Stator Assembly and Motor

Abstract

The present invention provides a stator assembly and a motor. The stator assembly includes: a stator core, which includes: a stator yoke; and at least one stator tooth, each stator tooth is arranged along the axial direction of the stator yoke, and the stator tooth is detachably connected to the stator yoke; at least one winding wound around at least one stator tooth. Wherein, the stator yoke is provided with a stator yoke groove and / or a stator boss adapted to the shape of the stator tooth, and the stator tooth passes through the stator yoke groove and / or the stator boss to form the stator core. In this application, by detachably connecting each stator tooth to the stator yoke, thus, when winding the winding, it is not restricted by the shape of the stator core, the winding method is flexible, and the winding efficiency is improved. In addition, by reasonably arranging the size of the stator tooth or the spacing between the stator teeth to adjust the size of the winding groove, the number of winding sets can be flexibly set, so that the power level of the stator core can be reasonably adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular, to a stator assembly and a motor including the stator assembly. Background Art

[0002] Currently, when winding a motor in the prior art, since the size of the winding slot is relatively fixed, the power rating of the stator core is limited. Before each winding, the corresponding operating power has been set, which greatly affects the expansion of the product. At the same time, due to the relatively single winding method, the winding efficiency is also affected. Summary of the Invention

[0003] In order to solve at least one of the above technical problems, an object of the present invention is to provide a stator assembly.

[0004] Another object of the present invention is to provide a motor including the above stator assembly.

[0005] To achieve the above object, a technical solution of the first aspect of the present invention provides a stator assembly, including: a stator core, the stator core including: a stator yoke; and at least one stator tooth, each stator tooth being arranged along the axial direction of the stator yoke, and the stator tooth being detachably connected to the stator yoke; at least one winding wound around at least one of the stator teeth, wherein the stator yoke is provided with a stator yoke slot and / or a stator boss adapted to the shape of the stator tooth, and the stator tooth passes through the stator yoke slot and / or the stator boss to form the stator core.

[0006] The stator assembly provided by the technical solution of the first aspect of the present invention includes a stator core, and the stator core includes a stator yoke, at least one stator tooth and at least one winding, that is, the number of stator teeth and windings can be one or more. By arranging each stator tooth along the axial direction of the stator yoke and detachably connecting each stator tooth to the stator yoke, in this way, when winding the winding, it is not restricted by the shape of the stator core. Each stator tooth can be connected to the stator yoke after the winding is completed. The winding method is flexible, which improves the winding efficiency of the winding. In addition, by reasonably arranging the size of the stator teeth or the distance between the stator teeth to adjust the size of the winding slot, the number of winding sets can be flexibly set, so that the power rating of the stator core can be reasonably adjusted, solving the problem that the power rating of the stator core is limited due to the single size of the winding slot in the prior art; and when the stator tooth is assembled with the stator yoke, directly pass each stator tooth through the stator yoke slot adapted to its shape or snap the stator tooth onto the stator boss, or even pass a part of the plurality of stator teeth through the stator yoke slot and connect the remaining stator teeth to the stator boss. Any of the above methods can achieve the rapid assembly of the stator tooth and the stator yoke, effectively improving the assembly efficiency of the stator tooth and the stator yoke.

[0007] Among them, the materials of the stator teeth and the stator yoke are preferably magnetic conductive materials such as silicon steel sheets, soft magnetic materials or solid steel. Since they can all achieve the purpose of the present invention, they should all be within the protection scope of the present invention.

[0008] Among them, it should be noted that there can be multiple windings, and the shapes of the wire packages between the multiple windings can be the same or different.

[0009] In addition, the stator assembly in the above technical solution provided by the present invention may further have the following additional technical features:

[0010] In the above technical solution, the stator yoke specifically includes: a plurality of first magnetic conductive sheets, and the plurality of first magnetic conductive sheets are laminated along the radial or axial direction of the stator core.

[0011] The stator yoke specifically includes a plurality of first magnetic conductive sheets. By laminating the plurality of first magnetic conductive sheets along the radial or axial direction of the stator core to form the stator yoke, the magnetic conductivity of the stator core is improved. Specifically, the lamination direction of the first magnetic conductive sheets can be radial or axial, and can be flexibly adjusted according to the specific usage scenario and processing requirements.

[0012] In the above technical solution, the stator yoke slot axially penetrates at least one end face of the stator yoke.

[0013] The stator yoke slot can axially penetrate one end face of the stator yoke, or can axially penetrate both end faces of the stator yoke. That is, the stator teeth can be inserted into the stator yoke slot penetrating one end face of the stator yoke, or can be inserted into the stator yoke slot penetrating both end faces of the stator yoke, so that the connection method between the stator teeth and the stator yoke is diverse, and the assembly method of the winding is relatively flexible to meet different needs of users.

[0014] In the above technical solution, there is a distance between the stator yoke slot and the outer peripheral surface of the stator yoke in the radial direction, and there is a distance between the stator yoke slot and the inner peripheral surface of the stator yoke in the radial direction; or the stator yoke slot is communicated with the outer peripheral surface and / or the inner peripheral surface of the stator yoke.

[0015] There is a distance between the stator yoke slot and the outer peripheral surface of the stator yoke in the radial direction, that is, the stator yoke slot penetrates the stator yoke and is not communicated with the outer peripheral surface of the stator yoke. Then the stator teeth are inserted into the stator yoke slot along the axial direction of the stator yoke to be connected with the stator yoke, avoiding the stator teeth from separating from the stator yoke along the outer peripheral surface or the inner peripheral surface of the stator yoke in the stator yoke slot, and improving the connection reliability between the stator teeth and the stator yoke.

