CN117095922A - transformer - Google Patents

Abstract

The application discloses a transformer, which comprises a magnetic core module, a first wire, a second wire, a third wire and a fourth wire, wherein the magnetic core module is provided with a first flange, a second flange, a third flange, a first winding part and a second winding part; the first part of the first wire and the first part of the second wire are wound on the first winding part at the same time, and the second part of the first wire and the second part of the second wire are wound on the second winding part at the same time; the first wire and the second wire form a first coil layer; the third wire and the fourth wire form a second coil layer, and the first coil layer is located between the second coil layer and the first winding part. The transformer can realize the function of the transformer and the function of the common mode filter, integrate the transformer and the common mode filter together, reduce the production cost and save the space of a circuit board.

Description

transformer

Technical field

This application relates to the technical field of electrical components, and in particular to a transformer.

Background technique

Common mode filters usually use ferrite cores and are wound in parallel. Low differential mode noise signal suppresses interference sources, is difficult to deform in high-speed signals, has good noise suppression countermeasures, high common mode noise suppression and low differential mode noise signal suppression. Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is commonly used to increase and decrease voltage, match impedance, and safety isolation.

In related technologies, common mode filters and transformers are usually used as separate devices. When the common mode filter and transformer are two independent components, it will lead to high production costs, and the separation of the two magnetic cores will occupy more space. More board space.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a transformer that can integrate the transformer and the common mode filter, which can reduce production costs and save circuit board space.

The transformer according to the embodiment of the present application includes:

Magnetic core module, the magnetic core module is provided with a first flange, a second flange, a third flange, a first winding part and a second winding part, the first flange and the third The two flanges are connected through the first winding part, and the second flange and the third flange are connected through the second winding part;

first conductor;

The second conductor, the first part of the first conductor and the first part of the second conductor are wound around the first winding part at the same time, the second part of the first conductor and the third part of the second conductor are Two parts are provided on the second winding part at the same time; the first end of the first conductor is connected to the first flange, the first end of the first conductor is connected to the first flange, and the first end of the first conductor is connected to the first flange. The first part and the second part of the first conductor are connected to the second flange, the first part and the second part of the second conductor are connected to the second flange, and the first part of the first conductor is connected to the second flange. The end is connected to the third flange, the end of the second wire is connected to the third flange, and the first wire and the second wire form a first coil layer;

third conductor;

The fourth conductor, the third conductor and the fourth conductor are wound on the first winding part at the same time, the first end of the third conductor is connected to the first flange, and the fourth conductor The first end is connected to the first flange, the end of the third wire is connected to the second flange, the first end of the fourth wire is connected to the second flange, and the third wire is connected to the second flange. The fourth wire forms a second coil layer, and the first coil layer is located between the second coil layer and the first winding portion.

The transformer according to the embodiment of the present application has at least the following beneficial effects: the transformer of the embodiment of the present application includes a magnetic core module, a first conductor, a second conductor, a third conductor and a fourth conductor, and the magnetic core module is provided with a first conductor. Flange, second flange, third flange, first winding part and second winding part, the first flange and the second flange are connected through the first winding part, the second flange and the third flange are connected The orchid is connected through the second winding part; the first part of the first conductor and the first part of the second conductor are wound on the first winding part at the same time, and the second part of the first conductor and the second part of the second conductor are wound on the first winding part at the same time. In the second winding part; the first end of the first conductor is connected to the first flange, the first end of the first conductor is connected to the first flange, and the first part and the second part of the first conductor are connected to the second method. flange, the first part and the second part of the second conductor are connected to the second flange, the end of the first conductor is connected to the third flange, the end of the second conductor is connected to the third flange, the first conductor is connected to the third flange. Two wires form the first coil layer; the third wire and the fourth wire are wound on the first winding part at the same time, the first end of the third wire is connected to the first flange, and the first end of the fourth wire is connected to the first flange , the end of the third conductor is connected to the second flange, the first end of the fourth conductor is connected to the second flange, the third conductor and the fourth conductor form a second coil layer, and the first coil layer is located between the second coil layer and the second coil layer. between one winding part. In the transformer of the embodiment of the present application, a transformer is formed between the first flange and the second flange, and a common-mode filter is formed between the second flange and the third flange. The transformer of the present application can both function as a transformer and It can realize the common mode filter function, integrate the transformer and common mode filter, and only use one magnetic core module, which can reduce production costs and save circuit board space.

