CN213519535U - Transformer - Google Patents

Abstract

The application provides a transformer, through being equipped with first facade and second facade at least on the periphery at the transformer body, and make first facade and second facade be in different planes, the primary side pin sets up on first facade, the secondary side pin sets up on the second facade, just also go out the foot with primary side pin and secondary side pin respectively on two not coplanar facades, realize the insulation distance between primary side pin and the secondary side pin more easily, satisfy the local demand of pin among the small-size many pin transformer, help reducing the size and the occupation space of transformer, can be convenient for simultaneously other circuit part and transformer's setting and being connected, realize the high density overall arrangement of circuit part more easily.

Description

Transformer

Technical Field

The application relates to the technical field of power electronics, in particular to a transformer.

Background

With the development of production technology, the application of power electronic technology has been deepened into various aspects of industrial production and social life, and the power conversion technology has a wide application prospect as one of the bases of the research of the power electronic technology, wherein a transformer is a device for converting alternating voltage, current and impedance, and a high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency and is one of the core components in a power electronic power converter.

At present, a transformer generally includes a transformer main body and a circuit board, wherein the transformer main body includes a magnetic core, a primary winding and a secondary winding, the primary winding and the secondary winding are wound on the magnetic core, the secondary winding is arranged around an outer periphery of the primary winding, the primary winding has a first primary leg and a second primary leg, and the secondary winding has a first secondary leg and a second secondary leg. The transformer main part sets up on PCB (Printed Circuit Board) Board, punches on the PCB Board, makes first primary side pin, first secondary pin, the former limit pin of second and the vice limit pin of second pass the hole and weld on the PCB Board to realize being connected of transformer and other Circuit part.

However, because the primary side pin and the secondary side pin require a large insulation distance, the primary side pin and the secondary side pin are led out from the same PCB, and there may not be enough board area in the transformer with small size and high-density circuit components, which is not favorable for the layout of the transformer with small size and high-density circuit components.

SUMMERY OF THE UTILITY MODEL

The application provides a transformer has solved the former vice limit pin of current transformer and has gone out the problem that the foot is unfavorable for transformer small-size and circuit part high density overall arrangement to set up in same bottom surface.

An embodiment of the present application provides a transformer, including: the transformer comprises a transformer body, a first winding and a second winding, wherein the transformer body comprises a primary winding and a secondary winding, a primary pin is arranged on the primary winding, and a secondary pin is arranged on the secondary winding;

the transformer comprises a transformer body and is characterized in that at least a first vertical face and a second vertical face are arranged on the periphery of the transformer body, the first vertical face and the second vertical face are located in two different planes, a primary side pin is arranged on the first vertical face, and a secondary side pin is arranged on the second vertical face. The primary side pin and the secondary side pin are respectively arranged on the vertical surfaces of two different surfaces of the first vertical surface and the second vertical surface, so that the insulation distance between the primary side pin and the secondary side pin can be realized more easily, the local requirements of the pins in the small-size multi-pin transformer can be met, meanwhile, the arrangement and connection of other circuit components and the transformer can be facilitated, and the high-density layout of the circuit components can be realized more easily.

In a possible implementation manner, the transformer body includes at least two sub-transformers, each sub-transformer includes at least one primary winding and one secondary winding;

the primary windings of at least two of the sub-transformers are connected in series, and the first vertical surface is provided with two primary pins, namely a first pin and a second pin. Namely, a plurality of primary windings of a plurality of sub-transformers are connected in series, and only two primary pins are led out and arranged on the first vertical surface, so that the number of holes needed by the pins of the primary windings can be reduced, and simultaneously, the impedance caused by the pins can be reduced.

In a possible implementation manner, each secondary winding includes two secondary pins, and the plurality of secondary pins are all arranged on the second vertical surface.

In a possible implementation manner, a third vertical surface is further arranged on the periphery of the transformer body, and the third vertical surface, the first vertical surface and the second vertical surface are in different planes;

each secondary winding comprises two secondary pins, part of the secondary pins are arranged on the second vertical surface, and part of the secondary pins are arranged on the third vertical surface. The plurality of secondary side pins are respectively arranged on the second vertical surface and the third vertical surface, and the third vertical surface and the second vertical surface are arranged on different planes from the first vertical surface, so that the insulation distance between the primary side pin and the secondary side pin can be realized more conveniently, and meanwhile, the high-density layout of circuit parts can be realized more easily by the added third vertical surface.

