Winding structure, magnetic components and power supply

Abstract

The present application relates to a winding structure, a magnetic component and a power supply. The winding structure includes a connecting portion and two conductive sheets arranged opposite to each other. The conductive sheet includes a main body and a pin. The main body includes a first end and a second end. The first end is connected to the connecting portion, and the second end is connected to the pin. An accommodating space is defined between the connecting portion and the relative main body; wherein, along the installation direction of the winding structure, the height difference between the second end and the connecting portion is greater than or equal to 0, and the total number of connecting portions is equal to the total number of main bodies on each conductive sheet, and both are N, where N is a positive integer. In the winding structure, since different main bodies can be connected through the connecting portion, each main body can be effectively electrically connected to the circuit board through only one pin, thereby reducing the number of solder joints and reducing the difficulty of the wiring design of the circuit board; and since the free end of the pin protrudes from the side surface of the connecting portion away from the accommodating space, the difficulty of connecting the pin to the circuit board is reduced.

Description

Technical Field

[0001] The present application relates to the field of electrical technology, and in particular to a winding structure, a magnetic component and a power supply. Background Art

[0002] In transformers where the secondary winding needs to output a larger current, stamped copper sheets are usually used as the secondary winding to increase the current capacity. Figure 1 to Figure 2 Since the copper sheet A is formed by flat stamping, when two circles of copper sheets A need to be connected in series, it is usually achieved by routing and connecting on the transformer circuit board (also called PCB board). Specifically, each copper sheet A is formed with two pin terminals, namely a first connection end a1 and a second connection end a2. The first connection end a1 and the second connection end a2 are both used to be welded to the PCB board. When two circles of copper sheets A need to be connected in series, the first connection end a1 of one copper sheet A is connected to the second connection end a2 of the other copper sheet A through the PCB board, such as Figure 2 This will not only increase unnecessary solder joints, but also make the routing design of the PCB board more difficult.

[0003] To this end, the related technology proposes a solution of vertical winding of flat wire. For details, please refer to Figure 3 The secondary winding B includes multiple layers of copper sheets A (one layer of copper sheet A is equivalent to one turn of the coil), and the copper sheets A are connected end to end to achieve series connection. Only the first connection end a1 and the second connection end a2 are respectively set on the first and last layers of copper sheets A. In this way, it is only necessary to weld the first connection end a1 and the second connection end a2 to the PCB board, which can not only reduce the number of solder joints, but also reduce the difficulty of the routing design of the PCB board.

[0004] However, the solution of vertical winding of flat wire has an obvious disadvantage, see Figure 3 and Figure 4 , that is, there is no space between the coils of the secondary winding B to place the primary winding C. The primary winding C can only be set on one side of the secondary winding B, and the magnetic field strength at the position where the primary winding C and the secondary winding B are close to each other is relatively strong. According to Ampere's circuit law It can be seen that the magnetic field strength when the primary winding C and the secondary winding B are close to each other is The greater the magnetic field intensity, the greater the eddy current loss generated, which is not conducive to improving the efficiency of the transformer. Summary of the invention

[0005] The embodiments of the present application provide a winding structure, a magnetic component and a power supply to at least partially solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned object, according to the first aspect of the present application, an embodiment of the present application provides a winding structure, the winding structure includes a connecting portion and two conductive sheets arranged opposite to each other, the conductive sheet includes a main body and a pin, the main body includes a first end and a second end, the first end is connected to the connecting portion, the second end is connected to the pin, and an accommodating space is defined between the connecting portion and the opposite main body;

[0007] Among them, along the installation direction of the winding structure, the height difference between the second end and the connecting part is greater than or equal to 0, and the total number of the connecting parts is equal to the total number of the main bodies on each of the conductive sheets, and both are N, where N is a positive integer.

[0008] In some embodiments, the connecting portion includes a first connecting portion and a second connecting portion, and the first end of the main body is connected to the second connecting portion through the first connecting portion; along the installation direction of the winding structure, the height difference between the second end of the main body and the second connecting portion is greater than or equal to 0.

[0009] In some implementations, the pins include a first pin and a second pin, the total number of the first pins is 2, and the total number of the second pins is N-1; wherein the second pin is formed by connecting two adjacent first pins.

[0010] In some embodiments, N=1, the two first pins are respectively connected to the second ends of the two bodies and are located on both sides of the connecting portion; and the two bodies are configured so that current flows in the same direction.

[0011] In some embodiments, N≥2, two adjacent bodies on each conductive sheet are configured so that current flows in opposite directions, and two bodies located opposite to each other on two conductive sheets are configured so that current flows in the same direction.

[0012] In some embodiments, the second pin is disposed between the first pins, adjacent first pins and second pins are respectively located on two of the conductive sheets, and two adjacent second pins are also respectively located on two of the conductive sheets.

[0013] In some embodiments, a mounting through hole is provided on the main body, and the mounting through holes of two relatively positioned main bodies are located in corresponding positions and jointly form an accommodating channel; a gap is also provided on the main body, the mounting through hole is connected to the gap, and the pin and the connecting part are respectively located on both sides of the gap.

[0014] In some embodiments, the connecting portion and two oppositely disposed conductive sheets are integrally formed by stamping and bending.

[0015] In some embodiments, heat collecting holes and / or heat collecting grooves are provided on the pins.

[0016] According to a second aspect of the present application, an embodiment of the present application provides a magnetic component, the magnetic component comprising a winding and two magnetic cores arranged opposite to each other,

[0017] The winding comprises a first winding and a second winding, the first winding is a winding structure as described above, and the second winding is located in the accommodating space;

[0018] The magnetic core includes a cover plate, a winding post and a common post, wherein one end of the winding post and the common post are connected to the cover plate, and the winding post is arranged in a receiving channel, and the receiving channel is formed by two mounting through holes of the main body that are opposite to each other on the two conductive sheets, and the positions of the mounting through holes, the receiving channel and the winding post correspond to each other; wherein the number of the winding posts is N, and the number of the common posts is greater than or equal to 0.

[0019] In some embodiments, the first winding is a primary winding, the second winding is a secondary winding, and the secondary winding is a coil structure; or the first winding is a secondary winding, the second winding is a primary winding, and the primary winding is a coil structure.

[0020] In some embodiments, along the thickness direction of the cover plate, a heat dissipation groove penetrating the cover plate is provided on the side wall of the cover plate.

