CN216957675U - Magnetic assembly - Google Patents

Abstract

The scheme discloses a magnetic assembly which comprises a magnetic core assembly and a winding assembly, wherein the magnetic core assembly comprises three magnetic covers and four magnetic columns, the first magnetic cover and the third magnetic cover are located on two opposite sides of the second magnetic cover, the first magnetic column and the second magnetic column are located between the first magnetic cover and the second magnetic cover, the third magnetic column and the fourth magnetic column are located between the second magnetic cover and the third magnetic cover, the winding assembly comprises four windings, the four windings are wound on the four magnetic columns respectively, the first winding and the first magnetic column jointly form a first magnetic element, the second winding and the second magnetic column jointly form a second magnetic element, the third winding and the third magnetic column jointly form a third magnetic element, and the fourth winding and the fourth magnetic column jointly form a fourth magnetic element.

Description

Magnetic assembly

Technical Field

The present disclosure relates to a magnetic assembly, and more particularly, to a magnetic assembly with high power density, high efficiency and low cost.

Background

In the field of data center power supply or communication power supply, the conversion circuit usually includes a resonant inductor and a transformer, and the resonant inductor and the transformer in the conventional conversion circuit are separate structures, i.e. two sets of transformers and two sets of resonant inductors are independent structures, however, this method causes the disadvantages of low power density, large volume, high process complexity and high cost of the conversion circuit. In addition, another conventional conversion circuit utilizes the leakage inductance of the transformer to realize the function of the resonant inductance, however, the inductance precision of the leakage inductance is difficult to control, and the large inductance of the leakage inductance causes the winding loss of the transformer to increase, thereby reducing the efficiency of the data center power supply.

Therefore, how to develop a magnetic assembly that overcomes the above disadvantages is a urgent need.

SUMMERY OF THE UTILITY MODEL

The magnetic assembly has the advantages of high power density, high efficiency and low cost.

To achieve the above objective, one embodiment of the present invention is a magnetic component including a magnetic core component and a winding component. The magnetic core assembly comprises a first magnetic cover, a second magnetic cover, a third magnetic cover, a first magnetic column, a second magnetic column, a third magnetic column and a fourth magnetic column, wherein the second magnetic cover is positioned between the first magnetic cover and the third magnetic cover, the first magnetic column and the second magnetic column are positioned between the first magnetic cover and the second magnetic cover, and the third magnetic column and the fourth magnetic column are positioned between the second magnetic cover and the third magnetic cover. The winding assembly comprises a first winding, a second winding, a third winding and a fourth winding, the first winding is wound on the first magnetic column, the second winding is wound on the second magnetic column, the third winding is wound on the third magnetic column, the fourth winding is wound on the fourth magnetic column, the first winding and the first magnetic column jointly form a first magnetic element, the second winding and the second magnetic column jointly form a second magnetic element, the third winding and the third magnetic column jointly form a third magnetic element, and the fourth winding and the fourth magnetic column jointly form a fourth magnetic element.

In an embodiment of the utility model, the first magnetic element is a first inductor, the second magnetic element is a second inductor, the third magnetic element is a primary side of a transformer, and the fourth magnetic element is a secondary side of the transformer.

In an embodiment of the utility model, the magnetic assembly has a first side column and a second side column, the first side column includes a first sub-side column and a second sub-side column, the first sub-side column is connected to one side of the first magnetic cover and one side of the second magnetic cover, the second sub-side column is connected to one side of the third magnetic cover, the second side column includes a third sub-side column and a fourth sub-side column, the third sub-side column is connected to the other side of the first magnetic cover and the other side of the second magnetic cover, the fourth sub-side column is connected to the other side of the third magnetic cover, wherein the first magnetic column and the second magnetic column are located between the first sub-side column and the third sub-side column at intervals, and the third magnetic column and the fourth magnetic column are located between the second sub-side column and the fourth sub-side column at intervals.

In an embodiment of the utility model, the second magnetic cover, the first magnetic pillar and the second magnetic pillar are integrally formed, and the third magnetic cover, the third magnetic pillar and the fourth magnetic pillar are integrally formed.

