Windings and transformers

Abstract

This application discloses a winding and a transformer, belonging to the field of power electronics technology. The winding includes a disc-shaped segment and a cylindrical segment connected along the axial direction; the disc-shaped segment includes multiple turns of the first wire layer, which are concentrically wound radially from the outside to the inside, and the outermost first wire layer is provided with a first connecting end; the cylindrical segment includes multiple turns of cylindrical sub-segments, which are arranged radially and connected to each other, and each cylindrical sub-segment includes multiple turns of the second wire layer arranged axially; wherein, the innermost first wire layer and the second wire layer of the innermost cylindrical sub-segment are connected. Therefore, the input and output ends of the winding are both located on the outermost layer, giving the winding the advantage of convenient outer layer output, and the winding can flexibly expand the number of segments and layers to adapt to different application scenarios and improve the overall power density of the transformer.

Description

Technical Field

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

[0002] Commonly used windings are mainly of two types: cylindrical and disc-shaped. Cylindrical windings are wound layer by layer, which is simple in process, but the input and output wires are placed at different layers, which requires additional axial space, resulting in low axial fill rate. When winding multiple layers, conductor misalignment and collapse are prone to occur when raising layers or crossing sections, and the forming stability is poor. Disc-shaped windings have all output wires located on the outer layer, which is convenient for leading out, but their structure is mostly in an even number of segments, which lacks flexibility in axial segmentation. The winding and shaping process is complex, making it difficult to adapt to application scenarios with different capacities and frequencies.

[0003] In large-capacity medium-frequency medium-voltage transformers, to reduce high-frequency copper losses, the windings need to be compactly distributed axially and have small radial dimensions. On the low-voltage side, multiple winding discs are often connected in parallel to meet high current requirements. The two existing types of windings cannot simultaneously achieve convenient incoming and outgoing lines, axial fill rate, radial dimension control, and winding process feasibility. The expansion of the number of segments and layers is limited, and they cannot meet the design requirements of high-frequency, high-power-density transformers. Summary of the Invention

[0004] This application provides a winding and a transformer to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a winding is provided, the winding comprising a disc-shaped segment and a cylindrical segment connected axially; The disc segment includes multiple layers of first lines, with the outermost layer of first lines having a first connecting end. The cylindrical segment includes multiple cylindrical sub-segments, which are arranged radially and connected to each other. Each cylindrical sub-segment includes multiple second wire layers arranged axially. The outermost second wire layer is provided with a second connecting end, and the number of turns of the first wire layer is the same as the number of turns of the cylindrical sub-segment. The innermost first line layer and the innermost cylindrical sub-segment are connected.

[0006] In some embodiments of this application, the multiple loops of the cylindrical sub-segments are connected sequentially to form an S-shaped trace.

[0007] In some embodiments of this application, each of the cylindrical segments has transition sections at both ends in the axial direction; The winding also includes a support member, and one support member is provided for each transition section; The support member is axially fitted with the transition section of the cylindrical sub-segment and radially fitted with the adjacent first or second line layer.

[0008] In some embodiments of this application, the support member has a first surface and a second surface that are opposite to each other in the axial direction; When the support member is located in the innermost cylindrical segment and near one end of the disc segment, The first surface is in contact with the transition section, and the second surface is flush with the axial surface of the outermost first line layer. When the support member is located in the innermost cylindrical segment and away from the disc segment, The first surface is in contact with the transition section, and the second surface is flush with the axial end face of the corresponding cylindrical sub-segment.

[0009] In some embodiments of this application, the support member has a first side and a second side that are opposite each other in the radial direction. In the innermost cylindrical sub-segment... The first side surface of one of the support members is co-conformally disposed with the inner surface of the innermost first line layer in the radial direction, and the second side surface is co-conformally disposed with the outer surface of the innermost first line layer in the radial direction. The first side of the other support member is co-conformally disposed with the inner surface of the second line layer of the innermost cylindrical sub-segment and away from the end of the disc segment, and the second side is co-conformally disposed with the outer surface of the second line layer of the innermost cylindrical sub-segment and away from the end of the disc segment.

[0010] In some embodiments of this application, in the outermost cylindrical segment, The first side of one of the support members is co-conformally disposed with the inner surface of the second line layer of the outermost cylindrical sub-segment and near one end of the disc segment, and the second side is co-conformally disposed with the outer surface of the second line layer of the outermost cylindrical sub-segment and near one end of the disc segment. The first side of the other support member is co-conformally disposed with the inner surface of the second line layer of the outermost cylindrical sub-segment and away from the end of the disc segment, and the second side is co-conformally disposed with the outer surface of the second line layer of the outermost cylindrical sub-segment and away from the end of the disc segment.

[0011] In some embodiments of this application, in the cylindrical segment located between the innermost and outermost cylindrical segments, one support member is axially located between the first and second line layers and radially abuts against two adjacent second line layers, and the other support member is axially located at the end of the cylindrical segment away from the first line layer and radially abuts against two adjacent second line layers.

[0012] In some embodiments of this application, the winding has a reference plane perpendicular to the axial direction. In any two connected cylindrical segments, the orthographic projection of the support member on one cylindrical segment onto the reference plane does not overlap with the orthographic projection of the support member on the other cylindrical segment onto the reference plane.

[0013] In some embodiments of this application, the support member has a first end and a second end disposed opposite to each other, wherein the size of the first end is larger than the size of the second end; In the same cylindrical segment, the first end of one support member is disposed on the same side as the second end of another support member.

[0014] In some embodiments of this application, the winding has a reference plane perpendicular to the axial direction. In the same cylindrical segment, the orthographic projection of one support member onto the reference plane at least partially coincides with the orthographic projection of the other support member onto the reference plane.

[0015] In some embodiments of this application, in one of the support members, the axial dimension of the support member decreases from the first end to the second end.

[0016] In some embodiments of this application, the support member has a first side and a second side that are arranged opposite each other in the radial direction. The first side connects the first surface and the second surface in the axial direction, and the second side connects the first surface and the second surface in the axial direction. The first side and the second side are connected by a transition surface, wherein the transition surface is located at a first end of the support member and is in contact with the first line layer or the second line layer.

[0017] In some embodiments of this application, the transition surface is a planar structure or a stepped structure.

[0018] According to a second aspect of this application, a transformer is provided, comprising: A magnetic core, the magnetic core comprising a core post; and In any of the embodiments described above, multiple windings are all sleeved around the outer periphery of the core post.