[0021] According to a third aspect of the present application, an embodiment of the present application provides a power supply, comprising a circuit board and the magnetic component as described above, wherein the magnetic component is electrically connected to the circuit board through the pins.

[0022] The winding structure provided in the embodiment of the present application has the following advantages:

[0023] Firstly, by defining an accommodation space between the connecting portion and the opposite main body, when the winding structure is used as one of the primary winding and the secondary winding, and the other of the primary winding and the secondary winding is arranged in the accommodation space, the magnetic field strength at the position where the primary winding and the secondary winding are close to each other can be significantly reduced, thereby reducing the loss;

[0024] Secondly, in the winding structure, since the bodies on different conductive sheets can be connected through the connecting parts, each body can be effectively electrically connected to the circuit board through only one pin, which can not only reduce the number of solder joints, but also reduce the difficulty of the wiring design of the circuit board;

[0025] Thirdly, since the free end of the pin protrudes from the side surface of the connecting part away from the accommodating space, the accommodating space and the connecting part are raised. In this way, when the pin is connected to the circuit board, the risk of interference between the connecting part and the circuit board can be reduced, thereby increasing the operating space for connecting the pin to the circuit board and reducing the difficulty of connecting the pin to the circuit board.

[0026] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0028] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the copper sheet provided by the prior art Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the copper sheet provided by the prior art Figure 2 ;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of the primary winding and the secondary winding provided by the prior art;

[0032] Figure 4 yes Figure 3 The diagram of the change of magnetic field intensity when the primary winding and the secondary winding are assembled together;

[0033] Figure 5 is a schematic diagram of the three-dimensional structure of the winding provided in an embodiment of the present application;

[0034] Figure 6 is a three-dimensional structural schematic diagram of a first winding structure provided in an embodiment of the present application;

[0035] Figure 7 yes Figure 6 A schematic structural diagram of the first winding structure in an unfolded state is shown in FIG.

[0036] Figure 8 yes Figure 6 A schematic diagram of a top view of the first winding structure;

[0037] Fig. 9 yes Figure 6 A schematic diagram of the main structure of the first winding structure;

[0038] Fig.10 is a schematic diagram of the main structure of a second winding structure provided in an embodiment of the present application;

[0039] Fig.11 yes Fig.10 A three-dimensional structural diagram of the second winding structure;

[0040] Fig.12 yes Fig.10 A schematic structural diagram of the second winding structure in an unfolded state is shown in FIG.

[0041] Fig.13 is a schematic diagram of the main structure of a third winding structure provided in an embodiment of the present application;

[0042] Fig.14 yes Fig.13 A three-dimensional structural diagram of the third winding structure;

[0043] Fig.15 yes Fig.13 A schematic diagram of the structure of the third winding structure in an unfolded state is shown in FIG.

[0044] Fig.16 is a schematic diagram of the three-dimensional structure of the first magnetic component provided in an embodiment of the present application;

[0045] Fig.17 yes Fig.16 An exploded view of the magnetic assembly shown in;

[0046] Fig.18 yes Fig.16 A diagram showing the change in magnetic field strength when the primary winding and the secondary winding of the magnetic assembly are assembled together;

[0047] Fig.19 is a schematic diagram of a three-dimensional structure of a second magnetic component provided in an embodiment of the present application;

[0048] Fig. 20 is a schematic diagram of the three-dimensional structure of a third magnetic component provided in an embodiment of the present application;

[0049] Fig.21 yes Fig. 20 An exploded view of the magnetic assembly shown in;

[0050] Fig. 22 yes Fig. 20 A schematic diagram of the top view of the magnetic assembly shown in ;

[0051] Fig.23 is a schematic diagram of a top view of the structure of a fourth magnetic component provided in an embodiment of the present application;

[0052] Fig.24 is a schematic diagram of the three-dimensional structure of a first power supply provided in an embodiment of the present application;

[0053] Fig.25 is a schematic diagram of the three-dimensional structure of a second power supply provided in an embodiment of the present application;

[0054] Fig.26 It is a schematic diagram of the three-dimensional structure of the third power supply provided in the embodiment of the present application.

[0055] Description of reference numerals:

[0056] A, copper sheet; B, secondary winding; C, primary winding;

[0057] a1, first connection end; a2, second connection end;

[0058] 10. Winding structure;

[0059] 1. Connecting part; 11. First connecting part; 12. Second connecting part;

[0060] 2. Conductive sheet;

[0061] 21. main body; 211. first end; 212. second end; 213. mounting through hole; 214. gap;

[0062] 22, pin; 221, first pin; 222, second pin; 223, heat collecting hole;

[0063] 3. Accommodation space;

[0064] 4. Accommodation channel;

[0065] 100. Magnetic components;

[0066] 101, winding; 1011, first winding; 1012, second winding;

[0067] 20, magnetic core; 201, cover plate; 2011, heat sink; 202, winding column; 203, common column;

[0068] 1000, power supply;

[0069] 200, circuit board; 2001, first circuit board; 2002, second circuit board. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0071] To facilitate understanding of the scheme of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.

[0072] First, see Figures 5 to 24 An embodiment of the present application provides a winding structure 10, which is used in a magnetic component 100, where the magnetic component 100 includes but is not limited to at least one of a transformer, an inductor, etc.

[0073] Specifically, the winding structure 10 includes a connection portion 1 and two oppositely arranged conductive sheets 2. The conductive sheet 2 includes a main body 21 and a pin 22, the main body 21 includes a first end 211 and a second end 212, the first end 211 is connected to the connection portion 1, and the second end 212 is connected to the pin 22, and an accommodating space 3 is defined between the connection portion 1 and the opposite main body 21; wherein the height difference between the second end 212 and the connection portion 1 is greater than or equal to 0, and the total number of the connection portions 1 is equal to the total number of the main bodies 21 on each conductive sheet 2, and both are N, and N is a positive integer.

[0074] The winding structure 10 includes a connecting portion 1 and two conductive sheets 2, wherein the connecting portion 1 connects the two conductive sheets 2. As an example, the connecting portion 1 and the two conductive sheets 2 may be integrally formed or welded together.

[0075] The two conductive sheets 2 are arranged opposite to each other, specifically, the two conductive sheets 2 are arranged face to face and spaced from each other. It can be understood that the connecting portion 1 and the conductive sheet 2 are located on different planes. As an example, the two conductive sheets 2 are parallel to each other, and the connecting portion 1 and the conductive sheet 2 are perpendicular to each other.