According to some embodiments of the present application, first and third soldering pads are respectively provided at both ends of the first flange, and the first flange is also provided with a second soldering pad, and the second soldering pad Located between the first bonding pad and the third bonding pad, the first end of the first conductor and the first end of the second conductor are soldered to the first welding pad, and the first end of the third conductor is soldered to the first welding pad. The first end of the fourth wire is welded to the second bonding pad, and the first end of the fourth wire is welded to the third bonding pad.

According to some embodiments of the present application, fourth and sixth soldering pads are respectively provided at both ends of the second flange, and the second flange is further provided with a fifth soldering pad. The fifth soldering pad Between the fourth bonding pad and the fifth bonding pad, the first part and the second part of the first conductor are soldered to the fifth bonding pad, and the first part of the second conductor and the third The two parts are welded to the fourth bonding pad, and the ends of the third conductor and the end of the fourth conductor are both welded to the sixth welding pad.

According to some embodiments of the present application, seventh and eighth soldering pads are respectively provided at both ends of the third flange, the end of the first wire is welded to the seventh soldering pad, and the second The end of the wire is welded to the eighth pad.

According to some embodiments of the present application, the distance between the first bonding pad and the second bonding pad is greater than the distance between the second bonding pad and the third bonding pad; the fourth bonding pad The distance from the fifth bonding pad is smaller than the distance between the fifth bonding pad and the sixth bonding pad.

According to some embodiments of the present application, a first isolation groove is provided between the first bonding pad and the second bonding pad, and a second isolation groove is provided between the second bonding pad and the third bonding pad. groove.

According to some embodiments of the present application, a third isolation groove is provided between the fourth bonding pad and the fifth bonding pad, and a fourth isolation groove is provided between the fifth bonding pad and the sixth bonding pad. groove.

According to some embodiments of the present application, the winding direction of the first conductor and the winding direction of the second conductor are both the first direction, and the winding direction of the third conductor and the winding direction of the fourth conductor are both the first direction. Assume that the directions are all second directions, and the first direction is opposite to the second direction.

According to some embodiments of the present application, the first direction is a clockwise direction, and the second direction is a counterclockwise direction.

According to some embodiments of the present application, the first direction is a counterclockwise direction, and the second direction is a clockwise direction.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of the drawings

The present application will be further described below in conjunction with the accompanying drawings and examples, wherein:

Figure 1 is a schematic structural diagram of a transformer according to an embodiment of the present application;

Figure 2 is a schematic diagram of the winding of the first conductor and the second conductor according to the embodiment of the present application;

Figure 3 is a schematic diagram of the winding of the third conductor and the fourth conductor according to the embodiment of the present application;

Figure 4 is a schematic diagram of the equivalent circuit of the transformer according to the embodiment of the present application.

Reference signs:

First flange 110; first soldering pad 111; second soldering pad 112; third soldering pad 113; first isolation groove 114; second isolation groove 115;

second flange 120; fourth soldering pad 121; fifth soldering pad 122; sixth soldering pad 123; third isolation groove 124; fourth isolation groove 125;

The third flange 130; the seventh soldering pad 131; the eighth soldering pad 132;

The first conductor 200; the second conductor 300; the third conductor 400; the fourth conductor 500.

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

In the description of this application, it should be understood that the orientation descriptions involved, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. are based on the orientation or positional relationship shown in the drawings, and are only In order to facilitate the description of the present application and simplify the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application.

In the description of this application, several means one or more, plural means two or more, greater than, less than, exceeding, etc. are understood to exclude the original number, and above, below, within, etc. are understood to include the original number. If there is a description of first and second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features. relation.

In the description of this application, unless otherwise explicitly limited, words such as setting, installation, and connection should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in this application in conjunction with the specific content of the technical solution.

