Magnetic assembly

Abstract

The present disclosure relates to a magnetic assembly. The magnetic assembly comprises a magnetic core, at least two windings, and a magnetic covering portion. The magnetic core comprises a magnetic core body and a hollow portion, and the hollow portion penetrates the magnetic core body. The at least two windings are separately wound around the magnetic core body, each winding is at least partially penetratingly arranged in the hollow portion, and at least part of the two windings is located between at least part of the magnetic covering portion and the other part of the magnetic covering portion.

Description

Magnetic components Technical Field

[0001] The present disclosure relates to the field of power electronics, and in particular to a magnetic component. Background Art

[0002] Currently, the filter circuit within a power supply is used to suppress electromagnetic interference (EMI) generated during switch switching. The filter circuit comprises two-stage filter modules: a first-stage filter module comprising a common-mode inductor (i.e., a common-mode magnetic component) and an X-capacitor, and a second-stage filter module comprising a differential-mode inductor (i.e., a differential-mode magnetic component) and a Y-capacitor. Both filter modules are mounted on a main circuit board. The filter circuit utilizes the differential-mode inductor to suppress differential-mode EMI noise. However, the filter circuit's two-stage architecture, including two magnetic components, results in a larger size and a higher number of components. This results in a larger overall size for the power supply, making it difficult to miniaturize.

[0003] Therefore, developing a magnetic component that overcomes the above-mentioned shortcomings is an urgent need.

[0004] Summary of the Invention

[0005] The purpose of the present disclosure is to provide a magnetic component, wherein the first winding and the second winding are located between a portion of the magnetic covering portion and another portion of the magnetic covering portion, so that the magnetic component utilizes the arrangement of the magnetic covering portion to improve leakage inductance and impedance in high-frequency applications, and achieves the function of suppressing differential mode noise. The magnetic component of the present disclosure is a single component, which makes it smaller in size and has fewer components, so that the power supply using the magnetic component of the present disclosure is also smaller in size, which makes it easier to achieve miniaturization and increase power density, while also improving power supply efficiency. In addition, the magnetic component of the present disclosure can utilize a method of reducing the number of soft magnetic sheets so that it only covers two sides of the magnetic core body, so that the coating method formed by the soft magnetic sheets of the magnetic component of the present disclosure is an open structure, so that the heat dissipation capacity of the magnetic component is optimized, thereby reducing the overall temperature of the power supply using the magnetic component.

[0006] To achieve the above objectives, one embodiment of the present disclosure provides a magnetic assembly comprising a magnetic core, at least two sets of windings, and a magnetic covering. The magnetic core comprises a core body and a hollow portion, the hollow portion extending through the core body. At least two sets of windings are respectively wound around the core body, with each winding at least partially extending through the hollow portion. At least portions of the at least two sets of windings are located between at least a portion of the magnetic covering and another portion of the magnetic covering. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG1A is a schematic structural diagram of a magnetic assembly according to a first embodiment of the present disclosure;

[0008] FIG1B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG1A ;

[0009] FIG2A is a schematic structural diagram of a magnetic assembly according to a second embodiment of the present disclosure;

[0010] FIG2B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG2A ;

[0011] FIG3A is a schematic structural diagram of a magnetic assembly according to a third embodiment of the present disclosure;

[0012] FIG3B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG3A ;

[0013] FIG4A is a schematic structural diagram of a magnetic assembly according to a fourth embodiment of the present disclosure;

[0014] FIG4B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG4A ;

[0015] FIG5A is a schematic structural diagram of a magnetic assembly according to a fifth embodiment of the present disclosure;

[0016] FIG5B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG5A ;

[0017] FIG6A is a schematic structural diagram of a magnetic assembly according to a sixth embodiment of the present disclosure;

[0018] FIG6B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG6A ;

[0019] FIG7A is a schematic structural diagram of a magnetic assembly according to a seventh embodiment of the present disclosure;

[0020] FIG7B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG7A ;

[0021] FIG8A is a schematic structural diagram of a magnetic assembly according to an eighth embodiment of the present disclosure;

[0022] FIG8B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG8A ;

[0023] FIG9 is a schematic diagram of an exploded structure of a magnetic assembly according to a ninth embodiment of the present disclosure;

[0024] FIG10A is a schematic structural diagram of a magnetic assembly according to a tenth embodiment of the present disclosure;

[0025] FIG10B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG10A ;

[0026] FIG11A is a schematic structural diagram of a magnetic assembly according to an eleventh embodiment of the present disclosure;

[0027] FIG11B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG11A ;

[0028] FIG12A is a schematic structural diagram of a magnetic assembly according to a twelfth embodiment of the present disclosure;

[0029] FIG12B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG12A;

[0030] FIG13A is a schematic structural diagram of a magnetic assembly according to a thirteenth embodiment of the present disclosure;

[0031] FIG13B is a schematic diagram of the exploded structure of the magnetic assembly shown in FIG13A;

[0032] FIG14A is a voltage-frequency waveform diagram of a conventional magnetic component; and

[0033] FIG14B is a voltage-frequency waveform diagram of the magnetic assembly of the present disclosure.