[0076] As an example, one of the conductive sheets 2 can be called the first conductive sheet, and the other can be called the second conductive sheet. One side surface of the first conductive sheet faces the second conductive sheet, and similarly, one side surface of the second conductive sheet faces the first conductive sheet. However, there is no direct contact between the first conductive sheet and the second conductive sheet. The first conductive sheet and the second conductive sheet are indirectly connected by being connected to the connecting part 1, so that current can flow from the first conductive sheet through the connecting part 1 to the second conductive sheet.

[0077] The conductive sheet 2 refers to a conductor that can conduct electricity and is in sheet form. As an example, the conductive sheet 2 is a metal sheet, such as a copper sheet.

[0078] The conductive sheet 2 includes a main body 21 and pins 22. It should be noted that the number of the main body 21 on a single conductive sheet 2 can be one or more, and the number of the pins 22 can be one or more.

[0079] In detail, the total number of the connecting parts 1 is equal to the total number of the main bodies 21 on each conductive sheet 2, and both are N, where N is a positive integer. As an example, when the number of the main bodies 21 on each conductive sheet 2 is 1, the number of the connecting parts 1 is also 1, and the connecting part 1 connects two main bodies 21; when the number of the main bodies 21 on each conductive sheet 2 is 2, the number of the connecting parts 1 is also 2, one of the connecting parts 1 connects two of the main bodies 21, and the other connecting part 1 connects the remaining two main bodies 21.

[0080] The main body 21 includes a first end 211 and a second end 212, wherein the first end 211 is connected to the connection portion 1, and the second end 212 is connected to the pin 22, that is, the connection portion 1 and the pin 22 are respectively connected to the two ends of the main body 21, and the main body 21 is connected between the connection portion 1 and the pin 22. In this way, the flow path of the current in the winding structure 10 is: connection portion 1-main body 21-pin 22. The current may flow from the connection portion 1 to the pin 22 via the main body 21, or the current may flow from the pin 22 to the connection portion 1 via the main body 21.

[0081] It should be noted that since the connection part 1 and the pin 22 are connected to different ends of the body 21, the pin 22 is spaced from the connection part 1, that is, the pin 22 is not directly connected to the connection part 1. In this way, direct current communication between the pin 22 and the connection part 1 can be avoided.

[0082] In order to more clearly explain the relationship between the pin 22 and the connection part 1, the pin 22 on the first conductive sheet can be called the left pin, and the pin 22 on the second conductive sheet can be called the right pin. In the winding structure 10, the pin 22 is spaced from the connection part 1, specifically, the left pin, the right pin and the connection part 1 are spaced from each other, that is, the left pin is spaced from the right pin, the left pin is spaced from the connection part 1, and the right pin is spaced from the connection part 1.

[0083] Optionally, the pins 22 distributed on different conductive sheets 2 are separated by the connecting portion 1, that is, the pins 22 connected to the two opposite bodies 21 are respectively distributed on both sides of the connecting portion 1 connecting the two opposite bodies 21, rather than on the same side of the connecting portion 1. As an example, see Figure 7, the left pin is located on one side of the connecting portion 1, and the right pin is located on the other side of the connecting portion 1. The purpose of this arrangement is to ensure that in the winding structure 10, the current flows in the first body and the second body in the same direction, for example Figure 6 The dashed lines with arrows in the middle are all in clockwise direction.

[0084] Since the two conductive sheets 2 are arranged opposite to each other, the main bodies 21 on the two conductive sheets 2 are also arranged opposite to each other. In this way, the main bodies 21 on different conductive sheets 2 that are opposite to each other and the connecting parts 1 connecting the two main bodies 21 can jointly define the accommodating space 3.

[0085] As an example, the body 21 on the first conductive sheet is called the first body, and the body 21 on the second conductive sheet is called the second body. The first body is opposite to the second body, and both the first body and the second body are connected to the connecting part 1. The first body, the second body and the connecting part 1 jointly define the accommodating space 3.

[0086] As an example, the winding structure 10 is a secondary winding, and the accommodating space 3 is used to accommodate the primary winding. The connecting portion 1 can support the primary winding, and the two main bodies 21 can limit the primary winding from both sides of the primary winding. Of course, in other examples, the winding structure 10 can also be a primary winding, so that the accommodating space 3 is used to accommodate the secondary winding.

[0087] See also Figure 5 , Figure 6 , Fig.16 and Fig.18 , the winding structure 10 is a secondary winding, and the accommodating space 3 is used to accommodate the primary winding. For example, when the primary winding is loaded in the accommodating space 3, the magnetic field strength H in the longitudinal direction is increased from 0 to Since the current between the primary winding and the secondary winding is in opposite directions, as the current of the primary winding reverses, the magnetic field intensity H at the spatial position of the corresponding primary winding changes from Down to The magnetic field strength H at the spatial position corresponding to the other secondary winding is It rises to 0 again. Since the currents of the primary winding and the secondary winding are opposite, the magnetic field strength H of the primary winding decreases, which is reflected by the negative slope. There is no current in the air position, so the magnetic field strength remains unchanged.

[0088] It can be seen that since there is a containing space 3 between the two conductive sheets 2, the containing space 3 is used to accommodate the primary winding. When the primary winding is accommodated in the containing space 3, the magnetic field strength at the position where the primary winding and the secondary winding are close to each other is Compared with the method of vertical winding of flat wire (see Figure 3 and Figure 4), the magnetic field strength is halved and the corresponding losses are also reduced.

[0089] Please continue to see Figure 5 , Figure 6 , Fig.16 and Fig.18 The winding structure 10 includes a connecting portion 1 and two opposite conductive sheets 2, each conductive sheet 2 includes a main body 21, so that the winding structure 10 is configured to include a coil with two continuous turns formed from one conductive sheet 2 to the other conductive sheet 2, wherein each main body 21 is equivalent to a turn of the coil, and the connecting portion 1 connects the two main bodies 21, thereby realizing the series connection between the two turns of the coil.

[0090] It can be seen that compared with the discrete arrangement of the conductive sheet 2 (see Figure 1 and Figure 2 ), the total number of pins 22 required for the winding structure 10 composed of two conductive sheets 2 is reduced from 4 to 2, and the number of pins 22 is significantly reduced. That is, in the implementation of the present application, since the main bodies 21 on different conductive sheets 2 can be connected through the connecting portion 1, each main body 21 can be effectively electrically connected to the circuit board 200 through only one pin 22.

