Stator, axial flux motor, electric driving apparatus, electric driving system, and electric device

Abstract

Provided are a stator (111), an axial flux motor (11), an electric driving apparatus (10), an electric driving system (100), and an electric device. The stator (111) comprises a stator housing (1111), a stator main body (1112), and a lead-out wire (1113); a wire outlet is formed on an axial side of the stator housing (1111); the stator main body (1112) is accommodated in the stator housing (1111); one end of the lead-out wire (1113) is connected to the stator main body (1112), and the other end of the lead-out wire (1113) passes through the wire outlet.

Description

Stator, axial flux motor, electric drive device, electric drive system and electric equipment

[0001] Cross-references

[0002] This application refers to Chinese patent application No. 202310897561.5 filed on July 20, 2023, entitled "Stator, axial flux motor, electric drive device, electric drive system and electric equipment", which is incorporated into this application in its entirety by reference. Technical Field

[0003] The present application belongs to the field of motor technology, and more specifically, relates to a stator, an axial flux motor, an electric drive device, an electric drive system and an electric device. Background Art

[0004] Axial flux motors, in which the magnetic flux direction is axial, are increasingly popular due to their smaller axial dimensions. However, their radial dimensions are larger, and reducing them remains a pressing technical challenge.

[0005] Summary of the Invention

[0006] One of the purposes of the embodiments of the present application is to provide a stator, an axial flux motor, an electric drive device, an electric drive system and an electric device to solve the technical problem of the large radial size of the axial flux motor in the related art.

[0007] To achieve the above objectives, the technical solution adopted in the embodiment of the present application is to provide a stator for use in an axial flux motor, the stator comprising:

[0008] The stator housing has a wire outlet opened on its axial side;

[0009] The stator body is accommodated in the stator housing;

[0010] The lead wire has one end connected to the stator body and the other end passed through the wire outlet.

[0011] The stator provided by the embodiment of the present application has at least the following beneficial effects: the stator provided by the embodiment of the present application opens a wire outlet on the axial side of the stator shell, and passes the lead wire through the wire outlet, so that the lead wire can extend outward through the axial side of the stator shell. In this way, the axial space of the axial flux motor can be effectively utilized without providing a wiring structure on the outer peripheral side of the stator shell, thereby effectively reducing the radial size of the stator, thereby effectively reducing the radial size of the axial flux motor.

[0012] In some embodiments of the present application, the stator further includes a seal, which is disposed between the lead wire and an edge of the wire outlet.

[0013] By adopting the above technical solution, the gap between the lead wire and the edge of the outlet is effectively sealed, which not only reduces the risk of leakage of substances contained in the stator shell, but also improves the situation of external substances such as water vapor and dust entering the stator shell, thereby effectively improving the reliability of the stator.

[0014] In some embodiments of the present application, the seal includes a connecting portion and a sealing portion. There are multiple lead wires. The connecting portion is used to connect the multiple lead wires. The sealing portion is arranged between the connecting portion and the edge of the wire outlet.

[0015] By adopting the above technical solution, the seal can simultaneously seal the gaps between multiple lead wires and the edge of the outlet, without the need to provide a separate seal on each lead wire, effectively simplifying the sealing structure between the lead wires and the edge of the outlet, thereby effectively reducing the production cost of the stator and effectively improving the assembly efficiency of the stator.

[0016] In some embodiments of the present application, the connecting portion is injection-molded and connected to the plurality of lead wires.

[0017] By adopting the above technical solution, it is not only convenient to connect multiple lead wires together, but also the gap between the connecting portion and the lead wires is effectively blocked, thereby further improving the reliability of the stator.

[0018] In some embodiments of the present application, a slot is provided on the outer peripheral side of the sealing member, and the edge of the wire outlet is clamped in the slot.

[0019] By adopting the above technical solution, the risk of the seal being separated from the stator housing is effectively reduced, thereby further improving the reliability of the stator.

[0020] In some embodiments of the present application, the stator further includes a cooling medium, which is accommodated in the stator housing.

[0021] By adopting the above technical solution, the stator body can be in direct contact with the cooling medium. In other words, the heat generated by the stator body during operation can be directly transferred to the cooling medium, thereby effectively improving the cooling efficiency of the stator and effectively improving the reliability of the stator.

[0022] In some embodiments of the present application, the lead wire includes a flexible part and a rigid part, one end of the rigid part is connected to the stator body, the other end of the rigid part is connected to one end of the flexible part, and the other end of the flexible part is passed through the wire outlet.

[0023] By adopting the above technical solution, after the rigid part is connected to the stator body, the flexible part can be bent so that the end of the flexible part away from the rigid part is aligned with the outlet, thereby effectively improving the positioning accuracy of the lead wire, facilitating the insertion of the flexible part into the outlet, and effectively improving the work efficiency of the lead wire assembly operation.

[0024] In some embodiments of the present application, the flexible portion includes a plurality of sheets, and the plurality of sheets are stacked and connected.

[0025] By adopting the above technical solution, the flexible portion can be made softer so as to facilitate bending operations on the flexible portion.

[0026] In some embodiments of the present application, the plurality of sheets are welded together at one end close to the rigid portion and welded to the rigid portion.

[0027] By adopting the above technical solution, the connection strength between the flexible part and the rigid part is effectively improved, thereby effectively improving the reliability of the stator.

[0028] In some embodiments of the present application, the ends of the multiple sheets away from the rigid portion are welded into one body and passed through the wire outlet.

[0029] By adopting the above technical solution, the connection strength between the flexible portion and the external connecting member is effectively improved, thereby effectively improving the reliability of the stator.

[0030] In some embodiments of the present application, the flexible portion includes a connecting section, a bending section and a lead-out section, the bending section is connected between one end of the connecting section and one end of the lead-out section, the other end of the connecting section is connected to the rigid portion, and the other end of the lead-out section is passed through the wire outlet.

[0031] By adopting the above technical solution, it is convenient to align the lead-out section with the wire outlet and extend it outward through the wire outlet, thereby effectively improving the work efficiency of the lead-out wire assembly operation.

[0032] In some embodiments of the present application, the bending section has an arc-shaped structure.

[0033] By adopting the above technical solution, the bending stress of the flexible portion is effectively reduced, thereby effectively reducing the risk of breakage of the lead wire.

[0034] An embodiment of the present application further provides an axial flux motor, comprising the stator described in any one of the above embodiments.

[0035] The axial flux motor provided by the embodiment of the present application has at least the following beneficial effects: since the axial flux motor provided by the embodiment of the present application adopts the stator described in any of the above embodiments, the axial size of the axial flux motor is effectively reduced.

