Stator core, stator, electric machine and method of assembling a stator

Abstract

The application provides a stator core, a stator, a motor and an assembling method of the stator, wherein the stator core is used for an axial motor and comprises a stator yoke, the stator yoke comprises at least one stator segment, the at least one stator segment forms a ring structure, and a mounting groove is formed in the stator yoke; a plurality of stator teeth are detachably connected with the stator yoke, the stator teeth are mounted in the mounting groove, and the stator teeth extend out of the stator yoke from an axial end surface of the stator yoke. The stator core has the advantages that on one hand, the winding process of the stator winding can be simplified, and the convenience of the stator winding is improved; on the other hand, the filling rate of the winding slot is improved, and thus the performance of the motor prepared from the stator core is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric machines, in particular to a stator core, a stator, an electric machine and a method for assembling a stator. BACKGROUND

[0002] In the related art, the axial flux electric machine has the problems of difficulty in winding, high assembly process difficulty and low efficiency, which is a major difficulty in limiting the application of the axial flux electric machine. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art or improved technology.

[0004] To this end, the present application proposes a stator core according to a first aspect of the present application.

[0005] The present application proposes a stator according to a second aspect of the present application.

[0006] The present application proposes an electric machine according to a third aspect of the present application.

[0007] The present application proposes a method for assembling a stator according to a fourth aspect of the present application.

[0008] Therefore, according to the first aspect of the present application, the present application proposes a stator core for an axial electric machine, comprising: a stator yoke, the stator yoke comprising at least one stator segment, the at least one stator segment forming a ring structure, the stator yoke being formed with a mounting groove; a plurality of stator teeth, the plurality of stator teeth being detachably connected with the stator yoke, the plurality of stator teeth being mounted in the mounting groove, the plurality of stator teeth extending out of the stator yoke from an axial end surface of the stator yoke.

[0009] The stator core proposed by the present application comprises a stator yoke and a plurality of stator teeth, the stator yoke comprises a plurality of stator segments, and the stator yoke is formed with a mounting groove, specifically, the mounting groove can be formed between adjacent stator segments, or one or more mounting grooves can be formed on one stator segment, and the stator teeth can be mounted in the mounting groove.

[0010] Further, the stator teeth and the stator yoke are detachably connected, and in combination with the structure of the stator segment, the winding can be performed on the stator teeth first, and then the stator teeth and the stator segment are combined, when the number of the stator segments is one, the entire core is completed, and when the number of the stator segments is multiple, the multiple stator segments are processed to complete the entire core. Furthermore, since the winding is performed on the stator teeth without the interference of the stator yoke, on the one hand, the winding process of the stator winding can be simplified, and the convenience of the stator winding is improved, on the other hand, it is also beneficial to improve the filling rate of the winding slot, thereby improving the performance of the electric machine prepared from the stator core.

[0011] Specifically, the stator teeth are extended from the axial end face of the stator yoke, that is, the stator teeth are arranged in the axial direction of the stator yoke, thereby forming the stator core required by the axial flux motor.

[0012] In addition, the stator core in the above technical solution according to the present application can further have the following additional technical features:

[0013] In the above technical solution, further, the opening is formed in the mounting slot towards the inner ring of the stator yoke.

[0014] In the technical solution, the opening is formed in the mounting slot towards the inner ring of the stator yoke, thereby shortening the distance between the two stator teeth in the radial direction after the stator yoke is formed in at least one stator segment, ensuring the compactness of the stator core, and reducing the limitation of the mounting slot on the freedom of the stator teeth during the installation of the stator teeth, thereby facilitating the installation of the stator teeth.

[0015] In any of the above technical solutions, further, the mounting slot is sectioned in a direction perpendicular to the axis of the stator yoke, and in the section, the mounting slot is rectangular or trapezoidal.

[0016] In the technical solution, the rectangular or trapezoidal mounting slot can be provided with a rectangular or trapezoidal stator tooth, and the rectangular and trapezoidal stator tooth is easier to manufacture, thereby reducing the overall manufacturing difficulty of the stator core by using the rectangular or trapezoidal mounting slot to cooperate with the stator.

[0017] In any of the above technical solutions, further, the stator tooth comprises a tooth body connected to the stator yoke, and a tooth shoe provided at one end of the tooth body, or the stator tooth comprises a tooth body connected to the stator yoke, and two tooth shoes provided at both ends of the tooth body.

[0018] In the technical solution, the stator tooth comprises a tooth body and a tooth shoe provided at one end of the tooth body, or the stator tooth comprises a tooth body and two tooth shoes provided at both ends of the tooth body, thereby providing a basis for the motor with a rotor on one side of the stator or with rotors on both sides of the stator.

[0019] In any of the above technical solutions, further, the tooth shoe and the tooth body are detachable or integrated.

[0020] In the technical solution, the tooth shoe and the tooth body can be detachable, thereby winding the wire on the tooth body first during winding, and then installing the tooth shoe on the tooth body after winding, thereby avoiding the interference of the tooth shoe during winding and further reducing the winding difficulty of the stator core.

[0021] The tooth shoe and the tooth body can be integrated, thereby reducing the error of the overall size parameters of the stator tooth, ensuring the performance of the motor, and reducing the installation steps.

[0022] In any of the above technical solutions, further, the stator segment comprises: a yoke body; a yoke shoulder provided on one side of the yoke body, wherein adjacent stator segments are connected through the yoke shoulder.

[0023] In this technical solution, the stator segment comprises a yoke body and a yoke shoulder, and adjacent stator segments are connected through the yoke shoulder, and the yoke body and the yoke shoulder of the two adjacent stator segments form a mounting groove, so that the overall structure is uniform and the strength can be guaranteed.

[0024] In any of the above technical solutions, further, the stator tooth further comprises: a positioning portion provided on the tooth body, and the positioning portion is abutted against the stator yoke.

[0025] In this technical solution, the stator tooth further comprises a positioning portion, and after the stator tooth is mounted in the mounting groove of the stator yoke, the mounting portion can be abutted against the stator yoke, thereby realizing positioning of the stator tooth, and ensuring that all stator teeth are at the same height, thereby ensuring the performance of the motor.

[0026] In any of the above technical solutions, further, based on the tooth shoe and the tooth body being a detachable structure, the tooth body is provided with a first connecting portion, the tooth shoe is provided with a second connecting portion, and the tooth body and the tooth shoe are connected through the first connecting portion and the second connecting portion.

[0027] In this technical solution, the tooth body and the tooth shoe are connected through the first connecting portion and the second connecting portion, and this connection mode is simple in structure and convenient to install.

[0028] In any of the above technical solutions, further, based on the tooth shoe and the tooth body being a detachable structure, the tooth body comprises: a plurality of first punching sheets, and the plurality of first punching sheets are stacked into the tooth body along the radial direction of the stator yoke; based on the tooth shoe and the tooth body being an integrated structure, the stator tooth comprises: a plurality of second punching sheets, and the plurality of second punching sheets are stacked into the stator tooth along the radial direction of the stator yoke.

[0029] In this technical solution, in the case of the tooth shoe and the tooth body being a detachable structure, the tooth body comprises a plurality of stacked first punching sheets, and the first punching sheets are stacked along the radial direction of the stator yoke, thereby forming the required stator core structure of the axial flux motor, and then the first punching sheets can be processed by stamping, and the tooth body is obtained by further processing, and the stator tooth is obtained by mounting the tooth shoe on the tooth body, and the stamping processing method has the advantages of low cost and high efficiency, thereby reducing the production difficulty of the stator core.

[0030] In the case of the tooth shoe and the tooth body being an integrated structure, the stator tooth comprises a plurality of stacked second punching sheets, and the second punching sheets are stacked along the radial direction of the stator yoke, thereby forming the required stator core structure of the axial flux motor, and then the second punching sheets can be processed by stamping, and the stator tooth is obtained by further processing, and the stamping processing method has the advantages of low cost and high efficiency, thereby reducing the production difficulty of the stator core.

[0031] In any of the above technical solutions, further, based on the case where the number of stator segments is multiple, the adjacent stator segments are connected by welding; or the adjacent stator segments are connected by injection molding; or the adjacent stator segments are connected by an insulating frame.

