Axial electric motor, power assembly and electric device

Abstract

The present application is applicable to the technical field of electric motors, and provides an axial electric motor (100), a power assembly (1000), and an electric device. The electric device comprises the power assembly (1000). The power assembly (1000) comprises the axial electric motor (100). The axial electric motor (100) comprises a rotor (10), a stator (20), and a wiring structure (40). The stator (20) and the rotor (10) are sequentially distributed in the axial direction (Z); the size of the stator (20) in the radial direction (Y) is greater than the size of the rotor (10) in the radial direction (Y), and the radial outer side of the rotor (10) and the stator (20) define an accommodating space (1001); and the wiring structure (40) is connected to the stator (20) and is at least partially located in the accommodating space (1001). In this way, the wiring structure (40) being at least partially located in the accommodating space (1001) allows the arrangement of the wiring structure (40) outside of the stator (20) in the radial direction (Y) to be reduced or even omitted, thereby reducing the size of the axial electric motor (100) in the radial direction (Y).

Description

Axial motors, powertrains and electric equipment

[0001] Cross-references

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on June 26, 2023, with application number 202310764688.X and application name "Axial Motor, Powertrain and Electric Equipment", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of motor technology, and in particular to an axial motor, a powertrain, and an electric device. Background Art

[0004] In the related art, axial motors have gained increasing attention due to their compact structure, high efficiency, and high power density. However, in some cases, the radial dimensions of axial motors are still relatively large, making it difficult to meet the high demands of users.

[0005] Summary of the Invention

[0006] In view of the above problems, the purpose of the embodiments of the present application is to provide an axial motor, a power assembly and an electric device that can improve the technical problem of the large radial size of the axial motor.

[0007] The technical solution adopted in the embodiment of this application is:

[0008] In a first aspect, an embodiment of the present application provides an axial motor, comprising:

[0009] rotor;

[0010] The stator and the rotor are distributed in sequence along the axial direction; the radial dimension of the stator is larger than the radial dimension of the rotor, and the radial outer side of the rotor and the stator define an accommodation space;

[0011] The wiring structure is connected to the stator and is at least partially located in the accommodating space.

[0012] The axial motor provided in the embodiment of the present application can reduce or even eliminate the arrangement of the wiring structure on the radial outside of the stator by having at least part of the wiring structure located on the radial outside of the rotor and within the accommodation space formed by the stator, thereby reducing the radial size of the axial motor.

[0013] In some embodiments, the axial motor further includes a casing, and the rotor, stator and wiring structure are all disposed in the casing.

[0014] By adopting this technical solution, the rotor, stator, and wiring structure are all located within the housing, effectively protecting these components. Furthermore, the wiring structure is located within the housing, rather than being located outside. This alleviates the problem of increased size of the axial motor caused by locating the wiring structure outside the housing, thereby improving the structural compactness of the axial motor.

[0015] In some embodiments, a groove is provided on one side of the housing radially facing the accommodating space.

[0016] By adopting this technical solution, the wiring structure or the first sealing structure can be accommodated within the groove without increasing the size of the housing. This helps improve the utilization of the internal space of the axial motor, thereby enhancing structural compactness and reducing the radial size of the axial motor. Furthermore, the stator's low-voltage wiring harness, electrical components, and the like can be arranged within the accommodation space and the groove. This improves the utilization of the internal space of the axial motor, thereby increasing its structural compactness and reducing its size.

[0017] In some embodiments, the housing is provided with a wiring hole, which is opposite to the wiring structure and is used for allowing the external structure to pass through to be connected to the wiring structure.

[0018] By adopting the above technical solution, the external structure can pass through the wiring hole to connect to the wiring structure. Specifically, the second copper bar of the external structure passes through the wiring hole to connect to the wiring structure. In this way, the external structure and the stator can be electrically connected.

[0019] In some embodiments, the axial motor further includes a first sealing structure, and the first sealing structure is used to seal the wiring hole.

[0020] Such an arrangement can achieve sealing inside and outside the casing, thereby realizing dust-proof and moisture-proof protection for the wiring structure, conductive parts, low-voltage wiring harness, etc. inside the casing.

[0021] In some embodiments, a groove is provided on the inner peripheral wall of the wiring hole. The groove is provided on a side of the housing radially facing the wiring structure, and at least a portion of the first sealing structure is provided in the groove.

[0022] By adopting the above technical solution, at least part of the first sealing structure is accommodated in the groove, which can improve the utilization rate of the internal space of the axial motor, thereby improving the structural compactness of the axial motor, which helps to reduce the radial size of the axial motor to achieve a miniaturized design of the axial motor.

[0023] In some embodiments, the first sealing structure includes a first sealing seat provided on the housing, the first sealing seat is provided with an opening, the opening is opposite to the wiring structure and corresponds to the wiring hole, and is used for allowing the external structure to pass through to connect to the wiring structure.

[0024] By adopting the above technical solution, the first sealing seat can seal the gap between the inner peripheral wall of the wiring hole and the external structure, so as to achieve sealing of the wiring hole.

[0025] In some embodiments, the first sealing structure further includes a first sealing ring, which is disposed in the opening and is used for allowing the external structure to pass through; the first sealing ring is used to axially press against the inner circumferential wall of the opening and the external structure.

[0026] Such a setting enables the first sealing ring to seal the gap between the external structure and the inner peripheral wall of the opening, that is, to achieve the sealing between the first sealing seat and the external structure, thereby achieving the sealing of the wiring hole, so as to achieve the dust-proof and moisture-proof sealing effect for the wiring structure, stator, rotor and other components inside the casing.

[0027] In some embodiments, the first sealing structure further includes a second sealing ring, which is disposed around the outside of the first sealing seat and presses against the housing and the first sealing seat.

[0028] Such an arrangement realizes the sealing between the housing and the first sealing seat, which helps to realize the sealing of the wiring hole, thereby achieving the dust-proof and moisture-proof sealing effect for the wiring structure, stator, rotor and other components inside the housing.

[0029] In some embodiments, the first sealing structure is configured to surround the outer periphery of the external structure and press the external structure and the housing along the axial direction of the axial motor.

[0030] With such an arrangement, the first sealing structure can seal the gap between the inner wall of the wiring hole and the external structure, that is, seal the wiring hole, thereby achieving a dust-proof and moisture-proof sealing effect on the wiring structure, stator, rotor and other components inside the casing.

[0031] In some embodiments, the axial motor further comprises a housing, wherein the rotor, the stator and the wiring structure are all disposed in the housing, and the wiring structure is disposed in the housing;

[0032] Alternatively, the axial motor further includes a housing arranged between the stator and the rotor, and the wiring structure is arranged in the housing.

[0033] By adopting the above technical solution, the wiring structure is set on the casing or shell, which can improve the position reliability of the wiring structure on the axial motor and facilitate the connection between the wiring structure and the stator, and between the wiring structure and the external structure.

[0034] In some embodiments, the axial motor further includes a conductive member connected to the stator and the wiring structure.

[0035] By adopting the above technical solution, the stator and the wiring structure can be indirectly connected through the conductive member, thereby facilitating the connection between the three-phase wires led out of the stator winding and the wiring structure.

[0036] In some embodiments, the wiring structure is provided with a plug hole, the conductive member is plugged into the plug hole, and a second sealing structure for sealing the plug hole is provided between the wiring structure and the conductive member.

[0037] By adopting the above technical solution, sealing can be achieved at the plug-in hole of the wiring structure, which can ensure the use of the wiring structure to a certain extent, and is conducive to ensuring the reliability of the electrical connection between conductive parts and between conductive parts and external structures.

[0038] In some embodiments, the second sealing structure includes a second sealing seat sleeved on the outer periphery of the conductive member and a third sealing ring sleeved on the outer periphery of the second sealing seat, and the third sealing ring presses against the inner peripheral wall of the plug hole and the second sealing seat.

[0039] With such arrangement, the third sealing ring and the second sealing seat can stably seal the gap between the inner peripheral wall of the plug hole and the conductive member.