[0091] Further, along the installation direction of the winding structure 10, the height difference between the second end 212 and the connecting portion 1 is greater than or equal to 0. Thus, in the installation direction of the winding structure 10, the height difference between the pin 22 connected to the second end 212 and the connecting portion 1 must be greater than 0, that is, the pin 22 protrudes from the side surface of the connecting portion 1 away from the accommodating space 3. Fig.17 Here, the installation direction of the winding structure 10 refers to the direction in which the winding structure 10 is installed on the circuit board 200 .

[0092] Usually, the pin 22 is connected to the body 21 in that one end of the pin 22 is connected to the body 21 and the other end of the pin 22 is formed as a free end. The free end of the pin 22 extends away from the body 21 and protrudes from a side surface of the connecting portion 1 away from the accommodating space 3.

[0093] As an example, in the winding structure 10, the connection line between the free end of the left pin and the free end of the right pin (see Fig. 9 The dotted line in the figure) is located on the side of the connecting portion 1 away from the accommodating space 3, that is, the distance between the line connecting the free end of the left pin and the free end of the right pin and the surface of the side of the connecting portion 1 away from the accommodating space 3 is greater than zero.

[0094] The pin 22 is specifically an electrical connection terminal, which is used to connect to the circuit board 200, so as to realize the electrical connection between the winding structure 10 and the circuit board 200. As an example, the pin 22 can be inserted into a conductive hole (such as a plated through hole PTH, etc.) opened on the circuit board 200 and soldered to the hole wall of the conductive through hole. Since the free end of the pin 22 protrudes from the side surface of the connecting part 1 away from the accommodating space 3, when the pin 22 is connected to the circuit board 200, the interference caused by the connecting part 1 can be reduced, thereby reducing the difficulty of connecting the pin 22 to the circuit board 200.

[0095] In summary, the winding structure 10 provided in the embodiment of the present application has the following advantages:

[0096] First, by defining the accommodation space 3 between the connecting portion 1 and the opposite main body 21, when the winding structure 10 is used as one of the primary winding and the secondary winding, and the other of the primary winding and the secondary winding is arranged in the accommodation space 3, the magnetic field strength at the position where the primary winding and the secondary winding are close to each other can be significantly reduced, thereby reducing the loss;

[0097] Secondly, in the winding structure 10, since the main bodies 21 on different conductive sheets 2 can be connected through the connecting portion 1, each main body 21 can be effectively electrically connected to the circuit board 200 only through one pin 22, which can not only reduce the number of solder joints, but also reduce the difficulty of routing design of the circuit board 200;

[0098] Again, since the free end of the pin 22 protrudes from the side surface of the connecting part 1 away from the accommodating space 3, the accommodating space 3 and the connecting part 1 are raised. In this way, when the pin 22 is connected to the circuit board 200, the risk of interference between the connecting part 1 and the circuit board 200 can be reduced, thereby increasing the operating space for connecting the pin 22 with the circuit board 200 and reducing the difficulty of connecting the pin 22 with the circuit board 200.

[0099] In some embodiments, see Fig.11 The connecting part 1 includes a first connecting part 11 and a second connecting part 12, and the first end 211 of the main body 21 is connected to the second connecting part 12 through the first connecting part 11; along the installation direction of the winding structure 10, the height difference between the second end 212 of the main body 21 and the second connecting part 12 is greater than or equal to 0.

[0100] It can be understood that the first connection portion 11 is located between the first end 211 of the main body 21 and the second connection portion 12. The second end 212 of the main body 21 is spaced from the second connection portion 12. In the installation direction of the winding structure 10, the height difference between the second end 212 and the connection portion 1 is greater than or equal to 0, specifically, the height difference between the second end 212 and the second connection portion 12 is greater than or equal to 0.

[0101] Compared with the first connection portion 11 , the second connection portion 12 is farther from the body 21 , and the risk of interference between the connection portion 1 and the circuit board 200 is further reduced by controlling the height difference between the second end 212 of the body 21 and the second connection portion 12 .

[0102] Since the connecting portion 1 and the conductive sheet 2 are not located in the same plane, at least one of the first connecting portion 11 and the second connecting portion 12 is a bent and extended structure.

[0103] As an example, the first connection portion 11 is a bent and extended structure, and the main body 21 is indirectly connected to the second connection portion 12 via the first connection portion 11. The second connection portion 12 can be a planar extended structure or a bent and extended structure.

[0104] In some embodiments, see Fig.14 The pins 22 include first pins 221 and second pins 222 . The total number of the first pins 221 is 2, and the total number of the second pins 222 is N-1. The second pins 222 are formed by connecting two adjacent first pins 221 .

[0105] The first pin 221 and the second pin 222 are different types of pins 22. Here, the first pin 221 is also referred to as an independent pin 22, and the first pin 221 is only connected to one body 21. The second pin 222 is also referred to as a common pin 22, and the second pin 222 is simultaneously connected to two adjacent bodies 21 on the same conductive sheet 2, and the second pin 222 is a pin 22 shared by two adjacent bodies 21. Since in the winding structure 10, one body 21 must be connected to one pin 22, the second pin 222 is equivalent to the first pins 221 of the two adjacent bodies 21 connected to form. Optionally, the second pin 222 is formed by connecting two first pins 221 edge to edge, so that the surface area of ​​the second pin 222 is equal to the sum of the surface areas of the two first pins 221, that is, twice the surface area of ​​a single first pin 221.

[0106] It can be understood that the number of first pins 221 in the winding structure 10 is 2, and the number of second pins 222 is N-1, so the total number of first pins 221 and second pins 222 (also referred to as the total number of pins) is N+1. The number of second pins 222 is related to the number N of main bodies 21 on the conductive sheet 2, so there may be no second pins 222 in the winding structure 10, or there may be second pins 222, and the number of second pins 222 may be less than the number of first pins 221, may be equal to the number of first pins 221, or may be more than the number of first pins 221.

[0107] It can be seen that when N is greater than or equal to 2, the number of second pins 222 is greater than or equal to 1. By setting the second pins 222, the number of pins 22 can be further reduced, thereby reducing the number of solder joints and reducing the difficulty of installing the winding structure 10; and the setting of the second pins 222 can also realize equipotential design and further reduce the difficulty of routing design of the circuit board 200.

