Encapsulated driver transformer and electronic equipment

Abstract

The invention relates to the technical field of magnetic devices, and discloses a potting type driver transformer and electronic equipment, the potting type driver transformer comprises a skeleton, the bottom end of the skeleton is provided with a plurality of metal terminals; the winding coil is wound on the framework, and each lead connector of the winding coil is correspondingly and electrically connected with each metal terminal; the framework is sleeved with the encapsulating cover body, the encapsulating cover body is concavely arranged to form a containing cavity matched with the framework and the winding coil, the containing cavity is provided with an encapsulating space relative to the winding coil, and the encapsulating space is filled with an insulating heat dissipation medium wrapping the winding coil; and the magnetic core group is buckled on the framework and the potting cover body. The heat dissipation performance and the insulation performance of the device are optimized, and the reliability of the device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic devices, and in particular to a potted drive transformer and electronic equipment. Background Art

[0002] As an important electromagnetic component in electronic circuits, drive transformers are widely used in power conversion, signal transmission and isolation circuits. The current mainstream drive transformers are usually assembled from components such as skeletons, cores, and wire wraps through multiple processes. Their overall performance and structural stability depend to a large extent on the precision and assembly process of each component, as well as the main heat dissipation method of drive transformers in related technologies. Natural heat dissipation is the main method of heat dissipation. However, this heat dissipation method has certain disadvantages. If the current at the input end of the device is too large or the device wire diameter is too small during design, the paint film of the device wire wrap will be melted, causing defects in the client circuit board. In severe cases, the transformer will burn out. This situation needs to be changed. Summary of the invention

[0003] In view of this, the present application provides a potted drive transformer and an electronic device to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to the first aspect, the technical solution adopted is:

[0005] A potting type driving transformer, comprising:

[0006] A frame, wherein a plurality of metal terminals are arranged at the bottom end of the frame;

[0007] A winding coil, wherein the winding coil is wound on the frame, and each lead connector of the winding coil is electrically connected to each of the metal terminals;

[0008] A potting cover body, wherein the potting cover body is sleeved on the frame, and the potting cover body is concavely formed with a receiving cavity adapted to the frame and the winding coil, the receiving cavity has a potting space relative to the winding coil, and the potting space is filled with an insulating heat dissipation medium that wraps the winding coil;

[0009] A magnetic core group is buckled on the frame and the potting cover.

[0010] The present application is further configured as follows: the magnetic core group includes a first magnetic core and a second magnetic core, the first magnetic core and the second magnetic core are arranged relative to each other to form a frame structure, and the frame structure is sleeved on the skeleton and the potting cover.

[0011] The present application is further configured as follows: the first magnetic core and the second magnetic core are designed in a horizontal Π-shaped structure.

[0012] The present application is further configured as follows: the skeleton has a connecting through hole, and parts of the first magnetic core and the second magnetic core are connected in the connecting through hole, so that the magnetic core group is sleeved on the skeleton and the potting cover to form a closed magnetic circuit.

[0013] The present application is further configured as follows: the skeleton includes a winding part and an end plate part, the end plate part is integrally connected to the two ends of the winding part, the winding wire package is wound around the outer wall of the winding part, the metal terminal is connected to the end plate part, and the connecting through hole penetrates the winding part along the axial direction of the winding part.

[0014] The present application is further configured as follows: an expansion magnet is integrally connected to one side of the first magnetic core and the second magnetic core away from the connecting through hole, respectively, and the expansion magnet is attached to the top plane of the potting cover.

[0015] The present application is further configured as follows: a support boss is integrally connected to the side of the end plate portion facing away from the winding portion, a plurality of pin bumps are arranged at intervals at the bottom end of the support boss, each of the metal terminals is correspondingly embedded on each of the pin bumps, wherein the top of the support boss has a support working surface, and protective wing plates are integrally connected to both sides of the potting cover body, and the protective wing plates are affixed to the support working surface.

[0016] The present application is further configured as follows: the metal terminal includes a first connecting pin and a second connecting pin protruding from the support boss on the pin bump along the axial direction of the winding portion, a parallel interval is maintained between the first connecting pin and the second connecting pin, the lead connector of the winding wire package is electrically connected to the first connecting pin, the second connecting pin is externally connected to an external device, and the protective wing plate protrudes from the first connecting pin and the second connecting pin along the axial direction of the winding portion.

