Stator assembly, motor and vehicle

Abstract

The utility model discloses a stator assembly, a motor and a vehicle. The stator assembly comprises an iron core part, a cover plate and a plurality of tooth boots. The iron core part comprises a plurality of iron cores and a plurality of coils, the iron cores are arranged at intervals in the circumferential direction of the stator assembly, and the coils are arranged on the iron cores respectively. The number of the cover plates is two, the two cover plates are arranged on the two opposite sides of the iron core part in the axial direction of the stator assembly respectively, a plurality of installation holes and a plurality of installation grooves are formed in the cover plates, and the installation holes correspond to the iron cores in a one-to-one mode and are used for fixing the iron cores. The plurality of tooth boots are respectively arranged in the plurality of mounting grooves, and the tooth boots correspond to the opening grooves between the two adjacent iron cores in the axial direction. According to the invention, the arrangement of the tooth boots can reduce the opening size of the open slot between the two adjacent iron cores, thereby reducing the leakage reactance of the slot and the tooth harmonic of the gap flux density, improving the torque pulsation of the motor, and improving the operation stability of the motor.

Description

Technical Field

[0001] This application relates to the field of drive equipment technology, and more specifically, to a stator assembly, a motor, and a vehicle. Background Technology

[0002] Axial flux motors, also known as disc motors or flat motors, are widely used in vehicles (such as new energy vehicles and electric motorcycles) due to their advantages of high power density, high torque density, and compact structure. In related technologies, axial flux motors include a stator assembly and a rotor assembly, with the rotor assembly capable of rotating relative to the stator assembly. The stator assembly comprises multiple iron cores and coils wound around each core. Generally, to facilitate coil mounting on the iron cores, the stator cores formed by multiple iron cores are typically open-slot structures. However, the open-slot structure can adversely affect motor pulsation, leading to decreased motor operational stability. Utility Model Content

[0003] This application provides a stator assembly, a motor, and a vehicle.

[0004] The stator assembly of this application includes a core component, a cover plate, and multiple toothed shoes. The core component includes multiple cores and multiple coils, with the cores arranged at intervals along the circumference of the stator assembly, and the coils respectively disposed on the cores. Two cover plates are provided, each disposed on opposite sides of the core component along the axial direction of the stator assembly. Each cover plate has multiple mounting holes and multiple mounting slots, with each mounting hole corresponding to a core and used to fix the core. Multiple toothed shoes are respectively disposed in the mounting slots, and each toothed shoe corresponds axially to an opening between two adjacent cores.

[0005] In some embodiments, each of the mounting holes has mounting grooves on opposite sides in the circumferential direction.

[0006] In some embodiments, adjacent mounting slots are symmetrically arranged in the circumferential direction of the stator assembly.

[0007] In some embodiments, adjacent mounting slots are asymmetrically arranged in the circumferential direction of the stator assembly.

[0008] In some embodiments, the toothed boot is made of a soft magnetic composite material.

[0009] In some embodiments, the mounting groove is spaced apart from the mounting hole.

[0010] In some embodiments, the mounting groove communicates with the mounting hole, and when the toothed shoe is disposed in the mounting groove, the toothed shoe abuts against the iron core.

[0011] In some embodiments, the cross-sectional size of the mounting hole gradually increases in the direction from the cover plate to the core component.

[0012] In some embodiments, the projection of the toothed shoe onto a plane perpendicular to the axial direction is located within the projection of the opening slot between two adjacent iron cores onto a plane perpendicular to the axial direction.

[0013] In some embodiments, the projection of the toothed shoe onto a plane perpendicular to the axial direction completely coincides with the projection of the opening slot between two adjacent iron cores onto a plane perpendicular to the axial direction.

[0014] In some embodiments, the cross-section of the toothed shoe is the same as the cross-section of the mounting groove.

[0015] In some embodiments, the cross-section of the toothed shoe is smaller than the cross-section of the mounting groove.

[0016] The motor in this application includes the stator assembly described in any of the above embodiments.

[0017] In some embodiments, the motor further includes a rotor assembly that cooperates with the stator assembly and is movable relative to the stator assembly.

[0018] The vehicle described in this application includes the motor described in any of the above embodiments.

