A transformer skeleton and a transformer

Abstract

The application discloses a transformer framework and a transformer, which comprise a female sleeve and a male sleeve. The female sleeve comprises an isolation cover, a secondary winding slot and a secondary pin. The isolation cover, the secondary winding slot and the secondary pin are sequentially arranged along the height direction of the female sleeve. The side, away from the secondary winding slot, of the isolation cover is provided with a first flying wire port. The male sleeve comprises a primary winding slot. The primary winding slot is arranged in the isolation cover so as to separate the secondary winding slot and the primary winding slot. The male sleeve is provided with a second flying wire port. The second flying wire port and the first flying wire port surround the flying wire outlet. The VCC coil wound on the primary winding slot is led out from the flying wire outlet and connected to the secondary pin. The application can simplify the production process, reduce the manufacturing cost, realize the convenient flying wire arrangement of the VCC coil from the primary winding slot to the secondary pin, and ensure the high reliability of the VCC power supply loop.

Description

Technical Field

[0001] This application relates to the field of transformer technology, and in particular to a transformer frame and a transformer. Background Technology

[0002] In the field of power electronics, LLC resonant power supplies are widely used in server power supplies, communication equipment switching power supplies, industrial power supplies, and medical power supplies due to their advantages such as high switching frequency and narrow frequency adjustment range. To reduce cost and size, LLC resonant power supplies often integrate the transformer and resonant inductor in their design, utilizing the leakage inductance of the primary and secondary windings as the resonant inductor, and employing a slotted frame for segmented winding. In transformer manufacturing and practical applications, the frame, as a key component supporting the coil, has a significant impact on electrical performance, assembly efficiency, and application adaptability due to its structural design.

[0003] In industrial and medical power supply applications, it is necessary to ensure that the system can enter constant current mode under short-circuit conditions to achieve protection functions. However, the existing transformer frame structure makes it difficult to conveniently arrange the flying wire of the VCC winding from the primary winding slot to the secondary pin, often requiring additional transition structures. This not only increases the complexity of the manufacturing process and manufacturing cost, but may also lead to a decrease in the stability of VCC power supply due to poor transition contact. Utility Model Content

[0004] This application aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, the purpose of this application is to provide a transformer frame that simplifies the manufacturing process, reduces manufacturing costs, enables convenient flying wire arrangement of the VCC coil from the primary winding slot to the secondary pin, and ensures high reliability of the VCC power supply circuit.

[0005] This application also proposes a transformer having the above-mentioned transformer frame.

[0006] The transformer frame according to the first aspect of this application includes: The female sleeve includes an isolation cover, a secondary winding slot, and secondary pins. The isolation cover, the secondary winding slot, and the secondary pins are arranged sequentially along the height direction of the female sleeve. A first flying wire port is provided on the side of the isolation cover away from the secondary winding slot. The sub-sleeve includes a primary winding groove disposed inside the isolation cover to separate the secondary winding groove from the primary winding groove. The sub-sleeve is provided with a second flying wire port, which together with the first flying wire port forms a flying wire outlet. The VCC coil wound on the primary winding groove passes through the flying wire outlet and is connected to the secondary pin.

[0007] The transformer frame according to the embodiments of this application has at least the following beneficial effects: The isolation cover of the main bushing has a first flying wire opening on the side away from the secondary winding slot; the primary winding slot of the secondary bushing is placed inside the isolation cover; the secondary bushing has a second flying wire opening; the first and second flying wire openings together form a flying wire outlet. The VCC coil wound on the primary winding slot can directly pass through this flying wire outlet and connect to the secondary pin without the need for an additional transition structure, simplifying the manufacturing process, reducing manufacturing costs, and achieving convenient flying wire arrangement of the VCC coil from the primary winding slot to the secondary pin, ensuring high reliability of the VCC power supply circuit. Furthermore, the primary winding slot is located inside the isolation cover, thereby separating the secondary winding slot from the primary winding slot, facilitating the flying wire connection of the VCC coil from the upper end of the primary coil to the secondary pin.

[0008] According to some embodiments of this application, the isolation cover is provided with a receiving cavity, the primary winding groove is disposed in the receiving cavity, and the first flying wire port is connected to the receiving cavity.

