Modular transformer

Abstract

The utility model 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 components, and more particularly to a modular transformer. Background Technology

[0002] Transformers are widely used in various electronic devices today, such as for supplying various power sources, and have many other uses, but their status as an indispensable and important component of electronic devices is beyond doubt. Existing transformers typically employ a fixed structure, with their magnetic core and coil windings fixed together through a series of complex processes. This makes the manufacturing process of traditional transformers cumbersome, increasing both the difficulty of the production process and the manufacturing cost. Utility Model Content

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

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

[0005] The outer assembly shell includes two outer magnetic shells and a magnetic core. The two outer magnetic shells enclose an assembly space, and the magnetic core is disposed in the assembly space and connected to the outer magnetic shells.

[0006] An inner assembly shell is disposed in the assembly space; the inner assembly shell includes a first baffle and a second baffle, which engage with each other to form a receiving cavity; an insulating sleeve is provided on the 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, which is exposed in the assembly space;

[0007] A coil winding is disposed within the receiving cavity and fitted onto the insulating sleeve. The input end of the coil winding is electrically connected to the first terminal block, and the output end of the coil winding is exposed in the assembly space.

[0008] As a preferred embodiment, the sidewall of the first baffle is provided with a plurality of first extensions along the direction facing the second baffle, and the first extensions are exposed in the assembly space; each first extension corresponds to a first snap-fit ​​portion;

[0009] The sidewall of the second baffle is provided with a plurality of second extensions facing the first baffle, and the second extensions are exposed in the assembly space; each second extension corresponds to a second snap-fit ​​portion;

[0010] The first snap-fit ​​portion engages with the second snap-fit ​​portion.

[0011] As a preferred embodiment, the first baffle has a coil slot for accommodating the coil winding on the side facing the receiving cavity, and is concentrically arranged with the insulating sleeve.

[0012] As a preferred embodiment, the coil winding includes an input winding and an output winding, the input winding and the output winding are sleeved on 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 embodiment, there are multiple input windings, which 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 disposed 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 disposed close to the second baffle.

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

[0016] As a preferred embodiment, the third winding includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion being arranged at an angle, the first connecting portion being disposed between the second winding and the fourth winding; the end of the second connecting portion opposite to the first connecting portion is connected to the first baffle.

[0017] As a preferred embodiment, the first baffle is provided with a positioning groove; the positioning groove extends through the first baffle; the second connecting part is inserted through the positioning groove and extends out from the side of the first baffle away from the second baffle.

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

[0019] As a preferred embodiment, the through hole includes a first through portion and a second through portion, the first through portion being connected to 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 provided corresponding to the output terminal or input terminal of the fourth winding and forms a receiving space for accommodating the output terminal or input terminal of the fourth winding;

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

[0021] As a preferred embodiment, 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] The beneficial effects of this application are:

[0023] This 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, with the two outer magnetic shells enclosing an assembly space. The magnetic core is disposed in the assembly space and connected to the outer magnetic shells. The inner assembly shell is disposed in the assembly space. The inner assembly shell includes a first baffle and a second baffle, which engage with each other to form a receiving cavity. An insulating sleeve is provided on the side of the first baffle facing the receiving cavity. The second baffle has a through hole corresponding to the insulating sleeve. The magnetic core passes through the through hole and the insulating sleeve. The first baffle has a first terminal exposed in the assembly space. The coil winding is disposed in the receiving cavity and sleeved on the insulating sleeve. The input end of the coil winding is electrically connected to the first terminal, and the output end of the coil winding is exposed in the assembly space.

