CN115440463A

CN115440463A - Electronic device and connector thereof

Info

Publication number: CN115440463A
Application number: CN202110625121.5A
Authority: CN
Inventors: 郭伟静
Original assignee: Shennan Circuit Co Ltd
Current assignee: Shennan Circuit Co Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-12-06

Abstract

The application discloses an electronic device and a connector thereof, wherein the connector comprises a first circuit board and at least two second circuit boards, and at least two first electromagnetic elements are arranged on the first circuit board; the second circuit boards are fixed on the first circuit board, and each second circuit board is provided with at least one second electromagnetic element; the first circuit board and each second circuit board respectively comprise a substrate, a magnetic core, a transmission line layer and a plurality of conductive parts, wherein the magnetic core, the transmission line layer and the plurality of conductive parts form a first electromagnetic element or a second electromagnetic element arranged on the substrate; each first electromagnetic element is electrically connected with each second electromagnetic element, and the axial direction of the magnetic core in the first electromagnetic element is perpendicular to the axial direction of the magnetic core in the second electromagnetic element. Through the mutual perpendicular of the axis direction of setting up the magnetic core in first electromagnetic component and the second electromagnetic component, can be convenient for the line design of walking of the coil of first electromagnetic component and second electromagnetic component, reduce the mutual interference between the signal.

Description

Electronic device and connector thereof

Technical Field

The present disclosure relates to integrated circuit technologies, and more particularly, to an electronic device and a connector thereof.

Background

Connectors have become an indispensable component in modern devices as a medium for signal transmission and control in modern devices. Most of the electronic devices in the market are equipped with a plurality of connectors to connect to an external control device through a transmission line, so as to receive a control command or connect to another electronic device through a transmission line, so that the plurality of electronic devices can transmit data to each other.

In order to reduce the size of the connector and improve the performance of the connector, the transformer and the filter are usually embedded on the same layer or different layers of the circuit board to reduce the size of the connector. However, in this way, the electromagnetic elements on the transformer and the filter are close to each other, so that the interference between the electromagnetic elements is large.

Disclosure of Invention

The application provides an electronic device and a connector thereof, which are used for solving the technical problem of great signal interference of the connector in the prior art.

In order to solve the technical problem, the application adopts a technical scheme that: provided is a connector including: the first circuit board is provided with at least two first electromagnetic elements; the second circuit boards are fixed on the first circuit board, and each second circuit board is provided with at least one second electromagnetic element; the first circuit board and each of the second circuit boards include: the substrate is provided with an annular containing groove; the magnetic core is accommodated in the annular accommodating groove; the transmission line layers are arranged on two opposite sides of the substrate, and each transmission line layer comprises a plurality of lead patterns which are arranged at intervals along the circumferential direction of the annular accommodating groove; and a plurality of conductive members disposed along an inner circumference and an outer circumference of the magnetic core, for sequentially connecting the conductive wire patterns on the two transmission line layers, thereby forming a coil loop capable of transmitting current around the magnetic core; the magnetic core, the transmission line layer and the conductive pieces form the first electromagnetic element or the second electromagnetic element arranged on the substrate; each first electromagnetic element is electrically connected with each second electromagnetic element, and the axial direction of the magnetic core in the first electromagnetic element is perpendicular to the axial direction of the magnetic core in the second electromagnetic element.

In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided an electronic device comprising an external circuit board and a connector as described hereinbefore, the connector being electrically connected to the external circuit board.

The beneficial effects of the embodiment are as follows: this embodiment can be connected first circuit board and second circuit board perpendicularly through the axis direction mutually perpendicular who sets up the axis direction of the magnetic core among the first electromagnetic component and the magnetic core among the second electromagnetic component, and then the line design of walking of the coil of being convenient for first electromagnetic component and second electromagnetic component reduces the mutual interference between the signal.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a connector according to an embodiment of the present application;

FIG. 2 is an exploded view of the connector of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the first circuit board of FIG. 2;

FIG. 4 is a schematic plan view of the first circuit board of FIG. 1;

fig. 5 is a schematic plan view of the second circuit board in fig. 1;

FIG. 6 is a perspective view of a connector according to another embodiment of the present application;

fig. 7 is an exploded view of the connector of fig. 6.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In one aspect, the present application provides a connector 100, as shown in fig. 1, fig. 1 is a perspective view of the connector in an embodiment of the present application. The connector 100 may generally include a first circuit board 10 and at least two second circuit boards 20, each of the at least two second circuit boards 20 being fixedly disposed on the first circuit board 10.

