Stator and motor

Abstract

A stator provided by the present application comprises a stator core, an insulator and a winding, the stator core is arranged in an annular shape, the stator core comprises a stator yoke portion and a stator tooth portion, the stator yoke portion is located in the circumferential direction of the stator core, the stator tooth portion extends towards the center direction of the stator, the stator is provided with wire slots, the wire slots are located between adjacent stator tooth portions, and the winding is wound around the stator yoke portion. The winding wire is at least partially located in the wire slot, the insulating part covers at least part of the surface of the stator, the insulating part comprises a butt joint part, the butt joint part is at least partially located in the wire slot and located between the stator yoke part and the winding wire, and in the radial direction of the stator, the butt joint parts of adjacent insulating parts at least partially coincide. And the butt joint part at least partially shields the stator yoke part. The invention further provides a motor, the motor comprises the block iron core, the block iron core comprises the block yoke part and the block tooth part, and the butt joint part at least partially shields the block yoke part, so that the creepage distance is increased, the contact probability of the winding and the stator is reduced, and the phenomenon of poor voltage resistance is reduced.

Description

Technical Field

[0001] This application relates to the technical field of motors, and particularly to a stator and a motor. Background Art

[0002] The stator in the related art includes a stator core and an insulating skeleton. Two insulating skeletons are butted on both axial sides of the stator core. The insulating fasteners are formed by splicing segmented skeletons, and there is a gap between the spliced segmented skeletons. This gap will cause part of the stator yoke to be exposed. When the winding wire is wound around the stator, at least part of the winding of the winding wire is located in the slot formed between adjacent stator teeth, and the gap formed by the splicing of the aforementioned segmented skeletons is also located in the slot. Such a setting may cause the winding wire to contact the stator yoke through the gap, thereby resulting in the occurrence of poor withstand voltage phenomenon. Summary of the Invention

[0003] The purpose of this application is to provide a stator that reduces the phenomenon of poor withstand voltage.

[0004] This application provides a stator, including a stator core, an insulating member, and a winding wire. The stator core is arranged in a ring shape. The stator core includes a stator yoke and stator teeth. The stator yoke is located in the circumferential direction of the stator core, and the stator teeth extend towards the center direction of the stator. The stator has slots, and the slots are located between adjacent stator teeth. At least part of the winding wire is located in the slots. The insulating member covers at least part of the surface of the stator. The insulating member includes a butting portion. The butting portion is at least partially located in the slots. The butting portion is located between the stator yoke and the winding wire; in the radial direction of the stator, at least part of the butting portions of adjacent insulating members overlap, and at least part of the butting portion shields the stator yoke.

[0005] At least part of the butting portion of the insulating member is arranged to be located in the slot. In the radial direction of the stator, the butting portion is located between the stator yoke and the winding wire. At least part of the butting portions of adjacent insulating members overlap, and at least part of the butting portion shields the stator yoke. Such a setting can increase the creepage distance, reduce the contact probability between the winding wire and the stator, and reduce the occurrence of the phenomenon of poor withstand voltage.

[0006] Another purpose of this application is to provide a motor that reduces the phenomenon of poor withstand voltage.

[0007] The present application provides a motor, which includes a stator and a rotor. The stator includes a plurality of segmented iron cores, an insulating member, and windings. The segmented iron cores include segmented yoke portions and segmented tooth portions. The plurality of segmented iron cores are distributed around the rotation axis of the rotor, and the plurality of segmented iron cores are arranged in a circumferential enclosure. The segmented tooth portions extend from the segmented yoke portions towards the interior of the stator. The stator has wire grooves located between adjacent segmented tooth portions. At least part of the windings is located in the wire grooves. The insulating member covers at least part of the surface of the stator. The insulating member includes a butt joint portion, at least part of which is located in the wire grooves. The butt joint portion is located between the segmented yoke portion and the windings. In the radial direction of the stator, at least part of the butt joint portion shields the segmented yoke portion.