[0034] Description of reference numerals:

[0035] 1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1k, 1m: Magnetic components

[0036] 2: Magnetic core

[0037] 21: Magnetic core body

[0038] 211: First side column

[0039] 212: Second side column

[0040] 213: First connecting column

[0041] 214: Second connecting column

[0042] 21a: Outer annulus

[0043] 21b: Inner annulus

[0044] 21c: First side

[0045] 21d: Second side

[0046] 22: Hollow part

[0047] 23: Gap

[0048] 3: First winding

[0049] 4: Second winding

[0050] 5: Magnetic covering

[0051] 51: The first soft magnetic sheet

[0052] 52: Second soft magnetic sheet

[0053] 53: The third soft magnetic sheet

[0054] 54: The fourth soft magnetic sheet

[0055] 55: First covering element

[0056] 56: Second covering element

[0057] 57: Opening

[0058] 6: Fixed part

[0059] 71: First interval

[0060] 72: Second interval

[0061] 8: Magnetic disk

[0062] 81: Partition

[0063] 82: Protrusion

[0064] 9: Base

[0065] 91: Baseboard

[0066] 92: Positioning element

[0067] 93: First positioning groove

[0068] 94: Second positioning slot DETAILED DESCRIPTION

[0069] 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 is capable of various variations in different implementations without departing from the scope of the present disclosure, and the descriptions and drawings are intended to be illustrative rather than limiting of the present disclosure.

[0070] Please refer to Figures 1A and 1B, wherein Figure 1A is a schematic structural diagram of the magnetic component of the first embodiment of the present disclosure, and Figure 1B is an exploded structural diagram of the magnetic component shown in Figure 1A. As shown in the figure, the magnetic component 1 of this embodiment includes a magnetic core 2, a first winding 3, a second winding 4, and a magnetic covering portion 5. The magnetic core 2 includes a magnetic core body 21 and a hollow portion 22. As shown in Figure 1B, the magnetic core body 21 of this embodiment is a hollow rectangular body and includes a first side column 211, a second side column 212, a first connecting column 213, and a second connecting column 214. The first side column 211 and the second side column 212 are arranged opposite to each other, and the first connecting column 213 and the second connecting column 214 are arranged opposite to each other, wherein the first connecting column 213 is connected between the first end of the first side column 211 and the first end of the second side column 212, and the second connecting column 214 is connected between the second end of the first side column 211 and the second end of the second side column 212. The hollow portion 22 passes through the core body 21 , for example, passes through the center of the core body 21 , and is located between the first side column 211 and the second side column 212 , and between the first connecting column 213 and the second connecting column 214 .

[0071] The first winding 3 wraps around a portion of the magnetic core body 21, for example, around the first side leg 211 of the magnetic core body 21, and a portion of the first winding 3 passes through the hollow portion 22 and is located on one side of the magnetic core body 21. The second winding 4 wraps around another portion of the magnetic core body 21, for example, around the second side leg 212 of the magnetic core body 21, and a portion of the second winding 4 passes through the hollow portion 22 and is located on the other side of the magnetic core body 21. In this embodiment, a gap 23 is defined between the first winding 3 and the second winding 4 located in the hollow portion 22.

[0072] The magnetic covering portion 5 may be, but is not limited to, a flexible soft magnetic sheet or magnetic tape, having a thickness of less than 1.5 mm and made of an insulating material. In this embodiment, the magnetic covering portion 5 includes a first soft magnetic sheet 51, a second soft magnetic sheet 52, a third soft magnetic sheet 53, and a fourth soft magnetic sheet 54. The first soft magnetic sheet 51 and the second soft magnetic sheet 52 are disposed opposite each other, and the third soft magnetic sheet 53 and the fourth soft magnetic sheet 54 are disposed opposite each other and located between the first soft magnetic sheet 51 and the second soft magnetic sheet 52. The first soft magnetic sheet 51, the second soft magnetic sheet 52, the third soft magnetic sheet 53, and the fourth soft magnetic sheet 54 are integrally formed. The first soft magnetic sheet 51, the third soft magnetic sheet 53, the second soft magnetic sheet 52 and the fourth soft magnetic sheet 54 of the magnetic covering part 5 are covered and attached to the first winding 3 and the second winding 4, and surround the first side column 211 and the second side column 212 of the magnetic core body 21, wherein the first winding 3 is located between the first side column 211 of the magnetic core body 21 and the first soft magnetic sheet 51 of the magnetic covering part 5, between the first side column 211 of the magnetic core body 21 and the second soft magnetic sheet 52 of the magnetic covering part 5, and between the first side column 211 of the magnetic core body 21 and the third soft magnetic sheet 53 of the magnetic covering part 5, and the second winding 4 is located between the second side column 212 of the magnetic core body 21 and the first soft magnetic sheet 51 of the magnetic covering part 5, between the second side column 212 of the magnetic core body 21 and the second soft magnetic sheet 52 of the magnetic covering part 5, and between the second side column 212 of the magnetic core body 21 and the fourth soft magnetic sheet 54 of the magnetic covering part 5. In this embodiment, the first winding 3 is located between the third soft magnetic sheet 53 of the magnetic covering portion 5 and the second winding 4, and the second winding 4 is located between the fourth soft magnetic sheet 54 of the magnetic covering portion 5 and the first winding 3. In this embodiment, the first soft magnetic sheet 51, the second soft magnetic sheet 52, the third soft magnetic sheet 53, and the fourth soft magnetic sheet 54 of the magnetic covering portion 5 are not inserted into the hollow portion 22, and the gap 23 between the first winding 3 and the second winding 4 is not inserted into the gap 23. In this embodiment, the magnetic permeability, the number of internal structure layers, the cross-sectional area, and the number of turns of the magnetic covering portion 5 are correlated with the leakage inductance of the magnetic component 1. The magnetic component 1 can adjust the overall leakage inductance of the magnetic component 1 by changing the magnetic permeability, the number of internal structure layers, the cross-sectional area, and the number of turns of the magnetic covering portion 5. In one embodiment, the magnetic component 1 includes a fixing bracket (not shown) for fixing the magnetic core 2. For example, the second connecting column 214 of the magnetic core body 21 of the magnetic core 2 is disposed on the fixing bracket so that the magnetic core 2 can be fixed to the fixing bracket.

