Switching power supply transformer and electronic equipment

Abstract

The utility model provides a switching power supply transformer and electronic equipment, the switching power supply transformer comprises a body, a primary winding, a secondary winding and a magnetic core, the body comprises a first surface, a second surface and a through hole, and the first surface and the second surface are oppositely arranged along a first direction; the primary winding comprises a first winding, a second winding and a connecting wire which are integrally formed, the first winding is arranged on the first surface, the second winding is arranged on the second surface, the connecting wire is arranged in the through hole, and the first winding is electrically connected with the second winding through the connecting wire; the secondary winding is arranged in the body; the magnetic core is arranged in the through hole in a penetrating mode. The secondary winding is arranged in the body, and the first winding and the second winding are arranged on the first surface and the second surface respectively and are connected through the connecting line. Compared with the scheme in the related technology, a blocking piece is not needed, and the power density of the switching power supply transformer is improved.

Description

Technical Field

[0001] This application relates to the field of electronic components technology, and in particular to a switching power supply transformer and electronic equipment. Background Technology

[0002] A switching power supply transformer is a type of transformer controlled by switching transistors. It can convert the input voltage into an output voltage that meets specific requirements through magnetic coupling and transformation. It also has functions such as insulation isolation and power transmission, and is widely used in various electronic devices.

[0003] In the relevant technical solution, the switching power supply transformer includes a winding frame, two primary windings and a secondary winding. The two primary windings and the secondary winding are wound on the winding frame in the arrangement of primary winding, secondary winding and primary winding. The winding frame is provided with two opposing baffles, which can limit the winding range of the primary winding and the secondary winding to ensure smooth winding.

[0004] However, the blocking plates used in the solution occupy some space, which is not conducive to improving the power density of the switching power supply transformer. Utility Model Content

[0005] In order to overcome the above-mentioned defects in related technologies, the purpose of this application is to provide a switching power supply transformer and electronic device, which is beneficial to improving the power density of the switching power supply transformer.

[0006] On the one hand, this application provides a switching power supply transformer, including

[0007] The body includes a first surface and a second surface disposed opposite to each other along a first direction, and a through hole;

[0008] The primary winding includes an integrally formed first winding, a second winding, and a connecting wire. The first winding is disposed on the first surface, the second winding is disposed on the second surface, and the connecting wire is disposed in the through hole. The first winding and the second winding are electrically connected through the connecting wire.

[0009] The secondary winding is disposed within the main body;

[0010] The magnetic core is inserted into the through hole.

[0011] In one possible implementation, the body is internally provided with a first pin and a second pin, the first winding is electrically connected to the first pin, and the second winding is electrically connected to the second pin, wherein the first pin protrudes from the first surface and the second pin protrudes from the second surface;

[0012] The end of the secondary winding extends out of the body to form a primary pin;

[0013] The first pin and the second pin are located at the first end of the body along the second direction, and the secondary pin is located at the second end of the body along the second direction.

[0014] In one possible implementation, the body is further provided with an isolation post, which is sleeved on the secondary pin.

[0015] One possible implementation also includes:

[0016] A wire-wound circuit board, the wire-wound circuit board including an auxiliary winding or a shielding winding, the wire-wound circuit board being disposed on the first surface or the second surface;

[0017] The main body is also provided with a third pin and a fourth pin, both of which are used for electrical connection with the winding circuit board.

[0018] In one possible implementation, the body further includes a first protrusion and a second protrusion, with the first winding wound around the first protrusion and the second winding wound around the second protrusion.

[0019] In one possible implementation, the first protrusion has a first groove, the second protrusion has a second groove, the connecting wire is electrically connected to the first winding through the first groove, and the connecting wire is electrically connected to the second winding through the second groove.

[0020] In one possible implementation, the body has a wire-passing hole that communicates with the through hole, and the connecting wire is disposed in the wire-passing hole.

[0021] In one possible implementation, the main body and the secondary winding are integrally formed.

[0022] In one possible implementation, the body includes a first body and a second body, with a first surface disposed on the first body and a second surface disposed on the second body, and the first body and the second body being joined together along a first direction to form the body.

[0023] On the other hand, this application provides an electronic device including a switching power supply transformer as described in any of the above.