In the description of this application, reference to the description of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" is intended to be in conjunction with the description of the embodiment. or examples describe specific features, structures, materials, or characteristics that are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to Figures 1 to 4, an embodiment of the present application provides a transformer, including:

The magnetic core module is provided with a first flange 110, a second flange 120, a third flange 130, a first winding part and a second winding part. The first flange 110 and the second flange are The flange 120 is connected through the first winding part, and the second flange 120 and the third flange 130 are connected through the second winding part;

first conductor 200;

For the second conductor 300, the first part of the first conductor 200 and the first part of the second conductor 300 are wound around the first winding part at the same time, and the second part of the first conductor 200 and the second part of the second conductor 300 are simultaneously wound around the first winding part. In the second winding part; the first end of the first conductor 200 is connected to the first flange 110, the first end of the first conductor 200 is connected to the first flange 110, between the first part and the second part of the first conductor 200 Connected to the second flange 120, the first part and the second part of the second wire 300 are connected to the second flange 120, the end of the first wire 200 is connected to the third flange 130, the end of the second wire 300 is connected to On the third flange 130, the first wire 200 and the second wire 300 form a first coil layer;

third wire 400;

The fourth conductor 500, the third conductor 400 and the fourth conductor 500 are wound around the first winding part at the same time. The first end of the third conductor 400 is connected to the first flange 110, and the first end of the fourth conductor 500 is connected to the first flange 110. Flange 110, the end of the third wire 400 is connected to the second flange 120, the first end of the fourth wire 500 is connected to the second flange 120, the third wire 400 and the fourth wire 500 form a second coil layer, the first The coil layer is located between the second coil layer and the first winding part.

Figure 1 is a schematic structural diagram of a transformer in an embodiment of the present application. Figure 2 is a schematic diagram of the winding of the first conductor 200 and the second conductor 300 in the embodiment of the present application. Figure 3 is a schematic diagram of the third conductor 400 and the fourth conductor in the embodiment of the present application. A schematic diagram of the winding of the wire 500; FIG. 4 is a schematic diagram of the equivalent circuit of the transformer according to the embodiment of the present application. The transformer in the embodiment of the present application at least has the following beneficial effects: the transformer in the embodiment of the present application includes a magnetic core module, a first conductor 200, a second conductor 300, a third conductor 400 and a fourth conductor 500. The magnetic core module is provided with The first flange 110, the second flange 120, the third flange 130, the first winding part and the second winding part. The first flange 110 and the second flange 120 are connected through the first winding part. The second flange 120 and the third flange 130 are connected through the second winding part; the first part of the first wire 200 and the first part of the second wire 300 are wound on the first winding part at the same time, and the second part of the first wire 200 part and the second part of the second wire 300 are simultaneously provided in the second winding part; the first end of the first wire 200 is connected to the first flange 110, and the first end of the first wire 200 is connected to the first flange 110, The first part and the second part of the first conductor 200 are connected to the second flange 120 , the first part and the second part of the second conductor 300 are connected to the second flange 120 , and the end of the first conductor 200 is connected to The end of the second wire 300 is connected to the third flange 130. The first wire 200 and the second wire 300 form the first coil layer; the third wire 400 and the fourth wire 500 are wound around the first coil layer at the same time. In the winding part, the first end of the third wire 400 is connected to the first flange 110, the first end of the fourth wire 500 is connected to the first flange 110, the end of the third wire 400 is connected to the second flange 120, and the fourth The first end of the wire 500 is connected to the second flange 120, the third wire 400 and the fourth wire 500 form a second coil layer, and the first coil layer is located between the second coil layer and the first winding part. In the transformer of the embodiment of the present application, a transformer is formed between the first flange 110 and the second flange 120 , and a common mode filter is formed between the second flange 120 and the third flange 130 . The transformer of the present application can both The transformer function can also realize the common mode filter function. The transformer and common mode filter are integrated, and only one magnetic core module is used, which can reduce production costs and save circuit board space.

It is worth noting that the winding method of the first conductor 200 and the second conductor 300 is double-wound, which can make the length difference between the first conductor 200 and the second conductor 300 smaller and facilitate the transmission of differential mode signals. , can reduce losses.

It should be noted that when producing the transformer according to the embodiment of the present application, since the first coil layer is located between the second coil layer and the first winding part, the first part of the first conductor 200 and the second conductor 300 are first The first part of the first conductor 200 and the second part of the second conductor 300 are simultaneously wound on the first winding part, and then the second part of the first conductor 200 and the second part of the second conductor 300 are simultaneously wound on the second winding part. After completing the first conductor 200 and the second After the conductor 300 is wound, the third conductor 400 and the fourth conductor 500 are simultaneously wound around the first winding part.

It is worth noting that the winding direction of the first conductor 200 and the winding direction of the second conductor 300 are both the first direction, and the winding direction of the third conductor 400 and the fourth conductor 500 are both the second direction. , the first direction is opposite to the second direction. Referring to Figures 2 and 3, the first direction is counterclockwise and the second direction is clockwise. That is, the winding direction of the first conductor 200 and the second conductor 300 is a counterclockwise direction, and the winding direction of the third conductor 400 and the fourth conductor 500 is a clockwise direction.

