CN217214425U - Transformer device - Google Patents

Abstract

The scheme is that the transformer comprises a magnetic core group, a first magnetic core body, a second magnetic core body and at least one winding magnetic column, wherein the at least one winding magnetic column is arranged between the first magnetic core body and the second magnetic core body; the first winding is wound on the winding magnetic column; the second winding is wound on the winding magnetic column; and at least one magnetic conductive substance arranged between the first winding and the second winding.

Description

Transformer

Technical Field

The present invention relates to a transformer, and more particularly, to a transformer using a magnetic material to improve leakage inductance.

Background

The LLC transformer is one of the mainstream transformers at present, and the current newer method is to form a resonant inductor by using the leakage inductance between the primary side and the secondary side of the transformer, so that the resonant inductor and the transformer are integrated together, thereby achieving the requirement of high power density. The size of the resonant inductor depends on the number of turns of the primary side of the transformer and the distance between the primary side and the secondary side of the transformer, wherein the number of turns of the coil cannot be increased infinitely due to the transformation ratio of the transformer, the wire loss of the coil, and the like, so the size of the resonant inductor of the existing transformer is actually adjusted by mainly increasing the distance between the primary side and the secondary side of the transformer.

However, when the distance between the primary side and the secondary side of the transformer is increased to increase the inductance (leakage inductance) of the resonant inductor, the magnetic core must be lengthened synchronously, resulting in an increase in magnetic resistance and a poor efficiency of the transformer. In addition, the core is easy to break due to the lengthening of the core, and the requirement of high power density is not met. Furthermore, when a metal shell or other components are present around the transformer, leakage flux from the transformer may cut into the surrounding metal shell or other components, thereby causing an increase in loss of the transformer.

Therefore, how to develop a transformer to solve the problems faced by the prior art is a problem to be faced in the field.

SUMMERY OF THE UTILITY MODEL

The transformer comprises a magnetic conductive substance arranged between a first winding and a second winding, and the magnetic conductive substance is used for increasing the inductance value of leakage inductance between the first winding and the second winding, so that the total loss of the transformer is reduced, the size of the transformer is reduced, and the loss caused by the leakage inductance of the transformer is further reduced.

To achieve the above objective, a preferred embodiment of the present invention provides a transformer, which includes a core assembly including a first core body, a second core body and at least one winding leg, the at least one winding leg being disposed between the first core body and the second core body; the first winding is wound on the winding magnetic column; the second winding is wound on the winding magnetic column; and at least one magnetic substance arranged between the first winding and the second winding.

According to an embodiment of the present disclosure, the magnetic conductive material is a sheet structure, a powder structure or a gel structure.

According to an embodiment of the present disclosure, the permeability of the magnetic conductive material is greater than or equal to 500H/m and less than or equal to 4000H/m.

According to an embodiment of the present disclosure, the thickness of the magnetic conductive material is less than 5 mm.

According to an embodiment of the present disclosure, the magnetic conductive material is a hollow ring structure or a C-shaped structure.

According to an embodiment of the disclosure, the transformer further includes a bobbin assembled with the magnetic core set, and the bobbin includes a first partition, a first winding portion, a second partition, a third partition, a second winding portion, a fourth partition and a through hole, the first partition and the second partition are disposed on two opposite sides of the first winding portion and respectively connected to the first winding portion, the first winding portion is used for winding the first winding, the third partition and the fourth partition are disposed on two opposite sides of the second winding portion and respectively connected to the second winding portion, the third partition is disposed adjacent to the second partition, a space is formed between the third partition and the second partition to form a receiving area for the magnetic material, the second winding portion is used for winding the second winding, the through hole penetrates through the first partition, The first winding part, the second partition plate, the third partition plate, the second winding part and the fourth partition plate are used for the winding magnetic column of the magnetic core group to penetrate through, so that the first winding, the second winding and the magnetic conduction material are wound on the winding magnetic column through the winding frame.

According to an embodiment of the present disclosure, the transformer further includes a bobbin assembled with the core assembly, the bobbin includes a first partition, a first winding portion, a second winding portion, a through hole and a second partition, wherein the first partition board and the second partition board are located at two opposite sides of the second winding portion and connected with the second winding portion, one end of the first winding part is connected with the first clapboard, the first winding part is used for winding the first winding, the second winding part is used for winding the second winding, the magnetic conduction material is wound on the first winding part or the second winding part and is positioned between the first winding and the second winding, the through hole penetrates through the first partition board, the second partition board, the first winding part and the second winding part, the winding magnetic column of the magnetic core group is used for being penetrated and arranged, so that the first winding, the second winding and the magnetic conduction material are wound on the winding magnetic column through the winding frame.