[0024] This application provides a switching power supply transformer and an electronic device. The switching power supply transformer includes a body, a primary winding, a secondary winding, and a magnetic core. The body includes a first surface and a second surface disposed opposite each other along a first direction, and a through hole. The primary winding includes an integrally formed first winding, a second winding, and a connecting wire. The first winding is disposed on the first surface, the second winding is disposed on the second surface, and the connecting wire is disposed within the through hole. The first winding and the second winding are electrically connected through the connecting wire. The secondary winding is disposed within the body. The magnetic core passes through the through hole. This application, by placing the secondary winding inside the body and placing the first winding and the second winding respectively on the first and second surfaces and connecting them through the connecting wire, eliminates the need for a blocking plate, which is beneficial for improving the power density of the switching power supply transformer. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A simplified structural diagram of a switching power supply transformer provided in an embodiment of this application;

[0027] Figure 2 for Figure 1 A simplified structural diagram of the structure after removing the primary winding, viewed from one angle.

[0028] Figure 3 for Figure 1 A simplified structural diagram from another perspective after removing the primary winding;

[0029] Figure 4 A simplified structural diagram of a switching power supply transformer provided in another embodiment of this application.

[0030] Figure label:

[0031] 100 - Body; 101 - First surface; 102 - Second surface; 103 - Through hole; 104 - Isolation post; 105 - First protrusion; 1051 - First groove; 106 - Second protrusion; 107 - Wire hole; 110 - First body; 120 - Second body;

[0032] 210 - First winding; 220 - Second winding; 230 - Connecting wire;

[0033] 300 - Secondary winding; 310 - Secondary pin;

[0034] 410 - Pin 1; 420 - Pin 2; 430 - Pin 3; 440 - Pin 4;

[0035] 500-Wirewound Circuit Board;

[0036] X - First direction; Y - Second direction. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0038] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other. It should be noted that in the description of this embodiment, the first direction X and the second direction Y are two different directions; for example, the first direction X and the second direction Y can be perpendicular to each other.

[0039] Figure 1 A simplified structural diagram of a switching power supply transformer provided in an embodiment of this application; Figure 2 for Figure 1 A simplified structural diagram of the structure after removing the primary winding, viewed from one angle. Figure 3 for Figure 1 A simplified structural diagram from another perspective after removing the primary winding; Figure 4 A simplified structural diagram of a switching power supply transformer provided in another embodiment of this application.

[0040] Please refer to Figures 1-4 This embodiment provides a switching power supply transformer, including:

[0041] The body 100 includes a first surface 101 and a second surface 102 disposed opposite to each other along a first direction X, and a through hole 103. The through hole 103 penetrates the body 100 and connects the first surface 101 and the second surface 102.

[0042] The primary winding includes an integrally formed first winding 210, a second winding 220, and a connecting wire 230. The first winding 210 is disposed on the first surface 101, the second winding 220 is disposed on the second surface 102, and the connecting wire 230 is disposed within the through hole 103. The first winding 210 and the second winding 220 are electrically connected through the connecting wire 230. Exemplarily, the primary winding of this embodiment can be integrally wound using self-adhesive enameled wire (i.e., a cable with an adhesive layer on its surface). During preparation, the first winding 210 can be formed by winding from the outside to the inside on one side of the first surface 101; then, the wire end is passed through the through hole 103 and wound from the inside to the outside on one side of the second surface 102 to form the second winding 220. The portion located within the through hole 103 forms the connecting wire 230. It is understandable that the primary winding manufactured by the above-mentioned one-piece molding method has one wire end on one side of the first winding 210 and one wire end on one side of the second winding 220. Therefore, the entire primary winding has only two wire ends leading out. Compared with the related technology solution (in the related technology solution, both the first winding and the second winding have two wire ends leading out), the number of wire ends can be reduced.

[0043] The secondary winding 300 is disposed within the body 100. For example, a cavity for housing the secondary winding 300 may be provided within the body 100, and the secondary winding 300 may be installed into this cavity.

[0044] Furthermore, the main body 100 can be integrally formed with the secondary winding 300, which helps to reduce the number of components in the switching power supply transformer.

[0045] A magnetic core (not shown in the figure) is inserted into the through hole 103. It is understood that the magnetic core can interact electromagnetically with the primary winding and secondary winding 300, thereby realizing the function of a transformer.

