A stator end plate and a stator assembly

Abstract

The utility model discloses a kind of stator end plate, belong to motor field, solve the problem that stator end plate is lacking in effective positioning to enameled wire in prior art, the technical scheme solving this problem includes body and the plurality of end cap tooth parts of circumferential interval setting in body, still be equipped with the limiting post located in the radial direction of the body outside end cap tooth part, the limiting post is protruding on the body and its inboard surface is equipped with the limiting buckle formed by extending inwards. The utility model plays effective limiting to enameled wire, reduces the condition of loosening and broken line. Another purpose of the utility model is to disclose a kind of stator assembly, including stator core, coil winding and the stator end plate described in any of the above technical solutions, so that the structure of stator assembly is more compact and reduces the condition of enameled wire loosening and broken line.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a stator end plate and stator assembly. Background Technology

[0002] In the manufacturing process of brushless motors, the winding process is a crucial step, as its quality directly affects key indicators such as the motor's electromagnetic performance, temperature rise, and noise level. To achieve a neater coil winding arrangement, existing technologies, such as the invention patent CN118508646A, disclose setting limiting posts on the stator end plate and directing the enameled wire crossing between the terminals to run along the outside of the limiting posts. However, the enameled wire located outside the limiting posts is prone to collision and friction with the motor housing during motor operation, leading to faults such as breakage and insulation damage. This also increases the space occupied by the motor. Furthermore, the surface of the limiting posts is relatively flat and lacks an effective limiting structure for the enameled wire. When the brushless motor vibrates significantly, the enameled wire slips and swings due to the vibration. The swinging enameled wire repeatedly bends at the limiting posts, and after prolonged operation, there is a risk of wire breakage. Utility Model Content

[0003] The purpose of this invention is to provide a stator end plate that solves the problem of insufficient positioning of enameled wires in the existing stator end plate, effectively limiting the enameled wires and reducing the occurrence of loosening and breakage.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a stator end plate, comprising a body and a plurality of end cover teeth circumferentially spaced on the body, and a limiting post located outside the end cover teeth along the radial direction of the body, the limiting post being protruding on the body and having an inwardly extending limiting buckle on its inner side.

[0005] After adopting the above technical solution, this utility model has the following advantages: The limiting post located on the outer side of the end cover teeth provides a clear boundary and guidance for the arrangement of the enameled wire of the stator winding. The limiting post has a limiting buckle on its inner side. The limiting buckle on the inner side of the limiting post works together with the limiting post to constrain the enameled wire from multiple directions. This can more effectively fix the position of the enameled wire and minimize its slippage or swinging due to vibration during motor operation, thereby reducing the risk of wire breakage caused by repeated bending. It can also minimize its direct contact with the motor housing, reducing the risk of enameled wire damage and breakage caused by collision and friction, and improving the safety and stability of motor operation. Finally, since the enameled wire can be routed more orderly along the limiting buckle on the inner side of the limiting post, compared with the case of the enameled wire being routed randomly on the outer side of the limiting post in the prior art, the internal space of the motor can be utilized more rationally, the structure is more compact, and the space occupied by the motor is reduced.

[0006] Furthermore, the limiting buckle is located in the area above the middle of the limiting post, and the limiting buckle and the limiting post located below the limiting buckle together form a wiring area.

[0007] By adopting the aforementioned technical solution, the limiting buckle is positioned above the middle of the limiting post, leaving more space below the limiting buckle for the enameled wire to run. During enameled wire installation, this open limiting buckle structure allows the wire to be easily inserted, making the operation convenient and quick, and improving installation efficiency. In subsequent maintenance, if inspection or replacement of the enameled wire is required, it can be easily removed from the limiting buckle or reinstalled, reducing maintenance difficulty.

[0008] Furthermore, the inner side of the limiting post is provided with an avoidance groove in the area below the limiting buckle.