[0036] In some embodiments of the present application, the number of stators is two, and the axial flux motor further includes a rotor, which is disposed between the two stators.

[0037] By adopting the above technical solution, the volume of the dual-stator axial flux motor is effectively reduced.

[0038] In some embodiments of the present application, a wire outlet is provided on a side of the stator housing facing the rotor.

[0039] By adopting the above technical solution, the space between the two stators can be effectively utilized without increasing the axial size of the axial flux motor, and there is no need to set a wiring structure on the outer peripheral side of the stator shell of the two stators, thereby effectively reducing the radial size of the axial flux motor.

[0040] In some embodiments of the present application, the stator body includes an iron core and a winding wound around the iron core, and the two windings are connected in series or in parallel through lead wires.

[0041] By adopting the above technical solution, the connection method of the two stator windings can be selected according to actual application needs, so as to reasonably adjust the number of turns of each phase line of the winding, thereby realizing flexible adjustment of the power of the axial flux motor.

[0042] In some embodiments of the present application, the axial flux motor further includes two rotors, and the stator is disposed between the two rotors.

[0043] By adopting the above technical solution, the volume of the dual-rotor axial flux motor is effectively reduced.

[0044] In some embodiments of the present application, the stator body includes a first iron core, a second iron core, a first winding wound on the first iron core, and a second winding wound on the second iron core. The lead wires are divided into first lead wires connected to the first winding and second lead wires connected to the second winding. Outlets are opened on both axial sides of the stator shell. The first lead wire is passed through the outlet located on one axial side of the stator shell, and the second lead wire is passed through the outlet located on the other axial side of the stator shell.

[0045] By adopting the above technical solution, without increasing the axial size of the axial flux motor, the two axial side spaces of the stator can be effectively utilized, and there is no need to set a wiring structure on the outer peripheral side of the stator shell of the two stators, thereby effectively reducing the radial size of the axial flux motor.

[0046] In some embodiments of the present application, the stator body includes a first iron core, a second iron core, a first winding wound around the first iron core, and a second winding wound around the second iron core, and the first winding and the second winding are connected in series or in parallel through lead wires.

[0047] By adopting the above technical solution, the connection method of the first winding and the second winding can be selected according to actual application needs, so as to reasonably adjust the number of turns of each phase line of the first winding and the number of turns of each phase line of the second winding, thereby realizing flexible adjustment of the power of the axial flux motor.

[0048] An embodiment of the present application further provides an electric drive device, comprising the axial flux motor described in any one of the above embodiments.

[0049] The electric drive device provided by the embodiment of the present application has at least the following beneficial effects: since the electric drive device provided by the embodiment of the present application adopts the axial flux motor described in any of the above embodiments, the volume of the electric drive device is effectively reduced.

[0050] An embodiment of the present application also provides an electric drive system, comprising the above-mentioned electric drive device.

[0051] The electric drive system provided by the embodiment of the present application has at least the following beneficial effects: since the electric drive system provided by the embodiment of the present application adopts the above-mentioned electric drive device, the volume of the electric drive system is effectively reduced.

[0052] An embodiment of the present application also provides an electric device, including the above-mentioned electric drive system.

[0053] The electric device provided by the embodiment of the present application has at least the following beneficial effects: since the electric device provided by the embodiment of the present application adopts the above-mentioned electric drive system, the volume of the electric device is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] 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.

[0055] FIG1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0056] FIG2 is a schematic diagram of an exploded structure of a battery provided in an embodiment of the present application;

[0057] FIG3 is a schematic structural diagram of an electric drive device provided in an embodiment of the present application;

[0058] FIG4 is a schematic structural diagram of an axial flux motor provided in one embodiment of the present application;

[0059] FIG5 is a schematic diagram 1 of the connection structure of two stator bodies in the axial flux motor shown in FIG4 ;

[0060] FIG6 is a second schematic diagram of the connection structure of the two stator bodies in the axial flux motor shown in FIG4 ;

[0061] FIG7 is a schematic structural diagram of an axial flux motor provided by another embodiment of the present application;

[0062] FIG8 is a schematic diagram of the structure of the lead wire provided in an embodiment of the present application;

[0063] FIG9 is a schematic structural diagram of a sealing member provided in an embodiment of the present application.

[0064] 10. Reference numerals in the drawings: 1000, vehicle; 100, electric drive system; 10, electric drive device; 11, axial flux motor; 111, stator; 1111, stator housing; 1112, stator body; 1113, lead wire; 1113a, first lead wire; 1113b, second lead wire; 11131, flexible portion; 11132, rigid portion; 11133, connecting section; 11134, bending section; 11135, lead section; 1114, sealing member; 1114a, first sealing member; 1114b, second sealing member; 11141, connecting portion; 11142, sealing portion; 11143, slot; 1115, power input terminal; 1116, power output terminal; 112, rotor; 12, controller; 13, speed change mechanism; 20, battery; 21. Box body; 211. First part; 212. Second part; 22. Battery cell. DETAILED DESCRIPTION

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" 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.

[0069] An electric motor is a power unit for electric devices, converting electrical energy into mechanical energy to drive them. An axial flux motor is one in which the magnetic flux is axial and the current-carrying conductors are radially arranged. An axial flux motor typically consists of a rotor and a stator. These two components are roughly disc-shaped and arranged along the motor's axial direction. During operation, the rotor rotates while the stator remains stationary. The stator typically consists of a stator housing and a stator body. The stator body is housed within the stator housing to separate the stator body from the rotor and other components of the axial flux motor.

[0070] In the related art, the stator lead wires are connected to the stator body and extend from the outer circumference of the stator body toward the outer circumference of the stator case. The lead wires then pass through the outer circumference of the stator case and extend outward to connect to external connectors. However, because the lead wires protrude from the outer circumference of the stator case, the inner diameter of the axial flux motor's housing must be increased to accommodate the lead wires, which in turn increases the radial size of the axial flux motor.

[0071] In order to reduce the radial size of the axial flux motor, the stator provided in the embodiment of the present application has an outlet opening on the axial side of the stator shell, and the lead wire is passed through the outlet opening, so that the lead wire can extend outward through the axial side of the stator shell. In this way, the axial space of the axial flux motor can be effectively utilized without the need to set a wiring structure on the outer peripheral side of the stator shell, thereby effectively reducing the radial size of the stator, thereby effectively reducing the radial size of the axial flux motor.

[0072] The axial flux motor provided in the embodiments of the present application can be applied to electric equipment, which may be, but is not limited to, vehicles, ships, airplanes, spacecraft, excavators, cranes, lifts, elevators, etc., and is not specifically limited here.

[0073] 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.