[0019] In the winding and transformer of this application embodiment, the winding has disc-shaped segments and cylindrical segments connected along the axial direction, and the input and output ends of the winding are both located on the outermost layer, giving the winding the advantage of convenient outer layer output. The disc-shaped segment and the inner ring of the cylindrical segment are connected, making the winding structure compact and dimensionally efficient. At the same time, the winding can be flexibly expanded in terms of the number of segments and layers to adapt to different application scenarios and improve the overall power density of the transformer.

[0020] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0023] Figure 1 This is a schematic diagram of the overall structure of the winding provided in an exemplary embodiment of this application. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the winding provided in an exemplary embodiment of this application. Figure 2 ; Figure 3 This is the winding topology provided in the exemplary embodiments of this application. Figure 1 ; Figure 4 This is a schematic diagram of the overall structure of the winding provided in an exemplary embodiment of this application. Figure 3 ; Figure 5 This application Figure 4 A schematic diagram of the support member in the embodiment shown; Figure 6 This is a schematic diagram of the overall structure of the winding provided in an exemplary embodiment of this application. Figure 4 ; Figure 7 This is a schematic diagram of the overall structure of the winding provided in an exemplary embodiment of this application. Figure 5 ; Figure 8 This is a side view of the winding inner layer structure provided in an exemplary embodiment of this application. Figure 1 ; Figure 9 This is a side view of the winding outer layer structure provided in an exemplary embodiment of this application. Figure 1 ; Figure 10 This is a schematic diagram of the structure of the support member provided in an exemplary embodiment of this application. Figure 1 ; Figure 11 This is a schematic diagram of the structure of the support member provided in an exemplary embodiment of this application. Figure 2 ; Figure 12 This is the winding topology provided in the exemplary embodiments of this application. Figure 2 ; Figure 13 This is a side view of the winding inner layer structure provided in an exemplary embodiment of this application. Figure 2 ; Figure 14 This is a side view of the winding intermediate layer structure provided in an exemplary embodiment of this application; Figure 15 This is a side view of the winding outer layer structure provided in an exemplary embodiment of this application. Figure 2 ; Figure 16 This is a schematic diagram of the structure of a transformer provided in an exemplary embodiment of this application.

[0024] Explanation of reference numerals in the attached figures: 10-Piece segment; 11-First line layer; 12-First connecting end; 20 - Cylindrical section; 21 - Cylindrical sub-section; 211 - Second line layer; 22 - Second connecting end; 23 - Transition section; 1-First turn; 2-Second turn; 3-Third turn; 4-Fourth turn; 5-Fifth turn; 6-Sixth turn; 30 - Support member; 31 - First surface; 32 - Second surface; 33 - First side surface; 34 - Second side surface; 35 - First end; 36 - Second end; 37 - Transition surface; Y-axis; X-radial; P-reference plane; Q-circumferential; a-first boundary line; b-second boundary line; c-third boundary line; 100 - Winding; 200 - Core post. Detailed Implementation

[0025] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0026] In power electronic transformers, especially in the field of medium-frequency, medium-voltage, and high-frequency magnetic components, the windings directly determine the transformer's losses, heat dissipation, insulation coordination, and power density. Traditional windings are mainly divided into two categories: cylindrical windings and disc windings.

[0027] Cylindrical windings employ a layer-by-layer winding method, with the first turn entering the winding in the inner layer or at the end, and the last turn exiting in the outer layer, making the winding process relatively simple. However, the dispersed entry and exit points of cylindrical windings require additional axial space for the exit points, resulting in redundant axial dimensions and a low fill factor. Furthermore, layer-by-layer and segment-by-segment transitions are difficult during multi-layer winding, leading to winding misalignment and collapse, which is detrimental to automated forming.

[0028] The disc winding consists of a disc-shaped structure formed by multiple turns of concentric ring conductors. The first and last leads can be arranged on the outside of the winding, making it convenient for lead-out and parallel connection. It is often used in multi-line disc parallel structures and high-voltage windings of medium and high-voltage transformers. However, conventional disc windings are mostly of an even number of segments, with poor axial segmentation flexibility and complex winding and shaping processes. It is difficult to flexibly adjust the number of segments and layers according to capacity, frequency, and heat dissipation requirements. Furthermore, disc windings lack stable support structures during inter-segment transitions, inter-turn guidance, and inter-layer layer increases, making it difficult to guarantee winding accuracy and structural consistency.

[0029] In large-capacity medium-frequency medium-voltage transformers, to reduce high-frequency copper losses, windings are typically required to be fully distributed axially and have compact radial dimensions. Simultaneously, multiple sets of coil windings need to be connected in parallel on the low-voltage side to meet high current demands. Existing cylindrical and coil windings cannot simultaneously meet the requirements of convenient line entry and exit, axial fill rate, radial dimension control, winding design manufacturability, and flexible expansion of the number of sections and layers, thus failing to adapt to the development needs of high-frequency, high-power-density transformers.

[0030] In view of this, this application provides a winding and transformer that combines the advantages of cylindrical windings and disc windings, enables multi-segment staggered winding, and improves structural compactness and process feasibility. A detailed description is provided below with reference to the accompanying drawings.

[0031] Please see Figure 1 and Figure 2 Winding 100 has intersecting axial Y and radial X, winding 100 (see Figure 16 The device includes a disc-shaped segment 10 and a cylindrical segment 20 connected along the axial direction Y. The disc-shaped segment 10 includes multiple turns of first wire layers 11, which are concentrically wound from the outside to the inside along the radial direction X, and the outermost first wire layer 11 is provided with a first connecting end 12. The cylindrical segment 20 includes multiple turns of cylindrical sub-segments 21, which are arranged along the radial direction X and connected to each other. Each cylindrical sub-segment 21 includes multiple turns of second wire layers 211 arranged along the axial direction Y, and the outermost second wire layer 211 is provided with a second connecting end 22. The innermost first wire layer 11 and the second wire layer 211 of the innermost cylindrical sub-segment 21 are connected.

[0032] By adopting the above technical solution, the conductor is wound into disc-shaped segments 10 and cylindrical segments 20 connected along the axial direction Y, so that the inlet and outlet ends of the winding 100 are located on the outermost layer, thus realizing the advantage of convenient outer layer exit of the winding 100. Among them, the cylindrical segment 20 can be wound layer by layer, which has the characteristics of simple winding and stable forming of the cylindrical winding 100. The disc-shaped segment 10 and the inner ring of the cylindrical segment 20 are connected, making the structure of the winding 100 compact and the size utilization rate high. At the same time, the winding 100 can be flexibly expanded in terms of the number of segments and layers to adapt to different application scenarios and improve the overall power density of the transformer.