[0032] In this technical solution, the adjacent stator segments can be connected by welding, plastic connection or through an insulating frame.

[0033] In any of the above technical solutions, further, one side of the yoke shoulder is provided with a third connecting part, and the other side is provided with a fourth connecting part, and in the adjacent stator segments, the third connecting part on one stator segment is connected with the fourth connecting part on another stator segment.

[0034] In this technical solution, the third connecting part and the fourth connecting part are respectively arranged at both ends of the yoke shoulder, and then the two stator segments can be connected by the third connecting part and the fourth connecting part, specifically, the third connecting part can be a clamping groove, the fourth connecting part can be a buckle, or the third connecting part can be a plug, and the fourth connecting part can be a slot, etc.

[0035] In any of the above technical solutions, further, based on the case where the number of stator segments is multiple, the stator yoke is an integral structure, and the multiple stator segments are bent into a ring-shaped structure in a strip-shaped structure.

[0036] In this technical solution, the multiple stator segments are connected together in a one-piece strip-shaped structure, and then the multiple stator segments can be bent into a ring shape when the stator yoke is formed.

[0037] In any of the above technical solutions, further, the stator yoke comprises: a plurality of third punching sheets, and the plurality of third punching sheets are stacked along the axial direction of the stator core to form the stator yoke.

[0038] In this technical solution, the stator yoke comprises a plurality of stacked third punching sheets, and then the third punching sheets can be processed by stamping, and the stator yoke can be obtained by further processing, and the stamping processing method has the advantages of low cost and high efficiency, thereby reducing the production difficulty of the stator core.

[0039] Specifically, when the stamping layout is performed, the yoke body of one stator segment can be inserted between the yoke bodies of two stator segments, thereby maximizing the use of raw materials and saving raw material costs.

[0040] In the case where the stator yoke is an integral structure, two stator segments can be used in a relative form, that is, the yoke body of one stator segment can be inserted between the yoke bodies of two stator segments, thereby maximizing the use of raw materials and saving raw material costs.

[0041] The second aspect of the present application provides a stator, comprising: the stator core according to any one of the preceding technical solutions; a winding arranged on the stator core; and an insulation layer arranged between the stator core and the winding.

[0042] The stator provided by the present application comprises the stator core according to any one of the preceding technical solutions, and therefore has all the beneficial effects of the stator core according to any one of the preceding technical solutions, which are not repeated here.

[0043] The third aspect of the present application provides an electric machine, comprising: at least one stator according to any one of the preceding technical solutions; and at least one rotor corresponding to the stator.

[0044] The electric machine provided by the present application comprises at least one stator according to any one of the preceding technical solutions, and therefore has all the beneficial effects of the stator according to any one of the preceding technical solutions, which are not repeated here.

[0045] In the above technical solution, further, the number of the stators is less than the number of the rotors, and each stator is arranged between two adjacent rotors; or the number of the stators is greater than the number of the rotors, and each rotor is arranged between two adjacent stators.

[0046] In the technical solution, the number of the stators can be less than the number of the rotors, and when the number of the stators is less than the number of the rotors, two rotors are arranged on each side of each stator.

[0047] The number of the stators can be greater than the number of the rotors, and when the number of the stators is greater than the number of the rotors, two stators are arranged on each side of each rotor.

[0048] In any one of the above technical solutions, further, the number of the stators is a plurality, and the number of the stator teeth of the plurality of stators is the same; the number of the stators is a plurality, and the number of phases of the plurality of stators is the same; or the number of the stators is a plurality, and the number of the stator teeth of at least two stators of the plurality of stators is different; the number of the stators is a plurality, and the number of phases of at least two stators of the plurality of stators is different.

[0049] In the technical solution, when the number of the stators is a plurality, the number of the stator teeth of the plurality of stators can be the same or different; and when the number of the stators is a plurality, the number of phases of the plurality of stators can be the same or different.

[0050] The fourth aspect of the present application provides an assembling method of a stator, for the stator according to any one of the preceding technical solutions, comprising: coating an insulation layer on the stator teeth; arranging a plurality of stator teeth coated with the insulation layer according to a preset shape; winding a wire on the plurality of stator teeth to form a winding; and mounting the plurality of stator teeth with the winding to a stator yoke.

[0051] The assembling method of the stator provided by the application coats an insulating layer on the stator teeth first, then arranges the plurality of stator teeth according to the preset shape, that is, matches the winding track of the winding machine, then winds the wire on the stator teeth coated with the insulating layer to form the winding, and installs the stator teeth with the winding on the stator yoke to obtain the stator after the winding is completed. Further, since there is no interference of the stator yoke when winding the wire on the stator teeth, on the one hand, the winding process of the stator winding can be simplified, and the convenience of the stator winding is improved, and on the other hand, it is also beneficial to improve the filling rate of the winding slot, thereby improving the performance of the motor prepared by the stator core.

[0052] In the above technical solution, further, the step of installing the plurality of stator teeth with the winding on the stator yoke specifically includes: processing a plurality of stator segments of the stator yoke to form a ring structure; arranging the plurality of stator teeth with the winding according to the distribution mode of the mounting slots on the stator yoke; and embedding the stator teeth arranged according to the distribution mode of the mounting slots into the mounting slots.

[0053] In the above technical solution, further, the step of installing the plurality of stator teeth with the winding on the stator yoke specifically includes: processing a plurality of stator segments of the stator yoke to form a ring structure; arranging the plurality of stator teeth with the winding according to the distribution mode of the mounting slots on the stator yoke; and embedding the stator teeth arranged according to the distribution mode of the mounting slots into the mounting slots.

[0054] In any of the above technical solutions, further, based on the case that the stator yoke is a one-piece structure: the step of installing the plurality of stator teeth with the winding on the stator yoke specifically includes: positioning the plurality of stator teeth with the winding with a plurality of stator segments of the stator yoke; and bending the plurality of stator segments with the positioned stator teeth to form a ring structure.

[0055] In the above technical solution, further, based on the case that the stator yoke is a one-piece structure: the step of installing the plurality of stator teeth with the winding on the stator yoke specifically includes: positioning the plurality of stator teeth with the winding with a plurality of stator segments of the stator yoke; and bending the plurality of stator segments with the positioned stator teeth to form a ring structure.

[0056] In any of the above technical solutions, further, based on the condition that the shoe and the tooth body of the stator tooth are detachable structures, the step of coating the insulating layer on the stator tooth is specifically: coating the insulating layer on the tooth body; the step of arranging the plurality of stator teeth coated with the insulating layer in the preset shape is specifically: arranging the plurality of tooth bodies coated with the insulating layer in the preset shape; the step of winding the conductive wire on the plurality of stator teeth to form the winding is specifically: winding the conductive wire on the plurality of tooth bodies to form the winding; and the step of mounting the plurality of stator teeth formed with the winding on the stator yoke comprises: mounting the plurality of tooth bodies formed with the winding on the stator yoke; and the assembling method of the stator further comprises: mounting the shoe on the tooth body mounted on the stator yoke.

[0057] In the technical solution, in the condition that the shoe and the tooth body of the stator tooth are detachable structures, the assembling method of the stator comprises: coating the insulating layer on the stator tooth; arranging the plurality of stator teeth coated with the insulating layer in the preset shape; winding the conductive wire on the plurality of stator teeth to form the winding; and mounting the plurality of stator teeth formed with the winding on the stator yoke is specifically:

[0058] The insulating layer is coated on the tooth body first, then the plurality of tooth bodies are arranged in the preset shape, i.e. matched with the winding track of the winding machine, then the conductive wire is wound on the tooth body coated with the insulating layer to form the winding, after the winding is completed, the tooth body with the winding is mounted on the stator yoke, then the shoe is mounted on the tooth body, and the stator is obtained. Thus, the interference of the shoe is avoided during winding, and the winding difficulty of the stator core is further reduced.