In a possible implementation manner, the primary windings of at least two of the sub-transformers are formed by winding the same primary winding, the initial end of the primary winding forms the first pin, and the terminal end of the primary winding forms the second pin. Namely, the primary windings are formed by winding the same primary winding, so that the series connection of the primary windings is realized, and the first vertical surface of the transformer is only provided with two primary side pins.

In one possible implementation manner, each primary winding is formed by winding one primary winding, a plurality of primary windings are connected in series, and in two primary windings connected in series, the tail end of one primary winding is connected with the initial end of the other primary winding;

the initial end of one of the primary windings forms the first pin, and the tail end of the other primary winding forms the second pin. Namely, after the primary windings are respectively formed by winding the respective primary windings, the primary windings are connected in series, so that only two primary pins are arranged on the first vertical surface of the transformer. Compared with the mode that a plurality of primary windings are wound through one primary winding, the method has higher realizability and is convenient to produce.

In a possible implementation manner, the transformer body further includes a magnetic core, and the primary winding and the secondary winding of each sub-transformer are wound around the magnetic core. The plurality of sub-transformers are integrated on the magnetic core, so that the size of the transformer is reduced, and the occupied space of the transformer is further reduced.

In a possible implementation manner, the transformer body further includes at least two magnetic cores, and the primary winding and the secondary winding of the at least two sub-transformers are respectively wound around the at least two magnetic cores. That is, each sub-transformer has a magnetic core, and the primary winding and the secondary winding of the sub-transformer are wound on the respective magnetic core, so that the winding molding of the primary winding and the secondary winding is facilitated, and the production is facilitated.

In a possible implementation manner, the first vertical surface is perpendicular to the winding center line of the primary winding, and the second vertical surface is perpendicular to the first vertical surface. The winding center line of the primary winding can be specifically the axis of the magnetic core, the primary winding is wound around the center line, the first vertical face is perpendicular to the winding center line, the second vertical face is perpendicular to the first vertical face, namely the second vertical face is parallel to the winding center line, and the secondary side pins are arranged on the second vertical face.

In a possible implementation manner, a preset interval is provided between the first vertical surface and the transformer body, and between the second vertical surface and the transformer body. Therefore, an air duct can be reserved between the transformer body and the first vertical surface and/or between the transformer body and the second vertical surface, namely, a heat dissipation gap is reserved between the primary winding and the secondary winding of the transformer and the first vertical surface and/or the second vertical surface, and heat dissipation of the transformer winding and the circuit board is facilitated.

In a possible implementation manner, the transformer further includes a support frame, the support frame is respectively located between the first vertical surface and the transformer body and between the second vertical surface and the transformer body, the support frame is used for supporting the first vertical surface and the second vertical surface, the secondary side pin passes through the support frame and then is disposed on the second vertical surface, and the primary side pin passes through the support frame and then is disposed on the first vertical surface. The support frame plays the supporting role on the one hand to make between first facade and the transformer body, remain between second facade and the transformer body and have the heat dissipation interval, on the other hand, former limit pin and vice limit pin can pass the support frame setting respectively on first facade and second facade, and the support frame can play direction and fixed action to former vice limit pin, is convenient for draw forth the setting of former vice limit pin.

The transformer comprises a transformer body, and is characterized by further comprising at least two circuit boards, wherein the circuit boards are arranged on the periphery of the transformer body, the circuit boards form the first vertical face and the second vertical face, and the primary side pin and the secondary side pin respectively penetrate through the circuit boards and are arranged on the circuit boards.