[0073] As can be seen from the above, the first winding 3 and the second winding 4 of the magnetic component 1 of the present invention are located between a portion of the magnetic covering portion 5 and another portion of the magnetic covering portion 5, so that the magnetic component 1 utilizes the setting of the magnetic covering portion 5 to improve the leakage inductance and the impedance during high-frequency applications, and achieves the function of suppressing differential-mode noise. Compared with the traditional filter circuit that uses two magnetic components (a common-mode magnetic component and a differential-mode magnetic component) to achieve the function of suppressing differential-mode noise, the magnetic component 1 of the present invention is a single component, which makes its volume smaller and the number of components smaller, so that the power supply using the magnetic component 1 of the present invention is also smaller, which makes it easier to achieve miniaturization and increase power density, while improving power efficiency.

[0074] In some embodiments, the manner in which the magnetic covering portion 5 covers the first winding 3 and the second winding 4 can be adjusted. Please refer to Figures 2A and 2B, wherein Figure 2A is a structural schematic diagram of the magnetic component of the second embodiment of the present disclosure, and Figure 2B is an exploded structural schematic diagram of the magnetic component shown in Figure 2A. As shown in the figure, compared to the magnetic component 1 shown in Figures 1A and 1B, the third soft magnetic sheet 53, the first soft magnetic sheet 51, the fourth soft magnetic sheet 54 and the second soft magnetic sheet 52 of the magnetic covering portion 5 of the magnetic component 1a of this embodiment surround the first side column 211, the first connecting column 213, the second side column 212 and the second connecting column 214, wherein the first winding 3 is located between the first side column 211 of the magnetic core body 21 and the third soft magnetic sheet 53 of the magnetic covering portion 5, and the second winding 4 is located between the second side column 212 of the magnetic core body 21 and the fourth soft magnetic sheet 54 of the magnetic covering portion 5. In this embodiment, the first winding 3 is located between the third soft magnetic sheet 53 of the magnetic covering portion 5 and the second winding 4 , and the second winding 4 is located between the fourth soft magnetic sheet 54 of the magnetic covering portion 5 and the first winding 3 .

[0075] Please refer to Figures 3A and 3B, wherein Figure 3A is a schematic structural diagram of the magnetic component of the third embodiment of the present disclosure, and Figure 3B is an exploded structural diagram of the magnetic component shown in Figure 3A. As shown in the figure, compared with the magnetic component 1 shown in Figures 1A and 1B, the first soft magnetic sheet 51, the third soft magnetic sheet 53, the second soft magnetic sheet 52 and the fourth soft magnetic sheet 54 of the magnetic covering portion 5 of the magnetic component 1b of this embodiment surround the first connecting column 213 and the second connecting column 214, wherein the first winding 3 is located between the first side column 211 of the magnetic core body 21 and the first soft magnetic sheet 51 of the magnetic covering portion 5 and between the first side column 211 of the magnetic core body 21 and the second soft magnetic sheet 52 of the magnetic covering portion 5, and the second winding 4 is located between the second side column 212 of the magnetic core body 21 and the first soft magnetic sheet 51 of the magnetic covering portion 5 and between the second side column 212 of the magnetic core body 21 and the second soft magnetic sheet 52 of the magnetic covering portion 5. In this embodiment, the first winding 3 and the second winding 4 are respectively located between the third soft magnetic sheet 53 and the fourth soft magnetic sheet 54 of the magnetic covering portion 5 .

[0076] Please refer to Figures 4A and 4B , where Figure 4A is a schematic structural diagram of a magnetic assembly according to a fourth embodiment of the present disclosure, and Figure 4B is an exploded structural diagram of the magnetic assembly shown in Figure 4A . As shown, compared to the magnetic assembly 1 shown in Figures 1A and 1B , the magnetic covering portion 5 of the magnetic assembly 1c of this embodiment includes a first covering element 55 and a second covering element 56 . The first covering element 55 surrounds the first side leg 211 of the magnetic core body 21 , and the first winding 3 is located between the first side leg 211 of the magnetic core body 21 and the first covering element 55 of the magnetic covering portion 5 . The second covering element 56 surrounds the second side leg 212 of the magnetic core body 21 , and the second winding 4 is located between the second side leg 212 of the magnetic core body 21 and the second covering element 56 of the magnetic covering portion 5 . In this embodiment, at least a portion of the first covering element 55 and at least a portion of the second covering element 56 are respectively disposed through the hollow portion 22 and through the gap 23 between the first winding 3 and the second winding 4 .

