Modular transformer

Abstract

The invention relates to a modularized transformer which comprises an outer assembling shell and an inner assembling shell. The outer assembling shell comprises two outer magnetic shells which define an assembling space, and a magnetic core is arranged in the assembling space and connected to the outer magnetic shells. The inner assembly shell arranged in the assembly space comprises a first baffle and a second baffle which are mutually clamped to form a containing cavity; an insulating sleeve is arranged on one side, facing the accommodating cavity, of the first baffle; the second baffle plate is provided with a through hole corresponding to the insulating sleeve. The magnetic core penetrates through the through hole and the insulating sleeve; the first baffle plate is provided with a first wiring terminal exposed in the assembly space; the coil winding is arranged in the containing cavity and arranged on the insulating sleeve in a sleeving mode, the input end of the coil winding is electrically connected with the first wiring terminal, and the output end of the coil winding is exposed out of the assembling space. Wherein a closed magnetic circuit formed by the outer magnetic shell and the magnetic core is combined with the insulating sleeve, so that the magnetic flux is more concentrated; the windings are stacked and sleeved in a cake shape, so that the interlayer distance of the windings is shortened, the turn-to-turn coupling is optimized, and the leakage inductance is further reduced; and through modular arrangement, the process steps are simplified, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of electrical accessories, and particularly to a modular transformer. Background Art

[0002] Transformers are widely used in various modern electronic devices, such as handling the supply of various power sources, and have various other uses. There is no doubt that they are an essential component of electronic devices. Existing transformers usually adopt a fixed structure, in which the magnetic core and the coil winding are fixed together through a series of complex processes. Therefore, the manufacturing process of traditional transformers is cumbersome, which not only increases the difficulty of the production process but also raises the manufacturing cost. Summary of the Invention

[0003] This application provides a modular transformer, which simplifies the process steps and reduces the manufacturing difficulty and cost through modular settings.

[0004] To this end, this application provides a modular transformer, comprising:

[0005] An outer assembly shell, comprising two outer magnetic shells and a magnetic core. The two outer magnetic shells enclose an assembly space, and the magnetic core is arranged in the assembly space and connected to the outer magnetic shells;

[0006] An inner assembly shell, arranged in the assembly space; the inner assembly shell comprises a first baffle and a second baffle, and the first baffle and the second baffle are mutually clamped to form a receiving cavity; an insulating sleeve is arranged on one side of the first baffle facing the receiving cavity; the second baffle is provided with a through hole corresponding to the insulating sleeve; the magnetic core passes through the through hole and the insulating sleeve; the first baffle is provided with a first wiring terminal, and the first wiring terminal is exposed in the assembly space;

[0007] A coil winding, arranged in the receiving cavity and sleeved on the insulating sleeve. The input end of the coil winding is electrically connected to the first wiring terminal, and the output end of the coil winding is exposed in the assembly space.

[0008] As a preferred solution, a plurality of first extending parts are arranged on the side wall of the first baffle along the direction facing the second baffle, and the first extending parts are exposed in the assembly space; each first extending part corresponds to a first clamping part;

[0009] A plurality of second extending parts are arranged on the side wall of the second baffle along the direction facing the first baffle, and the second extending parts are exposed in the assembly space; each second extending part corresponds to a second clamping part;

[0010] Wherein, the first clamping part is clamped with the second clamping part.

[0011] As a preferred solution, a coil groove for accommodating the coil winding is provided on a side of the first baffle facing the accommodating cavity and is concentrically arranged with the insulating sleeve.

[0012] As a preferred solution, the coil winding includes an input winding and an output winding, the input winding and the output winding are sleeved in the insulating sleeve, the input winding is electrically connected to the first terminal, and the output end of the output winding is exposed in the assembly space.

[0013] As a preferred solution, the input winding is multiple, and the multiple input windings are respectively a first winding, a second winding, and a fourth winding, and the output winding is a third winding;

[0014] The first winding is located in the coil slot and is arranged close to the first baffle; the second winding is located on the side of the first winding away from the first baffle; the third winding is located on the side of the second winding away from the first winding; the fourth winding is located on the side of the third winding away from the second winding and is arranged close to the second baffle;

[0015] The first winding, the second winding and the fourth winding are electrically connected to the first terminal respectively; the output end of the third winding is connected to the first baffle and exposed in the assembly space.