[0059] Additional aspects and advantages of the application will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0060] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0061] Figure 1 A structure schematic diagram of a stator core provided by an embodiment of the present application is shown;

[0062] Figure 2 A structure schematic diagram of a stator yoke in a stator core provided by an embodiment of the present application is shown;

[0063] Figure 3 A schematic diagram of a stator yoke in a stator core provided by an embodiment of the present application before forming a ring structure is shown;

[0064] Figure 4 A connection schematic diagram of two stator segments in a stator core provided by an embodiment of the present application is shown;

[0065] Figure 5A schematic view showing a punching arrangement of two stator yokes in a stator core according to an embodiment of the present application is shown.

[0066] Figure 6 A schematic view showing a structure of a stator yoke in a stator core according to an embodiment of the present application is shown.

[0067] Figure 7 A schematic view showing a structure of a stator yoke in a stator core according to an embodiment of the present application is shown.

[0068] Figure 8 A schematic view showing a punching arrangement of two stator yokes in a stator core according to an embodiment of the present application is shown.

[0069] Figure 9 A schematic view showing a structure of a stator tooth in a stator core according to an embodiment of the present application is shown.

[0070] Figure 10 A schematic view showing a structure of a stator tooth in a stator core according to an embodiment of the present application is shown.

[0071] Figure 11 A schematic view showing a structure of a stator tooth in a stator core according to an embodiment of the present application is shown.

[0072] Figure 12 A schematic view showing Figure 11 An exploded view of the stator tooth is shown.

[0073] Figure 13 A schematic view showing a structure of a motor according to an embodiment of the present application is shown.

[0074] Figure 14 A flow chart showing an assembly method of a stator according to an embodiment of the present application is shown.

[0075] Figure 15 A flow chart showing an assembly method of a stator according to another embodiment of the present application is shown.

[0076] Figure 16 A flow chart showing an assembly method of a stator according to another embodiment of the present application is shown.

[0077] Figure 17 A flow chart showing an assembly method of a stator according to another embodiment of the present application is shown.

[0078] Figure 18 A flow chart showing an assembly method of a stator according to another embodiment of the present application is shown.

[0079] In the above description, Figures 1 to 13 The correspondence between the reference signs and the component names in the above description is as follows:

[0080] 100 Motor, 110 Stator Core, 112 Stator Yoke, 1122 Stator Split, 1124 Yoke Body, 1126 Yoke Shoulder, 1128 Third Connecting Part, 1130 Fourth Connecting Part, 114 Stator Gear, 1142 Gear Body, 1144 Gear Shoe, 1146 Positioning Part, 1148 First Connecting Part, 1150 Second Connecting Part, 116 Mounting Slot, 120 Winding, 130 Rotor, 132 Magnetic Components, 134 Rotor Yoke. Detailed Implementation

[0081] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0082] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0083] The following reference Figures 1 to 18 This describes the assembly method of the stator core 110, stator, motor 100, and stator according to some embodiments of the present invention.

[0084] Example 1:

[0085] like Figures 1 to 13 As shown, according to a first aspect embodiment of the present invention, the present invention provides a stator core 110 for use in an axial motor 100. The stator core 110 includes a stator yoke 112 and stator teeth 114, the stator yoke 112 and the stator teeth 114 being detachably connected. Furthermore, the stator yoke 112 includes a plurality of stator segments 1122, which can be sequentially connected to form a ring structure. Further, mounting grooves 116 are formed between adjacent stator segments 1122, or one or more mounting grooves 116 are formed on a single stator segment 1122. Specifically, the stator core is applied to an axial flux motor, and the stator teeth extend from the axial end face of the stator yoke.

[0086] The stator core 110 provided by the present invention includes a stator yoke 112 and a plurality of stator teeth 114. The stator yoke 112 includes a plurality of stator segments 1122, and mounting grooves 116 are formed between adjacent stator segments 1122, or one or more mounting grooves 116 are formed on one stator segment 1122. The stator teeth 114 can be mounted in the mounting grooves 116.

[0087] Specifically, the stator yoke 112 in the related art is a whole annular structure, resulting in material waste in the annular middle part and the part between the two annular parts. The present application adopts a plurality of stator segments 1122 to form an annular structure, and for a single stator segment 1122, it is not a closed shape, thus avoiding the waste of raw materials in the middle part, and since the outer wall of the single stator segment 1122 is also not 360 degrees, the waste of raw materials between the two stator segments is also reduced accordingly, thus improving the utilization rate of raw materials for the same piece of raw material, saving production costs.

[0088] Further, the stator teeth 114 and the stator yoke 112 are detachably connected, and in combination with the structure of the stator segment 1122, the winding can be performed on the stator teeth 114 first, and then the stator teeth 114 and the stator segment 1122 are combined, and then the plurality of stator segments 1122 are processed to complete the entire core. Further, since there is no interference of the stator yoke 112 when winding on the stator teeth 114, on the one hand, the winding process of the stator winding 120 can be simplified, and the convenience of stator winding is improved, on the other hand, it is also beneficial to improve the filling rate of the winding slot, thereby improving the performance of the motor 100 prepared from the stator core 110.

[0089] Specifically, the stator yoke 112 can be bent into an arc or a polygonal plurality of stator segments 1122 spliced together, that is, a strip-shaped stator segment 1122 combination can be punched out during processing, and the stator yoke 112 is bent by one or more stator segments 1122.

[0090] Further, as shown in Figure 5 and Figure 8 When punching and arranging, one of the two identical stator segments 1122 combination parts can be arranged in the gap space between the adjacent stator segments 1122 of the other stator segment 1122 combination, forming a double-row separable structure of the stator yoke 112.

[0091] Each stator tooth 114 is arranged along the axial direction of the stator yoke 112 part, and the stator tooth 114 is detachably connected with the stator yoke 112 part. The mounting groove 116 on the stator yoke 112 is matched with the shape of the stator tooth 114, and the stator tooth 114 passes through the mounting groove 116 and the stator yoke 112 to form the stator core 110.

[0092] When assembling the stator, at least one winding 120 is wound on the stator segment 1122 of at least one stator tooth 114, and the adjacent two stator segments 1122 are limited to define the mounting groove 116 after being bent.

[0093] In the spliced ​​strip lamination structure, the gap between two stator segments 1122 in one stator segment 1122 assembly is partially filled by another stator segment 1122 assembly. This minimizes waste material between stator segments 1122 on the double-row laminations, thereby reducing material waste and lowering product costs. During the fabrication of the stator yoke 112, the stator segments 1122 can be bent to form arc-shaped, annular, or polygonal stator yokes 112.

[0094] On the other hand, the stator core 110 is formed by a separable stator yoke 112 and a plurality of stator teeth 114. By setting the stator yoke 112 and stator teeth 114 as a separable assembly structure, the stator yoke 112 and stator teeth 114 can be assembled after the stator teeth 114 winding 120 is completed. On the one hand, this simplifies the winding process of the stator winding 120 and improves the convenience of stator winding. On the other hand, it also helps to improve the filling rate of the winding slot, thereby improving the performance of the motor 100 made from the stator core 110.

[0095] On the other hand, the stator windings 120 are wound on the stator teeth 114. There can be multiple windings 120, and the coil shapes of the multiple windings 120 can be the same or different. There can be one set, two sets, or more sets of windings 120.

[0096] Specifically, after the stator teeth 114 winding 120 is completed, the stator teeth 114 and the straight stator yoke 112 can be arranged in opposite pairs before the stator yoke 112 is bent, thereby reducing the complexity of the final assembly process.

[0097] Specifically, the process of assembling the stator core 110 into a stator can be as follows: first, an insulating layer is wrapped around the stator teeth 114; then, multiple stator teeth 114 are arranged in a preset shape, matching the winding trajectory of the winding machine; then, wires are wound around the insulating stator teeth 114 to form a winding 120; after winding, the stator teeth 114 with the winding 120 are mounted on the stator yoke 112 to obtain the stator. Furthermore, since there is no interference from the stator yoke 112 when winding on the stator teeth 114, the winding process of the stator winding 120 is simplified, improving the convenience of stator winding; on the other hand, it also helps to increase the filling rate of the winding slots, thereby improving the performance of the motor 100 formed from the stator core 110.

