Stator, motor, electric driving device, electric driving system and electric equipment

Abstract

The utility model provides a stator, a motor, an electric driving device, an electric driving system and electric equipment.The stator comprises a stator shell and a stator body, the stator shell comprises a shell, a first cover plate, a second cover plate and a supporting piece, the shell is provided with a containing cavity, and the first cover plate and the second cover plate are fixedly arranged on the two opposite sides of the shell in the axis direction of the stator respectively; the shell is provided with a containing cavity to seal the containing cavity, the supporting piece is arranged in the containing cavity and fixedly connected with the shell, the stator body is contained in the containing cavity and fixedly installed on the supporting piece, the side, in the axis direction of the stator, of the stator body is fixedly connected with the first cover plate, and the other side, in the axis direction of the stator, of the stator body is fixedly connected with the second cover plate. According to the stator provided by the invention, the installation stability of the stator main body can be improved, and the thickness of the first cover plate and the thickness of the second cover plate can be reduced, so that the air gap of the motor can be reduced, and the performance of the motor is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a stator, a motor, an electric drive device, an electric drive system and an electric device. Background Art

[0002] With increasing environmental pollution, new energy vehicles are gaining popularity. Electric drive systems, as the power units of new energy vehicles, convert the electrical energy provided by the battery into mechanical energy to propel the vehicle. Improving the performance of electric motors, the core components of electric drive systems, is a pressing technical challenge in electric drive technology. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a motor, an electric drive device, an electric drive system and an electric device to solve the technical problem of poor performance of motors in related technologies.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is to provide a stator, comprising:

[0005] The stator case comprises a shell, a first cover plate, a second cover plate and a support member. The shell has a cavity. The first cover plate and the second cover plate are respectively fixed to opposite sides of the shell along the axial direction of the stator to close the cavity. The support member is disposed in the cavity and fixedly connected to the shell.

[0006] The stator body is accommodated in the cavity and fixedly mounted on the support member. 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.

[0007] The stator provided by the embodiment of the present application has at least the following beneficial effects: a support member is provided in the shell of the stator provided by the embodiment of the present application, the support member is fixedly connected to the shell, and the first cover plate and the second cover plate are respectively fixed on the opposite sides of the shell 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. In this way, not only the installation stability of the stator body can be improved, but also during the operation of the motor, the torque borne by the stator body can be transmitted to the shell not only through the first cover plate and the second cover plate, but also through the support member. In this way, the strength requirements for the first cover plate and the second cover plate can be reduced, the thickness of the first cover plate and the thickness of the second cover plate can be reduced, thereby reducing the air gap of the motor and effectively improving the performance of the motor.

[0008] In some embodiments of the present 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 around the first stator block and a second winding wound around 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.

[0009] By adopting the above technical solution, the first stator block and the first winding can constitute a part of the stator body, and the second stator block and the second winding can constitute another part of the stator body. The two parts of the stator body can work independently of each other. When one part of the stator body fails to work normally, the stator can still rely on the other part of the stator body to continue working, realizing the redundant design of the stator, effectively improving the reliability of the stator, and thus further improving the performance of the motor.

[0010] In some embodiments of the present application, a first positioning groove is provided on a 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 a side of the support member facing the second stator block, and the second stator block is inserted into the second positioning groove.

[0011] By adopting the above technical solution, the positions of the first stator block and the second stator block are effectively restricted, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0012] In some embodiments of the present application, the first stator block is bonded into the first positioning groove; and / or the second stator block is bonded into the second positioning groove.

[0013] By adopting the above technical solution, the positions of the first stator block and the second stator block can be more 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 the present application, the number of first stator blocks and the number of first positioning slots are both multiple, and the multiple first stator blocks are arranged 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 arranged in a one-to-one correspondence with the multiple second positioning slots.

[0015] 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.

[0016] In some embodiments of the present application, the first positioning groove and the second positioning groove are connected to each other along the axial direction of the stator, and an end of the first stator block facing away from the first cover plate abuts against an end of the second stator block facing away from the second cover plate.

[0017] By adopting the above technical solution, not only the relative position of the first stator block and the second stator block can be effectively limited, but also the integrity of the stator body is effectively improved, and the vibration of the stator body during operation is improved, thereby further improving the performance of the motor.

[0018] In some embodiments of the present application, the stator block includes an iron core and an insulating sleeve sleeved on the iron core. The insulating sleeve of the first stator block is fixedly connected to the first cover plate, and the insulating sleeve of the second stator block is fixedly connected to the second cover plate.

[0019] By adopting the above technical solution, it is convenient to fix the stator body between the first cover plate and the second cover plate.

[0020] In some embodiments of the present 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.

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

[0022] In some embodiments of the present application, the insulating sleeve includes an insulating body that is 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.

[0023] 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 improving the installation stability of the stator body and further improving the performance of the motor.

[0024] In some embodiments of the present application, a protrusion height of the connecting boss from the insulating body along the axial direction of the stator is 0.1 mm-1 mm.

[0025] By adopting the above technical solution, not only 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, but also the problem of excessive air gap of the motor can be improved, thereby further improving the performance of the motor.

[0026] In some embodiments of the present application, the iron core includes a tooth portion and a shoe portion, and the tooth portion and the shoe portion are integrally connected.

[0027] By adopting the above technical solution, the structural stability of the iron core is effectively improved, thereby further improving the performance of the motor.

[0028] In some embodiments of the present application, the insulating sleeve is welded to the support member.

[0029] By adopting the above technical solution, it is convenient to fix the stator block on the support member, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0030] In some embodiments of the present application, a positioning portion is provided on the inner peripheral wall of the shell, and the positioning portion is embedded in the support member.

[0031] By adopting the above technical solution, the relative position of the support member and the housing is effectively restricted, and the connection strength between the support member and the housing is improved, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0032] In some embodiments of the present application, there are multiple positioning portions, and the multiple positioning portions are evenly distributed along the circumference of the shell.