[0017] The present application is further configured as follows: fitting holes adapted to the connecting through holes are opened on both sides of the potting cover body, a frame structure for the first magnetic core and the second magnetic core is sleeved on the skeleton and the potting cover body, and assembly grooves are symmetrically opened on the inner wall of the potting cover body, and the inner wall of the assembly groove matches the side contour of the end plate portion.

[0018] According to the second aspect, the technical solution adopted is:

[0019] An electronic device comprises the encapsulated drive transformer described in any one of the above items.

[0020] To sum up, compared with the prior art, the present application discloses a potted drive transformer and an electronic device, wherein a plurality of metal terminals are arranged at the bottom end of the skeleton of the potted drive transformer, the winding wire package is wound on the skeleton, and each lead connector is electrically connected to each metal terminal, wherein the potting cover is sleeved on the skeleton, and the potting cover is recessed to form a receiving cavity adapted to the skeleton and the winding wire package, the receiving cavity has a potting space relative to the winding wire package, the potting space is filled with an insulating heat dissipation medium wrapping the winding wire package, and the magnetic core group is buckled on the skeleton and the potting cover, that is, through the above arrangement, the heat dissipation performance and insulation performance of the device are optimized, and the reliability of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the potted drive transformer of the present application;

[0023] Figure 2 is a schematic diagram of the three-dimensional structure of the potted drive transformer of the present application from another angle;

[0024] Figure 3 yes Figure 1 AA cross-sectional structure diagram;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the potted drive transformer of the present application with a hidden potting cover;

[0026] Figure 5 It is a three-dimensional structural diagram of the skeleton of the present application;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the potting cover body of the present application. DETAILED DESCRIPTION

[0028] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0029] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0030] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0032] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] The technical solutions shown in this application will be described in detail below through specific embodiments. It should be noted that the description order of the following embodiments is not intended to limit the priority order of the embodiments.

[0034] See also Figures 1 to 6 The potted drive transformer of the embodiment of the present application includes a frame 1, a winding wire package 3, a potting cover 4 and a magnetic core group 5.

[0035] During the specific implementation process, a plurality of metal terminals 2 are arranged at the bottom end of the skeleton 1, the winding coil 3 is wound on the skeleton 1, each lead connector of the winding coil 3 is electrically connected to each metal terminal 2, the potting cover 4 is sleeved on the skeleton 1, and the potting cover 4 is recessed to form a receiving cavity 41 adapted to the skeleton 1 and the winding coil 3, the receiving cavity 41 has a potting space 6 relative to the winding coil 3, and the potting space 6 is filled with an insulating heat dissipation medium that wraps the winding coil 3, and at the same time, the magnetic core group 5 is buckled on the skeleton 1 and the potting cover 4.

[0036] In the potted drive transformer of this embodiment, each lead connector at the bottom of the skeleton 1 is electrically connected to each metal terminal 2 to provide a stable electrical connection point for the lead of the winding coil 3 through the metal terminal 2. The potting cover 4 forms a potting space 6 with the skeleton 1 and the winding coil 3 through the recessed accommodating cavity 41. The insulating heat dissipation medium filled in the potting space 6 can tightly wrap the winding coil 3 to conduct the heat generated by the device winding during operation, so as to improve the heat dissipation efficiency of the winding coil 3, effectively avoid performance degradation or insulation failure caused by overheating, maintain the stability of the device during high-power operation, and extend the service life of the transformer.

[0037] Among them, the filling design of the insulating heat dissipation medium in the potting space 6 plays a role of heat conduction and insulation, that is, the structural design of the accommodating cavity 41 ensures that the insulating heat dissipation medium can completely fill the gap around the winding wire package 3 and the skeleton 1, eliminate the air layer, and ensure the heat dissipation and insulation effects, and the magnetic core group 5 is buckled on the skeleton 1 and the potting cover 4 to form a complete closed magnetic circuit, construct a complete drive transformer composition, and reduce electromagnetic interference problems caused by magnetic flux leakage.

[0038] That is, the skeleton 1, the potting cover 4, the winding wire package 3 and the magnetic core group 5 are integrated and assembled by sleeve and buckle, and the structure is compact. The protective design of the potting cover 4 and the accommodating cavity 41 effectively reduces the influence of the external environment (such as humidity, dust, vibration, etc.) on the internal components, improves the mechanical strength and impact resistance of the entire transformer, prevents the performance degradation caused by the changes in the external environment, ensures the long-term stable operation of the device, and solves the problems of paint film melting loss of the device wire package due to excessive current at the device input end or too small device wire diameter during design, client circuit board defects and driving transformer burning.