In this embodiment, as shown in fig. 1, the number of the first circuit boards 10 is one, the number of the second circuit boards 20 is two, and the two second circuit boards 20 are both disposed on the first circuit board 10 and located on the same side of the first circuit board 10, so as to reduce the volume of the connector 100.

Of course, in another embodiment, the number of the first circuit boards 10 may be one, the number of the second circuit boards 20 may be three, four, or five, etc., and a plurality of second circuit boards 20 are disposed on the same side of the first circuit board 10 and connected to the same surface of the first circuit board 10, so as to reduce the volume of the connector 100.

In other optional embodiments, the number of the first circuit boards 10 may also be two, two first circuit boards 10 are stacked, the number of the second circuit boards 20 may be at least two, and at least two second circuit boards 20 may be disposed on the same side of one of the first circuit boards 10, or may be disposed on two opposite sides of two first circuit boards 10, which is not specifically limited in the embodiment of the present application.

Further, as shown in fig. 1, at least two second circuit boards 20 are disposed in parallel at intervals. By the arrangement mode, on one hand, electronic elements such as capacitors and resistors can be conveniently arranged on the surface of the second circuit board 20, so that the space is saved, and the volume is reduced; on the other hand, the lines on the adjacent second circuit boards 20 can be prevented from contacting each other, and short circuit or signal crosstalk can be avoided.

As shown in fig. 1 and 2, fig. 2 is an exploded view of the connector in fig. 1. The first circuit board 10 is provided with at least two first electromagnetic elements 12, each second circuit board 20 is provided with at least one second electromagnetic element 22, and each first electromagnetic element 12 is electrically connected with each second electromagnetic element 22.

Specifically, in the present embodiment, four first electromagnetic elements 12 are disposed on the first circuit board 10, the number of the second circuit boards 20 is two, and two second electromagnetic elements 22 are disposed on each second circuit board 20.

Referring to fig. 2 and 3, fig. 3 is a schematic cross-sectional structure diagram of the first circuit board in fig. 2. The first circuit board 10 includes a substrate 11, a magnetic core 13, a transmission line layer 15, and a plurality of conductive members 17.

In the present embodiment, the substrate 11 is provided with an annular accommodating groove 112; the magnetic core 13 is accommodated in the annular accommodating groove 112; the transmission line layers 15 are disposed on two opposite sides of the substrate 11, and each transmission line layer 15 includes a plurality of conductive line patterns 152 arranged at intervals along the circumferential direction of the annular receiving groove 112; a plurality of conductive members 17 are provided along the inner and outer peripheries of the magnetic core 13 for sequentially connecting the conductive wire patterns 152 on the two transmission line layers 15, thereby forming a coil loop capable of transmitting current around the magnetic core 13. The magnetic core 13, the transmission line layer 15, and the plurality of conductive members 17 constitute a first electromagnetic element 12 disposed on the substrate 11.

The structure of the second circuit board 20 is the same as that of the first circuit board 10, please refer to the description in the above embodiments. The magnetic core 13, the transmission line layer 15, and the plurality of conductive members 17 constitute a second electromagnetic element 22 provided on the substrate 11.

Specifically, each magnetic core 13 is correspondingly accommodated in one annular accommodating groove 112 on the substrate 11, and the cross-sectional shape of the magnetic core 13 is substantially the same as that of the annular accommodating groove 112, so that the magnetic core 13 can be accommodated in the annular accommodating groove 112. The cross section of the magnetic core 13 may be circular, square, or elliptical. Correspondingly, the shape of the annular accommodating groove 112 may be a circular ring shape, a square ring shape, an oval shape, and the like, and the embodiment of the invention is not limited in particular.