[0033] By adopting the above technical solution, the force on the support member along the circumference of the shell can be made more uniform, further improving the connection strength between the support member and the shell, thereby further improving the installation stability of the stator body and further improving the performance of the motor.

[0034] In some embodiments of the present application, the housing is a metal member, and the support member is an insulating member.

[0035] This not only effectively improves the structural strength of the stator housing, but also facilitates the insulation and separation of the stator body from the housing. The present application also provides a motor comprising the stator of any of the above embodiments.

[0036] In some embodiments of the present application, the support member is an injection-molded member.

[0037] By adopting the above technical solution, it is convenient to form the support member in the housing, which effectively simplifies the production process of the stator and improves the production efficiency of the stator.

[0038] The motor provided by the embodiments of the present application has at least the following beneficial effects: the motor provided by the embodiments of the present application effectively improves the performance of the motor due to the adoption of the stator of any of the above embodiments.

[0039] In some embodiments of the present application, the motor further includes a first rotor and a second rotor, and the first rotor and the second rotor are disposed on opposite sides of the stator along the axial direction.

[0040] By adopting the above technical solution, the above motor can be made into a dual-rotor motor, which effectively improves the performance of the dual-rotor motor.

[0041] An embodiment of the present application further provides an electric drive device, comprising the motor described in any one of the above embodiments.

[0042] The electric drive device provided by the embodiments of the present application has at least the following beneficial effects: the electric drive device provided by the embodiments of the present application effectively improves the performance of the electric drive device because it adopts the motor described in any of the above embodiments.

[0043] An embodiment of the present application further provides an electric drive system, comprising a battery and the above-mentioned electric drive device, wherein the battery is electrically connected to the motor.

[0044] The electric drive system provided by the embodiment of the present application has at least the following beneficial effects: the electric drive system provided by the embodiment of the present application effectively improves the performance of the electric drive system due to the adoption of the above-mentioned electric drive device.

[0045] An embodiment of the present application further provides an electric device, comprising the above-mentioned electric drive device or the above-mentioned electric drive system.

[0046] The electric device provided by the embodiment of the present application has at least the following beneficial effects: the electric device provided by the embodiment of the present application effectively improves the performance of the electric device due to the adoption of the above-mentioned electric drive device or the above-mentioned electric drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0048] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of the explosion structure of a battery provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of the structure of the electric drive device provided in an embodiment of the present application;

[0051] Figure 4 A schematic diagram of the structure of a motor provided in an embodiment of the present application;

[0052] Figure 5 for Figure 4 A schematic structural diagram of a stator in the motor shown;

[0053] Figure 6 for Figure 5 The exploded structural diagram of the stator is shown;

[0054] Figure 7 for Figure 6 A schematic structural diagram of the housing in the stator shown;

[0055] Figure 8 for Figure 6 A schematic structural diagram of a support member in the stator shown;

[0056] Figure 9 for Figure 6 A schematic structural diagram of a stator block in the stator shown;

[0057] Figure 10 for Figure 5 The main structural diagram of the stator shown;

[0058] Figure 11 for Figure 10 The cross-sectional structural diagram of the stator along the AA line is shown;

[0059] Figure 12 for Figure 11 The enlarged structural diagram of the stator at point B is shown.

[0060] Among them, the reference numerals in the figures are:

[0061] 1. Electric drive device;

[0062] 10. Motor; 11. Stator; 111. Stator case; 1111. Housing; 11111. Receptacle; 11112. Positioning portion; 1112. First cover plate; 1113. Second cover plate; 1114. Support member; 11141. First positioning groove; 11142. Second positioning groove; 11143. Connecting portion; 11144. Supporting portion; 1115. Cylinder; 112. Stator body; 1121. Stator block; 1121a. First stator block; 1121b. Second stator block; 11211. Iron core; 11212. Insulating sleeve; 11213. Tooth portion; 11214. Boot; 11215. Insulating body; 11216. Connecting boss; 12. First rotor; 13. Second rotor;

[0063] 20. Controller;

[0064] 30. Speed ​​changing mechanism;

[0065] 2. Battery;

[0066] 21. Box body; 211. First part; 212. Second part;

[0067] 22. Battery cells;

[0068] 3. Vehicle body. DETAILED DESCRIPTION

[0069] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0070] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0071] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0072] 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 quantity of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0073] An electric drive is the power unit of an electric device, and the motor is its core component, converting electrical energy into mechanical energy. A motor typically consists of a stator and a rotor. The stator consists of a stator housing and a stator body, which is fixedly mounted within the stator housing. During motor operation, current flows through the stator body, generating a magnetic field. This magnetic field creates a magnetic coupling between the rotor and the stator body, driving the rotor's rotation.

[0074] In the related art, the stator case usually includes a shell and two cover plates. The shell has a cavity for accommodating the stator body. The two cover plates are respectively fixed on opposite sides of the shell along the axial direction of the stator to close the cavity. The stator body is fixedly connected to the two cover plates. During the operation of the motor, due to the interaction force between the stator body and the rotor, when the rotor rotates, the stator body will be subjected to a large torque, and the torque borne by the stator body will be transmitted to the shell through the two cover plates. Therefore, the structural strength of the two cover plates needs to meet higher requirements. At present, the structural strength of the two cover plates is mainly improved by increasing the thickness of the two cover plates, but this will cause the air gap between the stator body and the rotor to increase, which is not conducive to improving the performance of the motor.

[0075] In order to improve the performance of the motor, a support member is provided in the shell of the stator provided in the embodiment of the present application, and the support member is fixedly connected to the shell. 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. In this way, not only the installation stability of the stator body can be improved, but also during the operation of the motor, the torque borne by the stator body can be transmitted to the shell not only through the first cover plate and the second cover plate, but also through the support member. This can reduce the strength requirements of the first cover plate and the second cover plate, reduce the thickness of the first cover plate and the second cover plate, thereby reducing the air gap of the motor and effectively improving the performance of the motor.

