Molded driving transformer and electronic apparatus

Abstract

The present application relates to the technical field of magnetic devices. Disclosed are a molded driving transformer and an electronic apparatus. The molded driving transformer comprises: an integrated framework, a plurality of metal terminals being arranged at the bottom end of the integrated framework; a winding coil, the winding coil being wound around the integrated framework, lead connectors that correspond to the metal terminals on a one-to-one basis being led out from the winding coil, and the lead connectors being electrically connected to the metal terminals; a first magnetic core, arranged in the integrated framework and wrapped in the integrated framework; and a second magnetic core, arranged at the top end of the integrated framework and keeping an adjustable external gap with the winding coil, two ends of the first magnetic core extending towards the top end of the integrated framework, protruding from the integrated framework, and then fixedly connecting to the second magnetic core, so as to form a closed magnetic circuit. The present application enhances the magnetic core strength and safety distances of devices, and improves the reliability of the devices.

Description

Plastic-encapsulated drive transformers and electronic equipment Technical Field

[0001] This application relates to the field of magnetic device technology, specifically to a plastic-encapsulated drive transformer and electronic device. Background Technology

[0002] As a crucial electromagnetic component in electronic circuits, drive transformers are widely used in power conversion, signal transmission, and isolation circuits. Current mainstream drive transformers are typically assembled from components such as the frame, core, and coil through multiple processes. Their overall performance and structural stability largely depend on the precision of each component and the assembly process. In existing technologies, the core is usually assembled after winding, requiring additional processing steps. This not only increases the complexity of the production process but also raises costs. Furthermore, since the core needs to be assembled into the frame using external force, this method easily leads to mechanical stress concentration, causing core cracking or damage, especially in high-frequency, high-power applications. Moreover, with increasingly stringent safety regulations for electronic components, existing drive transformers often require baffles or additional insulating sheets on the frame to improve insulation performance. However, while optimizing electrical performance, this approach also increases design complexity, expands the overall size of the transformer, and hinders the miniaturization of components. These issues need to be addressed. Summary of the Invention

[0003] In view of this, this application provides a plastic-encapsulated drive transformer and electronic device to solve the aforementioned technical problems.

[0004] To achieve the above objectives, based on the first aspect, the technical solution adopted is as follows:

[0005] A plastic-encapsulated drive transformer, comprising:

[0006] An integrated frame, wherein a number of metal terminals are arranged at the bottom end of the integrated frame;

[0007] The winding coil is wound on the integral frame, and the winding coil has lead wire connectors that correspond one-to-one with the metal terminals. The lead wire connectors are electrically connected to the metal terminals.

[0008] The first magnetic core is disposed in the integrated frame and is covered by the integrated frame;

[0009] The second magnetic core is disposed at the top of the integrated frame and maintains an adjustable external gap with the winding coil. The two ends of the first magnetic core extend toward the top of the integrated frame and are fixedly connected to the second magnetic core after protruding from the integrated frame to form a closed magnetic circuit.

[0010] This application is further configured such that the first magnetic core and the integral skeleton are integrally injection molded.

[0011] This application further specifies that: the integrated frame includes a winding portion and an end plate portion, the end plate portion is integrally connected to both ends of the winding portion, the winding coil is wound around the winding portion, and the metal terminal is connected to the end plate portion.

[0012] This application further specifies that: the first magnetic core is connected and communicates with the winding portion and the end plate portion within the integrated frame.

[0013] This application is further configured such that: the first magnetic core has adjusting portions arranged opposite to each other at both ends, the adjusting portions protruding from the end plate portion toward the top of the integrated frame, and the adjusting portions are fixedly connected to the second magnetic core.

[0014] This application is further configured such that the vertical height of the adjustment part relative to the end plate part is greater than or equal to the adjustable external gap.

[0015] This application further specifies that: the second magnetic core is arranged in a rectangular structure, and the second magnetic core has a set thickness, wherein the set thickness is ≥0.5mm.