According to an embodiment of the present disclosure, the transformer further includes a material sheet, which is wound on the first winding portion or the second winding portion, and is adjacent to the magnetic conductive material and located between the first winding and the second winding.

According to an embodiment of the present disclosure, the material sheet has a magnetic property or no magnetic property, and the material of the material sheet is the same as or different from that of the magnetic material.

According to an embodiment of the present disclosure, the material sheet is a hollow ring structure. According to one embodiment of the present disclosure, the at least one first winding includes a first winding and a second winding, the at least one magnetic conductive material includes a first magnetic conductive material and a second magnetic conductive material, the second winding is disposed between the first winding and the second winding, the first magnetic conductive material is disposed between the first winding and the second winding, and the second magnetic conductive material is disposed between the second winding and the first winding.

According to an embodiment of the present disclosure, the at least one first winding includes a first winding and a second first winding, the at least one second winding includes a first second winding and a second winding, the at least one magnetic substance includes a first magnetic substance and a second magnetic substance, the first second winding and the second winding are located between the first winding and the second first winding, the first magnetic substance is located between the first winding and the first second winding, and the second magnetic substance is located between the second first winding and the second winding.

According to an embodiment of the present disclosure, the at least one first winding includes a first winding, a second first winding, and a third first winding, the at least one second winding includes a first second winding and a second winding, the at least one magnetic substance includes a first magnetic substance and a second magnetic substance, the first second winding is located between the first winding and the second first winding, the second winding is located between the second first winding and the third first winding, the first magnetic substance is located between the first winding and the first second winding, and the second magnetic substance is located between the second winding and the third first winding.

According to an embodiment of the present disclosure, the at least one first winding includes a first winding, a second first winding, and a third first winding, the at least one second winding comprises an A second winding and a B second winding, the at least one magnetic conductive material comprises a first magnetic conductive material, a second magnetic conductive material, a third magnetic conductive material and a fourth magnetic conductive material, the first second winding is arranged between the first winding and the second first winding, the second winding is arranged between the second first winding and the third first winding, and the first magnetic substance is arranged between the first winding and the first second winding, the second magnetic substance is located between the first second winding and the second first winding, the third magnetic substance is located between the second first winding and the second winding, and the fourth magnetic substance is located between the second winding and the third first winding.

According to an embodiment of the present disclosure, the at least one first winding includes a first winding, a second first winding, and a third first winding, the at least one second winding includes a first second winding and a second winding, the at least one magnetic substance includes a first magnetic substance and a second magnetic substance, the first second winding is located between the first winding and the second first winding, the second winding is located between the second first winding and the third first winding, the first magnetic substance is located between the first second winding and the second first winding, and the second magnetic substance is located between the second winding and the second winding.

According to an embodiment of the present disclosure, the winding magnetic pillar includes a first winding magnetic pillar and a second winding magnetic pillar, and the first winding magnetic pillar and the second winding magnetic pillar are respectively wound by the at least one first winding, the at least one second winding, and the at least one magnetic conductive material.

According to an embodiment of the present disclosure, the winding magnetic pillar includes a first winding magnetic pillar, a second winding magnetic pillar, and a third winding magnetic pillar, and the first winding magnetic pillar, the second winding magnetic pillar, and the third winding magnetic pillar are respectively wound by the at least one first winding, the at least one second winding, and the at least one magnetic conductive material.

Drawings

Fig. 1 is an exploded view of a transformer according to a first preferred embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the transformer shown in FIG. 1 with the first and second windings removed;

FIG. 3 is a schematic diagram illustrating the comparison of the losses caused by the leakage flux of the transformer shown in FIG. 1 and the conventional transformer;

fig. 4 is an exploded view of a transformer according to a second preferred embodiment of the present disclosure;

FIG. 5 is a schematic diagram of the transformer shown in FIG. 4 with the first winding, the second winding and the magnetic conductive material removed;

FIG. 6 is an exploded view of a transformer according to a third preferred embodiment of the present invention;

fig. 7 is a schematic view of an assembly structure of a transformer according to a fourth preferred embodiment of the present disclosure;

fig. 8 to 11 are schematic structural diagrams illustrating respective installation positions and numbers of the first winding, the second winding and the magnetic conductive material in different embodiments according to the spirit of the transformer of the present invention;

FIG. 12 is a schematic view of an assembly structure of a transformer according to a fifth preferred embodiment of the present invention;

fig. 13 is a schematic view of an assembly structure of a transformer according to a sixth preferred embodiment of the present disclosure.