[0024] The first baffle serves as the basic support structure for the transformer and is equipped with an insulating sleeve. The insulating sleeve's function is to fix the coil windings and provide insulation protection, preventing direct contact between the coil windings and other components that could lead to short circuits or energy loss. The pre-wound coil windings are then fitted one by one onto the insulating sleeve of the first baffle, eliminating the need for winding each turn individually. This results in a more compact winding, reduced interlayer distance, and thus lower leakage inductance. Furthermore, because each winding is fitted onto the insulating sleeve in a disc shape, the coil windings can be quickly and accurately installed without the need to wind them one turn at a time onto the winding frame. This simplifies the coil winding process by eliminating the need for additional fixing devices. This simplifies the process steps and reduces assembly difficulty. The through hole and the insulating sleeve form a through channel, providing space for the insertion of the magnetic core, allowing the magnetic core structure to be quickly and accurately inserted into the through channel, 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 a snap-fit ​​connection, further enhancing the stability of the overall structure. Then, the magnetic core is installed in the through channel of the inner assembly shell, where the outer shell and the magnetic core form a closed magnetic circuit, reducing magnetic resistance and further reducing leakage inductance. Finally, the input and output terminals of the input winding are wound and tied to the first terminal to achieve electrical connection, thereby making the leakage inductance of the transformer relatively small.

[0025] In other words, 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, highly concentrates the magnetic flux path, significantly reducing magnetic resistance and magnetic circuit leakage. Each winding in the coil winding is directly fitted onto the insulating sleeve in a disc-shaped stacked manner. By shortening the inter-layer distance of the windings and optimizing the inter-turn coupling, the leakage inductance is controlled below that of traditional winding junctions, further reducing leakage inductance. Simultaneously, the first baffle, coil windings (including the first, second, third, and fourth windings), second baffle, and magnetic core structure are modularly designed, allowing for independent manufacturing and assembly. This simplifies the process steps, reduces manufacturing difficulty and cost, and especially during maintenance and upgrades, individual modules can be replaced without disassembling the entire transformer, further reducing maintenance costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an exploded view of a modular transformer.

[0028] Figure 2 for Figure 1 Another exploded structure diagram;

[0029] Figure 3 for Figure 1 Partial assembly structure diagram;

[0030] Figure 4 for Figure 1 Exploded view of the first baffle, coil winding and second baffle;

[0031] Figure 5 for Figure 4 Assembly structure diagram;

[0032] Figure 6 This is an assembly structure diagram of a modular transformer;