An embodiment of the present application further provides a power converter including any one of the transformers described above. The transformer body of the transformer is at least provided with a first vertical face and a second vertical face on the periphery, the first vertical face and the second vertical face are located on different planes, a primary side pin is arranged on the first vertical face, a secondary side pin is arranged on the second vertical face, and the primary side pin and the secondary side pin are led out from the vertical faces of two different faces, so that the insulation distance between the primary side pin and the secondary side pin is easier to realize, the size of the transformer is reduced, meanwhile, the arrangement and connection of circuit components and the transformer are facilitated, and the high-density layout of the circuit components in the power converter is easier to realize.

Drawings

Fig. 1 is a schematic front view structure diagram of a transformer according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a back view of a transformer according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a transformer body according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another transformer body according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of an arrangement of a primary winding and a secondary winding in a transformer according to an embodiment of the present application;

fig. 6 is a schematic partial-split structure diagram of a transformer body according to an embodiment of the present disclosure;

fig. 7 is a schematic circuit diagram of a primary winding and a secondary winding in a transformer body according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another transformer according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram illustrating an arrangement of a transformer body, a second vertical surface and a third vertical surface according to an embodiment of the present application;

fig. 10 is a schematic diagram of another arrangement of the transformer body and the second and third vertical surfaces according to the embodiment of the present application;

fig. 11 is a schematic side view of another transformer according to an embodiment of the present disclosure.

Description of reference numerals:

100-a transformer; 10-a transformer body; 11-a sub-transformer;

111-a primary winding; 1111-primary side pin; 1111 a-first pin;

1111 b-a second pin; 112-secondary winding; 1121-secondary side pin;

12-a magnetic core; 20-a first facade; 30-a second facade;

40-third vertical surface; 50-a support frame; 51-a support frame;

52-supporting feet; 60-interval.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

The high-frequency transformer is one of the core components in the power electronic power converter, two ends of the winding of the transformer are pulled out in a pin mode, for electrical connection with an external circuit, a transformer generally includes a transformer body, which is disposed on a printed circuit board, that is, the circuit board is located below the transformer main body and can be used as the bottom surface of the transformer, the transformer main body can comprise a magnetic core, and a primary winding and a secondary winding wound on the magnetic core, the secondary winding can be located on the periphery of the primary winding, the number of the primary winding and the secondary winding of the transformer main body can be multiple, each primary winding has two primary pins, each secondary winding has two secondary pins, holes can be punched in the circuit board on the bottom surface, so that the primary side pin and the secondary side pin penetrate through the holes and are welded on the circuit board, and the connection between the transformer and other circuit components in the power electronic power converter is realized.

When the primary pin and the secondary pin are both led out from the circuit board on the bottom surface, the number of pins on the circuit board is large, and the insulation distance between the primary pin and the secondary pin is required to be more than 8mm, so that in a transformer with small size and/or high-density distribution of parts, the area of the board may not be enough to meet the insulation distance, and the insulation distance is difficult to realize, thereby being not beneficial to the requirement of the transformer for realizing the high-density distribution of the small size and the circuit parts.

Based on the technical problem, the embodiments of the present application provide a transformer, which can be used in a power electronic power converter. The transformer is characterized in that at least a first vertical face and a second vertical face are arranged on the periphery of the transformer body, the first vertical face and the second vertical face are located on different planes, a primary side pin is arranged on the first vertical face, and a secondary side pin is arranged on the second vertical face, namely, the primary side pin and the secondary side pin are led out of the vertical faces of two different faces, so that the insulation distance between the primary side pin and the secondary side pin can be realized more easily, the local requirements of the pins in a small-size multi-pin transformer are met, the size and the occupied space of the transformer are reduced, meanwhile, the arrangement and connection of other circuit components and the transformer can be facilitated, and the high-density layout of the circuit components can be realized more easily.

The following describes the structure of the transformer provided in the embodiments of the present application in detail with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present application provides a transformer 100, including: the transformer comprises a transformer body 10, wherein the transformer body 10 comprises a primary winding 111 and a secondary winding 112, the primary winding 111 has a primary pin 1111 thereon, and the secondary winding 112 has a secondary pin 1121 thereon (as shown in fig. 3 and 7).

As shown in fig. 1 and 2, at least a first vertical surface 20 and a second vertical surface 30 are provided on the outer periphery of the transformer body 10, wherein the first vertical surface 20 and the second vertical surface 30 may be circuit boards provided on the outer periphery of the transformer body 10, or the first vertical surface 20 and the second vertical surface 30 may be two surfaces of a housing included in the transformer body 10 itself.