[0016] As a preferred solution, the third winding includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged at an angle, and the first connecting part is arranged between the second winding and the fourth winding; the end of the second connecting part facing away from the first connecting part is connected to the first baffle.

[0017] As a preferred solution, the first baffle is provided with a positioning groove; the positioning groove runs through the first baffle; the second connecting portion is inserted into the positioning groove and extends from a side of the first baffle away from the second baffle.

[0018] As a preferred solution, the first baffle is also provided with a plurality of wire grooves, which are arranged at intervals and arranged close to the first terminal; the output terminal or the input terminal of the input winding is correspondingly arranged in the wire grooves and are respectively electrically connected to the first terminal one by one.

[0019] As a preferred solution, the through hole includes a first through portion and a second through portion, and the first through portion communicates with the second through portion; the first through portion is coaxially arranged with the insulating sleeve and forms a through channel with the insulating sleeve; the second through portion is arranged corresponding to the output terminal or the input terminal of the fourth winding and forms a receiving space for receiving the output terminal or the input terminal of the fourth winding.

[0020] Wherein, the aperture size of the second through portion gradually decreases in a direction away from the first through portion.

[0021] As a preferred solution, the length of the outer magnetic shell is less than the length of the inner assembly shell, so that both ends of the inner assembly shell extend out of the assembly space.

[0022] Advantages of the present application:

[0023] The modular transformer includes an outer assembly shell, an inner assembly shell, and a coil winding; the outer assembly shell includes two outer magnetic shells and a magnetic core, the two outer magnetic shells enclose to form an assembly space, the magnetic core is arranged in the assembly space and connected to the outer magnetic shell; the inner assembly shell is arranged in the assembly space; the inner assembly shell includes a first baffle and a second baffle, the first baffle and the second baffle are engaged with each other to form a receiving cavity; an insulating sleeve is arranged on a side of the first baffle facing the receiving cavity; the second baffle is provided with a through hole corresponding to the insulating sleeve; the magnetic core passes through the through hole and the insulating sleeve; the first baffle is provided with a first terminal, and the first terminal is exposed in the assembly space; the coil winding is arranged in the receiving cavity and sleeved on the insulating sleeve, an input end of the coil winding is electrically connected to the first terminal, and an output end of the coil winding is exposed in the assembly space.

[0024] Among them, the first baffle serves as the basic support structure of the transformer and is provided with an insulating sleeve. The function of the insulating sleeve is to fix the coil winding and provide insulation protection to prevent the coil winding from directly contacting other components, resulting in short circuits or energy losses. The produced coil winding with the coils already wound is sleeved on the insulating sleeve of the first baffle one by one, without the need for winding one by one, making the winding more compact, reducing the interlayer distance, and thus reducing the leakage inductance. At the same time, since each winding is sleeved on the insulating sleeve in a cake shape, the coil winding can be quickly and accurately sleeved on it, without the need to wind the coil winding around the winding structure component one by one. Thus, the installation of the coil winding does not require an additional fixing device, simplifying the winding steps of the coil winding, simplifying the process steps, and reducing the assembly difficulty at the same time. The through hole and the insulating sleeve form a through channel, providing space for the insertion of the magnetic core, enabling the magnetic core structure to be quickly and accurately inserted into the through channel, and simplifying the assembly process. After the coil winding is assembled on the first baffle, the second baffle is placed on the first baffle and pressed down to achieve snap connection, further enhancing the stability of the overall structure. Then, the magnetic core is installed in the through channel of the inner assembly shell. The outer magnetic shell and the magnetic core are arranged to form a closed magnetic circuit, reducing the magnetic resistance and further reducing the leakage inductance. Finally, the input and output terminals of the input winding are wound and tied to the first terminal to achieve its electrical connection, so that the leakage inductance of the transformer is relatively small.