[0016] The stator yoke slots communicate with the outer peripheral surface or the inner peripheral surface of the stator yoke. Then, the stator teeth can be inserted into the stator yoke slots from the outer peripheral surface or the inner peripheral surface of the stator yoke. The connection method is flexible, facilitating the assembly between the stator teeth and the stator yoke.

[0017] The stator yoke slots communicate with both the outer peripheral surface and the inner peripheral surface of the stator yoke. Then, the stator teeth can be inserted into the stator yoke slots axially or radially from the outer peripheral surface to form a complete stator core.

[0018] In the above technical solution, the stator yoke specifically includes: a plurality of first magnetic conductive sheets, which are laminated radially or axially along the stator core; the stator teeth specifically include: a stator tooth body, which includes a plurality of second magnetic conductive sheets, and the plurality of second magnetic conductive sheets are laminated radially or circumferentially along the stator core.

[0019] The stator yoke specifically includes a plurality of first magnetic conductive sheets. By laminating the plurality of first magnetic conductive sheets radially or axially along the stator core to form the stator yoke, the magnetic conductivity of the stator core is improved. Specifically, the lamination direction of the first magnetic conductive sheets can be radial or axial, and can be flexibly adjusted according to the specific usage scenario and processing requirements.

[0020] The stator teeth specifically include a stator tooth body and a stator tooth shoe. The stator tooth body includes a plurality of second magnetic conductive sheets. By laminating the plurality of second magnetic conductive sheets radially or circumferentially along the stator core, the magnetic conductivity of the stator core is improved without affecting the normal use of the stator tooth body through the above lamination method.

[0021] It can be understood that the lamination direction of the first magnetic conductive sheets can be radial or axial, and the lamination direction of the second magnetic conductive sheets can be radial or circumferential. The settings of the lamination directions of the two types of magnetic conductive sheets are relatively independent, and the lamination directions can be flexibly selected according to the actual application scenario.

[0022] Specifically, both the first magnetic conductive sheets and the second magnetic conductive sheets can be laminated radially. It can also be that the first magnetic conductive sheets are radial and the second magnetic conductive sheets are circumferential, or the first magnetic conductive sheets are axial and the second magnetic conductive sheets are radial.

[0023] In the above technical solution, preferably, the lamination direction of the second magnetic conductive sheets is perpendicular to the lamination direction of the first magnetic conductive sheets.

[0024] By using a mutually perpendicular lamination direction between the first magnetic conductive sheets and the second magnetic conductive sheets, the magnetic conductivity of the stator core is further improved.

[0025] In the above technical solution, it further includes: a stator tooth shoe, which is arranged at the end of the stator tooth body, and the stator tooth shoe is detachably connected to the stator tooth body.

[0026] The stator tooth shoe is provided at the end of the stator tooth body and is detachably connected to the stator tooth body. After the winding is wound around the stator tooth body, the stator tooth shoe is then connected to the stator tooth body to fix the winding and prevent the winding from detaching from the stator tooth body, further improving the assembly efficiency of the winding and the stator tooth.

[0027] It should be noted that the materials of the stator tooth body and the stator tooth shoe can be the same or different.

[0028] In the above technical solution, the stator tooth shoe and the stator tooth body are integrally formed.

[0029] The integral formation of the stator tooth shoe and the stator tooth body simplifies the structure of the product, makes the integrity of the product better, and omits the connection step between the stator tooth shoe and the stator tooth body, further improving the assembly efficiency of the product.

[0030] In the above technical solution, the number of the stator tooth shoes is one, and the stator tooth shoe is provided at one end of the stator tooth body; or the number of the stator tooth shoes is two, and one stator tooth shoe is respectively provided at both ends of the stator tooth body.

[0031] In this technical solution, the number of stator tooth shoes provided on each stator tooth body can be adjusted according to actual needs. Specifically, one stator tooth shoe can be provided on one stator tooth body, and two stator tooth shoes can also be provided on one stator tooth body.

[0032] It should be noted that the two stator tooth shoes can be respectively provided on the end faces of the stator tooth body.

[0033] In the above technical solution, there are positioning grooves and positioning ribs with matching shapes. Among them, one of the positioning grooves and the positioning ribs is provided on the stator tooth, and the other is provided on the stator yoke groove and / or the stator boss to limit the position of the stator tooth in the stator yoke part.

[0034] By providing a positioning rib on the stator tooth, a positioning groove on the stator yoke groove or the stator boss, or positioning grooves on both the stator yoke groove and the stator boss, when the stator tooth is assembled with the stator yoke part, the positioning rib is inserted into the positioning groove to play a limiting role, thereby preventing relative movement between the stator tooth and the stator yoke groove, and further improving the connection stability between the stator tooth and the positioning yoke groove.

[0035] Similarly, a positioning groove can also be provided on the stator tooth, a positioning rib on the stator yoke groove or the stator boss, or positioning ribs on both the stator yoke groove and the stator boss. When the stator tooth is assembled with the stator yoke part, the positioning rib is inserted into the positioning groove to play a limiting role, thereby preventing relative movement between the stator tooth and the stator yoke part, and further improving the connection stability between the stator tooth and the positioning yoke part.

[0036] In the above technical solution, the stator assembly further includes: a mating groove and a mating rib that are adapted in shape, wherein one of the mating groove and the mating rib is provided on the stator tooth body, and the other is provided on the stator tooth boot, so as to realize the connection between the stator tooth boot and the stator tooth body through the cooperation of the mating groove and the mating rib.