[ notation ] to show

1. 1a, 1b, 1c, 1d, 1e transformers

2 magnetic core group

3 first winding

4: second winding

5 magnetic conductive material

20 first magnetic core body

21 second magnetic core body

22 winding magnetic pole

22a, 22b sub-winding magnetic pole

22A first winding magnetic column

22B second winding magnetic column

22C, third winding magnetic column

23 first side column

24 second side column

d is distance

6: winding rack

60. 60a first partition plate

61 the first winding part

62. 64a second partition

63 third partition plate

64 the second winding part

65 the fourth partition plate

66. 63a through hole

61a first winding part

62a second winding part

7: material sheet

First winding of A3 a

3b first winding

3c first winding

5a first magnetic substance

5b second magnetic substance

5c third magnetic substance

5d fourth magnetic substance

4a first secondary winding

4b second winding

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 without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

Referring to fig. 1, 2 and 3, fig. 1 is an exploded view of a transformer according to a first preferred embodiment of the present invention, fig. 2 is a combined structure of the transformer shown in fig. 1 with a first winding and a second winding removed, and fig. 3 is a comparison view of losses caused by leakage of the transformer shown in fig. 1 and a conventional transformer. As shown in fig. 1, fig. 2 and fig. 3, the transformer 1 of the present embodiment can be, but is not limited to, an LLC transformer, that is, a resonant inductor is formed by leakage inductance between a primary side and a secondary side of the transformer 1, so that the resonant inductor is integrated in the transformer 1, and the transformer 1 includes a magnetic core group 2, at least one first winding 3, at least one second winding 4 and at least one magnetic conductive substance 5. The magnetic core group 2 comprises a first magnetic core body 20, a second magnetic core body 21 and at least one winding magnetic column 22. The first core body 20 and the second core body 21 are located on two opposite sides of the transformer 1. Fig. 1 illustrates that the magnetic core assembly 2 includes a single magnetic winding pillar 22, and the magnetic winding pillar 22 is located between the first magnetic core body 20 and the second magnetic core body 21, and can be connected to the first magnetic core body 20 or the second magnetic core body 21. In some embodiments, the winding magnetic pillar 22 may be composed of two sub-winding magnetic pillars 22a, 22b, wherein one sub-winding magnetic pillar 22a is connected to the first magnetic core body 20, and the other sub-winding magnetic pillar 22b is connected to the second magnetic core body 21. In addition, in some embodiments, the magnetic core assembly 2 further includes a first side pillar 23 and a second side pillar 24, which are located between the first magnetic core body 20 and the second magnetic core body 21 and can be connected to the first magnetic core body 20 and/or the second magnetic core body 21, and the winding magnetic pillar 22 is located between the first side pillar 23 and the second side pillar 24.

The first winding 3 forms the primary side of the transformer 1 and the second winding 4 forms the secondary side of the transformer 1, and in fig. 1, the transformer 1 is illustrated as including a single first winding 3 and a single second winding 4. The first winding 3 and the second winding 4 are wound around the winding magnetic pole 22.

The magnetic conductive material 5 may be a sheet structure, and is wound around the winding magnetic pillar 22 and disposed between the first winding 3 and the second winding 4, and the magnetic conductive material 5 is used to increase the inductance of the leakage inductance between the primary side and the secondary side of the transformer 1. The permeability of the magnetic material 5 may be greater than or equal to 500H/m, and less than or equal to 4000H/m, and in some embodiments, the permeability of the magnetic material 5 may be greater than or equal to 700H/m, and less than or equal to 1300H/m. In addition, the thickness of the magnetic conductive material 5 is less than 5mm, in some embodiments, the thickness of the magnetic conductive material 5 may be, but is not limited to, 1mm, and the magnetic conductive material 5 may be iron oxide (Ferrite). Of course, the magnetic conductive material 5 may be a powder structure and wound around the winding magnetic pillar 22 after being fixed. Alternatively, in other embodiments, the magnetic permeable material 5 may also be a gel structure.