[0016] This application further specifies that: the first magnetic core and the second magnetic core structurally comprise at least one of a UU-type magnetic core, an EP-type magnetic core, an ER-type magnetic core, or an EF-type magnetic core; and / or

[0017] The integrated frame is made of at least one material selected from PPS, bakelite, or PA; and / or

[0018] The insulation layer thickness of the integrated frame is ≥0.1mm.

[0019] This application is further configured such that: the metal terminal is embedded on the side of the end plate portion away from the second magnetic core, and includes a first connecting pin and a second connecting pin protruding from the end plate portion, the first connecting pin and the second connecting pin are kept parallel and spaced apart, the lead connector is electrically connected to the first connecting pin, and the second connecting pin is connected to an external device.

[0020] According to the second aspect, the technical solution adopted is as follows:

[0021] An electronic device comprising the encapsulated drive transformer described in any of the preceding claims.

[0022] In summary, compared with the prior art, this application discloses a plastic-encapsulated drive transformer and electronic device. The plastic-encapsulated drive transformer includes an integrated frame, a winding coil, a first magnetic core, and a second magnetic core. The bottom end of the integrated frame has several metal terminals arranged thereon. The winding coil is wound on the integrated frame, and the winding coil has lead wire connectors that correspond one-to-one with the metal terminals. The lead wire connectors are electrically connected to the metal terminals. The first magnetic core is disposed in the integrated frame and is covered by the integrated frame. The second magnetic core is disposed at the top of the integrated frame and maintains an adjustable external gap with the integrated frame and the winding coil. The two ends of the first magnetic core extend toward the top of the integrated frame and are fixedly connected to the second magnetic core after protruding from the integrated frame to form a closed magnetic circuit. That is, through the above configuration, the magnetic core strength and safety distance of the device are enhanced, and the reliability of the device is improved. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 is a three-dimensional structural schematic diagram of a plastic-encapsulated drive transformer according to an embodiment of this application;

[0025] Figure 2 is a front view of the encapsulated drive transformer according to an embodiment of this application;

[0026] Figure 3 is a partial structural schematic diagram of the encapsulated drive transformer according to an embodiment of this application;

[0027] Figure 4 is a cross-sectional view of the internal structure of the encapsulated drive transformer according to an embodiment of this application. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0030] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0031] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0032] In the description of this application, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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 on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed 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 order of description of the following embodiments is not intended to limit the priority of the embodiments.

[0034] Please refer to Figures 1 to 4. The encapsulated drive transformer of this application embodiment includes an integral frame 1, a winding coil 3, a first magnetic core 4, and a second magnetic core 5.

[0035] In the specific implementation process, a number of metal terminals 2 are arranged at the bottom of the integrated frame 1, the winding coil 3 is wound on the integrated frame 1, and the winding coil 3 has lead wire connectors that correspond one-to-one with the metal terminals 2. The lead wire connectors are electrically connected to the metal terminals 2. The first magnetic core 4 is set in the integrated frame 1 and is covered by the integrated frame 1. The second magnetic core 5 is arranged at the top of the integrated frame 1 and maintains an adjustable external gap with the winding coil 3. The two ends of the first magnetic core 4 extend towards the top of the integrated frame 1, and the two ends of the first magnetic core 4 are fixedly connected to the second magnetic core 5 after protruding from the integrated frame 1 to form a closed magnetic circuit.

[0036] The encapsulated drive transformer optimizes the electrical connection path of the device by arranging several metal terminals 2 at the bottom of the integrated frame 1, reducing the lead joint length and electrical impedance of the winding coil 3, thereby reducing circuit energy consumption.

[0037] The lead connector of the winding coil 3 can be wound around the metal terminal 2 and then soldered by tinning, thereby realizing the electrical connection between the lead connector and the metal terminal 2.

[0038] Furthermore, the first magnetic core 4 is disposed inside the integrated frame 1 and is encapsulated by the plastic structure of the integrated frame 1, thereby forming a compact and stable magnetic circuit structure. The encapsulation design of the integrated frame 1 not only improves the structural strength of the magnetic core, but also effectively reduces the mechanical stress of the magnetic core caused by the environment, reducing the risk of magnetic core cracking or damage caused by stress. At the same time, the integrated frame 1 can also isolate the magnetic core from external moisture and dust corrosion, improving the environmental adaptability and service life of the device.