[0108] As an example, see Figure 6 , the number of the main body 21 on a single conductive sheet 2 is 1, and the total number of the first pin 221 and the second pin 222 on the winding structure 10 is 2, both of which are the first pin 221, and the two first pins 221 are respectively arranged on two different conductive sheets 2.

[0109] As an example, see Fig.11 , the number of main bodies 21 on a single conductive sheet 2 is 2, then the total number of first pins 221 and second pins 222 on the winding structure 10 is 3, wherein the two first pins 221 are both arranged on the same conductive sheet 2, and the one second pin 222 is arranged on another conductive sheet 2.

[0110] As an example, see Fig.14 , the number of main bodies 21 on a single conductive sheet 2 is 3, and the total number of first pins 221 and second pins 222 on the winding structure 10 is 4, of which 2 pins 22 are first pins 221, and 2 pins 22 are second pins 222, and each conductive sheet 2 is respectively provided with a first pin 221 and a second pin 222.

[0111] Following the same rule, when the number of main bodies 21 on a single conductive sheet 2 is 6, the total number of first pins 221 and second pins 222 on the winding structure 10 is 7, wherein one conductive sheet 2 is provided with 2 first pins 221 and 2 second pins 222, and another conductive sheet 2 is provided with 3 second pins 222.

[0112] See also Figure 2 and Figure 6 ,for Figure 2 In the solution shown in , since the conductive sheet 2 (specifically a copper sheet) is separately arranged, the total number of pins 22 required for the winding 101 composed of two conductive sheets 2 is 4N, N=1, that is, the total number of pins 22 is 4; while the winding structure 10 in the present application only needs N+1 pins 22, N=1, that is, the total number of pins 22 is 2, and the number of pins 22 is significantly reduced. Similarly, when N=2, for the way in which the conductive sheet 2 is separately arranged, the total number of pins 22 is 8, while for the solution provided in the embodiment of the present application, when N=2, the total number of pins 22 is 3, and the number of pins 22 is significantly reduced. Generally, the larger N is, the more obvious the reduction in the number of pins 22 is for the solution provided in the embodiment of the present application.

[0113] In some embodiments, see Figure 6 , N=1, the two first pins 221 are respectively connected to the second ends 212 of the two main bodies 21 and are located on both sides of the connecting portion 1; the two main bodies 21 are configured so that current flows in the same direction.

[0114] That is, when current is connected to the winding structure 10 , the current flows in the two bodies 21 in the same direction.

[0115] Typically, the winding structure 10 is used to cooperate with the magnetic core 20, wherein the winding post 202 on the magnetic core 20 is passed through the main body 21, that is, the main body 21 is sleeved on the winding post 202, and by controlling the flow direction of the current on the two main bodies 21 to be the same, it can be ensured that the winding structure 10 can effectively cooperate with the magnetic core 20.

[0116] In some embodiments, see Fig.10 and Fig.13 , N≥2, two adjacent bodies 21 on each conductive sheet 2 are configured so that current flows in opposite directions, and two bodies 21 located opposite to each other on two conductive sheets 2 are configured so that current flows in the same direction.

[0117] That is, when the winding structure 10 is connected to current, the current flows in opposite directions on two adjacent main bodies 21 in each conductive sheet 2, and the current flows in the same direction on two opposite main bodies 21 on different conductive sheets 2.

[0118] Through the above arrangement, since N is greater than or equal to 2, that is, the number of main bodies 21 on a single conductive sheet 2 is multiple, it is possible to integrally form multiple different main bodies 21 and set them on the same conductive sheet 2. In this way, at least part of the equipotential positions of two adjacent main bodies 21 can be connected together to reduce the risk of short circuit. In addition, the total area of ​​the main body 21 on the conductive sheet 2 can be increased, that is, the amount of conductive material is increased, the conductive performance is improved, and then the power of the magnetic component 100 is improved.

[0119] As an example, see Fig.10 The number of the main bodies 21 on a single conductive sheet 2 is 2, and as shown by the dotted lines with arrows in the figure, two different current flow paths are formed on the single conductive sheet 2.

[0120] As an example, see Fig.13 The number of the main bodies 21 on a single conductive sheet 2 is 3, and three different current flow paths are formed on the single conductive sheet 2.

[0121] In some embodiments, see Fig.12 and Fig.15The second pin 222 is arranged between the first pins 221 , the adjacent first pin 221 and the second pin 222 are respectively located on two conductive sheets 2 , and the adjacent two second pins 222 are also respectively located on two conductive sheets 2 .

[0122] It can be foreseen that when the number N of the main bodies 21 on the conductive sheet 2 is an even number, the two first pins 221 are located on the same conductive sheet 2, so that the total number of pins 22 is an odd number. In this case, the numbers of pins 22 on the two conductive sheets 2 are not equal, and the number of pins 22 on the conductive sheet 2 with two first pins 221 is one more; when N is an odd number, the two first pins 221 are respectively located on different conductive sheets 2, so that the total number of pins 22 is an even number. In this case, the numbers of pins 22 on the two conductive sheets 2 are equal.

[0123] In some embodiments, see, 6 and Figure 7 , Fig.11 and Fig.12 , Fig.14 and Fig.15 A mounting through hole 213 is provided on the main body 21, and the mounting through holes 213 of the two oppositely positioned main bodies 21 correspond to each other and jointly form an accommodating channel 4; a gap 214 is also provided on the main body 21, and the mounting through hole 213 is connected to the gap 214, and the pin 22 and the connecting portion 1 are respectively located on both sides of the gap 214.

[0124] The main body 21 is also provided with an installation through hole 213. The installation through holes 213 of the two relatively positioned main bodies 21 correspond to each other and jointly form an accommodating channel 4. The accommodating channel 4 is used for the winding post 202 of the magnetic core 20 to pass through it, so that the winding structure 10 is sleeved on the winding post 202 of the magnetic core 20.

[0125] It can be understood that the winding post 202 of the magnetic core 20 will pass through the mounting through hole 213. The shape of the mounting through hole 213 can be set according to the cross-sectional shape of the winding post 202, so that the winding post 202 can be adapted to the mounting through hole 213. As an example, the shape of the mounting through hole 213 can be one of a circle, an ellipse, a racetrack, a square and a rectangle. It should be noted here that a mounting through hole 213 is provided on a main body 21, but a plurality of main bodies 21 can be provided on a conductive sheet 2, so that the number of mounting through holes 213 on a conductive sheet 2 can be one or more. When the number of mounting through holes 213 on a conductive sheet 2 is multiple, different mounting through holes 213 are arranged at intervals, so that a plurality of accommodating channels 4 can be obtained, so that the winding structure 10 can be assembled with the magnetic core 20 having a plurality of winding posts 202, thereby improving the power density of the prepared magnetic component 100.

