Stator, motor, electric drive apparatus, electric drive system, and electric device

Abstract

The present application provides a stator (11), a motor (10), an electric drive apparatus (1), an electric drive system, and an electric device. The stator (11) comprises a stator housing (111) and a stator main body (112). The stator housing (111) comprises a shell (1111), a first cover plate (1112), a second cover plate (1113), and a support member (1114). The shell (1111) is provided with an accommodating cavity (11111), the first cover plate (1112) and the second cover plate (1113) are separately fixedly disposed on the shell (1111), and the support member (1114) is fixedly connected to the shell (1111). The stator main body (112) is mounted on the support member (1114). One side of the stator main body (112) is fixedly connected to the first cover plate (1112), and the other side of the stator main body (112) is fixedly connected to the second cover plate (1113).

Description

Stator, motor, electric drive unit, electric drive system and electric equipment

[0001] Cross-references

[0002] This application incorporates Chinese Patent Application No. 202421676829.9, filed on July 15, 2024, entitled “Stator, Motor, Electric Drive Device, Electric Drive System and Electric Equipment”, which is incorporated herein by reference in its entirety. Technical Field

[0003] This application relates to the field of motor technology, specifically to a stator, motor, electric drive device, electric drive system, and electric equipment. Background Technology

[0004] With increasing environmental pollution, new energy vehicles are gaining popularity. The electric drive system, as the power unit of new energy vehicles, converts electrical energy from the battery into mechanical energy to propel the vehicle. As the core component of the electric drive system, improving the performance of the electric motor is a crucial technical problem that urgently needs to be solved in electric drive technology. Summary of the Invention

[0005] The purpose of this application is to provide a motor, electric drive device, electric drive system, and electric equipment to solve the technical problem of poor motor performance in related technologies.

[0006] To achieve the above objectives, the technical solution adopted in this application embodiment is: to provide a stator, comprising:

[0007] The stator housing includes a housing, a first cover plate, a second cover plate, and a support member. The housing has a cavity. The first cover plate and the second cover plate are respectively fixed on opposite sides of the housing along the axial direction of the stator to close the cavity. The support member is disposed in the cavity and fixedly connected to the housing.

[0008] The stator body is housed in the cavity and fixedly mounted on the support. One side of the stator body along the axial direction of the stator is fixedly connected to the first cover plate, and the other side of the stator body along the axial direction of the stator is fixedly connected to the second cover plate.

[0009] The stator provided in this application embodiment has at least the following beneficial effects: A support member is provided inside the housing of the stator provided in this application embodiment. The support member is fixedly connected to the housing. A first cover plate and a second cover plate are respectively fixed on opposite sides of the housing along the axial direction of the stator. The stator body is not only fixedly connected to the first cover plate and the second cover plate, but also fixedly installed on the support member. This not only improves the installation stability of the stator body, but also allows the torque borne by the stator body during motor operation to be transmitted to the housing not only through the first cover plate and the second cover plate, but also through the support member. This reduces the strength requirements of the first cover plate and the second cover plate, reduces their thickness, thereby reducing the air gap of the motor and effectively improving the motor's performance.

[0010] In some embodiments of this application, the stator body includes multiple stator blocks and multiple windings. The multiple stator blocks are divided into a first stator block and a second stator block. The multiple windings are divided into a first winding wound on the first stator block and a second winding wound on the second stator block. The first stator block is fixedly connected between the support member and the first cover plate, and the second stator block is fixedly connected between the support member and the second cover plate.

[0011] By adopting the above technical solution, the first stator block and the first winding can form part of the stator body, and the second stator block and the second winding can form another part of the stator body. The two parts of the stator body can work independently of each other. If one part of the stator body cannot work properly, the stator can still continue to work by relying on the other part of the stator body. This realizes the redundancy design of the stator, effectively improves the reliability of the stator, and further improves the performance of the motor.

[0012] In some embodiments of this application, a first positioning groove is provided on the side of the support member facing the first stator block, and the first stator block is inserted into the first positioning groove. A second positioning groove is provided on the side of the support member facing the second stator block, and the second stator block is inserted into the second positioning groove.

[0013] By adopting the above technical solution, the positions of the first stator block and the second stator block are effectively limited, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0014] In some embodiments of this application, the first stator block is bonded to the first positioning groove; and / or, the second stator block is bonded to the second positioning groove.

[0015] By adopting the above technical solution, the positions of the first stator block and the second stator block can be more effectively restricted, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0016] In some embodiments of this application, the number of first stator blocks and the number of first positioning slots are both multiple, and the multiple first stator blocks are configured in a one-to-one correspondence with the multiple first positioning slots; and / or, the number of second stator blocks and the number of second positioning slots are both multiple, and the multiple second stator blocks are configured in a one-to-one correspondence with the multiple second positioning slots.

[0017] By adopting the above technical solution, the positions of each first stator block and each second stator block are effectively restricted, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0018] In some embodiments of this application, the first positioning groove and the second positioning groove are interconnected along the axis of the stator, and the end of the first stator block facing away from the first cover plate abuts against the end of the second stator block facing away from the second cover plate.

[0019] By adopting the above technical solution, not only can the relative positions of the first stator block and the second stator block be effectively limited, but the overall integrity of the stator body can also be effectively improved, and the vibration of the stator body during operation can be reduced, thereby further improving the performance of the motor.

[0020] In some embodiments of this application, the stator block includes an iron core and an insulating sleeve fitted onto the iron core. The insulating sleeve of the first stator block is fixedly connected to a first cover plate, and the insulating sleeve of the second stator block is fixedly connected to a second cover plate.

[0021] By adopting the above technical solution, it is easy to fix the stator body between the first cover plate and the second cover plate.

[0022] In some embodiments of this application, the insulating sleeve of the first stator block is welded or bonded to the first cover plate; and / or, the insulating sleeve of the second stator block is welded or bonded to the second cover plate.

[0023] By adopting the above technical solution, it is convenient to fix the first stator block to the first cover plate and the second stator block to the second cover plate.

[0024] In some embodiments of this application, the insulating sleeve includes an insulating body sleeved on the iron core and a connecting boss connected to the insulating body. The connecting boss protrudes from the insulating body along the axial direction of the stator. The connecting boss of the first stator block is fixedly connected to the first cover plate, and the connecting boss of the second stator block is fixedly connected to the second cover plate.

[0025] By adopting the above technical solution, the connection strength between the first stator block and the first cover plate and the connection strength between the second stator block and the second cover plate are effectively improved, thereby further enhancing the installation stability of the stator body and further improving the performance of the motor.

[0026] In some embodiments of this application, the protrusion height of the connecting boss from the insulating body along the axial direction of the stator is 0.1mm-1mm.

[0027] By adopting the above technical solution, not only can the connection strength between the first stator block and the first cover plate and the connection strength between the second stator block and the second cover plate be effectively improved, but the problem of excessive air gap in the motor can also be improved, thereby further enhancing the performance of the motor.

[0028] In some embodiments of this application, the core includes teeth and boots, which are integrally connected.