It should be noted that in other embodiments, the first direction is clockwise and the second direction is counterclockwise.

It can be understood that the first welding pad 111 and the third welding pad 113 are respectively provided at both ends of the first flange 110, and the first flange 110 is also provided with a second welding pad 112, and the second welding pad 112 is located on the first Between the soldering pad 111 and the third soldering pad 113, the first end of the first wire 200 and the first end of the second wire 300 are soldered to the first soldering pad 111, and the first end of the third wire 400 is soldered to the second soldering pad 112. , the first end of the fourth wire 500 is soldered to the third pad 113 .

It can be understood that the fourth soldering pad 121 and the sixth soldering pad 123 are respectively provided at both ends of the second flange 120. The second flange 120 is also provided with a fifth soldering pad 122, and the fifth soldering pad 122 is located on the fourth Between the bonding pad 121 and the fifth bonding pad 122, the first part and the second part of the first conductor 200 are welded to the fifth bonding pad 122, and the first part and the second part of the second conductor 300 are welded to the fourth The bonding pad 121, the end of the third wire 400, and the end of the fourth wire 500 are all soldered to the sixth bonding pad 123.

Specifically, in one embodiment, the first conductor 200 includes a first part, a second part, and an intermediate part between the first part and the second part, and the first part of the first conductor 200 is wound around the first winding part, The second portion of the first conductor 200 is wound around the second winding portion, and the middle portion of the first conductor 200 is soldered to the fifth pad 122 . The second conductor 300 includes a first part, a second part and an intermediate part between the first part and the second part. The first part of the second conductor 300 is wound around the first winding part, and the second part of the second conductor 300 is wound around the first winding part. Provided in the second winding portion, the middle portion of the second wire 300 is welded to the fourth pad 121 .

It can be understood that seventh soldering pads 131 and eighth soldering pads 132 are respectively provided at both ends of the third flange 130 , the end of the first wire 200 is welded to the seventh soldering pad 131 , and the end of the second wire 300 is welded to Eighth pad 132 .

It should be noted that, with reference to Figure 4, in the embodiment of the present application, in Figure 4, each pad serves as an electrode terminal, and the first pad 111 to the second pad between the first flange 110 and the second flange 120 The six pads 123 form a transformer, and the number of turns of the coils from the third to second pads 113 to 112 is equal to the number of turns of the coils from the fifth to fourth pads 122 to 121 , that is, the number of turns of the formed transformer is The turns ratio of the primary coil to the secondary coil is 1:1. In FIG. 4 , a common mode filter is formed between the seventh pad 131 and the second pad 112 .

It can be understood that the distance between the first soldering pad 111 and the second soldering pad 112 is greater than the distance between the second soldering pad 112 and the third soldering pad 113; the distance between the fourth soldering pad 121 and the fifth soldering pad 122 The distance is smaller than the distance between the fifth pad 122 and the sixth pad 123 . Since the first end of the first wire 200 and the first end of the second wire 300 are both soldered to the first pad 111, the first end of the third wire 400 is soldered to the second pad 112, and the first end of the fourth wire 500 is soldered to the third Three bonding pads 113, the first part and the second part of the first conductor 200 are welded to the fifth welding pad 122, the first part and the second part of the second conductor 300 are welded to the fourth welding pad 121, and the third conductor 300 is welded to the fourth welding pad 113. 400 and the end of the fourth wire 500 are both welded to the sixth pad 123, so the distance between the first pad 111 and the second pad 112 is greater than the distance between the second pad 112 and the third pad 113 distance, and the distance between the fourth bonding pad 121 and the fifth bonding pad 122 is smaller than the distance between the fifth bonding pad 122 and the sixth bonding pad 123, the insulation between the first ring layer and the second ring layer can be improved. better.

It can be understood that a first isolation groove 114 is provided between the first bonding pad 111 and the second bonding pad 112 , and a second isolation groove 115 is provided between the second bonding pad 112 and the third bonding pad 113 . The first bonding pad 111 and the second bonding pad 112 are separated by the first isolation groove 114 to insulate the first bonding pad 111 and the second bonding pad 112 . The second bonding pad 112 and the third bonding pad 113 are separated by the second isolation groove 115 to insulate the second bonding pad 112 and the third bonding pad 113 .