[0008] The stator includes segmented iron cores that are distributed around the rotation axis of the rotor and arranged in a circumferential enclosure. The butt joint portion of the insulating member is at least partly located in the wire grooves. In the radial direction of the stator, the butt joint portion is located between the segmented yoke portion and the windings, and at least partly shields the segmented yoke portion. Such an arrangement can increase the creepage distance, reduce the contact probability between the windings and the stator, and decrease the occurrence of poor withstand voltage phenomena. Description of the Drawings

[0009] Figure 1 Structural schematic diagram of the stator of the present application from one angle;

[0010] Figure 2 Cross-sectional schematic diagram of the stator of the present application;

[0011] Figure 3 Structural schematic diagram of the insulating member of the present application from one angle;

[0012] Figure 4 Structural schematic diagram of the insulating member of the present application from another angle;

[0013] Figure 5 Structural schematic diagram of the segmented iron core of the present application;

[0014] Figure 6 Structural schematic diagram of the stator of the present application from another angle;

[0015] Figure 7 is Figure 6 Enlarged schematic diagram of part A in;

[0016] Figure 8 Explosion schematic diagram of the segmented iron core in the stator;

[0017] Figure 9 Product schematic diagram of the motor with the present application. Detailed Description of the Invention

[0018] To better understand the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0019] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0020] As Figures 1 - 8 shown, the present application provides a stator 10, including a stator core 1, an insulating member 2, and a winding 4. The stator core 1 is arranged in a ring shape. The stator core 1 includes a stator yoke portion 11 and a stator tooth portion 12. The stator yoke portion 11 is located in the circumferential direction of the stator core 1. The stator tooth portion 12 extends toward the center direction of the stator 10. The stator yoke portion 11 is connected to the stator tooth portion 12. The stator 10 has a slot 101, and the slot 101 is located between adjacent stator tooth portions 12. The winding 4 is at least partially located in the slot 101. The insulating member 2 covers at least a part of the surface of the stator 10. The insulating member 2 includes an insulating body 21 and a butt joint portion 22. The butt joint portion 22 at least partially protrudes outward in a direction away from the insulating body 21. The butt joint portion 22 is at least partially located in the slot 101. The butt joint portion 22 is located between the stator yoke portion 11 and the winding 4. In the radial direction of the stator 10, at least a part of the butt joint portions 22 of adjacent insulating members 2 overlap, and the butt joint portion 22 at least partially shields the stator yoke portion 11.

[0021] The stator 10 includes a stator core 1 and an insulating member 2. The stator core 1 is in a circular ring shape. The insulating members 2 are arranged along the circumferential direction of the stator 10. The insulating members 2 are distributed on both axial sides of the stator core 1. The insulating members 2 located on both axial sides of the stator core 1 are butted against each other, and most of the stator core 1 is wrapped between the insulating members 2. Among them, the stator core 1 includes a stator yoke portion 11 and a stator tooth portion 12. The stator yoke portion 11 is located in the circumferential direction of the stator core 1. The stator tooth portion 12 extends toward the center direction of the stator 10. The stator tooth portion 12 and the stator yoke portion 11 are arranged in a substantially T shape. The stator yoke portion 11 includes a first yoke surface 111, a second yoke surface, a third yoke surface 112, and a fourth yoke surface 113. The first yoke surface 111 and the second yoke surface are axially opposite to each other. The third yoke surface 112 and the fourth yoke surface 113 are respectively connected to the first yoke surface 111 and the second yoke surface. The fourth yoke surface 113 and the third yoke surface 112 are radially opposite to each other. The third yoke surface 112 is located on the outer circumferential surface of the stator yoke portion 11. The fourth yoke surface 113 is located on the inner circumferential surface of the stator yoke portion 11.