[0077] Please refer to Figures 5A and 5B , where Figure 5A is a schematic structural diagram of a magnetic assembly according to a fifth embodiment of the present disclosure, and Figure 5B is an exploded structural diagram of the magnetic assembly shown in Figure 5A . As shown in the figures, compared to the hollow rectangular body 21 of the magnetic core 2 of the magnetic assembly 1 shown in Figures 1A and 1B , the magnetic core 2 of the magnetic assembly 1d of this embodiment has a circular ring-shaped body. The first winding 3 is wrapped around a portion of the magnetic core body 21, and a portion of the first winding 3 is passed through the hollow portion 22. The second winding 4 is wrapped around another portion of the magnetic core body 21, and a portion of the second winding 4 is passed through the hollow portion 22. The first winding 3 and the second winding 4 are located on opposite sides of the magnetic core body 21 of the magnetic core 2 without contacting each other, wherein the first end 31 of the first winding 3 is located on the first side of the magnetic core body 21, the first end 41 of the second winding 4 is located on the first side of the magnetic core body 21, and a first gap 71 is provided between the first end 31 of the first winding 3 and the first end 41 of the second winding 4. The second end 32 of the first winding 3 is located on the second side of the magnetic core body 21, and the second end 42 of the second winding 4 is located on the second side of the magnetic core body 21. A second gap 72 is provided between the second end 32 of the first winding 3 and the second end 42 of the second winding 4.

[0078] In this embodiment, the core body 21 of the magnetic core 2 includes an outer annular surface 21a, an inner annular surface 21b, a first side surface 21c, and a second side surface 21d. The outer annular surface 21a surrounds the inner annular surface 21b, and the space surrounded by the inner annular surface 21b forms a hollow portion 22. The first side surface 21c and the second side surface 21d are disposed opposite each other and connected between the outer annular surface 21a and the inner annular surface 21b, respectively. The first soft magnetic sheet 51, the third soft magnetic sheet 53, the second soft magnetic sheet 52, and the fourth soft magnetic sheet 54 of the magnetic cover 5 surround portions of the outer annular surface 21a, the first side surface 21c, and the second side surface 21d of the core body 21. In this embodiment, the first spacer 71 and the second spacer 72 are exposed to the outside of the magnetic component 1d through two openings 57 located on either side of the magnetic cover 5.

[0079] In some embodiments, the manner in which the magnetic covering portion 5 covers the first winding 3 and the second winding 4 can be adjusted. Please refer to Figures 6A and 6B , wherein Figure 6A is a schematic structural diagram of the magnetic assembly of the sixth embodiment of the present disclosure, and Figure 6B is an exploded structural diagram of the magnetic assembly shown in Figure 6A . As shown in the figures, compared to the magnetic assembly 1d shown in Figures 5A and 5B , the first gap 71 and the second gap 72 of the magnetic assembly 1e of this embodiment are covered by the magnetic covering portion 5 and are not exposed to the outside of the magnetic assembly 1d, while the first winding 3 and the second winding 4 are exposed to the outside of the magnetic assembly 1e through two openings 57 on both sides of the magnetic covering portion 5, respectively.

[0080] Please refer to Figures 7A and 7B, wherein Figure 7A is a schematic structural diagram of the magnetic assembly of the seventh embodiment of the present disclosure, and Figure 7B is a schematic exploded structural diagram of the magnetic assembly shown in Figure 7A. As shown in the figure, compared to the magnetic assembly 1d shown in Figures 5A and 5B, the first soft magnetic sheet 51, the third soft magnetic sheet 53, the second soft magnetic sheet 52, and the fourth soft magnetic sheet 54 of the magnetic covering portion 5 of the magnetic assembly 1f of this embodiment surround the outer annular surface 21a of the magnetic core body 21, wherein part of the first winding 3 is located between the outer annular surface 21a of the magnetic core body 21 and the first soft magnetic sheet 51 of the magnetic covering portion 5, and part of the second winding 4 is located between the outer annular surface 21a of the magnetic core body 21 and the second soft magnetic sheet 52 of the magnetic covering portion 5. In addition, in this embodiment, the first winding 3 is located between the first soft magnetic sheet 51 and the second winding 4 of the magnetic covering portion 5, and the second winding 4 is located between the second soft magnetic sheet 52 and the first winding 3 of the magnetic covering portion 5.

[0081] Please refer to Figures 8A and 8B, wherein Figure 8A is a schematic structural diagram of the magnetic component of the eighth embodiment of the present disclosure, and Figure 8B is a schematic exploded structural diagram of the magnetic component shown in Figure 8A. As shown in the figure, compared with the magnetic component 1d shown in Figures 5A and 5B, the magnetic covering portion 5 of the magnetic component 1g of this embodiment includes a first covering element 55 and a second covering element 56. The first covering element 55 surrounds the first winding 3, and the first winding 3 is located between the magnetic core body 21 and the first covering element 55 of the magnetic covering portion 5. The second covering element 56 surrounds the second winding 4, and the second winding 4 is located between the magnetic core body 21 and the second covering element 56 of the magnetic covering portion 5. In this embodiment, at least part of the first covering element 55 and at least part of the second covering element 56 are provided through the hollow portion 22.