[0019] In the stator assembly, motor, and vehicle of this application embodiment, a plurality of mounting slots are provided on the cover plate, and a plurality of toothed shoes are respectively disposed in the mounting slots. The toothed shoes correspond axially to the opening slots between two adjacent iron cores. Thus, the toothed shoes can reduce the opening size of the opening slots between two adjacent iron cores. That is, the toothed shoes can reduce the axial opening size of the opening slots between two adjacent iron cores. This not only reduces the leakage flux of the stator assembly magnetic field (the magnetic field generated by the coil energization) and reduces the slot leakage reactance, but also makes the air gap magnetic flux distribution more uniform, reduces the tooth harmonics of the air gap magnetic flux, and thus improves the torque pulsation of the motor and enhances the stability of motor operation.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0022] Figure 1This is a structural schematic diagram of a vehicle according to certain embodiments of this application;

[0023] Figure 2 yes Figure 1 A three-dimensional structural diagram of the stator assembly of the motor in the vehicle shown.

[0024] Figure 3 yes Figure 2 A three-dimensional structural diagram of a portion of the core component in the stator assembly shown;

[0025] Figure 4 yes Figure 2 A schematic diagram of one embodiment of the cover plate of the core component in the stator assembly shown;

[0026] Figure 5 yes Figure 2 A schematic diagram of another embodiment of the cover plate of the core component in the stator assembly shown.

[0027] Explanation of key component symbols:

[0028] 1000 vehicles;

[0029] 100 motor; 200 body; 300 wheels;

[0030] 10 stator assemblies; 30 rotor assemblies;

[0031] 11 Iron core components, 111 Iron core, 1101 Opening slot, 113 Coil, 101 First side, 103 Second side; 13 Cover plate, 131 Mounting hole, 133 Mounting slot; 15 Toothed shoe. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] Please see Figure 1 The vehicle 1000 in this embodiment includes a motor 100. The vehicle 1000 includes, but is not limited to, pure electric vehicles, hybrid vehicles, and other passenger vehicles, or large engineering vehicles operating under relatively mild conditions.

[0038] Furthermore, in some embodiments, the vehicle 1000 further includes a body 200 and wheels 300, the wheels 300 being disposed on the body 200 and capable of moving relative to the body 200. The motor 100 may be an axial flux motor. Exemplarily, the axial flux motor can drive the wheels 300 to move relative to the body 200, thereby realizing the movement of the vehicle 1000 (including but not limited to forward, reverse, or turning). It is understood that in other embodiments, the motor 100 may also be a linear motor or a bidirectional motor, etc.

[0039] Since the vehicle 1000 in this embodiment includes a motor 100, it is understood that the vehicle 1000 has at least the same beneficial effects as the motor 100. Therefore, for the beneficial effects of the vehicle 1000, please refer to the beneficial effects of the motor 100 described below.

[0040] Please continue reading. Figure 1 The motor 100 of this embodiment includes a stator assembly 10. Since the motor 100 in this embodiment includes a stator assembly 10, it is understood that the motor 100 has at least the same beneficial effects as the stator assembly 10. Therefore, for the beneficial effects of the motor 100, please refer to the beneficial effects of the stator assembly 10 described below.

[0041] Furthermore, in some embodiments, the motor 100 further includes a rotor assembly 30, which cooperates with the stator assembly 10 and is movable relative to the stator assembly 10. For example, when the motor 100 is an axial flux motor, the rotor assembly 30 may be disposed at opposite ends of the stator assembly 10 in the axial direction X of the stator assembly 10 (in this case, the motor 100 is a dual-rotor single-stator motor), and the rotor assembly 30 is rotatable relative to the stator assembly 10.

[0042] In some embodiments of this application, the stator assembly 10 and the rotor assembly 30 may be aligned along the left-right direction of the vehicle 1000. Figure 1 (As shown). This allows for a more flexible layout of the motor 100 on the vehicle 1000, facilitating the compact arrangement of other structural components. For example, when the motor 100 is connected to the wheel 300, the stator assembly 10 and rotor assembly 30 of the motor 100 are distributed in the left-right direction, allowing for a more flexible layout of the motor 100 on the vehicle 1000. For instance, the motor 100 can be mounted on the wheel rim or in the wheel hub, thereby reducing the space occupied by the motor 100 and facilitating the arrangement of other structural components of the vehicle 1000.