[0040] In some embodiments, the axial motor also includes a casing, and the rotor, stator and wiring structure are all arranged in the casing; the axial motor also includes a shell arranged between the stator and the rotor, and a fourth sealing ring is provided on the outer sleeve of the shell, and the fourth sealing ring is radially pressed against the shell and the casing.

[0041] This arrangement can achieve sealing of the connection position between the casing and the shell, thus achieving sealing isolation between the stator and the accommodating space, and thus achieving moisture-proof protection of the wiring structure and conductive parts in the accommodating space.

[0042] In some embodiments, stators are provided on two opposite sides of the rotor along the axial direction, and the radial outer side of the rotor and the two adjacent stators are enclosed to form an accommodation space.

[0043] By adopting this technical solution, on the one hand, both axially adjacent stators can be used to drive the rotor between them, thereby increasing the output power of the axial motor. On the other hand, at least a portion of the wiring structure is accommodated within the accommodation space, so that the wiring structure does not increase the axial size of the axial motor, thereby reducing the axial size of the axial motor.

[0044] In some embodiments, two adjacent stators are connected to a wiring structure to form a parallel connection, and the wiring structure is used to conduct the stators and an external structure.

[0045] By adopting the above technical solution, the two stators can be connected in parallel through the wiring structure, and the wiring structure can also be connected to the external structure to achieve conduction between the two parallel stators and the external structure.

[0046] In some embodiments, a plurality of wiring structures are provided, and the plurality of wiring structures include a first wiring structure and a second wiring structure; two adjacent stators are connected to the first wiring structure to form a series connection; the two adjacent stators are also connected to the second wiring structure, and the second wiring structure is used to connect to an external structure to conduct the stator and the external structure.

[0047] By adopting the above technical solution, two adjacent stators can be connected in series and electrically connected to the external structure.

[0048] In a second aspect, an embodiment of the present application provides a powertrain including an axial motor.

[0049] The powertrain provided in the embodiments of the present application, by employing the axial motor described in the above embodiments, can reduce the radial dimensions of the axial motor. This improves the utilization of the internal space of the axial motor, helps improve the structural compactness of the powertrain, and thus achieves a miniaturized design of the powertrain.

[0050] In a third aspect, an embodiment of the present application provides an electric device, including an axial motor or a powertrain.

[0051] The powertrain provided in the embodiments of the present application, by employing the axial motor or powertrain described in the above embodiments, can reduce the radial dimensions of the axial motor. This improves the utilization of the internal space of the axial motor, helps improve the structural compactness of the electric device, and thus achieves a miniaturized design for the electric device.

[0052] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] 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 exemplary technical descriptions. 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.

[0054] FIG1 is a schematic diagram of a vehicle provided in some embodiments of the present application;

[0055] FIG2 is a schematic structural diagram of an axial motor provided in some embodiments of the present application;

[0056] FIG3 is a schematic structural diagram of an axial motor provided in some embodiments of the present application;

[0057] FIG4 is a schematic structural diagram of an axial motor provided in some embodiments of the present application;

[0058] FIG5 is a schematic structural diagram of an axial motor provided in some embodiments of the present application;

[0059] FIG6 is an exploded view of an axial motor provided in some embodiments of the present application;

[0060] FIG7 is a schematic diagram of the axial motor shown in FIG6 from another perspective;

[0061] FIG8 is an assembly cross-sectional view of the axial motor shown in FIG6 along AA;

[0062] FIG9 is an enlarged view of point B in FIG8 ;

[0063] FIG10 is a perspective schematic diagram of the first sealing structure of the axial motor shown in FIG6 ;

[0064] FIG11 is a schematic diagram of the first sealing structure shown in FIG10 from another perspective;

[0065] FIG12 is a partial schematic diagram of an axial motor provided in some embodiments of the present application;

[0066] FIG13 is a cross-sectional view taken along CC in FIG12;

[0067] FIG14 is an enlarged view of point D in FIG12 ;

[0068] FIG15 is a cross-sectional view taken along line EE of FIG12;

[0069] FIG16 is an enlarged view of point F in FIG15 ;

[0070] FIG17 is a partial schematic diagram of an axial motor provided in some other embodiments of the present application;

[0071] FIG18 is a cross-sectional view taken along line GG of FIG17 ;

[0072] FIG19 is an enlarged view of point H in FIG18 .

[0073] In the figures, the reference numerals are: 1000 - powertrain; 100 - axial motor; 200 - transmission; 300 - battery; 400 - controller; 4001 - second copper busbar; 1001-accommodation space; 10-rotor; 20-stator; 30-rotating shaft; 40-wiring structure; 40a-first wiring structure; 40b-second wiring structure; 401-plug-in hole; 50-casing; 501-groove; 502-wiring hole; 503-first limiting groove; 51-first outer shell; 52-second outer shell; 60-shell; 70-first sealing structure; 701-opening; 71-first sealing seat; 711-limiting part; 72-first sealing ring; 73-second sealing ring; 80-second sealing structure; 801-second limiting groove; 81-second sealing seat; 82-third sealing ring; 90-fourth sealing ring; 110-conductive part; 110a-first conductive part; 110b-second conductive part; 120-connecting part; 121-nut; 122-first copper busbar; Z-axial direction; Y-radial direction. DETAILED DESCRIPTION

[0074] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0075] In the description of this application, 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.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0077] In the description of this application, "a plurality of" means more than two, and unless otherwise specifically defined, "more than two" includes two. Accordingly, "a plurality of groups" means more than two groups, including two groups.

[0078] In the description of this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0079] In the description of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, in this application, the character " / " generally indicates that the related objects are in an "or" relationship.

[0080] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

[0081] In the related art, axial motors have gained increasing attention due to their compact structure, high efficiency, and high power density. However, in some cases, the radial dimensions of axial motors are still relatively large, making it difficult to meet the high demands of users.

[0082] For example, a wiring structure is typically provided radially outside the stator to electrically connect the stator to external components such as a controller. This increases the overall radial dimensions of the axial motor due to the wiring structure, hindering the miniaturization of electric vehicles, ships, and other electric equipment using the axial motor.

[0083] Based on the above considerations, an embodiment of the present application provides an axial motor, a powertrain, and an electric device. By locating at least part of the wiring structure on the radial outside of the rotor and within the accommodation space formed by the stator, the arrangement of the wiring structure on the radial outside of the stator can be reduced or even omitted, thereby reducing the radial size of the axial motor.

[0084] It's important to note that a motor, also known as an electric motor, generally consists of a rotor and a stator. A motor is a device that converts electrical energy into mechanical energy. Specifically, a motor uses energized coils to generate a rotating magnetic field, which acts on the rotor to create a magneto-electrodynamic torque. The stationary part of the motor is called the stator, while the rotating part is called the rotor.

[0085] Electric motors can be categorized as radial or axial. A radial motor is one in which the stator and rotor are arranged radially. For example, the stator is located on the outer periphery of the rotor, meaning the stator is enclosed within the rotor's outer periphery. Alternatively, the rotor is located on the outer periphery of the stator, meaning the rotor is enclosed within the stator's outer periphery. An axial motor is one in which the stator and rotor are arranged axially.

[0086] The axial motor mentioned in the embodiments of the present application can be applied to a powertrain as a power source; it can also be applied to an electric device as a power source. The powertrain mentioned in the embodiments of the present application can also be applied to an electric device as a power source.

[0087] Electric devices may include, but are not limited to, electric toys, electric tools, electric bicycles, electric motorcycles, ships, spacecraft, etc. Electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0088] The electric device can also be a vehicle or a vehicle chassis. The vehicle can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. The motor can be integrated with one or more of the following components: a power supply, a controller, a gearbox, etc., to form a powertrain.

[0089] For the convenience of explanation, the embodiment of the present application is described by taking the electric device as a vehicle as an example.

[0090] Please refer to Figure 1, which is a schematic diagram of the structure of a vehicle provided in some embodiments of the present application. The vehicle is internally provided with the aforementioned powertrain 1000, which can be located at the bottom, front, or rear of the vehicle. Powertrain 1000 can be used to increase vehicle power.