[0076] The technical solutions described in the embodiments of the present application are applicable to motors, electric drive devices using motors, and electric devices using electric drive devices. Among them, electric devices can be, but are not limited to, vehicles, ships, spacecraft, and electric toys, etc. Vehicles can be fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include aircraft, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as electric car toys, electric ship toys, and electric airplane toys, etc.

[0077] For the convenience of description, the following embodiments are described by taking the electric device of one embodiment of the present application as a vehicle as an example.

[0078] See also Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application. 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 accommodate the electric drive unit 1, and the passenger compartment is used to provide 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, that is, 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, that is, 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. The number of electric drive units 1 can be two, with two electric drive units 1 located in the front and rear engine compartments respectively. The battery 2 and the electric drive unit 1 together constitute the vehicle's electric drive system. The battery 2 can be located at the bottom, front, or rear of the vehicle and can be used to power the electric drive unit 1 to drive its operation. The electric drive device 1 is used to convert the electrical energy provided by the battery 2 into mechanical energy and output the mechanical energy to the wheels of the vehicle to drive the vehicle.

[0079] See also Figure 2 , Figure 2 This is an exploded diagram of a battery 2 provided in an embodiment of the present application. The battery 2 includes a housing 21 and a battery cell 22, with the battery cell 22 being housed within the housing 21. The housing 21 is used to provide a storage space for the battery cell 22, and the housing 21 can have a variety of structures. In some embodiments, the housing 21 can include a first portion 211 and a second portion 212, which cover each other and together define a storage space for the battery cell 22. The second portion 212 can be a hollow structure with one end open, and the first portion 211 can be a plate-like structure. The first portion 211 covers the open side of the second portion 212, so that the first portion 211 and the second portion 212 together define a storage space. The first portion 211 and the second portion 212 can also be hollow structures with one end open, 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 together define a storage space. Of course, the box body 21 formed by the first part 211 and the second part 212 can be in various shapes, such as a cylinder, a cuboid, etc., which is not specifically limited here.

[0080] In some embodiments, the box 21 can be used as a part of the chassis structure of the vehicle. For example, part of the box 21 can become at least a part of the floor of the vehicle, or part of the box 21 can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0081] Of course, in some embodiments, the battery 2 may not include the box body 21 , but rather a plurality of battery cells 22 may be electrically connected and formed into a whole through necessary fixing structures before being assembled into a vehicle.

[0082] The battery 2 may include multiple battery cells 22, which may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the battery cells 22. The battery cells 22 may be directly connected in series, in parallel, or in a hybrid configuration, and the entire battery cell 22 may then be housed within the housing 21. Alternatively, the battery 2 may include multiple battery cells 22 connected in series, in parallel, or in a hybrid configuration to form a battery module, which is then further connected in series, in parallel, or in a hybrid configuration to form a single unit housed within the housing 21. The battery 2 may also include other functional components, such as a busbar for electrically connecting the multiple battery cells 22.

[0083] Each battery cell 22 may 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 the active material after the battery cell 22 is discharged and can continue to be used. A primary battery cell refers to a battery cell 22 that cannot be recharged to activate the active material after the battery cell 22 has exhausted its electrical energy and can continue to be used. The battery cell 22 may 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-hydrogen battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc., but is not limited thereto. The battery cell 22 may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or a battery cell 22 of another shape. Prismatic battery cells include square-shell battery cells, blade-shaped battery cells, and polygonal prismatic battery cells. Polygonal prismatic battery cells, for example, hexagonal prismatic battery cells, are not particularly limited in this application.

[0084] See also Figure 3 , Figure 3Schematic diagram of the structure of the electric drive device 1 provided in an embodiment of the present application. The electric drive device 1 includes a motor 10, which is used to convert the electrical energy provided by the battery 2 into mechanical energy. Specifically, the motor 10 generally 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, the number of motors 10 is two, and the two motors 10 are coaxially arranged, that is, the central axes of the two motors 10 coincide with each other, and the "central axis" of the motor 10 refers to the axial center line of the rotating shaft (or "rotor shaft") of the motor 10. For example, the rotating shaft of one motor 10 is connected to one of the left front wheel and the right front wheel of the vehicle, and the rotating shaft of the other motor 10 is connected to the other of the left front wheel and the right front wheel of the vehicle. Alternatively, the rotating shaft of one motor 10 is connected to one of the left rear wheel and the right rear wheel of the vehicle, and the rotating shaft of the other motor 10 is connected to the other of the left rear wheel and the right rear wheel of the vehicle. During operation of the electric drive device 1, the rotational speeds of the two motors 10 can be the same or different.

[0085] Of course, in other embodiments, the number of motor 10 may also be one.

[0086] In some embodiments, the electric drive device 1 may further include a controller 20. The controller 20 is configured 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 configured to control the operation of the motor 10. For example, the controller 20 is configured to control the start / stop, speed, torque, etc. of the motor 10. In other words, the motor 10 and the battery 2 are both electrically connected to the controller 20. The direct current output by the battery 2 may be transmitted to the controller 20 via a 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 may be transmitted to the motor 10 via a current transmission path between the controller 20 and the motor 10 to drive the motor 10 to operate. At the same time, control signals from the controller 20 may be transmitted to the motor 10 via the current transmission path between the controller 20 and the motor 10. An operating status signal of the motor 10 may also be transmitted to the controller 20 via the current transmission path between the controller 20 and the motor 10, enabling the controller 20 to control the operation of the motor 10.