[0033] Figure 7 for Figure 6 Another assembly structure diagram.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Outer housing; 11. Magnetic core; 12. Outer magnetic housing; 2. Second baffle; 21. Second extension; 211. Second snap-fit ​​part; 22. Through hole; 221. First through part; 222. Second through part; 3. Third baffle; 4. Coil winding; 41. First winding; 42. Second winding; 43. Third winding; 431. First connecting part; 432. Second connecting part; 44. Fourth winding; 5. First baffle; 51. Insulating sleeve; 52. Coil slot; 53. First extension; 54. Wire slot; 55. Positioning slot; 6. First terminal. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0038] like Figures 1 to 7 As shown, this 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, each outer magnetic shell 12 is provided with a corresponding magnetic core 11; alternatively, one outer magnetic shell 12 may have a magnetic core 11, and the other outer magnetic shell 12 may be an assembly shell. In this case, the two outer magnetic shells 12 can be connected to each other by magnetic attraction, pressing, snapping, or thermal fusion. 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, with the two second shell portions respectively connected to the two ends of the first shell portion. The first shell portion is provided with the magnetic core 11. The second shell portions are raised away from the magnetic core 11, and the raised portion fits with the outer wall of the inner assembly shell, making the fit between the inner assembly shell and the outer assembly shell 1 more compact and sealed, thereby eliminating... In addition to reducing magnetic circuit air gaps caused by tolerances in traditional assembly, leakage inductance is further reduced. The inner assembly shell includes a first baffle 5 and a second baffle 2, which interlock to form a receiving cavity. An insulating sleeve 51 is provided on the side of the first baffle 5 facing the receiving cavity. Preferably, the insulating sleeve 51 has a through cavity that passes through the first baffle 5. The second baffle 2 has a through hole 22 corresponding to the insulating sleeve 51. The through hole 22 and the through cavity form a through channel for inserting a magnetic core 11. The magnetic core 11 passes through the through hole 22 and the insulating sleeve 51. The first baffle 5 has a first terminal 6, which is exposed in the assembly space. A 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] like Figures 1 to 2As shown, the first baffle 5 serves as the basic support structure of the transformer and is equipped with an insulating sleeve 51. The insulating sleeve 51 can be used to isolate the inserted magnetic core 11 and assemble and fix the coil winding 4, providing insulation protection to prevent the coil winding 4 from directly contacting other components, which could lead to short circuits or energy loss. The manufactured coil winding 4, which has been wound into a disc-shaped overlapping layer, i.e., the first winding 41, is placed in a disc shape on the insulating sleeve 51 of the first baffle 5 and accommodated in the coil slot 52. Then, the second winding 42, the third winding 43, the fourth winding 44, and the fifth winding 45 are sequentially placed on the coil winding 42. The third winding 43 and the fourth winding 44 are stacked in a disc shape on the first winding 41 and respectively fitted onto the insulating sleeve 51. It is important to note that the second connecting portion 432 of the third winding 43 passes through the first baffle 5. This allows the coil winding 4 to be quickly and securely fitted onto the insulating sleeve 51, eliminating the need to wind the coil turn by turn onto the winding frame to form the coil winding 4. This simplifies the winding process by eliminating the need for additional fixing devices, making the coil winding 4 easier to install. Furthermore, since each winding is disc-shaped and fitted onto the insulating sleeve 51, the winding is more compact, reducing interlayer distance and thus lowering leakage inductance. After the coil winding 4 is assembled onto the first baffle 5, the second baffle 2 is placed on the first baffle 5 and pressed down to achieve a snap-fit ​​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. The magnetic core 11 is then installed in the through channel of the inner assembly shell, and the two outer magnetic shells 12 are pressed together to form the transformer. The arrangement of the outer magnetic shell 12 and the magnetic core 11 forms a closed magnetic circuit, reducing magnetic resistance and further reducing leakage inductance. Finally, the input terminal and output terminal of the input winding are wound and bound to the first terminal 6 to achieve electrical connection, thereby making the leakage inductance of the transformer relatively small and suitable for high current.

[0040] In other words, 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 magnetic resistance and magnetic circuit leakage. Each winding in the coil winding 4 is directly sleeved on the insulating sleeve 51 in a disc-shaped stacked 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 junction, further reducing the leakage inductance.

[0041] like Figures 1 to 2As shown, due to the fixed structure of the transformer, 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 is inserted through the through channel and passes sequentially 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 overlapping windings, the second baffle 2, and the magnetic core 11 can be manufactured and assembled independently through modular settings, which simplifies the process steps and reduces manufacturing difficulty and cost. In particular, during maintenance and upgrades, a single module can be replaced without disassembling the entire transformer, further reducing maintenance costs.

[0042] In this embodiment, as Figures 1 to 7 The sidewall of the first baffle 5 shown is provided with a plurality of first extensions 53 along the direction facing the second baffle 2, and the first extensions 53 are exposed in the assembly space; each first extension 53 corresponds to a first engaging part 531; the sidewall of the second baffle 2 is provided with a plurality of second extensions 21 along the direction facing the first baffle 5, and the second extensions 21 are exposed in the assembly space; each second extension 21 corresponds to a second engaging part 211; wherein, the first engaging part 531 engages with the second engaging part 211. Furthermore, the first engaging portion 531 and the second engaging portion 211 are corresponding structures. Preferably, the first engaging portion 531 and the second engaging portion 211 can be concave-convex corresponding structures to achieve the purpose of engaging the first engaging portion 531 and the second engaging portion 211, that is, to achieve a stable connection between the first baffle 5 and the second baffle 2, thereby placing each winding in a disc shape on the insulating sleeve 51 and pressing it into the receiving cavity, eliminating the need for winding turn by turn, making the winding more compact, reducing the interlayer distance, and further reducing leakage inductance. Specifically, in this application, the first engaging portion 531 can be a protrusion, and the second engaging portion 211 can be a corresponding recess, with the two engaging with each other to form a mechanical lock, but not limited to the illustrated embodiment, which uses multiple protrusions to form an interlaced and complementary corresponding structure.