[0039] Furthermore, the second magnetic core 5 is located at the top of the integrated frame 1 and maintains an adjustable external gap with the winding coil 3. This adjustable external gap design allows the air gap length of the device's magnetic circuit to be flexibly adjusted according to specific application requirements to optimize magnetic performance indicators, such as magnetic flux density and induction intensity. At the same time, the two ends of the first magnetic core 4 extend towards the top of the integrated frame 1 and are fixedly connected to the second magnetic core 5 after protruding from the integrated frame 1, thereby forming a stable and continuous magnetic circuit and further improving the magnetic coupling efficiency of the device. That is, the external structure design of the second magnetic core 5 reduces the overall board area occupied by the device product while increasing the safety distance of the product, thereby meeting the miniaturization process of the device.

[0040] In this embodiment of the encapsulated drive transformer, the integrated frame 1, by covering the first magnetic core 4, not only effectively reduces the mechanical stress concentration of the magnetic core caused by assembly, but also prevents damage to the magnetic core caused by external impact during transportation or use, greatly improving the structural stability and reliability of the transformer. Furthermore, the integrated frame 1 reduces the need for additional insulating sheets and baffle structures, while optimizing the space utilization of the magnetic core and frame, resulting in a smaller overall transformer volume. This helps meet the increasingly miniaturized development needs of electronic devices. Directly encapsulating the first magnetic core 4 within the frame 1 eliminates the need for additional assembly steps, significantly reducing the complexity of the production process and improving manufacturing efficiency. Simultaneously, the first magnetic core 4 and the second magnetic core 5, through a fixed connection, form a stable magnetic circuit, reducing magnetic flux leakage loss and thus improving the electromagnetic conversion efficiency of the transformer. The adjustable external gap design between the second magnetic core 5 and the winding coil 3 allows the air gap length to be flexibly adjusted according to application requirements. By optimizing the air gap length, magnetic properties can be adjusted for different operating frequencies and power requirements, thereby achieving greater design flexibility and adaptability.

[0041] It should be noted that the first magnetic core 4 and the second magnetic core 5 can be fixed by adhesive bonding. Adhesive bonding of the first magnetic core 4 and the second magnetic core 5 can reduce stress concentration problems that may be caused by mechanical connection while ensuring the fixing strength, thereby further improving the stability and durability of the overall structure. In addition, adhesive bonding can also achieve better airtightness, avoiding the influence of external environmental factors (such as moisture and dust) on the magnetic core joint, thereby extending the service life of the device and improving its operational reliability.

[0042] Preferably, the first magnetic core 4 and the integrated frame 1 are integrally injection molded, so that the first magnetic core 4 is directly embedded into the integrated frame 1 and is covered by the integrated frame 1. The integral injection molding process not only simplifies the production process and reduces the complexity of assembly, but also effectively avoids damage to the magnetic core due to mechanical stress during subsequent assembly. At the same time, integral injection molding also provides excellent insulation protection, preventing external moisture, dust and corrosive substances from eroding the magnetic core, and improving the environmental adaptability of the product. In addition, the tight connection between the integrated frame 1 and the first magnetic core 4 can reduce the risk of loosening and vibration, further enhancing the overall stability and durability of the structure, thereby meeting the requirements of high reliability applications.

[0043] In the specific implementation process, the integrated frame 1 includes a winding part 11 and an end plate part 12. The end plate part 12 is integrally connected to both ends of the winding part 11, the winding coil 3 is wound around the winding part 11, and the metal terminal 2 is connected to the end plate part 12.