[0087] In some embodiments, the electric drive device 1 may further include a speed change mechanism 30, which is used to transmit the mechanical energy to the vehicle's wheels by changing the speed and torque of the motor 10. For example, the speed change mechanism 30 transmits the mechanical energy to the vehicle's wheels by reducing the speed of the motor 10 and increasing the torque of the motor 10. In another example, the speed change mechanism 30 transmits the mechanical energy to the vehicle's wheels by increasing the speed of the motor 10 and reducing the torque of the motor 10. The speed change mechanism 30 may be, but is not limited to, a pinion speed change mechanism, a worm speed change mechanism, a planetary gear speed change mechanism, a continuously variable speed change mechanism, or the like.

[0088] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0089] First, please refer to Figures 5 to 12 The embodiment of the present application provides a stator 11, comprising a stator case 111 and a stator body 112. The stator case 111 comprises 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 fixed to 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 in the cavity 11111 and fixedly connected to the shell 1111. The stator body 112 is accommodated in the cavity 11111 and fixedly mounted on the support member 1114. The stator body 112 is fixedly connected to the first cover plate 1112 on one side along the axial direction of the stator 11, and is fixedly connected to the second cover plate 1113 on the other side along the axial direction of the stator 11.

[0090] The housing 1111 is the main body of the stator housing 111. It provides an internal environment for the stator housing 111. At least a portion of this internal environment constitutes the aforementioned cavity 11111, which is used to accommodate the stator body 112. The housing 1111 can be a one-piece component or an assembled component composed of multiple parts. The material of the housing 1111 can include, but is not limited to, aluminum alloy, stainless steel, aluminum, copper, iron, plastic, and the like.

[0091] The first cover plate 1112 and the second cover plate 1113 are covered on the housing 1111 to isolate the internal environment from the external environment of the stator case 111 .

[0092] In some embodiments, the shell 1111 has an annular structure, and the inner annular space of the shell 1111 constitutes the above-mentioned internal environment. The first cover plate 1112 is provided on an open side of the shell 1111 along the axial direction of the stator 11, and the second cover plate 1113 is provided on the other open side of the shell 1111 along the axial direction of the stator 11 to isolate the above-mentioned internal environment from the external environment of the stator shell 111.

[0093] In some embodiments, the first cover plate 1112 and the second cover plate 1113 are both sealedly connected to the housing 1111. As an example, the first cover plate 1112 is welded or bonded to the housing 1111. As an example, the first cover plate 1112 is connected to the housing 1111 by fasteners such as bolts and rivets, and a seal is provided at the connection between the first cover plate 1112 and the housing 1111. As an example, the second cover plate 1113 is welded or bonded to the housing 1111. As an example, the second cover plate 1113 is connected to the housing 1111 by fasteners such as bolts and rivets, and a seal is provided at the connection between the second cover plate 1113 and the housing 1111.

[0094] The support member 1114 is used to provide support force 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 of the support member 1114 and the housing 1111 can be, but is not limited to, welding, bonding, fastening connection, etc. In some embodiments, the support member 1114 includes a connecting portion 11143 and a supporting portion 11144, the housing 1111 and the connecting portion 11143 are both annular structures, 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 support portion 11144. The connecting portion 11143 and the supporting portion 11144 may be integrally formed components, or the connecting portion 11143 and the supporting portion 11144 may be formed separately and then connected to each other into a whole.

[0095] The stator body 112 is the core component of the stator 11, and the stator body 112 is used to generate a magnetic field. The stator body 112 is fixedly mounted on the support 1114. The stator body 112 can be fixedly mounted on the support 1114 by other components, or a necessary fixing structure can be provided on the stator body 112 and / or the support 1114, and the stator body 112 is fixedly mounted on the support 1114 by the fixing structure. 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 fixed connection method between the stator body 112 and the first cover plate 1112 can be, but is not limited to, welding, bonding, and fastening connection. The fixed connection method between the stator body 112 and the second cover plate 1113 can be, but is not limited to, welding, bonding, and fastening connection.

[0096] In some embodiments, the support member 1114 is arranged in 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 arranged 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 balanced force along the axial direction of the stator 11.

[0097] In the stator 11 provided in the embodiment of the present application, a support member 1114 is provided in the housing 1111, and 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 provided on opposite sides of the housing 1111 along the axial direction of the stator 11. The stator body 112 is not only fixedly mounted 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 the installation stability of the stator body 112 can 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. In this way, the strength requirements for the first cover plate 1112 and the second cover plate 1113 can be reduced, the thickness of the first cover plate 1112 and the second cover plate 1113 can be reduced, thereby reducing the air gap of the motor 10, and effectively improving the performance of the motor 10.

[0098] In some embodiments of this application, please refer to Figure 6 、 Figure 11 and Figure 12The stator body 112 includes multiple stator blocks 1121 and multiple windings. The multiple stator blocks 1121 are divided into a first stator block 1121a and a second stator block 1121b. The multiple windings are divided into a first winding wound around the first stator block 1121a and a second winding wound around 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.

[0099] The windings are components for generating a magnetic field, and the stator block 1121 is a component for conducting this magnetic field. Specifically, the windings are wound around the stator block 1121. During operation of the motor 10, current is passed through the windings to generate a magnetic field. The stator block 1121 conducts this magnetic field and causes it to act on the rotor of the motor 10, driving the rotor to rotate.

[0100] In some embodiments, the number of first stator blocks 1121a and the number of first windings are both multiple, the multiple first stator blocks 1121a are arranged around the axis of the stator 11, and the multiple first windings are wound one-to-one on the multiple first stator blocks 1121a to constitute a part of the stator body 112; the number of second stator blocks 1121b and the number of second windings are both multiple, the multiple second stator blocks 1121b are arranged around the axis of the stator 11, and the multiple second windings are wound one-to-one on the multiple second stator blocks 1121b to constitute another part of the stator body 112. The two parts of the stator body 112 operate independently of each other.

[0101] As an example, the support member 1114 is arranged between the two parts of the stator body 112, and the two parts of the stator body 112 are fixedly mounted 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.