In an embodiment of the utility model, the third magnetic pillar includes a first sub-magnetic pillar and a second sub-magnetic pillar, the fourth magnetic pillar includes a third sub-magnetic pillar and a fourth sub-magnetic pillar, the first sub-magnetic pillar and the third sub-magnetic pillar are respectively connected to the second magnetic cover, the first sub-magnetic pillar, the third sub-magnetic pillar and the second magnetic cover are integrally formed, the second sub-magnetic pillar and the fourth sub-magnetic pillar are respectively connected to the third magnetic cover, and the second sub-magnetic pillar, the fourth sub-magnetic pillar and the third magnetic cover are integrally formed.

In an embodiment of the present invention, the first side column includes a first sub-side column, a second sub-side column and a third sub-side column, the first sub-side column is connected with one side of the first magnetic cover, the second sub-side column is connected with one side of the second magnetic cover, the third sub-side column is connected to one side of the third magnetic cover, the second side column comprises a fourth sub-side column, a fifth sub-side column and a sixth sub-side column, the fourth sub-side column is connected to the other side of the first magnetic cover, the fifth sub-side column is connected to the other side of the second magnetic cover, the sixth sub-side column is connected to the other side of the third magnetic cover, wherein the first magnetic pillar and the second magnetic pillar are spaced apart from each other between the first sub-side pillar and the fourth sub-side pillar, the first sub-magnetic pole and the third sub-magnetic pole are alternately arranged between the second sub-side pole and the fifth sub-side pole, the second sub-magnetic pole and the fourth sub-magnetic pole are alternately positioned between the third sub-side pole and the sixth sub-side pole.

In one embodiment of the present invention, the magnetic assembly further comprises a first bobbin having a first groove and a first bobbin through hole, a third bobbin having a second groove and a second bobbin through hole, and a fourth bobbin having a third groove and a third bobbin through hole, wherein the first winding is disposed in the first groove, the second bobbin is disposed between the first winding and the first bobbin, the second bobbin has a second groove and a second bobbin through hole, the second bobbin is disposed in the second bobbin through hole, the second winding is disposed in the second groove, the second bobbin is disposed between the second winding and the second bobbin, the third bobbin has a third groove and a third bobbin through hole, the third bobbin is disposed in the third groove, the third bobbin is located between the third winding and the third magnetic pillar, the fourth bobbin has a fourth groove and a fourth bobbin through hole, the fourth magnetic pillar penetrates through the fourth bobbin through hole, the fourth winding is arranged in the fourth groove, and the fourth bobbin is located between the fourth winding and the fourth magnetic pillar.

In an embodiment of the utility model, the winding assembly further includes a fifth winding, a sixth winding, a seventh winding and an eighth winding, the fifth winding is wound around the third magnetic pillar and located between the third winding and the second magnetic cover, the sixth winding is wound around the third magnetic pillar and located between the third winding and the third magnetic cover, the third winding, the fifth winding, the sixth winding and the third magnetic pillar jointly form the third magnetic element, the seventh winding is wound around the fourth magnetic pillar and located between the fourth winding and the second magnetic cover, the eighth winding is wound around the fourth magnetic pillar and located between the fourth winding and the third magnetic cover, and the fourth winding, the seventh winding, the eighth winding and the fourth magnetic pillar jointly form the fourth magnetic element.

Drawings

Fig. 1 is a schematic view of an assembly structure of a magnetic assembly according to a first embodiment of the disclosure;

FIG. 2 is an exploded view of the magnetic assembly of FIG. 1;

FIG. 3 is a schematic circuit diagram of a switching circuit applied to the magnetic device shown in FIG. 1;

fig. 4 is a schematic view of an assembly structure of a magnetic assembly according to a second embodiment of the disclosure;

FIG. 5 is an exploded view of the magnetic assembly of FIG. 4;

fig. 6 is a schematic view of an assembly structure of a magnetic assembly according to a third embodiment of the present disclosure;

fig. 7 is an exploded view of the magnetic assembly of fig. 6.