In this embodiment, the magnetic core 13 may be formed by stacking a plurality of annular sheets in sequence, or may be formed by winding a long and narrow metal material, or may be formed by sintering a plurality of metal mixtures. The forming method of the magnetic core 13 may be various, and the selection is flexible according to the material, and the application is not limited.

The magnetic core 13 may be an iron core or may be composed of various magnetic metal tea oxides, such as manganese-zinc ferrite, nickel-zinc ferrite, and the like. The manganese-zinc ferrite has the characteristics of high magnetic permeability, high magnetic flux density and low loss, and the nickel-zinc ferrite has the characteristics of extremely high impedance rate, low magnetic permeability and the like. The magnetic core 13 in this embodiment is made of manganese-zinc ferrite by high-temperature sintering.

Further, a plurality of conductive members 17 are provided around both the inner periphery and the outer periphery of magnetic core 13, conductive member 17 provided at the inner periphery of magnetic core 13 being an inner conductive member 17a, and conductive member 17 provided at the outer periphery of magnetic core 13 being an outer conductive member 17b. In this embodiment, the conductive member 17 may be a metal layer. Referring specifically to fig. 3, a plurality of through holes may be formed on substrate 11 at the inner periphery of magnetic core 13 and the outer periphery of magnetic core 13, and then a conductive layer may be formed on the inner walls of the through holes by, for example, plating, coating, or the like. The material of the metal layer includes, but is not limited to, copper, aluminum, iron, nickel, gold, silver, platinum group, chromium, magnesium, tungsten, molybdenum, lead, tin, indium, zinc, or an alloy thereof, and the like.

In another embodiment, the conductive member 17 may be a metal pillar. For example, a plurality of through holes may be first formed on substrate 11 located at the inner periphery of magnetic core 13 and the outer periphery of magnetic core 13, and then metal posts may be inserted in the through holes. The diameter of the metal pillar is smaller than or equal to the diameter of the through hole in which the metal pillar is located, and the material of the metal pillar is the same as that of the metal layer in the previous embodiment, which is not described herein again.

As shown in fig. 3, in the present embodiment, two transmission line layers 15 are respectively disposed on two opposite sides of the substrate 11. The transmission line layer 15 may be made of a metal material. The metal material used to form the transmission line layer 15 includes, but is not limited to, copper, aluminum, iron, nickel, gold, silver, platinum group, chromium, magnesium, tungsten, molybdenum, lead, tin, indium, zinc, or any alloy thereof, and the like.

With continued reference to fig. 2 and 3, each transmission line layer 15 includes a plurality of conductor patterns 152 (shown in fig. 4) thereon. Each of the conductive line patterns 152 is connected across a corresponding one of the inner conductive members 17a and one of the outer conductive members 17b, and has one end electrically connected to the inner conductive member 17a and the other end electrically connected to the outer conductive member 17b. Accordingly, the inner conductor 17a and the outer conductor 17b sequentially connect the wire patterns 152 on the transmission line layers 15 located at opposite sides of the substrate 11, thereby forming a coil loop capable of surrounding the magnetic core 13.

Specifically, the coil loop includes a plurality of turns of coils connected in sequence. In the present embodiment, each turn of the coil includes an inner conductor 17a, a wire pattern 152 on one side of the substrate 11, an outer conductor 17b, a wire pattern 152 on substantially the other side, and a next inner conductor 17a connected in this order.

Wherein the number of coil loops wound around each magnetic core 13 may be one or more. For example, when the number of coil loops is one, an inductance element is formed. When the number of coil loops is plural, a transformer or a filter is formed.

Further, the coil loop wound around each magnetic core 13 is not completely closed, but is opened in the middle to form an input terminal from which a signal enters the coil loop and an output terminal from which the signal passes through the coil loop and is then output.

Further, in the present embodiment, as shown in fig. 2 and 3, the axial direction of magnetic core 13 in first electromagnetic element 12 and the axial direction of magnetic core 13 in second electromagnetic element 22 are perpendicular to each other.