[0009] Through the above technical solution, when the enameled wire is subjected to external force (such as vibration during motor operation, tension during winding, etc.), the enameled wire will be tightly pressed against the inner side of the limiting post, bearing a large compressive force and rigid compression with the limiting post. By setting the avoidance groove, the enameled wire has a certain amount of room to move. When external force is applied, the enameled wire can have slight displacement and deformation within the avoidance groove, avoiding rigid compression with the limiting post. This can effectively reduce friction between the enameled wire and the limiting post, reduce insulation wear caused by friction, and thus avoid faults such as wire damage and short circuits. The design of the avoidance groove can also provide an effective heat dissipation path without increasing the space occupation.

[0010] Furthermore, the included angle between the limiting buckle and the limiting post is α, where 0 < α ≤ 90°.

[0011] By using the above technical solution and setting an appropriate angle, the enameled wire can be more effectively constrained. If α is greater than 90°, the upward blocking effect of the limiting buckle on the enameled wire is greatly reduced. When the enameled wire is subjected to external force (such as vibration), it is easy for the enameled wire to come out of the limiting buckle upward.

[0012] Furthermore, a groove is formed between two adjacent end cap teeth, and the number of the limiting buckle and the groove and / or the end cap teeth is the same.

[0013] The above technical solution enables each wire groove and / or winding tooth to correspond to a limiting buckle, so that the enameled wire drawn from each wire groove and / or winding tooth can be limited during the winding process.

[0014] Furthermore, the main body is also circumferentially spaced with a plurality of terminal block bases for mounting terminal blocks, each terminal block base being located between two adjacent limiting posts, and the outer side of the terminal block base is provided with a limiting groove.

[0015] By using the above technical solution, the terminal block base is placed between two adjacent limiting posts, which can make full use of the circumferential space of the body and make the overall structure more compact. This layout avoids interference between the terminal block base and other components as much as possible, and also provides a reasonable installation position for the terminal block. Each terminal block base has a limiting groove on its outer side, which can provide additional support and guidance for the bridge wire or other connecting wires.

[0016] Furthermore, with the central axis of the stator end plate as the center point, the distance from the inner side surface to the center point is less than the distance from the midpoint of the line connecting the outer sides of two adjacent limiting grooves to the center point.

[0017] Through the above technical solution, the inner side of the limiting post is designed to be closer to the center of the circle, so that it and the limiting groove together form an efficient multi-point fixation. The inner side of the limiting post applies a greater constraint force when the coil winding passes through, and more tightly clamps the coil winding, thereby preventing the coil winding from loosening and detaching due to external interference as effectively as possible.

[0018] This utility model discloses a stator assembly, including a stator core, a coil winding, and a stator end plate as described in any of the above technical solutions. The stator end plate is disposed at the end of the stator core. The stator core has winding teeth corresponding to the teeth on the end cover. The terminal base is equipped with terminals. The terminals and limiting posts are arranged alternately along the circumference of the stator core. The coil winding includes a winding coil and multiple sets of lead coils, and the winding coil and lead coils are composed of the same enameled wire. The winding coils are sequentially welded to the terminals and wound around adjacent winding teeth along the circumference of the stator core. Each set of lead coils is welded to two terminals symmetrically aligned with the axis of the stator core along the circumference of the stator core. The bridging wire between the two terminals of each set of lead coils runs from the limiting buckle of the limiting post. Adjacent lead coils are bridged by adjacent terminals and run from the outside of the limiting post. The bridging wire located outside the limiting post is disconnected.

[0019] Through the above technical solution, the winding coil is sequentially welded to the terminals along the circumference of the stator core, and the lead coil is also welded to the corresponding terminals, further ensuring the stability and reliability of the electrical connection. The bridging wire between two terminals symmetrically located on the axis of the stator core runs through the limit buckle of the limit post, which can effectively fix the position of the bridging wire and prevent it from shifting due to vibration during motor operation. The limit buckle is located on the inner side of the limit post, allowing the bridging wire to run along the inner side of the limit post, which can also make more reasonable use of the internal space of the motor, making the structure more compact and reducing the space occupied by the motor. Finally, the bridging wire located on the outer side of the limit post is disconnected, reducing the number of lead wire ends and further making the structure more compact. This also means that each winding part can be disassembled and replaced independently without removing the entire winding, greatly simplifying the maintenance process.

[0020] Furthermore, each of the lead-out rings has a bridging line running from the limiting groove between two adjacent limiting posts.