[0098] Or the stator yoke 112 includes a stator segment 1122, the stator segment 1122 is annular structure, further, the installation groove 116 is formed between the adjacent two stator segments 1122. Namely, the winding can be carried out on the stator tooth first, then the stator tooth and the stator segment are combined, when the number of the stator segment is one, the whole core is completed, and the installation difficulty of the stator core can be reduced.

[0099] Embodiment 2:

[0100] As shown in Figure 2 and Figure 6 , on the basis of embodiment 1, further, the installation groove 116 is connected with the inner ring space of the stator core 110, namely, the installation groove 116 is provided with an opening on the side of the inner ring of the stator yoke 112.

[0101] In this embodiment, the installation groove 116 is provided with an opening on the side of the inner ring of the stator yoke 112, further, when the stator tooth 114 is installed, the stator tooth 114 can be provided with appropriate activity allowance, further, the interference fit between the installation groove 116 and the stator tooth 114 is avoided, the installation difficulty is reduced, the installation groove 116 limits the freedom of the stator tooth 114 in three directions, further, in one direction, the stator tooth 114 can move a certain distance, so that the installation and assembly of the stator tooth 114 are facilitated. And after the plurality of stator segments 1122 form the stator yoke 112, the distance between the two stator teeth 114 in the radial direction is shortened, the compactness of the stator core 110 is ensured.

[0102] Embodiment 3:

[0103] As shown in Figure 2 and Figure 6 , on the basis of embodiment 1 or embodiment 2, further, the installation groove 116 is cross-sectioned in the direction perpendicular to the axis of the stator yoke 112, and in the cross-section, the installation groove 116 is rectangular or trapezoidal.

[0104] In this embodiment, the installation groove 116 is cross-sectioned in the direction perpendicular to the axis of the stator yoke 112, and in the cross-section, the installation groove 116 is rectangular, further, the cross-sectional shape of the stator tooth 114 is also rectangular, the stator core 110 is formed by assembling the stator tooth 114 and the installation groove 116, and the rectangular installation groove 116 cooperates with the rectangular stator tooth 114, and the rectangular shape is easy to butt joint, so that the installation of the stator core 110 is facilitated.

[0105] Embodiment 4:

[0106] On the basis of embodiment 1 or embodiment 2, further, the installation groove 116 is cross-sectioned in the direction perpendicular to the axis of the stator yoke 112, and in the cross-section, the installation groove 116 is trapezoidal.

[0107] In this embodiment, the mounting groove 116 is sectioned in a direction perpendicular to the axis of the stator yoke 112, and in the section, the mounting groove 116 is trapezoidal, and the section shape of the stator tooth 114 is also trapezoidal, the stator core 110 is formed by the assembly of the stator tooth 114 and the mounting groove 116, and the trapezoidal mounting groove 116 matches the trapezoidal stator tooth 114, which is easier to butt joint, and thus the installation of the stator core 110 is facilitated, and the trapezoidal shape also facilitates the positioning effect of the stator tooth 114 through the mounting groove 116, avoiding the jumping of the stator tooth 114.

[0108] Embodiment 5:

[0109] As shown in Figure 9 , Figure 11 and Figure 12 , on the basis of any one of Embodiments 1 to 4, further, the stator tooth 114 comprises: a tooth body 1142 and a tooth shoe 1144, the tooth body 1142 can be connected with the stator yoke 112, that is, the stator tooth 114 is installed on the stator yoke 112 through the tooth body 1142, and the tooth shoe 1144 is arranged at one end of the tooth body 1142, and when the winding 120 is arranged, the winding 120 is wound on the tooth body 1142.

[0110] In this embodiment, based on arranging the tooth shoe 1144 on one side of the tooth body 1142, an installation basis is provided for the motor 100 in which the stator is single-sidedly provided with the rotor 130.

[0111] Embodiment 6:

[0112] As shown in Figure 10 , on the basis of any one of Embodiments 1 to 4, further, the stator tooth 114 comprises: a tooth body 1142 and two tooth shoes 1144, the tooth body 1142 can be connected with the stator yoke 112, that is, the stator tooth 114 is installed on the stator yoke 112 through the tooth body 1142, and the two tooth shoes 1144 are arranged at opposite ends of the tooth body 1142, and when the stator yoke 112 is installed, it is located between the two tooth shoes 1144, and when the winding 120 is arranged, the winding 120 is wound on the tooth body 1142, and the number of windings 120 is two, one winding 120 is located between one tooth shoe 1144 and the stator yoke 112, and the other winding 120 is located between the other tooth shoe 1144 and the stator yoke 112.

[0113] In this embodiment, based on arranging one tooth shoe 1144 on each side of the tooth body 1142, an installation basis is provided for the motor 100 in which the stator is bilaterally provided with the rotor 130.

[0114] Embodiment 7:

[0115] As shown in Figure 10 , Figure 11 andFigure 12 As shown, based on Embodiment 5 or Embodiment 6, the toothed shoe 1144 and the toothed body 1142 are further designed as separate, detachable structures.

[0116] In this embodiment, the toothed shoe 1144 and the toothed body 1142 can be a separate structure, that is, the toothed shoe 1144 and the toothed body 1142 are detachable. Thus, when winding, the wire can be wound on the toothed body 1142 first. After the winding is completed, the toothed shoe 1144 is installed on the toothed body 1142, thereby avoiding interference from the toothed shoe 1144 during winding and further reducing the difficulty of winding the stator core 110.

[0117] Specifically, the winding process is as follows: First, an insulating layer is wrapped around the tooth body 1142. Then, multiple tooth bodies 1142 are arranged in a preset shape, matching the winding trajectory of the winding machine. Next, wires are wound around the insulating tooth bodies 1142 to form a winding 120. After winding, the tooth body 1142 with the winding 120 is installed on the stator yoke 112. Finally, a tooth shoe 1144 is installed on the tooth body 1142 to obtain the stator. Furthermore, the tooth shoe 1144 also serves to fix the winding 120, preventing it from detaching from the stator tooth body 114.

[0118] Furthermore, the materials of the tooth body 1142 and the tooth boot 1144 can be the same or different.

[0119] Example 8:

[0120] like Figure 10 As shown, based on Embodiment 7, a first connecting portion 1148 is further provided at the end of the tooth body 1142, and a second connecting portion 1150 adapted to the first connecting portion 1148 is provided on the tooth shoe 1144. Thus, the connection and fixation of the tooth body 1142 and the tooth shoe 1144 are achieved through the cooperation of the first connecting portion 1148 and the second connecting portion 1150.

[0121] In this embodiment, the tooth body 1142 and the tooth shoe 1144 are connected by the first connecting part 1148 and the second connecting part 1150, thereby realizing the active connection and positioning of the tooth body 1142 and the tooth shoe 1144. This connection method has a simple structure and is easy to install.

[0122] Specifically, a dovetail groove can be opened at the end of the tooth body 1142, and a protrusion that matches the dovetail groove can be provided on the tooth shoe 1144. The tooth body 1142 and the tooth shoe 1144 can be installed and matched by installing the protrusion and the dovetail groove.

[0123] Furthermore, a groove or through hole can be made on the toothed shoe 1144, and the end of the toothed body 1142 can be inserted into the groove or through hole to achieve the installation and mating of the toothed body 1142 and the toothed shoe 1144.

[0124] Embodiment 9:

[0125] As shown in the Figures 9 to 12 embodiment 7 or the embodiment 8, further, the tooth body 1142 is stacked by a plurality of first punching sheets along the radial direction of the stator yoke 112.

[0126] In this embodiment, the tooth body 1142 includes a plurality of first punching sheets stacked along the radial direction of the stator yoke 112, thereby forming the structure of the stator core 110 required by the axial flux motor, and the first punching sheets can be processed by stamping, and then the tooth body 1142 is processed, and the stator tooth 114 is obtained by installing the tooth shoe 1144 on the tooth body 1142, and the stamping processing method has the advantages of low cost and high efficiency, thereby reducing the production difficulty of the stator core 110.

[0127] Specifically, the first punching sheet is a magnetic conducting sheet, and specifically, a plurality of first punching sheets are stacked along the radial direction or the circumferential direction of the stator yoke 112, thereby improving the magnetic conducting capability of the stator core 110.