[0043] Please see Figure 2 and Figure 3 and combined Figure 4 and Figure 5 The stator assembly 10 of this embodiment includes a core component 11, a cover plate 13, and a plurality of toothed shoes 15. The core component 11 includes a plurality of cores 111 and a plurality of coils 113. The cores 111 are arranged at intervals along the circumference of the stator assembly 10, and the coils 113 are respectively disposed on the cores 111. Two cover plates 13 are provided, respectively disposed on opposite sides of the core component 11 in the axial direction X of the stator assembly 10. Each cover plate 13 has a plurality of mounting holes 131 and a plurality of mounting grooves 133. The mounting holes 131 correspond one-to-one with the cores 111 and are used to fix the cores 111. The plurality of toothed shoes 15 are respectively disposed in the plurality of mounting grooves 133, and the toothed shoes 15 correspond in the axial direction X to the opening grooves 1101 between two adjacent cores 111. It should be noted that the opposite sides of the core component 11 in the axial direction X of the stator assembly 10 can be... Figure 3The first side 101 and the second side 103 are shown in the figure. The two cover plates 13 can be respectively disposed on the first side 101 and the second side 103 of the core component 11, that is, the core component 11 is disposed between the two cover plates 13, thereby improving the structural stability of the stator assembly 10.

[0044] The iron core 111 is a structure used to form the magnetic flux circuit of the motor 100 and to load the coil 113. The iron core 111 can be made of materials such as silicon steel sheets or soft magnetic composite materials (SMC). Soft magnetic composite materials are composite materials with soft magnetic functions, formed by combining soft magnetic ferrite and a polymer matrix (such as thermosetting or thermoplastic polymers), and are characterized by high efficiency and low energy consumption. In one example, the iron core 111 can be formed by stacking multiple silicon steel sheets; or, the iron core 111 can be formed by winding silicon steel sheets. In another example, the iron core 111 can be formed by a single piece of iron core 111. In some embodiments of this application, multiple iron cores 111 are evenly spaced along the circumference of the stator assembly 10. It is understood that in some embodiments, multiple iron cores 111 are of the same size and shape, which facilitates the processing and manufacturing of the iron core 111 and reduces production costs. The cross-sectional shape of the iron core 111 includes, but is not limited to, square, sector, and isosceles trapezoid.

[0045] Coil 113 is a structure made of insulated wire. The wire may be made of at least one of copper, aluminum, and silver. In some embodiments of this application, when coil 113 is energized, coil 113 can generate a magnetic field, which can interact with rotor assembly 30 to cause rotor assembly 30 to move relative to stator assembly 10.

[0046] For example, the rotor assembly 30 includes a magnetic element that engages with a coil 113 to enable the rotor assembly 30 to move relative to the stator assembly 10. Specifically, the magnetic element is positioned opposite the coil 113. When the coil 113 is energized, the magnetic field generated by the coil 113 interacts with the magnetic field generated by the magnetic element, causing the rotor assembly 30 to rotate relative to the stator assembly 10, thereby driving the load to move. It should be noted that in some embodiments, the magnetic element may include, but is not limited to, magnets or ferromagnetic minerals.

[0047] The cover plate 13 is a structure for mounting devices such as the core component 11. The cross-section of the cover plate 13 is substantially the same as the cross-section of the core component 11. For example, when multiple cores 111 are arranged circumferentially at intervals and together form a ring-shaped stator core, the cross-sectional shape of the cover plate 13 is also substantially annular. In some embodiments of this application, the cover plate 13 includes an outer and an inner side facing each other in the axial direction X, with the inner side of the cover plate 13 opposite to the core component 11, and a mounting hole 131 penetrating both the outer and inner sides of the cover plate 13. The cross-section of the mounting hole 131 is substantially the same as the cross-section of the core 111. For example, when the cross-section of the core 111 is fan-shaped, the cross-section of the mounting hole 131 is also fan-shaped, thus ensuring that the core 111 can be fixed within the mounting hole 131. When the core component 11 and the cover plate 13 are assembled, the end of the core 111 in the axial direction X is flush with the outer side of the cover plate 13.

[0048] Furthermore, in some embodiments, the cross-sectional size of the mounting hole 131 gradually increases in the direction from the cover plate 13 to the core component 11. That is, the mounting hole 131 is constructed as a wedge-shaped structure, which can guide and position the core 111 during installation in the mounting hole 131, thereby improving the assembly efficiency of the stator assembly 10.

[0049] It should be noted that in some embodiments, the cover plate 13 may be made of plastic, thus allowing it to be integrally injection molded, simplifying the process. For example, the cover plate 13, mounting hole 131, and mounting groove 133 may be integrally injection molded; or, the cover plate 13 and mounting hole 131 may be injection molded, with the mounting groove 133 subsequently machined onto the cover plate 13. In this case, the two cover plates 13 have the same shape and size, which facilitates the processing and manufacturing of the cover plate 13 and reduces production costs. Of course, it is understood that the cover plate 13 may also be made of other materials, which will not be listed here.