[0074] Please refer to Figure 1, which is a schematic diagram of the structure of a vehicle 1000 provided in an embodiment of the present application. Based on the power source, vehicle 1000 can be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle. Based on the drive mode, vehicle 1000 can be a front-wheel drive vehicle, a rear-wheel drive vehicle, or a four-wheel drive vehicle. Vehicle 1000 includes a vehicle body and an electric drive system 100.

[0075] The vehicle body is the primary supporting component of vehicle 1000 and comprises an engine compartment and a driver's compartment. The engine compartment houses the vehicle's powertrain, electronic control system, transmission mechanism, and other components, while the driver's compartment provides operating and seating space for the driver and passengers. If vehicle 1000 is a front-wheel drive vehicle, the engine compartment is located at the front of the vehicle body, i.e., the front engine compartment. If vehicle 1000 is a rear-wheel drive vehicle, the engine compartment is located at the rear of the vehicle body, i.e., the rear engine compartment. If vehicle 1000 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 vehicle body and the rear engine compartment located at the rear. The driver's compartment is located between the front and rear ends of the vehicle body.

[0076] The electric drive system 100 is the power system of the vehicle 1000. The electric drive system 100 is used to convert electrical energy into mechanical energy and output this mechanical energy to the wheels of the vehicle 1000 to drive the vehicle 1000. The electric drive system 100 is installed on the vehicle body. Specifically, a portion of the electric drive system 100 can be installed in the engine compartment, and another portion of the electric drive system 100 can be installed on the bottom of the vehicle body.

[0077] Referring to FIG. 1 , an electric drive system 100 provided in an embodiment of the present application includes an electric drive device 10 and a battery 20 .

[0078] The electric drive device 10 is used to convert the electrical energy provided by the battery 20 into mechanical energy and output the mechanical energy to the wheels of the vehicle 1000 to drive the vehicle 1000. The electric drive device 10 is installed in the engine compartment. Specifically, when the vehicle 1000 is a front-wheel drive vehicle, the electric drive device 10 is installed in the front engine compartment and is used to output the mechanical energy to the front wheels of the vehicle 1000 to drive the vehicle 1000. When the vehicle 1000 is a rear-wheel drive vehicle, the electric drive device 10 is installed in the rear engine compartment and is used to output the mechanical energy to the rear wheels of the vehicle 1000 to drive the vehicle 1000. When the vehicle 1000 is a four-wheel drive vehicle, there are two electric drive devices 10: one electric drive device 10 is installed in the front engine compartment and is used to output the mechanical energy to the front wheels of the vehicle 1000, and the other electric drive device 10 is installed in the rear engine compartment and is used to output the mechanical energy to the rear wheels of the vehicle 1000 to drive the vehicle 1000.

[0079] Referring to FIG3 , the electric drive device 10 includes an axial flux motor 11, which is the main power output component of the electric drive device 10 and is used to convert the electrical energy provided by the battery 20 into mechanical energy. Additionally, the axial flux motor 11 can also function as a generator, for example, capable of converting mechanical energy into electrical energy during kinetic energy recovery. The number of axial flux motors 11 can be one or more. In some embodiments, the number of axial flux motors 11 is two, and the two axial flux motors 11 are coaxially arranged, i.e., the central axes of the two axial flux motors 11 coincide with each other. The electric drive device 10 may further include a speed change mechanism 13, which is the power transmission mechanism of the electric drive device 10. The speed change mechanism 13 has a power input and a power output. The power input of the speed change mechanism 13 is connected to the rotating shaft of the axial flux motor 11, and the power output of the speed change mechanism 13 is connected to the wheels of the vehicle 1000. The speed change mechanism 13 can change the speed and torque output by the speed change mechanism 13 relative to the axial flux motor 11 to transmit the mechanical energy to the wheels of the vehicle 1000. For example, the speed change mechanism 13 can transmit the mechanical energy to the wheels of the vehicle 1000 by reducing the speed and increasing the torque relative to the axial flux motor 11. For another example, the speed change mechanism 13 can transmit the mechanical energy to the wheels of the vehicle 1000 by increasing the speed and reducing the torque relative to the axial flux motor 11. Optionally, the speed change mechanism 13 can 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 transmission mechanism, etc., and is not specifically limited here. The electric drive device 10 may also include a controller 12, which is used to convert the direct current output by the battery 20 into alternating current and transmit the alternating current to the axial flux motor 11, and is also used to control the operation of the axial flux motor 11, for example, controlling the start and stop, speed, torque, etc. of the axial flux motor 11.

[0080] The axial flux motor 11 includes a stator 111 and a rotor 112. The rotor 112 is the rotating part of the axial flux motor 11, and the stator 111 is the fixed part of the axial flux motor 11. The axial flux motor 11 may also include a housing, which is used to provide an installation environment for the stator 111 and the rotor 112 and also serves as a supporting component for the axial flux motor 11. Optionally, the housing can be an integrally molded component or an assembled component composed of multiple parts. The material of the housing can be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and is not specifically limited here.

[0081] The battery 20 is used to provide electrical energy to the electric drive device 10, and the battery 20 can be arranged at the bottom, head or tail of the vehicle 1000. Please refer to Figure 2, which is an exploded schematic diagram of the battery 20 provided in an embodiment of the present application. The battery 20 includes a case 21 and a battery cell 22, and the battery cell 22 is accommodated in the case 21. Among them, the case 21 is used to provide a storage space for the battery cell 22, and the case 21 can adopt a variety of structures. In some embodiments, the case 21 may include a first part 211 and a second part 212, and the first part 211 and the second part 212 cover each other, and the first part 211 and the second part 212 jointly define a storage space for accommodating 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 jointly 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. Of course, the box body 21 formed by the first portion 211 and the second portion 212 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0082] In some embodiments, the box 21 may serve as part of the chassis structure of the vehicle 1000. For example, a portion of the box 21 may form at least a portion of the floor of the vehicle 1000, or a portion of the box 21 may form at least a portion of the cross member and longitudinal member of the vehicle 1000.

[0083] Of course, in some embodiments, the battery 20 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 the vehicle 1000 .

[0084] In the battery 20, there may be multiple battery cells 22, and the multiple battery cells 22 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 22. The multiple battery cells 22 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 22 may be housed within the housing 21. Of course, the battery 20 may also comprise a battery module composed of multiple battery cells 22 connected in series, in parallel, or in a hybrid connection, and then the multiple battery modules may be connected in series, in parallel, or in a hybrid connection to form an entire battery cell, which is then housed within the housing 21. The battery 20 may also include other functional components, such as a busbar for electrically connecting the multiple battery cells 22.