[0126] In order to more clearly illustrate the formation of the accommodating channel 4, the mounting through hole 213 on the first conductive sheet can be referred to as the first mounting through hole 213, and the mounting through hole 213 on the second conductive sheet can be referred to as the second mounting through hole 213. When the first conductive sheet and the second conductive sheet are arranged opposite to each other, the first mounting through hole 213 and the second mounting through hole 213 correspond one to one.

[0127] In order to achieve a one-to-one correspondence between the mounting through holes 213 on the two conductive sheets 2, the number of mounting through holes 213 on one conductive sheet 2 and the mounting through holes 213 on the other conductive sheet 2 can be equal, and the positions can correspond to each other. However, the shapes of the mounting through holes 213 on the two conductive sheets 2 can be the same or different. Similarly, the areas of the mounting through holes 213 on the two conductive sheets 2 can be equal or different. When the mounting through holes 213 on the two conductive sheets 2 have the same shape and the same area, the resulting accommodating channel 4 can be a straight channel. When the mounting through holes 213 on the two conductive sheets 2 have the same shape but the area is larger or smaller, the resulting accommodating channel 4 can be a tapered channel.

[0128] As an example, two first mounting through holes 213 are provided on the first conductive sheet, and two second mounting through holes 213 are provided on the second conductive sheet. One first mounting through hole 213 on the first conductive sheet corresponds to one first mounting through hole 213 on the second conductive sheet, and define an accommodating channel 4; another first mounting through hole 213 on the first conductive sheet corresponds to another first mounting through hole 213 on the second conductive sheet, and define another accommodating channel 4.

[0129] A gap 214 is also formed on the main body 21, and the gap 214 connects the mounting through hole 213 with the outside world, where the outside world refers to the environment outside the conductive sheet 2. The pin 22 and the connecting portion 1 are respectively located on both sides of the gap 214, that is, the gap 214 also separates the pin 22 and the connecting portion 1. As an example, the pin 22 and the connecting portion 1 are spaced apart on the main body 21, and a first sub-gap is defined between the pin 22 and the connecting portion 1. A second sub-gap is also hollowed out on the main body 21, and the first sub-gap is connected to the second sub-gap, and the second sub-gap is also connected to the mounting through hole 213. In other words, the gap 214 includes the first sub-gap and the second sub-gap, and the mounting through hole 213 can be connected to the outside world through the gap 214.

[0130] The gap 214 is provided to prevent the pin 22 from being directly connected to the connecting portion 1 , thereby preventing current from flowing directly between the pin 22 and the connecting portion 1 .

[0131] In some embodiments, see, 6 and Figure 7 , Fig.11 and Fig.12 , Fig.14 and Fig.15The connecting portion 1 and two oppositely disposed conductive sheets 2 are formed into one piece by stamping and bending.

[0132] Specifically, a sheet-shaped conductor is punched out by stamping to obtain a winding structure 10 in an unfolded state, and then the winding structure 10 in an unfolded state is bent to obtain a winding structure 10 in a folded state. At this time, the winding structure 10 in the folded state can be directly used as the first winding 101.

[0133] The winding structure 10 obtained by such arrangement has high strength, and the winding structure 10 also serves as a skeleton, so that when the winding structure 10 is applied to the magnetic component 100, the skeleton can be omitted, which is helpful for improving the power density of the magnetic component 100 and improving the heat dissipation performance of the magnetic component 100. In addition, the process of stamping and bending integrated molding is simple, which is conducive to improving the manufacturing feasibility of the winding structure 10.

[0134] In some embodiments, see Fig.19 The pin 22 is provided with a heat collecting hole 223 and / or a heat collecting groove.

[0135] Grooving and digging holes will reduce the conductive material on the pin 22. The conductive material usually also has thermal conductivity, which will reduce the thermal conductivity of the pin 22. In this way, heat is easily accumulated on the pin 22, making welding easier to achieve, thereby improving the welding effect of the pin 22 and the circuit board 200.

[0136] Second, see Figures 16 to 23 The embodiment of the present application also provides a magnetic component 100, which includes a winding 101 and two oppositely arranged magnetic cores 20, the winding 101 includes a first winding 1011 and a second winding 1012, the first winding 1011 is the winding structure 10 as described above, and the second winding 1012 is located in the accommodating space 3; the magnetic core 20 includes a cover plate 201, a winding post 202 and a common post 203, one end of the winding post 202 and the common post 203 are both connected to the cover plate 201, the winding post 202 is arranged in the accommodating channel 4, the accommodating channel 4 is formed by the mounting through holes 213 of the two main bodies 21 located oppositely on the two conductive sheets 2, and the positions of the mounting through holes 213, the accommodating channel 4 and the winding post 202 correspond to each other; wherein the number of the winding posts 202 is N, and the number of the common posts 203 is greater than or equal to 0.

[0137] The winding 101 is a circuit part in the magnetic component 100, and the winding 101 includes a first winding 1011 and a second winding 1012, and the first winding 1011 and the second winding 1012 cooperate with each other. Usually, one of the first winding 1011 and the second winding 1012 is a primary winding, and the other of the first winding 1011 and the second winding 1012 is a secondary winding. Take the magnetic component 100 as an example of a transformer for explanation. If the transformer is used to achieve boost, that is, the transformer is suitable for low-voltage-high-voltage application scenarios, the first winding 1011 can be designed as a primary winding, and the second winding 1012 can be designed as a secondary winding; if the transformer is used to achieve step-down, that is, the transformer is suitable for high-voltage-low-voltage application scenarios, the first winding 1011 can be designed as a secondary winding, and the second winding 1012 can be designed as a primary winding.

[0138] The magnetic core 20 serves as a magnetic circuit portion of the magnetic assembly 100. There are two magnetic cores 20, which are arranged opposite to each other, so as to form a closed magnetic circuit.