[0033] Specifically, by defining the intersecting axial direction Y and radial direction X, the spatial layout reference of the winding 100 can be clearly defined, facilitating the orderly arrangement, size control, and insulation and heat dissipation design of the winding 100 in the axial direction Y and radial direction X, thus providing a foundation for the compact structure of high-frequency, high-power-density transformers. It should be noted that the radial X arrow in the figure is only for illustration; in the embodiment of this application, radial X refers to the direction along the diameter of the winding 10.

[0034] The disc-shaped segment 10 includes multiple turns of the first wire layer 11, which are concentrically wound from the outside to the inside along the radial direction X. This allows the disc-shaped segment 10 to form a regular concentric disc-shaped structure, ensuring uniform winding arrangement and structural stability. By setting a first connecting end 12 on the outermost first wire layer 11, the input end of the winding 100 is located on the outermost layer of the winding 100. This retains the inherent advantage of the outer layer of the disc-shaped winding 100, facilitating input lead-out, wiring operations, and parallel expansion, without requiring additional space inside or at the end of the winding 100.

[0035] The cylindrical section 20 includes multi-turn cylindrical sub-sections 21, which are arranged radially X and connected to each other. This allows the cylindrical section 20 to form a stable multi-layer structure radially X, enabling the use of the mature process of winding traditional cylindrical windings 100 layer by layer, reducing winding difficulty, improving winding consistency and forming reliability, and possessing the characteristics of easy winding of cylindrical windings 100. Each cylindrical sub-section 21 includes a multi-turn second wire layer 211 arranged axially Y, allowing the cylindrical section 20 to extend orderly along the axial Y, facilitating the adjustment of the axial Y length according to transformer capacity, voltage level, and heat dissipation requirements, and improving structural adaptability. The outermost second wire layer 211 is provided with a second connection end 22, so that the output end of the winding 100 is also located on the outermost layer of the winding 100, realizing that both the input and output ends are externally and uniformly arranged, facilitating output lead-out, external connection, and insulation treatment, and simplifying the assembly process.

[0036] In some embodiments, the number of turns of the first wire layer 11 is the same as the number of turns of the cylindrical sub-segment 21, which can ensure that the number of layers of the disc segment 10 and the cylindrical segment 20 are matched in the radial X direction, making the overall radial X dimension of the winding 100 regular and symmetrical, improving the radial X space utilization rate, and reducing local bulges or size redundancy caused by layer mismatch.

[0037] When the number of turns in the first winding layer 11 is the same as the number of turns in the cylindrical segment 21, due to the multiple turns of the second winding layer 211 arranged along the axial direction Y in the cylindrical segment 21, the number of second winding layers 211 in the outermost cylindrical segment 21 can be less than or equal to the number of second winding layers 211 in the other cylindrical segments 21. This embodiment illustrates that the number of second winding layers 211 in the outermost cylindrical segment 21 can be equal to the number of second winding layers 211 in the other cylindrical segments 21. Therefore, this application can effectively control the maximum radial dimension of the winding while maintaining matching of the radial layer count and consistency of electrical parameters, making the winding end face flatter and more regular, reducing end protrusions and dimensional redundancy, and improving space utilization and power density.

[0038] The innermost first wire layer 11 and the innermost cylindrical sub-segment 21 second wire layer 211 are connected, so that the disc segment 10 and the cylindrical segment 20 are connected internally in the winding 100. There are no extra cross wires or leads on the outside, which reduces the waste of axial Y and radial X dimensions and improves the overall compactness of the winding 100. At the same time, this connection method allows the winding 100 to be flexibly expanded according to actual needs and adapt to application scenarios with different frequencies, capacities and heat dissipation requirements.

[0039] Please see Figure 3 The multiple turns of the cylindrical sub-segments 21 are sequentially connected to form an S-shaped routing. It can be understood that in the multi-turn cylindrical sub-segments 21, one end of a cylindrical sub-segment 21 in the axial Y direction is connected to an adjacent cylindrical sub-segment 21 in the radial X direction, and the other end in the axial Y direction is connected to another adjacent cylindrical sub-segment 21 in the radial X direction. Simply put, a cylindrical sub-segment 21 is connected to the previous cylindrical sub-segment 21 at the end near the disc-shaped segment 10, and also to the next cylindrical sub-segment 21 at the end away from the disc-shaped segment 10, thus allowing the conductors to be continuously arranged back and forth in the axial Y direction, forming a stable multi-layered cylindrical segment 20. This winding method is smoother and less prone to deviation or collapse. The connection point of two connected cylindrical sub-segments 21 is located at both ends of the cylindrical segment 20, avoiding the generation of additional leads, protrusions, or radial X redundancy in the middle of the winding 100, resulting in higher axial Y dimension utilization of the winding 100, a more regular overall shape, and facilitating the realization of a compact transformer.

[0040] For example, Figures 1 to 3 In the embodiment shown, the winding 100 is continuously wound from a single wire, forming six turns connected in sequence after winding. This ensures that the conductive path of the winding 100 is continuous and complete, reduces the number of lead wire joints, reduces contact loss and connection risks under high-frequency operating conditions, and improves the electrical reliability of the winding 100.

[0041] The winding 100 has a two-layer structure in the radial direction X and a three-layer arrangement in the axial direction Y. The first turn 1 is located on the outer periphery of the second turn 2, and both are arranged in the same layer in the radial direction X, together forming the disc-shaped segment 10 of the winding 100. The third turn 3 and the fourth turn 4 are located on the same side of the second turn 2, and the second turn 2, third turn 3, and fourth turn 4 are arranged alternately along the axial direction Y and in the same layer. The fifth turn 5 is located on the outer periphery of the fourth turn 4, and both are arranged in the same layer in the radial direction X; the sixth turn 6 is located on the outer periphery of the third turn 3, and both are arranged in the same layer in the radial direction X; the third turn 3, fourth turn 4, fifth turn 5, and sixth turn 6 together form the cylindrical segment 20 of the winding 100. In this embodiment, the first turn 1, fifth turn 5, and sixth turn 6 together form the outer layer structure of the winding 100, and the second turn 2, third turn 3, and fourth turn 4 together form the inner layer structure of the winding 100. Figure 3 The arrow connecting to the first turn 1 is the first connection end 12, and the arrow connecting to the sixth turn 6 is the second connection end 22.