[0021] Through the above technical solution, the limiting groove can firmly restrict the bridge line within the groove, effectively resisting the influence of external forces and preventing the bridge line from shaking or shifting. It can also provide a clearer and more fixed path for the bridge line, further facilitating the winding process.

[0022] Furthermore, adjacent lead-out loops are bridged by adjacent terminals and run from the outside of the high-height limiting post.

[0023] Through the above technical solution, the high-height limiting post means that it can provide stronger support and better guidance for the bridge line, better adapt to the winding machine, and make the winding process smoother. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the stator end plate in Embodiment 1 of this utility model;

[0026] Figure 2 This is a structural schematic diagram of the stator end plate from another perspective in Embodiment 1 of this utility model;

[0027] Figure 3 This is a cross-sectional view of the stator end plate in Embodiment 1 of this utility model;

[0028] Figure 4 This is a schematic diagram of the stator assembly in Embodiment 2 of this utility model;

[0029] Figure 5 This is a schematic diagram of the stator assembly from another perspective in Embodiment 2 of this utility model;

[0030] Figure 6 This is a structural schematic diagram of the stator assembly from another perspective in Embodiment 2 of this utility model;

[0031] Figure 7 This is an indicator diagram showing the location where the lead-out loop needs to be cut in Embodiment 2 of this utility model;

[0032] Figure 8 This is a schematic diagram of the lead-out loop in Embodiment 2 of this utility model;

[0033] Figure 9 This is a schematic diagram of the winding of the coil in Embodiment 2 of this utility model;

[0034] In the diagram, 1. Stator end plate; 11. Body; 12. End cover teeth; 13. Limiting post; 131. First limiting post; 132. Second limiting post; 133. Third limiting post; 134. Fourth limiting post; 135. Fifth limiting post; 136. Sixth limiting post; 1301. Low limiting post; 1302. High limiting post; 137. Inner side; 138. Limiting buckle; 139. Clearance groove; 14. Wire groove; 15. Terminal block base; 151. Limiting groove;

[0035] 2. Stator core; 20. Winding tooth; 21. First winding tooth; 22. Second winding tooth; 23. Third winding tooth; 24. Fourth winding tooth; 25. Fifth winding tooth; 26. Sixth winding tooth;

[0036] 30. Terminal block; 31. First terminal block; 32. Second terminal block; 33. Third terminal block; 34. Fourth terminal block; 35. Fifth terminal block; 36. Sixth terminal block;

[0037] 40. Winding the coil; 41. Leading out the coil. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0039] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein.

[0040] It should be understood that in the various embodiments of this utility model, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this utility model.

[0041] It should be understood that in this invention, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product or device.

[0042] It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0043] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0044] Example 1:

[0045] like Figures 1 to 3 As shown, this utility model provides a stator end plate, including a body 11 and a plurality of end cap teeth 12 circumferentially spaced on the body 11. A limiting post 13 located outside the end cap teeth 12 is also provided along the radial direction of the body 11. The limiting post 13 is protruding on the body 11 and its inner side 137 is provided with a limiting buckle 138 extending inward.

[0046] The limiting post 13 located on the outer side of the end cover tooth 12 provides a clear boundary and guide for the arrangement of the enameled wire of the stator winding. The inner side 137 of the limiting post 13 is provided with a limiting buckle 138. The limiting buckle 138 on the inner side 137 of the limiting post 13 works together with the limiting post 13 to constrain the enameled wire from multiple directions. This can more effectively fix the position of the enameled wire and minimize its slippage or swinging due to vibration during motor operation, thereby reducing the risk of wire breakage caused by repeated bending. It can also minimize its direct contact with the motor housing, reducing the risk of enameled wire damage and breakage caused by collision and friction, and improving the safety and stability of motor operation. Finally, since the enameled wire can be routed more orderly along the limiting buckle 138 on the inner side 137 of the limiting post 13, compared with the situation in the prior art where the enameled wire is routed randomly on the outer side of the limiting post 13, the internal space of the motor can be utilized more rationally, the structure is more compact, and the space occupied by the motor is reduced.