[0009] According to some embodiments of this application, the portion of the VCC coil that exits through the flying wire outlet is the flying wire, and the sub-sleeve is provided with a limiting part. The limiting part is located on the side of the second flying wire outlet away from the first flying wire outlet, and the limiting part is used to limit the flying wire.

[0010] According to some embodiments of this application, a sliding groove is provided on the side of the isolation cover away from the secondary winding groove, the sliding groove is connected to the first flying wire port, and the limiting part can slide in the sliding groove.

[0011] According to some embodiments of this application, a stop is provided on the side of the first flying wire opening away from the sliding groove, and the stop cooperates with the limiting part to limit the flying wire.

[0012] According to some embodiments of this application, the limiting portion protrudes from the sub-sleeve along the height direction of the sub-sleeve.

[0013] According to some embodiments of this application, a first sliding groove is provided in the accommodating cavity, and a first sliding rail is provided in the sub-sleeve, wherein the first sliding rail is slidably connected to the first sliding groove.

[0014] According to some embodiments of this application, a second slide rail is provided in the accommodating cavity, the second slide rail is alternately arranged with the first slide groove, the sub-sleeve is provided with a second slide groove, the second slide groove is alternately arranged with the first slide rail, and the second slide rail is slidably connected with the second slide groove.

[0015] According to some embodiments of this application, the female sleeve is provided with a reserved wire groove, which is used for the secondary coil wound on the secondary winding groove to pass through.

[0016] The transformer according to the second aspect of this application includes the transformer frame of the first aspect of this application.

[0017] The transformer according to the embodiments of this application has at least the following beneficial effects: the transformer of this application can simplify the production process, reduce manufacturing costs, realize convenient flying wire arrangement of VCC coil from primary winding slot to secondary pin, ensure the high reliability of VCC power supply circuit, and thus ensure that the power supply voltage of VCC power supply circuit is not affected by power supply short circuit.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is one of the structural schematic diagrams of the transformer frame according to the first aspect of this application; Figure 2 This is a second schematic diagram of the transformer frame structure according to the first aspect of this application; Figure 3 for Figure 1 One of the cross-sectional views of the transformer frame shown; Figure 4 for Figure 1 The second sectional view of the transformer frame shown; Figure 5 for Figure 4 Enlarged view of section A; Figure 6 for Figure 1 One of the exploded views of the transformer frame shown; Figure 7 for Figure 1 The second exploded view of the transformer frame shown; Figure 8 for Figure 6 One of the schematic diagrams of the transformer bobbin sleeve shown; Figure 9 for Figure 6 The second schematic diagram of the transformer bobbin sleeve structure is shown. Figure 10 for Figure 6 The diagram shows the structure of the transformer frame sub-sleeve.

[0020] Reference numerals: 100, female sleeve; 110, isolation cover; 111, first flying wire port; 112, receiving cavity; 120, secondary winding groove; 130, secondary pin; 140, sliding groove; 150, stop block; 160, first mounting groove; 170, first sliding groove; 180, second sliding rail; 190, reserved wire groove; 200, Sub-sleeve; 210, Primary winding groove; 220, Second flying wire inlet; 230, Limiting part; 240, Second mounting groove; 250, First slide rail; 260, Second slide groove; 300. Flying wire exit; 400. Magnetic core; 410. Core post; 500, copper wire. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0023] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0025] 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 that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, 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.

[0026] Reference Figure 1 , Figure 5 and Figure 6 The first aspect of this application provides a transformer frame, including a female sleeve 100 and a female sleeve 200. The female sleeve 100 includes an isolation cover 110, a secondary winding slot 120, and a secondary pin 130. The isolation cover 110, the secondary winding slot 120, and the secondary pin 130 are arranged sequentially along the height direction of the female sleeve 100. A first flying wire port 111 is provided on the side of the isolation cover 110 away from the secondary winding slot 120. The female sleeve 200 includes a primary winding slot 210, which is disposed inside the isolation cover 110 to separate the secondary winding slot 120 from the primary winding slot 210. The female sleeve 200 is provided with a second flying wire port 220, which and the first flying wire port 111 form a flying wire outlet 300. A VCC coil wound on the primary winding slot 210 passes through the flying wire outlet 300 and is connected to the secondary pin 130.