In some embodiments, the magnetic conductive material 5 may be a hollow ring structure, however, for convenience of automatic assembly, the magnetic conductive material 5 may also be a C-shaped structure with a notch, and of course, the magnetic conductive material 5 may also be designed into other shapes according to actual requirements. The first winding 3 and the second winding 4 may be formed by winding wire, but not limited thereto, and may be formed by copper sheets.

In addition, the transformer 1 further includes at least one bobbin 6, wherein the bobbin 6 is assembled with the core assembly 2, disposed between the first core body 20 and the second core body 21, and includes a first partition 60, a first winding portion 61, a second partition 62, a third partition 63, a second winding portion 64, a fourth partition 65, and a through hole 66. The first partition 60 and the second partition 61 are located at two opposite sides of the first winding portion 61 and are respectively connected to the first winding portion 61. The first winding portion 61 is used for winding the first winding 3. The third partition 63 and the fourth partition 65 are located on two opposite sides of the second winding portion 64 and are connected to the second winding portion 64, and the third partition 63 and the second partition 62 are disposed adjacent to each other, and a space is formed between the third partition 63 and the second partition 62 to form a receiving area for the magnetic material 5 to be disposed so that the magnetic material 5 is located between the first winding 3 and the second winding 4. The second winding portion 64 is used for winding the second winding 4. The through hole 66 penetrates through the first partition 60, the first winding portion 61, the second partition 62, the third partition 63, the second winding portion 64, and the fourth partition 65, and when the bobbin 6 is assembled with the first magnetic core body 20 and the second magnetic core body 21, the through hole 66 allows the winding magnetic pillar 22 of the corresponding magnetic core group 2 to pass through, so that the first winding 3, the second winding 4, and the magnetic conductive material 5 are wound on the winding magnetic pillar 22 through the bobbin 6.

Of course, in other embodiments, the magnetic permeable material 5 may be wound on the first winding portion 61 or the second winding portion 64, as long as the magnetic permeable material 5 is located between the first winding 3 and the second winding 4.

Referring to fig. 4 and 5, fig. 4 is an exploded schematic view of a transformer according to a second preferred embodiment of the present invention, and fig. 5 is an assembled schematic view of the transformer shown in fig. 4 after a first winding, a second winding and a magnetic conductive material are removed. As shown in fig. 4 and 5, the structure of the transformer 1a of the present embodiment is similar to the structure of the transformer 1 shown in fig. 1, and therefore similar elements are denoted by the same symbols to represent similar functions and structures, but compared to the bobbin 6 of the transformer 1 shown in fig. 1, the bobbin 6a of the transformer 1a of the present embodiment includes a first partition 60a, a first winding portion 61a, a second winding portion 62a, a through hole 63a and a second partition 64a, wherein the first partition 60a and the second partition 64a are located at two opposite sides of the second winding portion 62a and connected to the second winding portion 62 a. The first winding portion 61a is used for winding the first winding 3, one end of the first winding portion 61a is connected to the first partition 60a, and the second winding portion 62a is used for winding the second winding 4. The through hole 63a penetrates through the first partition 60a, the second partition 64a, the first winding portion 61a and the second winding portion 62a, and when the bobbin 6a is assembled with the first magnetic core body 20 and the second magnetic core body 21, the through hole 63a is used for the corresponding winding magnetic pillar 22 of the magnetic core set 2 to penetrate through, so that the first winding 3, the second winding 4 and the magnetic conductive material 5 are wound on the winding magnetic pillar 22 through the bobbin 6 a. In the present embodiment, since the bobbin 6a of the transformer 1a has only two partitions, the winding space on the first winding portion 61a and the second winding portion 62a of the bobbin 6a of the transformer 1a of the present embodiment can be increased compared to the bobbin 6 of the transformer 1 shown in fig. 1 having four partitions.

In some embodiments, the thickness of the second partition 64a may be, but is not limited to, 0.8 mm. The magnetic permeable material 5 may be wound around the first winding portion 61a or the second winding portion 62a and positioned between the first winding 3 and the second winding 4.

Please refer to fig. 6, which is an exploded schematic diagram of a transformer according to a third preferred embodiment of the present disclosure. As shown in fig. 6, the structure of the transformer 1b of the present embodiment is similar to the structure of the transformer 1a shown in fig. 4, and therefore similar elements are denoted by the same symbols to represent similar functions and structures, but the transformer 1b of the present embodiment further includes at least one material sheet 7, the material sheet 7 may have magnetic permeability or no magnetic permeability, and the material of the material sheet 7 may be the same as or different from the material of the magnetic permeable substance 5, in addition, the material sheet 7 is further wound on the first winding portion 61a or the second winding portion 62a, and may be adjacent to the magnetic permeable substance 5 and located between the first winding 3 and the second winding 4, and through the selection of the thickness of the material sheet 7, the inductance value of the leakage inductance between the primary side and the secondary side of the transformer 1 may be further increased in cooperation with the magnetic permeable substance 5.