[0025] That is to say, the closed magnetic circuit formed by the outer magnetic shell and the magnetic core, combined with the precise alignment of the insulating sleeve and the through channel in the inner assembly shell, makes the magnetic flux path highly concentrated, significantly reducing the magnetic resistance and magnetic circuit leakage. Each winding in the coil winding is directly sleeved on the insulating sleeve in a cake-shaped stacked manner. By shortening the interlayer distance of the winding and optimizing the inter-turn coupling, the leakage inductance is controlled below that of the traditional winding structure, further reducing the leakage inductance. At the same time, the first baffle, the coil winding (including the first winding, the second winding, the third winding, and the fourth winding), the second baffle, and the magnetic core structure can be independently manufactured and assembled through modular setting, simplifying the process steps, reducing the manufacturing difficulty and cost. Especially during maintenance and upgrade, a certain module can be replaced separately without disassembling the entire transformer, further reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is an exploded view of a modular transformer;

[0028] Figure 2 It isFigure 1 Another explosion structure diagram;

[0029] Figure 3 is Figure 1 Partial assembly structure diagram of;

[0030] Figure 4 is Figure 1 Explosion structure diagram of the first baffle, coil winding and second baffle in;

[0031] Figure 5 is Figure 4 Assembly structure diagram of;

[0032] Figure 6 Assembly structure diagram of a modular transformer;

[0033] Figure 7 is Figure 6 Another assembly structure diagram of.

[0034] Explanation of reference numerals in the drawings:

[0035] 1. Outer assembly shell; 11. Magnetic core; 12. Outer magnetic shell; 2. Second baffle; 21. Second extension; 211. Second clamping portion; 22. Through hole; 221. First through portion; 222. Second through portion; 3. Third baffle; 4. Coil winding; 41. First winding; 42. Second winding; 43. Third winding; 431. First connection portion; 432. Second connection portion; 44. Fourth winding; 5. First baffle; 51. Insulating sleeve; 52. Coil groove; 53. First extension; 54. Wire groove; 55. Positioning groove; 6. First terminal. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0038] Such asFigures 1 to 7 As shown in the figure, the present application provides a modular transformer, including an outer assembly shell 1, an inner assembly shell, and a coil winding 4; the outer assembly shell 1 includes two outer magnetic shells 12 and a magnetic core 11. The two outer magnetic shells 12 enclose an assembly space, and the magnetic core 11 is disposed in the assembly space and connected to the outer magnetic shells 12. Preferably, a magnetic core 11 is correspondingly provided on each outer magnetic shell 12; it is also possible that a magnetic core 11 is provided on one outer magnetic shell 12 and the other outer magnetic shell 12 is an assembly shell. At this time, the two outer magnetic shells 12 can be mutually snap-connected by magnetic attraction, pressing, clamping, or hot melting. The inner assembly shell is disposed in the assembly space. Preferably, the outer magnetic shell 12 includes a first shell portion and two second shell portions, and the two second shell portions are respectively connected to both ends of the first shell portion. The first shell portion is provided with the magnetic core 11. The second shell portion protrudes away from the magnetic core 11, and the protrusion fits with the outer wall of the inner assembly shell, so that the cooperation between the inner assembly shell and the outer assembly shell 1 is more compact and sealed, eliminating the magnetic circuit air gap caused by tolerances in traditional assembly and further reducing the leakage inductance. The inner assembly shell includes a first baffle 5 and a second baffle 2, and the first baffle 5 and the second baffle 2 are mutually snap-connected to form a receiving cavity. An insulating sleeve 51 is provided on one side of the first baffle 5 facing the receiving cavity. Preferably, the insulating sleeve 51 has a through cavity that penetrates the first baffle 5. The second baffle 2 is provided with a through hole 22 corresponding to the insulating sleeve 51. The through hole 22 and the through cavity form a through channel for inserting the magnetic core 11. The magnetic core 11 passes through the through hole 22 and the insulating sleeve 51. The first baffle 5 is provided with a first terminal 6, and the first terminal 6 is exposed in the assembly space. The coil winding 4 is disposed in the receiving cavity and sleeved on the insulating sleeve 51. The input end of the coil winding 4 is electrically connected to the first terminal 6, and the output end of the coil winding 4 is exposed in the assembly space.