[0029] By adopting the above technical solution, the structural stability of the iron core is effectively improved, thereby further enhancing the performance of the motor.

[0030] In some embodiments of this application, the insulating sleeve is welded to the support member.

[0031] By adopting the above technical solution, it is easier to fix the stator block on the support, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0032] In some embodiments of this application, the inner peripheral wall of the housing is provided with a positioning part, which is engaged with the support member.

[0033] By adopting the above technical solution, the relative position of the support and the housing is effectively limited, the connection strength between the support and the housing is improved, thereby further enhancing the installation stability of the stator body and further improving the performance of the motor.

[0034] In some embodiments of this application, there are multiple positioning parts, which are evenly distributed along the circumference of the housing.

[0035] By adopting the above technical solution, the force on the support component along the circumference of the housing can be made more uniform, which further improves the connection strength between the support component and the housing, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0036] In some embodiments of this application, the housing is a metal part and the support is an insulating part.

[0037] This not only effectively improves the structural strength of the stator housing, but also facilitates the insulation separation between the stator body and the housing. This application also provides a motor including the stator of any of the above embodiments.

[0038] In some embodiments of this application, the support is an injection-molded part.

[0039] By adopting the above technical solution, it is easy to form a support component inside the housing, which effectively simplifies the stator manufacturing process and improves the stator production efficiency.

[0040] The motor provided in this application embodiment has at least the following beneficial effects: the motor provided in this application embodiment effectively improves the performance of the motor by adopting the stator of any of the above embodiments.

[0041] In some embodiments of this application, the motor further includes a first rotor and a second rotor, which are respectively disposed on opposite sides of the stator along the axial direction.

[0042] By adopting the above technical solution, the above motor can be configured as a dual-rotor motor, which effectively improves the performance of the dual-rotor motor.

[0043] This application also provides an electric drive device, including the motor described in any of the above embodiments.

[0044] The electric drive device provided in this application embodiment has at least the following beneficial effects: the electric drive device provided in this application embodiment effectively improves the performance of the electric drive device by using the motor described in any of the above embodiments.

[0045] This application also provides an electric drive system, including a battery and the above-described electric drive device, wherein the battery is electrically connected to a motor.

[0046] The electric drive system provided in this application embodiment has at least the following beneficial effects: the electric drive system provided in this application embodiment effectively improves the performance of the electric drive system by adopting the above-mentioned electric drive device.

[0047] This application also provides an electric device, including the above-described electric drive device or the above-described electric drive system.

[0048] The electric equipment provided in this application embodiment has at least the following beneficial effects: the electric equipment provided in this application embodiment effectively improves the performance of the electric equipment by adopting the above-mentioned electric drive device or the above-mentioned electric drive system. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 is a structural schematic diagram of the vehicle provided in an embodiment of this application;

[0051] Figure 2 is a schematic diagram of the exploded structure of the battery provided in an embodiment of this application;

[0052] Figure 3 is a schematic diagram of the structure of the electric drive device provided in an embodiment of this application;

[0053] Figure 4 is a schematic diagram of the structure of the motor provided in an embodiment of this application;

[0054] Figure 5 is a schematic diagram of the stator structure in the motor shown in Figure 4;

[0055] Figure 6 is a schematic diagram of the exploded structure of the stator shown in Figure 5;

[0056] Figure 7 is a schematic diagram of the structure of the shell in the stator shown in Figure 6;

[0057] Figure 8 is a structural schematic diagram of the support member in the stator shown in Figure 6;

[0058] Figure 9 is a schematic diagram of the stator block in the stator shown in Figure 6;

[0059] Figure 10 is a schematic diagram of the main structure of the stator shown in Figure 5;

[0060] Figure 11 is a schematic cross-sectional view of the stator shown in Figure 10 along line AA.

[0061] Figure 12 is an enlarged structural diagram of section B of the stator shown in Figure 11.

[0062] In the figures, the following reference numerals are used: 1. Electric drive device; 10. Motor; 11. Stator; 111. Stator housing; 1111. Housing; 11111. Cavity; 11112. Positioning part; 1112. First cover plate; 1113. Second cover plate; 1114. Support member; 11141. First positioning groove; 11142. Second positioning groove; 11143. Connecting part; 11144. Supporting part; 1115. Cylinder; 112. Stator body; 1121. Stator block; 1121a. First stator block; 1121b. Second stator block; 11211. Iron core; 11212. Insulating sleeve; 11213. Tooth; 11214. Shoe part; 11215. Insulating body; 11216. Connecting boss; 12. First rotor; 13. Second rotor; 20. Controller; 30. Transmission mechanism; 2. Battery; 21. Housing; 211. First part; 212. Second part; 22. Battery cell; 3. Vehicle body. Detailed Implementation

[0063] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0064] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0065] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "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.

[0066] Furthermore, the terms "first," "second," and "third" 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," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0067] An electric drive system is the power unit of an electric device, and the motor is the core component of the electric drive system, used to convert electrical energy into mechanical energy. A motor typically consists of a stator and a rotor. The stator includes a stator housing and a stator body, with the stator body fixedly installed inside the stator housing. During motor operation, current flows through the stator body, generating a magnetic field. Under the influence of this magnetic field, the rotor is magnetically coupled to the stator body, driving the rotor to rotate.

[0068] In related technologies, a stator housing typically includes a shell and two cover plates. The shell has a cavity for accommodating the stator body, and the two cover plates are fixedly mounted on opposite sides of the shell along the stator's axial direction to close the cavity. The stator body is fixedly connected to the two cover plates. During motor operation, due to the interaction force between the stator body and the rotor, the stator body experiences a significant torque when the rotor rotates. This torque is transmitted to the shell through the two cover plates; therefore, the structural strength of the two cover plates needs to meet high requirements. Currently, the structural strength of the two cover plates is mainly improved by increasing their thickness. However, this leads to an increase in the air gap between the stator body and the rotor, which is detrimental to improving motor performance.

[0069] To improve motor performance, the stator provided in this embodiment has a support member inside the housing. The support member is fixedly connected to the housing. The stator body is not only fixedly connected to the first cover plate and the second cover plate, but also fixedly mounted on the support member. This not only improves the installation stability of the stator body, but also allows the torque borne by the stator body during motor operation to be transmitted to the housing not only through the first and second cover plates, but also through the support member. This reduces the strength requirements of the first and second cover plates, reduces their thickness, and thus reduces the air gap of the motor, effectively improving motor performance.

[0070] The technical solutions described in this application are applicable to motors, electric drive devices using motors, and electric equipment using electric drive devices. Electric equipment can be, but is not limited to, vehicles, ships, spacecraft, and electric toys, etc. Vehicles can be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as electric car toys, electric ship toys, and electric airplane toys, etc.

[0071] For ease of explanation, the following embodiments will use a vehicle as an example of the electric device in one embodiment of this application.