[0091] In some embodiments, the powertrain 1000 may include an axial motor 100, which serves as a power source for the powertrain 1000. It is understood that the powertrain 1000 is not limited to applications in vehicles, but may also be applied to other electric devices requiring power output.

[0092] In some embodiments, the powertrain 1000 may further include a controller 400 and a battery 300. The controller 400 is used to control the operation of the powertrain 1000. For example, it controls the starting, speed change, and stopping of the powertrain 1000, specifically the starting, speed change, and stopping of the axial motor 100. The controller 400 may also control the battery 300 to supply power to the powertrain 1000, specifically the axial motor 100, for example, to meet the vehicle's power needs during starting, navigation, and driving.

[0093] In some embodiments, powertrain 1000 may further include a transmission 200, which is connected to axial motor 100 to achieve torque change of axial motor 100. Transmission 200, also known as a gearbox, is a mechanism used to change the speed and torque of the engine. It can change the output shaft and input shaft transmission ratio in a fixed or step-by-step manner.

[0094] In some embodiments, the controller 400 can be integrated with the axial motor 100 to form a powertrain 1000. The battery 300 can also be integrated with the axial motor 100 to form a powertrain 1000. The transmission 200, the controller 400, and the axial motor 100 can also be integrated to form a powertrain 1000. The transmission 200, the controller 400, and the battery 300 can also be integrated with the axial motor 100 to form a powertrain 1000. Of course, in some embodiments, the powertrain 1000 can also integrate other structures, such as cooling oil circuits.

[0095] Please refer to Figures 2 to 5, which respectively show the structural schematic diagrams of the axial motor 100 provided in various embodiments of the present application. The axial motor 100 provided in the embodiment of the present application includes a rotor 10 and a stator 20, which are distributed in sequence along the axial direction Z.

[0096] The axial motor 100 further includes a rotating shaft 30 , and the rotor 10 is fixedly mounted on the rotating shaft 30 .

[0097] The rotating shaft 30 refers to a shaft-shaped structure in the axial motor 100 for outputting power. The rotating shaft 30 is fixedly connected to the rotor 10 so that the rotating shaft 30 can rotate under the drive of the rotor 10 to output power.

[0098] The stator 20 and the rotating shaft 30 can rotate relative to each other, thereby enabling the stator 20 and the rotor 10 to rotate relative to each other. For example, in some embodiments, the stator 20 can be supported on the rotating shaft 30 via bearings. In some embodiments, when the axial motor 100 includes a housing 50 as shown in FIG6 , the stator 20 can be fixed to the housing 50, supported by the housing 50, while the rotor 10 and the rotating shaft 30 are rotatably mounted in the housing 50, so that the stator 20 and the rotor 10 can rotate relative to each other, facilitating the stator 20 driving the rotor 10 to rotate.

[0099] The rotor 10 and the stator 20 are sequentially distributed along the axial direction Z, such that the rotor 10 is located on the side of the stator 20 along the axial direction Z, so that the stator 20 drives the rotor 10 to rotate, thereby driving the rotating shaft 30 to rotate.

[0100] When the energized coil on the stator 20 is energized, a magnetic field is generated and acts on the rotor 10 to form a magneto-electrical rotational torque, thereby rotating the rotor 10 and driving the shaft 30 to rotate together, so as to output power through the shaft 30.

[0101] In some embodiments, referring to FIG. 2 , there may be one rotor 10 and one stator 20 . The rotor 10 is located on one side of the stator 20 in the axial direction Z. The axial motor 100 has a simple structure and a small size.

[0102] In some embodiments, referring to FIG. 3 , the axial motor 100 includes two rotors 10 and a stator 20 . The two rotors 10 are located on opposite sides of the stator 20 in the axial direction Z, and both rotors 10 are fixedly connected to the rotating shaft 30 . In this way, one stator 20 can be used to drive the two rotors 10 to rotate, and drive the same rotating shaft 30 to rotate, thereby increasing the output power. Moreover, the structure of this axial motor 100 is more compact.

[0103] In some embodiments, referring to FIG. 4 , the axial motor 100 includes two stators 20 and a rotor 10 , and the two stators 20 are located on opposite sides of the rotor 10 in the axial direction Z. In this way, the same rotor 10 can be driven to rotate by the two stators 20 to increase the output power, and the structure of the axial motor 100 is more compact.

[0104] In some embodiments, referring to FIG5 , an axial motor 100 includes multiple rotors 10 and multiple stators 20 , which are arranged along the axial direction Z. A stator 20 is disposed between two adjacent rotors 10 along the axial direction Z, and a rotor 10 is disposed between two adjacent stators 20 along the axial direction Z. The multiple stators 20 drive the multiple rotors 10 to rotate, thereby driving the rotation shaft 30 to rotate, thereby increasing output power.

[0105] It should be noted that the axial direction Z refers to the axial direction Z of the axial motor 100, that is, the axial direction Z of the rotating shaft 30, i.e., the direction of the central axis of the rotating shaft 30. The radial direction Y refers to the radial direction Y of the axial motor 100, that is, the radial direction Y of the rotating shaft 30, i.e., the radial direction of the rotating shaft 30. In the description of the axial motor 100 above and below, the axial direction Z and radial direction Y have the same meanings as above and, unless otherwise specified, refer to the axial direction Z and radial direction Y of the axial motor 100.

[0106] It should also be noted that the side of the stator 20 along the axial direction Z that has the rotor 10 is the rotor side of the stator 20. Specifically, when the rotor 10 is provided on one side of the stator 20 along the axial direction Z, the side of the stator 20 that has the rotor 10 is the rotor side of the stator 20. When the rotor 10 is provided on both opposite sides of the stator 20 along the axial direction Z, both opposite sides of the stator 20 along the axial direction Z are the rotor sides of the stator 20.

[0107] Please refer to Figures 6 to 9 in conjunction with other figures. Figure 6 shows an exploded view of the axial motor 100 shown in Figure 4, Figure 7 shows a schematic diagram of Figure 6 from another perspective, Figure 8 shows a cross-sectional view of the axial motor 100 shown in Figure 6 along AA after assembly, and Figure 9 shows a partial enlarged view of Figure 8. Among them, in the axial motor 100 shown in Figures 6 to 9, the two stators 20 are in a series state. The axial motor 100 provided in the embodiment of the present application includes a rotor 10, a stator 20 and a wiring structure 40. The stator 20 and the rotor 10 are distributed in sequence along the axial direction Z. The radial Y dimension of the stator 20 is larger than the radial Y dimension of the rotor 10, and the radial Y outer side of the rotor 10 and the stator 20 define a receiving space 1001. The wiring structure 40 is connected to the stator 20, and at least a portion of the wiring structure 40 is located in the receiving space 1001.

[0108] The radial dimension Y of the stator 20 is greater than the radial dimension Y of the rotor 10, causing the stator 20 to protrude beyond the rotor 10 in the radial direction Y. Consequently, the radial outer side of the rotor 10 and the rotor 10 side of the stator 20 together form a receiving space 1001. In other words, the difference in radial dimension Y between the stator 20 and the rotor 10 allows the stator 20 and the rotor 10 to form the aforementioned receiving space 1001.

[0109] The wiring structure 40 refers to a component used to connect to the stator 20. The wiring structure 40 is connected to the stator 20, and can be used to realize the electrical connection between the stator 20 and external structures such as the controller 400, and can also be used to realize the series or parallel connection between the stator 20 and the stator 20. For example, in some embodiments, the wiring structure 40 is connected to the three-phase line led out of the winding of the stator 20, and is also connected to the external structure to realize the electrical connection between the external structure and the stator 20. In some other embodiments, the rotor 10 is provided with stators 20 on opposite sides along the axial direction Z, and the three-phase lines led out of the windings of the two stators 20 are connected to the wiring structure 40, so that the series or parallel connection of the two stators 20 can be realized. Among them, the number of wiring structures 40 can be one or more. When the wiring structure 40 is set to one, as shown in Figures 17 to 19, Figure 17 shows a partial schematic diagram of the axial motor 100 provided in other embodiments of the present application, Figure 18 is a cross-sectional view along GG of Figure 17, and Figure 19 is a partial enlarged view of Figure 18. In the axial motor 100 shown in Figures 17 to 19 , the two stators 20 are in parallel. The wiring structure 40 can be used to achieve electrical connection between the stator 20 and the external structure, while also enabling parallel connection between two adjacent stators 20. When there are multiple wiring structures 40, as shown in Figures 6 and 7 , one wiring structure 40 can be used to achieve series connection between two adjacent stators 20, such as the first wiring structure 40a described below; another wiring structure 40 can be used to achieve electrical connection between the stator 20 and the external structure, such as the second wiring structure 40b described below.