[0039] It should be noted that the insulating heat dissipation medium of this embodiment may include silicone material, epoxy resin material or polyurethane material according to specific application scenarios and performance requirements. Preferably, the insulating heat dissipation medium is a thermally conductive insulating gel.

[0040] In one embodiment, the skeleton 1 is formed by one-piece injection molding. The one-piece injection molding process not only simplifies the production process and reduces the complexity of assembly, but also provides excellent insulation protection to prevent the device from being corroded by external moisture, dust and corrosive substances, thereby improving the environmental adaptability of the product, thereby ensuring the close connection between the skeleton 1 and the potting cover 4 and the magnetic core group 5. This close combination can reduce the risks of loosening and vibration of various parts of the device, further enhance the overall stability and durability of the structure, thereby meeting the needs of high-reliability applications of potted drive transformers.

[0041] Preferably, the skeleton 1 is made of at least one of PPS, Bakelite or PA. Therefore, by selecting the skeleton 1 made of PPS or PA material, the dimensional stability of the skeleton 1 in a high temperature environment can be significantly improved, and the device failure problem caused by thermal expansion or contraction can be avoided. The Bakelite material has excellent electrical insulation properties, which can effectively reduce the interference of the skeleton 1 to the external electric field, ensuring the safe and reliable operation of the transformer. The PPS material is particularly suitable for humid and corrosive working environments due to its excellent chemical corrosion resistance and moisture resistance, and the PA material is also suitable for scenes that require impact resistance and vibration resistance. Among them, the high heat resistance of the PPS material makes it suitable for the application of high-frequency and high-power electronic components. The PA material is suitable for application scenarios that need to take into account both mechanical strength and durability, providing higher design flexibility. Then, by selecting PPS, Bakelite or PA material according to actual needs, the production cost can be reduced while ensuring that the performance meets the requirements, so as to adapt to diverse usage needs and significantly improve the overall performance of the device.

[0042] In one embodiment, the accommodating cavity 41 has a U-shaped structure relative to the potting space 6 formed by the winding coil 3, that is, the inner wall of the potting cover 4 and the outer surface of the winding coil 3 form a U-shaped potting space, thereby ensuring that the insulating heat dissipation medium is fully and smoothly filled in the accommodating cavity 41.

[0043] In the specific implementation process, the magnetic core group 5 includes a first magnetic core 51 and a second magnetic core 52, and the first magnetic core 51 and the second magnetic core 52 are arranged relative to each other to form a frame structure. The frame structure is sleeved on the skeleton 1 and the potting cover 4. The frame structure constructed by the first magnetic core 51 and the second magnetic core 52 has overall rigidity and can provide higher stability under external stress. Among them, the frame structure is sleeved on the skeleton 1 and the potting cover 4 to further enhance the installation stability of the magnetic core group 5 through tight fit to avoid performance degradation due to looseness. At the same time, the relative arrangement of the first magnetic core 51 and the second magnetic core 52 can make the magnetic field distribution of the device more uniform, avoid magnetic flux leakage, and improve magnetic properties, that is, improve the magnetic flux density utilization rate of the transformer, reduce leakage magnetic loss, and improve the conversion efficiency of the transformer.

[0044] Furthermore, the structural design of the frame structure being sleeved on the skeleton 1 and the potting cover 4 enables part of the magnets of the first magnetic core 51 and the second magnetic core 52 to be externally positioned, which is beneficial for conducting the heat generated during the operation of the device to the outside and also facilitates rapid installation in the automated assembly process.

[0045] Preferably, the first magnetic core 51 and the second magnetic core 52 are designed in a horizontal Π-shaped structure. The Π-shaped structure design can make the contact area of ​​the first magnetic core 51 and the second magnetic core 52 in the horizontal direction relative to the skeleton 1 larger, thereby enhancing the overall rigidity of the magnetic core group 5. The horizontal Π-shaped structure is symmetrically arranged, which helps to reduce deformation or looseness caused by external force or vibration, and improve the vibration resistance of the drive transformer in a complex mechanical environment. When the Π-shaped structure is arranged horizontally, the first magnetic core 51 and the second magnetic core 52 can fit the skeleton 1 and the winding coil 3 more closely, reducing the air gap between the magnetic cores, making the magnetic circuit more uniform, reducing leakage flux, reducing magnetic resistance, and improving the utilization rate of the device's magnetic flux density.