[0047] A groove 14 is formed between two adjacent end cap teeth 12. In order to limit the enameled wire drawn from each groove 14 or winding tooth 20, the number of limiting buckles 138, grooves 14 and end cap teeth 12 are the same in this application.

[0048] Specifically, the limiting clip 138 is located in the area above the middle of the limiting post 13. The limiting clip 138 and the limiting post 13 located below the limiting clip 138 together form the wiring area. There is more space below the limiting clip 138 for the enameled wire to run. When installing the enameled wire, this open structure of the limiting clip 138 allows the enameled wire to be easily inserted, making the operation convenient and quick, and improving installation efficiency. During subsequent maintenance, if it is necessary to inspect or replace the enameled wire, it can also be easily removed from the limiting clip 138 or reinstalled, reducing maintenance difficulty.

[0049] It should be noted that in this embodiment, the limiting buckle 138 is a barb that limits the enameled wire from multiple directions, effectively preventing the enameled wire from sliding or shifting due to vibration or other external forces during motor operation.

[0050] In this embodiment, the included angle between the limiting buckle 138 and the limiting post 13 is α. If α is greater than 90°, the upward blocking effect of the limiting buckle 138 on the enameled wire is significantly weakened, and the enameled wire is prone to detaching from the limiting buckle 138 when subjected to external forces (such as vibration). Therefore, in this application, 0 < α ≤ 90°, and by setting an appropriate angle, a more effective constraint is exerted on the enameled wire. In this embodiment, α is 90°, and a right-angle structure is formed between the limiting buckle 138 and the limiting post 13, making the constraint of the limiting buckle 138 on the enameled wire more balanced in both the horizontal and vertical directions.

[0051] It should be noted that in this application, the limiting post 13 extends along the axial direction of the body 11, that is, the included angle between the limiting buckle 138 and the axis of the body 11 is also α.

[0052] Since the enameled wire may need to be wound multiple times, in this application, the limiting buckle 138 is located in the area above the middle of the limiting post 13. When the enameled wire is embedded in the limiting buckle 138, there is more space below for the enameled wire to run, which can also make the enameled wire run more smoothly and naturally below the limiting post 13, and reduce the stress concentration caused by excessive bending of the enameled wire at the limiting post 13.

[0053] Different enameled wires at different locations have different routing requirements at the limiting post 13. For example, some enameled wires need to be routed from a higher position. Therefore, the limiting post 13 includes at least two heights of limiting post 13. The height of the limiting buckle 138 in the limiting post 13 of different heights is the same. In this embodiment, it includes a high-height limiting post 13 and a low-height limiting post 13, namely a high limiting post 1302 and a low limiting post 1301. The high-height limiting post 13 and the low-height limiting post 13 are arranged sequentially along the circumference of the body 11. The limiting buckle 138 is located in the area above the middle of the high-height limiting post 13 and the top of the low-height limiting post 13. When winding the winding, the worker can place the winding in the limiting buckle 138 according to the same height standard, which facilitates the routing of the enameled wire and the passage of the winding machine, so that the winding height of the winding is consistent at different positions, which is conducive to achieving a neat and standardized winding layout and reducing the winding difficulty.

[0054] It should be noted that the high-height limit post 13 and the low-height limit post 13 are only for easy distinction between the two types of limit posts 13. The high-height limit post 13 is higher than the low-height limit post 13.

[0055] When the enameled wire is subjected to external force (such as vibration during motor operation or tension during winding), the enameled wire will be tightly pressed against the inner surface 137 of the limiting post 13, bearing a large compressive force and rigid compression between it and the limiting post 13. To address this, in this application, the inner surface 137 of the limiting post 13 is provided with an avoidance groove 139 in the area below the limiting buckle 138. This provides the enameled wire with a certain amount of room to move. When external force is applied, the enameled wire can have slight displacement and deformation within the avoidance groove 139, avoiding rigid compression between it and the limiting post 13. This effectively reduces friction between the enameled wire and the limiting post 13, reducing insulation wear caused by friction, thereby preventing faults such as wire damage and short circuits. The design of the avoidance groove 139 also provides an effective heat dissipation path without increasing additional space occupation.