[0102] By adopting the above technical solution, the first stator block 1121a and the first winding can constitute a part of the stator body 112, and the second stator block 1121b and the second winding can constitute another part of the stator body 112. The two parts of the stator body 112 can work independently of each other. When one part of the stator body 112 fails to work normally, the stator 11 can still rely on the other part of the stator body 112 to continue working, realizing the redundant design of the stator 11, effectively improving the reliability of the stator 11, and thus further improving the performance of the motor 10.

[0103] In some embodiments of this application, please refer to Figure 12A first positioning groove 11141 is defined on the side of the support member 1114 facing the first stator block 1121a, and the first stator block 1121a is inserted into the first positioning groove 11141. A second positioning groove 11142 is defined on the side of the support member 1114 facing the second stator block 1121b, and the second stator block 1121b is inserted into the second positioning groove 11142.

[0104] The side of the support member 1114 facing the first stator block 1121a is recessed along the axial direction of the stator 11 to form the aforementioned first positioning groove 11141. The first stator block 1121a is inserted into the first positioning groove 11141 to restrict movement of the first stator block 1121a in a direction perpendicular to the axial direction of the stator 11. It will be understood that the inner circumferential contour of the first positioning groove 11141 matches the outer circumferential contour of the end of the first stator block 1121a facing the support member 1114. For example, both the inner circumferential contour of the first positioning groove 11141 and the outer circumferential contour of the end of the first stator block 1121a facing the support member 1114 may be trapezoidal.

[0105] The side of the support member 1114 facing the second stator block 1121b is recessed along the axial direction of the stator 11 to form the aforementioned second positioning groove 11142. The second stator block 1121b is inserted into the second positioning groove 11142 to restrict movement of the second stator block 1121b in a direction perpendicular to the axial direction of the stator 11. It will be understood that the inner circumferential contour of the second positioning groove 11142 matches the outer circumferential contour of the end of the second stator block 1121b facing the support member 1114. For example, both the inner circumferential contour of the second positioning groove 11142 and the outer circumferential contour of the end of the second stator block 1121b facing the support member 1114 may be trapezoidal.

[0106] By adopting the above technical solution, the positions of the first stator block 1121 a and the second stator block 1121 b are effectively restricted, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10 .

[0107] In some embodiments of the present application, the first stator block 1121 a is bonded into the first positioning groove 11141 .

[0108] As an example, adhesive can be first applied to the end of the first stator block 1121a facing the support member 1114 and / or the slot 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 end of the first stator block 1121a facing the support member 1114 is bonded to the slot wall of the first positioning groove 11141 by the adhesive.

[0109] As an example, an adhesive film can be first attached to the end of the first stator block 1121a facing the support member 1114 and / or the slot 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 end of the first stator block 1121a facing the support member 1114 is bonded to the slot wall of the first positioning groove 11141 through the adhesive film.

[0110] 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 through the adhesive.

[0111] In some other embodiments of the present application, the second stator block 1121 b is bonded into the second positioning groove 11142 .

[0112] As an example, adhesive can be first applied to the end of the second stator block 1121b facing the support member 1114 and / or the slot 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 slot wall of the second positioning groove 11142 by the adhesive.

[0113] As an example, an adhesive film can be first attached to the end of the second stator block 1121b facing the support member 1114 and / or the slot 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 slot wall of the second positioning groove 11142 through the adhesive film.

[0114] As an example, the second stator block 1121b can be first inserted into the second positioning groove 11142, 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 through the adhesive.

[0115] In some other embodiments of the present application, the first stator block 1121 a is bonded into the first positioning groove 11141 , and the second stator block 1121 b is bonded into the second positioning groove 11142 .

[0116] By adopting the above technical solution, the positions of the first stator block 1121a and the second stator block 1121b can be more effectively limited, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0117] In some embodiments of this application, please refer to Figure 6and Figure 8 The number of the first stator blocks 1121 a and the number of the first positioning slots 11141 are both multiple, and the multiple first stator blocks 1121 a and the multiple first positioning slots 11141 are arranged in a one-to-one correspondence.

[0118] In other embodiments of this application, please refer to Figure 6 and Figure 8 The number of the second stator blocks 1121 b and the number of the second positioning slots 11142 are both multiple, and the multiple second stator blocks 1121 b and the multiple second positioning slots 11142 are arranged in a one-to-one correspondence.

[0119] In some other embodiments of this application, please refer to Figure 6 and Figure 8 The number of the first stator blocks 1121a and the number of the first positioning grooves 11141 are both multiple, and the multiple first stator blocks 1121a are arranged in a one-to-one correspondence with the multiple first positioning grooves 11141. The number of the second stator blocks 1121b and the number of the second positioning grooves 11142 are both multiple, and the multiple second stator blocks 1121b are arranged in a one-to-one correspondence with the multiple second positioning grooves 11142.

[0120] In some embodiments, the plurality of first positioning grooves 11141 and the plurality of second positioning grooves 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 grooves 11141 and the plurality of second positioning grooves 11142 can also be arranged in a staggered manner along the circumference of the stator 11.

[0121] By adopting the above technical solution, the positions of each first stator block 1121a and each second stator block 1121b are effectively restricted, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0122] In some embodiments of this application, please refer to Figure 12 The first positioning groove 11141 and the second positioning groove 11142 are connected to each other along the axis direction of the stator 11, and 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.

[0123] It can be understood that the first positioning groove 11141 and the second positioning groove 11142 are connected to each other along the axial direction of the stator 11 to form a positioning space, and 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, and 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, and 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 are abutted against each other in the positioning space. It should be noted that the abutment between one end of the first stator block 1121a facing away from the first cover plate 1112 and one 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 one end of the first stator block 1121a facing away from the first cover plate 1112 and the one end of the second stator block 1121b facing away from the second cover plate 1113 may be in direct contact or indirect contact, so that the first stator block 1121a and the second stator block 1121b cannot move toward each other along the axial direction of the stator 11.