[0050] The toothed shoe 15 can be installed in the mounting groove 133 by means of bonding or snap-fit, which makes installation more convenient and assembly more efficient. For example, an adhesive layer can be provided in the mounting groove 133, and the toothed shoe 15 can be installed in the mounting groove 133 through the adhesive layer. The quantity relationship between the toothed shoe 15 and the mounting groove 133 can be one-to-one, that is, one toothed shoe 15 corresponds to one mounting groove 133. In some embodiments of this application, the mounting groove 133 is recessed from the outer side of the cover plate 13 toward the inner side of the cover plate 13; or, the mounting groove 133 is recessed from the inner side of the cover plate 13 toward the outer side of the cover plate 13, and each mounting hole 131 has mounting grooves 133 on opposite sides in the circumferential direction. Therefore, each mounting hole 131 is provided with toothed shoes 15 on opposite sides in the circumferential direction, and the toothed shoes 15 correspond to the opening slots 1101 between two adjacent iron cores 111 in the axial direction X. This can further reduce the opening size of the opening slots 1101 between two adjacent iron cores 111, reduce the tooth harmonics of slot leakage reactance and air gap magnetic flux density, thereby improving the torque pulsation of the motor 100 and enhancing the stability of the motor 100 operation. For ease of understanding, the following embodiment only uses the example of each mounting hole 131 having mounting slots 133 on opposite sides in the circumferential direction for explanation.

[0051] In some embodiments, the mounting groove 133 is spaced apart from the mounting hole 131. That is, the mounting groove 133 is spaced apart from the mounting hole 131 in the circumferential direction. When the toothed shoe 15 is disposed in the mounting groove 133, the toothed shoe 15 is spaced apart from the iron core 111. This reduces tooth harmonics in the slot leakage reactance and air gap magnetic flux density, improving torque ripple in the motor 100, while preventing the iron core 111 from interfering with the installation of the toothed shoe 15 in the mounting groove 133, ensuring proper assembly of the toothed shoe 15.

[0052] In other embodiments, the mounting groove 133 communicates with the mounting hole 131, and when the toothed shoe 15 is disposed in the mounting groove 133, the toothed shoe 15 abuts against the iron core 111. This can further reduce the opening size of the slot 1101 between two adjacent iron cores 111, thereby more effectively reducing leakage flux, reducing slot leakage reactance and tooth harmonics that reduce air gap magnetic flux density, and thus improving the torque ripple of the motor 100 and enhancing the stability of the motor 100 operation.

[0053] It should be noted that in some embodiments, the toothed shoe 15 is made of a soft magnetic composite material. For example, the toothed shoe 15 can be molded from a soft magnetic composite material. The toothed shoe 15 being made of a soft magnetic composite material allows the guiding magnetic field (such as the magnetic field generated by energizing the coil 113) to pass more smoothly through the opening slot 1101 between two adjacent iron cores 111, reducing leakage flux and slot leakage reactance. Simultaneously, it makes the air gap magnetic flux distribution more uniform, reducing tooth harmonics in the air gap magnetic flux, thereby improving the torque ripple of the motor 100 and enhancing the operational stability of the motor 100.

[0054] In some embodiments, the assembly steps of the stator assembly 10 may be as follows: First, the iron core 111 is installed in the mounting hole 131 of one of the two cover plates 13; then, the coil 113 is wound and directly inserted into the iron core 111 to form the iron core component 11; subsequently, the mounting hole 131 of the other of the two cover plates 13 is aligned with the end of the iron core 111 with the coil 113 wound on and installed, so that the iron core component 11 is located between the two cover plates 13; finally, the toothed shoe 15 is installed in the mounting groove 133 by an epoxy resin sealing process, thus completing the assembly of the stator assembly 10. It is understood that the above assembly steps of the stator assembly 10 are only illustrative examples. In other embodiments, the assembly steps of the stator assembly 10 may also take other forms, which will not be described in detail here.

[0055] In the stator assembly 10 of this application embodiment, the cover plate 13 is provided with a plurality of mounting grooves 133, and a plurality of toothed shoes 15 are respectively disposed in the mounting grooves 133. The toothed shoes 15 correspond to the opening grooves 1101 between two adjacent iron cores 111 in the axial direction X. Thus, the arrangement of the toothed shoes 15 can reduce the opening size of the opening grooves 1101 between two adjacent iron cores 111. That is, the arrangement of the toothed shoes 15 can reduce the opening size of the opening grooves 1101 between two adjacent iron cores 111 in the axial direction X. This not only reduces the leakage flux of the magnetic field (magnetic field generated by the energization of the coil 113) of the stator assembly 10 and reduces the slot leakage reactance, but also makes the air gap magnetic flux distribution more uniform, reduces the tooth harmonics of the air gap magnetic flux, thereby improving the torque pulsation of the motor 100, improving the stability of the motor 100 operation, improving its noise, vibration, and harshness (NVH) characteristics, and improving the efficiency and performance of the motor 100.