[0082] Please refer to Figure 9, which is a schematic diagram of the exploded structure of the magnetic assembly of the ninth embodiment of the present disclosure. As shown in the figure, compared to the magnetic assembly 1e shown in Figures 6A and 6B, the magnetic assembly 1h of this embodiment further includes a magnetic sheet 8 and a base 9. The magnetic sheet 8 is disposed in the hollow portion 22 of the magnetic core 2 and includes a partition 81 and a protrusion 82. The partition 81 extends in a direction from the first gap 71 to the second gap 72. The protrusion 82 is formed by the surface of the partition 81 extending in a direction perpendicular to the partition 81. The base 9 includes a bottom plate 91 and a plurality of positioning elements 92, wherein the plurality of positioning elements 92 extend from the surface of the bottom plate 91 in a direction perpendicular to the bottom plate 91, and the plurality of positioning elements 92 jointly define a first positioning groove 93 and a second positioning groove 94, wherein the first positioning groove 93 matches the partition 81 of the magnetic piece 8, and the second positioning groove 94 matches the protrusion 82 of the magnetic piece 8, wherein the partition 81 of the magnetic piece 8 is arranged in the first positioning groove 93, and the protrusion 82 of the magnetic piece 8 is arranged in the second positioning groove 94, and the magnetic piece 8 is tightly fitted between the plurality of positioning elements 92 using the partition 81 and the protrusion 82 to be connected to the base 9.

[0083] In some embodiments, in order to improve the heat dissipation capacity, the number of soft magnetic sheets in the magnetic covering portion can be adjusted. Please refer to Figures 10A and 10B, wherein Figure 10A is a structural schematic diagram of the magnetic component of the tenth embodiment of the present disclosure, and Figure 10B is an exploded structural schematic diagram of the magnetic component shown in Figure 10A. As shown in the figure, compared with the magnetic component 1d shown in Figures 5A and 5B, which includes four soft magnetic sheets, the magnetic covering portion 5 of the magnetic component 1i of this embodiment only includes two soft magnetic sheets, namely a first soft magnetic sheet 51 and a second soft magnetic sheet 52. The first soft magnetic sheet 51 and the second soft magnetic sheet 52 are arranged opposite to each other, wherein the first soft magnetic sheet 51 covers the first side 21c of the magnetic core body 21, and the second soft magnetic sheet 52 covers the second side 21d of the magnetic core body 21. In this embodiment, the first winding 3 and the second winding 4 are respectively located between the first soft magnetic sheet 51 and the second soft magnetic sheet 52. In this embodiment, the magnetic component 1i further includes a fixing portion 6 that surrounds the outer sides of the first soft magnetic sheet 51 and the outer sides of the second soft magnetic sheet 52 to secure the first soft magnetic sheet 51 and the second soft magnetic sheet 52 to each other on the magnetic core body 21 of the magnetic core 2. Because the number of soft magnetic sheets in this embodiment is reduced, covering only two sides of the magnetic core body 21, the soft magnetic sheets of the magnetic component 1d in this embodiment form an open-type covering. This improves the heat dissipation capability of the magnetic component 1d, thereby reducing the overall temperature of the power supply incorporating the magnetic component 1d. In this embodiment, the fixing portion 6 is an adhesive material, such as tape, but is not limited thereto.

[0084] Please refer to Figures 11A and 11B, wherein Figure 11A is a schematic structural diagram of the magnetic assembly of the eleventh embodiment of the present disclosure, and Figure 11B is an exploded structural diagram of the magnetic assembly shown in Figure 11A. As shown in the figure, compared to the magnetic assembly 1i shown in Figures 10A and 10B, the magnetic assembly 1j of this embodiment further includes a third soft magnetic sheet 53, which is connected between one end of the first soft magnetic sheet 51 and one end of the second soft magnetic sheet 52. In addition, in this embodiment, the fixing portion 6 surrounds the outer side of the first soft magnetic sheet 51, the outer side of the third soft magnetic sheet 53, and the outer side of the second soft magnetic sheet 52 to fix the first soft magnetic sheet 51, the third soft magnetic sheet 53, and the second soft magnetic sheet 52 to each other on the magnetic core body 21 of the magnetic core 2.