[0044] The winding section 11 and the end plate section 12 are connected by an integral molding process to ensure the stability and processing accuracy of the overall skeleton structure. The winding section 11 is used to carry the winding coil 3. The winding coil 3 can be evenly wound on the winding section 11 according to a preset winding method, thereby achieving efficient electromagnetic energy conversion. The end plate section 12 is located at both ends of the winding section 11 and serves as a support structure, providing fixing points for the winding section 11 and improving the overall mechanical strength. The metal terminal 2 is set on the end plate section 12 and tightly connected to it. Thus, the end plate section 12 not only provides a stable installation position for the metal terminal 2, but also ensures the electrical connection between the metal terminal and the lead connector of the winding coil 3. This structural design optimizes the winding arrangement, simplifies the electrical connection path, and improves the reliability and efficiency of device connection. At the same time, the end plate section 12 can also play a certain role in isolation and protection, preventing external factors from affecting the metal terminal 2 and the winding coil 3, thereby improving the durability and service life of the product.

[0045] Preferably, the metal terminal 2 is embedded on the side of the end plate portion 12 away from the second magnetic core 5, and includes a first connecting foot 21 and a second connecting foot 22 protruding from the end plate portion 12. The first connecting foot 21 and the second connecting foot 22 are kept parallel and spaced apart. The lead connector is electrically connected to the first connecting foot 21, and the second connecting foot 22 is connected to an external device.

[0046] The metal terminal 2 is embedded on the side of the end plate 12 away from the second magnetic core 5, which can optimize the compactness of the overall structure while ensuring the stability of the electrical connection. The first connecting pin 21 and the second connecting pin 22 are kept parallel to each other, thereby effectively reducing the possibility of electromagnetic interference and signal coupling. The second connecting pin 22 is used to connect to external devices, providing an interface for the input or output of the device and realizing functional expansion. Thus, 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 spacing design can optimize electrical insulation performance and prevent short circuits 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, since the metal terminal 2 is embedded on one side of the end plate 12, the stability of its installation position is enhanced, thereby further improving the long-term reliability and environmental adaptability of the device.

[0047] In this embodiment, the first magnetic core 4 is connected and communicates with the winding portion 11 and the end plate portion 12 within the integrated frame 1. Specifically, the first magnetic core 4 is arranged to extend through the integrated frame 1 and is directly adjacent to the winding portion 11, thereby providing a reliable magnetic field guidance function and improving the electromagnetic conversion efficiency of the winding coil 3. At the same time, the end of the first magnetic core 4 is connected to the end plate portion 12 through structural fixing or covering connection, which further enhances the mechanical strength of the integrated frame 1 and avoids the problem of magnetic core displacement or loosening caused by external vibration or impact. While ensuring the magnetic circuit performance, the overall rigidity of the integrated frame 1 is improved, enhancing the long-term reliability of the transformer. In addition, through the communication effect of the first magnetic core 4, the structure between the winding portion 11 and the end plate portion 12 achieves an integrated design, further reducing the assembly steps between independent components, thereby simplifying the production process, improving manufacturing efficiency, and reducing product costs.

[0048] In the specific implementation process, the two ends of the first magnetic core 4 have relatively arranged adjustment parts 41. The adjustment parts 41 protrude from the end plate part 12 towards the top of the integrated frame 1, and the adjustment parts 41 are fixedly connected to the second magnetic core 5 to maintain an adjustable external gap between the second magnetic core 5 and the winding coil 3.

[0049] The adjustment unit 41, through precise structural and dimensional design, enables reliable connection to the second magnetic core 5 and allows users to adjust the relative position of the second magnetic core 5 according to specific needs, thereby changing the air gap length between it and the winding coil 3. This adjustable external gap structure design provides flexibility for optimizing magnetic performance. For example, by adjusting the air gap length, the magnetic reluctance of the magnetic circuit can be controlled, thereby precisely adjusting the magnetic flux density and other key parameters of the device to adapt to different frequency and power application scenarios.

[0050] Furthermore, the protruding design of the adjustment part 41 not only ensures a stable connection between the first magnetic core 4 and the second magnetic core 5, but also avoids the degradation of magnetic circuit performance caused by magnetic core misalignment or poor contact. The design of the adjustment part 41 combines the structural features of the integrated frame 1, enabling the entire component to improve magnetic performance while possessing excellent mechanical strength and reliability. That is, through the fixed connection structure between the adjustment part 41 and the second magnetic core 5, not only can the requirements for magnetic performance optimization be met, but the adaptability of the device in different working environments is also significantly improved, providing technical support for the wide application in multiple scenarios.