[0128] Embodiment 10:

[0129] As shown in the Figure 9 embodiment 5 or the embodiment 6, further, the tooth shoe 1144 and the tooth body 1142 are an integrated structure.

[0130] In this embodiment, the tooth shoe 1144 and the tooth body 1142 can be an integrated structure, thereby reducing the error of the size parameters of the whole stator tooth 114, ensuring the performance of the motor 100, and reducing the installation steps.

[0131] Embodiment 11:

[0132] As shown in the Figure 9 embodiment 10, further, the stator tooth 114 is stacked by a plurality of second punching sheets along the radial direction of the stator yoke 112.

[0133] In this embodiment, the stator tooth 114 includes a plurality of second punching sheets stacked along the radial direction of the stator yoke 112, thereby forming the structure of the stator core 110 required by the axial flux motor, and the second punching sheets can be processed by stamping, and then the stator tooth 114 is processed, and the stamping processing method has the advantages of low cost and high efficiency, thereby reducing the production difficulty of the stator core 110.

[0134] Specifically, the second punching sheet is a magnetic conducting sheet, and specifically, a plurality of second punching sheets are stacked along the radial direction or the circumferential direction of the stator yoke 112, thereby improving the magnetic conducting capability of the stator core 110.

[0135] Embodiment 12:

[0136] As shown in Figures 9 to 12 embodiments 1 to 11, further, the stator tooth 114 further comprises a positioning portion 1146 for abutting against the stator yoke 112.

[0137] In this embodiment, the positioning portion 1146 is further provided on the stator, and the positioning of the stator tooth 114 is achieved by the abutment of the positioning portion 1146 and the stator yoke 112, thereby ensuring that the exposed part of the stator tooth 114 is at the same height, ensuring the position accuracy of the winding 120, and further ensuring the magnetic field structure, thereby improving the performance of the motor 100.

[0138] Specifically, the positioning portion 1146 is provided on the tooth body 1142.

[0139] Further, the positioning portion 1146 is a positioning protrusion provided on the tooth body 1142, and when the stator tooth 114 is inserted into the installation slot 116, the positioning protrusion abuts against the stator yoke 112 on the side of the installation slot 116, thereby limiting the stator tooth 114 to a certain height, thereby ensuring the positioning effect of the stator tooth 114.

[0140] Further, in the case where the tooth body 1142 has the tooth shoe 1144 at both ends, two positioning portions 1146 are provided on the tooth body 1142 in the direction of the two tooth shoes 1144, and the stator yoke 112 is located between the two positioning portions 1146.

[0141] Embodiment 13:

[0142] As shown in Figure 2 , Figure 3 , Figure 6 , Figure 7 On the basis of any one of embodiments 1 to 12, further, the stator segment 1122 comprises a yoke body 1124 and a yoke shoulder 1126 connected to the yoke body 1124. The yoke shoulder 1126 is provided on one side of the yoke body 1124, and adjacent stator segments 1122 are connected through the yoke shoulder 1126.

[0143] In this embodiment, the stator segment 1122 comprises the yoke body 1124 and the yoke shoulder 1126, and adjacent stator segments 1122 are connected through the yoke shoulder 1126, and the yoke body 1124 and the yoke shoulder 1126 of the two adjacent stator segments 1122 form the installation slot 116. The overall structure is uniform, and the strength can be guaranteed.

[0144] Embodiment 14:

[0145] On the basis of embodiment 13, further, based on the case where the number of stator segments 1122 is multiple, and the stator segments 1122 are independent structures.

[0146] The connection method for the entire stator segment 1122 can be to weld adjacent stator segments 1122 together. Specifically, the welding point is located at the yoke shoulder 1126.

[0147] The stator segments 1122 of the entire ring can be connected by connecting the stator segments 1122 of the entire ring stator yoke 112 together by injection molding. Furthermore, by making reasonable use of the injection molding material, insulation of the stator yoke 112 can be achieved. Thus, the steps of connecting the stator segments 1122 and the steps of insulating the stator yoke 112 are combined into one step, thereby simplifying the assembly steps of the motor 100.

[0148] The stator segments 1122 of the entire ring can be connected by connecting the stator segments 1122 of the entire ring stator yoke 112 through an insulating frame, thereby combining the steps of connecting the stator segments 1122 and insulating the stator yoke 112 into one step, thus simplifying the assembly steps of the motor 100.

[0149] Example 15:

[0150] like Figure 4 As shown, based on embodiment 13, a third connecting portion 1128 is provided on one side of the yoke shoulder 1126, and a fourth connecting portion 1130 is provided on the other side of the yoke shoulder 1126. In adjacent stator segments 1122, the third connecting portion on one stator segment 1122 is connected to the fourth connecting portion 1130 on the other stator segment 1122.

[0151] In this embodiment, a third connecting portion 1128 is provided on one side of the yoke shoulder 1126, and a fourth connecting portion 1130 adapted to the third connecting portion 1128 is provided on the other side. The stator yoke 112 is thus formed by connecting the third connecting portion 1128 and the fourth connecting portion 1130.

[0152] Specifically, a slot can be provided on one side of the yoke shoulder 1126 and a buckle can be provided on the other side of the yoke shoulder 1126, thereby achieving the assembly of the stator yoke 112 through the engagement of the slot and the buckle.

[0153] Specifically, a slot can be provided on one side of the yoke shoulder 1126 and a tongue can be provided on the other side of the yoke shoulder 1126, thereby realizing the assembly of the stator yoke 112 through the insertion of the slot and the tongue.

[0154] Example 16:

[0155] Based on any of Embodiments 1 to 15, further, when there are multiple stator segments 1122, the stator yoke 112 is an integral structure, and the multiple stator segments 1122 are bent into a ring structure in a strip structure.

[0156] In this embodiment, the plurality of stator segments 1122 are of an integral structure, i.e. the plurality of stator segments 1122 form a strip, and the strip-shaped stator segments 1122 are bent to form a ring. Specifically, a polygonal ring structure or a circular ring structure can be formed.

[0157] The connection mode of the whole-circle stator segments 1122 can be that the strip-shaped stator segments 1122 are bent, and the stator segments 1122 at both ends are welded together, specifically, the welding points are located at the yoke shoulders 1126. Also, as shown in Figure 5 With Figure 8 As shown, the strip-shaped stator yoke 112 can be arranged alternately with the stator teeth 114 during stamping, thereby improving the utilization rate of raw materials.

[0158] The connection mode of the whole-circle stator segments 1122 can be that the strip-shaped stator segments 1122 are bent and connected together by injection molding, and after reasonable use of the injection molding raw materials, the insulation of the stator yoke 112 can be realized, thereby combining the steps of connecting the stator segments 1122 and insulating the stator yoke 112 into one step, thereby simplifying the assembly steps of the motor 100.

[0159] The connection mode of the whole-circle stator segments 1122 can be that the strip-shaped stator segments 1122 are bent and connected together by an insulation frame, thereby combining the steps of connecting the stator segments 1122 and insulating the stator yoke 112 into one step, thereby simplifying the assembly steps of the motor 100.

[0160] Alternatively, the strip-shaped stator segments 1122 are bent to form a ring, and a plurality of strip-shaped stator segments 1122 are spliced to form a stator yoke 112.

[0161] The connection mode of the whole-circle stator segments 1122 can be that the plurality of strip-shaped stator segments 1122 are bent, and the stator segments 1122 at both ends of different strip-shaped stator segments 1122 are welded together, specifically, the welding points are located at the yoke shoulders 1126.

[0162] The connection mode of the whole-circle stator segments 1122 can be that the plurality of strip-shaped stator segments 1122 are bent and connected together by injection molding, and after reasonable use of the injection molding raw materials, the insulation of the stator yoke 112 can be realized, thereby combining the steps of connecting the stator segments 1122 and insulating the stator yoke 112 into one step, thereby simplifying the assembly steps of the motor 100.

[0163] The connection mode of the whole-circle stator segment 1122 can be that the plurality of strip-shaped stator segments 1122 are bent and connected through the insulating frame, thereby combining the step of connecting the stator segments 1122 and the step of insulating the stator yoke 112 into one step, and thereby simplifying the assembly steps of the motor 100.