[ notation ] to show

1. 1a, 1 b: magnetic assembly

2: switching circuit

Vin: inputting AC electric energy

Vo: output direct current electric energy

C1, C2: capacitor with a capacitor element

21: full bridge circuit

211: first switch bridge arm

M1, M2: switch with a switch body

212: second switch bridge arm

M3, M4: switch with a switch body

L1: first inductor

L2: second inductor

22: transformer device

Co: output capacitor

L: load(s)

3: magnetic core assembly

31: first magnetic cover

32: second magnetic cover

33: third magnetic cover

34: first magnetic pole

35: second magnetic pole

36: third magnetic pole

361: first sub-magnetic pole

362: second sub-magnetic pole

37: fourth magnetic pole

371: third sub-magnetic pole

372: fourth sub-magnetic pole

38: first side column

381: first sub-side column

382: second sub-side column

383: third sub-side column

39: second side column

391: third sub-side column

392: fourth subsidiary side column

391: fourth subsidiary side column

392: fifth subsidiary side column

393: sixth subsidiary side column

4: winding assembly

41: first winding

42: second winding

43: third winding

44: the fourth winding

45: the fifth winding

46: the sixth winding

47: the seventh winding

48: eighth winding

51: first bobbin bracket

511: the first groove

512: first bobbin bracket through hole

52: second bobbin

521: second groove

522: second bobbin through hole

53: third bobbin winder bracket

531: third groove

532: third bobbin through hole

54: fourth bobbin

541: the fourth groove

542: fourth bobbin holder through hole

Detailed Description

Exemplary embodiments that embody features and advantages of this disclosure are described in detail below in the detailed description. It will be understood that the present disclosure is capable of various modifications in various aspects, all without departing from the scope of the disclosure, and the description and drawings herein are to be taken as illustrative and not restrictive in character.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic diagram of an assembly structure of a magnetic device according to a first embodiment of the present disclosure, fig. 2 is a schematic diagram of an exploded structure of the magnetic device shown in fig. 1, and fig. 3 is a schematic diagram of a circuit structure of a conversion circuit applied to the magnetic device shown in fig. 1. In the circuit structure, the magnetic device 1 of the present disclosure can be applied to the converter circuit 2 shown in fig. 3, two converter circuits 2 are shown in fig. 3, for convenience of description, the magnetic device 1 is applied to the converter circuit 2 located above fig. 3 for description, as shown in fig. 3, the converter circuit 2 receives and converts an input ac power Vin into an output dc power Vo to be provided to a load L, and each converter circuit 2 includes two capacitors C1, C2, a full bridge circuit 21, a first inductor L1, a second inductor L2, a transformer 22, and an output capacitor Co. The two capacitors C1, C2 are connected in parallel with each other. The full bridge circuit 21 receives an input ac power Vin, and includes a first switching leg 211 and a second switching leg 212, the first switching leg 211 is connected in parallel with two capacitors C1 and C2, and the first switching leg 211 includes two switches M1 and M2. Second switch leg 212 is connected in parallel with first switch leg 211, and second switch leg 212 includes two switches M3, M4. The first end of the first inductor L1 is connected to the midpoint of the first switch leg 211, i.e. the first end of the first inductor L1 is connected between the two switches M1 and M2. A first end of the second inductor L2 is connected to the midpoint of the second switch leg 212, i.e. a first end of the second inductor L2 is connected between the two switches M3 and M4. The primary side of the transformer 22 is connected to the second terminal of the first inductor L1 and the second terminal of the second inductor L2, and the secondary side of the transformer 22 is connected to the output capacitor Co through a conversion element. The output capacitor Co is connected in parallel with the load L.

The first inductor L1, the second inductor L2 and the transformer 22 of one of the conversion circuits 2 shown in fig. 3 (i.e. the conversion circuit 2 located above fig. 3) are integrated together in the single magnetic device 1 shown in fig. 1 and 2, and the structural features of the magnetic device 1 are further described below.