[0072] Please refer to Figure 1, which is a structural schematic diagram of the vehicle provided in this embodiment. The vehicle includes a body 3, a battery 2, and an electric drive unit 1. The body 3 is the main supporting component of the vehicle, and has an engine compartment and a passenger compartment. The engine compartment is used to house the electric drive unit 1, and the passenger compartment provides operating and seating space for the driver and passengers. When the vehicle is a front-wheel drive vehicle, the engine compartment is located at the front of the body 3, i.e., the engine compartment is the front engine compartment; when the vehicle is a rear-wheel drive vehicle, the engine compartment is located at the rear of the body 3, i.e., the engine compartment is the rear engine compartment; when the vehicle is a four-wheel drive vehicle, the engine compartment is divided into a front engine compartment and a rear engine compartment, with the front engine compartment located at the front of the body 3 and the rear engine compartment located at the rear of the body 3. There can be two electric drive units 1, one in the front engine compartment and one in the rear engine compartment. The battery 2 and the electric drive unit 1 together constitute the electric drive system of the vehicle. Battery 2 can be located at the bottom, front, or rear of the vehicle. Battery 2 can supply power to electric drive unit 1 to drive electric drive unit 1. Electric drive unit 1 is used to convert the electrical energy provided by battery 2 into mechanical energy and output the mechanical energy to the wheels of the vehicle to drive the vehicle.

[0073] Please refer to Figure 2, which is an exploded view of the battery 2 provided in an embodiment of this application. The battery 2 includes a housing 21 and a battery cell 22, with the battery cell 22 housed within the housing 21. The housing 21 provides a space for the battery cell 22, and can have various structures. In some embodiments, the housing 21 may include a first portion 211 and a second portion 212, which overlap each other, jointly defining a space for accommodating the battery cell 22. The second portion 212 may be a hollow structure with one open end, and the first portion 211 may be a plate-like structure, covering the open side of the second portion 212 so that the first portion 211 and the second portion 212 jointly define the space. Alternatively, the first portion 211 and the second portion 212 may both be hollow structures with one open side, with the open side of the first portion 211 covering the open side of the second portion 212 so that the first portion 211 and the second portion 212 jointly define the space. Of course, the box 21 formed by the first part 211 and the second part 212 can be of various shapes, such as cylinder, cuboid, etc., and no specific limitation is made here.

[0074] In some embodiments, the housing 21 may be part of the vehicle's chassis structure. For example, a portion of the housing 21 may be at least a portion of the vehicle's floor, or a portion of the housing 21 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0075] Of course, in some embodiments, the battery 2 may not include the housing 21, but rather multiple battery cells 22 are electrically connected and assembled into the vehicle after being formed into a whole by necessary fixing structures.

[0076] In battery 2, there can be multiple battery cells 22, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 22 are connected in both series and parallel configurations. Multiple battery cells 22 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 22 is housed within the casing 21. Alternatively, battery 2 can also consist of multiple battery cells 22 first connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the casing 21. Battery 2 may also include other functional components; for example, it may include a busbar for electrical connection between the multiple battery cells 22.

[0077] Each battery cell 22 can be a secondary battery cell or a primary battery cell. A secondary battery cell refers to a battery cell 22 that can be recharged to activate its active materials and continue to be used after being discharged. A primary battery cell refers to a battery cell 22 that cannot be recharged to activate its active materials and continue to be used after its electrical energy is depleted. The battery cell 22 can also be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-metal hydride battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc., but is not limited thereto. The battery cell 22 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell 22 of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells, etc. This application does not have any particular limitations.

[0078] Please refer to Figure 3, which is a schematic diagram of the structure of the electric drive device 1 provided in an embodiment of this application. The electric drive device 1 includes a motor 10, which converts the electrical energy provided by the battery 2 into mechanical energy. Specifically, the motor 10 typically includes a stator 11 and a rotor. During the operation of the motor 10, current flows through the stator 11, causing the stator 11 to generate a magnetic field. Under the action of the magnetic field, the rotor is magnetically coupled to the stator 11 to drive the rotor to rotate. The motor 10 can be, but is not limited to, an axial flux motor, a radial flux motor, a servo motor, a brushed motor, a brushless motor, etc. In some embodiments, there are two motors 10, which are coaxially arranged, that is, the central axes of the two motors 10 coincide. The "central axis" of the motor 10 refers to the axial center line of the rotating shaft (or "rotor shaft") of the motor 10. As an example, the shaft of one motor 10 is connected to one of the left and right front wheels of the vehicle, and the shaft of the other motor 10 is connected to the other of the left and right front wheels of the vehicle; alternatively, the shaft of one motor 10 is connected to one of the left and right rear wheels of the vehicle, and the shaft of the other motor 10 is connected to the other of the left and right rear wheels of the vehicle. During the operation of the electric drive unit 1, the two motors 10 may rotate at the same speed or at different speeds.

[0079] Of course, in other embodiments, the number of motors 10 may also be one.

[0080] In some embodiments, the electric drive device 1 may further include a controller 20. The controller 20 is used to convert the direct current output by the battery 2 into alternating current and transmit the alternating current to the motor 10. The controller 20 may also be used to control the operation of the motor 10, for example, to control the start / stop, speed, torque, etc. of the motor 10. In other words, both the motor 10 and the battery 2 are electrically connected to the controller 20. The direct current output by the battery 2 can be transmitted to the controller 20 through the current transmission path between the battery 2 and the controller 20. After the controller 20 converts the direct current into alternating current, the alternating current can be transmitted to the motor 10 through the current transmission path between the controller 20 and the motor 10 to drive the motor 10 to operate. At the same time, the control signal of the controller 20 can be transmitted to the motor 10 through the current transmission path between the controller 20 and the motor 10, and the operating status signal of the motor 10 can be transmitted to the controller 20 through the current transmission path between the controller 20 and the motor 10 to realize the controller 20 controlling the operation of the motor 10.

[0081] In some embodiments, the electric drive device 1 may further include a transmission mechanism 30, which transmits the mechanical energy to the vehicle wheels by changing the rotational speed and torque of the motor 10. For example, the transmission mechanism 30 transmits the mechanical energy to the vehicle wheels by decreasing the rotational speed of the motor 10 and increasing the torque of the motor 10; or, for instance, the transmission mechanism 30 transmits the mechanical energy to the vehicle wheels by increasing the rotational speed of the motor 10 and decreasing the torque of the motor 10. The transmission mechanism 30 may be, but is not limited to, a gear transmission mechanism, a worm gear transmission mechanism, a planetary gear transmission mechanism, a continuously variable transmission mechanism, etc.

[0082] To illustrate the technical solutions provided in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0083] Firstly, referring to Figures 5 to 12, this application provides a stator 11, including a stator housing 111 and a stator body 112. The stator housing 111 includes a shell 1111, a first cover plate 1112, a second cover plate 1113, and a support member 1114. The shell 1111 has a cavity 11111. The first cover plate 1112 and the second cover plate 1113 are respectively fixedly disposed on opposite sides of the shell 1111 along the axial direction of the stator 11 to close the cavity 11111. The support member 1114 is disposed within the cavity 11111 and fixedly connected to the shell 1111. The stator body 112 is housed within the cavity 11111 and fixedly mounted on the support member 1114. One side of the stator body 112 along the axial direction of the stator 11 is fixedly connected to the first cover plate 1112, and the other side of the stator body 112 along the axial direction of the stator 11 is fixedly connected to the second cover plate 1113.