[0164] Embodiment 17

[0165] As shown in any one of Embodiments 1 to 15, further, the stator yoke 112 has a plurality of third punching sheets stacked along the axial direction of the stator core 110. Figure 1

[0166] In this embodiment, the stator yoke 112 includes a plurality of stacked third punching sheets, thereby the third punching sheets can be processed by stamping, and then the stator yoke 112 is obtained, and the stamping processing mode has the advantages of low cost and high efficiency, thereby reducing the production difficulty of the stator core 110.

[0167] Specifically, when stamping, the yoke body 1124 of one stator segment 1122 can extend between the yoke bodies 1124 of two stator segments 1122, thereby the raw material is used to the maximum extent and the raw material cost is saved.

[0168] Specifically, the plurality of third punching sheets are stacked along the axial direction of the stator core 110. On the one hand, it is beneficial to improve the magnetic conductivity of the stator core 110 and reduce the eddy current loss, and on the other hand, it is compatible with the existing manufacturing process of the radial stator core 110, thereby greatly reducing the preparation difficulty and cost of the core process of the axial flux motor 100.

[0169] In the case where the stator yoke 112 is a one-piece structure, two stator segments 1122 can be used in a relative form, that is, the yoke body 1124 of one stator segment 1122 still extends between the yoke bodies 1124 of two stator segments 1122, thereby the raw material is used to the maximum extent and the raw material cost is saved.

[0170] Specifically, the insulating layer can be an insulating plastic package integrally molded with the stator tooth 114, or can be an insulating paper, etc.

[0171] Embodiment 18

[0172] As shown in any one of Embodiments 1 to 15, further, the stator yoke 112 has a plurality of third punching sheets stacked along the axial direction of the stator core 110. Figure 13

[0173] ​​The stator provided by the application comprises the stator core 110 provided by any one of the embodiments, and thus has all the beneficial effects of the stator core 110 provided by any one of the embodiments, which are not repeated here.

[0174] Embodiment 19

[0175] As Figures 1 to 13 shown, the application provides a stator of an axial flux motor 100, comprising a stator core 110 and at least one stator winding 120. The stator core 110 comprises a stator yoke 112 and at least one stator tooth 114. The stator yoke 112 is spliced by at least one stator segment 1122 which can be bent into an arc shape or a polygonal shape, and the stator segment 1122 is made in the form of a lamination stack. The stator segment 1122 comprises a yoke shoulder 1126 and a yoke body 1124, and the yoke bodies 1124 of two adjacent stator segments 1122 define an installation groove 116 therebetween after being bent. The yoke body 1124 of one of the two identical stator segments 1122 is arranged in the gap space of the yoke body 1124 of the other stator segment 1122, forming a double-row separable structure of the yoke body 1124. Each stator tooth 114 is arranged in the axial direction of the stator yoke 112 part, and the stator tooth 114 is detachably connected with the stator yoke 112. The installation groove 116 on the stator yoke 112 part is matched with the shape of the stator tooth 114, and the stator tooth 114 passes through the installation groove 116 and the stator yoke 112 to form the stator core 110. At least one winding 120 is wound on at least one stator tooth 114.

[0176] Specifically, the linear stator segment 1122 is formed by stacking strip-shaped first laminations. In the strip-shaped lamination structure formed by splicing, the gap space of the yoke body 1124 on one third lamination is filled by the yoke body 1124 on another third lamination, which can maximize the reduction of waste material between the yoke bodies 1124 on the double-row laminations, thereby reducing material waste and product cost. The stator segment 1122 is formed by lamination stacking, and during the preparation of the stator yoke 112, the yoke shoulder 1126 of the stator segment 1122 needs to be bent to form a circular arc-shaped or circular ring-shaped or polygonal stator yoke 112. Specifically, the third lamination is a magnetic conducting sheet.

[0177] In this embodiment, the stator core 110 is formed by a separable stator yoke 112 and a plurality of stator teeth 114. By arranging the stator yoke 112 and the stator teeth 114 in a separable assembly structure, the assembly of the stator yoke 112 and the stator teeth 114 can be performed after the winding 120 of the stator tooth 114 is wound, which can simplify the winding process of the stator winding 120, improve the convenience of stator winding, and also facilitate the improvement of the filling rate of the winding slot, thereby improving the performance of the motor 100 prepared by the stator core 110.

[0178] In another aspect, the winding 120 is wound on the stator tooth 114. Further, the winding 120 is wound on the tooth body 1142 of the stator tooth 114 and located on the end surface of the stator yoke 112. The winding 120 can be one, two or more sets.

[0179] In this embodiment, after the winding 120 of the stator tooth 114 is wound, the stator tooth 114 can be arranged opposite to the linear stator segment 1122, and then the stator yoke 112 is bent, so that the complexity of the assembly process can be reduced.

[0180] The stator segment 1122 specifically includes a plurality of third punching sheets which are laminated along the axial direction of the stator core 110. On the one hand, this is beneficial to improve the magnetic conductivity of the stator core 110 and reduce the eddy current loss. On the other hand, this can be compatible with the existing manufacturing process of the radial stator core 110, greatly reducing the difficulty and cost of the core process of the axial magnetic flux motor 100.

[0181] Further, the mounting slot 116 on the arc-shaped or polygonal stator yoke 112 formed after the bending of the at least one stator segment 1122 is in communication with the inner circumferential surface of the stator yoke 112. Then, the stator tooth 114 can be inserted into the mounting slot 116 from the inner circumferential surface along the axial or radial direction to form a complete stator core 110.

[0182] Further, the mounting slot 116 is rectangular. In addition, the mounting slot 116 can also be trapezoidal or other shapes, as long as it can be fitted with the stator tooth 114.

[0183] Further, on the stator segment 1122, one end of the yoke shoulder 1126 is provided with a clamping slot, and the other end is provided with a clamping buckle. If the stator segment 1122 is one, a circular or polygonal stator yoke 112 is constructed by fitting the clamping slot with the clamping buckle. If the stator segment 1122 is multiple, the adjacent stator yoke 112 segments are connected end to end by fitting the clamping buckles and clamping slots of the adjacent stator yoke 112 segments to construct a circular or polygonal stator yoke 112.

[0184] If the stator segment 1122 is multiple, the multiple stator segments 1122 are fixed to each other by any one of welding, injection molding and an insulation frame.

[0185] Further, the stator tooth 114 specifically comprises a tooth body 1142, the tooth body 1142 comprises a plurality of first punching sheets, the plurality of first punching sheets are stacked along the radial or circumferential direction of the stator core 110, thereby improving the magnetic conductivity of the stator core 110. Specifically, the stacking direction of the first punching sheet can be radial or axial, and can be flexibly adjusted according to specific use scenarios and processing requirements. The first punching sheet is a magnetic conductive sheet.

[0186] Further, the stacking direction of the first punching sheet is perpendicular to the stacking direction of the third punching sheet. It can be understood that the stacking direction of the third punching sheet is preferably axial, and the stacking direction of the first punching sheet can be radial or circumferential. The stacking directions of the two kinds of magnetic conductive sheets are relatively independent, and the stacking direction can be flexibly selected according to the actual application scenario. By adopting the mutually perpendicular stacking directions between the first punching sheet and the third punching sheet, the magnetic conductivity of the stator core 110 is further improved.

[0187] Further, the stator tooth 114 further comprises a tooth shoe 1144, which is arranged at the end of the tooth body 1142, and the tooth shoe 1144 is detachably connected with the tooth body 1142.

[0188] The tooth shoe 1144 is arranged at the end of the tooth body 1142 and is detachably connected with the tooth body 1142. After the winding 120 is wound on the tooth body 1142, the tooth shoe 1144 is connected with the tooth body 1142 to fix the winding 120, prevent the winding 120 from being separated from the tooth body 1142, and further improve the assembly efficiency of the winding 120 and the tooth body 1142.

[0189] It should be noted that the materials of the tooth body 1142 and the tooth shoe 1144 can be the same or different.

[0190] Further, the tooth shoe 1144 is integrally formed with the tooth body 1142.