As shown in fig. 1 and 2, the magnetic component 1 includes a core component 3 and a winding component 4. The magnetic core assembly 3 includes a first magnetic cover 31, a second magnetic cover 32, a third magnetic cover 33, a first magnetic pillar 34, a second magnetic pillar 35, a third magnetic pillar 36, and a fourth magnetic pillar 37. The first magnetic cover 31 and the third magnetic cover 33 are located on two opposite sides of the second magnetic cover 32, that is, the second magnetic cover 32 is located between the first magnetic cover 31 and the third magnetic cover 33. The first magnetic pillar 34 and the second magnetic pillar 35 are disposed at an interval and both located between the first magnetic cover 31 and the second magnetic cover 32, in this embodiment, the second magnetic cover 32, the first magnetic pillar 34 and the second magnetic pillar 35 are integrally formed. The third magnetic pillar 36 and the fourth magnetic pillar 37 are disposed at an interval and both located between the second magnetic cover 32 and the third magnetic cover 33, in this embodiment, the third magnetic cover 33, the third magnetic pillar 36 and the fourth magnetic pillar 37 are integrally formed.

The winding assembly 4 includes a first winding 41, a second winding 42, a third winding 43, a fourth winding 44, a fifth winding 45, a sixth winding 46, a seventh winding 47, and an eighth winding 48. The first winding 41 is wound around the first magnetic pillar 34, and the first winding 41 and the first magnetic pillar 34 together form a first magnetic element, which is the first inductor L1 in fig. 3 in this embodiment. The second winding 42 is wound around the second magnetic pillar 35, and the second winding 42 and the second magnetic pillar 35 together form a second magnetic element, which is the second inductor L2 in fig. 3 in this embodiment. The third winding 43 is wound around the third magnetic pillar 36, the fifth winding 45 is wound around the third magnetic pillar 36 and located between the third winding 43 and the second magnetic cover 32, the sixth winding 46 is wound around the third magnetic pillar 36 and located between the third winding 43 and the third magnetic cover 33, and the third winding 43, the fifth winding 45, the sixth winding 46 and the third magnetic pillar 36 together form a third magnetic element, which is the primary side of the transformer 22 in fig. 3 in this embodiment. The fourth winding 44 is wound around the fourth magnetic pillar 37, the seventh winding 47 is wound around the fourth magnetic pillar 37 and located between the fourth winding 44 and the second magnetic cover 32, the eighth winding 48 is wound around the fourth magnetic pillar 37 and located between the fourth winding 44 and the third magnetic cover 33, and the fourth winding 44, the seventh winding 47, the eighth winding 48 and the fourth magnetic pillar 37 together form a fourth magnetic element, in this embodiment, the fourth magnetic element is a secondary side of the transformer 22 in fig. 3.

As can be seen from the above, the first inductor L1, the second inductor L2 and the transformer 22 of the conversion circuit 2 of the present disclosure are integrated in the magnetic component 1, so compared with the conventional conversion circuit in which the resonant inductor and the transformer are discrete structures, the magnetic component 1 of the present disclosure integrates the first inductor L1, the second inductor L2 and the transformer 22 in a single structure, so that the magnetic component 1 of the present disclosure has the advantages of higher power density, higher efficiency, smaller volume, simpler manufacturing process and lower cost.

However, the first magnetic element, the second magnetic element, the third magnetic element and the fourth magnetic element of the magnetic component 1 may not only form the first inductor L1, the second inductor L2, and the primary side and the secondary side of the transformer 22, respectively, but in some embodiments, the first magnetic element, the second magnetic element, the third magnetic element and the fourth magnetic element may form four different inductors, respectively. In other embodiments, the first magnetic element, the second magnetic element, the third magnetic element and the fourth magnetic element may form two transformers, for example, the first magnetic element and the second magnetic element respectively form a primary side and a secondary side of the first transformer, and the third magnetic element and the fourth magnetic element respectively form a primary side and a secondary side of the second transformer. Of course, the first magnetic element, the second magnetic element, the third magnetic element and the fourth magnetic element of the magnetic assembly 1 may also constitute other elements, which are not described herein again. Furthermore, in some embodiments, there is a first air gap between the first magnetic pillar 34 and the first magnetic lid 31, and/or a second air gap between the second magnetic pillar 35 and the first magnetic lid 31, and/or a third air gap between the third magnetic pillar 36 and the second magnetic lid 32, and/or a fourth air gap between the fourth magnetic pillar 37 and the second magnetic lid 32.