[0110] The three-phase wires extending from the stator 20 windings can be directly connected to the wiring structure 40. They can also be connected to the conductive member 110 discussed below, as shown in Figures 6 to 9 . The conductive member 110 is connected to the wiring structure 40 via the conductive member 110, thereby achieving an indirect connection between the stator 20 and the wiring structure 40. The conductive member 110 is a copper busbar.

[0111] The stator 20 can be electrically connected to the wiring structure 40. For example, in some embodiments, both the stator 20 and the external structure are electrically connected to the wiring structure 40, so that the wiring structure 40 bridges the stator 20 and the external structure. In still other embodiments, both adjacent stators 20 are electrically connected to the wiring structure 40, so that the wiring structure 40 bridges the two adjacent stators 20.

[0112] The stator 20 may also be non-conductive with the wiring structure 40, in which case the wiring structure 40 may be configured as an insulating bracket structure. In some embodiments, as shown in Figures 12, 15 to 19, Figure 12 shows a partial schematic diagram of the axial motor 100 provided in some embodiments of the present application, Figure 15 shows a cross-sectional view of Figure 12 along EE, and Figure 16 shows a partial enlarged view of Figure 15. In the axial motor 100 shown in Figures 12, 15 to 16, the two stators 20 are in a series state. After the two adjacent stators 20 are connected to the wiring structure 40, they can be connected in series or in parallel through a connector 120. As an example, as shown in Figures 8, 9, 16 and 19, the connector 120 includes a first copper bar 122, a plurality of nuts 121 and a plurality of bolts, and the conductive parts 110 of the two stators 20 are all inserted into the wiring structure 40, and the first copper bar 122 covers the conductive parts 110 of the two stators 20. At least one bolt passes through the first copper bar 122 and the conductive member 110 of one of the stators 20 in sequence and is locked by a nut 121; at least one bolt passes through the first copper bar 122 and the conductive member 110 of the other stator 20 in sequence and is locked by a nut 121. Based on this, the series or parallel connection of the two stators 20 is achieved. In some further embodiments, as shown in Figures 8 and 9, after the stator 20 and the external structure are connected to the wiring structure 40, conduction can be achieved through the connector 120. As an example, as shown in Figures 8 and 9, the connector 120 includes a bolt and a nut 121, and the output end of the external structure is provided with a second copper bar 4001. The conductive member 110 of the stator 20 and the second copper bar 4001 are both connected to the wiring structure 40, and the nut 121 passes through the second copper bar 4001 and the conductive member 110 in sequence and is locked by the nut 121, so as to achieve conduction between the stator 20 and the external structure.

[0113] The wiring structure 40 may be completely located within the accommodation space 1001, or partially located within the accommodation space 1001 and partially located outside the accommodation space 1001. Regarding the solution in which the wiring structure 40 is only partially located within the accommodation space 1001: when the rotor 10 has a stator 20 on one side along the axial direction Z, a portion of the wiring structure 40 along the radial direction Y may be located outside the accommodation space 1001, and a portion of the wiring structure 40 along the axial direction Z may also be located outside the accommodation space 1001. When the rotor 10 has stators 20 on opposite sides along the axial direction Z, a portion of the wiring structure 40 along the radial direction Y may be located outside the accommodation space 1001.

[0114] In the axial motor 100 provided in the embodiment of the present application, at least a portion of the wiring structure 40 is located within the accommodation space 1001 formed by the radially outer side of the rotor 10 and the stator 20. This allows the wiring structure 40 to utilize the space radially outer side of the rotor 10 to the maximum extent possible. This can reduce or even eliminate the need for the wiring structure 40 to be located radially outer side of the stator 20, thereby reducing the radial dimension of the axial motor 100. This improves the utilization of the internal space of the axial motor 100 and contributes to improving the structural compactness of the axial motor 100.

[0115] In some embodiments, please refer to FIG. 6 to FIG. 9 together, and in combination with other drawings, the axial motor 100 may further include a housing 50 , and the rotor 10 , the stator 20 and the wiring structure 40 are all disposed in the housing 50 .

[0116] The housing 50 is the outer shell structure of the axial motor 100 .

[0117] By adopting the above technical solution, on the one hand, the rotor 10, stator 20, and wiring structure 40 are all disposed within the housing 50, enabling the housing 50 to effectively protect the rotor 10, stator 20, wiring structure 40, and other components. Furthermore, the wiring structure 40 is disposed within the interior space of the housing 50, rather than being disposed externally. This alleviates the problem of increased size of the axial motor 100 caused by disposing the wiring structure 40 externally, thereby improving the structural compactness of the axial motor 100.

[0118] In some embodiments, referring to FIG. 8 and FIG. 9 together, and in combination with other drawings, a groove 501 is defined on one side of the housing 50 along the radial direction Y toward the accommodating space 1001 .

[0119] It can be understood that the inner wall of the housing 50 is provided with a groove 501 , and the groove 501 is arranged along the radial direction Y of the axial motor 100 toward the accommodating space 1001 .

[0120] The groove 501 may be one, and the groove 501 is an annular groove arranged around the outer circumference of the rotor 10. The number of the grooves 501 may also be multiple, and the multiple grooves 501 may be arranged in sequence around the outer circumference of the rotor 10.

[0121] By adopting the above technical solution, on the one hand, the wiring structure 40 or the first sealing structure 70 described below can be accommodated within the groove 501 without increasing the size of the housing 50 to achieve this arrangement, which helps to improve the utilization rate of the internal space of the axial motor 100, thereby improving the structural compactness and further reducing the radial Y dimension of the axial motor 100. On the other hand, the low-voltage wiring harness and electrical components of the stator 20 can be arranged within the accommodating space 1001 and the groove 501. This can improve the utilization rate of the internal space of the axial motor 100, thereby improving the structural compactness of the axial motor 100 and reducing the size of the axial motor 100.

[0122] In some embodiments, please refer to FIG. 8 and FIG. 9 together, and in combination with other figures, the housing 50 is provided with a wiring hole 502 , which is opposite to the wiring structure 40 and is used for allowing an external structure to pass through and connect to the wiring structure 40 .

[0123] The wiring hole 502 is provided through the housing 50 along the radial direction Y, such that one end of the wiring hole 502 is opposite to the wiring structure 40 along the radial direction Y, and the other end of the wiring hole 502 is connected to the outside.

[0124] When there is only one wiring structure 40, wiring hole 502 faces that wiring structure 40. When there are multiple wiring structures 40, wiring hole 502 faces the wiring structure 40 that needs to be connected to an external structure. As an example, as shown in Figures 6, 7, 12, 13, and 15, Figure 13 shows a cross-sectional view taken along line CC of Figure 12. There are two wiring structures 40, namely a first wiring structure 40a and a second wiring structure 40b. The wiring structure 40 that needs to be connected to an external structure is the second wiring structure 40b, and wiring hole 502 faces the second wiring structure 40b.

[0125] By adopting the above technical solution, the external structure can pass through the wiring hole 502 to connect to the wiring structure 40. Specifically, the second copper busbar 4001 of the external structure passes through the wiring hole 502 to connect to the wiring structure 40. In this way, the external structure and the stator 20 can be electrically connected.

[0126] In some embodiments, please refer to FIG. 6 to FIG. 9 together, and in combination with other drawings, the axial motor 100 may further include a first sealing structure 70 , and the first sealing structure 70 is used to seal the wiring hole 502 .