[0037] By providing a mating rib on the stator tooth body and a mating groove on the stator tooth boot, when the stator tooth boot and the stator tooth body are assembled, the mating rib is directly inserted into the mating groove to limit the relative movement between the stator tooth boot and the stator tooth body, improving the assembly efficiency of the stator tooth boot and the stator tooth body and enhancing the connection stability between the stator tooth boot and the stator tooth body.

[0038] In the above technical solution, the number of the stator yoke slots is multiple, and the multiple stator yoke slots are evenly arranged on the stator yoke portion around the axis of the stator core.

[0039] The number of the stator yoke slots is multiple. By evenly arranging the multiple stator yoke slots on the stator yoke portion around the axis of the stator core, the structure of the product is more regular, and the number of the stator yoke slots is increased. Correspondingly, the number of the stator teeth is also multiple, and the multiple stator teeth are inserted into the corresponding multiple stator yoke slots, thereby increasing the number of windings and further contributing to improving the power rating of the stator core.

[0040] In the above technical solution, the cross-sectional area of the stator yoke portion is one of a circle, an ellipse, and a regular polygon.

[0041] The cross-sectional area of the stator yoke portion is one of a circle, an ellipse, and a regular polygon, and the structures are all relatively regular, facilitating processing and forming, suitable for mass production, and contributing to improving the aesthetics of the product.

[0042] In the above technical solution, the material of the stator yoke portion includes at least one of soft magnetic material and solid material; the material of the stator teeth includes at least one of soft magnetic material and solid material.

[0043] The materials of the stator yoke portion and the stator teeth can both be one or a combination of soft magnetic materials and solid materials. More specifically, the two structures can select at least one of silicon steel sheets made of solid steel and powders formed by soft magnetic materials. For example, the stator yoke portion uses silicon steel sheets and the stator teeth use soft magnetic powders, or the stator yoke portion uses soft magnetic powders and the stator yoke portion uses silicon steel sheets, or any other combination form.

[0044] The technical solution of the second aspect of the present invention provides a motor, including: at least one stator assembly according to any one of the technical solutions of the first aspect; at least one rotor, which is correspondingly arranged with the stator assembly.

[0045] The motor provided by the technical solution of the second aspect of the present invention includes the stator assembly described in any one of the technical solutions of the first aspect, and thus has all the beneficial effects of any of the above technical solutions, which will not be elaborated here.

[0046] It should be noted that the types of motors include but are not limited to single-stator double-rotor motors, single-rotor double-stator motors, double-stator double-rotor motors, and single-stator single-rotor motors. The number of stator assemblies and the number of rotors can both be one or more.

[0047] Among them, the rotor can be a permanent magnet rotor, a squirrel-cage rotor, or a salient-pole rotor. In particular, when the permanent magnet rotor is selected, the permanent magnet rotor can also be a radial flux rotor or an axial flux rotor. The magnetic structure of the permanent magnet rotor can be surface-mounted, embedded, or in the form of a Halbach array.

[0048] In the above technical solution, the number of the stator assemblies is the first number, the number of the rotors is the second number, the first number is less than the second number, and each stator assembly is arranged between any two adjacent rotors; or the first number is greater than the second number, and each rotor is arranged between any two adjacent stator assemblies.

[0049] Setting the number of stator assemblies as the first number and the number of rotors as the second number, with the first number less than the second number, that is, the number of stator assemblies is less than the number of rotors, and the stator assemblies are arranged between any two adjacent rotors. Any two adjacent rotors share one stator assembly, the structure is relatively regular, which helps to simplify the structure of the product and facilitates the assembly of the rotor and the stator assembly.

[0050] Alternatively, the number of stator assemblies is greater than the number of rotors, and each rotor is arranged between any two adjacent stator assemblies, that is, any two adjacent stator assemblies share one rotor, the structure is relatively regular, which helps to simplify the structure of the product and facilitates the assembly of the rotor and the stator assembly.

[0051] It can be understood that when the number of rotors is greater than the number of stator assemblies, in particular, when the second number is N + 1 and the first number is N, the N + 1 rotors can be arranged at intervals first, and then the N stator assemblies can be inserted between two adjacent rotors respectively to form a motor.

[0052] Alternatively, when the number of stator assemblies is greater than the number of rotors, in particular, when the second number is N and the first number is N + 1, the N + 1 stator assemblies can be arranged at intervals first, and then the N rotors can be inserted between two adjacent stator assemblies respectively to form a motor.

[0053] In the above technical solution, the number of the stator assemblies is at least two, and the number of stator teeth of at least two of the stator assemblies is the same, or the number of phases of at least two of the stator assemblies is the same.

[0054] The number of the stator assemblies is at least two, and the number of stator teeth of at least two of the stator assemblies is the same, which is convenient for the assembly of the stator teeth and the stator yoke, or the number of phases of at least two of the stator assemblies is the same, that is, the number of windings on each stator assembly is the same, so that the power rating on each stator assembly is the same.

[0055] In the above technical solution, the number of the stator assemblies is at least two, and the number of stator teeth of at least two of the stator assemblies is different, or the number of phases of at least two of the stator assemblies is different.

[0056] The number of the stator assemblies is at least two, and the number of stator teeth of at least two of the stator assemblies is different, or the number of phases of at least two of the stator assemblies is different, that is, the number of windings on each stator assembly is different. In this way, the user can reasonably wind each stator assembly to meet the need for actual power.

[0057] In the above technical solution, the number of the rotors is multiple, and the rotating shafts of at least two of the rotors are coaxial, parallel or perpendicular.

[0058] The number of the rotors is set to be multiple, and the rotating shafts of at least two of the rotors can be arranged coaxially or parallelly or perpendicularly. The setting methods are diverse and the installation method is relatively flexible.