[0027] Specifically, the isolation cover 110 of the female sleeve 100 has a first flying wire port 111 on the side away from the secondary winding slot 120. The primary winding slot 210 of the female sleeve 200 is placed inside the isolation cover 110, and the female sleeve 200 has a second flying wire port 220. The first flying wire port 111 and the second flying wire port 220 together form a flying wire outlet 300. The VCC coil wound on the primary winding slot 210 can directly pass through this flying wire outlet 300 and connect to the secondary pin 130 without the need for an additional adapter structure. This simplifies the manufacturing process, reduces manufacturing costs, and enables convenient flying wire arrangement of the VCC coil from the primary winding slot 210 to the secondary pin 130, ensuring high reliability of the VCC power supply circuit. In addition, the primary winding slot 210 is located inside the isolation cover 110, which separates the secondary winding slot 120 from the primary winding slot 210, making it easier for the VCC coil to fly out from the upper end of the primary coil and connect to the secondary pin 130.

[0028] For power supplies with constant current mode short-circuit protection, the secondary chip requires a stable power supply VCC from the transformer. In the event of an output short circuit, the output voltage is 0. If the VCC coil is coupled from the secondary coil, the VCC coil supply voltage will be insufficient, preventing the power supply from maintaining a constant current. Therefore, the VCC coil needs to be coupled from the primary coil. This application allows the VCC coil to be wound in the primary winding slot 210, coupling the primary coil, and then connected to the secondary pin 130 via a flying wire from the primary winding slot 210, ensuring that the VCC coil has a stable supply voltage unaffected by power supply short circuits.

[0029] Reference Figure 3 and Figure 6 In some embodiments, the isolation cover 110 is provided with a receiving cavity 112, and the primary winding groove 210 is disposed within the receiving cavity 112. The first flying wire port 111 communicates with the receiving cavity 112. Specifically, the primary coil and the VCC coil are wound in the primary winding groove 210, and the secondary coil is wound in the secondary winding groove 120, which allows for convenient winding and assembly using a winding machine. Simultaneously, since the primary winding groove 210 is disposed within the receiving cavity 112, the primary coil and the secondary coil are separated, ensuring electrical insulation performance between the primary and secondary coils and avoiding electrical interference or short-circuit risks. Furthermore, referring to… Figure 3 , Figure 5 When the primary winding slot 210 is set in the accommodating cavity 112, in the height direction of the female sleeve 100, the primary winding slot 210 is located above the secondary winding slot 120, which facilitates the VCC coil to come out from the upper end of the primary coil and connect to the secondary pin 130, further simplifying the VCC coil flying wire arrangement operation and improving assembly convenience.

[0030] Reference Figure 6 , Figure 7 In some embodiments, the portion of the VCC coil exiting through the flying wire outlet 300 is a flying wire. The sub-sleeve 200 is provided with a limiting part 230, which is located on the side of the second flying wire outlet 220 away from the first flying wire outlet 111. The limiting part 230 is used to limit the flying wire. Specifically, the limiting part 230 can abut against the flying wire formed by the VCC coil exiting through the flying wire outlet 300, limiting the flying wire within the flying wire channel. This prevents the flying wire from shifting, loosening, or even detaching from the flying wire channel during assembly or use, ensuring the regularity and stability of the flying wire wiring, reducing the risk of electrical faults caused by interference with other components due to improper flying wire positioning, and also facilitating subsequent assembly processes, improving the overall reliability and efficiency of production.

[0031] Reference Figure 6 , Figure 7In some embodiments, a sliding groove 140 is provided on the side of the isolation cover 110 away from the secondary winding groove 120. The sliding groove 140 is connected to the first flying wire port 111. The limiting part 230 can slide in the sliding groove 140. The sliding groove 140 can guide the limiting part 230, ensuring that the limiting part 230 slides smoothly along a preset trajectory during movement, and avoiding the limiting part 230 from deviating and affecting the limiting effect on the flying wire.