[0056] The stator assembly 10 will be further described below with reference to the accompanying drawings.

[0057] Please see Figure 2 and combined Figure 4 or Figure 5 In some embodiments, the cross-section of the toothed shoe 15 is the same as the cross-section of the mounting groove 133. That is, the shape and size of the toothed shoe 15 are the same as the shape and size of the mounting groove 133. Thus, when the toothed shoe 15 is installed in the mounting groove 133, the toothed shoe 15 can be more tightly embedded in the mounting groove 133. This improves the stability of the toothed shoe 15 in the mounting groove 133, avoids visual defects caused by a large gap between the toothed shoe 15 and the mounting groove 133 when installed, and improves the visual effect of the stator assembly 10. Furthermore, it eliminates the need for additional positioning when the toothed shoe 15 is installed in the mounting groove 133, improving the assembly efficiency of the toothed shoe 15.

[0058] In other embodiments, the cross-section of the toothed shoe 15 is smaller than the cross-section of the mounting groove 133. That is, the circumferential dimension of the toothed shoe 15 is smaller than the circumferential dimension of the mounting groove 133; and / or, the radial dimension of the toothed shoe 15 in the stator assembly 10 (the direction perpendicular to the axial direction X of the stator assembly 10) is smaller than the radial dimension of the mounting groove 133. This ensures that the toothed shoe 15 can be installed in the mounting groove 133, avoiding the toothed shoe 15 from protruding outside the mounting groove 133 due to installation errors, which would cause the toothed shoe 15 to interfere with or collide with other structures, thereby improving the stability and reliability of the motor 100.

[0059] For ease of understanding, the following embodiments will only be described using the example where the cross-section of the toothed shoe 15 is the same as the cross-section of the mounting groove 133.

[0060] Please see Figure 2 and Figure 4 In some embodiments, adjacent mounting slots 133 are symmetrically arranged in the circumferential direction of the stator assembly 10. That is, adjacent mounting slots 133 have the same shape and size in the circumferential direction of the stator assembly 10. This can reduce slot leakage reactance and tooth harmonics of air gap magnetic flux density, thereby improving the torque pulsation of the motor 100 and enhancing the stability of motor 100 operation. On the other hand, it can make the multiple tooth shoes 15 have the same shape and size, thereby facilitating the processing and manufacturing of tooth shoes 15 and reducing the production cost of tooth shoes 15. Furthermore, it can improve the visual effect of the stator assembly 10 and enhance its aesthetics.

[0061] Please see Figure 2 and Figure 5 In other embodiments, adjacent mounting slots 133 are asymmetrically arranged circumferentially in the stator assembly 10. That is, adjacent mounting slots 133 have different shapes and / or sizes circumferentially in the stator assembly 10, and the shape and / or size of the toothed shoe 15 in the adjacent mounting slots 133 may also be different. In one example, adjacent mounting slots 133 have different shapes circumferentially in the stator assembly 10. For example, one of the adjacent mounting slots 133 has a trapezoidal cross-sectional shape, and the other has a rectangular cross-sectional shape. In another example, adjacent mounting slots 133 have different sizes circumferentially in the stator assembly 10. For example, both adjacent mounting slots 133 may have square cross-sectional shapes, but the two squares have different sizes. In yet another example, adjacent mounting slots 133 have different shapes and sizes circumferentially in the stator assembly 10.

[0062] Please see Figure 2 and combined Figure 4 or Figure 5In some embodiments, the projection of the toothed shoe 15 onto a plane perpendicular to the axial direction X is located within the projection of the opening slot 1101 between two adjacent iron cores 111 onto a plane perpendicular to the axial direction X. That is, the size of the projection of the toothed shoe 15 on the plane perpendicular to the axial direction X is smaller than the size of the projection of the slot 1101 between two adjacent iron cores 111 on the plane perpendicular to the axial direction X. Thus, the toothed shoe 15 can make the stator iron core (formed by multiple iron cores 111) a semi-open slot structure. That is, the toothed shoe 15 can reduce the opening size of the slot 1101 between two adjacent iron cores 111, but the opening of the slot 1101 between two adjacent iron cores 111 in the axial direction X is not closed. This can reduce the leakage flux of the magnetic field of the stator assembly 10 and reduce the slot leakage reactance, while making the air gap magnetic flux distribution more uniform, reducing the tooth harmonics of the air gap magnetic flux, thereby improving the torque pulsation of the motor 100, improving the stability of the motor 100 operation, reducing the wear of mechanical parts, and extending the service life of the motor 100.