[0046] In this embodiment, the secondary winding 300 is disposed inside the main body 100, and the first winding 210 and the second winding 220 are respectively disposed on the first surface 101 and the second surface 102, and connected by a connecting line 230. Compared with the solutions in related technologies, there is no need to set up a blocking plate, which is beneficial to improving the power density of the switching power supply transformer.

[0047] Please continue to refer to Figures 1-4In this embodiment, the main body 100 is internally provided with a first pin 410 and a second pin 420. A first winding 210 is electrically connected to the first pin 410, meaning the end of the first winding 210 is electrically connected to the first pin 410. A second winding 220 is electrically connected to the second pin 420, meaning the end of the second winding 220 is electrically connected to the second pin 420. The first pin 410 protrudes from the first surface 101, and the second pin 420 protrudes from the second surface 102. The first pin 410 and the second pin 420 can be connected to other electronic components.

[0048] The end of the secondary winding 300 extends out of the body 100 to form a primary pin 310; exemplarily, the body 100 may have a through hole communicating with the internal cavity, and the end of the secondary winding 300 can extend out of the through hole to form the secondary pin 310. Figure 2 and Figure 3 As shown, in this embodiment, the secondary winding 300 forms two secondary pins 310, which extend out of the first surface 101 of the body 100.

[0049] In this embodiment, the first pin 410 and the second pin 420 are located at the first end of the body 100 along the second direction Y, and the secondary pin 310 is located at the second end of the body 100 along the second direction Y. By placing the first pin 410, the second pin 420, and the secondary pin 310 at the two ends of the body along the second direction Y, the distance between the first pin 410, the second pin 420, and the secondary pin 310 can be increased, thereby meeting safety requirements.

[0050] Furthermore, the main body 100 of this embodiment is also provided with an isolation post 104, which is sleeved on the secondary pin 310. It can be understood that by setting the isolation post 104, the distance between the secondary pin 310 and the first winding 210 is increased, thereby meeting the safety requirements.

[0051] Please continue to refer to Figure 1 , Figure 2 and Figure 4 The switching power supply transformer in this embodiment also includes:

[0052] A winding circuit board 500 includes an auxiliary winding or a shielding winding, and is disposed on a first surface 101 or a second surface 102. It is understood that by providing the winding circuit board 500, the auxiliary winding or shielding winding can be integrated onto the winding circuit board 500, thereby replacing multiple windings, reducing the number of components, and further improving the power density of the switching power supply transformer. The winding circuit board 500 can be selected to be located on either the first surface 101 or the second surface 102, depending on the product's EMC (Electromagnetic Compatibility) requirements. The distance between the winding circuit board 500 and the first surface 101 or the second surface 102 can also be set according to different EMC requirements.

[0053] In this embodiment, the main body 100 is further provided with a third pin 430 and a fourth pin 440, both of which are used for electrical connection with the wire-wound circuit board 500. For example, a connection hole can be provided at one end of the wire-wound circuit board 500, and the third pin 430 and fourth pin 440 pass through the connection hole and are electrically connected to the wire-wound circuit board 500 by means of soldering or other methods. The wire-wound circuit board 500 can be connected to other electronic components through the third pin 430 and fourth pin 440.

[0054] Please continue to refer to Figure 1 and Figure 3 In one possible implementation, the body 100 of this embodiment further includes a first protrusion 105 and a second protrusion 106. The first protrusion 105 is disposed on the first surface 101, and the second protrusion 106 is disposed on the second surface 102. The first winding 210 is wound on the first protrusion 105, and the second winding 220 is wound on the second protrusion 106.

[0055] In this embodiment, the first protrusion 105 and the second protrusion 106 are provided to facilitate the winding of the first winding 210 and the second winding 220, thereby improving production efficiency.

[0056] In this embodiment, the body 100, secondary winding 300, first protrusion 105, second protrusion 106, first pin 410, second pin 420, third pin 430, fourth pin 440 and isolation post 104 can be integrally formed by injection molding, which facilitates more precise control of the distance between the first pin 410, the second pin 420 and the secondary pin 310, so as to accurately control the safety distance.