Referring back to fig. 1 and 2, the magnetic element 1 has a first side pillar 38 and a second side pillar 39. The first side column 38 includes a first sub-side column 381 and a second sub-side column 382, the first sub-side column 381 and the second sub-side column 382 are disposed independently of each other, the first sub-side column 381 is connected to one side of the first magnetic lid 31 and one side of the second magnetic lid 32, and the second sub-side column 382 is connected to one side of the third magnetic lid 33. The second side column 39 includes a third sub-side column 391 and a fourth sub-side column 392, the third sub-side column 391 is connected to the other side of the first magnetic cover 31 and the other side of the second magnetic cover 32, the fourth sub-side column 392 is connected to the other side of the third magnetic cover 33, wherein the second magnetic cover 32 is located between the first sub-side column 381 and the third sub-side column 391, the third magnetic cover 33 is located between the second sub-side column 382 and the fourth sub-side column 392, the first magnetic column 34 and the second magnetic column 35 are located between the first sub-side column 381 and the third sub-side column 391 at intervals, and the third magnetic column 36 and the fourth magnetic column 37 are located between the second sub-side column 382 and the fourth sub-side column 392 at intervals.

Referring to fig. 4 and 5, fig. 4 is a schematic view of an assembled structure of a magnetic assembly according to a second embodiment of the present disclosure, and fig. 5 is a schematic view of an exploded structure of the magnetic assembly shown in fig. 4. As shown in the figures, compared to the structure in which the first magnetic pillar 34 and the second magnetic pillar 35 of the magnetic component 1 shown in fig. 1 and fig. 2 are integrally formed with the second magnetic cover 32, the first magnetic pillar 34 and the second magnetic pillar 35 of the magnetic component 1a of the present embodiment are integrally formed with the first magnetic cover 31. In addition, the third magnetic pillar 36 of the magnetic device 1a of the present embodiment further includes a first sub-magnetic pillar 361 and a second sub-magnetic pillar 362, the first sub-magnetic pillar 361 and the second sub-magnetic pillar 362 are independent from each other, the first sub-magnetic pillar 361 is connected to the second magnetic lid 32, and the second sub-magnetic pillar 362 is connected to the third magnetic lid 33. The fourth magnetic pillar 37 includes a third sub-magnetic pillar 371 and a fourth sub-magnetic pillar 372, the third sub-magnetic pillar 371 and the fourth sub-magnetic pillar 372 are independent of each other, the third sub-magnetic pillar 371 is connected to the second magnetic cover 32, and the fourth sub-magnetic pillar 372 is connected to the third magnetic cover 33.

Compared to the magnetic assembly 1 shown in fig. 1 and 2 in which the first side column 38 and the second side column 39 only include two sub-side columns, the first side column 38 of the magnetic assembly 1a of the present embodiment includes a first sub-side column 381, a second sub-side column 382 and a third sub-side column 383, the first sub-side column 381, the second sub-side column 382 and the third sub-side column 383 are disposed independently of each other, the first sub-side column 381 is connected to one side of the first magnetic cap 31, the second sub-side column 382 is connected to one side of the second magnetic cap 32, and the third sub-side column 383 is connected to one side of the third magnetic cap 33. The second side column 39 comprises a fourth sub-column 391, a fifth sub-column 392 and a sixth sub-column 393, the fourth sub-column 391 is connected to the other side of the first magnetic cover 31, the fifth sub-column 392 is connected to the other side of the second magnetic cover 32, the sixth sub-column 393 is connected to the other side of the third magnetic cover 33, the first magnetic cover 31 is located between the first sub-side post 381 and the fourth sub-side post 391, the second magnetic cover 32 is located between the second sub-side post 382 and the fifth sub-side post 392, the third magnetic cover 33 is located between the third sub-side post 383 and the sixth sub-side post 393, the first magnetic post 34 and the second magnetic post 35 are located between the first sub-side post 381 and the fourth sub-side post 391 at intervals, the first sub-magnetic post 361 and the third sub-magnetic post 371 are located between the second sub-side post 382 and the fifth sub-side post 392 at intervals, and the second sub-magnetic post 362 and the fourth sub-magnetic post 372 are located between the third sub-side post 383 and the sixth sub-side post 393 at intervals.