[0039] As Figures 1 to 2As shown, the first baffle 5 serves as the basic support structure of the transformer and is provided with an insulating sleeve 51; the insulating sleeve 51 can be used to isolate the inserted magnetic core 11, assemble and fix the coil winding 4, and provide insulation protection to prevent the coil winding 4 from directly contacting other components, resulting in short circuits or energy losses; the produced coil winding 4, which has been wound into a cake-shaped overlapping turn layer, that is, the first winding 41, is sleeved on the insulating sleeve 51 of the first baffle 5 in a cake shape and is accommodated in the coil slot 52. Then, the second winding 42, the third winding 43, and the fourth winding 44 are stacked on the first winding 41 in a cake shape and are respectively sleeved on the insulating sleeve 51. It should be noted that the second connecting portion 432 of the third winding 43 is inserted through the first baffle 5; in this way, the coil winding 4 can be quickly and firmly sleeved on the insulating sleeve 51, and there is no need to wind the coil around the winding structure one by one to form the coil winding 4, thus realizing that the installation of the coil winding 4 does not require additional fixing devices, simplifying the winding steps of the coil winding 4 and making its processing simpler. At the same time, since each winding is sleeved on the insulating sleeve 51 in a cake shape and does not need to be wound turn by turn, the windings are more compact, the interlayer distance is reduced, and thus the leakage inductance is reduced. After the coil winding 4 is assembled on the first baffle 5, the second baffle 2 is placed on the first baffle 5 and pressed down tightly to achieve snap connection, further enhancing the stability of the overall structure; the through hole 22 of the second baffle 2 and the through cavity of the insulating sleeve 51 form a through channel, and then the magnetic core 11 is installed in the through channel of the inner assembly shell, and then the two outer magnetic shells 12 are pressed together to form the transformer. The outer magnetic shell 12 and the magnetic core 11 are arranged to form a closed magnetic circuit, reducing the magnetic resistance and further reducing the leakage inductance; finally, the input terminal and the output terminal of the input winding are wound and tied to the first terminal 6 to achieve its electrical connection, so that the leakage inductance of the transformer is relatively small and it is suitable for large currents.

[0040] That is to say, the closed magnetic circuit formed by the outer magnetic shell 12 and the magnetic core 11, combined with the precise alignment of the insulating sleeve 51 and the through channel in the inner assembly shell, makes the magnetic flux path highly concentrated, significantly reducing the magnetic resistance and magnetic circuit leakage. Each winding in the coil winding 4 is directly sleeved on the insulating sleeve 51 in a cake-shaped laminated manner. By shortening the interlayer distance of the windings and optimizing the inter-turn coupling, the leakage inductance is controlled below that of the traditional winding structure, further reducing the leakage inductance.

[0041] As Figures 1 to 2As shown, since the transformer adopts a fixed structure, it is difficult to perform modular replacement or repair when the transformer is damaged or needs to be upgraded, resulting in high maintenance costs. Specifically in this application, the magnetic core 11 penetrates through the through-channel and sequentially passes through the first baffle 5, the first winding 41, the second winding 42, the third winding 43, the fourth winding 44, and the second baffle 2 to complete the assembly; that is, the first baffle 5, the windings in disk-shaped overlap, the second baffle 2, and the magnetic core 11 can be independently manufactured and assembled through modular settings, simplifying the process steps, reducing the manufacturing difficulty and cost. Especially during maintenance and upgrade, a certain module can be replaced separately without disassembling the entire transformer, further reducing the maintenance cost.

[0042] In this embodiment, as Figures 1 to 7 shown, a plurality of first extension parts 53 are provided on the side wall of the first baffle 5 along the direction facing the second baffle 2, and the first extension parts 53 are exposed in the assembly space; each of the first extension parts 53 corresponds to a first clamping part 531; a plurality of second extension parts 21 are provided on the side wall of the second baffle 2 along the direction facing the first baffle 5, and the second extension parts 21 are exposed in the assembly space; each of the second extension parts 21 corresponds to a second clamping part 211; wherein, the first clamping part 531 is engaged with the second clamping part 211. Further, the first clamping part 531 and the second clamping part 211 are corresponding structures. Preferably, the first clamping part 531 and the second clamping part 211 can be a concave-convex corresponding structure to achieve the purpose of engaging the first clamping part 531 with the second clamping part 211, that is, to achieve the stable connection between the first baffle 5 and the second baffle 2, so that the windings are sleeved on the insulating sleeve 51 in a disk shape and pressed in the accommodating cavity without winding turn by turn, making the windings more compact, reducing the interlayer distance, and further reducing the leakage inductance. Specifically in this application, the first clamping part 531 can be a protruding part, and the second clamping part 211 can be a recessed part that fits with it, and the two are engaged with each other to form a mechanical lock, but it is not limited to the illustrated embodiment with multiple protruding parts forming an alternating complementary corresponding structure.