[0046] In addition, the horizontal Π-shaped structure design makes the size design of the first magnetic core 51 and the second magnetic core 52 more compact, and at the same time forms a complete magnetic field shielding frame outside the winding coil 3, reducing the overall size of the drive transformer and facilitating integration into miniaturized electronic devices to improve device space utilization and meet the demand for high power density devices.

[0047] Furthermore, the skeleton 1 has a connecting through hole 13, and a part of the first magnetic core 51 and the second magnetic core 52 are connected in the connecting through hole 13, so that the magnetic core group 5 is sleeved on the skeleton 1 and the potting cover 4 to form a closed magnetic circuit.

[0048] The connecting through hole 13 designed through the skeleton 1 provides a structural basis for the connection between the first magnetic core 51 and the second magnetic core 52 and the skeleton 1, making the connection between the magnetic cores tighter and improving the closure of the magnetic circuit. That is, the magnetic core part is inserted into the connecting through hole 13 of the skeleton 1, and the docking area of ​​the first magnetic core 51 and the second magnetic core 52 is physically guided by the connecting through hole 13 to ensure assembly accuracy and position stability. At the same time, the connecting through hole 13 plays an additional fixing role for the magnetic core group 5 to prevent loosening or displacement due to vibration or external force during use.

[0049] In one embodiment, the skeleton 1 includes a winding portion 11 and an end plate portion 12, the end plate portion 12 is integrally connected to both ends of the winding portion 11, the winding wire package 3 is wound on the outer wall of the winding portion 11, the metal terminal 2 is connected to the end plate portion 12, and the connecting through hole 13 penetrates the winding portion 11 along the axial direction of the winding portion 11.

[0050] Specifically, the winding portion 11 and the end plate portion 12 are connected through an integrated molding process to ensure the stability and processing accuracy of the overall structure of the skeleton 1. The winding portion 11 is used to carry the winding coil 3, and the winding coil 3 can be evenly wound on the winding portion 11 according to a preset winding method, thereby realizing efficient electromagnetic energy conversion. The end plate portion 12 is located at both ends of the winding portion 11, and can serve as a supporting structure to provide a fixed point for the winding portion 11 and improve the overall mechanical strength. The metal terminal 2 is arranged on the end plate portion 12 and is tightly connected thereto. Then, the end plate portion 12 not only provides a stable installation position for the metal terminal 2, but also ensures the electrical connection between the metal terminal 2 and the lead connector of the winding coil 3. Such a structural design optimizes the arrangement of the windings, simplifies the electrical connection path, improves the reliability and efficiency of the device connection, and improves the durability and service life of the product.

[0051] Furthermore, the connecting through hole 13 is designed to penetrate along the axial direction of the winding portion 11, ensuring that the docking parts of the first magnetic core 51 and the second magnetic core 52 can be accurately aligned in the connecting through hole 13, providing a convenient guide for the rapid positioning and assembly of the magnetic core group 5, and also forming an axial heat dissipation channel, which, combined with the insulating heat dissipation medium in the potting cover 4, further enhances the heat dissipation capacity of the device.

[0052] Preferably, the first magnetic core 51 and the second magnetic core 52 are respectively integrally connected with an extended magnet 53 on one side away from the connecting through hole 13, and the extended magnet 53 is attached to the top plane of the potting cover 4, wherein the extended magnet 53 can optimize the distribution of the magnetic field, compensate for the magnetic field weakening area that may exist at the far end of the magnetic core, and can effectively isolate the magnetic field overflow at the far end of the magnetic core group 5, reduce the impact of magnetic interference on surrounding electronic components, optimize the overall circuit performance, ensure the electromagnetic compatibility between components, and is particularly suitable for high-density electronic equipment to enhance the power transmission capability of the device. The extended magnet 53 is attached to the top plane of the potting cover 4 to ensure the close fit between the magnetic core group 5 and the potting cover 4, forming multi-point support, ensuring the accuracy of assembly between components, simplifying the assembly process, improving production efficiency and product consistency, avoiding the loosening of the magnetic core due to vibration or mechanical shock, and improving the impact resistance of the device.