Referring to fig. 6 and 7, fig. 6 is a schematic view of an assembled structure of a magnetic assembly according to a third embodiment of the present disclosure, and fig. 7 is a schematic view of an exploded structure of the magnetic assembly shown in fig. 6. As shown, compared to the magnetic component 1 shown in fig. 1 and 2, the magnetic component 1b of the present embodiment further includes a first bobbin 51, a second bobbin 52, a third bobbin 53 and a fourth bobbin 54. The first bobbin 51 has a first groove 511 and a first bobbin through hole 512, the first magnetic pillar 34 is disposed through the first bobbin through hole 512, the first bobbin 51 is sleeved on the first magnetic pillar 34, the first groove 511 is disposed around an outer ring of the first bobbin 51, the first winding 41 is disposed in the first groove 511 in at least one turn, wherein the first bobbin 51 is disposed between the first winding 41 and the first magnetic pillar 34. The second bobbin 52 has a second groove 521 and a second bobbin through hole 522, the second magnetic pillar 35 is disposed through the second bobbin through hole 522, such that the second bobbin 52 is sleeved on the second magnetic pillar 35, the second groove 521 is disposed around an outer ring of the second bobbin 52, the second winding 42 is disposed in the second groove 521 in at least one turn, and the second bobbin 52 is disposed between the second winding 42 and the second magnetic pillar 35. The third bobbin 53 has a third groove 531 and a third bobbin through hole 532, the third magnetic pillar 36 is disposed through the third bobbin through hole 532, such that the third bobbin 53 is sleeved on the third magnetic pillar 36, the third groove 531 is disposed around the outer ring of the third bobbin 53, the third winding 43, the fifth winding 45 and the sixth winding 46 are all disposed in the third groove 531 by at least one turn, wherein the third bobbin 53 is disposed between the third winding 43 and the third magnetic pillar 36. The fourth bobbin 54 has a fourth groove 541 and a fourth bobbin through hole 542, the fourth magnetic pillar 37 is disposed through the fourth bobbin through hole 542, such that the fourth bobbin 54 is sleeved on the fourth magnetic pillar 37, the fourth groove 541 is disposed around the outer ring of the fourth bobbin 54, the fourth winding 44, the seventh winding 47 and the eighth winding 48 are all disposed in the fourth groove 541 by at least one turn, wherein the fourth bobbin 54 is disposed between the fourth winding 44 and the fourth magnetic pillar 37.

In summary, the first inductor, the second inductor and the transformer of the conversion circuit are integrated into a magnetic component, so that compared with the conventional conversion circuit in which the resonant inductor and the transformer are discrete structures, the magnetic component integrates the first inductor, the second inductor and the transformer into a single structure, and thus the magnetic component has the advantages of high power density, high efficiency, small size, simplified manufacturing process and low cost.

Claims (8)

1. A magnetic assembly, comprising:

a magnetic core assembly, comprising a first magnetic cover, a second magnetic cover, a third magnetic cover, a first magnetic column, a second magnetic column, a third magnetic column and a fourth magnetic column, wherein the second magnetic cover is located between the first magnetic cover and the third magnetic cover, the first magnetic column and the second magnetic column are located between the first magnetic cover and the second magnetic cover, and the third magnetic column and the fourth magnetic column are located between the second magnetic cover and the third magnetic cover; and

a winding assembly including a first winding wound around the first magnetic pole, a second winding wound around the second magnetic pole, a third winding wound around the third magnetic pole, and a fourth winding wound around the fourth magnetic pole, wherein the first winding and the first magnetic pole together form a first magnetic element, the second winding and the second magnetic pole together form a second magnetic element, the third winding and the third magnetic pole together form a third magnetic element, and the fourth winding and the fourth magnetic pole together form a fourth magnetic element.

2. The magnetic component of claim 1, wherein the first magnetic element is a first inductor, the second magnetic element is a second inductor, the third magnetic element is a primary side of a transformer, and the fourth magnetic element is a secondary side of the transformer.