Specifically, the axial direction of the magnetic core 13 in the first electromagnetic element 12 is parallel to the normal direction of the plane on which the first circuit board 10 is located, i.e., the X direction shown in fig. 2. The axial direction of the magnetic core 13 in the second electromagnetic element 22 is parallel to the normal direction of the plane on which the second circuit board 20 is located, i.e., the Y direction shown in fig. 2. In this embodiment, the axial direction of the magnetic core 13 in the first electromagnetic element 12 is perpendicular to the axial direction of the magnetic core 13 in the second electromagnetic element 22, so that the first circuit board 10 can be perpendicularly connected to the second circuit board 20, the coil routing design of the first electromagnetic element 12 and the coil routing design of the second electromagnetic element 22 are facilitated, and the mutual interference between signals is reduced.

In this embodiment, please refer to fig. 4 and fig. 5, wherein fig. 4 is a schematic plan view of the first circuit board in fig. 1, and fig. 5 is a schematic plan view of the second circuit board in fig. 1. The first electromagnetic component 12 disposed on the first circuit board 10 may be a transformer and the second electromagnetic component 22 disposed on the second circuit board 20 may be a filter. The transformer and the filter are different in that the winding manner of the coil loop wound around the magnetic core 13 is different, and the conductor patterns 152 on the transformer and the filter can be divided into a plurality of groups, but in the transformer, the number of the conductor patterns 152 in each group is at least two, and in the filter, the number of the conductor patterns 152 in each group is two.

In the present embodiment, as shown in fig. 4 and 5, the transformer includes two coil loops wound around the magnetic core 13, each coil loop having one input end and one output end; the filter also comprises two coil loops wound around the magnetic core 13, each coil loop having an input and an output.

In the embodiment, the second circuit board 20 is electrically connected to the first circuit board 10, and actually, the second electromagnetic element 22 disposed on the second circuit board 20 is electrically connected to the first electromagnetic element 12 disposed on the first circuit board 10.

Specifically, in the present embodiment, each transformer is electrically connected to a corresponding filter, and a set of electromagnetic elements can be formed by electrically connecting one transformer and one filter.

Wherein one coil loop in each transformer may be electrically connected with one coil loop in a corresponding one of the filters. Specifically, the output terminal of the transformer may be electrically connected to the input terminal of the filter, whereby the input terminal of the transformer, the coil in the transformer, the output terminal of the transformer, the input terminal of the filter, the coil in the filter, and the output terminal of the filter may form one signal transmission line. A transformer and a filter electrically connected may form two signal transmission lines, and the two signal transmission lines may form one signal channel.

It is understood that in another embodiment, the first electromagnetic component 12 and the second electromagnetic component 22 may be reversed, that is, the first electromagnetic component 12 may be a filter and the second electromagnetic component 22 may be a transformer, each transformer being electrically connected to a corresponding filter to form a set of electromagnetic assemblies. The forming method of the electromagnetic assembly in this embodiment is the same as that in the previous embodiment, please refer to the description in the previous embodiment, and the description thereof is omitted here.

Further, at least two first electromagnetic elements 12 disposed on the first circuit board 10 are insulated from each other, and at least two second electromagnetic elements 22 disposed on the same second circuit board 20 are insulated from each other, so that signals transmitted by different electromagnetic elements are independent from each other, and signal interference and crosstalk are avoided.

In the embodiment, the number of the second electromagnetic elements 22 disposed on each second circuit board 20 is equal, so that not only the size of each second circuit board 20 is substantially the same, and the size is smaller, but also the routing design of the second electromagnetic elements 22 is facilitated.

Further, as shown in fig. 4 and 5, in the present embodiment, the first connection terminal 24 is provided on each second circuit board 20, and the second connection terminal 14 is provided on the first circuit board 10. The first connection terminal 24 is electrically connected to an input terminal of the filter, the second connection terminal 14 is electrically connected to an output terminal of the transformer, and the first electromagnetic element 12 and the second electromagnetic element 22 can be electrically connected by electrically connecting the first connection terminal 24 and the second connection terminal 14.