It can be understood that a third isolation groove 124 is provided between the fourth bonding pad 121 and the fifth bonding pad 122 , and a fourth isolation groove 125 is provided between the fifth bonding pad 122 and the sixth bonding pad 123 . The fourth bonding pad 121 and the fifth bonding pad 122 are separated by the third isolation groove 124 to insulate the fourth bonding pad 121 and the fifth bonding pad 122 . The fifth bonding pad 122 and the sixth bonding pad 123 are separated by the fourth isolation groove 125 to insulate the fifth bonding pad 122 and the sixth bonding pad 123 .

It should be noted that the shapes of the first isolation groove 114, the second isolation groove 115, the third isolation groove 124 and the fourth isolation groove 125 are all square.

The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various embodiments can be made without departing from the purpose of the present application. Variety. In addition, the embodiments of the present application and the features in the embodiments may be combined with each other without conflict.

Claims (10)

1. A transformer, characterized in that it includes: Magnetic core module, the magnetic core module is provided with a first flange, a second flange, a third flange, a first winding part and a second winding part, the first flange and the third The two flanges are connected through the first winding part, and the second flange and the third flange are connected through the second winding part; first conductor; The second conductor, the first part of the first conductor and the first part of the second conductor are wound around the first winding part at the same time, the second part of the first conductor and the third part of the second conductor are Two parts are provided on the second winding part at the same time; the first end of the first conductor is connected to the first flange, the first end of the first conductor is connected to the first flange, and the first end of the first conductor is connected to the first flange. The first part and the second part of the first conductor are connected to the second flange, the first part and the second part of the second conductor are connected to the second flange, and the first part of the first conductor is connected to the second flange. The end is connected to the third flange, the end of the second wire is connected to the third flange, and the first wire and the second wire form a first coil layer; third conductor; The fourth conductor, the third conductor and the fourth conductor are wound on the first winding part at the same time, the first end of the third conductor is connected to the first flange, and the fourth conductor The first end is connected to the first flange, the end of the third wire is connected to the second flange, the first end of the fourth wire is connected to the second flange, and the third wire is connected to the second flange. The fourth wire forms a second coil layer, and the first coil layer is located between the second coil layer and the first winding portion. 2. The transformer according to claim 1, wherein the first flange is provided with a first welding pad and a third welding pad at both ends, and the first flange is further provided with a second welding pad. , the second pad is located between the first pad and the third pad, and the first end of the first wire and the first end of the second wire are both soldered to the first pad , the first end of the third wire is welded to the second bonding pad, and the first end of the fourth wire is welded to the third bonding pad. 3. The transformer according to claim 2, characterized in that, both ends of the second flange are respectively provided with fourth and sixth soldering pads, and the second flange is further provided with a fifth soldering pad. , the fifth bonding pad is located between the fourth bonding pad and the fifth bonding pad, the first part and the second part of the first conductor are welded to the fifth bonding pad, the third The first part and the second part of the two conductors are soldered to the fourth bonding pad, and the ends of the third conductor and the end of the fourth conductor are soldered to the sixth bonding pad. 4. The transformer according to claim 1, wherein seventh and eighth soldering pads are respectively provided at both ends of the third flange, and the end of the first wire is welded to the seventh soldering pad. The end of the second wire is soldered to the eighth soldering pad. 5. The transformer according to claim 3, wherein the distance between the first soldering pad and the second soldering pad is greater than the distance between the second soldering pad and the third soldering pad. ; The distance between the fourth pad and the fifth pad is smaller than the distance between the fifth pad and the sixth pad. 6. The transformer according to claim 3, wherein a first isolation groove is provided between the first bonding pad and the second bonding pad, and the second bonding pad and the third bonding pad There is a second isolation groove between them. 7. The transformer according to claim 6, wherein a third isolation groove is provided between the fourth bonding pad and the fifth bonding pad, and the fifth bonding pad and the sixth bonding pad There is a fourth isolation groove between them. 8. The transformer according to claim 1, wherein the winding direction of the first conductor and the winding direction of the second conductor are both the first direction, and the winding direction of the third conductor, The winding directions of the fourth conductors are all in the second direction, and the first direction is opposite to the second direction. 9. The transformer according to claim 8, wherein the first direction is clockwise and the second direction is counterclockwise. 10. The transformer according to claim 8, wherein the first direction is a counterclockwise direction, and the second direction is a clockwise direction.