[0042] During winding, firstly, the second turn 2 is wound to form the inner layer structure of the disc segment 10. Then, the first turn 1 is wound around the outer periphery of the second turn 2 to form the outer layer structure of the disc segment 10. Subsequently, on the axial Y side of the second turn 2, the third turn 3 and the fourth turn 4, which are approximately coaxial with the second turn 2, are wound sequentially to form the inner layer structure of the cylindrical segment 20. Finally, on the outer periphery of the inner layer structure of the cylindrical segment 20, the fifth turn 5 and the sixth turn 6, which are approximately coaxial with the first turn 1, are wound sequentially to form the outer layer structure of the cylindrical segment 20. The winding method of the cylindrical segment 20 is similar to the winding structure of a spring. It should be noted that the embodiments of this application include, but are not limited to, the above winding method, which will not be elaborated further here.

[0043] Therefore, the winding 100 of this application combines the disc-shaped section 10 and the cylindrical section 20, so that the winding 100 has the dual advantages of convenient outer layer wire output of the disc-shaped winding 100 and simple winding process of the cylindrical winding 100. Moreover, the structure can be flexibly expanded by adjusting the number of sections, layers and arrangement, which can be adapted to medium-frequency and medium-voltage transformer application scenarios with different capacities, frequencies and voltage levels, thereby improving the versatility and applicability of the winding 100 structure.

[0044] Please see Figures 4 to 6Each cylindrical segment 21 has a transition section 23 at both ends in the axial Y direction; the winding 100 also includes a support member 30, with one support member 30 corresponding to one transition section 23; the support member 30 has a first surface 31 and a second surface 32 arranged opposite to each other in the axial Y direction; when the support member 30 is located in the innermost cylindrical segment 21 and close to one end of the disc segment 10, the first surface 31 is in contact with the transition section 23, and the second surface 32 is flush with the surface of the outermost first wire layer 11 in the axial Y direction; when the support member 30 is located in the innermost cylindrical segment 21 and away from the disc segment 10, the first surface 31 is in contact with the transition section 23, and the second surface 32 is flush with one end face of the corresponding cylindrical segment 21 in the axial Y direction.

[0045] It is understandable that each cylindrical segment 21 has a transition section 23 at both ends in the axial Y direction, and a support member 30 is configured for each transition section 23. This can effectively support and limit the transition position of the conductor at the end of the cylindrical segment 21, avoid conductor deviation, collapse or bending during the winding process, and improve the forming stability and winding smoothness of the winding 100. The support member 30 has a first surface 31 and a second surface 32 opposite each other in the axial Y direction. When the support member 30 is located at the innermost cylindrical sub-segment 21 and close to one end of the disc-shaped segment 10, the first surface 31 is in contact with the transition segment 23, and the second surface 32 is flush with the axial Y surface of the outermost first wire layer 11. When the support member 30 is located at the innermost cylindrical sub-segment 21 and away from one end of the disc-shaped segment 10, the first surface 31 is in contact with the transition segment 23, and the second surface 32 is flush with the axial Y side end face of the corresponding cylindrical sub-segment 21. This makes the end faces of both ends of the winding 100 in the axial Y direction flat and uniform, eliminates axial Y dimension redundancy, and improves space utilization and structural regularity. At the same time, the support member 30 can provide mechanical support and positioning reference for the ends of the winding 100, improving structural symmetry and assembly convenience.

[0046] In the context, “transition segment 23” can be understood as the connection position between the innermost first line layer 11 of the pie segment 10 and the innermost cylindrical sub-segment 21 second line layer, or the position where a cylindrical sub-segment 11 (such as the inner cylindrical sub-segment 11 connects to an adjacent cylindrical sub-segment 11) can be understood as the connection position between the innermost cylindrical sub-segment 11 and an adjacent cylindrical sub-segment 11.

[0047] Please see Figures 4 to 5 The support member 30 is in contact with the transition section 23 of the cylindrical sub-segment 21 in the axial Y direction, and is co-curved with the adjacent first line layer 11 or second line layer 211 in the radial X direction.

[0048] The support member 30 has a first side 33 and a second side 34 arranged opposite to each other in the radial X direction. With the center of the winding 100 (such as the center of a circle) as a reference, the first side 33 is a surface of the support member 30 close to the center of the winding 100, that is, the inner surface of the support member 30, and the second side 34 is a surface of the support member 30 away from the center of the winding 100, that is, the outer surface of the support member 30.

[0049] In the innermost cylindrical segment 21, the first side 33 of a support member 30 is cosurfaced with the inner surface of the innermost first line layer 11 in the radial X direction, and the second side 34 is cosurfaced with the outer surface of the innermost first line layer 11 in the radial X direction. It is understood that, as... Figure 4 and Figure 5 As shown, the inner surface of the upper support member 30 and the inner surface of the innermost first line layer 11 are co-curved in the circumferential direction, and the outer surface of the upper support member 30 and the outer surface of the innermost first line layer 11 are co-curved in the circumferential direction. Furthermore, the outer surface of the upper support member 30 is in contact with the inner surface of the first line layer 11 adjacent to it in the radial X direction.

[0050] In this context, "co-surface setting" refers to the complete fit of the mating contact surfaces of two or more components, sharing the same spatial curved surface contour, with the curvature, arc, and trend of the mating surfaces perfectly matched. In this application, the side of the support member 30 is completely fitted with the corresponding line layer, sharing the same spatial curved surface contour, with the curvature, arc, and trend of the mating surfaces perfectly matched.

[0051] In the innermost cylindrical segment 21, the first side 33 of another support member 30 is co-conformally disposed with the inner surface of the second line layer 211 of the innermost cylindrical segment 21 and the end away from the disc segment 10 in the radial X direction, and the second side 34 is co-conformally disposed with the outer surface of the second line layer 211 of the innermost cylindrical segment 21 and the end away from the disc segment 10. It can be understood that, as Figure 4 and Figure 5 As shown, the inner surface of the lower support member 30 and the inner surface of the innermost second line layer 211 are co-curved in the circumferential direction, and the outer surface of the lower support member 30 and the outer surface of the innermost second line layer 211 are co-curved in the circumferential direction.

[0052] In the outermost cylindrical segment 21, the first side 33 of a support member 30 is co-conformally disposed with the inner surface of the second linear layer 211 of the outermost cylindrical segment 21 and near the end of the disc segment 10, and the second side 34 is co-conformally disposed with the outer surface of the second linear layer 211 of the outermost cylindrical segment 21 and near the end of the disc segment 10. It is understood that, as Figure 5 and Figure 6As shown, the inner surface of the lower support member 30 and the inner surface of the outermost second line layer 211 are co-curved in the circumferential direction, and the outer surface of the lower support member 30 and the outer surface of the outermost second line layer 211 are co-curved in the circumferential direction.