[0051] In one embodiment, the first magnetic core 4 has a U-shaped structure design.

[0052] Optionally, the adjustment part 41 may be a rectangular structure that protrudes vertically from the end plate part 12.

[0053] In this embodiment, the vertical height of the adjustment unit 41 relative to the end plate 12 is set to H, and the adjustable external gap between the second magnetic core 5 and the winding coil 3 is set to J, then H≥J. Therefore, by setting H≥J, the adjustment unit 41 can provide sufficient height support while reserving enough adjustable air gap space between the second magnetic core 5 and the winding coil 3. Specifically, the adjustment unit 41 can provide a stable support foundation for the second magnetic core 5, avoiding magnetic core wobbling or unstable connection problems caused by excessive air gap adjustment range. This design also prevents accidental contact between the outer conductor of the winding coil 3 and the second magnetic core 5, ensuring insulation safety and safety distance. Furthermore, H≥J can meet the adjustment requirements for air gap length under different working conditions. Users can optimize performance by adjusting J according to the magnetic characteristics of the circuit, while ensuring that the height range of the adjustment unit 41 can completely cover the maximum value of air gap adjustment. Thus, through this design parameter constraint, not only is the rationality of the overall structure and functional design of the device improved, but the application adaptability and performance stability of the component are further enhanced.

[0054] In the specific implementation process, the second magnetic core 5 is arranged in a rectangular structure and has a set thickness of ≥0.5mm, so as to improve the overall performance and reliability of the device by reasonably selecting the geometric shape and thickness parameters of the magnetic core.

[0055] The second magnetic core 5 has a rectangular structure, which facilitates the formation of an efficient magnetic circuit closure design with the first magnetic core 4 and reduces magnetic flux leakage. This structure also has a large planar contact area, enabling stable connection with the adjustment part 41 and improving structural stability. Furthermore, the thickness of the second magnetic core 5 is set to be no less than 0.5mm. This parameter ensures the strength of the magnetic core while providing sufficient magnetic permeability. The increased thickness effectively reduces the risk of saturation of the magnetic core under high-frequency operation and adapts to higher current density requirements. In other words, the second magnetic core 5 with a thickness ≥ 0.5mm has significant advantages in mechanical strength, effectively resisting external stress or vibration and avoiding breakage or deformation due to excessive thinness. It is particularly suitable for high-stress or long-life operating scenarios. At the same time, by increasing the thickness, the magnetic reluctance of the magnetic core is significantly reduced, enhancing the magnetic permeability of the magnetic circuit and thus improving the electromagnetic conversion efficiency of the device. This is especially important for applications requiring high-performance magnetic coupling. Of course, the larger thickness can expand the heat capacity of the second magnetic core 5. Combined with its external structural design, it can reduce the temperature rise rate of the device under high-power operation, improve heat dissipation, and further improve the reliability and service life of the product.

[0056] In one embodiment, the first magnetic core 4 and the second magnetic core 5 structurally include at least one of UU-type magnetic core, EP-type magnetic core, ER-type magnetic core or EF-type magnetic core. Thus, by reasonably selecting the magnetic core type, different application scenarios and performance requirements can be effectively adapted.

[0057] In one embodiment, the integrated frame 1 is made of at least one material selected from PPS, bakelite, or PA. Therefore, by selecting PPS or PA material for the integrated frame 1, the dimensional stability of the frame under high-temperature conditions can be significantly improved, avoiding device failure caused by thermal expansion or contraction. Bakelite material has excellent electrical insulation properties, effectively reducing the frame's interference with external electric fields and ensuring the safe and reliable operation of the transformer. PPS material, due to its excellent chemical corrosion resistance and moisture resistance, is particularly suitable for humid and highly corrosive working environments. PA material is also suitable for scenarios requiring impact and vibration resistance. PPS material's high heat resistance makes it suitable for high-frequency, high-power electronic component applications, while PA material is suitable for applications requiring both mechanical strength and durability, providing greater design flexibility. Therefore, by selecting PPS, bakelite, or PA material according to actual needs, production costs can be reduced while ensuring performance requirements are met, adapting to diverse usage needs and significantly improving the overall performance of the device.