[0022] The stator tooth portion 12 includes a first tooth portion surface 121, a second tooth portion surface, a third tooth portion surface 122, a fourth tooth portion surface, and a fifth tooth portion surface 123. The first tooth portion surface 121 extends along the radial direction of the stator 10. The first tooth portion surface 121 and the second tooth portion surface are axially opposite to each other. The third tooth portion surface 122 extends along the axial direction of the stator 10. The third tooth portion surface 122 and the fourth tooth portion surface are radially opposite to each other. The fifth tooth portion surface 123 extends along the axial direction of the stator 10. The fifth tooth portion surface 123 connects the first tooth portion surface 121, the second tooth portion surface, the third tooth portion surface 122, and the fourth tooth portion surface, and the fifth tooth portion surface 123 is located at one end of the stator tooth portion 12 away from the stator yoke portion 11. In this application, the fourth yoke portion surface 113 and the third tooth portion surface 122 are located in the wire groove 101. The insulating member 2 covers at least the first yoke portion surface 111, the second yoke portion surface, the fourth yoke portion surface 113, the first tooth portion surface 121, the second tooth portion surface, the third tooth portion surface 122, and the fourth tooth portion surface.

[0023] In this application, the insulating member 2 includes an insulating body 21 and a docking portion 22. The docking portion 22 protrudes outward in a direction away from the insulating body 21. The docking portion 22 is at least partially located in the wire groove 101. In the radial direction of the stator 10, at least a part of the docking portions 22 of adjacent insulating members 2 overlaps, and the docking portion 22 at least partially shields the stator yoke portion 11. By arranging at least a part of the docking portion 22 of the insulating member 2 in the wire groove 101 and ensuring that the docking portions 22 of adjacent insulating members 2 overlap in the radial direction of the stator 10, there will be at least two layers of docking portions 22 between the wire groove 101 and the stator yoke portion 11, further reducing the probability that the winding located in the wire groove 101 contacts the stator 10, increasing the creepage distance, and reducing the risk of poor withstand voltage. In addition, shielding at least a part of the stator yoke portion 11 by the docking portion 22 can also reduce the probability that the winding contacts the stator 10 and reduce the risk of poor withstand voltage.

[0024] Among them, the stator core can be composed of a plurality of segmented cores 102. The segmented cores 102 are distributed around the axis of the stator 10, and the segmented cores 102 are arranged in a circumferential enclosure. Here, the segmented cores 102 can be directly spliced to form the stator core, and can be welded together in a welding form to form an annular stator core. For example Figure 5As shown in the figure, the segmented iron core 102 includes a segmented yoke portion 1021 and segmented tooth portions. The segmented tooth portions extend from the segmented yoke portion 1021 towards the inside of the stator 10. At opposite ends of the segmented yoke portion 1021, there are splicing protrusions 10211 and splicing grooves 10212. In this application, the splicing protrusions 10211 and splicing grooves 10212 of two segmented iron cores 102 are spliced with each other, and then multiple segmented iron cores 102 are spliced into an annular stator core. The segmented tooth portions are connected to the segmented yoke portion 1021, and the segmented tooth portions and the segmented yoke portion 1021 are designed in a T shape. The segmented tooth portions include free ends 124 arranged away from the segmented yoke portion 1021 and connecting segments 125 connecting the free ends 124 and the segmented yoke portion 1021. The free ends 124 protrude outward in a direction away from the connecting segments 125. Among them, in this application, the stator core is formed by splicing segmented iron cores. The segmented yoke portions 1021 enclose the stator yoke portion 11, and the segmented tooth portions are the stator tooth portions 12.

[0025] Preferably, the insulating parts located on both axial sides of the stator core are first formed on the segmented iron cores respectively, and then the segmented iron cores with the insulating parts formed thereon are spliced into the stator core. It should be noted that the terms "multiple" and "several" in this article refer to more than two.