In some embodiments, the shape of the material sheet 7 may be a hollow ring structure as shown in fig. 6, but is not limited thereto, and may be designed into other shapes according to actual requirements.

Please refer to fig. 7, which is a schematic diagram of an assembly structure of a transformer according to a fourth preferred embodiment of the present disclosure. As shown in fig. 7, the structure of the transformer 1c of the present embodiment is similar to the structure of the transformer 1 shown in fig. 1, so similar elements are denoted by the same symbols to represent similar functions and structures, but compared to the transformer 1 shown in fig. 1 comprising a single first winding 3 and a single magnetic conductive substance 5, the transformer 1c of the present embodiment has two first windings (hereinafter referred to as an first winding 3a and a second winding 3b) and two magnetic conductive substances (hereinafter referred to as a first magnetic conductive substance 5a and a second magnetic conductive substance 5b), wherein the inductance of the leakage inductance of the transformer 1c with the first winding 3a and the second winding 3b is lower than that of the transformer 1 with the single first winding 3 shown in fig. 1 when the magnetic conductive substance 5 is not provided. In addition, the second winding 4 of the transformer 1c of the present embodiment is located between the first winding 3a and the second winding 3b, the first magnetic substance 5a is located between the first winding 3a and the second winding 4, and the second magnetic substance 5b is located between the second winding 3b and the second winding 4.

In some embodiments, the bobbin 6c of the transformer 1c may include three winding portions (not shown), i.e., a first winding portion, a second winding portion and a third winding portion, wherein the second winding portion is located between the first winding portion and the third winding portion, the first winding portion is used for winding the first winding 3a, the second winding portion is used for winding the second winding 4, and the third winding portion is used for winding the second winding 3 b. The first magnetic substance 5a is disposed between two partition plates in the bobbin of the present embodiment, and the second magnetic substance 5b is disposed between another two partition plates in the bobbin of the present embodiment, but the present invention is not limited thereto.

Referring to the following table one, it is shown that, according to the difference in the distance X between the first winding and the second winding of the transformer, when the conventional transformer does not have the magnetic conductive material 5 shown in fig. 7, the inductance value of the leakage inductance between the primary side and the secondary side of the conventional transformer is actually tested, and when the transformer 1 shown in fig. 7 includes the magnetic conductive material (the first magnetic conductive material 5a and the second magnetic conductive material 5b), the inductance value of the leakage inductance between the primary side and the secondary side of the transformer 1c is actually tested. As can be seen from the table one, compared to the conventional transformer that adjusts the inductance of the leakage inductance by increasing the distance between the primary side and the secondary side of the transformer, the transformer 1c of the present embodiment increases the inductance of the leakage inductance by disposing the magnetic conductive material between the primary side and the secondary side of the transformer 1c, so that the transformer 1c of the present embodiment can increase the inductance of the leakage inductance by about 35 to 53% under the condition of unchanged size (or the condition of unchanged length of the magnetic core group 2), and therefore, under the same inductance of the leakage inductance, the transformer 1c of the present embodiment can not only decrease the total loss by about 7.2% compared with the conventional transformer without the magnetic conductive material, but also decrease the volume of the transformer 1c by about 15.9% because the length of the magnetic core group 2 is unchanged. Furthermore, as shown in fig. 7, since the transformer 1c of the present embodiment is provided with the magnetic permeable material between the primary side and the secondary side of the transformer 1c, the loss caused by the leakage flux of the transformer 1c of the present embodiment is smaller than that of the conventional transformer without the magnetic permeable material at various distances d (mm) between the transformer and the metal case or other components existing around the transformer, and the loss is reduced by about 40%.