[0191] The tooth shoe 1144 is integrally formed with the tooth body 1142, which simplifies the structure of the product, makes the overall product better, and saves the connection step of the tooth shoe 1144 and the tooth body 1142, thereby further improving the assembly efficiency of the product.

[0192] Further, the number of tooth shoes 1144 is one, and the tooth shoe 1144 is arranged at one end of the tooth body 1142; or the number of tooth shoes 1144 is two, and one tooth shoe 1144 is arranged at each end of the tooth body 1142.

[0193] Further, the number of tooth shoes 1144 arranged on each tooth body 1142 can be adjusted according to actual requirements. Specifically, one tooth shoe 1144 can be arranged on one tooth body 1142, and two tooth shoes 1144 can be arranged on one tooth body 1142.

[0194] It should be noted that the two toothed shoes 1144 can be respectively arranged on the end faces of the tooth bodies 1142.

[0195] Further, the winding 120 is separated from the stator tooth 114 by the non-magnetic insulation layer.

[0196] Further, the non-magnetic insulation layer can be an independent insulation frame, or can be an insulation plastic package integrally injection molded with the stator tooth 114, or can be insulation slot paper.

[0197] Embodiment 20:

[0198] The third aspect of the present application provides a motor 100, comprising: at least one stator provided in any of the embodiments; and at least one rotor 130, the rotor 130 and the stator being correspondingly arranged.

[0199] The motor 100 provided by the present application comprises at least one stator provided in any of the embodiments, and therefore has all the beneficial effects of the stator provided in any of the embodiments, which will not be repeated here.

[0200] The rotor 130 comprises a rotor yoke 134 and a magnetic member 132, and the magnetic member 132 is arranged in front of the stator tooth 114.

[0201] Embodiment 21:

[0202] On the basis of embodiment 20, further, the number of stators can be set to be less than the number of rotors 130, and then any stator is located between adjacent rotors 130.

[0203] In this embodiment, the number of stators can be less than the number of rotors 130, and when the number of stators is less than the number of rotors 130, both sides of each stator are two rotors 130.

[0204] Embodiment 22:

[0205] On the basis of embodiment 20, further, the number of stators can be set to be greater than the number of rotors 130, and any rotor 130 is arranged between two adjacent stators.

[0206] In this embodiment, the number of stators can be greater than the number of rotors 130, and when the number of stators is greater than the number of rotors 130, both sides of each rotor 130 are two stators.

[0207] Embodiment 23:

[0208] On the basis of any of embodiments 20 to 22, further, the number of stators can be set to be multiple, wherein the number of stator teeth 114 of the multiple stators is the same.

[0209] Embodiment 24:

[0210] Further, on the basis of any one of Embodiments 20 to 22, the number of the stators can be set to be multiple, wherein the number of phases of the multiple stators are all the same.

[0211] Embodiment 25:

[0212] Further, on the basis of any one of Embodiments 20 to 22, the number of the stators can be set to be multiple, wherein the number of the stator teeth 114 of at least two of the multiple stators are different.

[0213] Embodiment 26:

[0214] Further, on the basis of any one of Embodiments 20 to 22, the number of the stators can be set to be multiple, wherein the number of phases of at least two of the multiple stators are different.

[0215] Embodiment 27:

[0216] Figure 14 A flow chart of the assembling method of the stator provided by one embodiment of the present application is shown.

[0217] As shown in the flow chart, the assembling method of the stator provided by one embodiment of the present application comprises the following steps: Figure 14

[0218] Step 1402: coating an insulating layer on the stator teeth;

[0219] Step 1404: arranging multiple stator teeth coated with the insulating layer according to a preset shape;

[0220] Step 1406: winding a wire on the multiple stator teeth to form a winding;

[0221] Step 1408: mounting the multiple stator teeth with the winding on a stator yoke.

[0222] The assembling method of the stator provided by the present application first coats an insulating layer on the stator teeth, then arranges multiple stator teeth according to a preset shape, i.e. matching the winding track of the winding machine, then winds a wire on the stator teeth coated with the insulating layer to form a winding, mounts the stator teeth with the winding on a stator yoke after the winding is completed, and obtains a stator. Further, since there is no interference of the stator yoke when winding the wire on the stator teeth, on the one hand, the winding process of the stator winding can be simplified, and the convenience of the stator winding is improved, on the other hand, it is also beneficial to improve the filling rate of the winding slot, thereby improving the performance of the motor prepared by the stator core.

[0223] Embodiment 28:

[0224] Figure 15 ​A flow chart showing the assembling method of the stator provided by another embodiment of the present application.

[0225] As shown in Figure 15 the flow steps of the assembling method of the stator provided by another embodiment of the present application are as follows:

[0226] Step 1502: coating an insulating layer on the stator teeth;

[0227] Step 1504: arranging the plurality of stator teeth coated with the insulating layer in a preset shape;

[0228] Step 1506: winding the conductive wire on the plurality of stator teeth to form the winding;

[0229] Step 1508: processing the plurality of stator segments of the stator yoke to form a ring structure;

[0230] Step 1510: arranging the plurality of stator teeth with the winding according to the distribution mode of the mounting slots on the stator yoke;

[0231] Step 1512: embedding the stator teeth arranged according to the distribution mode of the mounting slots into the mounting slots.

[0232] On the basis of Embodiment 25, further, the step of mounting the plurality of stator teeth with the winding on the stator yoke specifically comprises: first processing the plurality of stator segments into a ring structure of the stator yoke, arranging the plurality of stator teeth with the winding according to the positions of the mounting slots on the stator yoke, and embedding the plurality of stator teeth into the mounting slots to obtain the stator teeth.

[0233] Embodiment 29:

[0234] Figure 16 A flow chart showing the assembling method of the stator provided by another embodiment of the present application.

[0235] As shown in Figure 16 the flow steps of the assembling method of the stator provided by another embodiment of the present application are as follows:

[0236] Step 1602: coating an insulating layer on the stator teeth;

[0237] Step 1604: arranging the plurality of stator teeth coated with the insulating layer in a preset shape;

[0238] Step 1606: winding the conductive wire on the plurality of stator teeth to form the winding;

[0239] Step 1608: positioning the plurality of stator teeth with the winding and the plurality of stator segments of the stator yoke;

[0240] Step 1610: Bend multiple stator segments with positioning stator teeth to form a ring structure.

[0241] Based on Example 25, further, given that the stator yoke is an integral structure, the step of installing multiple stator teeth with windings onto the stator yoke specifically includes: positioning the multiple stator teeth with windings with multiple stator segments of a stator yoke, then bending the stator teeth and stator segments simultaneously to form a ring structure, thereby obtaining the stator yoke. Since the stator teeth and stator segments have been positioned, the stator is obtained at the same time as the stator yoke.

[0242] Example 30:

[0243] Figure 17 A flowchart illustrating a stator assembly method provided in another embodiment of the present invention is shown.

[0244] like Figure 17 As shown, the process steps of the stator assembly method provided in another embodiment of the present invention are as follows:

[0245] Step 1702: Cover the tooth body with an insulating layer;

[0246] Step 1704: Arrange multiple teeth covered with insulating layers in a preset shape;

[0247] Step 1706: Wind wires onto multiple tooth bodies to form a winding;

[0248] Step 1708: Install multiple tooth bodies with windings onto the stator yoke;

[0249] Step 1710: Install the toothed shoe onto the teeth of the stator yoke.

[0250] Based on any of Embodiments 25 to 27, further, when the stator teeth's tooth shoes and tooth bodies are detachable structures, the stator assembly method is as follows: Covering the stator teeth with an insulating layer; arranging multiple stator teeth covered with insulating layers in a predetermined shape; winding wires onto the multiple stator teeth to form windings; and installing the multiple stator teeth with windings onto the stator yoke, specifically:

[0251] First, an insulating layer is wrapped around the tooth body. Then, multiple tooth bodies are arranged in a predetermined shape, matching the winding trajectory of the winding machine. Next, wires are wound onto the insulating tooth bodies to form windings. After winding, the tooth bodies with windings are installed on the stator yoke, and then tooth shoes are installed on the tooth bodies to obtain the stator. This avoids interference from tooth shoes during winding, further reducing the difficulty of winding the stator core.