[0085] Each battery cell 22 may be a secondary battery or a primary battery. A secondary battery 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 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, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, 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 battery cells, are not particularly limited in this application.

[0086] The stator 111 provided in the embodiment of the present application is described below with reference to the accompanying drawings.

[0087] First, referring to Figures 4 and 7 , embodiments of the present application provide a stator 111 for use in an axial flux motor 11. Stator 111 includes a stator housing 1111, a stator body 1112, and lead wires 1113. An outlet is defined on the axial side of stator housing 1111. Stator body 1112 is housed within stator housing 1111. One end of lead wire 1113 is connected to stator body 1112, and the other end of lead wire 1113 is passed through the outlet.

[0088] The stator housing 1111 is used to provide an internal environment for the stator 111. Optionally, the stator housing 1111 can be an integrally formed component or an assembled component assembled from multiple parts. The material of the stator housing 1111 can be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and is not specifically limited here. In some embodiments, when the stator housing 1111 includes multiple parts, some parts of the stator housing 1111 can be made of metal materials such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and other parts of the stator housing 1111 can be made of plastic, and are not specifically limited here.

[0089] The axial side of the stator housing 1111 refers to the side of the stator housing 1111 through which the central axis of the stator 111 passes. A wire outlet is provided on the axial side of the stator housing 1111. It is understood that the wire outlet extends through the axial side of the stator housing 1111, allowing the internal environment of the stator 111 to communicate with the external environment through the wire outlet. The shape of the wire outlet can be, but is not limited to, circular, square, elliptical, triangular, etc., and is not specifically limited here.

[0090] The stator body 1112 is the main part of the stator 111. The stator body 1112 is magnetically coupled to the rotor 112 to drive the rotor 112 to rotate. The stator body 1112 may include an iron core and a winding. The winding is wound around the iron core. The iron core and the winding together constitute the magnetic circuit of the axial flux motor 11. When the winding is energized, the winding generates an electromagnetic field, which is magnetically coupled to the rotor 112 to drive the rotor 112 to rotate. In some embodiments, the iron core can be an assembled component assembled from multiple parts, for example, the iron core is formed by stacking multiple punchings. In other embodiments, the iron core can also be an integrally molded component, for example, the iron core is integrally molded through a casting process. In some embodiments, the stator body 1112 may also include a base, and multiple iron cores are fixedly arranged on the base and arranged around the rotating shaft of the rotor 112. An axial cavity can be opened in the middle of the base, and the rotating shaft of the rotor 112 is passed through the axial cavity.

[0091] Lead wire 1113 is a component used to input or output current from the above-mentioned winding. One end of lead wire 1113 is electrically connected to the winding, and the other end of lead wire 1113 is inserted into the outlet and electrically connected to the external connector. The connection method between lead wire 1113 and the winding or external connector can be, but is not limited to, welding, fastening connection, etc., and is not specifically limited here. Lead wire 1113 can be round wire or flat wire. The material of lead wire 1113 can be, but is not limited to, copper, aluminum, aluminum alloy, iron, stainless steel, etc., and is not specifically limited here.

[0092] The stator 111 provided in the embodiment of the present application opens a wire outlet on the axial side of the stator shell 1111, and passes the lead wire 1113 through the wire outlet, so that the lead wire 1113 can extend outward through the axial side of the stator shell 1111. In this way, the axial space of the axial flux motor 11 can be effectively utilized without providing a wiring structure on the outer peripheral side of the stator shell 1111, thereby effectively reducing the radial size of the stator 111, thereby effectively reducing the radial size of the axial flux motor 11.

[0093] In some embodiments of the present application, please refer to FIG. 4 and FIG. 7 , the stator 111 further includes a sealing member 1114 , which is disposed between the lead wire 1113 and the edge of the wire outlet.

[0094] The seal 1114 is a component used to seal the gap between the lead wire 1113 and the edge of the outlet. In some embodiments, the seal 1114 can be an integrally molded component, for example, the seal 1114 is made of a flexible material through an integral molding process. In other embodiments, the seal 1114 can be an assembled component assembled from multiple parts, for example, a portion of the seal 1114 is made of a rigid material and is disposed on the lead wire 1113, and another portion of the seal 1114 is made of a flexible material and is pressed between the edge of the outlet and the outer peripheral side of the rigid material of the seal 1114. It should be noted that the above-mentioned flexible material can be, but is not limited to, rubber, silicone, etc., and is not specifically limited here. The above-mentioned rigid material can be, but is not limited to, metal, hard plastic, etc., and is not specifically limited here. It is understandable that the outer contour of the seal 1114 is adapted to the shape of the outlet. For example, if the outlet is circular, the outer contour of the seal 1114 is also circular.

[0095] By adopting the above technical solution, the gap between the lead wire 1113 and the edge of the outlet is effectively blocked, which not only reduces the risk of leakage of substances contained in the stator shell 1111, but also improves the situation of external substances such as water vapor and dust entering the stator shell 1111, thereby effectively improving the reliability of the stator 111.

[0096] In some embodiments of the present application, referring to FIG9 , the seal 1114 includes a connecting portion 11141 and a sealing portion 11142 , the number of lead wires 1113 is multiple, the connecting portion 11141 is used to connect multiple lead wires 1113 , and the sealing portion 11142 is arranged between the connecting portion 11141 and the edge of the wire outlet.

[0097] The sealing portion 11142 is the main part of the sealing member 1114 . It can be understood that the sealing portion 11142 is made of a flexible material and is used to seal the gap between the outer peripheral side of the connecting portion 11141 and the edge of the wire outlet.

[0098] Connecting portion 11141 is the portion of sealing member 1114 used to connect multiple lead wires 1113. In some embodiments, connecting portion 11141 can be made of a rigid material. For example, connecting portion 11141 is formed on multiple lead wires 1113 through an injection molding process using a hard plastic to connect the multiple lead wires 1113 together. Of course, in other embodiments, connecting portion 11141 can also be made of a flexible material.

[0099] By adopting the above technical solution, the seal 1114 can simultaneously seal the gaps between multiple lead wires 1113 and the edge of the outlet, without having to separately set a seal 1114 on each lead wire 1113, effectively simplifying the sealing structure between the lead wire 1113 and the edge of the outlet, thereby effectively reducing the production cost of the stator 111 and effectively improving the assembly efficiency of the stator 111.

[0100] In some embodiments of the present application, the connection portion 11141 is injection-molded and connected to the plurality of lead wires 1113 .

[0101] In other words, in this embodiment, the connecting portion 11141 is made of plastic. Specifically, during the manufacturing process, a plurality of lead wires 1113 are placed in the molding cavity of the mold, and raw materials are injected into the molding cavity until the raw materials fill the molding cavity. After the raw materials are solidified, the above-mentioned connecting portion 11141 is formed and the plurality of lead wires 1113 are connected together.