[0026] As Figures 2 - 4 shown in the figure, the docking portion 22 includes a first docking end 221 and a second docking end 222. The first docking end 221 and the second docking end 222 are located on opposite sides of the insulating body 21. The first docking end 221 and the second docking end 222 extend towards the adjacent insulating parts 2 respectively. The first docking end 221 includes a first rib 2211 and a first side wall 2212. The first rib 2211 protrudes from the first side wall 2212 in a direction away from the insulating body 21. The first rib 2211 and the first side wall 2212 are arranged in the radial direction. The second docking end 222 includes a second rib 2221 and a second side wall 2222. The second rib 2221 protrudes from the second side wall 2222 in a direction away from the insulating body 21. The second rib 2221 and the second side wall 2222 are arranged in the radial direction. The first rib 2211 is located on the side of the first side wall 2212 close to the stator yoke portion 11, and the second rib 2211 is located on the side of the second side wall 2222 away from the stator yoke portion 11. The first docking end 221 further includes a third side wall 2213. The third side wall 2213 is located on the side of the first rib 2211 close to the stator yoke portion 11. The first side wall 2212 and the third side wall 2213 are located on both sides of the first rib 2211.

[0027] As Figures 3 - 8As shown, the insulating body 21 includes a first insulating portion 211 and a second insulating portion 212. The first insulating portion 211 is connected to the second insulating portion 212. The first insulating portion 211 is arranged along the distribution direction of the stator yoke portion 11 and covers at least part of the surface of the stator yoke portion 11. The second insulating portion 212 is arranged along the distribution direction of the stator tooth portion 12 and covers at least part of the surface of the stator tooth portion 12. In this application, the insulating member 2 includes an insulating body 21 and a docking portion 22 that protrudes at least partially from the insulating body 21. The docking portion 22 is connected to the insulating body 21. The insulating body 21 includes a first insulating portion 211 and a second insulating portion 212. The first insulating portion 211 is arranged along the distribution direction of the stator yoke portion 11, and the second insulating portion 212 is arranged along the distribution direction of the stator tooth portion 12. The first insulating portion 211 covers all or part of the surface of the stator yoke portion 11, and the second insulating portion 212 covers all or part of the surface of the stator tooth portion 12.

[0028] Specifically, the first insulating portion 211 covers the first yoke surface 111, the second yoke surface, and the fourth yoke surface 113, and the second insulating portion 212 covers the first tooth surface 121, the second tooth surface, the third tooth surface 122, and the fourth tooth surface. The first insulating portion 211 includes a first insulating section 2111 and a second insulating section 2112. The first insulating section 2111 is connected to the second insulating section 2112. The second insulating section 2112 protrudes outward in a direction away from the first insulating section 2111. It can be understood that the first insulating section 2111 and the second insulating section 2112 protrude in opposite directions along the thickness of the insulating member 2. There are two second insulating sections 2112. The two second insulating sections 2112 on each insulating member 2 are arranged oppositely, and the two second insulating sections 2112 extend toward the adjacent insulating member 2 respectively.

[0029] When the insulating member 2 is disposed on the stator 10, since the insulating member 2 is butt-jointed on both axial sides of the stator 10 respectively, the first insulating section 2111 covers the first yoke surface 111 and the second yoke surface of the stator yoke 11, the second insulating section 2112 is at least partially inserted into the slot 101, and the second insulating section 2112 of the axially butt-jointed insulating member 2 covers the fourth yoke surface 113 of the stator yoke 11. In the present application, the second insulating section 2112 wraps the fourth yoke surface 113 of the stator yoke 11. Wherein, the insulating member 2 and the stator core 1 are arranged axially, and the insulating member 2 is distributed on both axial sides of the stator 10. That is, when the insulating member 2 is disposed on both axial sides of the stator 10, the first insulating section 2111 of the insulating body 2 covers the upper and lower two surfaces extending transversely of the stator yoke 11, the second insulating section 2112 of the insulating body 2 covers the inner surface extending longitudinally of the stator yoke 11, and the second insulating section 2112 is located in the slot 101. Wherein, in the present application, the second insulating section 2112 completely wraps the fourth yoke surface 113 of the stator yoke 11. Of course, the second insulating section 2112 may also wrap most of the fourth yoke surface 113 of the stator yoke 11. The second insulating section 2112 completely wrapping the fourth yoke surface 113 can further prevent the winding in the slot 101 from contacting the stator and reduce the probability of poor withstand voltage.