[0084] The housing 1111 is the main body of the stator housing 111. The housing 1111 provides the internal environment of the stator housing 111, at least a portion of which constitutes the aforementioned cavity 11111, which accommodates the stator body 112. The housing 1111 can be a single-piece molded component or an assembled component composed of multiple parts. The material of the housing 1111 can be, but is not limited to, aluminum alloy, stainless steel, aluminum, copper, iron, plastic, etc.

[0085] The first cover plate 1112 and the second cover plate 1113 are applied to the housing 1111 to isolate the internal environment from the external environment of the stator housing 111.

[0086] In some embodiments, the housing 1111 has an annular structure, and the inner annular space of the housing 1111 constitutes the aforementioned internal environment. A first cover plate 1112 is provided on one open side of the housing 1111 along the axial direction of the stator 11, and a second cover plate 1113 is provided on the other open side of the housing 1111 along the axial direction of the stator 11, so as to isolate the aforementioned internal environment from the external environment of the stator housing 111.

[0087] In some embodiments, both the first cover plate 1112 and the second cover plate 1113 are sealingly connected to the housing 1111. For example, the first cover plate 1112 is welded to or bonded to the housing 1111. For example, the first cover plate 1112 is connected to the housing 1111 by fasteners such as bolts or rivets, and a seal is provided at the connection between the first cover plate 1112 and the housing 1111. For example, the second cover plate 1113 is welded to or bonded to the housing 1111. For example, the second cover plate 1113 is connected to the housing 1111 by fasteners such as bolts or rivets, and a seal is provided at the connection between the second cover plate 1113 and the housing 1111.

[0088] The support member 1114 provides support for the stator body 112. The material of the support member 1114 can be, but is not limited to, aluminum alloy, stainless steel, aluminum, copper, iron, plastic, etc. The support member 1114 is fixedly connected to the housing 1111, and the fixed connection method between the support member 1114 and the housing 1111 can be, but is not limited to, welding, bonding, fastening, etc. In some embodiments, the support member 1114 includes a connecting portion 11143 and a supporting portion 11144. Both the housing 1111 and the connecting portion 11143 have an annular structure. The housing 1111 is sleeved on the connecting portion 11143, the outer peripheral wall of the connecting portion 11143 is fixedly connected to the inner peripheral wall of the housing 1111, the supporting portion 11144 is connected to the inner peripheral wall of the connecting portion 11143, and the stator body 112 is fixedly mounted on the supporting portion 11144. The connecting part 11143 and the supporting part 11144 can be integrally formed components, or the connecting part 11143 and the supporting part 11144 can be formed separately and then connected to each other to form a whole.

[0089] The stator body 112 is the core component of the stator 11, and it is used to generate a magnetic field. The stator body 112 is fixedly mounted on the support member 1114. Alternatively, the stator body 112 can be fixedly mounted on the support member 1114 using other components, or necessary fixing structures can be provided on the stator body 112 and / or the support member 1114 to fix the stator body 112 onto the support member 1114. The stator body 112 is fixedly connected to the first cover plate 1112 and the second cover plate 1113 on opposite sides along the axial direction of the stator 11. The fixing connection between the stator body 112 and the first cover plate 1112 can be, but is not limited to, welding, bonding, or fastening. The fixing connection between the stator body 112 and the second cover plate 1113 can be, but is not limited to, welding, bonding, or fastening.

[0090] In some embodiments, the support member 1114 is disposed at the middle of the stator body 112 along the axial direction of the stator 11, and the first cover plate 1112 and the second cover plate 1113 are disposed on opposite sides of the stator body 112 along the axial direction of the stator 11, so that the stator body 112 is subjected to force balance along the axial direction of the stator 11.

[0091] In the stator 11 provided in this embodiment, a support member 1114 is provided inside the housing 1111. The support member 1114 is fixedly connected to the housing 1111. The first cover plate 1112 and the second cover plate 1113 are respectively fixedly disposed on opposite sides of the housing 1111 along the axial direction of the stator 11. The stator body 112 is not only fixedly installed on the support member 1114, but also fixedly connected to the first cover plate 1112 and the second cover plate 1113. In this way, not only can the installation stability of the stator body 112 be improved, but also, during the operation of the motor 10, the torque borne by the stator body 112 can be transmitted to the housing 1111 not only through the first cover plate 1112 and the second cover plate 1113, but also through the support member 1114. This can reduce the strength requirements of the first cover plate 1112 and the second cover plate 1113, reduce the thickness of the first cover plate 1112 and the second cover plate 1113, thereby reducing the air gap of the motor 10 and effectively improving the performance of the motor 10.

[0092] In some embodiments of this application, please refer to Figures 6, 11 and 12 together. The stator body 112 includes a plurality of stator blocks 1121 and a plurality of windings. The plurality of stator blocks 1121 are divided into a first stator block 1121a and a second stator block 1121b. The plurality of windings are divided into a first winding wound on the first stator block 1121a and a second winding wound on the second stator block 1121b. The first stator block 1121a is fixedly connected between the support member 1114 and the first cover plate 1112, and the second stator block 1121b is fixedly connected between the support member 1114 and the second cover plate 1113.

[0093] The winding is a component used to generate a magnetic field, and the stator block 1121 is a component used to conduct the magnetic field. Specifically, the winding is wound on the stator block 1121. During the operation of the motor 10, current is passed through the winding to generate a magnetic field. The stator block 1121 conducts the magnetic field and causes the magnetic field to act on the rotor of the motor 10 to drive the rotor to rotate.

[0094] In some embodiments, there are multiple first stator blocks 1121a and multiple first windings. Multiple first stator blocks 1121a are arranged around the axis of stator 11, and multiple first windings are wound around multiple first stator blocks 1121a in a one-to-one correspondence to form a part of stator body 112. There are multiple second stator blocks 1121b and multiple second windings. Multiple second stator blocks 1121b are arranged around the axis of stator 11, and multiple second windings are wound around multiple second stator blocks 1121b in a one-to-one correspondence to form another part of stator body 112. The two parts of stator body 112 work independently of each other.

[0095] As an example, the support member 1114 is disposed between the two parts of the stator body 112. Both parts of the stator body 112 are fixedly installed on the support member 1114. One part of the stator body 112 is fixedly connected to the first cover plate 1112 on the side facing away from the support member 1114, and the other part of the stator body 112 is fixedly connected to the second cover plate 1113 on the side facing away from the support member 1114.

[0096] By adopting the above technical solution, the first stator block 1121a and the first winding can form part of the stator body 112, and the second stator block 1121b and the second winding can form another part of the stator body 112. The two parts of the stator body 112 can work independently. If one part of the stator body 112 fails to work properly, the stator 11 can continue to work by relying on the other part of the stator body 112. This realizes the redundancy design of the stator 11, effectively improves the reliability of the stator 11, and further improves the performance of the motor 10.