Alternatively, in the present embodiment, the first connection terminals 24 are provided on the side of each second circuit board 20 perpendicular to the transmission line layer 15 and adjacent to the first circuit board 10; the second connection terminals 14 are provided on the main surface of the first circuit board 10.

Specifically, the transmission line layers 15 on the second circuit board 20 are provided on the opposite two main surfaces of the substrate 11, and the first connection terminals 24 are provided on the side surface of the second circuit board 20 connected between the two main surfaces. The main surface is the surface with the largest surface area on the substrate 11, and the transmission line layer 15 is disposed on two opposite main surfaces of the substrate 11, so that the space for wiring can be increased, and the design of the conductive pattern 152 is facilitated.

In the present embodiment, the side surfaces of the second circuit boards 20 are in contact connection with the main surface of the first circuit board 10, so that at least two second circuit boards 20 can be arranged on one first circuit board 10, reducing the volume of the connector 100. Wherein the first connection terminal 24 is disposed on the surface of the second circuit board 20 contacting the first circuit board 10, and the second connection terminal 14 is disposed at the contact connection position of the first circuit board 10 and the second circuit board 20, so that when the second circuit board 20 contacts the first circuit board 10, the first connection terminal 24 and the second connection terminal 14 are in contact alignment with each other, thereby facilitating soldering of the first connection terminal 24 and the second connection terminal 14 for electrical connection.

Alternatively, the first connection terminal 24 is a pad disposed on the second circuit board 20, the second connection terminal 14 is a pad disposed on the first circuit board 10, and the first connection terminal 24 and the second connection terminal 14 are soldered correspondingly. By providing the first connection terminal 24 and the second connection terminal 14 as pads, the mutual contact surfaces of the first circuit board 10 and the second circuit board 20 can be made flat, thereby facilitating the connection of the first circuit board 10 and the second circuit board 20.

In another embodiment, the first connection terminal 24 may also be a conductive pin disposed on the second circuit board 20, and the second connection terminal 14 may be a conductive hole disposed on the first circuit board 10, and the conductive pin is correspondingly inserted into the conductive hole. By providing the conductive pins and the conductive holes on the first circuit board 10 and the second circuit board 20, the contact area between the first connection terminal 24 and the second connection terminal 14 can be increased, thereby improving the stability of the electrical connection.

Further, as shown in fig. 5, in the present embodiment, the second circuit board 20 is a rectangular board, two filters are formed on the second circuit board 20, the second circuit board 20 has four side surfaces connected between two opposite main surfaces, and the first connection terminals 24 are provided on the side surfaces of the second circuit board 20 adjacent to the input and output ends of the coil loop.

Specifically, in the present embodiment, the first connection terminal 24 is provided on the side where the straight distance from the input end and the output end is the smallest, and the first connection terminal 24 is electrically connected to the input end of the filter by the trace formed on the transmission line layer 15. By disposing the first connection terminal 24 on the side close to the input terminal, the length of the wiring can be reduced, thereby reducing the transmission loss of the signal.

Also, in the present embodiment, the second connection terminal 14 may be disposed at a position of the first circuit board 10 adjacent to the input end of the coil loop to reduce the length of the trace for electrically connecting the input end and the second connection terminal 14, thereby reducing the transmission loss of the signal.

Further, referring to fig. 6 and 7, fig. 6 is a schematic perspective view of a connector according to another embodiment of the present application, and fig. 7 is a schematic exploded view of the connector in fig. 6. In the present embodiment, the connector 200 includes a first circuit board 210, a second circuit board 220 and an interposer 230. The interposer 230 is disposed on a side of the first circuit board 210 facing away from the second circuit board 220, and is electrically connected to the first circuit board 210.

The structure of the first circuit board 210 in this embodiment is the same as the structure of the first circuit board 10 in the above embodiment, and the structure of the second circuit board 220 is the same as the structure of the second circuit board 20 in the above embodiment, please refer to the description in the above embodiment, and details are not repeated here.