[0043] In this embodiment, as Figure 1 , Figure 4As shown, the first baffle 5 has a coil slot 52 for accommodating the coil winding 4 on the side facing the receiving cavity, and is concentrically arranged with the insulating sleeve 51. The design of the coil slot 52 allows the coil winding 4 to be precisely accommodated in the first baffle 5, and its concentric arrangement with the insulating sleeve 51 ensures that the center position of the coil winding 4 is aligned with the axis of the insulating sleeve 51. This structure facilitates precise positioning, simplifies the installation process, and reduces assembly errors. Furthermore, the coil slot 52 provides a fixed accommodating space for the coil winding 4, and its concentric arrangement with the insulating sleeve 51 makes the overall structure more compact and enhances its stability. This effectively prevents the coil winding 4 from shifting or loosening during operation, thereby improving the reliability and durability of the equipment. Furthermore, by concentrically arranging the coil slot 52 and the insulating sleeve 51, the coil winding 4 can be evenly distributed around the insulating sleeve 51, making the magnetic flux path highly concentrated, significantly reducing magnetic resistance and magnetic circuit leakage, thereby reducing electromagnetic interference and energy loss, and thus making the leakage inductance of the transformer 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 on 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, namely 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 disposed near 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 disposed near the second baffle 2. The first winding 41, the second winding 42, and the fourth winding 44 are 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. Preferably, the first winding 41 is a copper wire disc winding, with its input and output terminals respectively wound and connected to the first terminal 6; the second winding 42 is located on the side of the first winding 41 away from the first baffle; preferably, the second winding 42 is mainly a coil structure, with its input and output terminals respectively wound and connected to 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 is a copper sheet winding, connected to the first baffle 5 through its second connecting part 432, so that the first winding 41 and the third winding 43 form the windings of a transformer, mainly used for voltage regulation, realizing 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 set close to the second baffle 2; preferably, the fourth winding 44 is mainly a coil structure, with its input and output terminals respectively wound and connected to the first terminal 6. To elaborate further, the first winding 41 and the third winding 43 together constitute the winding part of the transformer, which is mainly used to regulate voltage and realize the voltage transmission and conversion functions in the circuit; while the second winding 42 and the fourth winding 44 are mainly coil structures, 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] The input and output windings are alternately stacked, specifically the first winding 41, the second winding 42, and the fourth winding 44, which are arranged alternately with the third winding 43 in a disc-shaped stack. By shortening the axial distance between the input and output windings, the magnetic field coupling efficiency is significantly enhanced, resulting in lower leakage inductance. The third winding 43 uses copper sheet windings, while the first winding 41, the second winding 42, and the fourth winding 44 use a coil disc structure. Through pre-formed modular assembly, the uneven inter-turn gap problem of traditional winding processes is eliminated, further suppressing leakage flux dispersion. Simultaneously, the modular arrangement of each winding allows for miniaturization of the transformer, enabling independent manufacturing and assembly, simplifying the process steps, and reducing manufacturing difficulty and cost.

[0046] In this embodiment, as Figure 1 , Figure 2 As shown, the third winding 43 includes a first connecting part 431 and a second connecting part 432. The first connecting part 431 and the second connecting part 432 are arranged at an angle. The first connecting part 431 is located between the second winding 42 and the fourth winding 44. The end of the second connecting part 432 that is away from the first connecting part 431 is connected to the first baffle 5. In further detail, the third winding 43, as a copper sheet winding, is connected to the first baffle 5 through its second connecting part 432, and together with the first winding 41, constitutes the winding part of the transformer. It is mainly used to regulate voltage and realize the transmission and conversion of circuit functions. Preferably, the first connecting part 431 has an annular hollow part, which is used to reduce weight, optimize heat dissipation, or meet specific electromagnetic performance requirements. It can also be used to adjust electromagnetic characteristics, such as reducing eddy current losses. The angled first connecting part 431 and the second connecting part 432 form an L-shaped or V-shaped structure, which improves the mechanical stability of the winding, optimizes the distribution of the electromagnetic field, and enhances the performance of the transformer. That is, the angled setting and the introduction of the annular hollow part further optimize the performance and applicability of the winding.