[0032] Reference Figure 6 , Figure 7 In some embodiments, a stop 150 is provided on the side of the first flying wire port 111 away from the sliding groove 140. The stop 150 cooperates with the limiting part 230 to limit the flying wire, so that the flying wire is connected to the flying wire landing according to the set path, avoiding problems such as deviation, tangling or misalignment of the flying wire during the wiring process, and ensuring the accuracy and regularity of the flying wire connection.

[0033] Reference Figure 6 , Figure 7 In some embodiments, the limiting part 230 protrudes from the sub-sleeve 200 along its height direction, allowing the limiting part 230 to more easily contact the operator's tools or hands. This facilitates pushing, adjusting, and other operations on the limiting part 230 during assembly, improving the convenience and efficiency of adjusting the position of the limiting part 230. Simultaneously, the limiting part 230 protrudes from the female sleeve 100, creating a more sufficient mating space between the limiting part 230 and the stop block 150, further clamping and constraining the flying wire, thereby further ensuring that the flying wire is arranged according to the set path and enhancing the stability of VCC power supply.

[0034] Reference Figure 6 , Figure 7 In some embodiments, along the height direction of the female sleeve 100, the stop 150 protrudes from the female sleeve 100, further restricting the deviation or disengagement of the flying wire in the height direction. This allows the stop 150 to form a more comprehensive limiting effect when it cooperates with the limiting part 230, ensuring that the flying wire is always stable within the set path. This avoids connection problems or interference with other components caused by changes in the position of the flying wire, thereby improving the reliability of the flying wire arrangement of the VCC coil and providing a guarantee for the stability of the overall electrical performance of the transformer.

[0035] Reference Figure 4 , Figure 5 , Figure 9In some embodiments, the transformer frame further includes a magnetic core 400, which is sleeved on the outside of the female sleeve 100. The magnetic core 400 includes a core post 410. The female sleeve 100 is provided with a first mounting groove 160, and the female sleeve 200 is provided with a second mounting groove 240 corresponding to the first mounting groove 160. The first mounting groove 160 and the second mounting groove 240 are connected to form an installation channel. The core post 410 is placed in the installation channel to ensure that the core post 410 is in a preset magnetic field position, thereby ensuring the stable operation of the magnetic core 400's sensing function. At the same time, the installation channel wraps around and limits the core post 410, preventing displacement or loosening of the core post 410 during assembly or use, reducing performance fluctuations of the core 400 caused by positional deviations of the core post 410, and thus improving the overall magnetic coupling efficiency and electrical performance stability of the transformer.

[0036] Reference Figure 5 , Figure 8 , Figure 10 In some embodiments, the accommodating cavity 112 is provided with a first slide groove 170, and the sub-sleeve 200 is provided with a first slide rail 250. The first slide rail 250 is slidably connected to the first slide groove 170, which can guide the assembly of the sub-sleeve 200 and the mother sleeve 100, and can also increase the creepage distance from the primary coil to the magnetic core 400.

[0037] Specifically, since the primary winding groove 210 is located within the accommodating cavity 112, the primary coil is surrounded by the sub-sleeve 200 and the female sleeve 100, thus separating the primary coil from the magnetic core 400. Furthermore, the engagement of the first slide rail 250 and the first slide groove 170 creates a tortuous gap between the contact surfaces of the sub-sleeve 200 and the female sleeve 100, increasing the creepage distance. Simultaneously, the presence of the first slide rail 250 and the first slide groove 170 improves isolation performance, allowing the coil that originally required three layers of insulation to be replaced with enameled wire, saving costs. Moreover, because enameled wire has a smaller diameter, more turns can be wound within the limited internal space, increasing the flexibility of coil winding and adjustment, and adapting to different electrical performance requirements.

[0038] Reference Figure 5 , Figure 8 , Figure 10In some embodiments, a second slide rail 180 is provided in the accommodating cavity 112, and the second slide rail 180 is alternately arranged with the first slide groove 170. The sub-sleeve 200 is provided with a second slide groove 260, and the second slide groove 260 is alternately arranged with the first slide rail 250. The second slide rail 180 and the second slide groove 260 are slidably connected, which can further enhance the guiding accuracy when the sub-sleeve 200 and the mother sleeve 100 are assembled, ensuring that the two are always smoothly connected along the preset trajectory during the assembly process, avoiding deviation or jamming, and improving the smoothness and efficiency of assembly. Meanwhile, the alternating distribution of the second slide rail 180 and the first slide groove 170, and the second slide groove 260 and the first slide rail 250, increases the contact area and tightness between the sub-sleeve 200 and the mother sleeve 100, making the connection between the sub-sleeve 200 and the mother sleeve 100 more stable, reducing structural loosening caused by vibration and other factors during use, further optimizing the tortuous gap shape of the contact surface between the sub-sleeve 200 and the mother sleeve 100, increasing the creepage distance, and providing a more reliable guarantee for the overall structural stability and electrical safety of the transformer frame.

