An axial flux permanent magnet motor

Abstract

This utility model discloses an axial flux permanent magnet motor, relating to the field of permanent magnet motor technology. It includes a lead-out end cover assembly, a disc brake end cover assembly, a stator assembly, a motor shaft assembly, lead wires, signal wires, a hub, and end cover fixing screws. The lead-out end cover assembly, disc brake end cover assembly, motor shaft assembly, and hub constitute the external structural components of the motor. The surface of the lead-out end cover assembly is provided with several end cover fixing screws, which fix the external structural components of the motor. In this utility model, the magnets are arranged in a cross-directional N-S pattern. Magnets N and S are bonded to the magnet backplate using magnetic adhesive. The main function of the magnet pressure plate is to lock magnets N and S. Even if the magnetic adhesive fails under high speed and high temperature conditions, the magnet pressure plate can still lock magnets N and S, preventing magnet detachment. The lead-out end cover is connected to the magnet backplate via backplate fixing screws.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet motor technology, specifically to an axial flux permanent magnet motor. Background Technology

[0002] As a core component of the drive system, the electric motor in an electric vehicle directly affects the vehicle's energy efficiency, range, power performance, and cost. Its technological development and innovation are directly related to the competitiveness of new energy vehicles. Currently, there are three main types of electric vehicle motors: permanent magnet synchronous motors (PMSM), which use permanent magnets to generate a magnetic field and achieve efficient drive through synchronous rotation; AC asynchronous motors (ACIM), which generate a rotating magnetic field through induced current in the stator windings to drive the rotor; and flat wire motors, which use rectangular flat wire windings to improve slot fill factor.

[0003] The core characteristic of axial flux permanent magnet motors is that the magnetic circuit flows along the axial direction of the motor, unlike the circumferential magnetic circuit of traditional radial flux motors. Stator and rotor layout: The stator adopts a flat plate structure with embedded concentrated or distributed windings, and the magnetic poles are arranged axially. The rotor permanent magnets are magnetized axially, typically using a Halbach array to optimize the magnetic flux density. Magnetic circuit design: The magnetic flux path is "stator → air gap → rotor → air gap → stator", forming a double air gap structure.

[0004] Currently, axial flux permanent magnet motors in the industry suffer from problems such as low torque and low power density, which are common in radial motors. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an axial flux permanent magnet motor to solve the problems of low torque and low power density of axial flux permanent magnet motors commonly used in the industry during actual use.

[0006] To achieve the above objectives, this utility model employs the following technical solution: An axial flux permanent magnet motor is disclosed for use in a two-wheeled electric vehicle. The motor includes a lead-out end cap assembly, a disc brake end cap assembly, a stator assembly, a motor shaft assembly, lead wires, signal wires, a wheel hub, and end cap fixing screws. The lead-out end cap assembly, disc brake end cap assembly, motor shaft assembly, and wheel hub constitute the external structural components of the motor. The surface of the lead-out end cap assembly is provided with several end cap fixing screws, which secure the external structural components of the motor. The lead-out end cap assembly is fixed to the inner ring of the wheel hub. Lead wires and signal wires are arranged outwards from the center of the lead-out end cap assembly. The stator assembly is press-fitted onto the motor shaft assembly. The motor shaft assembly is connected to the rear swingarm of the vehicle and fixed to the rear swingarm. One end of the motor shaft assembly is connected to the wheel hub and fitted with a tire for movement.

[0007] As a preferred embodiment of this utility model, the cable outlet end cover assembly includes a cable outlet end cover, a cable outlet bearing, a magnet back plate, a magnet partition, magnet N, magnet S, a magnet pressure plate, back plate fixing screws, and pressure plate fixing screws. The cable outlet end cover is located on the outermost side of the cable outlet end cover assembly. The cable outlet bearing is located in the middle of the cable outlet end cover and is mounted on the surface of the motor shaft assembly. A magnet back plate is mounted on the inner side of the cable outlet end cover, a magnet partition is mounted on the inner side of the magnet back plate, magnet N and magnet S are mounted on the inner side of the magnet partition, and a magnet pressure plate is mounted on the surfaces of magnet N and magnet S. A back plate fixing screw is used to connect the cable outlet end cover and the magnet back plate. A plurality of pressure plate fixing screws are mounted on the surface of the magnet pressure plate.

[0008] In a preferred embodiment of this invention, magnets N and S are bonded to the magnet back plate using magnetic adhesive.