[0252] Example 31:

[0253] Figure 18 A flow chart of the assembling method of the stator provided by another embodiment of the present application is shown.

[0254] As shown in the flow chart of the assembling method of the stator provided by another embodiment of the present application, the steps are as follows: Figure 18

[0255] Step 1802: covering the stator teeth with an insulation layer;

[0256] Step 1804: arranging the stator teeth in a straight line with the interval distance corresponding to the mounting slots on the stator segments;

[0257] Step 1806: winding the winding on the stator teeth in a preset direction;

[0258] Step 1808: pre-positioning the stator teeth with the winding and arranged in a straight line with the stator segments, i.e. embedding the stator teeth into the mounting slots to contact the stator yoke;

[0259] Step 1810: bending the stator segments in a circumferential direction to form a polygonal or circular stator yoke, and driving the stator teeth to be distributed in a circumferential direction;

[0260] Step 1812: tooth body and tooth shoe in one piece;

[0261] Step 1814: tooth body and tooth shoe in separate pieces, and mounting the tooth shoe to the tooth body in the mounting slot.

[0262] Embodiment 32:

[0263] The flow of the assembling method of the stator provided by the present application can also be:

[0264] arranging and fixing the stator teeth covered with the insulation layer in a straight line;

[0265] winding the winding structure on the stator teeth in a preset direction;

[0266] pre-positioning the stator teeth with the winding and arranged in a straight line with the stator segments, i.e. embedding the stator teeth into the mounting slots and contacting the top end of the stator yoke;

[0267] bending the stator yoke segments in a circumferential direction to form a polygonal or circular stator yoke part, and driving the stator teeth to be distributed in a circumferential direction. Or

[0268] arranging and fixing the stator teeth covered with the insulation layer in a straight line;

[0269] winding the winding structure on the stator teeth in a preset direction;

[0270] bending the stator segments in a circumferential direction to form a polygonal or circular stator yoke;

[0271] ​The stator teeth which are wound and arranged in a straight line are pre-circumferentially arranged according to the distribution mode of the mounting slots;

[0272] The circumferentially arranged stator teeth are embedded into the mounting slots.

[0273] Further, the assembling method of the stator can further include mounting the toothed shoe to the stator teeth embedded into the mounting slots.

[0274] In the present application, the terms "first", "second", "third" are used only for the purpose of description, and should not be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integral connection; "connecting" can be direct connection, or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0275] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore, should not be understood as indicating or implying that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, and therefore, should not be understood as limiting the present application.

[0276] In the description of the present application, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0277] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A stator core for use in an axial motor, characterized in that, include: A stator yoke, the stator yoke including at least one stator segment, the at least one stator segment forming an annular structure, and a mounting groove formed on the stator yoke; Multiple stator teeth are detachably connected to the stator yoke, the stator teeth are mounted in the mounting slot, and the stator teeth extend out of the stator yoke from the axial end face of the stator yoke; The stator segmentation includes: Yoke; A shoulder is located on one side of the yoke body. Adjacent stator segments are connected by the yoke shoulder; The yoke body and yoke shoulder of two adjacent stator segments form the mounting groove; A third connecting part is provided on one side of the yoke shoulder, and a fourth connecting part is provided on the other side. In adjacent stator segments, the third connecting part on one stator segment is connected to the fourth connecting part on another stator segment. The third connecting part is a slot, and the fourth connecting part is a buckle, or the third connecting part is a tongue, and the fourth connecting part is a slot; The mounting groove is cross-sectioned in a direction perpendicular to the axis of the stator yoke. In the cross-section, the mounting groove is rectangular or trapezoidal, and the cross-section of the stator tooth is rectangular or trapezoidal.

2. The stator core according to claim 1, characterized in that, The mounting groove has an opening facing the inner ring of the stator yoke.

3. The stator core according to claim 1 or 2, characterized in that, The stator teeth include: The tooth body is connected to the stator yoke; A toothed boot is located at one end of the toothed body; or The stator teeth include: The tooth body is connected to the stator yoke; Two toothed boots are located at both ends of the toothed body.

4. The stator core according to claim 3, characterized in that, The toothed shoe and the toothed body are either detachable or integral structures.

5. The stator core according to claim 3, characterized in that, Since the toothed boot and the toothed body are detachable structures. The tooth body is provided with a first connecting part, and the tooth shoe is provided with a second connecting part. The tooth body and the tooth shoe are connected through the first connecting part and the second connecting part.

6. The stator core according to claim 5, characterized in that, Given that the toothed shoe and the toothed body are detachable structures, the toothed body includes: Multiple first laminations are stacked radially along the stator yoke to form the tooth body; Given that the toothed shoe and the toothed body are an integral structure, the stator tooth includes: Multiple second laminations are stacked radially along the stator yoke to form the stator teeth.

7. The stator core according to claim 1 or 2, characterized in that, When the number of stator lobes is multiple. The adjacent stator segments are welded together; or The adjacent stator segments are connected by injection molding; or The adjacent stator segments are connected by an insulating frame.

8. The stator core according to claim 1 or 2, characterized in that, When the number of stator lobes is multiple. The stator yoke is an integral structure, and multiple stator segments are bent into a ring structure by strip-shaped bending.

9. The stator core according to claim 1 or 2, characterized in that, The stator yoke includes: Multiple third laminations are stacked along the axial direction of the stator core to form the stator yoke.

10. A stator, characterized in that, include: Stator core as described in any one of claims 1 to 9; The winding is located on the stator core; An insulating layer is disposed between the stator core and the winding.

11. An electric motor, characterized in that, include: At least one stator as described in claim 10; At least one rotor, wherein the rotor and the stator are respectively arranged.

12. The motor according to claim 11, characterized in that, The number of stators is less than the number of rotors, and any one of the stators is disposed between adjacent rotors; or The number of stators is greater than the number of rotors, and any one of the rotors is located between two adjacent stators.

13. The motor according to claim 11 or 12, characterized in that, The number of stators is multiple, and the number of stator teeth in the multiple stators is the same; The number of stators is multiple, and the number of phases of the multiple stators is the same; or The number of stators is multiple, and at least two of the multiple stators have different numbers of stator teeth; The number of stators is multiple, and at least two of the multiple stators have different phase numbers.

14. A method for assembling a stator, characterized in that, For use in the stator as described in claim 10, comprising: An insulating layer is applied to the stator teeth; The stator teeth, which are covered with the insulating layer, are arranged in a preset shape; Wires are wound around the multiple stator teeth to form a winding; Multiple stator teeth with windings are mounted on the stator yoke.

15. The stator assembly method according to claim 14, characterized in that, The step of mounting the multiple stator teeth with windings onto the stator yoke specifically includes: The stator yoke is processed to form a ring structure by multiple stator segments; The plurality of stator teeth with windings are arranged according to the distribution pattern of the mounting slots on the stator yoke; The stator teeth, arranged according to the distribution pattern of the mounting slots, are embedded into the mounting slots.

16. The stator assembly method according to claim 14, characterized in that, Based on the case where the stator yoke is a one-piece structure: The step of mounting the plurality of stator teeth with windings onto the stator yoke specifically includes: Position the multiple stator teeth with windings and the multiple stator segments of the stator yoke; The stator segments, each with the stator teeth positioned thereon, are bent to form a ring structure.

17. The stator assembly method according to claim 14, characterized in that, Based on the condition that the stator tooth shoe and tooth body are detachable structures: The specific steps of coating the stator teeth with an insulating layer are as follows: The insulating layer is covered onto the tooth body; The step of arranging the multiple stator teeth covered with the insulating layer in a preset shape specifically involves: The multiple teeth covered with the insulating layer are arranged in a preset shape; The step of winding wires on the plurality of stator teeth to form a winding is specifically as follows: Wires are wound around the multiple teeth to form a winding; The step of mounting the multiple stator teeth with windings onto the stator yoke specifically includes: The toothed body, having the windings formed thereon, is mounted on the stator yoke; and The stator assembly method further includes: The toothed shoe is mounted on the tooth body that is installed on the stator yoke.

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