[0127] The first sealing structure 70 is a component having sealing functions such as dustproof and moistureproof. The first sealing structure 70 is used to seal the wiring hole 502 , specifically to seal the gap between the external structure and the inner peripheral wall of the wiring hole 502 .

[0128] With such an arrangement, the inside and outside of the housing 50 can be sealed, thereby achieving dust-proof and moisture-proof protection for the wiring structure 40 , the conductive member 110 , the low-voltage wiring harness, etc. inside the housing 50 .

[0129] In some embodiments, please refer to Figures 6 to 9 together, and in combination with other figures, the inner wall of the wiring hole 502 is provided with a groove 501, the groove 501 is provided on the side of the housing 50 along the radial direction Y toward the wiring structure 40, and at least a portion of the first sealing structure 70 is provided in the groove 501.

[0130] It can be understood that the groove 501 involved in this embodiment has the same structure as the groove 501 involved in the above embodiment.

[0131] It is also understandable that when there is only one groove 501, the groove 501 is opposite to the wiring structure 40 to be connected to the external structure along the radial direction Y, and the groove 501 is provided on the inner circumferential wall of the wiring hole 502. When there are multiple grooves 501, one groove 501 is provided on the inner circumferential wall of the wiring hole 502, and the groove 501 is arranged opposite to the wiring structure 40 to be connected to the external structure along the radial direction Y.

[0132] Based on this, the external structure can pass through the wiring hole 502 to connect to the wiring structure 40. At least part of the first sealing structure 70 is disposed in the groove 501 to seal the gap between the inner peripheral wall of the wiring hole 502 and the external structure, thereby achieving sealing inside and outside the housing 50.

[0133] The first sealing structure 70 may be completely located within the groove 501. Alternatively, a portion of the first sealing structure 70 may be located within the groove 501, while another portion may be located outside the groove 501. The portion of the first sealing structure 70 located outside the groove 501 may extend beyond the groove 501 in the radial direction Y toward the wiring structure 40, or may extend in the axial direction Z into the wiring hole 502.

[0134] By adopting the above technical solution, at least a portion of the first sealing structure 70 is accommodated in the groove 501, thereby improving the utilization rate of the internal space of the axial motor 100 and improving the structural compactness of the axial motor 100, which helps to reduce the radial Y dimension of the axial motor 100 and realize the miniaturized design of the axial motor 100.

[0135] In some embodiments, referring to Figures 6 to 11 in conjunction with other figures, Figure 10 illustrates a perspective schematic diagram of a first sealing structure 70 of an axial motor 100 provided in some embodiments of the present application, and Figure 11 illustrates a plan view of Figure 10 . The first sealing structure 70 may include a first sealing seat 71 disposed on the housing 50 and having an opening 701 defined therein. The opening 701 is opposite the wiring structure 40 and corresponds to the wiring hole 502, and is configured to allow an external structure to pass therethrough for connection to the wiring structure 40.

[0136] Opening 701 extends through first sealing seat 71 along radial direction Y. Furthermore, opening 701 is opposite wiring structure 40 along radial direction Y and corresponds to wiring hole 502 along radial direction Y. Thus, an external structure can pass through opening 701 to connect to wiring structure 40. The correspondence between opening 701 and wiring hole 502 means that at least a portion of wiring hole 502 overlaps with opening 701.

[0137] By adopting the above technical solution, the first sealing seat 71 can seal the gap between the inner peripheral wall of the wiring hole 502 and the external structure, so as to achieve sealing of the wiring hole 502.

[0138] At least a portion of the first sealing seat 71 is disposed in the groove 501 .

[0139] In some embodiments, referring to Figures 8 to 11 and other figures, the first sealing structure 70 further includes a first sealing ring 72. The first sealing ring 72 is disposed within the opening 701 and is configured to allow the external structure to pass through. The first sealing ring 72 is configured to press against the inner circumferential wall of the opening 701 and the external structure along the axial direction Z.

[0140] The first sealing ring 72 can be a component with sealing performance such as a rubber ring or a silicone ring.

[0141] The first sealing ring 72 is axially arranged to penetrate the radial direction Y of the motor 100 , so that when the first sealing ring 72 is located in the opening 701 , the external structure can pass through the first sealing ring 72 when passing through the opening 701 .

[0142] When the external structure is inserted through the first sealing ring 72, the first sealing ring 72 is sleeved outside the external structure, and the inner circumferential wall of the first sealing ring 72 presses against the outer circumferential wall of the external structure along the axial direction Z of the motor 100. The outer circumferential wall of the first sealing ring 72 presses against the inner circumferential wall of the opening 701 along the axial direction Z of the motor 100. In this way, the first sealing ring 72 presses against the inner circumferential wall of the opening 701 and the external structure along the axial direction Z of the motor 100.

[0143] Such a setting enables the first sealing ring 72 to seal the gap between the external structure and the inner peripheral wall of the opening 701, that is, to seal between the first sealing seat 71 and the external structure, thereby sealing the wiring hole 502, so as to achieve dust-proof and moisture-proof sealing effects on the wiring structure 40, stator 20, rotor 10 and other components inside the casing 50.

[0144] In some embodiments, please refer to Figures 8 to 11 and other figures. The first sealing structure 70 also includes a second sealing ring 73. The second sealing ring 73 is arranged around the outer periphery of the first sealing seat 71 and presses against the housing 50 and the first sealing seat 71 along the axial direction Z.

[0145] The second sealing ring 73 can be a component with sealing performance such as a rubber ring or a silicone ring.

[0146] The second sealing ring 73 is disposed through the motor 100 in the radial direction Y, so that the second sealing ring 73 can be disposed around the outer circumference of the first sealing seat 71 in the radial direction Y of the motor 100. Furthermore, the inner circumferential wall of the second sealing ring 73 presses against the outer circumferential wall of the first sealing seat 71 in the axial direction Z of the motor 100, while the outer circumferential wall of the second sealing ring 73 presses against the housing 50 in the axial direction Z of the motor 100.

[0147] Such an arrangement realizes the sealing between the housing 50 and the first sealing seat 71, which helps to realize the sealing of the wiring hole 502, thereby achieving the dust-proof and moisture-proof sealing effect for the wiring structure 40, stator 20, rotor 10 and other components inside the housing 50.

[0148] In some embodiments, referring to FIG8 and FIG9 together, and in conjunction with other figures, the housing 50 is provided with a first limiting groove 503. The first limiting groove 503 is provided on the inner circumferential wall of the wiring hole 502 along the axial direction Z of the motor 100; or, the first limiting groove 503 is provided on the inner circumferential wall of the groove 501 along the axial direction Z of the motor 100; or, the first limiting groove 503 is provided on the inner circumferential wall of both the wiring hole 502 and the groove 501 along the axial direction Z of the motor 100.

[0149] The first terminal block has a limiting portion 711 , which is inserted into the first limiting groove 503 to limit the first terminal block and the housing 50 in the radial direction Y of the axial motor 100 .

[0150] In some embodiments, the first sealing seat 71 may be made of a sealing member such as rubber or silicone. Alternatively, the first sealing seat 71 may be made of a plastic structure. The plastic structure provides a highly reliable connection between the first sealing seat 71 and the housing 50, thereby maintaining the positions of the first sealing ring 72 and the second sealing ring 73 in the housing 50. This allows the first sealing ring 72 and the second sealing ring 73 to better perform their sealing functions and seal the wiring hole 502.

[0151] In some embodiments, the first sealing structure 70 is configured to surround the external structure and press the external structure and the housing 50 along the axial direction Z.

[0152] It can be understood that the first sealing structure 70 can be a rubber ring, a silicone ring or other components.

[0153] The first sealing structure 70 is disposed around the outer periphery of the external structure. Furthermore, the inner circumferential wall of the first sealing structure 70 presses against the outer circumferential wall of the external structure along the axial direction Z of the motor 100, while the outer circumferential wall of the first sealing structure 70 presses against the housing 50 along the axial direction Z of the motor 100. In this way, the first sealing structure 70 seals the gap between the inner circumferential wall of the wiring hole 502 and the external structure, thereby sealing the wiring hole 502 and achieving a dust-proof and moisture-proof sealing effect for components within the housing 50, such as the wiring structure 40, stator 20, and rotor 10.