[0009] The magnetic steel partition plate mainly serves to evenly space the magnets, allowing magnets N and S to be evenly distributed radially on the magnetic steel back plate and fixed in a designated position axially, with the magnets arranged in a crisscrossing pattern in the N and N directions. Magnets N and S are bonded to the magnetic steel back plate with magnetic steel adhesive. The main function of the magnetic steel pressure plate is to lock magnets N and S in place. Even if the magnetic steel adhesive fails under high speed and high temperature conditions, the magnetic steel pressure plate can still lock magnets N and S, preventing the magnets from falling off.

[0010] As a preferred embodiment of this utility model, the disc brake end cap assembly includes: a disc brake end cap and a disc brake end bearing. The disc brake end cap and the cable exit end cap have the same structure, and the disc brake end bearing and the cable exit bearing have the same structure. The functions of the related parts are the same as those of the cable exit end cap assembly.

[0011] As a preferred technical solution of this utility model, the motor shaft assembly includes a cable outlet seat and a motor shaft. The cable outlet seat is pressed onto the motor shaft and is connected to the cable outlet end cover and the disc brake end cover respectively through the cable outlet end bearing and the disc brake end bearing.

[0012] As a preferred technical solution of this utility model, the surface of the cable outlet is provided with a cable outlet hole, and the lead wire and signal wire respectively pass through the cable outlet hole on the cable outlet to enter the motor.

[0013] As a preferred embodiment of this utility model, injection molding heads are provided on the outer surfaces of the lead wire and the signal wire to provide waterproofing.

[0014] As a preferred technical solution of this utility model, the stator assembly includes a winding coil, an iron core support, insulating paper, an iron core, Hall effect sensors, Hall effect insulating paper, and support fixing screws. The iron core and the iron core support are integrated, and there are two sets of iron core supports, one set on each side. The teeth of the iron core support are engaged in the inner ring of the iron core, providing radial support and preventing relative rotation of the iron core in the radial direction. The left and right iron core supports are locked axially by the support fixing screws, thus integrating the iron core and the iron core support into one unit. The winding coil is slotted insulated vertically by insulating plates. The Hall effect insulating paper is wrapped around the teeth of the iron core, providing slot insulation for the left and right sides of the winding coil. Three Hall effect sensors are used per motor, placed inside the insulating paper on the surface of the iron core, with electrical angles of 60° or 120° between them. They mainly provide electrical signals to indicate the position of the magnets, and the signals are transmitted to the controller outside the motor via signal lines.

[0015] In a preferred embodiment of this invention, each tooth on the iron core support has a coil as one coil, and every three coils form a group. This group of coils is defined as U, V, or W. One U group coil plus one V group coil plus one W group coil constitutes a unit motor winding. The winding coils of each motor consist of 1, 2, 3, 5, 6, 8, 10, or 12 unit motor windings. The unit motor windings are connected in parallel, in series, or in a mixed series-parallel connection; they are connected to an external controller of the motor via lead wires.

[0016] The main function of this utility model is to evenly space magnets N and S, ensuring that magnets N and S are radially evenly distributed on the magnet back plate and axially fixed at a designated position, with the magnets arranged in a crisscrossing N and S directions. Magnets N and S are bonded to the magnet back plate with magnetic adhesive. The main function of the magnetic pressure plate is to lock magnets N and S in place. Even if the magnetic adhesive fails under high speed and high temperature conditions, the magnetic pressure plate can still lock magnets N and S, preventing them from falling off. The end cap of the cable outlet is connected to the magnet back plate via back plate fixing screws.

[0017] The cable outlet is pressed onto the motor shaft and connected to the cable outlet end cover and disc brake end cover respectively through the cable outlet bearing and disc brake end bearing. The lead wire and signal wire pass through the cable outlet hole on the cable outlet and enter the motor. The outer surface of the lead wire and signal wire has an injection molded head, which serves as a waterproof function.

[0018] The teeth of the iron core support are engaged in the inner ring of the iron core, providing radial support and preventing relative rotation of the iron core in the radial direction. Axially, the left and right iron core supports are locked together by the support fixing screws, thus integrating the iron core and the iron core support into one unit. The winding coil is slotted insulated vertically by insulating plates, and insulating paper is wrapped around the teeth of the iron core to provide slot insulation for the left and right sides of the winding coil. Three Hall effect sensors are used per motor, placed inside the insulating paper on the surface of the iron core, with electrical angles of 60° or 120° between them. They mainly provide electrical signals indicating the positions of magnets N and S, and the signals are transmitted to the controller outside the motor through signal lines.