[0043] In this embodiment, as Figure 1 、 Figure 4As shown, on the side of the first baffle 5 facing the accommodation cavity, there is a coil groove 52 for accommodating the coil winding 4, and it is concentric with the insulating sleeve 51. Among them, the design of the coil groove 52 enables the coil winding 4 to be precisely accommodated in the first baffle 5 and be concentric with the insulating sleeve 51 at the same time, ensuring that the center position of the coil winding 4 is aligned with the axis of the insulating sleeve 51. This structure helps to achieve precise positioning, simplifies the installation process, and reduces assembly errors. Among them, the coil groove 52 further provides a fixed accommodation space for the coil winding 4. Also, through the concentric setting with the insulating sleeve 51, the overall structure becomes more compact, enhancing the stability of the overall structure. It can effectively prevent the coil winding 4 from shifting or loosening during operation, thereby improving the reliability and durability of the device. In addition, through the concentric setting of the coil groove 52 and the insulating sleeve 51, the coil windings 4 can be evenly distributed around the insulating sleeve 51, making the magnetic flux path highly concentrated, significantly reducing the magnetic resistance and magnetic circuit leakage, thereby reducing electromagnetic interference and energy loss. Furthermore, the leakage inductance of this transformer is relatively small.

[0044] In this embodiment, as Figure 1 、 Figure 2As shown, the coil winding 4 includes an input winding and an output winding, the input winding and the output winding are sleeved in the insulating sleeve 51, the input winding is electrically connected to the first terminal 6, and the output end of the output winding is exposed in the assembly space. Preferably, there are multiple input windings, which are respectively a first winding 41, a second winding 42, and a fourth winding 44, and the output winding is a third winding 43; the first winding 41 is located in the coil slot 52 and is arranged close to the first baffle 5; the second winding 42 is located on the side of the first winding 41 away from the first baffle 5; the third winding 43 is located on the side of the second winding 42 away from the first winding 41; the fourth winding 44 is located on the side of the third winding 43 away from the second winding 42, and is arranged close to the second baffle 2; wherein the first winding 41, the second winding 42 and the fourth winding 44 are electrically connected to the first terminal 6 respectively; the output end of the third winding 43 is connected to the first baffle 5 and exposed in the assembly space. Preferably, the first winding 41 adopts a copper wire cake winding, which is respectively wound and connected with the first terminal 6 through its input terminal and output terminal; the second winding 42 is located on the side of the first winding 41 away from the first gear; preferably, the second winding 42 is mainly a coil structure, and its input terminal and output terminal are respectively wound and connected with the first terminal 6; the third winding 43 is located on the side of the second winding 42 away from the second winding 42; preferably, the third winding 43 adopts a copper sheet winding, which is connected to the first baffle 5 through its second connecting portion 432, so that the first winding 41 and the third winding 43 form a transformer winding, which is mainly used to adjust the voltage and realize the transmission and conversion of circuit functions; the fourth winding 44 is located on the side of the third winding 43 away from the second winding 42, and is arranged close to the second baffle 2; preferably, the fourth winding 44 is mainly a coil structure, and its input terminal and output terminal are respectively wound and connected with the first terminal 6. It is further explained in detail that the first winding 41 and the third winding 43 together constitute the winding part of the transformer, which is mainly used to adjust the voltage and realize the voltage transmission and conversion function in the circuit; while the second winding 42 and the fourth winding 44 are mainly coil structures, which are used to generate magnetic flux in the electromagnetic field, store energy or generate induction, so that the leakage inductance of the transformer is relatively small.