[0124] By adopting the above technical solution, not only can the relative position of the first stator block 1121a and the second stator block 1121b be effectively limited, but also the integrity of the stator body 112 is effectively improved, and the vibration of the stator body 112 during operation is improved, thereby further improving the performance of the motor 10.

[0125] In some embodiments of this application, please refer to Figure 9 、 Figure 11 and Figure 12 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.

[0126] The iron core 11211 is a component for conducting a magnetic field, and the insulating sleeve 11212 is a component for insulating and separating the winding from the iron core 11211. Specifically, the insulating sleeve 11212 is mounted on the iron core 11211, and the winding is wound around the outer circumferential 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.

[0127] 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 axis of the stator 11.

[0128] In some embodiments, the first positioning groove 11141 and the second positioning groove 11142 are connected to each other along the axial direction of the stator 11, and a limiting boss is provided at the connection point 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, and 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, one end of the iron core 11211 of the first stator block 1121a facing away from the first cover plate 1112 and one end of the iron core 11211 of the second stator block 1121b facing away from the second cover plate 1113 pass through the limiting boss and abut against each other. One 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. One 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.

[0129] By adopting the above technical solution, it is convenient to fix the stator body 112 between the first cover plate 1112 and the second cover plate 1113 .

[0130] In some embodiments of the present application, the insulating sleeve 11212 of the first stator block 1121 a is welded to the first cover plate 1112 .

[0131] In some other embodiments of the present application, the insulating sleeve 11212 of the second stator block 1121 b is welded to the second cover plate 1113 .

[0132] In some other embodiments of the present application, the insulating sleeve 11212 of the first stator block 1121 a is welded to the first cover plate 1112 , and the insulating sleeve 11212 of the second stator block 1121 b is welded to the second cover plate 1113 .

[0133] During the assembly process of the stator 11, the stator body 112 can be first fixedly installed on the support member 1114, and then the first cover plate 1112 and the second cover plate 1113 are respectively covered on opposite sides of the shell 1111 along the axial direction of the stator 11, and 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 penetration welding process.

[0134] In some embodiments, the material of the insulating sleeve 11212 , the material of the first cover plate 1112 , and the material of the second cover plate 1113 are the same and are all plastic, so as to improve the welding strength between the insulating sleeve 11212 and the first cover plate 1112 and the insulating sleeve 11212 and the second cover plate 1113 .

[0135] In some further embodiments of the present application, the insulating sleeve 11212 of the first stator block 1121 a is bonded to the first cover plate 1112 .

[0136] In some further embodiments of the present application, the insulating sleeve 11212 of the second stator block 1121 b is bonded to the second cover plate 1113 .

[0137] In some further embodiments of the present application, the insulating sleeve 11212 of the first stator block 1121 a is bonded to the first cover plate 1112 , and the insulating sleeve 11212 of the second stator block 1121 b is bonded to the second cover plate 1113 .

[0138] By adopting the above technical solution, it is convenient to fix the first stator block 1121 a to the first cover plate 1112 and to fix the second stator block 1121 b to the second cover plate 1113 .

[0139] In some embodiments of this application, please refer to Figure 12 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.

[0140] The insulating body 11215 is the main portion of the insulating sleeve 11212. The insulating body 11215 is sleeved onto the iron core 11211, and the winding is wound around the outer circumferential 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 protrudes from the insulating body 11215 along the axis of the stator 11. When the stator 11 is assembled, the connecting boss 11216 of the first stator block 1121a protrudes from the insulating body 11215 of the first stator block 1121a toward the first cover plate 1112, while the connecting boss 11216 of the second stator block 1121b protrudes from the insulating body 11215 of the second stator block 1121b toward the second cover plate 1113.

[0141] 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 covered on opposite sides of the shell 1111 along the axial direction of the stator 11, and then the connecting boss 11216 of the first stator block 1121a is heated and melted by a penetration 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 by a penetration welding process, so that the insulating body 11215 of the second stator block 1121b is welded together with the second cover plate 1113.

[0142] In other embodiments, the insulating body 11215 of the first stator block 1121a is bonded to the first cover plate 1112 via the connecting bosses 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 bosses 11216 of the second stator block 1121b. Specifically, adhesive can be applied to the connecting bosses 11216 of the first stator block 1121a and the connecting bosses 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 axis of the stator 11, so that the connecting bosses 11216 of the first stator block 1121a and the first cover plate 1112 are bonded together via the adhesive, and the connecting bosses 11216 of the second stator block 1121b and the second cover plate 1113 are bonded together.

[0143] 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 improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0144] In some embodiments of this application, please refer to Figure 12 The protruding height h of the connecting boss 11216 from the insulating body 11215 along the axial direction of the stator 11 is 0.1 mm-1 mm.

[0145] The protruding height h of the connecting boss 11216 from the insulating body 11215 along the axial direction of the stator 11 can be determined according to actual application requirements, and can be specifically 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc.

[0146] By adopting the above technical solution, not only 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, but also the situation where the air gap of the motor 10 is too large can be improved, thereby further improving the performance of the motor 10.

[0147] In some embodiments of this application, please refer to Figure 12 The iron core 11211 includes a tooth portion 11213 and a boot portion 11214, and the tooth portion 11213 and the boot portion 11214 are integrally connected.

[0148] The tooth portion 11213 is the main part of the core 11211, and the winding is wound on the tooth portion 11213. The shoe portion 11214 is connected to the tooth portion 11213. The shoe portion 11214 not only serves to confine the winding on the tooth portion 11213, but also serves to reduce the magnetic resistance of the core 11211 and improve the magnetic field distribution.

[0149] The tooth portion 11213 and the boot portion 11214 are integrally connected, which means that after the tooth portion 11213 and the boot portion 11214 are connected into a whole, the tooth portion 11213 and the boot portion 11214 cannot be separated without destroying the connection between the tooth portion 11213 and the boot portion 11214.