[0059] Among them, the number of pole pairs of at least two of the rotors is different, or the number of pole pairs of at least two of the rotors is the same.

[0060] The number of the rotors is multiple, and at least two of the rotors can be set with the same number of pole pairs or different numbers of pole pairs to meet the needs of different working conditions.

[0061] The additional aspects and advantages of the present invention will become obvious in the following description part, or be understood through the practice of the present invention. Brief Description of the Drawings

[0062] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0063] Figure 1 is a schematic assembly structure diagram of the motor according to the first embodiment of the present invention;

[0064] Figure 2 is a schematic structure diagram of the stator yoke according to an embodiment of the present invention;

[0065] Figure 3It is a schematic structural diagram of a stator tooth according to an embodiment of the present invention;

[0066] Figure 4 It is a schematic assembly structure diagram of a motor according to the second embodiment of the present invention;

[0067] Figure 5 It is a schematic structural diagram of a stator yoke according to another embodiment of the present invention;

[0068] Figure 6 It is a schematic structural diagram of a stator tooth according to another embodiment of the present invention;

[0069] Figure 7 It is a schematic assembly structure diagram of a motor according to the second embodiment of the present invention;

[0070] Figure 8 It is a schematic assembly structure diagram of a motor according to the third embodiment of the present invention;

[0071] Figure 9 It is a schematic assembly structure diagram of a motor according to the fourth embodiment of the present invention;

[0072] Figure 10 It is Figure 9 a schematic structural diagram of the stator core of the shown motor;

[0073] Figure 11 It is a schematic assembly structure diagram of a motor according to the fifth embodiment of the present invention;

[0074] Figure 12 It is Figure 11 a schematic structural diagram of the stator yoke of the shown motor;

[0075] Figure 13 It is Figure 11 a schematic structural diagram of the stator tooth of the shown motor;

[0076] Figure 14 It is a schematic assembly structure diagram of a motor according to the sixth embodiment of the present invention;

[0077] Figure 15 It is Figure 14 a schematic structural diagram of the stator core of the shown motor;

[0078] Figure 16 It is a schematic assembly structure diagram of a stator tooth according to an embodiment of the present invention;

[0079] Figure 17 It is Figure 16 a schematic disassembly structure diagram of the shown stator tooth.

[0080] Among them, Figures 1 to 17 the corresponding relationship between the reference numerals in and the component names is:

[0081] 1 Stator core, 11 Stator yoke, 111 Stator yoke groove, 12 Stator tooth, 121 Stator tooth body, 1211 Fitting groove, 122 Stator tooth shoe, 1221 Fitting rib, 123 Positioning rib, 13 Second stator tooth, 131 Second stator tooth body, 132 Second stator tooth shoe, 2 Stator, 21 First winding, 22 Second winding, 31 First rotor, 311 First permanent magnet, 312 First rotor yoke, 32 Second rotor, 321 Second permanent magnet, 322 Second rotor yoke. Detailed implementation mode

[0082] In order to be able to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation modes. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0083] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0084] Next, refer to Figures 1 to 17 Describe the stator assembly and the motor according to some embodiments of the present invention.

[0085] As Figures 1 to 3 shown, the stator assembly provided by the embodiment of the first aspect of the present invention includes: a stator core 1, and the stator core 1 includes: a stator yoke 11, at least one stator tooth 12 and at least one winding; each stator tooth 12 is arranged along the axial direction of the stator yoke 11, and the stator tooth 12 is detachably connected to the stator yoke 11; at least one winding is wound around at least one stator tooth 12 and abuts against the stator yoke 11. Among them, the stator yoke 11 is provided with a stator yoke groove 111 and / or a stator boss adapted to the shape of the stator tooth 12, and the stator tooth 12 passes through the stator yoke groove 111 and / or the stator boss to form the stator core 1.

[0086] A stator assembly provided by an embodiment of the present invention includes a stator core 1, and the stator core 1 includes a stator yoke 11, at least one stator tooth 12, and at least one winding, that is, the number of stator teeth 12 and windings can be one or more. By arranging each stator tooth 12 along the axial direction of the stator yoke 11 and detachably connecting each stator tooth 12 to the stator yoke 11, thus, when winding the winding, it is not restricted by the shape of the stator core 1. Each stator tooth 12 can be connected to the stator yoke 11 after the winding is completed. The winding method is flexible, improving the winding efficiency of the winding. In addition, by reasonably arranging the size of the stator teeth 12 or the spacing between the stator teeth 12 to adjust the size of the winding slot, the number of winding sets can be flexibly set, enabling the power rating of the stator core 1 to be reasonably adjusted, solving the problem in the prior art that the power rating of the stator core 1 is limited due to the single size of the winding slot; and when the stator teeth 12 are assembled with the stator yoke 11, directly passing each stator tooth 12 through a stator yoke slot 111 adapted to its shape or inserting it into a stator boss adapted to it, or passing some stator teeth 12 through the stator yoke slot 111 and inserting the remaining stator teeth 12 into the stator boss, the rapid assembly of the stator teeth 12 and the stator yoke 11 can be realized, effectively improving the assembly efficiency of the stator teeth 12 and the stator yoke 11.

[0087] Regarding the materials of the stator teeth 12 and the stator yoke 11, preferably magnetic conductive materials such as silicon steel sheets, soft magnetic materials, or solid steel, since the objects of the present invention can be achieved, they should all be within the protection scope of the present invention.

[0088] The following combines some embodiments to describe in detail the specific structure of the stator assembly provided by the present application.

[0089] Embodiment 1

[0090] The stator yoke 11 specifically includes: a plurality of first magnetic conductive sheets, and the plurality of first magnetic conductive sheets are laminated along the radial or axial direction of the stator core 1, as Figure 2 shown.