[0053] In the outermost cylindrical segment 21, the first side 33 of another support member 30 is co-conformally disposed with the inner surface of the second line layer 211 of the outermost cylindrical segment 21 and the end away from the disc segment 10, and the second side 34 is co-conformally disposed with the outer surface of the second line layer 211 of the outermost cylindrical segment 21 and the end away from the disc segment 10. It is understood that, as Figure 5 and Figure 6 As shown, the inner surface of the upper support member 30 and the inner surface of the outermost second line layer 211 are co-curved in the circumferential direction, and the outer surface of the upper support member 30 and the outer surface of the outermost second line layer 211 are co-curved in the circumferential direction.

[0054] Therefore, by setting the support member 30 to be co-concave with the innermost first wire layer 11 or second wire layer 211, the support member 30 can provide bidirectional support to the cylindrical sub-segment 21 from the innermost and outermost radial X sides of the winding 100, effectively solving the problems of loosening, collapse, offset, or deformation of the conductors during winding and operation, and improving the overall structural stability and forming regularity of the winding 100. At the same time, setting one support member 30 at the end of the cylindrical sub-segment 21 closer to the disc-shaped segment 10 and setting the other support member 30 at the end of the cylindrical sub-segment 21 away from the disc-shaped segment 10 can effectively guide the skipping turns, layer increases, and transition positions of the winding 100, ensuring a continuous and smooth winding path; and effectively constraining the radial X dimension of the winding 100, making the inner and outer diameters uniform and the end faces flush, thus improving space utilization. In addition, this symmetrical support structure can make the winding 100 uniformly stressed, optimize the electric field distribution at the ends, reduce the risk of partial discharge, improve the insulation performance and operational reliability under medium frequency and medium voltage conditions, and has strong structural adaptability, which can meet the expansion needs of different number of segments and layers.

[0055] In some embodiments, in the cylindrical segment 21 located between the innermost cylindrical segment 21 and the outermost cylindrical segment 21, one support 30 is located in the axial direction Y between the first line layer 11 and the second line layer 211 and is in contact with two adjacent second line layers 211 in the radial direction X, and another support 30 is located in the axial direction Y at one end of the cylindrical segment 21 away from the first line layer 11 and is in contact with two adjacent second line layers 211 in the radial direction X.

[0056] Understandably, on each intermediate cylindrical segment 21 between the innermost and outermost cylindrical segments 21, a support member 30 is arranged axially Y between the first wire layer 11 of the disc segment 10 and the second wire layer 211 of the cylindrical segment 21, and radially X clamps the two adjacent second wire layers 211. Another support member 30 is arranged axially Y at the end of the cylindrical segment 21 away from the first wire layer 11 of the disc segment 10, and similarly radially X-fits the adjacent second wire layer 211. This achieves axial Y-limiting and radial X-bidirectional clamping of the intermediate layer structure of the winding 100, ensuring that the second wire layers 211 are arranged regularly with uniform gaps, avoiding radial X-shifting, inward shrinkage, or axial Y-shifting. At the same time, it can effectively maintain the interlayer insulation spacing, optimize the electric field distribution, and reduce the risk of partial discharge; it can also disperse the stress on the winding 100, avoid stress concentration, improve the overall mechanical strength and vibration resistance, and play a shaping and guiding role for the conductor layering and transition section 23, reducing the winding difficulty. Moreover, the structure can be flexibly expanded according to the number of winding 100 layers, making it highly versatile.

[0057] Please see Figure 7 In the cylindrical section 20, the orthographic projection of the support member 30 on the reference plane P on any one cylindrical sub-section 21 does not overlap with the orthographic projection of the support member 30 on the reference plane P on another cylindrical sub-section 21. This avoids interference caused by the overlapping of adjacent support members 30, reducing the risk of sudden changes in local dimensions and local radial thickening of the winding 100. At the same time, it can evenly distribute the support points and mechanical stress along the circumferential direction Q, avoiding stress concentration and improving the overall vibration resistance and structural stability of the winding 100. This staggered layout can also form a uniform heat dissipation and insulation gap, improving the heat dissipation conditions of the winding 100 and ensuring the electrical insulation safety distance. Moreover, without mutual obstruction and position jamming, it facilitates the transition of conductor layers and the assembly and positioning of support members 30, simplifies the winding forming process, and makes the circumferential arrangement of the winding 100 more regular.

[0058] For example, since two support members 30 are provided on a cylindrical segment 21, the "orthographic projection of the support member 30 on the cylindrical segment 21 onto the reference plane P" can be understood as the combination of the orthographic projections of the two support members 30 on the cylindrical segment 21 onto the reference plane P.

[0059] When the positions of the two support members 30 on the reference plane P are completely coincident, the orthographic projection area of ​​the two support members 30 on the reference plane P of a cylindrical segment 21 is equal to the orthographic projection area of ​​a single support member 30 on the reference plane P.

[0060] When the positions of the two support members 30 on the reference plane P partially coincide, the orthographic projection area of ​​the two support members 30 on the reference plane P on a cylindrical segment 21 is the sum of the orthographic projection areas of the two support members 30 on the reference plane P.

[0061] Figure 7 In the illustrated embodiment, the cylindrical segment 20 has two interconnected cylindrical sub-segments 21. In these two cylindrical sub-segments 21, the orthographic projection of the support member 30 on the inner cylindrical sub-segment 21 onto the reference plane P does not overlap with the orthographic projection of the support member 30 on the outer cylindrical sub-segment 21. In this way, the multiple support members 30 can be divided into at least two groups, and each group of support members 30 is spaced apart on the circumferential direction Q of the winding 100 without interfering with each other.

[0062] Please see Figure 5 The support member 30 has a first end 35 and a second end 36 disposed opposite to each other, wherein the size of the first end 35 is larger than the size of the second end 36. For example... Figure 7 As shown, in the same cylindrical segment 21, the first end 35 of one support member 30 and the second end 36 of another support member 30 are arranged on the same side in the circumferential direction.

[0063] Understandably, the support member 30 adopts an irregular structure with one end larger and the other smaller to facilitate assembly alignment and directional installation, while also adapting to the support and limiting requirements at different positions at the ends of the winding 100. On the same cylindrical sub-segment 21, the large end of one support member 30 and the small end of another support member 30 are set on the same side, which enables the support force of the entire cylindrical sub-segment 21 to be evenly distributed, reducing local stress concentration, reasonably adapting to the arrangement space of the conductor layer and the transition section 23, maintaining the regularity of the circumferential Q structure of the winding 100, and taking into account both mechanical support stability and winding process adaptability.

[0064] Please see Figure 7 The winding 100 has a reference plane P perpendicular to the axial direction Y. In the same cylindrical segment 21, the orthographic projection of one support 30 on the reference plane P at least partially coincides with the orthographic projection of another support 30 on the reference plane P.