[0085] Of course, the setting position of the soft magnetic sheet can also be adjusted according to needs. Please refer to Figures 12A and 12B, wherein Figure 12A is a structural schematic diagram of the magnetic component of the twelfth embodiment of the present disclosure, and Figure 12B is an exploded structural schematic diagram of the magnetic component shown in Figure 12A. As shown in the figure, compared with the magnetic component 1d shown in Figures 5A and 5B, which includes four soft magnetic sheets, the magnetic covering portion 5 of the magnetic component 1i of this embodiment only includes two soft magnetic sheets, namely the first soft magnetic sheet 51 and the second soft magnetic sheet 52. The first soft magnetic sheet 51 and the second soft magnetic sheet 52 are arranged relative to each other, wherein the first soft magnetic sheet 51 and the second soft magnetic sheet 52 respectively cover the two sides of the outer annular surface 21a of the magnetic core body 21. In this embodiment, the first winding 3 is located between the second winding 4 and the first soft magnetic sheet 51, and the second winding 4 is located between the first winding 3 and the second soft magnetic sheet 52. In this embodiment, the magnetic component 1i further includes a fixing portion 6, which surrounds the outer side of the first soft magnetic sheet 51 and the outer side of the second soft magnetic sheet 52 to fix the first soft magnetic sheet 51 and the second soft magnetic sheet 52 to each other on the magnetic core body 21 of the magnetic core 2.

[0086] Please refer to Figures 13A and 13B , where Figure 13A is a schematic structural diagram of the magnetic assembly according to the thirteenth embodiment of the present disclosure, and Figure 13B is an exploded structural diagram of the magnetic assembly shown in Figure 13A . As shown in the figures, compared to the magnetic assembly 1k shown in Figures 12A and 12B , the magnetic assembly 1m of this embodiment further includes a third soft magnetic sheet 53 connected between one end of the first soft magnetic sheet 51 and one end of the second soft magnetic sheet 52, and the third soft magnetic sheet 53 has an arc-shaped structure.

[0087] Please refer to Figures 14A and 14B, where Figure 14A shows a voltage-frequency waveform diagram for a conventional magnetic component, and Figure 14B shows a voltage-frequency waveform diagram for the magnetic component of the present disclosure. As can be seen from the waveforms, the conventional magnetic component exhibits higher noise at low frequencies. For example, as shown in Figure 14A , the maximum noise level can reach 78 dBuV. However, the magnetic component of the present disclosure exhibits lower noise at low frequencies. For example, as shown in Figure 14B , the maximum noise level is only 70 dBuV. This demonstrates that the structural arrangement of the magnetic component of the present disclosure achieves noise suppression.

[0088] In summary, the first winding and the second winding of the magnetic component of the present invention are located between a portion of the magnetic covering portion and another portion of the magnetic covering portion, so that the magnetic component utilizes the arrangement of the magnetic covering portion to enhance leakage inductance and impedance during high-frequency applications, and achieves the function of suppressing differential mode noise. Moreover, the magnetic component of the present invention is a single component, which makes it smaller in size and has fewer components, so that the power supply using the magnetic component of the present invention is also smaller in size, which makes it easier to achieve miniaturization and increase power density, while also improving power supply efficiency. In addition, the magnetic component of the present invention can utilize a method of reducing the number of soft magnetic sheets so that it only covers two sides of the magnetic core body, so that the coating method formed by the soft magnetic sheets of the magnetic component of the present invention is an open structure, so that the heat dissipation capacity of the magnetic component is better, thereby reducing the overall temperature of the power supply using the magnetic component.

Claims

1. A magnetic component, characterized in that: The magnetic assembly includes: A magnetic core, comprising a magnetic core body and a hollow portion, wherein the hollow portion penetrates the magnetic core body; At least two groups of windings are respectively wound around the magnetic core body, wherein each of the windings at least partially passes through the hollow portion; and A magnetic covering portion, wherein at least part of the at least two sets of windings are located between at least part of the magnetic covering portion and another part of the magnetic covering portion.

2. The magnetic assembly according to claim 1, characterized in that: The at least two groups of windings include a first winding and a second winding, the first winding surrounds a portion of the magnetic core body and is located on one side of the magnetic core body, the second winding surrounds a portion of the magnetic core body and is located on the other side of the magnetic core body, wherein the magnetic core body of the magnetic core includes a first side column, a second side column, a first connecting column and a second connecting column, the first side column and the second side column are arranged opposite to each other, the first connecting column and the second connecting column are arranged opposite to each other and are respectively connected between the first side column and the second side column, wherein the hollow portion is located between the first side column and the second side column, and between the first connecting column and the second connecting column, the first winding surrounds the first side column, and a portion of the first winding is passed through the hollow portion, the second winding surrounds the second side column, and a portion of the second winding is passed through the hollow portion.

3. The magnetic assembly according to claim 2, characterized in that: The magnetic covering portion includes a first soft magnetic sheet, a second soft magnetic sheet, a third soft magnetic sheet and a fourth soft magnetic sheet, the first soft magnetic sheet and the second soft magnetic sheet are arranged opposite to each other, the third soft magnetic sheet and the fourth soft magnetic sheet are arranged opposite to each other and are located between the first soft magnetic sheet and the second soft magnetic sheet, wherein the first soft magnetic sheet, the second soft magnetic sheet, the third soft magnetic sheet and the fourth soft magnetic sheet are an integrally formed structure.