[0091] The stator yoke 11 specifically includes a plurality of first magnetic conductive sheets. By laminating the plurality of first magnetic conductive sheets along the radial or axial direction of the stator core 1, the magnetic conductivity of the stator core 1 is improved.

[0092] Preferably, the stator yoke slot 111 axially penetrates at least one end face of the stator yoke 11.

[0093] That is, the stator yoke slot 111 can axially penetrate through one end face of the stator yoke 11, or can axially penetrate through both end faces of the stator yoke 11. That is, the stator teeth 12 can be inserted into the stator yoke slot 111 that penetrates through one end face of the stator yoke 11, or can be inserted into the stator yoke slot 111 that penetrates through both end faces of the stator yoke 11, so that the connection mode between the stator teeth 12 and the stator yoke 11 is diverse, and the assembly mode of the winding is relatively flexible to meet different needs of users.

[0094] Preferably, there is a spacing between the stator yoke slot 111 and the outer peripheral surface of the stator yoke 11 in the radial direction, and there is a spacing between the stator yoke slot 111 and the inner peripheral surface of the stator yoke 11 in the radial direction, as Figure 2 shown.

[0095] There is a spacing between the stator yoke slot 111 and the outer peripheral surface of the stator yoke 11 in the radial direction, that is, the stator yoke slot 111 penetrates through the stator yoke 11 and is not connected to the outer peripheral surface of the stator yoke 11. Then, the stator teeth 12 are inserted into the stator yoke slot 111 along the axis direction of the stator yoke 11 to be connected to the stator yoke 11, avoiding the stator teeth 12 from disengaging from the stator yoke 11 along the outer peripheral surface of the stator yoke 11 from the stator yoke slot 111, and improving the connection reliability between the stator teeth 12 and the stator yoke 11.

[0096] Optionally, the stator yoke slot 111 is simultaneously connected to the outer peripheral surface and the inner peripheral surface of the stator yoke. At this time, the stator teeth can be inserted into the stator yoke slot from the outer peripheral surface axially or radially to form a complete stator core.

[0097] Embodiment 2

[0098] The difference from Embodiment 1 is that: the stator yoke slot 111 is connected to the outer peripheral surface of the stator yoke 11, as Figure 12 shown.

[0099] The stator yoke slot 111 is connected to the outer peripheral surface of the stator yoke 11, then the stator teeth 12 can be inserted into the stator yoke slot 111 from the outer peripheral surface of the stator yoke 11, and the connection mode is flexible, which is convenient for the assembly between the stator teeth 12 and the stator yoke 11.

[0100] Among them, when adopting the stator yoke as shown in Figure 12 shown, two disc-shaped rotors can be provided on the same side of the stator yoke, and rotors can also be provided on the opposite sides of the stator yoke, that is, one rotor is provided on each side, which can be a disc-shaped rotor or a radial rotor.

[0101] Embodiment 3

[0102] The difference from Embodiment 2 is that: the stator yoke slot 111 is connected to the inner peripheral surface of the stator yoke 11, as Figure 5 shown.

[0103] The stator yoke slots 111 communicate with the inner circumferential surface of the stator yoke 11, so that the stator teeth 12 can be inserted into the stator yoke slots 111 from the inner circumferential surface of the stator yoke 11. The connection method is flexible, which is convenient for the assembly between the stator teeth 12 and the stator yoke 11.

[0104] Preferably, the stator teeth 12 specifically include: a stator tooth body 121, which includes a plurality of second magnetic conductive sheets, and the plurality of second magnetic conductive sheets are laminated along the radial or circumferential direction of the stator core 1; a stator tooth shoe 122, which is arranged at the end of the stator tooth body 121, and the stator tooth shoe 122 is detachably connected to the stator tooth body 121. Among them, the lamination direction of the second magnetic conductive sheets is perpendicular to the lamination direction of the first magnetic conductive sheets, as Figure 1 and Figure 3 shown.

[0105] The stator teeth 12 specifically include a stator tooth body 121 and a stator tooth shoe 122. The stator tooth body 121 includes a plurality of second magnetic conductive sheets. By laminating the plurality of second magnetic conductive sheets along the radial or circumferential direction of the stator core 1, the magnetic conductivity of the stator core 1 is further improved. The stator tooth shoe 122 is arranged at the end of the stator tooth body 121, and by being detachably connected to the stator tooth body 121, after the winding is wound around the stator tooth body 121, the stator tooth shoe 122 is then connected to the stator tooth body 121, which plays a role in fixing the winding, preventing the winding from detaching from the stator tooth body 121, and further improving the assembly efficiency of the winding and the stator teeth 12.

[0106] It should be noted that the materials of the stator tooth body and the stator tooth shoe can be the same or different.

[0107] Embodiment 4

[0108] The difference from any one of Embodiments 1 to 3 is that: the stator tooth shoe 122 and the stator tooth body 121 are integrally formed, as Figure 3 shown.

[0109] The stator tooth shoe 122 and the stator tooth body 121 are integrally formed, which simplifies the structure of the product, makes the integrity of the product better, and omits the connection step between the stator tooth shoe 122 and the stator tooth body 121, further improving the assembly efficiency of the product.

[0110] Preferably, the number of the stator tooth shoes 122 is one, and the stator tooth shoe 122 is arranged at one end of the stator tooth body 121, as Figure 1 and Figure 3 shown.

[0111] Embodiment 5

[0112] The difference from Embodiment 4 is that: the number of the stator tooth shoes 122 is two, and one stator tooth shoe 122 is respectively arranged at both ends of the stator tooth body 121, as Figure 4 shown.