[0097] In some embodiments of this application, please refer to FIG12. The support member 1114 has a first positioning groove 11141 on the side facing the first stator block 1121a, and the first stator block 1121a is inserted into the first positioning groove 11141. The support member 1114 has a second positioning groove 11142 on the side facing the second stator block 1121b, and the second stator block 1121b is inserted into the second positioning groove 11142.

[0098] The support member 1114 has a recessed first positioning groove 11141 on the side facing the first stator block 1121a along the axial direction of the stator 11. The first stator block 1121a is inserted into the first positioning groove 11141 to restrict the movement of the first stator block 1121a in a direction perpendicular to the axial direction of the stator 11. It can be understood that the inner peripheral contour shape of the first positioning groove 11141 is adapted to the outer peripheral contour shape of the end of the first stator block 1121a facing the support member 1114. For example, both the inner peripheral contour shape of the first positioning groove 11141 and the outer peripheral contour shape of the end of the first stator block 1121a facing the support member 1114 are trapezoidal.

[0099] The support member 1114 has a recessed second positioning groove 11142 on the side facing the second stator block 1121b along the axial direction of the stator 11. The second stator block 1121b is inserted into the second positioning groove 11142 to restrict the movement of the second stator block 1121b in a direction perpendicular to the axial direction of the stator 11. It can be understood that the inner peripheral contour shape of the second positioning groove 11142 is adapted to the outer peripheral contour shape of the end of the second stator block 1121b facing the support member 1114. For example, both the inner peripheral contour shape of the second positioning groove 11142 and the outer peripheral contour shape of the end of the second stator block 1121b facing the support member 1114 are trapezoidal.

[0100] By adopting the above technical solution, the positions of the first stator block 1121a and the second stator block 1121b are effectively limited, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0101] In some embodiments of this application, the first stator block 1121a is bonded to the first positioning groove 11141.

[0102] As an example, adhesive can be applied to one end of the first stator block 1121a facing the support member 1114 and / or the groove wall of the first positioning groove 11141. Then, the first stator block 1121a is inserted into the first positioning groove 11141 so that the one end of the first stator block 1121a facing the support member 1114 is bonded to the groove wall of the first positioning groove 11141 by adhesive.

[0103] As an example, an adhesive film can be first attached to one end of the first stator block 1121a facing the support member 1114 and / or the groove wall of the first positioning groove 11141, and then the first stator block 1121a can be inserted into the first positioning groove 11141 so that the one end of the first stator block 1121a facing the support member 1114 is bonded to the groove wall of the first positioning groove 11141 by the adhesive film.

[0104] As an example, the first stator block 1121a can be inserted into the first positioning groove 11141 first, and then adhesive can be injected into the first positioning groove 11141 so that the end of the first stator block 1121a facing the support member 1114 is bonded to the groove wall of the first positioning groove 11141 by adhesive.

[0105] In some other embodiments of this application, the second stator block 1121b is bonded to the second positioning groove 11142.

[0106] As an example, adhesive can be applied to one end of the second stator block 1121b facing the support member 1114 and / or the groove wall of the second positioning groove 11142. Then, the second stator block 1121b is inserted into the second positioning groove 11142 so that the end of the second stator block 1121b facing the support member 1114 is bonded to the groove wall of the second positioning groove 11142 by adhesive.

[0107] As an example, an adhesive film can be first attached to one end of the second stator block 1121b facing the support member 1114 and / or the groove wall of the second positioning groove 11142, and then the second stator block 1121b can be inserted into the second positioning groove 11142 so that the end of the second stator block 1121b facing the support member 1114 is bonded to the groove wall of the second positioning groove 11142 by the adhesive film.

[0108] As an example, the second stator block 1121b can be inserted into the second positioning groove 11142 first, and then adhesive can be injected into the second positioning groove 11142 so that the end of the second stator block 1121b facing the support member 1114 is bonded to the groove wall of the second positioning groove 11142 by the adhesive.

[0109] In some other embodiments of this application, the first stator block 1121a is bonded to the first positioning groove 11141, and the second stator block 1121b is bonded to the second positioning groove 11142.

[0110] By adopting the above technical solution, the positions of the first stator block 1121a and the second stator block 1121b can be more effectively restricted, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0111] In some embodiments of this application, please refer to Figures 6 and 8. There are multiple first stator blocks 1121a and multiple first positioning slots 11141, and the multiple first stator blocks 1121a are configured in a one-to-one correspondence with the multiple first positioning slots 11141.

[0112] In some other embodiments of this application, please refer to Figures 6 and 8. The number of second stator blocks 1121b and the number of second positioning slots 11142 are both multiple, and the multiple second stator blocks 1121b and the multiple second positioning slots 11142 are configured in a one-to-one correspondence.

[0113] In some other embodiments of this application, please refer to Figures 6 and 8. There are multiple first stator blocks 1121a and multiple first positioning slots 11141. The multiple first stator blocks 1121a are configured in one-to-one correspondence with the multiple first positioning slots 11141. There are multiple second stator blocks 1121b and multiple second positioning slots 11142. The multiple second stator blocks 1121b are configured in one-to-one correspondence with the multiple second positioning slots 11142.

[0114] In some embodiments, a plurality of first positioning slots 11141 and a plurality of second positioning slots 11142 are arranged in a one-to-one correspondence along the axial direction of the stator 11. Of course, in other embodiments, the plurality of first positioning slots 11141 and the plurality of second positioning slots 11142 may also be arranged in a staggered manner along the circumferential direction of the stator 11.

[0115] By adopting the above technical solution, the positions of each first stator block 1121a and each second stator block 1121b are effectively limited, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0116] In some embodiments of this application, please refer to FIG12. The first positioning groove 11141 and the second positioning groove 11142 are connected to each other along the axial direction of the stator 11. The end of the first stator block 1121a facing away from the first cover plate 1112 abuts against the end of the second stator block 1121b facing away from the second cover plate 1113.

[0117] Understandably, the first positioning groove 11141 and the second positioning groove 11142 are interconnected along the axial direction of the stator 11 to form a positioning space. The end of the first stator block 1121a facing away from the first cover plate 1112 is inserted into the positioning space from the side of the support member 1114 facing the first cover plate 1112. The end of the second stator block 1121b facing away from the second cover plate 1113 is inserted into the positioning space from the side of the support member 1114 facing the second cover plate 1113. The end of the first stator block 1121a facing away from the first cover plate 1112 and the end of the second stator block 1121b facing away from the second cover plate 1113 abut against each other in the positioning space. It should be noted that the abutment between the end of the first stator block 1121a facing away from the first cover plate 1112 and the end of the second stator block 1121b facing away from the second cover plate 1113 means that, along the axial direction of the stator 11, the end of the first stator block 1121a facing away from the first cover plate 1112 and the end of the second stator block 1121b facing away from the second cover plate 1113 can be in direct contact or indirect contact, so that the first stator block 1121a and the second stator block 1121b cannot move towards each other along the axial direction of the stator 11.