[0154] In some embodiments, the axial motor 100 further includes a housing 50, wherein the rotor 10, the stator 20, and the wiring structure 40 are all disposed within the housing 50, and the wiring structure 40 is disposed within the housing 50. Alternatively, referring to Figures 6, 7, and 12, the axial motor 100 further includes a casing 60 disposed between the stator 20 and the rotor 10, and the wiring structure 40 is disposed within the casing 60.

[0155] The housing 60 is disposed between the rotor 10 and the stator 20 along the axial direction Z of the axial motor 100 , so as to achieve axial Z isolation between the rotor 10 and the stator 20 .

[0156] When stators 20 are provided on opposite sides of the rotor 10 along the axial direction Z, a housing 60 may be provided between the rotor 10 and each stator 20. Furthermore, when there is a single wiring structure 40, it is provided in one of the housings 60. When there are multiple wiring structures 40, the multiple wiring structures 40 may be spaced apart and provided in the same housing 60, or they may be provided in two separate housings 60.

[0157] By adopting the above technical solution, the wiring structure 40 is set on the casing 50 or the shell 60, which can improve the position reliability of the wiring structure 40 on the axial motor 100, and facilitate the connection between the wiring structure 40 and the stator 20, and between the wiring structure 40 and the external structure.

[0158] When the wiring structure 40 is disposed in the housing 50, the wiring structure 40 can be disposed in the housing 50 by integral molding, welding, bonding, etc. When the wiring structure 40 is disposed in the shell 60, the wiring structure 40 can be disposed in the shell 60 by integral molding, welding, bonding, etc.

[0159] When a housing 60 is provided between the stator 20 and the rotor 10 and the stator 20 is connected with a conductive member 110 , the conductive member 110 may pass through the housing 60 to be connected to the wiring structure 40 at least partially located in the accommodating space 1001 .

[0160] In some embodiments, please refer to FIG. 6 to FIG. 9 together with other drawings. The axial motor 100 may include a housing 50 and a shell 60 . The shell 60 is disposed in the housing 50 .

[0161] Specifically, the housing 50 may include a first outer shell 51 and a second outer shell 52. The stator 20, rotor 10, housing 60, and wiring structure 40 are all disposed within the space enclosed by the first and second outer shells 51, 52. As an example, stators 20 are disposed on opposite sides of the rotor 10 along the axial direction Z, with a housing 60 located between the rotor 10 and each stator 20. Thus, one stator 20 is disposed within the space enclosed by one housing 60 and the first outer shell 51, while the other stator 20 is disposed within the space enclosed by the other housing 60 and the second outer shell 52.

[0162] The wiring hole 502 and the groove 501 mentioned above can be provided in the first housing 51 or in the second housing 52 , or even at the connection position between the first housing 51 and the second housing 52 .

[0163] In some embodiments, please refer to FIG. 6 to FIG. 9 together, and in combination with other drawings, the axial motor 100 may further include a conductive member 110 , and the conductive member 110 is connected to the stator 20 and the wiring structure 40 .

[0164] The conductive member 110 may be a copper busbar or other conductive components.

[0165] The conductive member 110 is connected to the stator 20. Specifically, the three-phase wires drawn from the winding of the stator 20 are connected to the conductive member 110 and are electrically connected to the conductive member 110. When there are multiple stators 20, each stator 20 has a conductive member 110.

[0166] The conductive member 110 is connected to the wiring structure 40 and can be electrically conductive with the wiring structure 40. Thus, the wiring structure 40 can bridge the conductive members 110 of two stators 20, as well as bridge the conductive members 110 and external structures. The conductive member 110 is connected to the wiring structure 40 and can be electrically disconnected from the wiring structure 40. Thus, electrical conductivity can be achieved between the conductive members 110 of two stators 20 at the wiring structure 40 via the connector 120, and electrical conductivity can also be achieved between the conductive members 110 and external structures at the wiring structure 40 via the connector 120.

[0167] By adopting the above technical solution, the stator 20 and the wiring structure 40 can be indirectly connected through the conductive member 110 , thereby facilitating the connection between the three-phase lines led out of the windings of the stator 20 and the wiring structure 40 .

[0168] In some embodiments, referring to Figures 8, 9, 12 to 14 in conjunction with other figures, Figure 14 is a partial enlarged view of Figure 12. The wiring structure 40 defines a plug hole 401, into which the conductive member 110 is inserted, and a second sealing structure 80 is provided between the wiring structure 40 and the conductive member 110 to seal the plug hole 401.

[0169] The conductive member 110 is inserted into the insertion hole 401 to achieve connection between the conductive member 110 and the wiring structure 40 .

[0170] The second sealing structure 80 is a component with sealing performance and is used to seal the gap between the inner peripheral wall of the plug hole 401 and the conductive member 110 to achieve sealing of the plug hole 401 .

[0171] By adopting the above technical solution, sealing can be achieved at the plug hole 401 of the wiring structure 40, which can ensure the use of the wiring structure 40 to a certain extent, and is conducive to ensuring the reliability of the electrical connection between the conductive parts 110 and the conductive parts 110, and between the conductive parts 110 and the external structure.

[0172] In some embodiments, please refer to Figures 8, 9 and 14 together, and in combination with other figures, the second sealing structure 80 includes a second sealing seat 81 and a third sealing ring 82, the second sealing seat 81 is sleeved on the outer periphery of the conductive part 110, the third sealing ring 82 is sleeved on the outer periphery of the second sealing seat 81, and the third sealing ring 82 is pressed against the inner wall of the plug hole 401 and the second sealing seat 81.

[0173] The second sealing seat 81 is a component used to connect the third sealing ring 82 and the conductive member 110. The second sealing seat 81 is mounted on the outer periphery of the conductive member 110, and the third sealing ring 82 is mounted on the outer periphery of the second sealing seat 81. This improves the positional stability and reliability of the third sealing ring 82 on the outer periphery of the conductive member 110, thereby facilitating the sealing of the third sealing ring 82 against the insertion hole 401.

[0174] The third sealing ring 82 can be a component with sealing performance such as a rubber ring or a silicone ring.

[0175] The third sealing ring 82 is sleeved on the outer circumference of the second sealing seat 81 , and the inner circumferential wall of the third sealing ring 82 presses against the second sealing seat 81 , and the outer circumferential wall of the third sealing ring 82 presses against the inner circumferential wall of the insertion hole 401 .

[0176] With such arrangement, the third sealing ring 82 and the second sealing seat 81 can stably seal the gap between the inner peripheral wall of the plug hole 401 and the conductive member 110 .

[0177] In some embodiments, referring to Figures 8, 9, and 14 in conjunction with other figures, a plug hole 401 is provided in the wiring structure 40 along the axial direction Z of the axial motor 100, and the conductive member 110 is plugged into the plug hole 401 along the axial direction Z of the axial motor 100. This arrangement facilitates plugging the conductive member 110 into the plug hole 401 during the arrangement of the stator 20 and the rotor 10, thereby facilitating the arrangement of the axial motor 100.

[0178] Based on this, the second sealing seat 81 is sleeved on the outer periphery of the conductive member 110 in the axial direction Z of the axial motor 100, and the third sealing ring 82 is sleeved on the outer periphery of the second sealing seat 81 in the axial direction Z of the axial motor 100. Furthermore, the outer peripheral wall of the third sealing ring 82 presses against the inner peripheral wall of the insertion hole 401 in the radial direction Y of the axial motor 100, and the inner peripheral wall of the third sealing ring 82 presses against the outer peripheral wall of the third sealing seat in the radial direction Y of the axial motor 100.

[0179] In some embodiments, to improve the fixing reliability of the second sealing seat 81 to the conductive member 110 and the third sealing ring 82 respectively, the second sealing seat 81 can be set as a plastic part, and the second sealing seat 81 is fixed to the outer periphery of the conductive member 110 by injection molding.