Referring to fig. 1 and 2, a first vertical surface 20 and a second vertical surface 30 are located in two different planes, a primary side pin 1111 is disposed on the first vertical surface 20, and a secondary side pin 1121 is disposed on the second vertical surface 30, as shown in fig. 3, that is, the primary side pin 1111 and the secondary side pin 1121 are out of the two different planes, compared with the case where the primary side pin 1111 and the secondary side pin 1121 are located in the same plane, the insulation distance between the primary side pin 1111 and the secondary side pin 1121 can be more easily achieved, which is beneficial to meeting the requirement of pin layout in a small-sized transformer, and is convenient for reducing the occupied space of the transformer 100, and is especially suitable for the layout of multiple pins of the small-sized transformer. Meanwhile, the primary side pin 1111 and the secondary side pin 1121 are located in different planes, which facilitates the arrangement and connection of other circuit components with the transformer 100, and facilitates the realization of high-density layout of circuit components in the power converter.

The transformer body 10 includes at least two sub-transformers 11, each sub-transformer 11 includes at least one primary winding 111 and one secondary winding 112, as shown in fig. 4, the transformer body 10 may include a plurality of sub-transformers 11, in this embodiment, the transformer body 10 includes two sub-transformers 11 as an example, where each sub-transformer 11 may include at least one primary winding 111 and one secondary winding 112.

The transformer 100 may further include a magnetic core 12, and each of the sub-transformers 11 may include a primary winding 111 and a secondary winding 112, the primary winding 111 and the secondary winding 112 are wound on the magnetic core 12, and the secondary winding 112 is located on an outer periphery of the primary winding 111.

Alternatively, each sub-transformer 11 may include a plurality of primary windings 111 and a plurality of secondary windings, for example, the sub-transformer 11 may include two primary windings 111 and one secondary winding 112, wherein one primary winding 111 is wound on the magnetic core 12, the secondary winding 112 is located on the outer periphery of the primary winding 111, another primary winding 111 is located on the outer periphery of the secondary winding 112, and so on.

In the embodiment of the present application, referring to fig. 5 to 7, the primary windings 111 of at least two sub-transformers 11 are connected in series, and the first vertical surface 20 has two primary pins 1111a and 1111b, that is, the primary windings 111 are connected in series, so that only two primary pins 1111 can be led out and disposed on the first vertical surface 20 (as shown in fig. 2), the number of openings required for the outgoing pins of the primary windings 111 can be reduced, and simultaneously, the impedance caused by the outgoing pins can be reduced.

Each secondary winding 112 includes two secondary pins 1121, and the plurality of secondary pins 1121 are disposed on the second vertical surface 30. Referring to fig. 5 and 6, each sub-transformer 11 has a secondary winding 112, and each secondary winding 112 has two secondary pins 1121, taking the example that the transformer body 10 includes two sub-transformers 11, the transformer body 10 has four secondary pins 1121, and referring to fig. 2, all of the four secondary pins 1121 may be disposed on the second vertical surface 30.

Or, in a possible implementation manner, referring to fig. 8, a third vertical surface 40 is further disposed on the outer periphery of the transformer body 10, the third vertical surface 40 is located in a different plane from the first vertical surface 20 and the second vertical surface 30, a part of the secondary side pin 1121 is disposed on the second vertical surface 30, and a part of the secondary side pin 1121 is disposed on the third vertical surface 40, so that the insulation distance between the primary side pin 1111 and the secondary side pin 1121 can be more conveniently achieved, and meanwhile, the increased third vertical surface 40 also facilitates high-density layout of circuit components.

It should be noted that, in addition to the first vertical surface 20, the second vertical surface 30 and the third vertical surface 40, a plurality of vertical surfaces for leading out pins may be provided on the outer periphery of the transformer body 10, so that the secondary side pins 1121 of the plurality of secondary side windings 112 may be distributed on different or the same vertical surfaces.