Watch 1

It should be understood that the number and the arrangement positions of the first winding, the second winding and the magnetic conductive material of the transformer of the present invention are not limited to those described in the above embodiments, and different implementation modes may be provided according to actual requirements, and several implementation modes will be illustrated in the following drawings, but in the drawings, the arrangement positions and the number of the first winding, the second winding and the magnetic conductive material are simply presented, and other structures of the transformer are omitted, such as the structure of the bobbin is omitted. Please refer to fig. 8 to 11, which are schematic structural diagrams illustrating respective installation positions and numbers of the first winding, the second winding and the magnetic conductive material in different implementation modes according to the spirit of the transformer of the present invention. As shown in fig. 8 and 11, in some embodiments, as shown in fig. 8, the transformer may comprise two first windings (hereinafter, first winding 3a and second winding 3b from left to right), two second windings (hereinafter, first winding 4a and second winding 4b from left to right), and two magnetic conductive materials (hereinafter, first magnetic conductive material 5a and second magnetic conductive material 5b), wherein the first second winding 4a and the second winding 4b are sequentially located between the first winding 3a and the second winding 3b, the first magnetic conductive material 5a is located between the first winding 3a and the second winding 4a, and the second magnetic conductive material 5b is located between the second winding 3b and the second winding 4 b. In other embodiments, the positions of the second first winding 3b and the second first winding 4b may be exchanged, and after the exchange, whether a magnetic substance is arranged between the first second winding 4a and the second first winding 3b or not may be adopted.

In some embodiments, as shown in fig. 9, the transformer may include three first windings (hereinafter referred to as a first winding 3a, a second winding 3b and a third winding 3c from left to right), two second windings (hereinafter referred to as a first second winding 4a and a second winding 4b from left to right), and two magnetic conductive materials (hereinafter referred to as a first magnetic conductive material 5a and a second magnetic conductive material 5b from left to right), wherein the first second winding 4a is located between the first winding 3a and the second first winding 3b, the second winding 4b is located between the second first winding 3b and the third winding 3c, the first magnetic conductive material 5a is located between the first winding 3a and the first second winding 4a, and the second magnetic conductive material 5b is located between the second winding 4b and the third winding 3 c.

In some embodiments, as shown in fig. 10, the transformer may comprise three first windings (hereinafter referred to as a first winding 3a, a second winding 3b and a third winding 3c from left to right), two second windings (hereinafter referred to as a first second winding 4a and a second winding 4b from left to right), and four magnetic conductive materials 5 (hereinafter referred to as a first magnetic conductive material 5a, a second magnetic conductive material 5b, a third magnetic conductive material 5c and a fourth magnetic conductive material 5d from left to right), wherein the first second winding 4a is located between the first winding 3a and the second first winding 3b, the second winding 4b is located between the second first winding 3b and the third first winding 3c, and the first magnetic conductive material 5a is located between the first winding 3a and the first second winding 4a, the second magnetic conductive material 5b is located between the first second winding 4a and the second winding 3b, the third magnetic conductive substance 5c is located between the second first winding 3b and the second winding 4b, and the fourth magnetic conductive substance 5d is located between the second winding 4b and the third first winding 3 c.

In some embodiments, as shown in fig. 11, the transformer may include three first windings (hereinafter referred to as a first winding 3a, a second winding 3b and a third winding 3c from left to right), two second windings (hereinafter referred to as a first second winding 4a and a second winding 4b from left to right), and two magnetic conductive materials (hereinafter referred to as a first magnetic conductive material 5a and a second magnetic conductive material 5b from left to right), wherein the first second winding 4a is located between the first winding 3a and the second first winding 3b, the second winding 4b is located between the second first winding 3b and the third winding 3c, the first magnetic conductive material 5a is located between the first second winding 4a and the second first winding 3b, and the second magnetic conductive material 5b is located between the second winding 3b and the second winding 4 b.

Please refer to fig. 12, which is a schematic diagram of an assembly structure of a transformer according to a fifth preferred embodiment of the present disclosure. As shown in fig. 12, the structure of the transformer 1d of the present embodiment is similar to the structure of the transformer 1c shown in fig. 7, and therefore similar elements are denoted by the same symbols to represent similar functions and structures, but compared to the case where the core set 2 of the transformer 1c shown in fig. 8 includes a single winding magnetic pillar 22, the core set 2A of the transformer 1d of the present embodiment instead includes a first winding magnetic pillar 22A and a second winding magnetic pillar 22B, so that the core set 2A presents a UU core structure, the first winding magnetic pillar 22A and the second winding magnetic pillar 22B are located between the first core body 20 and the second core body 21, and the first winding magnetic pillar 22A and the second winding magnetic pillar 22B can be respectively provided for winding at least one first winding 3, at least one second winding 4, and at least one magnetic conductive material 5 as described above. Of course, the transformer 1d of the present embodiment may also include a bobbin, which has a structure and a function similar to those of the bobbin of the transformer 1c, and thus, the description thereof is omitted. In other embodiments, at least one first winding 3, at least one second winding 4 and at least one magnetic conductive material 5 may be disposed on the first winding pillar 22A, and no winding or magnetic conductive material is disposed on the second winding pillar 22B; alternatively, at least one first winding 3, at least one second winding 4 and at least one magnetic substance 5 may be disposed on the second winding pillar 22B, and no winding or magnetic substance is disposed on the first winding pillar 22A.