[0030] Specifically, the butt-joint portion 22 is connected to the second insulating section 2112. The first butt-joint end 221 and the second butt-joint end 222 of the butt-joint portion 22 are respectively arranged corresponding to the two second insulating sections 2212 of the first insulating portion 211. The first side wall 2212 and the third side wall 2213 are both located on the side of the second insulating section 2112 facing the adjacent insulating member 2. The first rib 2211 is located between the first side wall 2212 and the third side wall 2213. The third side wall 2213 is arranged close to the first insulating section 2111, and the first side wall 2212 is arranged away from the first insulating section 2111. Wherein, in combination Figure 6 、 Figure 7 As shown, the butt-joint portion 22 has a first gap 223 and a second gap 224. The first gap 223 is located between the first rib 2211 and the second side wall 2222, and the second gap 224 is located between the second rib 2221 and the first side wall 2212.

[0031] The difference between the first docking end 221 and the second docking end 222 is that there is also a third side wall 2213 between the first rib 2211 and the first insulating section 2111 of the first docking end 221. The setting of the third side wall 2213 results in a gap between the first rib 2211 and the stator yoke 11. It can be understood here that since the setting of the second side wall 2222 in the second docking end 222 already creates a gap between the second rib 2221 and the stator yoke 11, in order to ensure the perfect splicing of the first docking end 221 and the second docking end 222 when they are spliced, that is, to ensure that the first rib 2211 in the first docking end 221 is located in the groove formed between the second side wall 2222 and the second rib 2221 in the second docking end 222, and the second rib 2221 in the second docking end 222 is located in the groove formed between the first side wall 2212 and the first rib 2211 in the first docking end 221, the present application provides a third side wall 2213 between the first rib 2211 of the first docking end 221 and the stator yoke 11. In this way, when the docking parts 22 of the insulating part 2 are spliced with each other, it is ensured that in the radial direction of the stator, at least part of the docking parts 22 overlap, so as to increase the creepage distance and reduce the contact probability between the winding and the stator. In the present application, the docking parts 22 are spliced in a concave-convex form. Among them, when the docking parts 22 of adjacent insulating parts 2 are spliced with each other, there is a first gap 223 between the first rib 2211 of the first docking end 221 and the second side wall 2222 of the second docking end 222, and there is a second gap 224 between the second rib 2221 of the second docking end 222 and the first side wall 2212 of the first docking end 221. The settings of the first gap 223 and the second gap 224 are used to prevent assembly interference during the splicing process of the insulating part 2. Combining Figure 7 As shown, although there are a first gap 223 and a second gap 224 in the present application, when the first docking end 221 and the second docking end 222 of the docking part 22 are spliced, in the radial direction of the stator, there is an overlapping part between the first rib 2211 and the second rib 2221. The settings of the first gap 223 and the second gap 224 will not expose the stator yoke 11 to the wire groove 101, and the docking part 22 can still play a role in shielding the stator yoke 11.

[0032] Specifically, the stator 10 has a first channel 13 located between the docking portion 22 and the stator yoke portion 11. In this application, since the first docking end 221 includes a third side wall 2213 located between the first rib 2211 and the stator yoke portion 11, and the third side wall 2213 extends along the radial direction of the stator 10, in this way, the third side wall 2213 creates a gap between the first rib 2211 and the stator yoke portion 11, and this gap is the first channel 13. The setting of the first channel 13 is equivalent to the function of preventing glue overflow. This is because most of the insulating parts 2 are made of plastic material, and when the insulating part 2 is formed on the stator core 1, it generally adopts the form of plastic coating. The channel-type setting similar to the first channel 13 is used to prevent plastic from overflowing.