[0102] By adopting the above technical solution, it is not only convenient to connect multiple lead wires 1113 together, but also the gap between the connecting portion 11141 and the lead wire 1113 is effectively blocked, thereby further improving the reliability of the stator 111.

[0103] In some embodiments of the present application, referring to FIG. 9 , a slot 11143 is defined on the outer circumference of the sealing member 1114 , and the edge of the wire outlet is locked in the slot 11143 .

[0104] Slot 11143 is recessed into the outer circumference of seal 1114. Slot 11143 extends along the circumference of seal 1114 to form a closed loop. The edge of the cable outlet snaps into slot 11143, securing seal 1114 relative to stator housing 1111. In some embodiments, where seal 1114 includes a connecting portion 11141 and a sealing portion 11142, slot 11143 is recessed into the outer circumference of sealing portion 11142.

[0105] By adopting the above technical solution, the risk of the sealing member 1114 being separated from the stator housing 1111 is effectively reduced, thereby further improving the reliability of the stator 111.

[0106] Of course, there are many ways to fix the sealing member 1114 to the stator housing 1111 . For example, glue may be applied between the sealing member 1114 and the edge of the wire outlet to bond and fix the sealing member 1114 to the stator housing 1111 .

[0107] In some embodiments of the present application, the stator 111 further includes a cooling medium (not shown), which is accommodated in the stator housing 1111 .

[0108] The cooling medium is used to absorb heat generated by the stator body 1112. In some embodiments, the cooling medium can be statically housed within the stator housing 1111. In other embodiments, the stator housing 1111 is provided with a liquid inlet and a liquid outlet. The cooling medium can enter the stator housing 1111 through the liquid inlet and exit the stator housing 1111 through the liquid outlet, thereby circulating the cooling medium to cool the stator body 1112. Alternatively, the cooling medium can be, but is not limited to, cooling oil, cooling water, or the like, and is not specifically limited herein.

[0109] By adopting the above technical solution, the stator body 1112 can be in direct contact with the cooling medium. In other words, the heat generated by the stator body 1112 during operation can be directly transferred to the cooling medium, thereby effectively improving the cooling efficiency of the stator 111 and effectively improving the reliability of the stator 111.

[0110] In some embodiments of the present application, please refer to Figure 8, the lead wire 1113 includes a flexible portion 11131 and a rigid portion 11132, one end of the rigid portion 11132 is connected to the stator body 1112, the other end of the rigid portion 11132 is connected to one end of the flexible portion 11131, and the other end of the flexible portion 11131 is passed through the outlet.

[0111] It is understood that the rigidity of the flexible portion 11131 is less than that of the rigid portion 11132. The connection of one end of the rigid portion 11132 to the stator body 1112 means that the rigid portion 11132 is electrically connected to the windings of the stator body 1112. The connection between the rigid portion 11132 and the flexible portion 11131 may be, but is not limited to, welding, fastening, etc., and is not specifically limited herein.

[0112] By adopting the above technical solution, after the rigid part 11132 is connected to the stator body 1112, the flexible part 11131 can be bent so that the end of the flexible part 11131 away from the rigid part 11132 is aligned with the outlet, thereby effectively improving the positioning accuracy of the lead wire 1113, facilitating the insertion of the flexible part 11131 into the outlet, and effectively improving the work efficiency of the assembly operation of the lead wire 1113.

[0113] In some embodiments of the present application, the flexible portion 11131 includes a plurality of sheets (not shown), and the plurality of sheets are stacked and connected.

[0114] The plurality of sheets are stacked and connected together along the thickness direction of the sheet. The connection between two adjacent sheets can be in various ways, for example, by gluing the two adjacent sheets together or by welding the edges of the two adjacent sheets together, which is not specifically limited here.

[0115] By adopting the above technical solution, the flexible portion 11131 can be made soft so that the flexible portion 11131 can be bent.

[0116] In some embodiments of the present application, multiple sheets are welded together at one end close to the rigid portion 11132 and are welded to the rigid portion 11132 .

[0117] In this embodiment, after the multiple sheets are stacked, the ends of the multiple sheets close to the rigid part 11132 are heated to melt the ends of the multiple sheets close to the rigid part 11132. After the melted part of the flexible part 11131 is re-solidified, the ends of the multiple sheets close to the rigid part 11132 are fused into a whole, and the whole is welded to the rigid part 11132 to connect the flexible part 11131 and the rigid part 11132.

[0118] By adopting the above technical solution, the connection strength between the flexible portion 11131 and the rigid portion 11132 is effectively improved, thereby effectively improving the reliability of the stator 111.

[0119] In some embodiments of the present application, the ends of the multiple sheets away from the rigid portion 11132 are welded together and passed through the wire outlet.

[0120] In this embodiment, after the multiple sheets are stacked, the ends of the multiple sheets away from the rigid part 11132 are heated to melt the ends of the multiple sheets away from the rigid part 11132. After the melted parts of the flexible part 11131 are re-solidified, the ends of the multiple sheets away from the rigid part 11132 are fused into a whole, and the whole is passed through the wire outlet and connected to the external connector.

[0121] By adopting the above technical solution, the connection strength between the flexible portion 11131 and the external connection member is effectively improved, thereby effectively improving the reliability of the stator 111.

[0122] Of course, in other embodiments, the flexible portion 11131 and the rigid portion 11132 may be made of different conductive materials so that the rigidity of the flexible portion 11131 is smaller than that of the rigid portion 11132 . For example, the flexible portion 11131 is made of aluminum, and the rigid portion 11132 is made of copper.

[0123] In some embodiments of the present application, please refer to Figure 8, the flexible portion 11131 includes a connecting section 11133, a bending section 11134 and a lead-out section 11135, the bending section 11134 is connected between one end of the connecting section 11133 and one end of the lead-out section 11135, the other end of the connecting section 11133 is connected to the rigid portion 11132, and the other end of the lead-out section 11135 is passed through the wire outlet.

[0124] The connecting section 11133 is used to connect the rigid part 11132 , the lead-out section 11135 is used to connect an external connecting piece, and the bending section 11134 is used to change the extension direction of the flexible part 11131 .

[0125] When the flexible portion 11131 includes multiple sheets, the multiple sheets are welded at one end close to the rigid portion 11132 to form the above-mentioned connecting section 11133, the multiple sheets are welded at one end away from the rigid portion 11132 to form the above-mentioned lead-out section 11135, and the middle parts of the multiple sheets are stacked to form the above-mentioned bending section 11134.