[0063] In other embodiments, the projection of the toothed shoe 15 onto a plane perpendicular to the axial direction X completely coincides with the projection of the slot 1101 between two adjacent stators onto a plane perpendicular to the axial direction X. That is, the size of the projection of the toothed shoe 15 onto a plane perpendicular to the axial direction X is equal to the size of the projection of the slot 1101 between two adjacent iron cores 111 onto a plane perpendicular to the axial direction X. Thus, the toothed shoe 15 allows the stator iron core (formed by multiple iron cores 111) to be constructed as a closed slot structure. In other words, the toothed shoe 15 can close the opening of the slot 1101 between two adjacent iron cores 111 in the axial direction X, thereby further reducing slot leakage reactance and tooth harmonics that reduce air gap magnetic flux density. This, in turn, can improve the torque ripple of the motor 100, enhance the stability of the motor 100 operation, reduce the wear of mechanical parts, and extend the service life of the motor 100.

[0064] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, other implementation methods can be derived from the above embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A stator assembly (10), characterized in that, include: The iron core component (11) includes a plurality of iron cores (111) and a plurality of coils (113). The plurality of iron cores (111) are arranged at intervals along the circumference of the stator assembly (10), and the plurality of coils (113) are respectively disposed on the plurality of iron cores (111). Cover plate (13), comprising two covers plate (13), the two covers plate (13) being respectively disposed on opposite sides of the iron core component (11) in the axial direction of the stator assembly (10), the covers plate (13) being provided with a plurality of mounting holes (131) and a plurality of mounting grooves (133), the mounting holes (131) corresponding one-to-one with the iron core (111) and being used to fix the iron core (111); and Multiple toothed shoes (15) are respectively disposed in multiple mounting slots (133), and the toothed shoes (15) correspond to the opening slots (1101) between two adjacent iron cores (111) in the axial direction.

2. The stator assembly (10) according to claim 1, characterized in that, Each of the mounting holes (131) has a mounting groove (133) on opposite sides in the circumferential direction.

3. The stator assembly (10) according to claim 1, characterized in that, In the circumferential direction of the stator assembly (10), two adjacent mounting slots (133) are symmetrically arranged; and / or, In the circumferential direction of the stator assembly (10), two adjacent mounting slots (133) are arranged asymmetrically.

4. The stator assembly (10) according to claim 1, characterized in that, The toothed boot (15) is made of soft magnetic composite material.

5. The stator assembly (10) according to claim 1, characterized in that, The mounting groove (133) is spaced apart from the mounting hole (131); and / or, The mounting groove (133) communicates with the mounting hole (131). When the toothed shoe (15) is placed in the mounting groove (133), the toothed shoe (15) abuts against the iron core (111).

6. The stator assembly (10) according to claim 1, characterized in that, In the direction from the cover plate (13) to the core component (11), the cross-sectional dimension of the mounting hole (131) gradually increases.

7. The stator assembly (10) according to claim 1, characterized in that, The projection of the toothed shoe (15) onto a plane perpendicular to the axial direction lies within the projection of the opening slot (1101) between two adjacent iron cores (111) onto a plane perpendicular to the axial direction; or, The projection of the toothed shoe (15) onto a plane perpendicular to the axial direction completely coincides with the projection of the opening slot (1101) between two adjacent iron cores (111) onto a plane perpendicular to the axial direction.

8. The stator assembly (10) according to claim 1, characterized in that, The cross-section of the toothed shoe (15) is the same as the cross-section of the mounting groove (133); or, The cross-section of the toothed shoe (15) is smaller than the cross-section of the mounting groove (133).

9. An electric motor (100), characterized in that, include: The stator assembly (10) according to any one of claims 1-8.

10. The motor (100) according to claim 9, characterized in that, The motor (100) also includes: The rotor assembly (30) cooperates with the stator assembly (10) and is movable relative to the stator assembly (10).

11. A vehicle (1000), characterized in that, include: The motor (100) according to claim 9 or 10.

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