[0056] Furthermore, the circumference of the main body 11 is also spaced by multiple terminal block bases 15 for mounting the terminal blocks 30. Each terminal block base 15 is located between two adjacent limit posts 13, which can make full use of the circumferential space of the main body 11 and make the overall structure more compact. This layout avoids interference between the terminal block bases 15 and other components as much as possible, and also provides a reasonable installation position for the terminal blocks 30. Secondly, the outer side of the terminal block base 15 is provided with a limit groove 151, which can provide additional support and guidance for the bridge wire or other connecting wires.

[0057] It should be noted that the terminal block base 15 has a mounting groove that opens along the axial direction of the body 11, and the terminal block 30 can be inserted into the mounting groove through a snap-fit ​​structure or a clearance fit.

[0058] Furthermore, with the central axis of the stator end plate 1 as the center point, the distance from the inner surface 137 to the center point is less than the distance from the midpoint of the line connecting the outer surfaces of two adjacent limiting slots 151 to the center point. This allows it to form an efficient multi-point fixation together with the limiting slots 151. The inner surface 137 of the limiting post 13 applies a greater constraint force when the coil winding passes through, more tightly clamping the coil winding, thereby effectively preventing the coil winding from loosening and detaching due to external interference.

[0059] Understandably, in other embodiments, grooves can also be made on the inner side of the limiting post to form a limiting buckle, providing a dedicated limiting space for enameled wires, etc., without adding too many external structures, which helps to achieve miniaturization and compact design of the stator structure.

[0060] Understandably, in other embodiments, the number of limiting clips is the same as the number of wire slots. This ensures that the enameled wire leading from each wire slot can be limited.

[0061] Understandably, in other embodiments, the number of limiting latches and end cap teeth is the same. This ensures that the enameled wire leading from each winding tooth can be limited.

[0062] Example 2:

[0063] like Figures 4 to 9As shown, this embodiment discloses a stator assembly, including a stator core 2, a coil winding, and a stator end plate 1 according to any of the above technical solutions. The stator end plate 1 is located at the end of the stator core 2. The stator core 2 is provided with winding teeth 20 corresponding to the end cover teeth 12. A terminal base 15 is equipped with terminals 30. The terminals 30 and the limiting post 13 are arranged alternately along the circumference of the stator core 2. The coil winding includes a winding coil 40 and multiple sets of lead coils 41. The winding coil 40 and the lead coils 41 are composed of the same enameled wire. The coil 40 is sequentially welded to the terminal 30 and wound around the adjacent winding teeth 20 along the circumferential direction of the stator core 2. Each set of lead coils 41 is welded to two terminals 30 symmetrically along the axis of the stator core 2 along the circumferential direction of the stator core 2. The bridging wire between the two terminals 30 of each set of lead coils 41 runs from the limiting buckle 138 of the limiting post 13. Two adjacent lead coils 41 are bridged by adjacent terminals 30 and run from the outside of the limiting post 13. The bridging wire located on the outside of the limiting post 13 is disconnected.

[0064] The winding coil 40 is sequentially welded to the terminal 30 along the circumference of the stator core 2, and the lead coil 41 is also welded to the corresponding terminal 30, further ensuring the stability and reliability of the electrical connection. The lead coil 41 is located between two symmetrical terminals 30 on the axis of the stator core 2. The bridging wire runs through the limit buckle 138 of the limit post 13, which can effectively fix the position of the bridging wire and prevent it from shifting due to vibration during motor operation. The limit buckle 138 is located inside the limit post 13, allowing the bridging wire to run along the inside of the limit post 13. This also makes better use of the internal space of the motor, resulting in a more compact structure and reducing the space occupied by the motor. Finally, the bridging wire located outside the limit post 13 is disconnected, reducing the number of lead wire ends and further making the structure more compact. This also means that each winding part can be disassembled and replaced independently without removing the entire winding, greatly simplifying the maintenance process.

[0065] Furthermore, the bridging wire of each lead-out loop 41 located between two adjacent limiting posts 13 runs through the limiting groove 151. The limiting groove 151 can firmly restrict the bridging wire within the groove, effectively resisting the influence of external forces and preventing the bridging wire from shaking or shifting. It can also provide a clearer and more fixed path for the bridging wire, further facilitating winding.