[0118] By adopting the above technical solution, not only can the relative positions of the first stator block 1121a and the second stator block 1121b be effectively limited, but the overall integrity of the stator body 112 is also effectively improved, and the vibration of the stator body 112 during operation is improved, thereby further enhancing the performance of the motor 10.

[0119] In some embodiments of this application, please refer to Figures 9, 11 and 12 together. The stator block 1121 includes an iron core 11211 and an insulating sleeve 11212 sleeved on the iron core 11211. The insulating sleeve 11212 of the first stator block 1121a is fixedly connected to the first cover plate 1112, and the insulating sleeve 11212 of the second stator block 1121b is fixedly connected to the second cover plate 1113.

[0120] The iron core 11211 is a component used to conduct magnetic fields, and the insulating sleeve 11212 is a component used to insulate and separate the winding from the iron core 11211. Specifically, the insulating sleeve 11212 is fitted onto the iron core 11211, and the winding is wound around the outer peripheral wall of the insulating sleeve 11212. The insulating sleeve 11212 of the first stator block 1121a is fixedly connected to the first cover plate 1112, and the insulating sleeve 11212 of the second stator block 1121b is fixedly connected to the second cover plate 1113, so that the stator body 112 is fixedly connected between the first cover plate 1112 and the second cover plate 1113.

[0121] In some embodiments, the insulating sleeve 11212 is fixed relative to the iron core 11211. As an example, the insulating sleeve 11212 is fixedly connected to the iron core 11211, for example, the insulating sleeve 11212 is bonded to the iron core 11211; as an example, a limiting structure is provided between the insulating sleeve 11212 and the iron core 11211 to limit the relative position of the insulating sleeve 11212 and the iron core 11211 along the axial direction of the stator 11.

[0122] In some embodiments, the first positioning groove 11141 and the second positioning groove 11142 are interconnected along the axial direction of the stator 11. A limiting boss is provided at the connection between the first positioning groove 11141 and the second positioning groove 11142. The end of the iron core 11211 of the first stator block 1121a facing away from the first cover plate 1112 protrudes from the insulating sleeve 11212 of the first stator block 1121a. The end of the iron core 11211 of the second stator block 1121b facing away from the second cover plate 1113 protrudes from the insulating sleeve 11212 of the second stator block 1121b. 212, the end of the core 11211 of the first stator block 1121a facing away from the first cover plate 1112 and the end of the core 11211 of the second stator block 1121b facing away from the second cover plate 1113 pass through the limiting boss and abut against it. The end of the insulating sleeve 11212 of the first stator block 1121a facing away from the first cover plate 1112 abuts against the side of the limiting boss facing the first cover plate 1112, and the end of the insulating sleeve 11212 of the second stator block 1121b facing away from the second cover plate 1113 abuts against the side of the limiting boss facing the second cover plate 1113.

[0123] By adopting the above technical solution, it is easy to fix the stator body 112 between the first cover plate 1112 and the second cover plate 1113.

[0124] In some embodiments of this application, the insulating sleeve 11212 of the first stator block 1121a is welded to the first cover plate 1112.

[0125] In some other embodiments of this application, the insulating sleeve 11212 of the second stator block 1121b is welded to the second cover plate 1113.

[0126] In some other embodiments of this application, the insulating sleeve 11212 of the first stator block 1121a is welded to the first cover plate 1112, and the insulating sleeve 11212 of the second stator block 1121b is welded to the second cover plate 1113.

[0127] During the assembly of the stator 11, the stator body 112 can be fixedly installed on the support 1114 first, and then the first cover plate 1112 and the second cover plate 1113 can be respectively covered on the opposite sides of the housing 1111 along the axial direction of the stator 11. Then, the insulating sleeve 11212 of the first stator block 1121a is welded to the first cover plate 1112 and the insulating sleeve 11212 of the second stator block 1121b is welded to the second cover plate 1113 using a through welding process.

[0128] In some embodiments, the insulating sleeve 11212, the first cover plate 1112, and the second cover plate 1113 are made of the same material and are all plastic, so as to improve the welding strength between the insulating sleeve 11212 and the first cover plate 1112, and between the insulating sleeve 11212 and the second cover plate 1113.

[0129] In some other embodiments of this application, the insulating sleeve 11212 of the first stator block 1121a is bonded to the first cover plate 1112.

[0130] In some other embodiments of this application, the insulating sleeve 11212 of the second stator block 1121b is bonded to the second cover plate 1113.

[0131] In some other embodiments of this application, the insulating sleeve 11212 of the first stator block 1121a is bonded to the first cover plate 1112, and the insulating sleeve 11212 of the second stator block 1121b is bonded to the second cover plate 1113.

[0132] By adopting the above technical solution, it is convenient to fix the first stator block 1121a to the first cover plate 1112 and the second stator block 1121b to the second cover plate 1113.

[0133] In some embodiments of this application, please refer to FIG12. The insulating sleeve 11212 includes an insulating body 11215 sleeved on the iron core 11211 and a connecting boss 11216 connected to the insulating body 11215. The connecting boss 11216 protrudes from the insulating body 11215 along the axial direction of the stator 11. The connecting boss 11216 of the first stator block 1121a is fixedly connected to the first cover plate 1112, and the connecting boss 11216 of the second stator block 1121b is fixedly connected to the second cover plate 1113.

[0134] The insulating body 11215 is the main part of the insulating sleeve 11212. The insulating body 11215 is sleeved on the iron core 11211, and the winding is wound on the outer peripheral wall of the insulating body 11215. The connecting boss 11216 is used to connect to the first cover plate 1112 or the second cover plate 1113. The connecting boss 11216 protruding from the insulating body 11215 along the axis of the stator 11 means that when the stator 11 is in the assembled state, the connecting boss 11216 of the first stator block 1121a protrudes from the insulating body 11215 of the first stator block 1121a towards the first cover plate 1112, and the connecting boss 11216 of the second stator block 1121b protrudes from the insulating body 11215 of the second stator block 1121b towards the second cover plate 1113.

[0135] In some embodiments, the insulating body 11215 of the first stator block 1121a is welded to the first cover plate 1112 via the connecting boss 11216 of the first stator block 1121a, and the insulating body 11215 of the second stator block 1121b is welded to the second cover plate 1113 via the connecting boss 11216 of the second stator block 1121b. Specifically, the first cover plate 1112 and the second cover plate 1113 are respectively placed on opposite sides of the housing 1111 along the axial direction of the stator 11. Then, the connecting boss 11216 of the first stator block 1121a is heated and melted using a through-welding process, so that the insulating body 11215 of the first stator block 1121a is welded together with the first cover plate 1112. Similarly, the connecting boss 11216 of the second stator block 1121b is heated and melted using a through-welding process, so that the insulating body 11215 of the second stator block 1121b is welded together with the second cover plate 1113.