[0065] In some embodiments, please refer to Figure 8 and Figure 9 , Figure 8 The inner structure of winding 100 is shown in the diagram. Figure 9 The outer structure of the winding 100 is illustrated, wherein the winding 100 has a first dividing line a. In the inner structure, two inner support members 30 are located above the first dividing line a, and are thus arranged such that the two inner support members 30... Figure 8 The diagram illustrates that the two inner support members 30 completely overlap in orthographic projection on a reference plane P perpendicular to the axial direction Y. In the outer structure, the two outer support members 30 are located below the first dividing line a. This arrangement ensures that the two outer support members 30 at least partially overlap in orthographic projection on the reference plane P perpendicular to the axial direction Y. Figure 9 The diagram illustrates that the two outer support members 30 are completely coincident when projected onto a reference plane P perpendicular to the axial direction Y. Figure 8and Figure 9 In the embodiment shown, the orthographic projection of the inner support member 30 onto the reference plane P perpendicular to the axial direction Y and the orthographic projection of the outer support member 30 onto the reference plane P perpendicular to the axial direction Y do not overlap. This ensures that the inner support member 30 and the outer support member 30 do not overlap in the axial direction Y, reducing the risk of sudden changes in local dimensions and local radial X thickening of the winding 100.

[0066] Therefore, the orthographic projections of the two support members 30 on the reference plane P on the same cylindrical segment 21 coincide, enabling the two support members 30 to be aligned and coaxially arranged in the circumferential direction Q, forming symmetrical bidirectional support for the cylindrical segment 21, evenly distributing electromagnetic and thermal stresses, and avoiding local stress concentrations. At the same time, it can provide circumferential Q and radial X-limiting constraints on the conductor, suppressing conductor offset, loosening, and deformation, and improving the overall flatness and structural stability of the winding 100. In addition, this alignment layout can stably maintain the interlayer insulation gap, optimize heat dissipation and electric field distribution, and provide a unified positioning benchmark for winding assembly, simplifying tooling positioning and conductor layer transition processes, improving production assembly convenience and product consistency.

[0067] In other embodiments, within the same cylindrical segment 21, the orthographic projection of one support member 30 onto the reference plane P partially overlaps with the orthographic projection of another support member 30 onto the reference plane P. That is, the two support members 30 are not completely aligned in the circumferential direction Q, but there is still an overlapping area. This retains the advantages of symmetrical support, uniform stress, and reliable limiting provided by coaxial alignment, while also further avoiding the space for conductor layering and transition through local staggered arrangement, adapting to the winding requirements of different wire diameters and different numbers of layers. At the same time, while ensuring structural stability, the support points and support strength can be flexibly adjusted to avoid excessive concentration of support areas, optimize the heat dissipation gap and electric field distribution inside the winding, improve the adaptability and operational reliability of the winding under complex working conditions, and take into account both structural regularity and process flexibility.

[0068] Please see Figure 5 and Figure 7 In a support member 30, the dimension of the support member 30 in the axial direction Y decreases from the first end 35 to the second end 36.

[0069] Understandably, the distance between the first surface 31 and the second surface 32 at the first end 35 of the support member 30 is greater than the distance between the first surface 31 and the second surface 32 at the second end 36 of the support member 30. This creates a gently tapering structure in the support member 30, which can adapt to the wiring profile of the winding 100 end and the transition section 23, resulting in a more natural fit with the conductor. Simultaneously, it avoids the winding space required for conductor layering and skipping turns, making the wiring arrangement smoother and more orderly. This gradient structure also achieves a smooth transition of force, dispersing mechanical and electromagnetic stresses, avoiding localized stress concentrations, and improving the vibration resistance stability of the winding 100 structure. Furthermore, this gradient structure reduces the volume occupied by the support member 30, improves space utilization, and provides assembly guidance, facilitating directional alignment and simplifying the assembly process.

[0070] In one example, the first surface 31 and the second surface 32 are spaced apart at the first end 35 of the support member 30, and are connected to each other at the second end 36 of the support member 30. In other words, along the circumferential direction Q of the winding 100, the dimension of the support member 30 in the axial direction Y gradually decreases from the first end 35 to the second end 36. With this arrangement, the first surface 31 and the second surface 32 of the support member 30 smoothly transition at the second end 36 without any abrupt edges, which can avoid scratching and damaging the support member 30 of the winding 100, improve the local electric field distribution, regulate the internal spatial boundary of the winding 100, stably maintain interlayer insulation and heat dissipation gaps, and improve structural stability, insulation reliability and heat dissipation effect.

[0071] Please see Figures 5 to 7 The support member 30 has a first side 33 and a second side 34 arranged opposite each other in the radial X direction. The first side 33 connects the first surface 31 and the second surface 32 in the axial Y direction. The second side 34 connects the first surface 31 and the second surface 32 in the axial Y direction. The first side 33 and the second side 34 are connected by a transition surface 37, which is located at the first end 35 of the support member 30 and contacts the first line layer 11 or the second line layer 211.

[0072] It is understood that both the first side surface 33 and the second side surface 34 are connected to the first surface 31 and the second surface 32 along the axial direction Y, and the first side surface 33 and the second side surface 34 are connected by a transition surface 37 located at the first end 35 of the support member 30. This transition surface 37 is in contact with the first wire layer 11 or the second wire layer 211. The transition surface 37 of the support member 30 can adapt to the wiring contour of the winding 100 layer rise and the transition section 23, playing a role in avoidance and shaping guidance, uniformly dispersing mechanical and electromagnetic stress, and improving the structural regularity, vibration resistance, and insulation reliability of the winding 100. In addition, the transition surface 37 is in close contact with the corresponding wire layer, which can realize end positioning and close support, and form a multi-dimensional limiting constraint with each side and end face of the support member 30, effectively suppressing the axial Y, radial X, and circumferential Q displacement deformation of the conductor.

[0073] Please see Figure 10 and Figure 11 The transition surface 37 can be either a planar structure or a stepped structure, allowing for flexible selection based on the contour, interlayer spacing, and wiring configuration of the winding 100 layers (first layer 11 or second layer 211). This adapts to different wire diameters and multi-layered winding 100 applications, offering strong structural versatility. The planar structure provides a smooth and uniform contact surface, ensuring stable contact with the layers and dispersing stress to prevent localized compression damage to the insulation. The stepped structure can accommodate the staggered layering and stepped interlayer layout of the winding 100, achieving graded contact and precise positioning, and is compatible with the irregular wiring contour of the transition section 23. Both the planar and stepped structures are regularly shaped, easy to process and mold into a single piece, and convenient for assembly and alignment. They effectively maintain the insulation gap between layers, regulate the electric field distribution at the ends, and reduce the risk of partial discharge. While providing support and positioning, they also consider manufacturability and insulation reliability.