4. The magnetic assembly according to claim 3, characterized in that: The first soft magnetic sheet, the third soft magnetic sheet, the second soft magnetic sheet and the fourth soft magnetic sheet of the magnetic covering part surround the first side column and the second side column, wherein the first winding is located between the first side column and the first soft magnetic sheet of the magnetic covering part, between the first side column and the second soft magnetic sheet of the magnetic covering part, and between the first side column and the third soft magnetic sheet of the magnetic covering part, the second winding is located between the second side column and the first soft magnetic sheet of the magnetic covering part, between the second side column and the second soft magnetic sheet of the magnetic covering part, and between the second side column and the fourth soft magnetic sheet of the magnetic covering part, and the first winding is located between the third soft magnetic sheet of the magnetic covering part and the second winding, and the second winding is located between the fourth soft magnetic sheet of the magnetic covering part and the first winding, wherein there is a gap between the first winding located in the hollow part and the second winding located in the hollow part, and the magnetic covering part is not penetrated through the gap.

5. The magnetic assembly according to claim 3, characterized in that: The third soft magnetic sheet, the first soft magnetic sheet, the fourth soft magnetic sheet and the second soft magnetic sheet of the magnetic covering part surround the first side column, the first connecting column, the second side column and the second connecting column, wherein the first winding is located between the first side column and the third soft magnetic sheet of the magnetic covering part, the second winding is located between the second side column and the fourth soft magnetic sheet of the magnetic covering part, and the first winding is located between the third soft magnetic sheet of the magnetic covering part and the second winding, and the second winding is located between the fourth soft magnetic sheet of the magnetic covering part and the first winding, wherein there is a gap between the first winding located in the hollow part and the second winding located in the hollow part, and the magnetic covering part is not penetrated through the gap.

6. The magnetic assembly according to claim 3, characterized in that: The first soft magnetic sheet, the third soft magnetic sheet, the second soft magnetic sheet and the fourth soft magnetic sheet of the magnetic covering part surround the first connecting column and the second connecting column, wherein the first winding is located between the first side column and the first soft magnetic sheet of the magnetic covering part and between the first side column and the second soft magnetic sheet of the magnetic covering part, the second winding is located between the second side column and the first soft magnetic sheet of the magnetic covering part and between the second side column and the second soft magnetic sheet of the magnetic covering part, and the first winding and the second winding are respectively located between the first soft magnetic sheet of the magnetic covering part and the second soft magnetic sheet of the magnetic covering part, wherein there is a gap between the first winding located in the hollow part and the second winding located in the hollow part, and the magnetic covering part is not penetrated through the gap.

7. The magnetic assembly according to claim 2, characterized in that: The magnetic covering portion includes a first covering element and a second covering element, the first covering element surrounds the first side column, the first winding is located between the first side column and the first covering element, the second covering element surrounds the second side column, the second winding is located between the second side column and the second covering element, wherein there is a gap between the first winding located in the hollow portion and the second winding located in the hollow portion, and at least part of the first covering element and at least part of the second covering element are respectively inserted into the gap.

8. The magnetic assembly according to claim 1, wherein: The at least two groups of windings include a first winding and a second winding. The magnetic core body of the magnetic core is a circular ring. The first winding surrounds a portion of the magnetic core body, and a portion of the first winding is passed through the hollow portion. The second winding surrounds another portion of the magnetic core body, and a portion of the second winding is passed through the hollow portion. The first winding and the second winding are located on opposite sides of the magnetic core body without contacting each other, wherein a first end of the first winding is located on a first side of the magnetic core body and a first end of the second winding is located on the first side of the magnetic core body, a first gap is formed between the first end of the first winding and the first end of the second winding, a second end of the first winding is located on a second side of the magnetic core body and a second end of the second winding is located on the second side of the magnetic core body, and a second gap is formed between the second end of the first winding and the second end of the second winding.

9. The magnetic assembly according to claim 8, characterized in that: The magnetic covering portion includes a first soft magnetic sheet, a second soft magnetic sheet, a third soft magnetic sheet and a fourth soft magnetic sheet, the first soft magnetic sheet and the second soft magnetic sheet are arranged opposite to each other, the third soft magnetic sheet and the fourth soft magnetic sheet are arranged opposite to each other and are located between the first soft magnetic sheet and the second soft magnetic sheet, wherein the first soft magnetic sheet, the second soft magnetic sheet, the third soft magnetic sheet and the fourth soft magnetic sheet are an integrally formed structure.

10. The magnetic assembly according to claim 9, characterized in that: The magnetic core body of the magnetic core includes an outer annular surface, an inner annular surface, a first side surface and a second side surface, the outer annular surface surrounds the inner annular surface, the first side surface and the second side surface are arranged opposite to each other and are respectively connected between the outer annular surface and the inner annular surface, the first soft magnetic sheet, the third soft magnetic sheet, the second soft magnetic sheet and the fourth soft magnetic sheet of the magnetic covering part surround the outer annular surface, the first side surface and the second side surface, wherein the first interval and the second interval are respectively exposed to the outside of the magnetic component through two openings of the magnetic covering part, wherein the magnetic covering part is not penetrated through the hollow part.

11. The magnetic assembly according to claim 9, characterized in that: The magnetic core body of the magnetic core includes an outer annular surface, an inner annular surface, a first side surface and a second side surface, the outer annular surface surrounds the inner annular surface, the first side surface and the second side surface are arranged opposite to each other and are respectively connected between the outer annular surface and the inner annular surface, the first soft magnetic sheet, the third soft magnetic sheet, the second soft magnetic sheet and the fourth soft magnetic sheet of the magnetic covering part surround the outer annular surface, the first side surface and the second side surface, wherein the first winding and the second winding are respectively exposed to the outside of the magnetic component through two openings of the magnetic covering part, wherein the magnetic covering part is not penetrated through the hollow part.