Further, a third connection terminal 212 is disposed on a side of the first circuit board 210 away from the second circuit board 220, a fourth connection terminal 232 is disposed on a side of the interposer 230 close to the first circuit board 210, and the third connection terminal 212 is electrically connected to the corresponding fourth connection terminal 232. In the present embodiment, by providing the third connection terminal 212 and the fourth connection terminal 232 electrically connected to each other between the first circuit board 210 and the interposer 230, it is possible to facilitate electrical connection of the first circuit board 210 to other components through the interposer 230.

Wherein the third connection terminal 212 may be disposed at a position of the first circuit board 210 near the input and output terminals of the first electromagnetic element. And further, the length of the trace between the third connection terminal 212 and the input and output terminals is reduced, and further, the transmission loss of the line is reduced.

Further, in the present embodiment, the input terminal and the output terminal of the first electromagnetic element are both located on the surface of the first circuit board 210 close to the second circuit board 220, so as to facilitate the first connection terminal to be electrically connected with the input terminal or the output terminal. At this time, a conductive via may be formed on the first circuit board 210, and the third connection terminal 212 may be electrically connected to the input terminal or the output terminal by using the conductive via, thereby reducing a loss of signal transmission.

Alternatively, the third connection terminals 212 are pads disposed on the first circuit board 210, and the fourth connection terminals 232 are pads disposed on the interposer 230. By providing the third connection terminals 212 and the fourth connection terminals 232 as pads, the mutual contact surfaces of the first circuit board 210 and the interposer 230 can be made flat, thereby facilitating the connection of the first circuit board 210 and the interposer 230.

Further, referring to fig. 6 and 7, the connector 200 further includes a first conductive connector 240 disposed on the interposer 230, wherein the first conductive connector 240 is used to electrically connect the interposer 230 with a mating connector (not shown).

Further, the connector 200 further includes a second conductive connector 250, the second conductive connector 250 is disposed on a side of the interposer 230 facing away from the first circuit board 210, and the second conductive connector 250 is used to electrically connect the interposer 230 with an external circuit board (not shown in the figure).

In this embodiment, the first conductive connector 240 is used for being connected with a mating connector in a mating manner, so as to receive a signal input of the mating connector. The input signal enters the first circuit board 210 through the third connection terminal 212 and the fourth connection terminal 232 between the interposer 230 and the first circuit board 210, and is transmitted through a set of electromagnetic components to process the input signal, and the processed signal is transmitted to the interposer 230 again through the third connection terminal 212 and the fourth connection terminal 232, and is transmitted to the external circuit board through the second conductive connector 250. By providing the adapter plate 230, it is on one hand convenient to electrically connect the first circuit board 210 with the first conductive connector 240, and to electrically connect the first circuit board 210 with the second conductive connector 250; on the other hand, the third connection terminal 212 on the first circuit board 210 is redefined to facilitate the connector 200 to be matched with an external circuit board.

Optionally, in this embodiment, the first conductive connector 240 and the second conductive connector 250 are respectively disposed on two sides of the interposer 230 along the arrangement direction of the second circuit board 220.

Specifically, in the present embodiment, as shown in fig. 6 and 7, two second circuit boards 220 are arranged side by side at intervals in the arrow direction shown in the drawing. The middle region of the interposer 230 is used for disposing the fourth connection terminal 232 to electrically connect the interposer 230 with the first circuit board 210, and the first conductive connector 240 and the second conductive connector 250 are disposed at two opposite ends of the interposer 230 along the arrow direction shown in the figure, so that the docking connector and the external circuit board are respectively located at two different sides of the connector 200, thereby avoiding interference between the docking connector and the external circuit board.