[0126] By adopting the above technical solution, it is convenient to align the lead-out section 11135 with the wire outlet and extend it outward through the wire outlet, thereby effectively improving the work efficiency of the assembly operation of the lead-out wire 1113.

[0127] In some embodiments of the present application, referring to FIG. 8 , the bending section 11134 is an arc-shaped structure.

[0128] By adopting the above technical solution, the strength of the flexible part 11131 can be reduced, which is conducive to adjusting the bending direction of the flexible part 11131 to adapt to the position of the outlet. At the same time, the bending stress of the flexible part 11131 can be effectively reduced, thereby effectively reducing the risk of breakage of the lead wire 1113.

[0129] In the second aspect, please refer to FIG. 4 and FIG. 7 together. An embodiment of the present application provides an axial flux motor 11 , comprising the stator 111 described in any of the above embodiments.

[0130] Since the axial flux motor 11 provided in the embodiment of the present application adopts the stator 111 described in any of the above embodiments, the axial size of the axial flux motor 11 is effectively reduced.

[0131] In some embodiments of the present application, referring to FIG. 4 , there are two stators 111 , and the axial flux motor 11 further includes a rotor 112 . The rotor 112 is disposed between the two stators 111 .

[0132] It can be understood that the rotor 112 is coaxially arranged with the two stators 111 , that is, the central axis of the rotor 112 coincides with the central axes of the two stators 111 .

[0133] By adopting the above technical solution, the volume of the dual-stator axial flux motor 11 is effectively reduced.

[0134] In some embodiments of the present application, referring to FIG. 4 , a wire outlet is provided on a side of the stator housing 1111 facing the rotor 112 .

[0135] In other words, the lead wires 1113 extend outward through the side of the stator case 1111 facing the rotor 112 .

[0136] In some embodiments, the outer diameter of the rotor 112 is smaller than the outer diameter of the two stators 111. Since the rotor 112 is coaxially arranged with the two stators 111, in the radial direction of the axial flux motor 11, the outer peripheral sides of the two stators 111 protrude from the outer peripheral side of the rotor 112, so that the side of one stator case 1111 facing the rotor 112, the outer peripheral side of the rotor 112, and the side of the other stator case 1111 facing the rotor 112 enclose a wiring space, and the lead wire 1113 passes through the outlet and enters the wiring space.

[0137] By adopting the above technical solution, the space between the two stators 111 can be effectively utilized without increasing the axial size of the axial flux motor 11, and there is no need to set a wiring structure on the outer peripheral side of the stator shell 1111 of the two stators 111, thereby effectively reducing the radial size of the axial flux motor 11.

[0138] In some embodiments of the present application, please refer to FIG. 5 and FIG. 6 , the windings of the two stator bodies 1112 are connected in series or in parallel via lead wires 1113 .

[0139] In some embodiments, please refer to Figure 5, the axial flux motor 11 is a three-phase motor, and the number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into three positive lead wires and three negative lead wires. One end of the three positive lead wires is connected one-to-one with the positive end of the three-phase line of the winding, and the other end of the three positive lead wires is electrically connected through a terminal to form an electrical input end 1115, and the three negative lead wires are connected one-to-one with the negative end of the three-phase line of the winding, and the other end of the three negative lead wires is electrically connected through a terminal to form an electrical output end 1116. The electrical input end 1115 of the first stator body 1112 is used as the power supply point of the axial flux motor 11, and the electrical output end 1116 of the stator body 1112 is electrically connected to the electrical input end 1115 of the second stator body 1112 through a terminal, and the electrical output end 1116 of the second stator body 1112 is used as the neutral point of the axial flux motor 11, so that the two stator bodies 1112 are connected in series.

[0140] In other embodiments, the axial flux motor 11 is a two-phase motor, and the number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into two positive lead wires and two negative lead wires. One end of the two positive lead wires is connected one-to-one with the positive ends of the two-phase lines of the winding, and the other ends of the two positive lead wires are electrically connected through wiring terminals to form an electrical input end 1115. The two negative lead wires are connected one-to-one with the negative ends of the two-phase lines of the winding, and the other ends of the two negative lead wires are electrically connected through wiring terminals to form an electrical output end 1116. The electrical input end 1115 of the first stator body 1112 is used as the power supply point of the axial flux motor 11, and the electrical output end 1116 of the stator body 1112 is electrically connected to the electrical input end 1115 of the second stator body 1112 through wiring terminals. The electrical output end 1116 of the second stator body 1112 is used as the neutral point of the axial flux motor 11, so that the two stator bodies 1112 are connected in series.

[0141] By connecting the windings of the two stator bodies 1112 in series, the two stators 111 can obtain the same current excitation, which is beneficial to reducing the difference in magnetic field strength between the two stators 111, thereby making the magnetic pull of the axial flux motor 11 more balanced, effectively improving the performance of the axial flux motor 11.

[0142] In some other embodiments, please refer to Figure 6. The axial flux motor 11 is a three-phase motor. The number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into three positive lead wires and three negative lead wires. One end of the three positive lead wires is connected to the positive end of the three-phase line of the winding in a one-to-one correspondence, and the other end of the three positive lead wires is electrically connected to form an electrical input end 1115 through a terminal block. The three negative lead wires are connected to the negative end of the three-phase line of the winding in a one-to-one correspondence, and the three negative lead wires are connected to the negative end of the three-phase line of the winding in a one-to-one correspondence. The other end of the wire is electrically connected through a terminal to form an electrical output end 1116, the electrical input end 1115 of the first stator body 1112 is electrically connected to the electrical input end 1115 of the second stator body 1112 to form a power supply point of the axial flux motor 11, and the electrical output end 1116 of the first stator body 1112 is electrically connected to the electrical output end 1116 of the second stator body 1112 to form a neutral point of the axial flux motor 11, so that the two stator bodies 1112 are connected in parallel.

[0143] In some further embodiments, the axial flux motor 11 is a two-phase motor, and the number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into two positive lead wires and two negative lead wires. One end of the two positive lead wires is connected one-to-one with the positive ends of the two-phase lines of the winding, and the other ends of the two positive lead wires are electrically connected through terminal blocks to form an electrical input end 1115. The two negative lead wires are connected one-to-one with the negative ends of the two-phase lines of the winding, and the other ends of the two negative lead wires are electrically connected through terminal blocks to form an electrical output end 1116. The electrical input end 1115 of the first stator body 1112 is electrically connected to the electrical input end 1115 of the second stator body 1112 to form a power supply point of the axial flux motor 11, and the electrical output end 1116 of the first stator body 1112 is electrically connected to the electrical output end 1116 of the second stator body 1112 to form a neutral point of the axial flux motor 11, so that the two stator bodies 1112 are connected in parallel.