[0053] In the specific implementation process, a support boss 14 is integrally connected to one side of the end plate portion 12 away from the winding portion 11 , a plurality of pin bumps 15 are arranged at intervals at the bottom end of the support boss 14 , and each metal terminal 2 is correspondingly embedded in each pin bump 15 .

[0054] Then, the support boss 14 is integrally connected to the end plate portion 12, which enhances the overall rigidity of the end plate structure and provides a stable support for the installation of the metal terminal 2. The support boss 14, as an extension structure of the end plate portion 12, provides an air-avoiding space for the arrangement of the metal terminal 2. Several pin bumps 15 avoid excessive concentration between the metal terminals 2, effectively improve the insulation distance between the metal terminals 2, and also provide an additional heat dissipation path for the embedding of the metal terminal 2, while increasing the heat dissipation area.

[0055] Among them, the top of the supporting boss 14 has a supporting working surface 141, and the two sides of the potting cover 4 are integrally connected with protective wing plates 42, and the protective wing plates 42 are fitted on the supporting working surface 141, thereby ensuring the stable connection between the potting cover 4 and the skeleton 1, and avoiding the potting cover 4 from being deformed or damaged due to excessive pressure or external force during the assembly process, so as to reduce the loosening or damage of components caused by improper support. In addition, the protective wing plates 42, while playing a protective role, also help to guide the heat dissipation flow of the device. The fit between its shape and the supporting working surface 141 enhances the heat dissipation path of the winding wire package 3, thereby ensuring the heat dissipation effect of the device, ensuring that the product maintains a stable temperature under high load or long-term operation, and extending its service life.

[0056] Optionally, the metal terminal 2 includes a first connection pin 21 and a second connection pin 22 protruding from the support boss 14 on the pin bump 15 along the axial direction of the winding portion 11, and a parallel interval is maintained between the first connection pin 21 and the second connection pin 22. The lead connector of the winding coil 3 is electrically connected to the first connection pin 21, and the second connection pin 22 is externally connected to an external device.

[0057] A parallel interval is maintained between the first connecting pin 21 and the second connecting pin 22, thereby effectively reducing the possibility of electromagnetic interference and signal coupling. The second connecting pin 22 is used to connect to an external device to provide an interface for the input or output of the device to achieve functional expansion. Then, the metal terminal 2 can not only achieve reliable connection in a limited space, but also improve the electrical performance of the overall structure. For example, the parallel interval design can optimize the electrical insulation performance and prevent the occurrence of short circuit or interference problems. At the same time, the protruding structure design of the metal terminal 2 helps to simplify the installation process and improve the efficiency of the device in the actual assembly process. In addition, the metal terminal 2 is embedded in one side of the end plate portion 12, and the stability of its installation position is enhanced, thereby further improving the long-term reliability and environmental adaptability of the device.

[0058] It should be noted that the protective wing plate 42 protrudes from the first connecting pin 21 and the second connecting pin 22 along the axial direction of the winding portion 11, thereby providing a protective space for the first connecting pin 21 and the second connecting pin 22 in terms of physical structure for effective physical protection to avoid damage to the connecting pins. It can also buffer and disperse pressure under the action of external force to avoid direct impact on the first connecting pin 21 and the second connecting pin 22, thereby improving the impact resistance and damage resistance of the device. The protruding design of the protective wing plate 42 can provide clear positioning and spatial separation during the assembly process, making it easier for the first connecting pin 21 and the second connecting pin 22 to be plugged in or joined in a fixed position to avoid misoperation.

[0059] In the specific implementation process, fitting holes 43 compatible with the connecting through holes 13 are opened on both sides of the potting cover body 4, and the frame structure of the first magnetic core 51 and the second magnetic core 52 is sleeved on the skeleton 1 and the potting cover body 4, ensuring that the frame structure of the first magnetic core 51 and the second magnetic core 52 can be accurately installed between the skeleton 1 and the potting cover body 4 to form a tight fixed relationship, and assembly grooves 44 are symmetrically opened on the inner wall of the potting cover body 4, and the inner wall of the assembly groove 44 matches the side contour of the end plate part 12, so as to ensure that the potting cover body 4 is accurately sleeved on the skeleton 1, thereby ensuring that the accommodating cavity 41 forms a tight potting space 6 relative to the winding wire package 3, and the high density of the insulating heat dissipation medium filled in the potting space 6, that is, the potting cover body 4 is designed through the fitting holes 43 and the assembly grooves 44, which not only realizes precise assembly positioning, but also ensures the stable connection between the potting cover body and the skeleton 1 and the magnetic core group 5, so that the entire component is not easy to loosen during use, thereby improving the reliability of the device.