Please refer to fig. 13, which is a schematic diagram of an assembly structure of a transformer according to a sixth preferred embodiment of the present disclosure. As shown in fig. 13, the structure of the transformer 1e of the present embodiment is similar to that of the transformer 1C shown in fig. 8, so similar components are denoted by the same symbols to represent similar functions and structures, but compared to the core set 2 of the transformer 1C shown in fig. 7 which includes a single winding magnetic pillar 22, the core set 2A of the transformer 1d of the present embodiment instead includes a first winding magnetic pillar 22A, a second winding magnetic pillar 22B and a third winding magnetic pillar 22C, so that the core set 2A has a multi-pillar structure, the first winding magnetic pillar 22A, the second winding magnetic pillar 22B and the third winding magnetic pillar 22C are respectively located between the first core body 20 and the second core body 21, and each winding magnetic pillar 22 can be used for winding at least one first winding 3, at least one second winding 4 and at least one magnetic conductive material 5 as described above. Of course, the transformer 1d of the present embodiment may also include a bobbin, which is similar to the bobbin described in the transformer 1c in structure and function.

Of course, the transformer according to the above-mentioned various embodiments may not have a bobbin, and the first winding, the second winding and the magnetic conductive material of the transformer are instead directly wound on the winding magnetic pillars corresponding to the magnetic core groups. Alternatively, in the case of not having the bobbin, in addition to the above-described manner of winding the first winding, the second winding and the magnetic conductive material along the axial direction of the winding magnetic column, one winding may be wound on the outer surface of the winding magnetic column, the magnetic conductive material may be wound on the outer surface of the winding, and the other winding may be wound on the outer surface of the magnetic conductive material, that is, the winding may be wound along the radial direction of the winding magnetic column. In summary, in the embodiments and various modifications mentioned in the foregoing paragraphs, the number of the first winding, the second winding and the magnetic conductive material is not limited, the order in which the first winding, the second winding and the magnetic conductive material are wound on the winding magnetic pole is not limited, and various arrangements and combinations can be adopted.

In summary, the present disclosure provides a transformer, which includes a magnetic conductive material located between a first winding and a second winding, so as to increase an inductance of leakage inductance between the first winding and the second winding by using the magnetic conductive material, and thus compared with a conventional transformer without the magnetic conductive material, the transformer of the present disclosure not only can reduce total loss, but also can reduce volume, and further reduce loss caused by leakage inductance.

Claims (17)

1. A transformer, comprising:

the magnetic core group comprises a first magnetic core body, a second magnetic core body and at least one winding magnetic column, wherein the at least one winding magnetic column is arranged between the first magnetic core body and the second magnetic core body;

at least one first winding wound on the winding magnetic column;

at least one second winding wound on the winding magnetic column; and

at least one magnetic conductive material is arranged between the first winding and the second winding.

2. The transformer according to claim 1, wherein the magnetically permeable substance is a sheet-like structure, or a powder-like structure or a gel-like structure.

3. The transformer of claim 1, wherein the permeability of the magnetically permeable material is greater than or equal to 500H/m and less than or equal to 4000H/m.

4. The transformer of claim 1, wherein the magnetically permeable substance is less than 5mm thick.

5. The transformer of claim 1, wherein the magnetically permeable material is a hollow ring-shaped structure or a C-shaped structure.

6. The transformer of claim 1, further comprising a bobbin assembled with the core assembly, wherein the bobbin comprises a first partition, a first winding portion, a second partition, a third partition, a second winding portion, a fourth partition, and a through hole, the first partition and the second partition are disposed at two opposite sides of the first winding portion and respectively connected to the first winding portion, the first winding portion is used for winding the first winding, the third partition and the fourth partition are disposed at two opposite sides of the second winding portion and respectively connected to the second winding portion, the third partition is disposed adjacent to the second partition, and a space is formed between the third partition and the second partition to form a receiving area for the magnetic material, the second winding portion is used for winding the second winding, the through hole penetrates through the first partition board, the first winding portion, the second partition board, the third partition board, the second winding portion and the fourth partition board and is used for the winding magnetic column of the magnetic core set to penetrate through, so that the first winding, the second winding and the magnetic conductive substance are wound on the winding magnetic column through the winding frame.