[0066] To facilitate winding, adjacent lead-out coils 41 are bridged by adjacent terminals 30 and run from the outside of the high-height limiting post 13. The high-height limiting post 13 means it can provide stronger support and better guidance for the bridge wire, better adapting to the winding machine and making the winding process smoother. The bridge wire between the two symmetrical terminals 30 on the axis of the stator core 2 of each lead-out coil 41 runs from the limiting buckle 138 of the low-height second limiting post 132, serving a limiting function.

[0067] Specifically, the terminal block 30 is located radially outside the winding teeth 20 of the stator core 2. The stator core 2 has 6 winding teeth 20 and 6 terminal blocks 30. The stator end plate 1 has 6 limiting posts 13 and 6 end cap teeth 12. When the stator end plate 1 is mounted on the stator core 2, the 6 end cap teeth 12 are respectively matched with the 6 winding teeth 20. Since the coil winding needs to pass through both the end cap teeth 12 and the winding teeth 20 simultaneously during winding, to make the winding method explanation more concise, the following winding description only uses the winding teeth 20 as an example. The 6 winding teeth 20 and 6 terminal blocks 30 are arranged alternately along the circumference of the stator core 2. The 6 limiting posts 13 are located outside the 6 winding teeth 20. The stator end plate 1 mentioned in this application is the front end cover located in front of the stator core 2. The six winding teeth 20, arranged clockwise around the stator core 2, include a first winding tooth 21, a second winding tooth 22, a third winding tooth 23, a fourth winding tooth 24, a fifth winding tooth 25, and a sixth winding tooth 26. The six terminals 30, arranged clockwise around the stator core 2, include a first terminal 31, a second terminal 32, a third terminal 33, a fourth terminal 34, a fifth terminal 35, and a sixth terminal 36. The six limiting posts 13, arranged clockwise around the stator core 2, include a first limiting post 131, a second limiting post 132, a third limiting post 133, a fourth limiting post 134, a fifth limiting post 135, and a sixth limiting post 136.

[0068] The winding coil 40 has 2 turns and the lead coil 41 has 3 turns. The winding steps of the winding coil 40 include S1: first hang the first terminal 31, wind the first winding tooth 21, return to the second terminal 32, hang the second terminal 32, wind the second winding tooth 22, and return to the third terminal 33.

[0069] S2: Hang the third terminal 33, wind the third winding tooth 23, return to the fourth terminal 34, hang the fourth terminal 34, wind the fourth winding tooth 24, return to the fifth terminal 35;

[0070] S3: Hang the fifth terminal 35, wind the fifth winding tooth 25, return to the sixth terminal 36, hang the sixth terminal 36, wind the sixth winding tooth 26.

[0071] Do not cut the 40mm coil; repeat the above steps once more.

[0072] Do not cut the wire between the winding coil 40 and the lead coil 41, and then proceed with winding the lead coil 41.

[0073] The winding steps of lead-out coil 41 include S4: hanging the first terminal 31, passing through the limiting buckle 138 inside the first limiting post 131, passing through the limiting groove 151 below the second terminal 32, passing through the limiting buckle 138 inside the second limiting post 132, passing through the limiting groove 151 below the third terminal 33, passing through the limiting buckle 138 inside the third limiting post 133, hanging the fourth terminal 34, and passing through the outer side of the fourth limiting post 134.

[0074] S5: Hang the fifth terminal 35, pass through the limit buckle 138 inside the fifth limit post 135, pass through the limit groove 151 below the sixth terminal 36, pass through the limit buckle 138 inside the sixth limit post 136, pass through the limit groove 151 below the first terminal 31, pass through the limit buckle 138 inside the first limit post 131, hang the second terminal 32, and pass along the outside of the second limit post 132.