[0045] Among them, the input winding and the output winding are arranged in an alternating laminated manner, that is, the first winding 41, the second winding 42, and the fourth winding 44, and the third winding 43 are arranged alternately in a disk-shaped laminated manner. By shortening the axial distance between the input and output windings, the magnetic field coupling efficiency is significantly enhanced, and the leakage inductance is small. The third winding 43 uses a copper sheet winding, and the first winding 41, the second winding 42, and the fourth winding 44 use a coil disk structure. Through preformed modular assembly, the problem of uneven inter-turn gaps in the traditional winding process is eliminated, and the divergence of leakage magnetic flux is further suppressed. At the same time, through the modular setting of each winding, the volume of the transformer is miniaturized, and it can be independently manufactured and assembled, simplifying the process steps and reducing the manufacturing difficulty and cost.

[0046] In this embodiment, as Figure 1 , Figure 2 shown, the third winding 43 includes a first connection portion 431 and a second connection portion 432. The first connection portion 431 and the second connection portion 432 are arranged at an angle. The first connection portion 431 is disposed between the second winding 42 and the fourth winding 44; one end of the second connection portion 432 facing away from the first connection portion 431 is connected to the first baffle 5. Further detailed description is that, as a copper sheet winding, the third winding 43 is connected to the first baffle 5 through its second connection portion 432, and together with the first winding 41, constitutes the winding part of the transformer, mainly used to adjust the voltage and realize the transmission and conversion of circuit functions; preferably, the first connection portion 431 is provided with an annular hollow portion for reducing weight, optimizing heat dissipation or meeting specific electromagnetic performance requirements, and can also be used to adjust electromagnetic characteristics, such as reducing eddy current losses; among them, the first connection portion 431 and the second connection portion 432 arranged at an angle form an L-shaped or V-shaped structure, improving the mechanical stability of the winding, optimizing the distribution of the electromagnetic field, and enhancing the performance of the transformer; that is, the introduction of the angle setting and the annular hollow portion further optimizes the performance and applicability of the winding.

[0047] In this embodiment, as Figures 1 to 4 , Figure 6 shown, the first baffle 5 is provided with a positioning groove 55; the positioning groove 55 penetrates through the first baffle 5; the second connection portion penetrates through the positioning groove 55 and extends out from the side of the first baffle 5 facing away from the second baffle 2. Further, the second connection portion 432 penetrates through and extends out of the positioning groove 55, making the connection between the third winding 43 and the first baffle 5 stronger, capable of withstanding a certain mechanical stress, and also enhancing the stability of the overall structure. In addition, through the connection method of the positioning groove 55, the position of the third winding 43 is accurately fixed, avoiding displacement caused by vibration or external force, and ensuring the stability and reliability of the winding.

[0048] In this embodiment, as Figure 1 ,Figure 4 , Figure 5 and Figure 7 As shown in Figure 4 , Figure 5 and Figure 7 , the first baffle 5 is further provided with a plurality of wire grooves 54, and the plurality of wire grooves 54 are arranged at intervals and are disposed close to the first terminal 6; the output wiring terminal or the input wiring terminal of the input winding is correspondingly disposed in the wire groove 54 and is respectively electrically connected to the first terminal 6 in one-to-one correspondence. Among them, each wire groove 54 is correspondingly provided with the output wiring terminal or the input wiring terminal of the input winding. The wire groove 54 is used to fix and guide the entry and exit of the wiring terminal, fix the entry and exit wires of the input winding at a specific position, avoid the displacement or loosening of the wires due to vibration or external force, thereby reducing the risk of short circuit or poor contact; especially the spaced arrangement of the wire grooves 54 avoids the direct contact between the wires, further improving the safety of the equipment. Especially when maintaining or replacing the input winding, the wire grooves 54 can conveniently guide the disassembly and reinstallation of the wires, improving the maintenance efficiency. Preferably, the first baffle 5 is further provided with a plurality of first terminals 6, each first terminal 6 corresponds to a wiring terminal, and the electrical connection is achieved by winding around the first terminal 6, making the connection of the wires more convenient; and since the first terminal 6 is exposed in the assembly space, it is also convenient for subsequent maintenance and replacement. In addition, the first terminal 6 can be subsequently inserted into the PCB board to achieve other functions, thereby improving the modularity and expandability of the equipment.