[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0020] Figure 1 This is a front cross-sectional view of the axial flux permanent magnet motor of this utility model. Figure 2 This is an exploded structural diagram of the cable outlet end cap assembly of this utility model; Figure 3 This is an exploded structural diagram of the disc brake end cap assembly of this utility model; Figure 4 This is an exploded structural diagram of the stator component of this utility model; Figure 5 This is a three-dimensional structural diagram of the motor shaft assembly of this utility model; In the diagram: Outlet end cover assembly 1, Outlet end cover 1-1, Outlet end bearing 1-2, Magnet back plate 1-3, Magnet partition 1-4, Magnet N1-5, Magnet S1-6, Magnet pressure plate 1-7, Back plate fixing screw 1-8 and Pressure plate fixing screw 1-9, Disc brake end cover assembly 2, Disc brake end cover 2-1, Disc brake end bearing 2-2, Stator assembly 3, Winding coil 3-1, Iron core bracket 3-2, Insulating paper 3-3, Iron core 3-4, Hall effect sensor 3-5, Hall effect sensor insulating paper 3-6, Bracket fixing screw 3-7, Motor shaft assembly 4, Outlet connector 4-1, Motor shaft 4-2, Lead wire 5, Signal wire 6, Hub 7 and End cover fixing screw 8. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable. Example

[0026] Please see Figure 1-5 The present invention provides a technical solution as follows: An axial flux permanent magnet motor is disclosed for use in a two-wheeled electric vehicle. The motor includes a cable end cap assembly 1, a disc brake end cap assembly 2, a stator assembly 3, a motor shaft assembly 4, lead wires 5, signal wires 6, a wheel hub 7, and end cap fixing screws 8. The cable end cap assembly 1, disc brake end cap assembly 2, motor shaft assembly 4, and wheel hub 7 constitute the external structural components of the motor. Several end cap fixing screws 8 are provided on the surface of the cable end cap assembly 1, and the external structural components of the motor are fixed by these screws. The cable end cap assembly 1 is fixed to the inner ring of the wheel hub 7. Lead wires 5 and signal wires 6 are arranged outwards from the center of the cable end cap assembly 1. The stator assembly 3 is press-fitted onto the motor shaft assembly 4, which is connected to the rear swingarm of the vehicle and fixed to the rear swingarm. One end of the motor shaft assembly 4 is fitted with a tire on the wheel hub 7 for propulsion.

[0027] The cable outlet end cover assembly 1 includes a cable outlet end cover 1-1, a cable outlet bearing 1-2, a magnet back plate 1-3, a magnet partition 1-4, magnet N1-5, magnet N1-6, a magnet pressure plate 1-7, a back plate fixing screw 1-8, and a pressure plate fixing screw 1-9. The cable outlet end cover 1-1 is located on the outermost side of the cable outlet end cover assembly 1. The cable outlet bearing 1-2 is located in the middle of the cable outlet end cover 1-1. The cable outlet bearing 1-2 is mounted on the surface of the motor shaft assembly 4. A magnet backplate 1-3 is installed on the inner side of the end cap 1-1. A magnet partition 1-4 is installed on the inner side of the magnet backplate 1-3. Magnets N1-5 and N1-6 are installed on the inner side of the magnet partition 1-4. Magnet pressure plates 1-7 are installed on the surfaces of magnets N1-5 and N1-6. A backplate fixing screw 1-8 is provided between the end cap 1-1 and the magnet backplate 1-3 for connection. Several pressure plate fixing screws 1-9 are installed on the surface of the magnet pressure plate 1-7.

[0028] Magnets N1-5 and N1-6 are bonded to the back plate 1-3 using magnetic adhesive.

[0029] The main function of the magnetic steel partition plate 1-4 is to evenly space the magnets, so that magnets N1-5 and N1-6 are evenly distributed radially on the magnetic steel back plate 1-3 and fixed in a designated position axially. The magnets N1-5 and N1-6 are arranged in a cross direction in the N-S direction. Magnets N1-5 and N1-6 are bonded to the magnetic steel back plate 1-3 with magnetic steel adhesive. The main function of the magnetic steel pressure plate 1-7 is to lock magnets N1-5 and N1-6. Even if the magnetic steel adhesive fails under high speed and high temperature conditions, the magnetic steel pressure plate 1-7 can still lock magnets N1-5 and N1-6, which can prevent the magnets from falling off.