7. The transformer of claim 1, further comprising a bobbin assembled with the magnetic core assembly, wherein the bobbin comprises a first partition, a first winding portion, a second winding portion, a through hole and a second partition, wherein the first partition and the second partition are disposed on two opposite sides of the second winding portion and connected to the second winding portion, one end of the first winding portion is connected to the first partition, the first winding portion is used for winding the first winding, the second winding portion is used for winding the second winding, the magnetic material is wound on the first winding portion or the second winding portion and disposed between the first winding and the second winding, the through hole penetrates through the first partition, the second partition, the first winding portion and the second winding portion for the magnetic pillar of the magnetic core assembly to pass through, the first winding, the second winding and the magnetic conductive material are wound on the winding magnetic column through the winding frame.

8. The transformer of claim 7, further comprising a sheet of material wound around the first winding portion or the second winding portion and adjacent to the magnetic conductive material and between the first winding and the second winding.

9. The transformer of claim 8, wherein the material sheet has magnetic permeability or no magnetic permeability, and the material of the material sheet is the same as or different from the material of the magnetic permeable material.

10. The transformer according to claim 8, wherein the sheet of material is a hollow annular structure.

11. The transformer of claim 1, wherein the at least one first winding comprises a first winding and a second winding, the at least one magnetic conductive material comprises a first magnetic conductive material and a second magnetic conductive material, the second winding is disposed between the first winding and the second winding, the first magnetic conductive material is disposed between the first winding and the second winding, and the second magnetic conductive material is disposed between the second winding and the first winding.

12. The transformer of claim 1, wherein the at least one first winding comprises a first winding and a second first winding, the at least one second winding comprises a first second winding and a second winding, the at least one magnetic substance comprises a first magnetic substance and a second magnetic substance, the first second winding and the second winding are disposed between the first winding and the second first winding, the first magnetic substance is disposed between the first winding and the first second winding, and the second magnetic substance is disposed between the second first winding and the second winding.

13. The transformer of claim 1, wherein the at least one first winding comprises a first winding, a second winding and a third winding, the at least one second winding comprises a first second winding and a second winding, the at least one magnetic substance comprises a first magnetic substance and a second magnetic substance, the first second winding is disposed between the first winding and the second winding, the second winding is disposed between the second winding and the third winding, the first magnetic substance is disposed between the first winding and the first winding, and the second magnetic substance is disposed between the second winding and the third winding.

14. The transformer of claim 1, wherein the at least one first winding comprises an A first winding, a B first winding, and a C first winding, the at least one second winding comprises an A second winding and a B second winding, the at least one magnetic conductive material comprises a first magnetic conductive material, a second magnetic conductive material, a third magnetic conductive material and a fourth magnetic conductive material, the first second winding is arranged between the first winding and the second first winding, the second winding is arranged between the second first winding and the third first winding, and the first magnetic substance is arranged between the first winding and the first second winding, the second magnetic substance is located between the first second winding and the second first winding, the third magnetic substance is located between the second first winding and the second winding, and the fourth magnetic substance is located between the second winding and the third first winding.

15. The transformer of claim 1, wherein the at least one first winding comprises a first winding, a second winding and a third winding, the at least one second winding comprises a first second winding and a second winding, the at least one magnetic substance comprises a first magnetic substance and a second magnetic substance, the first second winding is disposed between the first winding and the second winding, the second winding is disposed between the second winding and the third winding, the first magnetic substance is disposed between the first second winding and the second winding, and the second magnetic substance is disposed between the second winding and the second winding.

16. The transformer of claim 1, wherein the winding legs comprise a first winding leg and a second winding leg, the first winding leg and the second winding leg being respectively wound by the at least one first winding, the at least one second winding, and the at least one magnetic conductive material.

17. The transformer of claim 1, wherein the winding magnetic pillar comprises a first winding magnetic pillar, a second winding magnetic pillar and a third winding magnetic pillar, and the first winding magnetic pillar, the second winding magnetic pillar and the third winding magnetic pillar are respectively wound by the at least one first winding, the at least one second winding and the at least one magnetic conductive material.

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