[0033] Specifically, the second insulating portion 212 includes a third insulating section 2121, a fourth insulating section 2122, and a fifth insulating section 2123. The third insulating section 2121 is connected to the fourth insulating section 2122. The third insulating section 2121 covers the third tooth surface 122 and the fourth tooth surface of the stator tooth portion 12. The fourth insulating section 2122 covers the first tooth surface 121 and the second tooth surface of the stator tooth portion 12. The fifth insulating section 2123 covers a partial surface of the free end 124 of the stator tooth portion 12. There are two third insulating sections 2121, and the two third insulating sections 2121 are respectively connected to both sides of the fourth insulating section 2122. The fifth insulating section 2123 is connected to the side of the fourth insulating section 2122 away from the stator yoke portion 11. The fifth insulating section 2123 includes a first protruding portion 21231 that is consistent with the protruding direction of the first insulating section 2111 and a second protruding portion 21232 that is consistent with the protruding direction of the second insulating section 2112. The third insulating section 2121 is connected to the second protruding portion 21232 and the second insulating section 2112.

[0034] An accommodation cavity is formed between the oppositely arranged third insulating section 2121 and the fourth insulating section 2122. The second insulating portion 212 also has an opening 2124 communicating with the accommodation cavity. The second protruding portion 21232 is located on both sides of the opening 2124. At least a part of the stator tooth portion 12 is located in the accommodation cavity, and the fifth tooth surface 123 of the stator tooth portion 12 is exposed from the opening 2124. The first protruding portion 21231 and the free end 124 of the stator tooth portion 12 are arranged radially. In this application, there is an exposed surface at the free end of the stator tooth portion, and the exposed surface faces the stator. Here, the outer surface of the stator tooth portion facing the free end is not wrapped with an insulating part, which helps the magnetic field lines of force to pass through.

[0035] When the insulating member 2 is disposed on the stator 10, the first insulating section 2111 covers the upper and lower two surfaces of the stator yoke 11 extending transversely, the second insulating section 2112 covers the inner surface of the stator yoke 11 extending longitudinally, the third insulating section 2121 covers the left and right surfaces of the stator tooth portion 12 extending longitudinally, the fourth insulating section 2122 covers the upper and lower surfaces of the stator tooth portion 12 extending transversely, and the fifth insulating section 2123 covers the free end 124 of a part of the stator tooth portion 12. Among them, the fifth insulating section 2123 has first grooves 21233 arranged oppositely, and the first grooves 21233 penetrate through the first protruding portion 21231 and the second protruding portion 21232.

[0036] Among them, a winding portion is formed between the first insulating section 2111 and the first protruding portion 21231. The third insulating section 2121 has a wavy structure. A wire groove 101 is formed among the first insulating section 2111, the first protruding portion 21231, and the third insulating section 2121. The winding 4 is at least partially located in the wire groove 101. Part of the winding is wound around the winding portion. On the basis of matching the winding profile, the wavy third insulating section 2121 also widens the average width of the third insulating section 2121. The width here refers to the distance between the third insulating section 2121 and the outer surface of the connecting section 125 of the stator tooth portion 12 located inside it. Since the insulating member is formed on the stator core in a plastic coating form, during the plastic coating process for the stator core, it may be due to the path width of the mold for forming the insulating structure being too narrow and the injection molding time being too long, resulting in the situation of insufficient glue in the latter half of the injection molding, that is, the insulating section at the free end 124 part. However, the wavy third insulating section 2121 widens the average width of the insulating section at this position. At this time, the path of the mold for forming the insulating structure becomes wider and the injection molding time is reduced, avoiding the occurrence of insufficient glue in the latter half of the injection molding.