There are various specific embodiments for connecting the primary windings 111 of the sub-transformers 11 in series, for example, in one possible implementation, the primary windings 111 of at least two sub-transformers 11 are formed by winding the same primary winding, the initial end of the primary winding forms the first pin 1111a, and the terminal end of the primary winding forms the second pin 1111b, that is, the primary windings 111 are formed by winding the same primary winding.

Specifically, referring to fig. 6 and 7, taking two sub-transformers 11 as an example, each sub-transformer 11 includes two primary windings and a secondary winding 112, wherein one primary winding (not shown) is wound around the magnetic core 12, the secondary winding 112 is on the outer periphery of the primary winding, and the other primary winding 111 is wound on the outer periphery of the secondary winding 112. The primary winding is firstly wound on the magnetic core 12 positioned on the left side to form the primary winding 111 on the left side, and then the primary winding 111 on the right side is continuously wound on the magnetic core 12 on the right side without disconnection, as shown in fig. 3, the initial end of the primary winding is led out on the first vertical surface 20 to form the first pin 1111a, and the tail end of the primary winding after winding is led out on the first vertical surface 20 to form the second pin 1111b, so that the series connection among a plurality of primary windings 111 is realized, and the first vertical surface 20 of the transformer 100 is only provided with two primary pins 1111.

Or, in another possible implementation manner, each primary winding 111 is formed by winding one primary winding, that is, includes a plurality of primary windings, the plurality of primary windings are connected in series, specifically, the tail end of one primary winding of the two primary windings connected in series is connected to the initial end of the other primary winding, and finally, after the plurality of primary windings are connected in series, the initial end of one primary winding is not connected and is led out to form the first pin 1111a, and the tail end of the other primary winding is not connected and is led out to form the second pin 1111 b.

For example, the transformer body comprises two sub-transformers, each sub-transformer comprises a primary winding, the two primary windings are respectively formed by two primary windings of a first primary winding and a second primary winding, the tail end of the first primary winding is connected with the initial end of the second primary winding, so that the first primary winding and the second primary winding are connected in series, the initial end of the first primary winding is led out to form a first pin, and the tail end of the second primary winding is led out to form a second pin. That is, the primary windings 111 are connected in series after being connected to each other, so that only two primary side pins 1111 are provided on the first vertical surface 20 of the transformer 100. Compared with the case that a plurality of primary windings 111 are formed by winding one primary winding, the primary winding groups are respectively formed by the primary windings and then connected in series, so that the method has higher realizability and is convenient to produce.

Specifically, the first vertical surface 20 may be a printed circuit board, and in the primary windings connected in series, the tail end of one primary winding and the initial end of another primary winding may be both led to the circuit board, so that the connection between the two is realized through the circuit board.

The transformer body 10 may further include a magnetic core 12, the primary winding 111 and the secondary winding 112 of each sub-transformer 11 are wound on the magnetic core 12, that is, a plurality of sub-transformers 11 may be integrated on one magnetic core 12, and the primary windings 111 and the secondary windings 112 of a plurality of sub-transformers 11 are wound on the same magnetic core 12, which is helpful for reducing the volume of the transformer 100, and further reducing the occupied space of the transformer 100.

Or, the transformer body 10 may further include at least two magnetic cores 12, and the primary winding 111 and the secondary winding 112 of the at least two sub-transformers 11 are respectively wound on the at least two magnetic cores 12, that is, each sub-transformer 11 has one magnetic core 12, and the primary winding 111 and the secondary winding 112 of the sub-transformer 11 are wound on the respective magnetic core 12, which may facilitate the winding of the primary winding 111 and the secondary winding 112, and facilitate the production.

In this embodiment, the first vertical surface 20 may be perpendicular to the winding center line of the primary winding 111, the winding center line of the primary winding 111 may specifically be an axis of the magnetic core 12, as shown in fig. 6 and 7, the primary winding is wound around the center line, the first vertical surface 20 is perpendicular to the winding center line, the second vertical surface 30 is perpendicular to the first vertical surface 20, that is, the second vertical surface 30 is parallel to the winding center line, and the secondary pin 1121 is disposed on the second vertical surface 30, so that the initial end and the terminal end of the secondary winding 112 may be directly led out from the second vertical surface 30 without pulling a wire to the first vertical surface 20, and compared with the existing primary pin 1111 and the secondary pin 1121 being led out on the same surface, the lead-out pin is facilitated, no up-down pulling wires are needed, the lead-out distance of the winding is reduced, and the production and the appearance are convenient.