[0150] In some embodiments, the iron core 11211 is integrally formed using a soft magnetic composite material through a die-casting process.

[0151] Of course, in other embodiments, the iron core 11211 can also be made of other magnetic conductive materials, and the tooth portion 11213 and the boot portion 11214 can also be connected into a whole in other ways. For example, the tooth portion 11213 and the boot portion 11214 are separately formed and then welded to each other into a whole.

[0152] By adopting the above technical solution, the structural stability of the iron core 11211 is effectively improved, thereby further improving the performance of the motor 10.

[0153] In some embodiments of the present application, the insulating sleeve 11212 is welded to the support member 1114 .

[0154] In some embodiments, the material of the insulating sleeve 11212 is the same as that of the supporting member 1114 and both are plastic, so as to improve the welding strength between the insulating sleeve 11212 and the supporting member 1114 .

[0155] In some embodiments, the iron core 11211 of the first stator block 1121a is bonded to the first positioning groove 11141, the iron core 11211 of the second stator block 1121b is bonded to the second positioning groove 11142, the insulating sleeve 11212 of the first stator block 1121a and the insulating sleeve 11212 of the second stator block 1121b are both welded to the support member 1114, the insulating sleeve 11212 of the first stator block 1121a is also welded to the first cover plate 1112, and the insulating sleeve 11212 of the second stator block 1121b is also welded to the second cover plate 1113.

[0156] By adopting the above technical solution, it is convenient 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.

[0157] In some embodiments of this application, please refer to Figure 7 and Figure 8 The inner wall of the shell 1111 is provided with a positioning portion 11112, and the positioning portion 11112 is embedded in the support member 1114.

[0158] The positioning portion 11112 is a portion for limiting the relative position of the housing 1111 and the support member 1114 along the circumferential direction of the stator 11 .

[0159] In some embodiments, the positioning portion 11112 is a protruding structure, that is, the positioning portion 11112 is protruding relative to the inner circumferential wall of the shell 1111, and accordingly, a recess is provided on the support member 1114. For example, a recess is provided on the outer circumferential wall of the above-mentioned connecting portion 11143, and the positioning portion 11112 is embedded in the recess of the support member 1114.

[0160] In other embodiments, the positioning portion 11112 is a recessed structure, that is, the positioning portion 11112 is recessed on the inner circumferential wall of the shell 1111, and accordingly, a convex portion is provided on the support member 1114. For example, a convex portion is provided on the outer circumferential wall of the above-mentioned connecting portion 11143, and the convex portion is embedded in the positioning portion 11112.

[0161] In some other embodiments, there are multiple positioning portions 11112, some of the positioning portions 11112 have a convex structure, and other positioning portions 11112 have a concave structure. Accordingly, the support member 1114 is provided with a convex portion and a concave portion. For example, the outer peripheral wall of the above-mentioned connecting portion 11143 is provided with a convex portion and a concave portion, and the positioning portion 11112 with a convex structure is embedded in the concave portion of the support member 1114, and the convex portion of the support member 1114 is embedded in the positioning portion 11112 with a concave structure.

[0162] By adopting the above technical solution, the relative position of the support member 1114 and the housing 1111 is effectively limited, and 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.

[0163] In some embodiments of this application, please refer to Figure 7 and Figure 8 There are multiple positioning portions 11112 , and the multiple positioning portions 11112 are evenly distributed along the circumference of the shell 1111 .

[0164] The multiple positioning portions 11112 are evenly distributed along the circumference of the shell 1111, which means that along the circumference of the shell 1111, the distances between any two adjacent positioning portions 11112 are equal.

[0165] By adopting the above technical solution, the force on the support member 1114 along the circumference of the shell 1111 can be made more uniform, further improving the connection strength between the support member 1114 and the shell 1111, thereby further improving the installation stability of the stator body 112 and further improving the performance of the motor 10.

[0166] In some embodiments of the present application, the housing 1111 is a metal member, and the support member 1114 is an insulating member.

[0167] It is understandable that the housing 1111 is made of metal material, which may be but not limited to aluminum alloy, stainless steel, aluminum, copper, iron, etc. The support member 1114 is made of insulating material, which may be but not limited to plastic, rubber, ceramic, etc.

[0168] In some embodiments, the stator body 112 is fixedly mounted on the support 1114 and is separated from the housing 1111 .

[0169] By adopting the above technical solution, not only the structural strength of the stator shell 111 is effectively improved, but also the stator body 112 and the housing 1111 are easily insulated and separated.

[0170] In some embodiments of the present application, the support member 1114 is an injection molded part.

[0171] In some embodiments, an injection hole is provided on the shell 1111, and the forming mold can be set in the cavity 11111 of the shell 1111, and then the slurry is injected into the injection hole. The slurry enters the forming cavity of the forming mold through the injection hole. After the slurry solidifies, the mold is demolded to form a support member 1114 in the shell 1111 and the support member 1114 is fixedly connected to the shell 1111.

[0172] As an example, when the positioning portion 11112 is a protruding structure, during the molding process of the support member 1114 , the slurry can cover the positioning portion 11112 . After the slurry solidifies to form the support member 1114 , the positioning portion 11112 is embedded in the support member 1114 .

[0173] As an example, when the positioning portion 11112 is a concave structure, during the molding process of the support member 1114 , the slurry can enter the positioning portion 11112 . After the slurry solidifies to form the support member 1114 , part of the support member 1114 is embedded in the positioning portion 11112 .

[0174] By adopting the above technical solution, it is convenient to form the support member 1114 in the housing 1111 , which effectively simplifies the production process of the stator 11 and improves the production efficiency of the stator 11 .

[0175] Second, see Figure 4 , an embodiment of the present application provides a motor 10, comprising a stator 11 according to any one of the above embodiments.