[0057] Furthermore, in this embodiment, the first protrusion 105 is provided with a first groove 1051, and the second protrusion 106 is provided with a second groove. The connecting wire 230 is electrically connected to the first winding 210 through the first groove 1051, and the connecting wire 230 is electrically connected to the second winding 220 through the second groove. It can be understood that the first groove 1051 is formed on one side of the first protrusion 105 and penetrates through the first protrusion 105; the second groove is formed on one side of the second protrusion 106 and penetrates through the second protrusion 106; a wire passage groove is provided on one side of the through hole 103 to connect the first groove 1051 and the second groove. The first groove 1051 and the second groove can correspond to each other in the first direction X, thereby facilitating the passage of the connecting wire 230.

[0058] Please continue to refer to Figure 3 In this embodiment, the main body 100 is provided with a wire through hole 107, which communicates with the through hole 103, and the connecting wire 230 is disposed in the wire through hole 107. Optionally, in the second direction Y, the wire through hole 107 can be disposed on the side of the through hole 103 facing the first pin 410. By providing the wire through hole 107, it is easier to separate the connecting wire 230 from the magnetic core, thereby improving assembly efficiency.

[0059] Please continue to refer to Figure 4 In another embodiment, the body 100 of this embodiment may include a first body 110 and a second body 120, a first surface 101 is disposed on the first body 110, a second surface 102 is disposed on the second body 120, and the first body 110 and the second body 120 are joined together along the first direction X to form the body 100.

[0060] In this embodiment, the secondary winding 300 can be integrally formed with the second body 120. The first body 110 and the second body 120 can be integrally formed by a detachable connection, which facilitates subsequent maintenance and replacement.

[0061] This embodiment also provides an electronic device, including the aforementioned switching power supply transformer.

[0062] It is understood that, due to the use of the aforementioned switching power supply transformer, the electronic device in this embodiment can have a smaller size, which is beneficial for improving power density.

[0063] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0064] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0065] It should be noted that in the description of this application, the terms "first" and "second" are used only for convenience in describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0066] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0067] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A switching power supply transformer, characterized in that, include The body includes a first surface and a second surface disposed opposite to each other along a first direction, and a through hole; The primary winding includes an integrally formed first winding, a second winding, and a connecting wire. The first winding is disposed on the first surface, the second winding is disposed on the second surface, and the connecting wire is disposed in the through hole. The first winding and the second winding are electrically connected through the connecting wire. The secondary winding is disposed within the main body; The magnetic core is inserted into the through hole.

2. The switching power supply transformer according to claim 1, characterized in that, The body is internally provided with a first pin and a second pin, the first winding is electrically connected to the first pin, and the second winding is electrically connected to the second pin, wherein the first pin protrudes from the first surface and the second pin protrudes from the second surface; The end of the secondary winding extends out of the body to form a primary pin; The first pin and the second pin are located at the first end of the body along the second direction, and the secondary pin is located at the second end of the body along the second direction.

3. The switching power supply transformer according to claim 2, characterized in that, The main body is also provided with an isolation post, which is sleeved on the secondary pin.

4. The switching power supply transformer according to claim 1, characterized in that, Also includes A wire-wound circuit board, the wire-wound circuit board including an auxiliary winding or a shielding winding, the wire-wound circuit board being disposed on the first surface or the second surface; The main body is also provided with a third pin and a fourth pin, both of which are used for electrical connection with the winding circuit board.

5. The switching power supply transformer according to claim 1, characterized in that, The body also includes a first protrusion and a second protrusion, with the first winding wound on the first protrusion and the second winding wound on the second protrusion.

6. The switching power supply transformer according to claim 5, characterized in that, The first protrusion has a first groove, the second protrusion has a second groove, the connecting wire is electrically connected to the first winding through the first groove, and the connecting wire is electrically connected to the second winding through the second groove.

7. The switching power supply transformer according to claim 1, characterized in that, The body is provided with a wire passage hole, which communicates with the through hole, and the connecting wire is disposed in the wire passage hole.

8. The switching power supply transformer according to claim 1, characterized in that, The main body and the secondary winding are integrally formed.

9. The switching power supply transformer according to claim 1, characterized in that, The body includes a first body and a second body, with a first surface disposed on the first body and a second surface disposed on the second body, and the first body and the second body are joined together along a first direction to form the body.

10. An electronic device, characterized in that, Including the switching power supply transformer as described in any one of claims 1-9.

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