[0136] In other embodiments, the insulating body 11215 of the first stator block 1121a is bonded to the first cover plate 1112 via the connecting boss 11216 of the first stator block 1121a, and the insulating body 11215 of the second stator block 1121b is bonded to the second cover plate 1113 via the connecting boss 11216 of the second stator block 1121b. Specifically, adhesive can be applied to the connecting boss 11216 of the first stator block 1121a and the connecting boss 11216 of the second stator block 1121b, respectively. Then, the first cover plate 1112 and the second cover plate 1113 are respectively placed on opposite sides of the housing 1111 along the axial direction of the stator 11, so that the connecting boss 11216 of the first stator block 1121a is bonded to the first cover plate 1112 by adhesive, and the connecting boss 11216 of the second stator block 1121b is bonded to the second cover plate 1113.

[0137] By adopting the above technical solution, the connection strength between the first stator block 1121a and the first cover plate 1112 and the connection strength between the second stator block 1121b and the second cover plate 1113 are effectively improved, thereby further enhancing the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0138] In some embodiments of this application, please refer to FIG12, the protrusion height h of the connecting boss 11216 from the insulating body 11215 along the axial direction of the stator 11 is 0.1mm-1mm.

[0139] The protrusion height h of the connecting boss 11216 from the insulating body 11215 along the axis of the stator 11 can be determined according to actual application needs, and can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc.

[0140] By adopting the above technical solution, not only can the connection strength between the first stator block 1121a and the first cover plate 1112 and the connection strength between the second stator block 1121b and the second cover plate 1113 be effectively improved, but the problem of excessive air gap in the motor 10 can also be improved, thereby further enhancing the performance of the motor 10.

[0141] In some embodiments of this application, please refer to FIG12, the iron core 11211 includes a toothed portion 11213 and a shoe portion 11214, which are integrally connected.

[0142] The toothed portion 11213 is the main part of the iron core 11211, and the winding is wound on the toothed portion 11213. The shoe portion 11214 is connected to the toothed portion 11213. The shoe portion 11214 is not only used to restrict the winding on the toothed portion 11213, but also to reduce the magnetic resistance of the iron core 11211 and improve the magnetic field distribution.

[0143] The integral connection of the tooth 11213 and the boot 11214 means that after the tooth 11213 and the boot 11214 are connected into a whole, the tooth 11213 and the boot 11214 cannot be separated without damaging the connection between the tooth 11213 and the boot 11214.

[0144] In some embodiments, the iron core 11211 is integrally formed using a soft magnetic composite material through a die-casting process.

[0145] Of course, in other embodiments, the iron core 11211 can also be made of other magnetic materials, and the tooth 11213 and the boot 11214 can also be connected into a whole in other ways. For example, the tooth 11213 and the boot 11214 can be formed separately and then welded together into a whole.

[0146] By adopting the above technical solution, the structural stability of the iron core 11211 is effectively improved, thereby further enhancing the performance of the motor 10.

[0147] In some embodiments of this application, the insulating sleeve 11212 is welded to the support member 1114.

[0148] In some embodiments, the insulating sleeve 11212 is made of the same material as the support member 1114, and both are made of plastic, in order to improve the welding strength between the insulating sleeve 11212 and the support member 1114.

[0149] In some embodiments, the core 11211 of the first stator block 1121a is bonded to the first positioning groove 11141, the core 11211 of the second stator block 1121b is bonded to the second positioning groove 11142, the insulating sleeves 11212 of the first stator block 1121a and the insulating sleeves 11212 of the second stator block 1121b are both welded to the support member 1114, the insulating sleeves 11212 of the first stator block 1121a are also welded to the first cover plate 1112, and the insulating sleeves 11212 of the second stator block 1121b are also welded to the second cover plate 1113.

[0150] By adopting the above technical solution, it is easy to fix the stator block 1121 on the support member 1114, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0151] In some embodiments of this application, please refer to Figures 7 and 8 together. The inner peripheral wall of the housing 1111 is provided with a positioning part 11112, which is engaged with the support member 1114.

[0152] The positioning part 11112 is a part used to limit the relative position of the housing 1111 and the support member 1114 along the circumference of the stator 11.

[0153] In some embodiments, the positioning part 11112 has a protruding structure, that is, the positioning part 11112 protrudes from the inner peripheral wall of the housing 1111. Correspondingly, the support member 1114 is provided with a recess. For example, the outer peripheral wall of the connecting part 11143 is provided with a recess, and the positioning part 11112 is embedded in the recess of the support member 1114.

[0154] In other embodiments, the positioning part 11112 has a recessed structure, that is, the positioning part 11112 is recessed on the inner peripheral wall of the housing 1111. Correspondingly, the support member 1114 is provided with a protrusion. For example, the outer peripheral wall of the connecting part 11143 is provided with a protrusion, and the protrusion is embedded in the positioning part 11112.

[0155] In some other embodiments, there are multiple positioning portions 11112, some of which are protruding and others are recessed. Correspondingly, the support member 1114 is provided with protrusions and recesses. For example, the outer peripheral wall of the connecting portion 11143 is provided with protrusions and recesses. The positioning portion 11112 with a protruding structure is embedded in the recess of the support member 1114, and the protrusion of the support member 1114 is embedded in the positioning portion 11112 with a recessed structure.

[0156] By adopting the above technical solution, the relative position of the support member 1114 and the housing 1111 is effectively limited, the connection strength between the support member 1114 and the housing 1111 is improved, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0157] In some embodiments of this application, please refer to Figures 7 and 8 together. There are multiple positioning parts 11112, and the multiple positioning parts 11112 are evenly distributed along the circumference of the housing 1111.

[0158] The uniform distribution of multiple positioning parts 11112 along the circumference of the housing 1111 means that the distance between any two adjacent positioning parts 11112 is equal along the circumference of the housing 1111.

[0159] By adopting the above technical solution, the force on the support member 1114 along the circumference of the housing 1111 can be made more uniform, which further improves the connection strength between the support member 1114 and the housing 1111, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0160] In some embodiments of this application, the housing 1111 is a metal part and the support 1114 is an insulating part.

[0161] Understandably, the housing 1111 is made of a metal material, which may be, but is not limited to, aluminum alloy, stainless steel, aluminum, copper, iron, etc. The support 1114 is made of an insulating material, which may be, but is not limited to, plastic, rubber, ceramic, etc.

[0162] In some embodiments, the stator body 112 is fixedly mounted on the support member 1114 and is separated from the housing 1111.

[0163] By adopting the above technical solution, not only is the structural strength of the stator shell 111 effectively improved, but it also facilitates the insulation separation between the stator body 112 and the shell 1111.

[0164] In some embodiments of this application, the support 1114 is an injection molded part.

[0165] In some embodiments, the housing 1111 is provided with a liquid injection hole, and the molding mold can be placed in the cavity 11111 of the housing 1111. Then, slurry is injected into the liquid injection hole. The slurry enters the molding cavity of the molding mold through the liquid injection hole. After the slurry solidifies, it is demolded to form a support member 1114 in the housing 1111 and fix the support member 1114 to the housing 1111.

[0166] As an example, when the positioning part 11112 has a protruding structure, during the molding process of the support member 1114, the slurry can cover the positioning part 11112. After the slurry solidifies to form the support member 1114, the positioning part 11112 is embedded in the support member 1114.