[0180] In some embodiments, the outer wall of the second sealing seat 81 is provided with a second limiting groove 801, and the third sealing ring 82 is disposed in the second limiting groove 801. In this way, the reliability of the third sealing ring 82 on the second sealing seat 81 can be improved.

[0181] The third sealing ring 82 can be limited in the second limiting groove 801 along the axial direction Z of the motor 100 , thereby improving the limiting of the third sealing ring 82 , the conductive member 110 , and the plug hole 401 in the axial direction Z.

[0182] In some embodiments, the second sealing structure 80 may not include the second sealing seat 81, but instead a third sealing ring 82 may be sleeved around the outer periphery of the conductive member 110. Furthermore, the inner periphery of the third sealing ring 82 directly presses against the conductive member 110, while the outer periphery of the third sealing ring 82 presses against the inner periphery of the plug hole 401. In this way, the plug hole 401 can be sealed.

[0183] In some embodiments, please refer to Figures 8, 9 and 14 together, and in combination with other figures, the axial motor 100 also includes a shell 60 arranged between the stator 20 and the rotor 10, and a fourth sealing ring 90 is provided on the outer cover of the shell 60. The fourth sealing ring 90 presses against the shell 60 and the housing 50 along the radial direction Y.

[0184] The fourth sealing ring 90 can be a component with sealing performance such as a rubber ring or a silicone ring.

[0185] The fourth sealing ring 90 is sleeved on the outer periphery of the housing 60 around the axial direction Z of the axial motor 100, and the inner peripheral wall of the fourth sealing ring 90 is pressed against the housing 60 along the radial direction Y of the axial motor 100, and the outer peripheral wall of the fourth sealing ring 90 is pressed against the casing 50 along the radial direction Y of the axial motor 100.

[0186] This arrangement can achieve sealing of the connection between the housing 50 and the shell 60. Thus, the stator 20 and the accommodating space 1001 can be sealed and isolated, thereby achieving moisture-proof protection for the wiring structure 40 and the conductive member 110 in the accommodating space 1001.

[0187] In some embodiments, referring to FIG. 6 to FIG. 8 and other drawings, stators 20 are provided on opposite sides of the rotor 10 along the axial direction Z, and the radial outer side of the rotor 10 and the two adjacent stators 20 enclose the above-mentioned accommodation space 1001.

[0188] By adopting the above technical solution, on the one hand, two stators 20 adjacent in the axial direction Z can both be used to drive the rotor 10 between the two stators 20, thereby increasing the output power of the axial motor 100. On the other hand, at least a portion of the wiring structure 40 is accommodated within the accommodation space 1001, so that the installation of the wiring structure 40 does not increase the axial Z dimension of the axial motor 100, thereby reducing the axial Z dimension of the axial motor 100.

[0189] It is understandable that both stators 20 may be provided with a conductive member 110 , and each stator 20 may be connected to the wiring structure 40 via the conductive member 110 .

[0190] It is understandable that, in some embodiments, the axial motor 100 may be configured such that the stator 20 is disposed on only one side of the axial direction Z of the rotor 10 .

[0191] In some embodiments, referring to Figures 8, 9, 12, 13, 15, and 16, and in conjunction with other figures, a plurality of wiring structures 40 are provided, and the plurality of wiring structures 40 include a first wiring structure 40a and a second wiring structure 40b. Two adjacent stators 20 are connected to the first wiring structure 40a to form a series connection. Two adjacent stators 20 are also connected to the second wiring structure 40b, which is used to connect to an external structure to provide electrical continuity between the stators 20 and the external structure.

[0192] The plurality of wiring structures 40 are divided into at least one first wiring structure 40a and at least one second wiring structure 40b. As shown in FIG13 , there is one first wiring structure 40a and one second wiring structure 40b. As shown in FIG16 , the first wiring structure 40a is used to connect two stators 20 in series. As shown in FIG9 and FIG12 , the second wiring structure 40b is used to connect the stator 20 to the external structure.

[0193] Each stator 20 is provided with a plurality of conductive members 110. The plurality of conductive members 110 of each stator 20 are divided into at least one first conductive member 110a and at least one second conductive member 110b. As shown in FIG12 , the number of the first conductive member 110a and the number of the second conductive member 110b are both one.

[0194] As shown in Figures 12, 15, and 16, the first conductive members 110a of the two stators 20 are each connected to the first wiring structure 40a to achieve series connection of the two stators 20. In some possible designs, the first conductive members 110a of the two stators 20 can be electrically conductive with the first wiring structure 40a, so that the first wiring structure 40a bridges the two first conductive members 110a, thereby achieving series connection of the two stators 20. In some possible designs, the first conductive members 110a of the two stators 20 can also be electrically non-conductive with the first wiring structure 40a. As an example, as shown in Figures 15 and 16, a first copper bar 122 covers the first conductive members 110a of the two stators 20 to achieve electrical connection between the two first conductive members 110a, thereby achieving series connection of the two stators 20. The first copper bar 122 can be secured to the conductive members 110 of the two stators 20 using bolts and nuts 121 or other means to maintain the series connection of the two stators 20.

[0195] As shown in Figures 8, 9, 12, and 13, the second conductive members 110b of the two stators 20 are both connected to the second wiring structure 40b. In some possible designs, the second wiring structure 40b can be electrically connected to one of the second conductive members 110b. Furthermore, the second wiring structure 40b can also be electrically connected to an external structure, so that the second wiring structure 40b bridges the second conductive member 110b and the external structure, thereby achieving electrical connection between the two stators 20 connected in series and the external structure.

[0196] In some possible designs, the second wiring structure 40b may not be electrically connected to the second conductive member 110b or the external structure. Instead, the second copper busbar 4001 of the external structure and one of the second conductive members 110b may be electrically connected at the second wiring structure 40b. Furthermore, the second copper busbar 4001 and the second conductive member 110b may be secured together using bolts and nuts 121 or other methods.

[0197] By adopting the above technical solution, two adjacent stators 20 can be connected in series and electrically connected to the external structure.

[0198] In some embodiments, referring to Figures 17 to 19 and other figures, two adjacent stators 20 are connected to a wiring structure 40 to form a parallel connection. The wiring structure 40 is used to conduct the stator 20 with the external structure.

[0199] It is understandable that the number of the wiring structure 40 is one. Each of the two stators 20 can be provided with a conductive member 110, and the conductive members 110 of the two stators 20 are connected to the wiring structure 40 so that the two stators 20 are connected in parallel. Wherein, the two conductive members 110 are both connected to the wiring structure 40 to achieve bridging of the two conductive members 110, thereby achieving parallel connection of the two stators 20. The two conductive members 110 may also not be connected to the wiring structure 40, but the first copper bar 122 of the connector 120 covers the conductive members 110 of the two stators 20 to achieve conduction of the two conductive members 110, thereby achieving parallel connection of the two stators 20. Wherein, as shown in the figure, the first copper bar 122 can be respectively fixed to the conductive members 110 of the two stators 20 by bolts and nuts 121 or other means to maintain the parallel connection of the two stators 20.

[0200] Furthermore, the external structure can be connected to the wiring structure 40 and electrically connected to the wiring structure 40 to achieve electrical connection between the external structure and the conductive member 110. The external structure can also be connected to the wiring structure 40 and connected to the conductive member 110 through the connector 120 to electrically connect to the conductive member 110.

[0201] By adopting the above technical solution, the two stators 20 can be connected in parallel through the wiring structure 40, and the wiring structure 40 can also be connected to an external structure to achieve conduction between the two parallel stators 20 and the external structure.

[0202] Based on the above concept, referring to FIG. 1 and in combination with other figures, an embodiment of the present application further provides a powertrain 1000, which includes an axial motor 100. The axial motor 100 in this embodiment is the same as the axial motor 100 in the previous embodiment. For details, please refer to the relevant description of the axial motor 100 in the previous embodiment, which will not be repeated here.