[0144] By connecting the windings of the two stator bodies 1112 in parallel, the two stators 111 can have exactly the same wire output structure, thereby effectively reducing the manufacturing cost of the axial flux motor 11.

[0145] In some embodiments of the present application, referring to FIG. 7 , the axial flux motor 11 further includes two rotors 112 , and the stator 111 is disposed between the two rotors 112 .

[0146] It can be understood that the stator 111 and the two rotors 112 are coaxially arranged, that is, the central axis of the stator 111 and the central axes of the two rotors 112 coincide with each other.

[0147] By adopting the above technical solution, the volume of the dual-rotor axial flux motor 11 is effectively reduced.

[0148] In some embodiments of the present application, referring to Figure 7, the stator body 1112 includes a first iron core, a second iron core, a first winding wound on the first iron core, and a second winding wound on the second iron core. The lead wire 1113 is divided into a first lead wire 1113a connected to the first winding and a second lead wire 1113b connected to the second winding. Outlets are opened on both axial sides of the stator case 1111. The first lead wire 1113a is passed through the outlet located on one axial side of the stator case 1111, and the second lead wire 1113b is passed through the outlet located on the other axial side of the stator case 1111.

[0149] It can be understood that the first core and the first winding together constitute the first magnetic circuit of the axial flux motor 11. When the first winding is energized, it generates a first electromagnetic field, which magnetically couples with one rotor 112 to drive the rotor 112 to rotate. The second core and the second winding together constitute the second magnetic circuit of the axial flux motor 11. When the second winding is energized, it generates a second electromagnetic field, which magnetically couples with the other rotor 112 to drive the rotor 112 to rotate.

[0150] In some embodiments, the outer diameter of the stator 111 is larger than the outer diameters of the two rotors 112. Since the stator 111 and the two rotors 112 are coaxially arranged, in the radial direction of the axial flux motor 11, the outer peripheral side of the stator 111 protrudes from the outer peripheral side of the two rotors 112, so that a wiring space is formed between one axial side of the stator case 1111 and the outer peripheral side of one rotor 112, and between the other axial side of the stator case 1111 and the outer peripheral side of the other rotor 112, and the first lead wire 1113a and the second lead wire 1113b are passed through the corresponding outlets and enter the corresponding wiring space.

[0151] In this embodiment, the above-mentioned seal 1114 is divided into a first seal 1114a and a second seal 1114b. The first seal 1114a is arranged between the first lead wire 1113a and the edge of the corresponding outlet, and the second seal 1114b is arranged between the second lead wire 1113b and the edge of the corresponding outlet.

[0152] By adopting the above technical solution, without increasing the axial size of the axial flux motor 11, the two axial side spaces of the stator 111 can be effectively utilized, and there is no need to set a wiring structure on the outer peripheral side of the stator shell 1111 of the two stators 111, thereby effectively reducing the radial size of the axial flux motor 11.

[0153] In some embodiments of the present application, the first winding and the second winding are connected in series or in parallel via the lead wire 1113 .

[0154] In some embodiments, the axial flux motor 11 is a three-phase motor, and the number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into three first positive lead wires, three first negative lead wires, three second positive lead wires and three second negative lead wires. One end of the three first positive lead wires is connected to the positive end of the three-phase wire of the first winding in a one-to-one correspondence, and the other end of the three first positive lead wires is electrically connected to the first electrical input end through the wiring terminal. The three first negative lead wires are connected to the negative end of the three-phase wire of the first winding in a one-to-one correspondence, and the other end of the three first negative lead wires is electrically connected to the first electrical input end through the wiring terminal. Output end, one end of the three second positive lead wires is connected one-to-one with the positive end of the three-phase line of the second winding, and the other end of the three second positive lead wires is electrically connected through the wiring terminal to form a second electrical input end, the three second negative lead wires are connected one-to-one with the negative end of the three-phase line of the second winding, and the other end of the three second negative lead wires is electrically connected through the wiring terminal to form a second electrical output end, the first electrical input end is used as the power supply point of the axial flux motor 11, the first electrical output end is electrically connected to the second electrical input end through the wiring terminal, and the second electrical output end is used as the neutral point of the axial flux motor 11, so that the first winding and the second winding are connected in series.

[0155] In other embodiments, the axial flux motor 11 is a two-phase motor, and the number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into two first positive lead wires, two first negative lead wires, two second positive lead wires and two second negative lead wires. One end of the two first positive lead wires is connected to the positive end of the two-phase line of the first winding in a one-to-one correspondence, and the other end of the two first positive lead wires is electrically connected to form a first electrical input end through a wiring terminal. The two first negative lead wires are connected to the negative end of the two-phase line of the first winding in a one-to-one correspondence, and the other end of the two first negative lead wires is electrically connected to form a first electrical input end through a wiring terminal. Output end, one end of the two second positive lead wires is connected one-to-one with the positive end of the two-phase line of the second winding, and the other end of the two second positive lead wires is electrically connected through the wiring terminal to form a second electrical input end, the two second negative lead wires are connected one-to-one with the negative end of the two-phase line of the second winding, and the other end of the two second negative lead wires is electrically connected through the wiring terminal to form a second electrical output end, the first electrical input end is used as the power supply point of the axial flux motor 11, the first electrical output end is electrically connected to the second electrical input end through the wiring terminal, and the second electrical output end is used as the neutral point of the axial flux motor 11, so that the first winding and the second winding are connected in series.

[0156] By connecting the first winding and the second winding in series, the first winding and the second winding can obtain the same current excitation, which is beneficial to reducing the difference in magnetic field strength between the first winding and the second winding, thereby making the magnetic pull of the axial flux motor 11 more balanced, effectively improving the performance of the axial flux motor 11.

[0157] In some other embodiments, the axial flux motor 11 is a three-phase motor, and the number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into three first positive lead wires, three first negative lead wires, three second positive lead wires and three second negative lead wires. One end of the three first positive lead wires is connected to the positive end of the three-phase line of the first winding in a one-to-one correspondence, and the other end of the three first positive lead wires is electrically connected to form a first electrical input end through a wiring terminal. The three first negative lead wires are connected to the negative end of the three-phase line of the first winding in a one-to-one correspondence, and the other end of the three first negative lead wires is electrically connected to form a first The electrical output end, one end of the three second positive lead wires are connected one-to-one with the positive end of the three-phase line of the second winding, and the other end of the three second positive lead wires are electrically connected through the wiring terminal to form a second electrical input end, the three second negative lead wires are connected one-to-one with the negative end of the three-phase line of the second winding, and the other end of the three second negative lead wires are electrically connected through the wiring terminal to form a second electrical output end, the first electrical input end and the second electrical input end are electrically connected to form the power supply point of the axial flux motor 11, and the first electrical output end and the second electrical output end are electrically connected to form the neutral point of the axial flux motor 11, so that the first winding and the second winding are connected in parallel.