[0167] As an example, when the positioning part 11112 has a recessed structure, during the molding process of the support member 1114, the slurry can enter the positioning part 11112. After the slurry solidifies to form the support member 1114, part of the support member 1114 is embedded in the positioning part 11112.

[0168] By adopting the above technical solution, it is easy to form a support member 1114 inside the housing 1111, which effectively simplifies the production process of the stator 11 and improves the production efficiency of the stator 11.

[0169] Secondly, referring to FIG4, this application provides an electric motor 10, including the stator 11 of any of the above embodiments.

[0170] The motor 10 provided in this application embodiment effectively improves the performance of the motor 10 by adopting the stator 11 of any of the above embodiments.

[0171] In some embodiments of this application, please refer to FIG4, the motor 10 further includes a first rotor 12 and a second rotor 13, which are respectively disposed on opposite sides of the stator 11 along the axial direction.

[0172] The first rotor 12 and the second rotor 13 are both rotating parts of the motor 10.

[0173] In some embodiments, referring to Figures 4, 6, and 11 together, the motor 10 further includes a rotating shaft, which is fixedly connected to the first rotor 12 and the second rotor 13. A through hole is formed in the middle of the stator 11, through which the rotating shaft passes. As an example, a first shaft hole is formed in the middle of the support member 1114, a second shaft hole is formed in the middle of the first cover plate 1112, and a third shaft hole is formed in the middle of the second cover plate 1113. The stator 11 also includes a cylinder 1115, which passes through the first shaft hole and is connected to the hole wall of the first shaft hole. One end of the cylinder 1115 is connected to the second shaft hole, and the other end of the cylinder 1115 is connected to the third shaft hole. The internal space of the cylinder 1115 forms the aforementioned through hole, that is, the rotating shaft passes through the cylinder 1115.

[0174] By adopting the above technical solution, the above motor 10 can be configured as a dual-rotor motor 10, which effectively improves the performance of the dual-rotor motor 10.

[0175] Thirdly, referring to Figure 3, this application provides an electric drive device 1, which includes the motor 10 described in any of the above embodiments.

[0176] The electric drive device 1 provided in this application embodiment effectively improves the performance of the electric drive device 1 by employing the motor 10 described in any of the above embodiments.

[0177] Fourthly, please refer to Figure 1. An embodiment of this application provides an electric drive system, including a battery 2 and the aforementioned electric drive device 1, wherein the battery 2 is electrically connected to the motor 10.

[0178] The electric drive system provided in this application embodiment effectively improves the performance of the electric drive system by adopting the above-mentioned electric drive device 1.

[0179] Fifthly, please refer to Figures 1 and 3 together. An embodiment of this application provides an electric device, including the electric drive device 1 or the electric drive system described above.

[0180] The electric equipment provided in this application embodiment effectively improves the performance of the electric equipment by adopting the above-mentioned electric drive device 1 or the above-mentioned electric drive system.

[0181] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A stator characterized by, The stator comprises: a stator shell comprising a shell body having a receiving cavity, a first cover plate and a second cover plate respectively fixed on opposite sides of the shell body along an axial direction of the stator to close the receiving cavity, and a support arranged in the receiving cavity and fixedly connected with the shell body; a stator main body accommodated in the receiving cavity and fixedly installed on the support, one side of the stator main body along the axial direction of the stator being fixedly connected with the first cover plate, and the other side of the stator main body along the axial direction of the stator being fixedly connected with the second cover plate.

2. The stator of claim 1, wherein The stator main body comprises a plurality of stator blocks and a plurality of windings, the plurality of stator blocks being divided into first stator blocks and second stator blocks, and the plurality of windings being divided into first windings wound around the first stator blocks and second windings wound around the second stator blocks, the first stator blocks being fixedly connected between the support and the first cover plate, and the second stator blocks being fixedly connected between the support and the second cover plate.

3. The stator of claim 2, wherein A first positioning groove is formed on one side of the support facing the first stator blocks, and the first stator blocks are inserted into the first positioning groove; and a second positioning groove is formed on one side of the support facing the second stator blocks, and the second stator blocks are inserted into the second positioning groove.

4. The stator of claim 3, wherein the first stator blocks are bonded in the first positioning grooves; and / or the second stator blocks are bonded in the second positioning grooves.

5. The stator of claim 3, wherein the number of the first stator blocks and the number of the first positioning grooves are both plural, and the plurality of first stator blocks and the plurality of first positioning grooves are arranged one-to-one in correspondence; and / or the number of the second stator blocks and the number of the second positioning grooves are both plural, and the plurality of second stator blocks and the plurality of second positioning grooves are arranged one-to-one in correspondence.

6. The stator of claim 3, wherein the first positioning grooves and the second positioning grooves are in communication with each other along the axial direction of the stator, and one end of the first stator blocks facing away from the first cover plate abuts against one end of the second stator blocks facing away from the second cover plate.

7. The stator of claim 2, wherein The stator block comprises an iron core and an insulation sleeve sleeved on the iron core, the insulation sleeve of the first stator block is fixedly connected with the first cover plate, and the insulation sleeve of the second stator block is fixedly connected with the second cover plate.

8. The stator of claim 7, wherein the insulation sleeve of the first stator block is welded or bonded with the first cover plate; and / or the insulation sleeve of the second stator block is welded or bonded with the second cover plate.

9. The stator of claim 8, wherein The insulation sleeve comprises an insulation main body sleeved on the iron core and a connecting boss connected to the insulation main body, the connecting boss is protruded from the insulation main body along the axial direction of the stator, the connecting boss of the first stator block is fixedly connected with the first cover plate, and the connecting boss of the second stator block is fixedly connected with the second cover plate.

10. The stator of claim 9, wherein The protruding height of the connecting boss from the insulation main body along the axial direction of the stator is 0.1mm-1mm.

11. The stator of claim 7, wherein The iron core comprises a tooth portion and a shoe portion, and the tooth portion and the shoe portion are integrally connected.

12. The stator of claim 7, wherein The insulating sleeve is welded with the support.

13. The stator of any one of claims 1-12, wherein, An inner circumferential wall of the shell is provided with a positioning portion, and the positioning portion is embedded with the support.

14. The stator of claim 13, wherein The number of the positioning portions is multiple, and the multiple positioning portions are uniformly distributed along the circumference of the shell.

15. The stator of any one of claims 1-12, wherein, The shell is a metal piece, and the support is an insulating piece.

16. The stator of any one of claims 1-12, wherein, The support is an injection molded piece.

17. An electric machine characterized by The motor comprises the stator according to any one of claims 1-16.

18. The electric machine of claim 17, wherein, The motor further comprises a first rotor and a second rotor, and the first rotor and the second rotor are respectively arranged on opposite sides of the stator along the axial direction.

19. An electric drive device, characterized by The electric driving device comprises the motor according to claim 17 or 18.

20. An electric drive system, characterized by The electric driving system comprises a battery and the electric driving device according to claim 19, and the battery is electrically connected with the motor.

21. An electrically powered device, characterized by The electric device comprises the electric driving device according to claim 19 or the electric driving system according to claim 20.

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