schematic diagram of the structure of a magnetic element in a preferred embodiment of the present disclosure, Figure 2 for Figure 1 A schematic structural diagram of a first magnetic core of a magnetic element shown in FIG. Figure 3 for Figure 1 The schematic diagram of the structure of the first magnetic core and the coil of the magnetic element shown in FIG. Figures 1 to 3 As shown, the magnetic element 1 of the present disclosure can be used as an inductor, such as a power factor correction inductor inside a rectifier, but is not limited thereto. The magnetic element 1 includes a first magnetic core 2 , a coil 3 and a second magnetic core 4 .

[0021] The first magnetic core 2 is made of ferrite material, and the magnetic permeability of the first magnetic core 2 is greater than 700. The coil 3 is disposed on the first magnetic core 2. The second magnetic core 4 is formed by an alloy material by a glue injection method, and the shape can be, for example, a rectangle, but not limited thereto, and the second magnetic core 4 covers at least a portion of the first magnetic core 2 and the coil 3.

[0022] As can be seen from the above, since the first magnetic core 2 of the present invention is made of ferrite material, and the second magnetic core 4 is formed by alloy material in a glue-filled manner, and the magnetic permeability of the first magnetic core 2 is greater than 700, the number of turns of the coil 3 of the magnetic element 1 can be reduced under the same inductance, so that the volume of the magnetic element 1 is reduced by, for example, 20% compared to the traditional magnetic element. In addition, the inductance of the magnetic element 1 of the present invention can also be improved compared to the traditional magnetic element, for example, to 600u Henry. Since the second magnetic core 4 is formed by glue-filled manner, the shape of the second magnetic core 4 can be adjusted according to the actual product requirements, so that the versatility is improved.

[0023] In some embodiments, the first magnetic core 2 includes a winding portion 20 and a base 21. The coil 3 is wound on the winding portion 20, and the winding portion 20 can be formed integrally with the base 21. Furthermore, the winding portion 20 can be a cylindrical structure, but it is not limited thereto, and can have different structural shapes according to actual needs. The base 21 can be, but is not limited to, a rectangular structure, and has a top surface 210 and a bottom surface 211 that are relatively arranged, wherein the winding portion 20 is convexly arranged on the top surface 210 of the base 21, and in addition to covering the coil 3, the second magnetic core 4 also covers the top surface 210 and the winding portion 20. Of course, in other embodiments, in addition to covering the coil 3, the top surface 210 and the winding portion 20, the second magnetic core 4 can also cover the bottom surface 211.

[0024] In some embodiments, the coil 3 is an air coil, so it can be automatically wound on the winding part 20 of the first magnetic core 2. Therefore, compared with the traditional magnetic element that needs to be manually wound, the magnetic element 1 of the present invention can be automatically wound, thereby improving the winding quality of the coil 3 and improving the inductance while the quality of the inductance is stable. In some embodiments, the coil 3 can be composed of copper wire. After being wound on the winding part 20, the outlet end of the coil 3 can be led out from the side of the base 21, and then the second magnetic core 4 is formed by an alloy material by a glue injection method to cover at least a portion of the first magnetic core 2 and the coil 3. In addition, the magnetic element 1 can be a high-frequency design, such as a 300KHz high-frequency design, and the corresponding magnetic element 1 is a high-frequency design, so in some embodiments, the coil 3 can be replaced by a printed wiring board (Printed Wiring Board: PWB).

[0025] In some embodiments, the magnetic permeability of the second magnetic core 4 may be lower than 125. In addition, the alloy material of the second magnetic core 4 does not contain any plastic component. In other words, the alloy material is composed of metal, such as iron powder, and plastic.

[0026] In summary, the present disclosure provides a magnetic element, wherein since the first magnetic core is made of ferrite material, the second magnetic core is formed of alloy material by glue injection, and the magnetic permeability of the first magnetic core is greater than 700, the volume of the magnetic element is reduced by, for example, 20%, and the inductance of the magnetic element reaches 600u Henry. Since the second magnetic core is formed by glue injection, the shape of the second magnetic core can be adjusted according to actual product requirements, thereby improving the versatility of the magnetic element.

Claims

1. A magnetic element, comprising: a first magnetic core made of ferrite material; a coil disposed on the first magnetic core; and A second magnetic core, formed of an alloy material by a glue-filling method, and covering at least a portion of the first magnetic core and the coil; The magnetic permeability of the first magnetic core is greater than 700. 2 . The magnetic element as claimed in claim 1 , wherein the magnetic permeability of the second magnetic core is lower than 125. 3 . The magnetic element as claimed in claim 1 , wherein the alloy material of the second magnetic core does not contain any plastic component. The magnetic element as claimed in claim 3 , wherein the alloy material is composed of metal and glue. 5 . The magnetic element as claimed in claim 1 , wherein the first magnetic core comprises a winding portion and a base, the winding portion is protruding from the base, and the winding portion and the base are integrally formed, and the coil is wound around the winding portion. 6 . The magnetic element as claimed in claim 5 , wherein the base has a top surface and a bottom surface arranged opposite to each other, wherein the winding portion is protruded on the top surface, and the second magnetic core covers the coil, the top surface and the winding portion. The magnetic element as claimed in claim 1 , wherein the coil is formed of a copper wire.

8. The magnetic element as claimed in claim 1, wherein the magnetic element is designed for a high frequency of 300 KHz, and the coil is formed by a printed circuit board.

9. The magnetic element as claimed in claim 1, wherein the magnetic element is an inductor.

10. The magnetic element as claimed in claim 1, wherein the inductance of the magnetic element reaches 600u Henry.

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