[0037] In addition, the stator 10 further has a leakage opening 103 formed between the first protruding portions 21231 of adjacent fifth insulating segments 2123. A notch 104 is formed between the free ends 124 of adjacent stator tooth portions 12. The leakage opening 103 is located within the notch 104 and is in communication with the wire groove 101. To reduce magnetic leakage, a notch 104 is provided between the free ends 124 of the stator tooth portions 12. The first protruding portions 21231 of the fifth insulating segment 2123 at the free ends 124 extend toward the first protruding portions 21231 of the adjacent insulating member 2. The first protruding portions 21231 protrude axially from the fourth insulating segment 2122, and the first protruding portions 21231 also protrude radially from the third insulating segment 2121. The second protruding portions 21232 protrude radially from the third insulating segment 2121. Among them, in the present application, the first protruding portions 21231 and the second protruding portions 21232 are flush with each other in the axial direction of the stator. Of course, the first protruding portions 21231 and the second protruding portions 21232 may not be flush with each other in the axial direction. The radial width of the leakage opening 103 is smaller than the radial width of the notch 104, that is, the distance between the first protruding portions 21231 of the adjacent insulating members 2 is smaller than the distance between the free ends 124 of the adjacent stator tooth portions 12. In this way, on the basis of ensuring the existence of the notch 104 between the adjacent stator tooth portions 12 and reducing magnetic leakage, the first protruding portions 21231 can also block a part of the notch 104 as much as possible, preventing the winding in the wire groove 101 from exposing from the notch 104 and then contacting the stator, and further reducing the probability of poor withstand voltage.

[0038] Among them, the insulating member 2 in the present application is made of an insulating material, preferably plastic, and the stator core is made of a metal material. The forming process of the insulating member 2 on the stator is not limited in the present application.

[0039] The present application also provides a motor, including a stator 10 and a rotor 3. The stator 10 includes a plurality of segmented iron cores 102, an insulating member 2, and a winding 4. The segmented iron core 102 includes a segmented yoke portion 1021 and a segmented tooth portion. The plurality of segmented iron cores 102 are distributed around the rotation axis of the rotor 3, and the plurality of segmented iron cores 102 are circumferentially enclosed and distributed. The segmented tooth portion extends from the segmented yoke portion 1021 towards the inside of the stator 10. The stator 10 has a wire groove 101, and the wire groove 101 is located between adjacent segmented tooth portions 12. The winding 4 is at least partially located in the wire groove 101. The insulating members 12 are arranged along the circumferential direction of the stator 10. The insulating member 2 includes an insulating body 21 and a docking portion 22. The docking portion 22 at least partially protrudes outward in a direction away from the insulating body 21. The docking portion 22 is at least partially located in the wire groove 101. In the radial direction of the stator, the docking portion 22 is located between the segmented yoke portion 1021 and the winding 4, and the docking portion 22 at least partially shields the segmented yoke portion 1021. Among them, the insulating member 2 and the stator iron core 1 are arranged axially, and the insulating member 2 is distributed on both axial sides of the stator. Here, the plurality refers to more than two.

[0040] Figure 9 The figure is a schematic diagram of the stator and motor provided by the present application. The stator and motor provided by the present application can be applied to any product that requires a motor, including but not limited to products such as water pumps, compressors, actuators, brakes, and drivers.

[0041] The above embodiments are only used to illustrate the present application and do not limit the technical solutions described in the present application. The understanding of this specification should be based on those skilled in the art of the relevant technical field. For example, the directional descriptions such as "front", "rear", "left", "right", "up", and "down" are only used to describe the relationship between objects and are not substantial limitations. "Plurality" means at least two or more.

[0042] Although this specification has described the present application in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the relevant technical field can still modify the present application or make equivalent substitutions. All technical solutions and their improvements that do not depart from the spirit and scope of the present application shall be covered within the scope of the claims of the present application.

Claims

1. A stator, characterized in that, It includes a stator core (1), an insulating member (2) and a winding (4). The stator core (1) is arranged in a ring shape. The stator core (1) includes a stator yoke portion (11) and a stator tooth portion (12). The stator yoke portion (11) is located in the circumferential direction of the stator core (1). The stator tooth portion (12) extends towards the center direction of the stator (10). The stator (10) has a slot (101). The slot (101) is located between adjacent stator tooth portions (12). The winding (4) is at least partially located in the slot (101). The insulating member (2) covers at least part of the surface of the stator (10). The insulating member (2) includes a butt joint portion (22). The butt joint portion (22) is at least partially located in the slot (101). The butt joint portion (22) is located between the stator yoke portion (11) and the winding (4); In the radial direction of the stator (10), at least part of the butt joint portions (22) of adjacent insulating members (2) overlap, and the butt joint portion (22) at least partially shields the stator yoke portion (11).