[0030] Specifically, in this embodiment, the magnetic steel partition of this utility model mainly serves to evenly space the magnets, allowing the magnets to be evenly distributed radially on the magnetic steel back plate and fixed in a designated position axially, with the magnets arranged in a crisscross pattern in the N-S direction; the magnets are bonded to the magnetic steel back plate with magnetic steel adhesive, and the main function of the magnetic steel pressure plate is to lock the magnets. Even if the magnetic steel adhesive fails under high speed and high temperature conditions, the magnetic steel pressure plate can still lock the magnets, preventing the magnets from falling off; the end cap of the cable outlet is connected to the magnetic steel back plate by back plate fixing screws.

[0031] The disc brake end cap assembly 2 includes: a disc brake end cap 2-1 and a disc brake end bearing 2-2. The disc brake end cap 2-1 and the cable outlet end cap 1-1 have the same structure, and the disc brake end bearing 2-2 and the cable outlet bearing 1-2 have the same structure. The functions of the related parts are the same as those of the cable outlet end cap assembly.

[0032] The motor shaft assembly 4 includes a cable outlet 4-1 and a motor shaft 4-2. The cable outlet 4-1 is pressed onto the motor shaft 4-2 and is connected to the cable outlet end cover 1-1 and the disc brake end cover 2-1 respectively through the cable outlet end bearing 1-2 and the disc brake end bearing 2-2.

[0033] The surface of the cable outlet 4-1 has a cable outlet hole, through which the lead wire 5 and the signal wire 6 pass into the motor.

[0034] The outer surfaces of lead wire 5 and signal wire 6 are each equipped with injection molding heads to provide waterproofing.

[0035] Specifically, in this embodiment, the lead wire holder is pressed against the motor shaft and connected to the lead wire end cover and the disc brake end cover respectively through the lead wire end bearing and the disc brake end bearing. The lead wire and the signal wire pass through the lead wire hole on the lead wire holder and enter the motor. The outer surface of the lead wire and the signal wire has an injection head, which serves as a waterproof function.

[0036] Example 2

[0037] Please see Figure 1-5 This is another technical solution provided by the present invention. This embodiment has the same features as the above embodiment 1, and the similarities will not be described in this embodiment. The specific differences are as follows: An axial flux permanent magnet motor is disclosed for use in a two-wheeled electric vehicle. The motor includes a cable end cap assembly 1, a disc brake end cap assembly 2, a stator assembly 3, a motor shaft assembly 4, lead wires 5, signal wires 6, a wheel hub 7, and end cap fixing screws 8. The cable end cap assembly 1, disc brake end cap assembly 2, motor shaft assembly 4, and wheel hub 7 constitute the external structural components of the motor. Several end cap fixing screws 8 are provided on the surface of the cable end cap assembly 1, and the external structural components of the motor are fixed by these screws. The cable end cap assembly 1 is fixed to the inner ring of the wheel hub 7. Lead wires 5 and signal wires 6 are arranged outwards from the center of the cable end cap assembly 1. The stator assembly 3 is press-fitted onto the motor shaft assembly 4, which is connected to the rear swingarm of the vehicle and fixed to the rear swingarm. One end of the motor shaft assembly 4 is fitted with a tire on the wheel hub 7 for propulsion.

[0038] The cable outlet end cover assembly 1 includes a cable outlet end cover 1-1, a cable outlet bearing 1-2, a magnet back plate 1-3, a magnet partition 1-4, magnet N1-5, magnet N1-6, a magnet pressure plate 1-7, a back plate fixing screw 1-8, and a pressure plate fixing screw 1-9. The cable outlet end cover 1-1 is located on the outermost side of the cable outlet end cover assembly 1. The cable outlet bearing 1-2 is located in the middle of the cable outlet end cover 1-1. The cable outlet bearing 1-2 is mounted on the surface of the motor shaft assembly 4. A magnet backplate 1-3 is installed on the inner side of the end cap 1-1. A magnet partition 1-4 is installed on the inner side of the magnet backplate 1-3. Magnets N1-5 and N1-6 are installed on the inner side of the magnet partition 1-4. Magnet pressure plates 1-7 are installed on the surfaces of magnets N1-5 and N1-6. A backplate fixing screw 1-8 is provided between the end cap 1-1 and the magnet backplate 1-3 for connection. Several pressure plate fixing screws 1-9 are installed on the surface of the magnet pressure plate 1-7.

[0039] Magnets N1-5 and N1-6 are bonded to the back plate 1-3 using magnetic adhesive.