In addition, as shown in fig. 9 and 10, the third vertical surface 40 may be disposed parallel to the second vertical surface 30, that is, the third vertical surface 40 is disposed opposite to the second vertical surface 30, which may also facilitate direct leading out of the secondary side pin 1121 of the secondary side winding 112, and reduce the winding lead routing distance without pulling up and down wires.

Referring to fig. 11, a preset gap 60 (not shown) is provided between the first vertical surface 20 and the transformer body 10, and a preset gap 60 may also be provided between the second vertical surface 30 and the transformer body 10, so that an air duct can be left between the transformer body 10 and the first vertical surface 20 and between the second vertical surface 30, that is, a heat dissipation gap is left between the primary and secondary windings 112 of the transformer 100 and the circuit board, which is beneficial to heat dissipation of the windings and the circuit board of the transformer 100.

The width of the preset space 60 (the distance between the first vertical surface 20 or the second vertical surface 30 and the transformer body 10) may be greater than 2mm and less than 5 mm.

Specifically, as shown in fig. 11, the transformer 100 further includes a support frame 50, the support frame 50 may be disposed between the first vertical surface 20 and the transformer body 10, the support frame 50 may also be disposed between the second vertical surface 30 and the transformer body 10, and the support frame 50 is used for supporting the first vertical surface 20 and the second vertical surface 30, so that a preset interval 60 is provided between the first vertical surface 20 and the transformer body 10, and a preset interval 60 is also provided between the second vertical surface 30 and the transformer body 10.

The secondary side pin 1121 is disposed on the second vertical surface 30 after penetrating through the support frame 50, and the primary side pin 1111 is disposed on the first vertical surface 20 after penetrating through the support frame 50. The support frame 50 serves as a support for maintaining a heat dissipation space 60 between the first vertical surface 20 and the transformer body 10 and between the second vertical surface 30 and the transformer body 10.

On the other hand, the primary side pin 1111 and the secondary side pin 1121 can respectively penetrate through the support frame 50 to be arranged on the first vertical surface 20 and the second vertical surface 30, and the support frame 50 can guide and fix the original secondary side pin 1121, so that the original secondary side pin 1121 can be conveniently led out.

Referring to fig. 11, taking the example that the supporting frame 50 is disposed between the second vertical surface 30 and the transformer body 10 as an example, the supporting frame 50 may include a supporting leg 52 and a supporting frame 51, the supporting frame 51 may be fixedly connected to the second vertical surface 30, the supporting leg 52 is disposed on a surface of the supporting frame 51 opposite to the transformer body 10, the supporting leg 52 abuts against the transformer body 10, and the supporting frame 51 and the transformer body 10 have the predetermined gap 60 therebetween.

Alternatively, the support frame 51 may be fixedly connected to the transformer body 10, the support leg 52 may be provided on a surface of the support frame 51 opposite to the second vertical surface 30, the support leg 52 may abut against the second vertical surface 30, and the predetermined gap 60 may be provided between the support frame 51 and the second vertical surface 30.

In the embodiment of the present application, the transformer 100 further includes at least two circuit boards, where the circuit boards may be printed circuit boards, the circuit boards are disposed on the periphery of the transformer body 10, one of the circuit boards forms the first vertical surface 20, the other circuit board forms the second vertical surface 30, the first circuit board and the second circuit board are located on different planes, the primary side pin 1111 passes through the first circuit board and is disposed on the first circuit board, and the secondary side pin 1121 passes through the second circuit board and is fixedly disposed on the second circuit board.

Specifically, the first circuit board and the second circuit board are provided with holes, so that the primary side pin 1111 passes through the holes on the first circuit board, and the primary side pin 1111 can be arranged on the first circuit board by welding. Accordingly, the secondary side pin 1121 may pass through an opening of the second circuit board and be fixedly disposed on the second circuit board by soldering.