[0113] Preferably, there are positioning grooves and positioning ribs 123 with matching shapes, where one of the positioning grooves and the positioning ribs 123 is provided on the stator teeth 12, and the other is provided on the stator yoke slots 111 and / or the stator bosses to limit the position of the stator teeth 12 in the stator yoke portion 11, as Figure 3 shown.

[0114] By providing positioning ribs 123 on the stator tooth body 121, positioning grooves on the stator yoke slots 111 or the stator bosses, or positioning grooves on both the stator yoke slots 111 and the stator bosses, when the stator teeth 12 are assembled with the stator yoke portion 11, the positioning ribs 123 are inserted into the positioning grooves to play a limiting role, thereby preventing relative movement between the stator teeth 12 and the stator yoke slots 111, and further improving the connection stability between the stator teeth 12 and the positioning yoke slots.

[0115] Similarly, positioning grooves can also be provided on the stator tooth body 121, positioning ribs 123 on the stator yoke slots 111 or the stator bosses, or positioning ribs 123 on both the stator yoke slots 111 and the stator bosses. When the stator teeth 12 are assembled with the stator yoke portion 11, the positioning ribs 123 are inserted into the positioning grooves to play a limiting role, thereby preventing relative movement between the stator teeth 12 and the stator yoke portion 11, and further improving the connection stability between the stator teeth 12 and the stator yoke portion 11.

[0116] Preferably, the stator assembly further includes: mating grooves 1211 and mating ribs 1221 with matching shapes, where one of the mating grooves 1211 and the mating ribs 1221 is provided on the stator tooth body 121, and the other is provided on the stator tooth shoe 122 to realize the connection between the stator tooth shoe 122 and the stator tooth body 121 through the cooperation of the mating grooves 1211 and the mating ribs 1221, as Figure 6 shown.

[0117] By providing mating ribs 1221 on the stator tooth body 121 and mating grooves 1211 on the stator tooth shoe 122, when the stator tooth shoe 122 is assembled with the stator tooth body 121, the mating ribs 1221 are directly inserted into the mating grooves 1211 to limit relative movement between the stator tooth shoe 122 and the stator tooth body 121, improving the assembly efficiency of the stator tooth shoe 122 and the stator tooth body 121 and the connection stability between the stator tooth shoe 122 and the stator tooth body 121.

[0118] Preferably, the number of stator yoke slots 111 is multiple, and the multiple stator yoke slots 111 are evenly arranged on the stator yoke portion 11 around the axis of the stator core 1, as Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 ,Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 as shown.

[0119] The number of stator yoke slots 111 is multiple. By arranging the multiple stator yoke slots 111 uniformly around the axis of the stator core 1 on the stator yoke portion 11, the structure of the product becomes more regular, and the number of stator yoke slots 111 is increased. Correspondingly, the number of stator teeth 12 is also multiple. The multiple stator teeth 12 are inserted into the corresponding multiple stator yoke slots 111, thereby increasing the number of windings and further helping to improve the power rating of the stator core 1.

[0120] Preferably, the cross-sectional area of the stator yoke portion 11 is one of a circle, an ellipse, and a regular polygon.

[0121] The cross-sectional area of the stator yoke portion 11 being one of a circle, an ellipse, and a regular polygon has a relatively regular structure, which is convenient for machining and forming, suitable for mass production, and helps to improve the aesthetics of the product.

[0122] Among them, in another embodiment, as Figure 16 and Figure 17 shown, the stator tooth body 121 is in a straight tooth shape. A positioning rib 123 is provided on the stator tooth body 121. The stator tooth body 121 does not have a mating rib or a mating groove for mating with the stator tooth shoe 122. The stator tooth shoe 122 is directly sleeved on one end of the stator tooth body 121, and the mating position is limited to the degree of parallelism of their upper end faces.

[0123] Another embodiment of the present invention provides a motor, including: at least one stator assembly according to any one of the above embodiments; at least one rotor, corresponding to the stator assembly.

[0124] The motor provided by the embodiment of the second aspect of the present invention includes at least one stator assembly according to any one of the embodiments of the first aspect and a rotor corresponding to the stator assembly, and thus has all the beneficial effects of any one of the above embodiments, which will not be elaborated here.

[0125] Preferably, the number of stator assemblies is the first number, the number of rotors is the second number, the first number is less than the second number, and each stator assembly is arranged between any two adjacent rotors; the first number is greater than the second number, and each rotor is arranged between any two adjacent stator assemblies.

[0126] Set the number of stator assemblies to a first number and the number of rotors to a second number, where the first number is less than the second number, that is, the number of stator assemblies is less than the number of rotors, and the stator assemblies are arranged between any two adjacent rotors. Any two adjacent rotors share a stator assembly. The structure is relatively regular, which helps to simplify the structure of the product and facilitates the assembly of the rotors and stator assemblies.

[0127] Alternatively, the number of stator assemblies is greater than the number of rotors. Each rotor is arranged between any two adjacent stator assemblies, that is, any two adjacent stator assemblies share a rotor. Similarly, the structure is relatively regular, which helps to simplify the structure of the product and facilitates the assembly of the rotors and stator assemblies.

[0128] Preferably, the number of stator assemblies is at least two, and the number of stator teeth of at least two stator assemblies is the same, or the number of phases of at least two stator assemblies is the same.

[0129] The number of stator assemblies is at least two, and the number of stator teeth of at least two stator assemblies is the same, which facilitates the assembly of the stator teeth and the stator yoke, or the number of phases of at least two stator assemblies is the same, that is, the number of windings on each stator assembly is the same, so that the power rating on each stator assembly is the same.