[0158] In some further embodiments, the axial flux motor 11 is a two-phase motor, and the number of lead wires 1113 is multiple, and the multiple lead wires 1113 are divided into two first positive lead wires, two first negative lead wires, two second positive lead wires and two second negative lead wires. One end of the two first positive lead wires is connected to the positive end of the two-phase line of the first winding in a one-to-one correspondence, and the other end of the two first positive lead wires is electrically connected to form a first electrical input end through a wiring terminal. The two first negative lead wires are connected to the negative end of the two-phase line of the first winding in a one-to-one correspondence, and the other end of the two first negative lead wires is electrically connected to form a first The electrical output end, one end of the two second positive lead wires are connected one-to-one with the positive ends of the two-phase lines of the second winding, and the other ends of the two second positive lead wires are electrically connected through the wiring terminal to form a second electrical input end, the two second negative lead wires are connected one-to-one with the negative ends of the two-phase lines of the second winding, and the other ends of the two second negative lead wires are electrically connected through the wiring terminal to form a second electrical output end, the first electrical input end and the second electrical input end are electrically connected to form the power supply point of the axial flux motor 11, and the first electrical output end and the second electrical output end are electrically connected to form the neutral point of the axial flux motor 11, so that the first winding and the second winding are connected in parallel.

[0159] By connecting the first winding and the second winding in parallel, the first winding and the second winding can have exactly the same output wire structure, thereby effectively reducing the manufacturing cost of the axial flux motor 11.

[0160] In a third aspect, referring to FIG. 3 , an embodiment of the present application provides an electric drive device 10 , comprising the axial flux motor 11 described in any one of the above embodiments.

[0161] Since the electric drive device 10 provided in the embodiment of the present application adopts the axial flux motor 11 described in any of the above embodiments, the volume of the electric drive device 10 is effectively reduced.

[0162] In a fourth aspect, referring to FIG. 1 , an embodiment of the present application provides an electric drive system 100 , including the electric drive device 10 described above.

[0163] Since the electric drive system 100 provided in the embodiment of the present application adopts the above-mentioned electric drive device 10 , the volume of the electric drive system 100 is effectively reduced.

[0164] In the fifth aspect, please refer to FIG1 . An embodiment of the present application provides an electric device including the above-mentioned electric drive system 100 .

[0165] Since the electric device provided in the embodiment of the present application adopts the above-mentioned electric drive system 100, the volume of the electric device is effectively reduced.

[0166] 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, applied to an axial flux motor, characterized in that: The stator comprises: The stator housing has a wire outlet opening on its axial side; A stator body, accommodated in the stator shell; A lead wire, one end of which is connected to the stator body, and the other end of which is passed through the wire outlet.

2. The stator according to claim 1, characterized in that: The stator further includes a sealing member, and the sealing member is arranged between the lead-out wire and an edge of the wire outlet.

3. The stator according to claim 2, characterized in that: The sealing member comprises a connecting portion and a sealing portion. There are multiple lead-out wires. The connecting portion is used to connect the multiple lead-out wires. The sealing portion is arranged between the connecting portion and an edge of the wire outlet.

4. The stator according to claim 3, characterized in that: The connecting portion is injection-molded and connected to the plurality of lead wires.

5. The stator according to any one of claims 2 to 4, characterized in that: A clamping groove is provided on the outer peripheral side of the sealing member, and the edge of the wire outlet is clamped in the clamping groove.

6. The stator according to any one of claims 1 to 5, characterized in that: The stator further includes a cooling medium, and the cooling medium is accommodated in the stator shell.

7. The stator according to any one of claims 1 to 6, characterized in that: The lead wire comprises a flexible part and a rigid part, one end of the rigid part is connected to the stator body, the other end of the rigid part is connected to one end of the flexible part, and the other end of the flexible part is passed through the wire outlet.

8. The stator according to claim 7, characterized in that: The flexible portion includes a plurality of sheets, and the plurality of sheets are stacked and connected.

9. The stator according to claim 8, characterized in that: One end of a plurality of the sheets close to the rigid part is fused into one body and welded to the rigid part.

10. The stator according to claim 8 or 9, characterized in that: The ends of the plurality of sheets away from the rigid part are welded into one body and passed through the wire outlet.

11. The stator according to any one of claims 7 to 10, characterized in that: The flexible portion includes a connecting section, a bending section and a lead-out section, the bending section is connected between one end of the connecting section and one end of the lead-out section, the other end of the connecting section is connected to the rigid portion, and the other end of the lead-out section is passed through the wire outlet.

12. The stator according to claim 11, characterized in that: The bending section is in an arc-shaped structure.

13. An axial flux motor, characterized in that: The axial flux machine comprises a stator as claimed in any one of claims 1-12.

14. The axial flux motor according to claim 13, characterized in that: The number of the stators is two, and the axial flux motor further includes a rotor, which is arranged between the two stators.

15. The axial flux motor according to claim 14, characterized in that: The wire outlet is provided on a side of the stator shell facing the rotor.

16. The axial flux motor according to claim 14 or 15, characterized in that: The stator body includes an iron core and a winding wound around the iron core, and the two windings are connected in series or in parallel through the lead wires.

17. The axial flux motor according to claim 13, characterized in that: The axial flux motor further includes two rotors, and the stator is arranged between the two rotors.

18. The axial flux motor according to claim 17, characterized in that: The stator body includes a first iron core, a second iron core, a first winding wound on the first iron core, and a second winding wound on the second iron core. The lead wire is divided into a first lead wire connected to the first winding and a second lead wire connected to the second winding. The two axial sides of the stator shell are provided with the lead outlets. The first lead wire is passed through the lead outlet located on one axial side of the stator shell, and the second lead wire is passed through the lead outlet located on the other axial side of the stator shell.

19. The axial flux motor according to claim 17 or 18, characterized in that: The stator body includes a first iron core, a second iron core, a first winding wound around the first iron core, and a second winding wound around the second iron core. The first winding and the second winding are connected in series or in parallel via the lead wire.

20. An electric drive device, characterized in that: The electric drive device comprises an axial flux motor as claimed in any one of claims 13-19.

21. An electric drive system, characterized in that: The electric drive system comprises the electric drive device according to claim 20.

22. An electric device, characterized in that: The electric device comprises the electric drive system according to claim 21.

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