[0060] The present application also discloses an electronic device, including a potted drive transformer as in any of the above embodiments. For other working principles and processes of the electronic device of this embodiment, please refer to the description of the potted drive transformer in the above embodiment, which will not be repeated here.

[0061] The above is a detailed introduction to the encapsulated drive transformer and electronic device provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. It should be noted that in the present application, the descriptions of each embodiment have their own emphasis. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0062] The above are only preferred embodiments of the present application, and the patent scope of the present application is not limited thereto. The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of this application, or directly or indirectly used in other related technical fields, as long as there is no contradiction in the combination of these technical features, are equally included in the patent protection scope of the present application.

Claims

1. A potted drive transformer, characterized in that: include: A frame, wherein a plurality of metal terminals are arranged at the bottom end of the frame; A winding coil, wherein the winding coil is wound on the frame, and each lead connector of the winding coil is electrically connected to each of the metal terminals; A potting cover body, wherein the potting cover body is sleeved on the frame, and the potting cover body is concavely formed with a receiving cavity adapted to the frame and the winding coil, the receiving cavity has a potting space relative to the winding coil, and the potting space is filled with an insulating heat dissipation medium that wraps the winding coil; A magnetic core group is buckled on the frame and the potting cover.

2. The potted drive transformer according to claim 1, characterized in that: The magnetic core group includes a first magnetic core and a second magnetic core. The first magnetic core and the second magnetic core are arranged relative to each other to form a frame structure. The frame structure is sleeved on the frame and the potting cover.

3. The potted drive transformer according to claim 2, characterized in that: The first magnetic core and the second magnetic core are designed in a horizontal Π-shaped structure.

4. The potted drive transformer according to claim 2, characterized in that: The skeleton has a connecting through hole, and parts of the first magnetic core and the second magnetic core are butted in the connecting through hole, so that the magnetic core assembly is sleeved on the skeleton and the potting cover to form a closed magnetic circuit.

5. The potted drive transformer according to claim 4, characterized in that: The skeleton includes a winding part and an end plate part, the end plate part is integrally connected to the two ends of the winding part, the winding wire package is wrapped around the outer wall of the winding part, the metal terminal is connected to the end plate part, and the connecting through hole penetrates the winding part along the axial direction of the winding part.

6. The potted drive transformer according to claim 4, characterized in that: The first magnetic core and the second magnetic core are respectively integrally connected with expansion magnets at one side away from the connecting through hole, and the expansion magnets are attached to the top plane of the potting cover.

7. The potted drive transformer according to claim 5, characterized in that: A supporting boss is integrally connected to the side of the end plate portion facing away from the winding portion, and a plurality of pin bumps are arranged at intervals at the bottom end of the supporting boss, and each of the metal terminals is correspondingly embedded on each of the pin bumps, wherein the top of the supporting boss has a supporting working surface, and protective wing plates are integrally connected to both sides of the potting cover body, and the protective wing plates are affixed to the supporting working surface.

8. The potted drive transformer according to claim 7, characterized in that: The metal terminal includes a first connecting pin and a second connecting pin protruding from the supporting boss on the pin bump along the axial direction of the winding portion, a parallel interval is maintained between the first connecting pin and the second connecting pin, the lead connector of the winding wire package is electrically connected to the first connecting pin, the second connecting pin is connected to an external device, and the protective wing plate protrudes from the first connecting pin and the second connecting pin along the axial direction of the winding portion.

9. The potted drive transformer according to claim 5, characterized in that: Both sides of the potting cover body are provided with fitting holes matched with the connecting through holes, and the frame structure of the first magnetic core and the second magnetic core is sleeved on the skeleton and the potting cover body, and the inner wall of the potting cover body is symmetrically provided with assembly grooves, and the inner wall of the assembly groove matches the side contour of the end plate.

10. An electronic device, characterized in that: It comprises the encapsulated drive transformer as described in any one of claims 1 to 9.

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