[0130] Optionally, the number of stator assemblies is at least two, and the number of stator teeth of at least two stator assemblies is the same, or the number of phases of at least two stator assemblies is different.

[0131] The number of stator assemblies is at least two, and the number of stator teeth of at least two stator assemblies is different, or the number of phases of at least two stator assemblies is different, that is, the number of windings on each stator assembly is different. In this way, users can reasonably wind each stator assembly to meet the need for actual power.

[0132] Preferably, the number of rotors is multiple, and the rotating shafts of at least two rotors are coaxial, parallel or perpendicular.

[0133] Set the number of rotors to be multiple. The rotating shafts of at least two rotors can be arranged coaxially, parallelly or perpendicularly. The setting methods are diverse and the installation methods are relatively flexible.

[0134] Optionally, the number of rotors is multiple, and the number of pole pairs of at least two rotors is the same, or the number of pole pairs of at least two rotors is different.

[0135] The number of rotors is multiple. At least two rotors can be set with the same number of pole pairs or different numbers of pole pairs to meet the needs of different working conditions.

[0136] The following combines some specific embodiments to describe in detail the specific structures of the stator assembly and the motor provided by this application.

[0137] Embodiment 1

[0138] As shown in Figure 1 , the present invention provides a single-stator single-rotor motor. The single-stator single-rotor motor includes a stator assembly and a first rotor 31. The stator assembly includes: a stator core 1, and the stator core 1 includes: a stator yoke 11; and at least one stator tooth 12. Each stator tooth 12 is arranged along the axial direction of the stator yoke 11, and the stator tooth 12 is detachably connected to the stator yoke 11; a first winding 21 wound around at least one stator tooth 12 and abutting against the stator yoke 11. Wherein, the stator yoke 11 is provided with a stator yoke slot 111 adapted to the shape of the stator tooth 12, and the stator tooth passes through the stator yoke slot 111 to form the stator core 1; the first rotor 31 includes a first permanent magnet 311 and a first rotor yoke 312, which are correspondingly arranged with the stator assembly.

[0139] Embodiment 2

[0140] The difference from Embodiment 1 is that: the embodiment of the present invention provides a double-stator double-rotor motor, including a stator assembly, a first rotor 31 and a second rotor 32. The stator assembly includes: a stator core and the first rotor 31 and the second rotor 32 located on both sides of the stator core. The stator core includes a stator yoke, a plurality of stator teeth and a plurality of second stator teeth 13 (including a second stator tooth body 131 and a second stator tooth boot 132). The stator yoke is provided with a stator yoke slot. The plurality of stator teeth and the plurality of second stator teeth 13 are asymmetrically arranged on both sides of the stator yoke, and the plurality of stator teeth and the plurality of second stator teeth 13 are respectively inserted into the stator yoke slot to form the stator core; a first winding 21 and a second winding 22 are respectively wound around the plurality of stator teeth and the plurality of second stator teeth 13; the first rotor 31 (including a first permanent magnet 311 and a first rotor yoke 312) and the second rotor 32 (including a second permanent magnet 321 and a second rotor yoke 322) are respectively correspondingly arranged with the stator assembly, as Figure 7 shown.

[0141] Embodiment 3

[0142] The difference from Embodiment 1 and Embodiment 2 is that: this embodiment provides a double-stator single-rotor motor, including a stator assembly and a first rotor 31. The stator assembly includes a first stator core and a second stator core, and the first stator core and the second stator core are symmetrically distributed on both sides of the first rotor 31, as Figure 8 shown.

[0143] Embodiment 4

[0144] The difference from Embodiment 3 is that: this embodiment provides a single-stator double-rotor motor, as Figure 9As shown, it includes a stator assembly, a first rotor 31 and a second rotor 32. The stator assembly includes a stator core 1, and the two rotors (i.e., the first rotor 31 and the second rotor 32) are respectively arranged on both sides of the stator core 1. Among them, the stator core 1 is as Figure 10 shown, including a stator yoke 11 and a plurality of stator teeth 12 passing through the stator yoke 11 and capable of winding windings on both sides. Each stator tooth includes a stator tooth body 121 and stator tooth shoes 122 arranged at both ends of the stator tooth body.

[0145] Embodiment 5

[0146] The difference from Embodiment 4 is that: as Figure 11 shown, this embodiment provides a single-stator dual-rotor motor, including a stator assembly and two rotors (i.e., the first rotor 31 and the second rotor 32). The stator assembly includes a plurality of stator teeth 12 and two second stator teeth 13 (including a second stator tooth body 131 and second stator tooth shoes 132). As Figure 13 shown, the two second stator teeth 13 are combined to form a U shape, and the second rotor 32 is arranged between the two second stator teeth 13.

[0147] Among them, as Figure 12 shown, two types of stator yoke slots 111 are formed on the stator yoke 11. One type communicates with the outer peripheral surface of the stator yoke 11, and the other type communicates with the inner peripheral surface of the stator yoke 11.

[0148] Embodiment 6

[0149] The difference from Embodiment 5 is that: the single-stator single-rotor motor provided by the present invention, as Figure 14 and Figure 15 shown, includes a stator assembly and a first rotor 31. The first rotor 31 includes a first permanent magnet 311 and a first rotor yoke 312. The stator assembly includes a plurality of stator teeth 12, a stator yoke 11 and a plurality of windings 21. The plurality of stator teeth 12 are in a spoon shape and define an accommodation space for arranging the first rotor 31. The stator yoke 11 is circular. The plurality of stator teeth 12 are arranged along the circumferential direction of the stator yoke 11. The plurality of windings 21 are correspondingly wound on the plurality of stator teeth 12. The first rotor 31 is arranged in the accommodation cavity.