2. The stator according to claim 1, characterized in that, The insulating member (2) includes an insulating body (21). The butt joint portion (22) at least partially protrudes outward in a direction away from the insulating body (21). The butt joint portion (22) includes a first butt joint end (221) and a second butt joint end (222). The first butt joint end (221) and the second butt joint end (222) are located on opposite sides of the insulating body (21). The first butt joint end (221) and the second butt joint end (222) respectively extend towards the adjacent insulating member (2).

3. The stator according to claim 2, characterized in that, The first butt joint end (221) includes a first rib (2211) and a first side wall (2212). The first rib (2211) protrudes from the first side wall (2212) in a direction away from the insulating body (21). The first rib (2211) and the first side wall (2212) are arranged in the radial direction. The second butt joint end (222) includes a second rib (2221) and a second side wall (2222). The second rib (2221) protrudes from the second side wall (2222) in a direction away from the insulating body (21). The second rib (2221) and the second side wall (2222) are arranged in the radial direction.

4. The stator according to claim 3, characterized in that, The first rib (2211) is located on the side of the first side wall (2212) close to the stator yoke portion (11). The second rib (2221) is located on the side of the second side wall (2222) away from the stator yoke portion (11). The first butt joint end (221) further includes a third side wall (2213). The third side wall (2213) is located on the side of the first rib (2211) close to the stator yoke portion (11). The first side wall (2212) and the third side wall (2213) are located on both sides of the first rib (2211).

5. The stator according to claim 3, wherein The docking part (22) has a first gap (223) and a second gap (224). The first gap (223) is located between the first rib (2211) and the second side wall (2222), and the second gap (224) is located between the second rib (2221) and the first side wall (2212).

6. The stator according to any one of claims 1-5, characterized in that, The insulating part (2) includes an insulating body (21). The insulating body (21) includes a first insulating part (211) and a second insulating part (212). The first insulating part (211) is connected to the second insulating part (212). The first insulating part (211) is arranged along the distribution direction of the stator yoke part (11), and the first insulating part (211) covers at least part of the surface of the stator yoke part (11). The second insulating part (212) is arranged along the distribution direction of the stator tooth part (12), and the second insulating part (212) covers at least part of the surface of the stator tooth part (12).

7. The stator according to any one of claims 1-5, characterized in that, The insulating part (2) and the stator core (1) are arranged axially, and the insulating part (2) is distributed on both axial sides of the stator (10).

8. The stator according to any one of claims 1-5, characterized in that, The stator (10) has a first channel (13), and the first channel (13) is located between the docking part (22) and the stator yoke part (11).

9. A motor, comprising a stator (10) and a rotor (3), characterized in that, The stator (10) includes a plurality of segmented cores (102), an insulating part (2) and a winding (4). The segmented cores (102) include segmented yoke parts (1021) and segmented tooth parts. A plurality of the segmented cores (102) are distributed around the rotation axis of the rotor (3), and a plurality of the segmented cores (102) are arranged in a circumferential enclosure. The segmented tooth parts extend from the segmented yoke parts (1021) towards the inside of the stator (10). The stator (10) has slot grooves (101), and the slot grooves (101) are located between adjacent segmented tooth parts. At least part of the winding (4) is located in the slot grooves (101). The insulating part (2) covers at least part of the surface of the stator (10). The insulating part (2) includes a docking part (22), and at least part of the docking part (22) is located in the slot grooves (101). The docking part (22) is located between the segmented yoke part (1021) and the winding (4). In the radial direction of the stator (10), at least part of the docking part (22) shields the segmented yoke part (1021).

10. The motor according to claim 9, characterized in that, The insulating part (2) and the segmented core (102) are arranged axially, and the insulating part (2) is distributed on both axial sides of the stator (10).

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