[0039] Reference Figure 2 , Figure 9 In some embodiments, the female sleeve 100 is provided with a reserved wire groove 190 for the secondary coil wound on the secondary winding groove 120 to pass through. Specifically, in high-voltage transformers, the secondary coil is relatively thin and can be connected to the output pins. However, in low-voltage transformers, the secondary coil uses thicker multi-strand copper wire 500, which cannot be soldered to the pins. Therefore, for low-voltage transformers, the secondary coil is fixed in the reserved wire groove 190 by adhesive and directly soldered to the circuit board to achieve a larger current output. That is, the secondary coil of this application can be connected to the pins with thin wire or fixed with multi-strand copper wire 500 by adhesive and directly output current on the circuit board, making it suitable for transformers of various voltage specifications.

[0040] A transformer according to a second aspect embodiment of this application includes the transformer frame of the first aspect embodiment of this application. The transformer of this application simplifies the manufacturing process, reduces manufacturing costs, and enables convenient flying wire arrangement of the VCC coil from the primary winding slot 210 to the secondary pin 130, ensuring high reliability of the VCC power supply circuit and thus ensuring that the power supply voltage of the VCC power supply circuit is not affected by a power supply short circuit.

[0041] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A transformer frame, characterized in that, include: The female sleeve includes an isolation cover, a secondary winding slot, and secondary pins. The isolation cover, the secondary winding slot, and the secondary pins are arranged sequentially along the height direction of the female sleeve. A first flying wire port is provided on the side of the isolation cover away from the secondary winding slot. The sub-sleeve includes a primary winding groove disposed inside the isolation cover to separate the secondary winding groove from the primary winding groove. The sub-sleeve is provided with a second flying wire port, which together with the first flying wire port forms a flying wire outlet. The VCC coil wound on the primary winding groove passes through the flying wire outlet and is connected to the secondary pin.

2. The transformer frame according to claim 1, characterized in that, The isolation cover is provided with a receiving cavity, the primary winding groove is disposed in the receiving cavity, and the first flying wire port is connected to the receiving cavity.

3. The transformer frame according to claim 2, characterized in that, The portion of the VCC coil that exits through the flying wire outlet is the flying wire. The sub-sleeve is provided with a limiting part, which is located on the side of the second flying wire outlet away from the first flying wire outlet. The limiting part is used to limit the flying wire.

4. The transformer frame according to claim 3, characterized in that, The isolation cover has a sliding groove on the side away from the secondary winding groove. The sliding groove is connected to the first flying wire port, and the limiting part can slide within the sliding groove.

5. The transformer frame according to claim 4, characterized in that, A stop is provided on the side of the first flying wire opening away from the sliding groove. The stop cooperates with the limiting part to limit the flying wire.

6. The transformer frame according to claim 3, characterized in that, Along the height direction of the sub-sleeve, the limiting portion protrudes from the top of the sub-sleeve.

7. The transformer frame according to claim 2, characterized in that, The accommodating cavity is provided with a first sliding groove, and the sub-sleeve is provided with a first sliding rail, the first sliding rail being slidably connected to the first sliding groove.

8. The transformer frame according to claim 7, characterized in that, The accommodating cavity is provided with a second slide rail, which is alternately arranged with the first slide groove. The sub-sleeve is provided with a second slide groove, which is alternately arranged with the first slide rail. The second slide rail and the second slide groove are slidably connected.

9. The transformer frame according to claim 1, characterized in that, The female sleeve is provided with a reserved wire groove, which is used for the secondary coil wound on the secondary winding groove to pass through.

10. A transformer, characterized in that, Includes the transformer frame as described in any one of claims 1 to 9.

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