3. The magnetic assembly of claim 1, wherein the magnetic assembly has a first side column and a second side column, the first side column includes a first sub-side column and a second sub-side column, the first sub-side column is connected to one side of the first magnetic cover and one side of the second magnetic cover, the second sub-side column is connected to one side of the third magnetic cover, the second side column includes a third sub-side column and a fourth sub-side column, the third sub-side column is connected to the other side of the first magnetic cover and the other side of the second magnetic cover, the fourth sub-side column is connected to the other side of the third magnetic cover, wherein the first magnetic column and the second magnetic column are spaced apart from each other between the first sub-side column and the third sub-side column, and the third magnetic column and the fourth magnetic column are spaced apart from each other between the second sub-side column and the fourth sub-side column.

4. The magnetic component of claim 1, wherein the second magnetic cap, the first magnetic post, and the second magnetic post are integrally formed, and the third magnetic cap, the third magnetic post, and the fourth magnetic post are integrally formed.

5. The magnetic assembly of claim 1, wherein the third magnetic pillar comprises a first sub-magnetic pillar and a second sub-magnetic pillar, the fourth magnetic pillar comprises a third sub-magnetic pillar and a fourth sub-magnetic pillar, the first sub-magnetic pillar and the third sub-magnetic pillar are respectively connected to the second magnetic cover, the first sub-magnetic pillar, the third sub-magnetic pillar and the second magnetic cover are integrally formed, the second sub-magnetic pillar and the fourth sub-magnetic pillar are respectively connected to the third magnetic cover, and the second sub-magnetic pillar, the fourth sub-magnetic pillar and the third magnetic cover are integrally formed.

6. The magnetic assembly of claim 5, wherein the first side column comprises a first sub-side column, a second sub-side column and a third sub-side column, the first sub-side column is connected to one side of the first magnetic cover, the second sub-side column is connected to one side of the second magnetic cover, the third sub-side column is connected to one side of the third magnetic cover, the second side column comprises a fourth sub-side column, a fifth sub-side column and a sixth sub-side column, the fourth sub-side column is connected to the other side of the first magnetic cover, the fifth sub-side column is connected to the other side of the second magnetic cover, the sixth sub-side column is connected to the other side of the third magnetic cover, wherein the first and second sub-side columns are spaced apart from each other between the first and fourth sub-side columns, the first and third sub-side columns are spaced apart from each other between the second and fifth sub-side columns, the second sub-magnetic pole and the fourth sub-magnetic pole are alternately positioned between the third sub-side pole and the sixth sub-side pole.

7. The magnetic component of claim 1, wherein the magnetic component further comprises a first bobbin having a first slot and a first bobbin hole, a second bobbin having a first winding disposed in the first slot, a third bobbin having a second slot and a second bobbin hole, and a fourth bobbin having a first winding disposed in the first slot, a second winding disposed in the second slot, a third bobbin having a third slot and a third bobbin hole, the third winding is disposed in the third groove, wherein the third winding frame is disposed between the third winding and the third magnetic pillar, the fourth winding frame has a fourth groove and a fourth winding frame through hole, the fourth magnetic pillar is disposed through the fourth winding frame through hole, the fourth winding is disposed in the fourth groove, and the fourth winding frame is disposed between the fourth winding and the fourth magnetic pillar.

8. The magnetic component of claim 1, wherein the winding component further comprises a fifth winding, a sixth winding, a seventh winding, and an eighth winding, the fifth winding is wound around the third magnetic pillar and located between the third winding and the second magnetic cover, the sixth winding is wound around the third magnetic pillar and located between the third winding and the third magnetic cover, the third winding, the fifth winding, the sixth winding, and the third magnetic pillar together form the third magnetic element, the seventh winding is wound around the fourth magnetic pillar and located between the fourth winding and the second magnetic cover, the eighth winding is wound around the fourth magnetic pillar and located between the fourth winding and the third magnetic cover, and the fourth winding, the seventh winding, the eighth winding, and the fourth magnetic pillar together form the fourth magnetic element.

Images