The present application further provides an electronic device including an external circuit board and a connector electrically connected to the external circuit board. For the specific structure of the connector, please refer to the structure of the connector in the above embodiments, which is not described herein again.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A connector, comprising:

the first circuit board is provided with at least two first electromagnetic elements; and

the at least two second circuit boards are fixed on the first circuit board, and each second circuit board is provided with at least one second electromagnetic element;

the first circuit board and each of the second circuit boards include:

the substrate is provided with an annular containing groove;

the magnetic core is accommodated in the annular accommodating groove;

the transmission line layers are arranged on two opposite sides of the substrate, and each transmission line layer comprises a plurality of lead patterns which are arranged at intervals along the circumferential direction of the annular accommodating groove; and

a plurality of conductive members disposed along an inner circumference and an outer circumference of the magnetic core, for sequentially connecting the conductive wire patterns on the two transmission line layers, thereby forming a coil loop capable of transmitting current around the magnetic core;

the magnetic core, the transmission line layer and the conductive pieces form the first electromagnetic element or the second electromagnetic element arranged on the substrate;

each first electromagnetic element is electrically connected with each second electromagnetic element, and the axial direction of the magnetic core in the first electromagnetic element is perpendicular to the axial direction of the magnetic core in the second electromagnetic element.

2. The connector according to claim 1, wherein each of the second circuit boards is provided with a first connection terminal on a side surface perpendicular to the transmission line layer and adjacent to the first circuit board; a second connecting terminal corresponding to the first connecting terminal is arranged on the first circuit board; the first connection terminal is electrically connected to the second connection terminal.

3. The connector according to claim 2, wherein the first connection terminal is a land provided on the second circuit board, the second connection terminal is a land provided on the first circuit board, and the first connection terminal and the second connection terminal are soldered correspondingly.

4. The connector according to claim 2, wherein the first connection terminal is provided on a side of the second circuit board adjacent to the input and output ends of the coil loop.

5. The connector according to claim 2, wherein the second connection terminals are provided at positions of the first circuit board adjacent to the input and output terminals of the coil loop.

6. The connector of claim 1, wherein said first electromagnetic components are insulated from one another and said second electromagnetic components are insulated from one another.

7. The connector of claim 1, wherein at least two of said second circuit boards are located on a same side of said first circuit board.

8. The connector of claim 7, wherein at least two of said second circuit boards are spaced apart in parallel.

9. The connector of claim 1, wherein the number of said second electromagnetic components on each of said second circuit boards is equal.

10. The connector of claim 1, wherein the first electromagnetic component is a transformer and the second electromagnetic component is a filter, each of the transformers being electrically connected to a corresponding one of the filters to form a set of electromagnetic assemblies.

11. The connector of claim 1, wherein the first electromagnetic component is a filter and the second electromagnetic component is a transformer, each transformer being electrically connected to a corresponding one of the filters to form a set of electromagnetic assemblies.

12. The connector of claim 1, further comprising an interposer disposed on a side of the first circuit board facing away from the second circuit board and electrically connected to the first circuit board.

13. The connector according to claim 12, wherein a side of the first circuit board facing away from the second circuit board is provided with a third connection terminal, and a side of the interposer close to the first circuit board is provided with a fourth connection terminal, and the third connection terminal is electrically connected with the corresponding fourth connection terminal.

14. The connector according to claim 13, wherein the third connection terminal is provided at a position of the first circuit board near an input terminal and an output terminal of the first electromagnetic element.

15. The connector of claim 14, wherein the input and output terminals are located on a side of the first circuit board that is adjacent to the second circuit board; and the first circuit board is also provided with a conductive through hole, and the third connecting terminal is electrically connected with the input end or the output end through the conductive through hole.

16. The connector according to claim 13, wherein the third connection terminal and the fourth connection terminal are pads provided on the first circuit board and the interposer.

17. The connector of claim 12, further comprising a first electrically conductive connector disposed on the interposer, the first electrically conductive connector configured to electrically connect the interposer with a mating connector.

18. The connector of claim 17, further comprising a second conductive connector disposed on a side of the interposer facing away from the first circuit board, the second conductive connector configured to electrically connect the interposer to an external circuit board.

19. The connector according to claim 18, wherein the first conductive connector and the second conductive connector are respectively disposed on two sides of the interposer along the arrangement direction of the second circuit board.

20. An electronic device comprising an external circuit board and a connector according to any one of claims 1-19, said connector being electrically connected to said external circuit board.