[0139] Specifically, the magnetic core 20 includes a cover plate 201 , winding poles 202 and common poles 203 , one end of the winding poles 202 and the common poles 203 are connected to the cover plate 201 , wherein the number of the winding poles 202 is N, and the number of the common poles 203 is greater than or equal to 0.

[0140] Since the positions of the mounting through hole 213, the accommodating channel 4 and the winding post 202 correspond, the winding post 202 is inserted into the accommodating channel 4, and the main body 21 is sleeved on the winding post 202. Therefore, the number of winding posts 202 in the magnetic core 20 is equal to the number of accommodating channels 4 in the winding structure 10, and the number of accommodating channels 4 is equal to the number N of main bodies 21 on a single conductive sheet 2. Therefore, the number of winding posts 202 is N.

[0141] As an example, when there is one accommodating channel 4, only one winding post 202 may be provided on the cover plate 201; when there are multiple accommodating channels 4, multiple winding posts 202 may be provided on the cover plate 201. When there are multiple accommodating channels 4 and multiple winding posts 202, the winding posts 202 are provided one-to-one with the accommodating channels 4, and different winding posts 202 are spaced from each other, so that a receiving space can be reserved for the winding structure 10, which facilitates the assembly of the winding structure 10.

[0142] The number of the common pillars 203 is greater than or equal to 0, that is, the magnetic core 20 may include the common pillars 203 or may not include the common pillars 203 .

[0143] Optionally, the magnetic core 20 includes a plurality of common posts 203 arranged at intervals, the common posts 203 are arranged on the cover plate 201 and are spaced apart from the winding posts 202, wherein the common posts 203 are close to the edge area of ​​the cover plate 201, and the winding posts 202 are close to the middle area of ​​the cover plate 201. By adding a plurality of common posts 203, the number of closed magnetic circuits can be further increased, and the design types of the magnetic component 100 can be enriched. In addition, the winding posts 202 are close to the middle area of ​​the cover plate 201, which facilitates the cooperation between the winding posts 202 and the accommodating channel 4, and the common posts 203 are close to the edge area of ​​the cover plate 201, so that the winding structure 10 is located on the inner side of the common posts 203, so that the common posts 203 can also limit or protect the winding structure 10.

[0144] As an example, see Fig.21 Two winding poles 202 and four common poles 203 are arranged on the cover plate 201 at intervals, so that when the two magnetic cores 20 are arranged opposite to each other, at least five closed magnetic circuits can be formed.

[0145] According to the second aspect of the present application, the magnetic component 100 includes the above-mentioned winding structure 10. The magnetic component 100 has all the beneficial effects of the above-mentioned winding structure 10, which will not be described in detail in the present application.

[0146] In some embodiments, see Fig.16 , the first winding 1011 is the primary winding, the second winding 1012 is the secondary winding, and the secondary winding is a coil structure; or, the first winding 1011 is the secondary winding, the second winding 1012 is the primary winding, and the primary winding is a coil structure.

[0147] By configuring the second winding 1012 as a coil structure, such a configuration is conducive to increasing the number of coil turns by increasing the number of windings. As an example, the coil structure includes multiple strands of twisted wire, or multiple strands of twisted wire with an insulation layer.

[0148] In some embodiments, see Fig. 22 Along the thickness direction of the cover plate 201 , a heat dissipation slot 2011 penetrating the cover plate 201 is provided on the side wall of the cover plate 201 .

[0149] Generally, since the magnetic field strength at the edge area of ​​the cover plate 201 is relatively weak, the side wall of the cover plate 201 is concave to form a heat dissipation groove 2011. On the one hand, the weight of the cover plate 201 can be reduced. On the other hand, the heat dissipation groove 2011 runs through the cover plate 201, so that the heat dissipation groove 2011 can also promote the heat dissipation of the magnetic component 100.

[0150] The number of the heat dissipation slots 2011 on the cover plate 201 can be one or more.

[0151] In some embodiments, see Fig.23, at least part of the heat dissipation slots 2011 are located corresponding to the connection portion 1 in the winding structure 10. The connection portion 1 is used to conduct current, and the connection portion 1 is usually narrow, which makes the connection portion 1 easy to heat up. By setting the position of the heat dissipation slots 2011 to correspond to the connection portion 1, it is convenient to dissipate heat from the connection portion 1.

[0152] In some embodiments, see Fig.16 and Fig. 20 The magnetic component 100 includes a plurality of stacked winding structures 10. That is, the number of winding structures 10 in the magnetic component 100 is multiple, and by increasing the number of winding structures 10 and stacking all winding structures 10 between two magnetic cores 20, the energy density of the magnetic component 100 can be further improved.

[0153] As an example, see Fig.16 The magnetic component 100 includes three stacked winding structures 10, so that the magnetic field strength H in the magnetic component 100 will undergo three cycles, always maintaining a low magnetic field strength, and the loss of the magnetic component 100 is also low.

[0154] It should be emphasized here that the number of magnetic components 100 can be set according to actual power requirements, so that the magnetic components 100 can be more flexibly adapted to applications with different powers.

[0155] In some embodiments, see Fig. 22 and Fig.23 The pins 22 of the winding structure 10 protrude from the edge of the cover plate 201 , and the edge of the main body 21 does not exceed the edge of the cover plate 201 .

[0156] The advantage of such a configuration is that it not only facilitates the connection between the pin 22 and the circuit board 200 , but also allows the circuit part and the magnetic circuit part of the magnetic component 100 to cooperate better, and the cover 201 can also protect the main body 21 .

[0157] In some embodiments, see Fig. 22 The cover plate 201 has a first side edge and a second side edge opposite to each other, the pins 22 of all winding structures 10 protrude from the first side edge, the number of the circuit board 200 is one, and the circuit board 200 is arranged close to the first side edge. In this way, the pins 22 of all winding structures 10 are connected to the same circuit board 200, and the structure of the magnetic assembly 100 is more compact.

[0158] In some embodiments, see Fig.23The cover plate 201 has a first side edge and a second side edge opposite to each other, the pins 22 of a part of the winding structure 10 protrude from the first side edge, and the pins 22 of another part of the winding structure 10 protrude from the second side edge, and there are two circuit boards 200, one of which is arranged close to the first side edge, and the other circuit board 200 is arranged close to the second side edge. The advantage of such an arrangement is that it is convenient to connect the pins 22 to the circuit board 200, and the wiring inside a single circuit board 200 is also simpler.

[0159] In some embodiments, the magnetic assembly 100 includes at least one of a transformer and an inductor.