[0047] In this embodiment, as Figures 1 to 4 , Figure 6 As shown, the first baffle 5 is provided with a positioning groove 55; the positioning groove 55 passes through the first baffle 5; the second connecting part is inserted through the positioning groove 55 and extends from the side of the first baffle 5 away from the second baffle 2. Furthermore, the second connecting part 432 inserts into and extends out of the positioning groove 55, making the connection between the third winding 43 and the first baffle 5 more secure, able to withstand certain mechanical stress, and also enhancing the overall structural stability. In addition, through the connection method of the positioning groove 55, the position of the third winding 43 is precisely fixed, avoiding displacement caused by vibration or external force, ensuring the stability and reliability of the winding.

[0048] In this embodiment, as Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the first baffle 5 is also provided with multiple wire grooves 54, which are arranged at intervals and located near the first terminal 6. The output terminal or input terminal of the input winding is correspondingly located in the wire groove 54 and electrically connected to the first terminal 6 one by one. Each wire groove 54 corresponds to the output terminal or input terminal of the input winding. The wire groove 54 is used to fix and guide the entry and exit of the terminal, fixing the input and output wires of the input winding in a specific position, preventing the wires from shifting or loosening due to vibration or external force, thereby reducing the risk of short circuits or poor contact. In particular, the interval arrangement of the wire grooves 54 avoids direct contact between wires, further improving the safety of the equipment. Especially when maintaining or replacing the input winding, the wire grooves 54 can easily guide the wires for disassembly and reinstallation, improving maintenance efficiency. Preferably, the first baffle 5 is further provided with a plurality of first terminals 6, each first terminal 6 corresponding to a wire terminal, and electrical connection is achieved by wrapping the wires around the first terminal 6, making the connection of the wires simpler; and since the first terminals 6 are exposed in the assembly space, it is also convenient for subsequent maintenance and replacement. In addition, the first terminals 6 can be subsequently plugged into the PCB board to realize other functions, thereby improving the modularity and expandability of the equipment.

[0049] In this embodiment, as 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 and the second through portion 222 communicate 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 provided corresponding to the output terminal or input terminal of the fourth winding 44 and forms a receiving space to accommodate the output terminal or input terminal of the fourth winding 44, making the overall structure more compact and miniaturized. The second through portion 222... The aperture size of the second through-hole gradually decreases in the direction away from the first through-hole 221. Furthermore, the first through-hole 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 smoothly and align with the insulating sleeve 51, resulting in a sealed and compact overall structure. The second through-hole 222 is provided corresponding to the wire groove 54, and since the second through-hole 222 penetrates through the second baffle 2, the inlet and outlet wires of the coil winding 4 can be observed through the second through-hole 222 to determine whether the coil winding 4 has entered the wire groove 54, simplifying the wiring and installation process. In addition, the gradually decreasing aperture of the second through-hole 222 is designed to fix the wire, preventing it from loosening or shifting; it also provides a channel for air circulation, helping to improve heat dissipation performance.

[0050] In this embodiment, as Figures 1 to 7 As shown, the length of the outer magnetic housing 12 is less than the length of the inner assembly housing, so that both ends of the inner assembly housing extend out of the assembly space. The extended portion of the inner assembly housing facilitates the installation of external components; for example, terminals can be directly fixed to the extended portion, simplifying the connection process. The shortened length of the outer magnetic housing 12 reduces the overall size of the equipment, while the extended portion of the inner assembly housing makes full use of external space, achieving efficient space utilization and miniaturizing the transformer. It also helps reduce electromagnetic interference and energy loss, resulting in a relatively low leakage inductance. Furthermore, the extended portion of the inner assembly housing increases the heat dissipation area, which is beneficial for heat dissipation and improves the operational stability of the equipment.