[0074] Figure 10 In the embodiment shown, the support member 30 is an integral structure, which reduces costs. Figure 11 In the embodiment shown, the support 30 is a split structure, for example, assembled from stacked standard pieces, which can adapt to different cost and processing requirements. Figure 10 The first end 35 of the support member 30 shown is an acute-angled triangular structure, which leads to difficulties in processing. Therefore, the triangular structure can be replaced with a similar one. Figure 11 The trapezoidal structure in the middle helps to reduce the difficulty of processing.

[0075] Furthermore, the support member 30 is not limited to the above-mentioned structural form. Any geometric transition block with the functions of skip-turn guidance and skip-layer guidance can meet the usage requirements. This application does not make specific limitations on this.

[0076] It should be noted that, in this context, "skipping turns" refers to the wiring method in which, when winding 100, the conductors within the same layer in the axial direction Y skip over the adjacent turn and directly wind to the next turn.

[0077] In this context, "skipping layers / ascending layers" refers to the process of smoothly transitioning from the outer / inner side of the current layer to the next layer to continue winding when the conductor has completed the current layer in the axial Y direction during winding 100.

[0078] The material of the support member 30 can be an insulating material, and the appropriate heat resistance, pressure resistance and wear resistance can be selected according to the voltage level and working environment of the winding 100.

[0079] Please see Figure 3 , Figures 8 to 9 ,exist Figure 3, Figures 8 to 9 In the illustrated embodiment, two inner support members 30 are provided in the inner layer structure of the winding 100. These two inner support members 30 are arranged opposite each other, that is, their first ends 35 are close together and spaced apart. One inner support member 30 is located at the transition (or skip turn) position between the second turn 2 and the third turn 3 of the conductor. This support member 30 provides guidance for the transition from the second turn 2 to the third turn 3, preventing deviation or collapse during winding. It also provides a layer transition between the second turn 2 and the first turn 1 in the disc segment 10. The other inner support member 30 is located at the transition position between the third turn 3 and the fourth turn 4 of the conductor. This support member 30 provides guidance for the transition from the third turn 3 to the fourth turn 4, preventing deviation or collapse during winding. It also provides a layer transition between the third turn 3 and the sixth turn 6 in the cylindrical segment 20.

[0080] Similarly, two outer support members 30 are provided in the outer structure of the winding 100. These two outer support members 30 are arranged opposite each other, that is, their first ends 35 are close together and spaced apart. One outer support member 30 is located at the transition position between the fourth turn 4 and the fifth turn 5 of the conductor. This support member 30 provides guidance for the transition from the fourth turn 4 to the fifth turn 5, preventing deviation or collapse during the winding process. The other outer support member 30 is located at the transition position between the fifth turn 5 and the sixth turn 6 of the conductor. This support member 30 provides guidance for the transition from the fifth turn 5 to the sixth turn 6, preventing deviation or collapse during the winding process.

[0081] Please see Figures 12 to 15 ,exist Figures 12 to 15 In the embodiment shown, the winding 100 is continuously wound from a single wire, forming nine interconnected turns after winding. This ensures the continuity and integrity of the conductive path of the winding 100, reduces the number of lead wire joints, lowers contact loss and connection risks under high-frequency operating conditions, and improves the electrical reliability of the winding 100.

[0082] The winding 100 forms a three-layer structure in the radial direction X and a three-layer arrangement in the axial direction Y. The second turn 2 and the first turn 1 are located sequentially on the outer periphery of the third turn 3, and all three are arranged in the same layer in the radial direction X, together forming the disc-shaped segment 10 of the winding 100. The fourth turn 4 and the fifth turn 5 are located on the same side of the third turn 3, and the third turn 3, fourth turn 4, and fifth turn 5 are arranged alternately along the axial direction Y and in the same layer. The sixth turn 6 and the seventh turn are located on the same side of the second turn 2, and the second turn 2, seventh turn, and sixth turn 6 are arranged alternately along the axial direction Y and in the same layer. The eighth turn and the ninth turn are located on the same side of the first turn 1, and the first turn 1, eighth turn, and ninth turn are arranged alternately along the axial direction Y and in the same layer. The fourth turn 4, fifth turn 5, sixth turn 6, seventh turn, eighth turn, and ninth turn together form the cylindrical segment 20 of the winding 100. In this embodiment, the first turn 1, the eighth turn, and the ninth turn together form the outer layer structure of the winding 100; the second turn 2, the seventh turn, and the sixth turn 6 together form the middle layer structure of the winding 100; and the third turn 3, the fourth turn 4, and the fifth turn 5 together form the inner layer structure of the winding 100. Figure 12 The arrow connecting to the first turn 1 is the first connection end 12, and the arrow connecting to the ninth turn is the second connection end 22.

[0083] During winding, firstly, the third turn 3 of the disc segment 10 is wound to form the inner layer structure of the disc segment 10. Then, the second turn 2 is wound around the outer periphery of the third turn 3 to form the middle layer structure of the disc segment 10. Next, the first turn 1 is wound around the second turn 2 to form the outer layer structure of the disc segment 10. Subsequently, on the axial Y side of the third turn 3, the fourth turn 4 and the fifth turn 5, which are approximately coaxial with the third turn 3, are wound sequentially to form the inner layer structure of the cylindrical segment 20. Then, on the outer periphery of the inner layer structure of the cylindrical segment 20, the sixth turn 6 and the seventh turn, which are approximately coaxial with the second turn 2, are wound sequentially to form the middle layer structure of the cylindrical segment 20. Finally, on the outer periphery of the middle layer structure of the cylindrical segment 20, the eighth turn and the ninth turn, which are approximately coaxial with the first turn 1, are wound sequentially to form the outer layer structure of the cylindrical segment 20. The embodiments of this application include, but are not limited to, the above winding methods, which will not be described in detail here.

[0084] Please see Figures 13 to 15 , Figure 13 The inner structure of winding 100 is shown in the diagram. Figure 14 The diagram illustrates the intermediate layer structure of winding 100. Figure 15The outer layer structure of the winding 100 is illustrated, wherein the winding 100 has a second boundary line b and a third boundary line c. In the inner layer structure, two inner support members 30 are located above the second boundary line b, such that the orthographic projections of the two inner support members 30 on a reference plane P perpendicular to the axial direction Y at least partially overlap. In the intermediate layer structure, two intermediate support members 30 are located between the second boundary line b and the third boundary line c, such that the orthographic projections of the two intermediate support members 30 on a reference plane P perpendicular to the axial direction Y at least partially overlap. In the outer layer structure, two outer support members 30 are located below the second boundary line b, such that the orthographic projections of the two outer support members 30 on a reference plane P perpendicular to the axial direction Y at least partially overlap.