[0075] S6: Hang the third terminal 33, pass through the limit buckle 138 inside the third limit post 133, pass through the limit groove 151 below the fourth terminal 34, pass through the limit buckle 138 inside the fourth limit post 134, pass through the limit groove 151 below the fifth terminal 35, pass through the limit buckle 138 inside the fifth limit post 135, hang the sixth terminal 36, and then the enameled wire end comes out;

[0076] S7: The enameled wires on the first terminal 31, second terminal 32, third terminal 33, fourth terminal 34, fifth terminal 35, and sixth terminal 36 are spliced. After splicing, the enameled wires spliced ​​between two adjacent terminals 30 and located outside the limiting post 13 are disconnected. Specifically, this means that the enameled wires at the second limiting post 132, fourth limiting post 134, and sixth limiting post 136 are disconnected, and the wire ends at the stator core 2 and stator core 2 are also removed. The removed enameled wires are indicated by dashed lines. If a part of the coil winding fails, the disconnection setting allows for easier location and individual replacement of the damaged wire segment without disassembling the entire coil winding, reducing maintenance costs and complexity. Double-layer coil windings do not require bridge wire shaping, making them easier to manufacture.

[0077] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A stator end plate, comprising a body (11) and a plurality of end cap teeth (12) circumferentially spaced on the body (11), characterized in that, A limiting post (13) located outside the end cap tooth (12) is also provided along the radial direction of the body (11). The limiting post (13) is protruding on the body (11) and its inner side (137) is provided with a limiting buckle (138) extending inward.

2. The stator end plate according to claim 1, characterized in that, The limiting buckle (138) is located in the area above the middle of the limiting post (13), and the limiting buckle (138) and the limiting post (13) located below the limiting buckle (138) together form a wiring area.

3. The stator end plate according to claim 2, characterized in that, The inner side (137) of the limiting post (13) is provided with an avoidance groove (139) in the area below the limiting buckle (138).

4. The stator end plate according to claim 1, characterized in that, The limiting post (13) extends along the axial direction of the body (11), and the included angle between the limiting buckle (138) and the limiting post (13) is α, where 0 < α ≤ 90°.

5. The stator end plate according to claim 1, characterized in that, A groove (14) is formed between two adjacent end cap teeth (12), and the number of the limiting buckle (138) and the groove (14) and / or the end cap teeth (12) are the same.

6. The stator end plate according to claim 1, characterized in that, The main body (11) is also circumferentially spaced with a plurality of terminal block bases (15) for mounting terminal blocks (30), each terminal block base (15) being located between two adjacent limit posts (13), and the outer side of the terminal block base (15) is provided with a limit groove (151).

7. The stator end plate according to claim 6, characterized in that, With the central axis of the stator end plate as the center point, the distance from the inner side surface (137) to the center point is less than the distance from the midpoint of the line connecting the outer sides of the two adjacent limiting grooves (151) to the center point.

8. A stator assembly, characterized in that, The stator includes a stator core (2), a coil winding, and a stator end plate (1) as described in any one of claims 6 or 7. The stator end plate (1) is located at the end of the stator core (2). The stator core (2) has winding teeth (20) corresponding to the end cover teeth (12). The terminal base (15) is equipped with terminals (30). The terminals (30) and the limiting post (13) are arranged alternately along the circumference of the stator core (2). The coil winding includes a winding coil (40) and multiple sets of lead coils (41). The winding coil (40) and the lead coils (41) are composed of the same enameled wire. 40) The lead coils (41) are sequentially welded to the terminals (30) and wound around the adjacent winding teeth (20) along the circumferential direction of the stator core (2). Each set of lead coils (41) is welded to two terminals (30) symmetrical about the axis of the stator core (2) along the circumferential direction of the stator core (2). The bridging wire between the two terminals (30) of each set of lead coils (41) runs from the limiting buckle (138) of the limiting post (13). The two adjacent lead coils (41) are bridged by the adjacent terminals (30) and run from the outside of the limiting post (13). The bridging wire located on the outside of the limiting post (13) is disconnected.

9. The stator assembly according to claim 8, characterized in that, Each of the lead-out loops (41) has a bridging line between two adjacent limit posts (13) that runs from the limit groove (151).

10. The stator assembly according to claim 8, characterized in that, The two adjacent lead rings (41) are bridged by adjacent terminals (30) and run from the outside of the high-height limiting post (13).

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