[0051] In this embodiment, as Figure 1 , Figure 4 , Figure 5 and Figure 7As shown, it also includes a third baffle 3, which is located on the side of the second baffle 2 away from the first baffle 5, i.e., on the outer side of the second baffle 2, and is positioned close to the second through-hole 222. It works in conjunction with the second through-hole 222 to provide additional protection for the output or input terminals of the fourth winding 44, preventing damage to the wires from external objects or forces. The third baffle 3 is spaced apart from the outer magnetic shell 12 and is exposed in the assembly space. The third baffle 3 acts as a limiting block, providing positioning and guidance for the magnetic core 11 when it is assembled onto the first baffle 5 and the second baffle 2, facilitating installation and maintenance. Furthermore, the spacing between the third baffle 3 and the outer magnetic shell 12 forms a ventilation channel, which is beneficial for heat dissipation inside the equipment and prevents performance degradation or damage due to overheating.

[0052] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0054] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0057] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A modular transformer, characterized by The utility model relates to a coil assembly structure of a transformer, which comprises: an outer assembly shell (1) comprising two outer magnetic shells (12) and a magnetic core (11), the two outer magnetic shells (12) enclosing an assembly space, and the magnetic core (11) being arranged in the assembly space and connected to the outer magnetic shells (12); an inner assembly shell arranged in the assembly space, the inner assembly shell comprising a first baffle (5) and a second baffle (2), the first baffle (5) and the second baffle (2) being clamped to each other to form a containing cavity, the first baffle (5) being provided with an insulating sleeve (51) on the side facing the containing cavity, the second baffle (2) being provided with a through hole (22) corresponding to the insulating sleeve (51), the magnetic core (11) being arranged in the through hole (22) and the insulating sleeve (51), and the first baffle (5) being provided with a first terminal (6) exposed to the assembly space; a coil winding (4) arranged in the containing cavity and sleeved on the insulating sleeve (51), the coil winding (4) being electrically connected to the first terminal (6) at the input end, and the output end of the coil winding being exposed to the assembly space.

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

3. The modular transformer of claim 1, wherein, The side of the first baffle (5) facing the containing cavity is provided with a coil groove (52) for accommodating the coil winding (4) and is concentrically arranged with the insulating sleeve (51).

4. The modular transformer of claim 3, wherein, The coil winding (4) comprises an input winding and an output winding, the input winding and the output winding being sleeved on the insulating sleeve (51), the input winding being electrically connected to the first terminal (6), and the output end of the output winding being exposed to the assembly space.

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

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

7. The modular transformer of claim 6, wherein, The first baffle (5) is provided with a positioning groove (55); the positioning groove (55) penetrates through the first baffle (5); the second connecting part (432) penetrates through the positioning groove (55) and extends out from the side of the first baffle (5) away from the second baffle (2).

8. The modular transformer of claim 4, wherein, The first baffle (5) is further provided with a plurality of wire grooves (54), the plurality of wire grooves (54) are arranged at intervals and arranged close to the first terminal (6); the output terminal or input terminal of the input winding is arranged in the wire groove (54) correspondingly and electrically connected with the first terminal (6) one by one.

9. The modular transformer of claim 5, wherein, The through hole (22) comprises a first through part (221) and a second through part (222), the first through part (221) is communicated with the second through part (222); the first through part (221) is coaxially arranged with the insulating sleeve (51) and forms a through channel with the insulating sleeve (51); the second through part (222) is arranged corresponding to the output terminal or input terminal of the fourth winding (44) and forms a containing space containing the output terminal or input terminal of the fourth winding (44); The aperture size of the second through part (222) gradually decreases in the direction away from the first through part (221).

10. The modular transformer of any of claims 1 to 9, wherein, The length of the outer magnetic shell is less than the length of the inner assembly shell, so that the two ends of the inner assembly shell extend out of the assembly space.

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