[0058] Preferably, the insulation layer thickness of the integrated frame 1 is ≥0.1mm to reduce the risk of leakage current, ensure reliable operation of the frame in high voltage and high frequency environments, meet higher safety requirements, better resist the influence of environmental factors (such as high temperature, high humidity and corrosive gases), and improve the service life of the device. At the same time, the insulation layer thickness ≥0.1mm can also enhance the mechanical strength of the frame to a certain extent, reduce the impact of external forces on the internal magnetic core and windings, thereby improving the stability of the overall structure.

[0059] The insulation layer can be made of polyimide (PI), polyester film (PET), or epoxy resin, and a uniform covering layer can be formed through molding or spraying processes to achieve the desired insulation effect.

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

[0061] The encapsulated drive transformer and electronic device provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. It should be noted that the descriptions of each embodiment in this application have different emphases. Parts not described in detail or in a certain embodiment can be referred to the relevant descriptions of other embodiments.

[0062] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. The technical features of the technical solution of this application can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are also included within the patent protection scope of this application, as long as the combination of these technical features does not contradict each other.

Claims

1. A plastic package type driving transformer characterized by comprising: include: An integrated frame, wherein a number of metal terminals are arranged at the bottom end of the integrated frame; The winding coil is wound on the integral frame, and the winding coil has lead wire connectors that correspond one-to-one with the metal terminals. The lead wire connectors are electrically connected to the metal terminals. The first magnetic core is disposed in the integrated frame and is covered by the integrated frame; The second magnetic core is disposed at the top of the integrated frame and maintains an adjustable external gap with the winding coil. The two ends of the first magnetic core extend toward the top of the integrated frame and are fixedly connected to the second magnetic core after protruding from the integrated frame to form a closed magnetic circuit.

2. The plastic package drive transformer according to claim 1, wherein The first magnetic core and the integrated frame are integrally injection molded.

3. The plastic package driving transformer according to claim 1, wherein The integrated frame includes a winding section and an end plate section. The end plate section is integrally connected to both ends of the winding section. The winding coil is wound around the winding section, and the metal terminal is connected to the end plate section.

4. The encapsulated drive transformer as described in claim 3, characterized in that, The first magnetic core is connected and communicates with the winding section and the end plate section within the integrated frame.

5. The encapsulated drive transformer as described in claim 4, characterized in that, The first magnetic core has two opposing adjustment portions at its two ends, the adjustment portions protruding from the end plate portion toward the top of the integrated frame, and the adjustment portions are fixedly connected to the second magnetic core.

6. The encapsulated drive transformer as described in claim 5, characterized in that, The vertical height of the adjustment section relative to the end plate section is greater than or equal to the adjustable external gap.

7. The encapsulated drive transformer as described in claim 1, characterized in that, The second magnetic core is arranged in a rectangular structure and has a set thickness of ≥0.5mm.

8. The encapsulated drive transformer as described in claim 1, characterized in that, The first magnetic core and the second magnetic core structurally include at least one of the following: UU-type magnetic core, EP-type magnetic core, ER-type magnetic core, or EF-type magnetic core; and / or The integrated frame is made of at least one material selected from PPS, bakelite, or PA; and / or The insulation layer thickness of the integrated frame is ≥0.1mm.

9. The encapsulated drive transformer as described in claim 3, characterized in that, The metal terminal is embedded on the side of the end plate away from the second magnetic core. It includes a first connecting pin and a second connecting pin protruding from the end plate. The first connecting pin and the second connecting pin are kept parallel and spaced apart. The lead connector is electrically connected to the first connecting pin, and the second connecting pin is connected to an external device.

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

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