[0049] In this embodiment, as shown in Figure 1 , Figure 2 and Figure 4As shown, the through hole 22 includes a first through portion 221 and a second through portion 222. The first through portion 221 communicates with the second through portion 222 to form an integral through hole 22 structure. The first through portion 221 is coaxially arranged with the insulating sleeve 51 and forms a through channel with the insulating sleeve 51. The second through portion 222 is arranged corresponding to the output terminal or input terminal of the fourth winding 44 and forms a receiving space for accommodating the output terminal or input terminal of the fourth winding 44, making the overall structure more compact and miniaturized. Among them, the aperture size of the second through portion 222 gradually decreases in the direction away from the first through portion 221. Further, the first through portion 221 is coaxially arranged with the insulating sleeve 51 and forms a through channel with the hollow channel of the insulating sleeve 51, ensuring that the coil winding 4 or other components can pass through smoothly and align with the insulating sleeve 51, making the overall structure sealed and compact. The second through portion 222 is arranged corresponding to the wire slot 54. Since the second through portion 222 penetrates through the second baffle 2, the incoming and outgoing wires of the coil winding 4 can be observed through the second through portion 222 to determine whether the coil winding 4 enters the wire slot 54, simplifying the wiring and installation process of the wires. In addition, the aperture of the second through portion 222 is gradually decreased to fix the wire with a tapered aperture design, preventing it from loosening or displacing. At the same time, it also provides a channel for air circulation, helping to improve the heat dissipation performance.

[0050] In this embodiment, as Figures 1 to 7 shown, the length of the outer magnetic shell 12 is less than the length of the inner assembly shell, so that both ends of the inner assembly shell extend out of the assembly space. The extended parts of the inner assembly shell facilitate the installation of external components. For example, the wiring terminals can be directly fixed on the extended parts, simplifying the connection process. The shortening of the length of the outer magnetic shell 12 reduces the overall volume of the device. At the same time, the extended parts of the inner assembly shell make full use of the external space, realizing the efficient use of space and making the transformer miniaturized. It also helps to reduce electromagnetic interference and energy loss, so that the leakage inductance of the transformer is relatively small. In addition, the extended parts of the inner assembly shell can increase the heat dissipation area, which is beneficial to the heat dissipation of the device and improves the operation stability of the device.

[0051] In this embodiment, as Figure 1 、 Figure 4 、 Figure 5 and Figure 7As shown in the figure, it further includes a third baffle 3, which is arranged on the side of the second baffle 2 away from the first baffle 5, that is, the outside of the second baffle 2, and is close to the second through portion 222. It forms a synergistic effect with the second through portion 222, which can provide additional protection for the output terminal or input terminal of the fourth winding 44 to prevent damage to the wire by external objects or external forces. The third baffle 3 is arranged at an interval from the outer magnetic shell 12 and is exposed in the assembly space. Among them, the third baffle 3 serves as a limit block, providing a positioning and guiding function when the magnetic core 11 is assembled to the first baffle 5 and the second baffle 2, which is convenient for installation and maintenance operations. In addition, the interval arrangement between the third baffle 3 and the outer magnetic shell 12 forms a ventilation channel, which is conducive to the heat dissipation inside the device and avoids performance degradation or damage caused by overheating.

[0052] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0054] In the present application, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0055] In the present application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0056] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, provided that these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to cover these modifications and variations.

[0057] As described above, this is the specific implementation of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A modular transformer, characterized in that, include: An outer assembly shell (1) comprises two outer magnetic shells (12) and a magnetic core (11), wherein the two outer magnetic shells (12) enclose an assembly space, and the magnetic core (11) is arranged in the assembly space and connected to the outer magnetic shells (12); An inner assembly shell is arranged in the assembly space; the inner assembly shell comprises a first baffle (5) and a second baffle (2), the first baffle (5) and the second baffle (2) being engaged with each other to form an accommodating cavity; an insulating sleeve (51) is arranged on the side of the first baffle (5) facing the accommodating cavity; the second baffle (2) is provided with a through hole (22) corresponding to the insulating sleeve (51); the magnetic core (11) is inserted into the through hole (22) and the insulating sleeve (51); the first baffle (5) is provided with a first wiring terminal (6), and the first wiring terminal (6) is exposed in the assembly space; The coil winding (4) is arranged in the accommodating cavity and sleeved on the insulating sleeve (51); the input end of the coil winding (4) is electrically connected to the first connecting terminal (6), and the output end of the coil winding is exposed in the assembly space.