[0085] exist Figures 13 to 15 In the embodiment shown, the orthographic projections of the inner support 30, the middle support 30, and the outer support 30 onto the reference plane P perpendicular to the axial direction Y do not overlap. This ensures that the inner support 30, the middle support 30, and the outer support 30 do not overlap in the axial direction Y, reducing the risk of sudden changes in local dimensions and local radial thickening of the winding 100.

[0086] In other embodiments, the intermediate layer structure of the winding 100 can be multi-layered, and the specific structure will not be described in detail here. The second connection end 22 of the multi-layered winding 100 is connected to the last turn of the winding 100.

[0087] It should be noted that "first connection terminal 12" in the context can be used as the input terminal of winding 100, and "second connection terminal 22" can be used as the output terminal of winding 100.

[0088] Please see Figure 16 This application also provides a transformer, which includes a magnetic core and a plurality of windings 100 as described in any of the preceding embodiments. The magnetic core includes a core post 200, and the plurality of windings 100 are all sleeved on the outer periphery of the core post 200. In this way, the transformer has a compact and reasonable layout, which can effectively reduce the overall volume and meet the requirements of miniaturized assembly; at the same time, the windings 100 are arranged around the core post 200, resulting in tight magnetic coupling, low leakage magnetic loss, and effectively improving electromagnetic conversion efficiency. The external covering structure of the windings 100 increases the contact area with air, providing good heat dissipation and effectively reducing the operating temperature rise; and the overall assembly method is simple and regular, facilitating winding positioning and batch assembly. In addition, the symmetrical surrounding layout makes the electromagnetic distribution uniform, reducing electromagnetic interference, and the windings 100 are reliably limited by the outer periphery of the core post 200, resulting in a stable overall structure and high operational reliability.

[0089] In the description of this application, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0090] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0091] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0092] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A winding, characterized in that, The winding includes a disc-shaped section and a cylindrical section connected along the axial direction; The disc-shaped segment includes multiple turns of the first thread layer, which are concentrically wound radially from the outside to the inside, and the outermost turn of the first thread layer is provided with a first connecting end; The cylindrical segment includes multiple cylindrical sub-segments, which are arranged radially and connected to each other. Each cylindrical sub-segment includes multiple second line layers arranged axially, and the outermost second line layer is provided with a second connecting end. The innermost first line layer and the innermost cylindrical sub-segment are connected.

2. The winding according to claim 1, characterized in that, The multiple cylindrical segments are connected sequentially to form an S-shaped trace.

3. The winding according to claim 2, characterized in that, Each of the cylindrical segments has transition sections at both ends in the axial direction; The winding also includes a support member, and one support member is provided for each transition section; The support member contacts the transition section of the cylindrical sub-segment in the axial direction and is radially bonded to the adjacent first or second line layer.

4. The winding according to claim 3, characterized in that, The support member has a first surface and a second surface that are opposite to each other in the axial direction; When the support member is located in the innermost cylindrical segment and near one end of the disc segment, The first surface is axially fitted with the transition section, and the second surface is flush with the axially aligned surface of the outermost first line layer. When the support member is located in the innermost cylindrical segment and away from the disc segment, The first surface is axially fitted with the transition section, and the second surface is flush with one side end face of the corresponding cylindrical sub-segment in the axial direction.

5. The winding according to claim 4, characterized in that, The support member has a first side and a second side that are opposite each other in the radial direction. In the innermost cylindrical sub-segment... The first side surface of one of the support members is co-conformally disposed with the inner surface of the innermost first line layer in the radial direction, and the second side surface is co-conformally disposed with the outer surface of the innermost first line layer in the radial direction. The first side of the other support member is co-conformally disposed with the inner surface of the second line layer of the innermost cylindrical sub-segment and away from the end of the disc segment, and the second side is co-conformally disposed with the outer surface of the second line layer of the innermost cylindrical sub-segment and away from the end of the disc segment.

6. The winding according to claim 5, characterized in that, In the outermost cylindrical sub-segment described above The first side of one of the support members is co-conformally disposed with the inner surface of the second line layer of the outermost cylindrical sub-segment and near one end of the disc segment, and the second side is co-conformally disposed with the outer surface of the second line layer of the outermost cylindrical sub-segment and near one end of the disc segment. The first side of the other support member is co-conformally disposed with the inner surface of the second line layer of the outermost cylindrical sub-segment and away from the end of the disc segment, and the second side is co-conformally disposed with the outer surface of the second line layer of the outermost cylindrical sub-segment and away from the end of the disc segment.

7. The winding according to claim 6, characterized in that, In the cylindrical segment located between the innermost and outermost cylindrical segments, one support member is axially located between the first and second line layers and radially abuts against two adjacent second line layers, and the other support member is axially located at the end of the cylindrical segment away from the first line layer and radially abuts against two adjacent second line layers.

8. The winding according to any one of claims 3 to 7, characterized in that, The winding has a reference plane perpendicular to the axial direction. In a cylindrical segment, the orthographic projection of the support member on the reference plane on any one cylindrical sub-segment does not overlap with the orthographic projection of the support member on the reference plane on another cylindrical sub-segment.

9. The winding according to any one of claims 4 to 7, characterized in that, The support member has a first end and a second end disposed opposite to each other, wherein the size of the first end is larger than the size of the second end; In the same cylindrical segment, the first end of one support member is disposed on the same side as the second end of another support member.

10. The winding according to claim 9, characterized in that, The winding has a reference plane perpendicular to the axial direction. In the same cylindrical segment, the orthographic projection of one support member onto the reference plane at least partially coincides with the orthographic projection of the other support member onto the reference plane.

11. The winding according to claim 9, characterized in that, In one of the support members, the axial dimension of the support member decreases from the first end to the second end.

12. The winding according to claim 11, characterized in that, The support member has a first side and a second side that are arranged opposite each other in the radial direction. The first side connects the first surface and the second surface in the axial direction, and the second side connects the first surface and the second surface in the axial direction. The first side and the second side are connected by a transition surface, wherein the transition surface is located at the first end of the support member and contacts the first line layer or the second line layer.

13. The winding according to claim 12, characterized in that, The transition surface is a planar structure or a stepped structure.

14. A transformer, characterized by include: A magnetic core, the magnetic core comprising a core post; and The windings according to any one of claims 1 to 13, wherein each of the windings is sleeved on the outer periphery of the core post.

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