[0040] The main function of the magnetic steel partition plate 1-4 is to evenly space the magnets, so that magnets N1-5 and N1-6 are evenly distributed radially on the magnetic steel back plate 1-3 and fixed in a designated position axially. The magnets N1-5 and N1-6 are arranged in a cross direction in the N-S direction. Magnets N1-5 and N1-6 are bonded to the magnetic steel back plate 1-3 with magnetic steel adhesive. The main function of the magnetic steel pressure plate 1-7 is to lock magnets N1-5 and N1-6. Even if the magnetic steel adhesive fails under high speed and high temperature conditions, the magnetic steel pressure plate 1-7 can still lock magnets N1-5 and N1-6, which can prevent the magnets from falling off.

[0041] Specifically, in this embodiment, the magnetic steel partition of this utility model mainly serves to evenly space the magnets, allowing the magnets to be evenly distributed radially on the magnetic steel back plate and fixed in a designated position axially, with the magnets arranged in a crisscross pattern in the N-S direction; the magnets are bonded to the magnetic steel back plate with magnetic steel adhesive, and the main function of the magnetic steel pressure plate is to lock the magnets. Even if the magnetic steel adhesive fails under high speed and high temperature conditions, the magnetic steel pressure plate can still lock the magnets, preventing the magnets from falling off; the end cap of the cable outlet is connected to the magnetic steel back plate by back plate fixing screws.

[0042] Stator component 3 includes winding coil 3-1, core support 3-2, insulating paper 3-3, core 3-4, Hall effect sensor 3-5, Hall effect insulating paper 3-6, and support fixing screw 3-7. The core 3-4 and core support 3-2 are integrated. There are two sets of core support 3-2, one on each side of the core support 3-2. Figure 4 As shown, the teeth of the iron core bracket 3-2 are engaged in the inner ring of the iron core 3-4, providing radial support for the iron core 3-4 and preventing relative rotation of the iron core in the radial direction. The left and right iron core brackets 3-2 are locked in the axial direction by the bracket fixing screws 3-7, thus integrating the iron core 3-4 and the iron core bracket 3-2 into one unit. The winding coil 3-1 is insulated from the top and bottom by the slots in the vertical direction by the insulating plate. The Hall insulating paper 3-6 is wrapped around the teeth of the iron core 3-4, providing slot insulation for the left and right sides of the winding coil 3-1. Three Hall 3-5s are used for each motor and are placed in designated positions. The Hall insulating paper 3-6 on the surface of the iron core 3-4 is distributed at electrical angles of 60° or 120° to each other, mainly providing electrical signals to indicate the position of the magnet. The signals are transmitted to the controller outside the motor through the signal line 6.

[0043] On the iron core support 3-2, each tooth has a coil, and every three coils form a group. This group of coils is defined as U, V, or W. One U group coil plus one V group coil plus one W group coil constitutes a unit motor winding. The winding coil 3-1 of each motor consists of 1, 2, 3, 5, 6, 8, 10, or 12 unit motor windings. The unit motor windings are connected in parallel, in series, or in a mixed series-parallel connection; they are connected to the external controller of the motor through lead wire 5.

[0044] Specifically, in this embodiment, the teeth of the iron core bracket are engaged in the inner ring of the iron core, providing radial support and preventing relative radial rotation of the iron core. Axially, the left and right iron core brackets are locked in place by bracket fixing screws, thus integrating the iron core and the iron core brackets into one unit. The winding coil is slot-insulated vertically by insulating plates, and insulating paper is wrapped around the teeth of the iron core to provide slot insulation for the left and right sides of the winding coil. Three Hall effect sensors are used per motor, placed in designated positions at electrical angles of 60° or 120° to each other. These sensors primarily provide electrical signals indicating the position of the magnets, and these signals are transmitted to an external controller via signal lines.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An axial flux permanent magnet electric machine, characterized by, This axial flux permanent magnet motor is used in two-wheeled electric vehicles. The motor includes a lead-out end cover assembly (1), a disc brake end cover assembly (2), a stator assembly (3), a motor shaft assembly (4), lead wires (5), signal wires (6), a wheel hub (7), and end cover fixing screws (8). The lead-out end cover assembly (1), disc brake end cover assembly (2), motor shaft assembly (4), and wheel hub (7) constitute the external structural components of the motor. The surface of the lead-out end cover assembly (1) is provided with several end cover fixing screws (8). The external structural components of the motor are fixed by several end cap fixing screws (8). The cable outlet end cap assembly (1) is fixed to the inner ring of the wheel hub (7). The cable outlet end cap assembly (1) has a lead wire (5) and a signal wire (6) arranged outward from the middle. The stator assembly (3) is press-fitted onto the motor shaft assembly (4). The motor shaft assembly (4) is connected to the rear horizontal fork of the vehicle. The motor shaft assembly (4) is fixed on the rear horizontal fork. One end of the motor shaft assembly (4) is fitted with a tire on the wheel hub (7) for walking.