2. The modular transformer according to claim 1, wherein The side wall of the first baffle (5) is provided with a plurality of first extension portions (53) along a direction facing the second baffle (2), and the first extension portions (53) are exposed in the assembly space; each of the first extension portions (53) corresponds to a first clamping portion (531); A plurality of second extension portions (21) are provided along the side wall of the second baffle plate (2) facing the first baffle plate (5), and the second extension portions (21) are exposed in the assembly space; each second extension portion (21) corresponds to a second clamping portion (211); Wherein, the first clamping portion (531) is clamped with the second clamping portion (211).

3. The modular transformer according to claim 1, characterized in that A coil groove (52) for accommodating the coil winding (4) is provided on one side of the first baffle (5) facing the accommodating cavity and is arranged concentrically with the insulating sleeve (51).

4. The modular transformer according to claim 1, characterized in that, The coil winding (4) comprises an input winding and an output winding, the input winding and the output winding are sleeved in the insulating sleeve (51), the input winding is electrically connected to the first wiring terminal (6), and the output end of the output winding is exposed in the assembly space.

5. The modular transformer according to claim 4, characterized in that, There are multiple input windings, which are respectively a first winding (41), a second winding (42), and a fourth winding (44); and the output winding is a third winding (43); The first winding (41) is located in the coil slot (52) and is arranged close to the first baffle (5); the second winding (42) is located on a side of the first winding (41) that is away from the first baffle (5); the third winding (43) is located on a side of the second winding (42) that is away from the first winding (41); the fourth winding (44) is located on a side of the third winding (43) that is away from the second winding (42) and is arranged close to the second baffle (2); The first winding (41), the second winding (42) and the fourth winding (44) are respectively electrically connected to the first terminal (6); the output end of the third winding (43) is connected to the first baffle (5) and exposed in the assembly space.

6. The modular transformer according to claim 5, wherein, The third winding (43) comprises a first connecting portion (431) and a second connecting portion (432); the first connecting portion (431) and the second connecting portion (432) are arranged at an angle; the first connecting portion (431) is arranged between the second winding (42) and the fourth winding (44); and an end of the second connecting portion (432) facing away from the first connecting portion (431) is connected to the first baffle (5).

7. The modular transformer according to claim 6, characterized in that The first baffle plate (5) is provided with a positioning groove (55); the positioning groove (55) penetrates the first baffle plate (5); the second connecting portion (432) is inserted into the positioning groove (55) and extends from a side of the first baffle plate (5) away from the second baffle plate (2).

8. The modular transformer according to claim 4, characterized in that, The first baffle (5) is further provided with a plurality of wire grooves (54), the plurality of wire grooves (54) being arranged at intervals and arranged close to the first wiring terminal (6); the output wiring terminal or the input wiring terminal of the input winding is correspondingly arranged in the wire grooves (54), and is respectively electrically connected to the first wiring terminal (6) in a one-to-one correspondence.

9. The modular transformer according to claim 5, wherein The through hole (22) comprises a first through portion (221) and a second through portion (222), the first through portion (221) being in communication with the second through portion (222); the first through portion (221) is coaxially arranged with the insulating sleeve (51) and forms a through passage with the insulating sleeve (51); the second through portion (222) is arranged corresponding to the output terminal or the input terminal of the fourth winding (44) and forms a receiving space for accommodating the output terminal or the input terminal of the fourth winding (44); Wherein, the aperture size of the second through-hole (222) gradually decreases in a direction away from the first through-hole (221).

10. The modular transformer according to any one of claims 1 to 9, characterized in that The length of the outer magnetic shell is smaller than the length of the inner assembly shell, so that two ends of the inner assembly shell extend out of the assembly space respectively.

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