[0203] The powertrain 1000 provided in the embodiment of the present application, by employing the axial motor 100 of the aforementioned embodiment, can reduce the radial Y dimension of the axial motor 100. This improves the utilization rate of the internal space of the axial motor 100, helps improve the structural compactness of the powertrain 1000, and thus achieves a miniaturized design of the powertrain 1000.

[0204] Based on the above concept, referring to FIG. 1 and in combination with other drawings, an embodiment of the present application further provides an electric device, comprising an axial motor 100 or a powertrain 1000. The axial motor 100 and powertrain 1000 in this embodiment are the same as those in the previous embodiment. For details, please refer to the description of the axial motor 100 and powertrain 1000 in the previous embodiment, which will not be repeated here.

[0205] The powertrain 1000 provided in the embodiments of the present application, by employing the axial motor 100 or powertrain 1000 according to the above-described embodiments, can reduce the radial Y dimension of the axial motor 100. This improves the utilization rate of the internal space of the axial motor 100, helps improve the structural compactness of the electric device, and thus achieves a miniaturized design of the electric device.

[0206] As one embodiment of the present application, as shown in Figures 6 to 9, an axial motor 100 includes a rotor 10, a stator 20, a conductive member 110, and a wiring structure 40. Stators 20 are provided on both sides of the rotor 10 in the axial direction Z, and each stator 20 is provided with a conductive member 110. The radial dimension Y of the rotor 10 is smaller than the radial dimension Y of the stator 20. The radial outer side of the rotor 10 and the rotor 10 side of the two stators 20 enclose a receiving space 1001, and at least a portion of the wiring structure 40 is provided within the receiving space 1001. The conductive members 110 of the two stators 20 are both connected to the wiring structure 40.

[0207] As shown in Figures 17 to 19, there is one wiring structure 40. The conductive members 110 of the two stators 20 are connected to the wiring structure 40, so that the two stators 20 are connected in parallel. In addition, the wiring structure 40 is also used to electrically connect to external structures.

[0208] As shown in Figures 12 to 16, there are two wiring structures 40, namely a first wiring structure 40a and a second wiring structure 40b. Each stator 20 is provided with two conductive members 110, namely a first conductive member 110a and a second conductive member 110b. The first conductive members 110a of both stators 20 are connected to the first wiring structure 40a, so that the two stators 20 are connected in series. The second conductive members 110b of both stators 20 are connected to the second wiring structure 40b, which is used to connect to an external structure to achieve electrical connection between the external structure and the stator 20.

[0209] The above are only preferred embodiments of the present application and are 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. An axial motor (100), wherein: include: A rotor (10); The stator (20) and the rotor (10) are sequentially distributed along the axial direction (Z); the radial (Y) dimension of the stator (20) is greater than the radial (Y) dimension of the rotor (10), and the radial (Y) outer side of the rotor (10) and the stator (20) define a receiving space (1001); A wiring structure (40) is connected to the stator (20) and is at least partially located in the accommodating space (1001).

2. The axial electric machine (100) according to claim 1, wherein: The axial motor (100) further comprises a casing (50), and the rotor (10), the stator (20) and the wiring structure (40) are all arranged in the casing (50).

3. The axial electric machine (100) according to claim 2, wherein: A groove (501) is provided on one side of the housing (50) along the radial direction (Y) facing the accommodating space (1001).

4. The axial motor (100) according to claim 2 or 3, wherein: The housing (50) is provided with a wiring hole (502), the wiring hole (502) is opposite to the wiring structure (40), and is used for allowing an external structure to pass through so as to be connected to the wiring structure (40).

5. The axial electric machine (100) according to claim 4, wherein: The axial motor (100) further comprises a first sealing structure (70), wherein the first sealing structure (70) is used to seal the wiring hole (502).

6. The axial electric machine (100) according to claim 5, wherein: The inner peripheral wall of the wiring hole (502) is provided with a groove (501), the groove (501) is provided on a side of the housing (50) facing the wiring structure (40) along a radial direction (Y), and at least a portion of the first sealing structure (70) is provided in the groove (501).

7. The axial electric machine (100) according to claim 5 or 6, wherein: The first sealing structure (70) comprises a first sealing seat (71) arranged on the housing (50), the first sealing seat (71) being provided with an opening (701), the opening (701) being opposite to the wiring structure (40) and corresponding to the wiring hole (502), and being used for allowing an external structure to pass through so as to be connected to the wiring structure (40).

8. The axial electric machine (100) according to claim 7, wherein: The first sealing structure (70) also includes a first sealing ring (72), which is arranged in the opening (701) and is used for allowing the external structure to pass through; the first sealing ring (72) is used to press against the inner wall of the opening (701) and the external structure along the axial direction (Z).

9. The axial electric machine (100) according to claim 7 or 8, wherein: The first sealing structure (70) further comprises a second sealing ring (73), wherein the second sealing ring (73) is arranged outside the first sealing seat (71) and is pressed against the housing (50) and the first sealing seat (71).

10. The axial electric machine (100) according to claim 5 or 6, wherein: The first sealing structure (70) is used to surround the outer periphery of the external structure and press the external structure and the housing (50) along the axial direction (Z) of the axial motor (100).

11. The axial motor (100) according to any one of claims 1 to 10, wherein: The axial motor (100) further comprises a casing (50), the rotor (10), the stator (20) and the wiring structure (40) are all arranged in the casing (50), and the wiring structure (40) is arranged in the casing (50); Alternatively, the axial motor (100) further comprises a housing (60) disposed between the stator (20) and the rotor (10), and the wiring structure (40) is disposed in the housing (60).

12. The axial motor (100) according to any one of claims 1 to 11, wherein: The axial motor (100) further comprises a conductive member (110), wherein the conductive member (110) is connected to the stator (20) and the wiring structure (40).

13. The axial electric machine (100) according to claim 12, wherein: The wiring structure (40) is provided with an insertion hole (401), the conductive member (110) is inserted into the insertion hole (401), and a second sealing structure (80) for sealing the insertion hole (401) is provided between the wiring structure (40) and the conductive member (110).

14. The axial electric machine (100) according to claim 13, wherein: The second sealing structure (80) comprises a second sealing seat (81) sleeved on the outer periphery of the conductive member (110) and a third sealing ring (82) sleeved on the outer periphery of the second sealing seat (81), wherein the third sealing ring (82) presses against the inner peripheral wall of the plug hole (401) and the second sealing seat (81).

15. The axial motor (100) according to any one of claims 1 to 14, wherein: The axial motor (100) further comprises a casing (50), wherein the rotor (10), the stator (20) and the wiring structure (40) are all arranged in the casing (50); The axial motor (100) further comprises a housing (60) disposed between the stator (20) and the rotor (10), the housing (60) being provided with a fourth sealing ring (90) on its outer sleeve, the fourth sealing ring (90) being pressed against the housing (60) and the casing (50) in a radial direction (Y).

16. The axial motor (100) according to any one of claims 1 to 15, wherein: The stators (20) are provided on opposite sides of the rotor (10) along the axial direction (Z), and the radial (Y) outer side of the rotor (10) and the two adjacent stators (20) are enclosed to form the accommodation space (1001).

17. The axial electric machine (100) according to claim 16, wherein: Two adjacent stators (20) are connected to the wiring structure (40) to form a parallel connection, and the wiring structure (40) is used to conduct the stator (20) and an external structure.

18. The axial electric machine (100) according to claim 16, wherein: The wiring structures (40) are provided in plurality, and the plurality of wiring structures (40) include a first wiring structure (40a) and a second wiring structure (40b); two adjacent stators (20) are connected to the first wiring structure (40a) to form a series connection; the two adjacent stators (20) are also connected to the second wiring structure (40b), and the second wiring structure (40b) is used to connect to an external structure to conduct the stator (20) and the external structure.

19. A powertrain (1000), wherein: It comprises an axial motor (100) according to any one of claims 1-18.

20. An electric device, wherein: It comprises an axial motor (100) according to any one of claims 1 to 18; or, it comprises a powertrain (1000) according to claim 19.

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