12. The magnetic assembly according to claim 9, characterized in that: The magnetic core body of the magnetic core includes an outer annular surface, an inner annular surface, a first side surface and a second side surface, the outer annular surface surrounds the inner annular surface, the first side surface and the second side surface are arranged opposite to each other and are respectively connected between the outer annular surface and the inner annular surface, the first soft magnetic sheet, the third soft magnetic sheet, the second soft magnetic sheet and the fourth soft magnetic sheet of the magnetic covering part surround the outer annular surface, wherein part of the first winding is located between the outer annular surface and the first soft magnetic sheet of the magnetic covering part, and part of the second winding is located between the outer annular surface and the second soft magnetic sheet of the magnetic covering part, wherein the first winding is located between the first soft magnetic sheet and the second winding of the magnetic covering part, and the second winding is located between the second soft magnetic sheet and the first winding of the magnetic covering part, wherein the magnetic covering part is not penetrated through the hollow part.

13. The magnetic assembly according to claim 8, characterized in that: The magnetic covering portion includes a first covering element and a second covering element, the first covering element surrounds the first winding, the first winding is located between the magnetic core body and the first covering element, the second covering element surrounds the second winding, the second winding is located between the magnetic core body and the second covering element, wherein at least part of the first covering element and at least part of the second covering element are respectively passed through the hollow portion.

14. The magnetic assembly according to claim 8, characterized in that The magnetic component includes a magnetic sheet and a base, the magnetic sheet is arranged in the hollow portion, and includes a partition and a protrusion, the extension direction of the partition is from the first interval toward the second interval, the protrusion is formed by a surface of the partition extending toward a direction perpendicular to the partition, the base includes a bottom plate and a plurality of positioning elements, the plurality of positioning elements respectively extend from a surface of the bottom plate in a direction perpendicular to the bottom plate, the plurality of positioning elements jointly define a first positioning groove and a second positioning groove, wherein the first positioning groove matches the partition, and the second positioning groove matches the protrusion, wherein the partition is arranged in the first positioning groove, the protrusion is arranged in the second positioning groove, and the magnetic sheet is tightly fitted between the plurality of positioning elements using the partition and the protrusion to be connected to the base.

15. The magnetic assembly according to claim 8, characterized in that The magnetic covering portion includes a first soft magnetic sheet and a second soft magnetic sheet, the first soft magnetic sheet and the second soft magnetic sheet are arranged opposite to each other, wherein the magnetic core body of the magnetic core includes an outer annular surface, an inner annular surface, a first side surface and a second side surface, the outer annular surface surrounds the inner annular surface, the first side surface and the second side surface are arranged opposite to each other and are respectively connected between the outer annular surface and the inner annular surface, the first soft magnetic sheet and the second soft magnetic sheet of the magnetic covering portion respectively cover the first side surface and the second side surface, wherein the first winding and the second winding are respectively located between the first soft magnetic sheet and the second soft magnetic sheet, wherein the magnetic component further includes a fixing portion, the fixing portion surrounds the outer side of the first soft magnetic sheet and the outer side of the second soft magnetic sheet, so as to fix the first soft magnetic sheet and the second soft magnetic sheet to each other on the magnetic core body of the magnetic core.

16. The magnetic assembly according to claim 15, characterized in that The magnetic covering portion also includes a third soft magnetic sheet connected between one end of the first soft magnetic sheet and one end of the second soft magnetic sheet, wherein the fixing portion surrounds the outer side of the first soft magnetic sheet, the outer side of the third soft magnetic sheet and the outer side of the second soft magnetic sheet to fix the first soft magnetic sheet, the third soft magnetic sheet and the second soft magnetic sheet to each other on the magnetic core body of the magnetic core.

17. The magnetic assembly according to claim 8, characterized in that The magnetic covering portion includes a first soft magnetic sheet and a second soft magnetic sheet, the first soft magnetic sheet and the second soft magnetic sheet are arranged opposite to each other, wherein the magnetic core body of the magnetic core includes an outer annular surface, an inner annular surface, a first side surface and a second side surface, the outer annular surface surrounds the inner annular surface, the first side surface and the second side surface are arranged opposite to each other and are respectively connected between the outer annular surface and the inner annular surface, the first soft magnetic sheet and the second soft magnetic sheet of the magnetic covering portion respectively cover the two sides of the outer annular surface, wherein the first winding is located between the second winding and the first soft magnetic sheet, and the second winding is located between the first winding and the second soft magnetic sheet, wherein the magnetic component also includes a fixing portion, surrounding the outer side of the first soft magnetic sheet and the outer side of the second soft magnetic sheet, so as to fix the first soft magnetic sheet and the second soft magnetic sheet to each other on the magnetic core body of the magnetic core.

18. The magnetic assembly according to claim 17, wherein: The magnetic covering portion further includes a third soft magnetic sheet connected between one end of the first soft magnetic sheet and one end of the second soft magnetic sheet, wherein the third soft magnetic sheet is an arc-shaped structure.

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