[0160] Third, see Figure 24 to Figure 26 The embodiment of the present application further provides a power supply 1000 , including a circuit board 200 and the magnetic component 100 as described above, wherein the magnetic component 100 is electrically connected to the circuit board 200 via a pin 22 .

[0161] See also Fig.17 and Fig.24 The pin 22 is connected to the circuit board 200 , so that the conduction of the circuit in the winding structure 10 can be controlled through the circuit board 200 .

[0162] In some embodiments, see Fig.24 The circuit board 200 includes a first circuit board 2001, and the magnetic assembly 100 is disposed on the first circuit board 2001. On the magnetic assembly 100, the pins 22 all face the first circuit board 2001 and are connected to the first circuit board 2001. As an example, the pins 22 of all winding structures 10 protrude from the same side of the cover plate 201, and the pins 22 are plugged into the first circuit board 2001.

[0163] In some embodiments, see Fig.25 and Fig.26 The circuit board 200 includes a first circuit board 2001 and a second circuit board 2002, and the second circuit board 2002 is vertically arranged on the first circuit board 2001 and electrically connected to the first circuit board 2001. The magnetic component 100 is arranged on the first circuit board 2001, and the side of the magnetic component 100 is close to the second circuit board 2002. Specifically, the magnetic component 100 includes a magnetic core 20, a cover plate 201 of the magnetic core 20 is supported on the first circuit board 2001, the second circuit board 2002 is close to the common column 203 of the magnetic core 20 and the side of the cover plate 201, and the pin 22 of the winding structure 10 protrudes from the cover plate 201 and is connected to the second circuit board 2002. As an example, the first circuit board 2001 is a main circuit board, and the second circuit board 2002 is a sub-circuit board or a synchronous rectifier board.

[0164] In some embodiments, see Fig.25The number of the second circuit board 2002 is one, and the pins 22 of all winding structures 10 protrude from the same side of the cover plate 201 and are connected to the second circuit board 2002 .

[0165] In some embodiments, see Fig.26 There are two second circuit boards 2002, and the two second circuit boards 2002 are respectively arranged on opposite sides of the magnetic assembly 100. On the magnetic assembly 100, the pins 22 of a portion of the winding structure 10 protrude from one side edge of the cover plate 201 and are connected to one of the second circuit boards 2002, and the pins 22 of another portion of the winding structure 10 protrude from the other side edge of the cover plate 201 and are connected to the other second circuit board 2002.

[0166] According to the third aspect of the present application, the power supply 1000 includes the above-mentioned magnetic component 100. The power supply 1000 has all the beneficial effects of the above-mentioned magnetic component 100, which will not be described in detail in the present application.

[0167] In some embodiments, the switching power supply 1000 includes a charger, which is exemplified as a vehicle-mounted charger.

[0168] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0169] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0170] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0171] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A winding structure, characterized in that: The winding structure comprises a connecting portion and two oppositely arranged conductive sheets, the conductive sheet comprises a main body and a pin, the main body comprises a first end and a second end, the first end is connected to the connecting portion, the second end is connected to the pin, and an accommodating space is defined between the connecting portion and the opposite main body; Among them, along the installation direction of the winding structure, the height difference between the second end and the connecting part is greater than or equal to 0, and the total number of the connecting parts is equal to the total number of the main bodies on each of the conductive sheets, and both are N, where N is a positive integer.

2. The winding structure according to claim 1, characterized in that: The connecting part includes a first connecting part and a second connecting part, and the first end of the main body is connected to the second connecting part through the first connecting part; along the installation direction of the winding structure, the height difference between the second end of the main body and the second connecting part is greater than or equal to 0.

3. The winding structure according to any one of claims 1 to 2, characterized in that: The pins include first pins and second pins, the total number of the first pins is 2, and the total number of the second pins is N-1; wherein the second pins are formed by connecting two adjacent first pins.

4. The winding structure according to claim 3, characterized in that: N=1, the two first pins are respectively connected to the second ends of the two bodies and are located at both sides of the connecting portion; the two bodies are configured so that current flows in the same direction.

5. The winding structure according to claim 3, characterized in that: N≥2, two adjacent bodies on each conductive sheet are configured so that current flows in opposite directions, and two bodies located opposite to each other on two conductive sheets are configured so that current flows in the same direction.

6. The winding structure according to claim 5, characterized in that: The second pin is arranged between the first pins, the adjacent first pins and the second pins are respectively located on two of the conductive sheets, and the adjacent two second pins are also respectively located on two of the conductive sheets.

7. The winding structure according to any one of claims 4 to 6, characterized in that: The main body is provided with a mounting through hole, and the mounting through holes of the two relatively positioned main bodies are located in corresponding positions and jointly form an accommodating channel; the main body is also provided with a gap, the mounting through hole is connected to the gap, and the pins and the connecting part are respectively located on both sides of the gap.

8. The winding structure according to claim 7, characterized in that: The connecting portion and two oppositely arranged conductive sheets are integrally formed by stamping and bending.

9. The winding structure according to claim 8, characterized in that: The pins are provided with heat collecting holes and / or heat collecting grooves.

10. A magnetic component, characterized in that: The magnetic component includes a winding and two magnetic cores arranged opposite to each other. The winding comprises a first winding and a second winding, the first winding is a winding structure according to any one of claims 1 to 9, and the second winding is located in the accommodating space; The magnetic core includes a cover plate, a winding post and a common post, wherein one end of the winding post and the common post are connected to the cover plate, and the winding post is arranged in a receiving channel, and the receiving channel is formed by two mounting through holes of the main body that are opposite to each other on the two conductive sheets, and the positions of the mounting through holes, the receiving channel and the winding post correspond to each other; wherein the number of the winding posts is N, and the number of the common posts is greater than or equal to 0.

11. The magnetic assembly according to claim 10, characterized in that: The first winding is a primary winding, the second winding is a secondary winding, and the secondary winding is a coil structure; or the first winding is a secondary winding, the second winding is a primary winding, and the primary winding is a coil structure.

12. The magnetic assembly according to claim 11, characterized in that: Along the thickness direction of the cover plate, a heat dissipation slot penetrating the cover plate is arranged on the side wall of the cover plate.

13. A power supply, characterized in that: It comprises a circuit board and the magnetic component according to any one of claims 11 to 12, wherein the magnetic component is connected to the circuit board through the pins.

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