The transformer 100 may further include a third circuit board disposed on the outer circumference of the transformer body 10, the third circuit board may form a third vertical surface 40, and the first circuit board, the second circuit board, and the third circuit board may be connected by a connector or a printed circuit board with tin fingers.

An embodiment of the present application further provides a power converter including any one of the transformers described above. The periphery of a transformer body of the transformer is at least provided with a first vertical face and a second vertical face, the first vertical face and the second vertical face are located on different planes, a primary side pin is arranged on the first vertical face, a secondary side pin is arranged on the second vertical face, and the primary side pin and the secondary side pin are led out of the vertical faces of two different faces, so that the insulation distance between the primary side pin and the secondary side pin is easier to realize, the size of the transformer is reduced, meanwhile, the arrangement and connection of circuit components and the transformer are facilitated, and the high-density layout of the circuit components in the power converter is easier to realize.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. A transformer, comprising: the transformer comprises a transformer body, a first winding and a second winding, wherein the transformer body comprises a primary winding and a secondary winding, a primary pin is arranged on the primary winding, and a secondary pin is arranged on the secondary winding;

the transformer comprises a transformer body and is characterized in that at least a first vertical face and a second vertical face are arranged on the periphery of the transformer body, the first vertical face and the second vertical face are located in two different planes, a primary side pin is arranged on the first vertical face, and a secondary side pin is arranged on the second vertical face.

2. The transformer of claim 1, wherein the transformer body comprises at least two sub-transformers, each sub-transformer comprising at least one of the primary winding and one of the secondary winding;

the primary windings of at least two of the sub-transformers are connected in series, and the first vertical surface is provided with two primary pins, namely a first pin and a second pin.

3. The transformer of claim 2, wherein each of the secondary windings comprises two secondary legs, each of the secondary legs being disposed on the second elevation.

4. The transformer of claim 2, wherein a third vertical surface is further disposed on the outer periphery of the transformer body, and the third vertical surface is in a different plane from the first vertical surface and the second vertical surface;

each secondary winding comprises two secondary pins, part of the secondary pins are arranged on the second vertical surface, and part of the secondary pins are arranged on the third vertical surface.

5. The transformer according to any of claims 2-4, wherein said primary windings of at least two of said sub-transformers are formed by winding a same primary winding, wherein an initial end of said primary winding forms said first pin and an end of said primary winding forms said second pin.

6. The transformer according to any one of claims 2 to 4, wherein each of the primary windings comprises a primary winding, a plurality of the primary windings are connected in series, and of the two primary windings connected in series, an end of one primary winding is connected to an initial end of the other primary winding;

the initial end of one of the primary windings forms the first pin, and the tail end of the other primary winding forms the second pin.

7. The transformer according to any of claims 2-4, wherein the transformer body further comprises a magnetic core, and the primary winding and the secondary winding of each of the sub-transformers are wound around the magnetic core.

8. The transformer according to any of claims 2-4, wherein said transformer body further comprises at least two magnetic cores, and said primary windings and said secondary windings of at least two of said sub-transformers are wound around at least two of said magnetic cores, respectively.

9. The transformer of any one of claims 1-4, wherein the first vertical surface is perpendicular to a winding center line of the primary winding, and the second vertical surface is perpendicular to the first vertical surface.

10. The transformer according to any one of claims 1 to 4, wherein a predetermined interval is provided between the first vertical surface and the transformer body, and between the second vertical surface and the transformer body.

11. The transformer of claim 10, further comprising a support frame, wherein the support frame is respectively located between the first vertical surface and the transformer body and between the second vertical surface and the transformer body, the support frame is configured to support the first vertical surface and the second vertical surface, the secondary pin is disposed on the second vertical surface after passing through the support frame, and the primary pin is disposed on the first vertical surface after passing through the support frame.

12. The transformer of any one of claims 1-4, further comprising at least two circuit boards disposed on the outer periphery of the transformer body, the circuit boards forming the first elevation and the second elevation, the primary side pin and the secondary side pin each passing through the circuit boards and disposed on the circuit boards.

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