[0176] The motor 10 provided in the embodiment of the present application effectively improves the performance of the motor 10 by adopting the stator 11 of any of the above embodiments.

[0177] In some embodiments of this application, please refer to Figure 4 The motor 10 further includes a first rotor 12 and a second rotor 13 . The first rotor 12 and the second rotor 13 are disposed on opposite sides of the stator 11 along the axial direction.

[0178] The first rotor 12 and the second rotor 13 are both rotating parts of the motor 10 .

[0179] In some embodiments, please refer to Figure 4 、 Figure 6 and Figure 11The 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 provided in the middle of the stator 11, and the rotating shaft is passed through the through-hole. As an example, a first axial hole is provided in the middle of the support member 1114, a second axial hole is provided in the middle of the first cover plate 1112, and a third axial hole is provided in the middle of the second cover plate 1113. The stator 11 further includes a cylinder 1115, which passes through the first axial hole and is connected to the hole wall of the first axial hole. One end of the cylinder 1115 is connected to the second axial hole, and the other end of the cylinder 1115 is connected to the third axial hole. The internal space of the cylinder 1115 constitutes the above-mentioned through-hole, that is, the rotating shaft passes through the cylinder 1115.

[0180] By adopting the above technical solution, the above motor 10 can be configured as a dual-rotor motor 10 , thereby effectively improving the performance of the dual-rotor motor 10 .

[0181] Thirdly, please refer to Figure 3 , an embodiment of the present application provides an electric drive device 1, comprising the motor 10 described in any of the above embodiments.

[0182] The electric drive device 1 provided in the embodiment of the present application effectively improves the performance of the electric drive device 1 because it adopts the motor 10 described in any of the above embodiments.

[0183] For the fourth aspect, please refer to Figure 1 An embodiment of the present application provides an electric drive system, including a battery 2 and the above-mentioned electric drive device 1, where the battery 2 is electrically connected to the motor 10.

[0184] The electric drive system provided in the embodiment of the present application effectively improves the performance of the electric drive system due to the adoption of the above-mentioned electric drive device 1 .

[0185] Fifth, please also refer to Figure 1 and Figure 3 , an embodiment of the present application provides an electric device, including the above-mentioned electric drive device 1 or the above-mentioned electric drive system.

[0186] The electric device provided in the embodiment of the present application effectively improves the performance of the electric device due to the adoption of the above-mentioned electric drive device 1 or the above-mentioned electric drive system.

[0187] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A stator, characterized in that: The stator comprises: The stator case comprises a shell, a first cover plate, a second cover plate, and a support member. The shell has a cavity. The first cover plate and the second cover plate are respectively fixed to opposite sides of the shell along the axis of the stator to close the cavity. The support member is disposed in the cavity and fixedly connected to the shell. The stator body is accommodated in the cavity and fixedly mounted on the support member. The stator body is fixedly connected to the first cover plate on one side along the axial direction of the stator, and is fixedly connected to the second cover plate on the other side along the axial direction of the stator.

2. The stator according to claim 1, wherein: 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 around the first stator block and a second winding wound around 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.

3. The stator according to claim 2, characterized in that The support member has a first positioning groove on a side facing the first stator block, and the first stator block is inserted into the first positioning groove. The support member has a second positioning groove on a side facing the second stator block, and the second stator block is inserted into the second positioning groove.

4. The stator according to claim 3, characterized in that The first stator block is bonded into the first positioning groove; and / or, The second stator block is bonded into the second positioning groove.

5. The stator according to claim 3, characterized in that The number of the first stator blocks and the number of the first positioning slots are both plural, and the plural first stator blocks are arranged in a one-to-one correspondence with the plural first positioning slots; and / or, The number of the second stator blocks and the number of the second positioning slots are both plural, and the plurality of second stator blocks and the plurality of second positioning slots are arranged in a one-to-one correspondence.

6. The stator according to claim 3, wherein: The first positioning groove and the second positioning groove are communicated with each other along the axial direction of the stator, and one end of the first stator block facing away from the first cover plate abuts against one end of the second stator block facing away from the second cover plate.

7. The stator according to claim 2, wherein: The stator block includes an iron core and an insulating sleeve sleeved on the iron core. The insulating sleeve of the first stator block is fixedly connected to the first cover plate, and the insulating sleeve of the second stator block is fixedly connected to the second cover plate.

8. The stator according to claim 7, characterized in that 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.

9. The stator according to claim 8, characterized in that 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.

10. The stator according to claim 9, characterized in that The protrusion height of the connecting boss from the insulating body along the axial direction of the stator is 0.1 mm-1 mm.

11. The stator according to claim 7, wherein: The iron core includes a tooth portion and a shoe portion, and the tooth portion and the shoe portion are integrally connected.

12. The stator according to claim 7, wherein: The insulating sleeve is welded to the supporting member.

13. The stator according to any one of claims 1 to 12, characterized in that The inner peripheral wall of the shell is provided with a positioning portion, and the positioning portion is embedded with the support member.

14. The stator according to claim 13, wherein: There are multiple positioning portions, and the multiple positioning portions are evenly distributed along the circumference of the shell.

15. The stator according to any one of claims 1 to 12, characterized in that The shell is a metal part, and the support part is an insulating part.

16. The stator according to any one of claims 1 to 12, characterized in that The support member is an injection molded member.

17. A motor, characterized in that: The electric machine comprises the stator according to any one of claims 1-16.

18. The motor according to claim 17, wherein The motor further includes a first rotor and a second rotor, wherein 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 in that: The electric drive device comprises the electric motor according to claim 17 or 18.

20. An electric drive system, characterized in that: The electric drive system includes a battery and the electric drive device according to claim 19, wherein the battery is electrically connected to the motor.

21. An electric device, characterized in that: The electric device includes the electric drive apparatus according to claim 19 or the electric drive system according to claim 20.

Images