[0150] In summary, for the stator assembly provided by the present invention, each stator tooth is arranged along the axial direction of the stator yoke, and each stator tooth is detachably connected to the stator yoke. In this way, when winding the windings, it is not restricted by the shape of the stator core. Each stator tooth can be connected to the stator yoke after the winding is completed, and the winding method is flexible, improving the winding efficiency of the windings. In addition, by reasonably arranging the size of the stator teeth or the spacing between the stator teeth to adjust the size of the winding slots, the number of winding sets can be flexibly set, enabling the power rating of the stator core to be reasonably adjusted, and solving the problem in the prior art that the power rating of the stator core is limited due to the single size of the winding slots.

[0151] In the present invention, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plural" means two or more unless otherwise clearly defined. Terms such as "mounted", "connected", "connected to", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0152] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0153] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0154] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stator assembly, characterized in that, it includes: a stator core, the stator core includes: a stator yoke; and at least one stator tooth, each stator tooth is arranged along the axial direction of the stator yoke, and the stator tooth is detachably connected to the stator yoke; at least one winding wound around at least one of the stator teeth, wherein, the stator yoke is provided with a stator yoke groove and / or a stator boss adapted to the shape of the stator tooth, and the stator tooth passes through the stator yoke groove and / or the stator boss to form the stator core; the stator tooth includes a stator tooth body and a stator tooth shoe, the stator tooth shoe is arranged at the end of the stator tooth body, and the stator tooth shoe is detachably connected to the stator tooth body. After the winding is wound around the stator tooth body, the stator tooth shoe is then connected to the stator tooth body; the stator tooth further includes a mating groove and a mating rib with a matching shape. Among them, one of the mating groove and the mating rib is arranged on the stator tooth body, and the other is arranged on the stator tooth shoe to realize the connection between the stator tooth shoe and the stator tooth body through the cooperation of the mating groove and the mating rib.

2. The stator assembly according to claim 1, characterized in that, the stator yoke specifically includes: a plurality of first magnetic conductive sheets, and the plurality of first magnetic conductive sheets are laminated along the radial or axial direction of the stator core.

3. The stator assembly according to claim 1, characterized in that, the stator yoke groove axially penetrates at least one end face of the stator yoke.

4. The stator assembly according to claim 1, characterized in that, there is a gap between the stator yoke groove and the outer peripheral surface of the stator yoke in the radial direction, and there is a gap between the stator yoke groove and the inner peripheral surface of the stator yoke in the radial direction; or the stator yoke groove is communicated with the outer peripheral surface and / or the inner peripheral surface of the stator yoke.

5. The stator assembly according to claim 1, characterized in that, the stator boss extends radially outward from the outer peripheral surface of the stator yoke; and / or the stator boss extends radially inward from the inner peripheral surface of the stator yoke.

6. The stator assembly according to claim 1, characterized in that, the stator yoke specifically includes: a plurality of first magnetic conductive sheets, and the plurality of first magnetic conductive sheets are laminated along the radial or axial direction of the stator core; the stator tooth body includes a plurality of second magnetic conductive sheets, and the plurality of second magnetic conductive sheets are laminated along the radial or circumferential direction of the stator core.

7. The stator assembly according to claim 6, characterized in that, the lamination direction of the second magnetic conductive sheets is perpendicular to the lamination direction of the first magnetic conductive sheets.

8. The stator assembly according to claim 6, characterized in that, the stator tooth shoe and the stator tooth body are integrally formed.

9. The stator assembly according to claim 6, characterized in that, the number of the stator tooth shoes is one, and the stator tooth shoe is arranged at one end of the stator tooth body; or the number of the stator tooth shoes is two, and one stator tooth shoe is arranged at each end of the stator tooth body.

10. The stator assembly according to claim 1, characterized in that, it further includes: Positioning grooves and positioning ribs that are adapted in shape, wherein one of the positioning grooves and the positioning ribs is provided on the outer side of the stator teeth, and the other is provided on the stator yoke slots and / or the stator bosses to limit the position of the stator teeth in the stator yoke portion.

11. The stator assembly according to claim 1, wherein, the number of the stator yoke slots and / or the stator bosses is multiple, and the multiple stator yoke slots and / or the stator bosses are uniformly arranged on the stator yoke portion around the axis of the stator core.

12. The stator assembly according to claim 1, wherein, the cross-sectional area of the stator yoke portion is one of a circle, an ellipse, and a regular polygon.

13. The stator assembly according to claim 1, wherein, the material of the stator yoke portion includes at least one of soft magnetic material or solid steel; the material of the stator teeth includes at least one of soft magnetic material or solid steel.

14. A motor, wherein, it includes: at least one stator assembly according to any one of claims 1 to 13; at least one rotor, and each rotor is correspondingly arranged with the stator assembly.

15. The motor according to claim 14, wherein, the number of the stator assemblies is a first number, the number of the rotors is a second number, the first number is less than the second number, and each stator assembly is arranged between any two adjacent rotors; the first number is greater than the second number, and each rotor is arranged between any two adjacent stator assemblies.

16. The motor according to claim 14, wherein, the number of the stator assemblies is at least two, and the number of the stator teeth of at least two stator assemblies is the same, or the number of phases of at least two stator assemblies is the same; or the number of the stator assemblies is at least two, and the number of the stator teeth of at least two stator assemblies is different, or the number of phases of at least two stator assemblies is different.

17. The motor according to claim 14, wherein, the number of the rotors is multiple, and the rotating shafts of at least two rotors are coaxial, parallel, or perpendicular.

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