2. An axial flux permanent magnet electric machine according to claim 1, characterized in that: The cable outlet end cover assembly (1) includes a cable outlet end cover (1-1), a cable outlet bearing (1-2), a magnet back plate (1-3), a magnet partition (1-4), magnet N (1-5), magnet S (1-6), a magnet pressure plate (1-7), a back plate fixing screw (1-8), and a pressure plate fixing screw (1-9). The cable outlet end cover (1-1) is located on the outermost side of the cable outlet end cover assembly (1). A cable outlet bearing (1-2) is located in the middle of the cable outlet end cover (1-1). The cable outlet bearing (1-2) is mounted on the surface of the motor shaft assembly (4). A magnet backplate (1-3) is installed on the inner side of the end cap (1-1). A magnet partition (1-4) is installed on the inner side of the magnet backplate (1-3). Magnets N (1-5) and S (1-6) are installed on the inner side of the magnet partition (1-4). Magnet pressure plates (1-7) are installed on the surfaces of magnets N (1-5) and S (1-6). A backplate fixing screw (1-8) is provided between the end cap (1-1) and the magnet backplate (1-3) for connection. Several pressure plate fixing screws (1-9) are installed on the surface of the magnet pressure plate (1-7).

3. An axial flux permanent magnet electric machine as claimed in claim 2, characterized in that: The magnets N (1-5) and S (1-6) are bonded to the magnet back plate (1-3) with magnet adhesive.

4. An axial flux permanent magnet electric machine as claimed in claim 2, characterized in that: The disc brake end cap assembly (2) includes: disc brake end cap (2-1) and disc brake end bearing (2-2). The disc brake end cap (2-1) and the cable outlet end cap (1-1) have the same structure, and the disc brake end bearing (2-2) and the cable outlet bearing (1-2) have the same structure.

5. An axial flux permanent magnet electric machine as claimed in claim 4, characterized in that: The motor shaft assembly (4) includes a cable outlet (4-1) and a motor shaft (4-2). The cable outlet (4-1) is pressed onto the motor shaft (4-2) and is connected to the cable outlet end cap (1-1) and the disc brake end cap (2-1) respectively through the cable outlet end bearing (1-2) and the disc brake end bearing (2-2).

6. An axial flux permanent magnet electric machine as claimed in claim 5, characterized in that: The surface of the outlet seat (4-1) is provided with outlet holes, and the lead wire (5) and signal wire (6) pass through the outlet holes on the outlet seat (4-1) and enter the motor.

7. An axial flux permanent magnet electric machine as claimed in claim 6, characterized in that: An injection head is provided on the outer surface of the lead wire (5) and the outer surface of the signal wire (6).

8. An axial flux permanent magnet motor according to claim 7, characterized in that: The stator component (3) includes a winding coil (3-1), a core support (3-2), insulating paper (3-3), an iron core (3-4), a Hall effect sensor (3-5), Hall effect insulating paper (3-6), and a support fixing screw (3-7). The iron core (3-4) and the core support (3-2) are integrated. There are two sets of core supports (3-2), one on each side. The teeth of the core supports (3-2) engage with the inner ring of the iron core (3-4), providing radial support for the iron core (3-4). To prevent relative rotation of the iron core in the radial direction, the upper and lower parts of the winding coil (3-1) are slotted insulated by insulating plates in the vertical direction. Hall insulating paper (3-6) is wrapped around the teeth of the iron core (3-4) to provide slot insulation for the left and right sides of the winding coil (3-1). Three Hall (3-5) sensors are used for each motor and are placed inside the Hall insulating paper (3-6) on the surface of the iron core (3-4). They are distributed at electrical angles of 60° or 120° to each other and mainly provide electrical signals to feed back the position of the magnet. The signals are transmitted to the controller outside the motor through the signal line (6).

9. An axial flux permanent magnet motor according to claim 8, characterized in that: The coil on each tooth of the iron core support (3-2) is one coil, and every three coils form a group. The group of coils is defined as U, V or W. One U group coil plus one V group coil plus one W group coil constitutes a unit motor winding. The winding coil (3-1) of each motor consists of 1, 2, 3, 5, 6, 8, 10 or 12 unit motor windings.

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