Hub motor driving wheel suitable for electric motorcycle

Abstract

The utility model discloses a hub motor driving wheel suitable for an electric motorcycle, and magnetic steel sheets are fixed in magnetic steel grooves in an embedded manner, so that the installation reliability of the magnetic steel sheets is greatly improved; the two magnetic steel sheets in each magnetic steel unit are arranged in a V shape, so that the magnetic steel sheets have excellent demagnetization resistance, and the high-speed operation capability and the constant-power operation range of the hub motor are greatly improved; through the combination of liquid cooling and air cooling, the heat dissipation performance of the hub motor is greatly improved, and the hub motor has higher high-speed operation capability.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motorcycle technical field, concretely relates to a hub motor drive wheel suitable for electric motorcycle. BACKGROUND

[0002] Electric motorcycle is by electric drive motorcycle, has energy -conserving environmental protection, is easy to drive, accelerates fast, maintenance cost is low and quiet etc.

[0003] The existing electric motorcycle generally adopts the drive form of hub motor, omits a large number of transmission parts, makes the vehicle structure simpler.

[0004] 1, the magnetic steel sheet of hub motor is attached on the inner peripheral surface of rotor magnetic steel, causes rotor magnetic steel non - working side leakage serious, magnetic steel sheet very easy demagnetization, limit the high -speed operation ability of hub motor and the operating range of constant power.

[0005] 2, the hub motor all adopts the most common air -cooled heat dissipation mode, can only utilize the wind in the process of motorcycle driving to heat dissipation, and does not design any structure of enhancing air -cooled heat dissipation, causes the performance of hub motor to be always limited by its huge heating problem, limit the high -speed operation ability of hub motor.

[0006] The above problems become the urgent matter. CONTENT OF UTILITY MODEL

[0007] To solve the technical problem of insufficient high -speed operation ability of hub motor, the utility model provides a hub motor drive wheel suitable for electric motorcycle.

[0008] Its technical scheme is as follows:

[0009] A wheel hub motor drive wheel suitable for electric motorcycle, comprising a wheel shaft, a wheel hub motor, a wheel hub and a tire synchronously rotatingly sleeved on the wheel hub, the wheel hub motor comprising a stator winding, a rotor, a motor shell and a first end cover and a second end cover oppositely fixedly capped on two sides of the motor shell, the motor shell, the first end cover and the second end cover jointly enclosing an installation space for accommodating the stator winding and the rotor, the wheel hub synchronously rotatingly surrounding an outer periphery of the motor shell, the wheel shaft synchronously rotatingly sleeving a stator support, the stator winding synchronously rotatingly sleeving the stator support, the rotor synchronously rotatingly mounting on an inner peripheral surface of the motor shell and being capable of rotating under the drive of the stator winding, the rotor comprising a rotor core in a cylindrical structure and a plurality of magnetic steel sheets, the rotor core having magnetic steel grooves respectively corresponding to the magnetic steel sheets and in which the magnetic steel sheets are respectively inlaid, and adjacent magnetic steel sheets having different magnetic poles, and each two adjacent magnetic steel sheets constituting a magnetic steel unit, and the two magnetic steel sheets in each magnetic steel unit being arranged in a V shape.

[0010] A first oil seal is installed between the first end cover and the wheel shaft, a second oil seal is installed between the second end cover and the wheel shaft, and the motor installation space is filled with coolant; an air guiding gap is left between the wheel hub and the motor shell, and the wheel hub and the motor shell are connected through a plurality of circumferentially uniformly distributed connecting ribs, and a plurality of circumferentially uniformly distributed spoiler ribs are protruded on the outer peripheral surfaces of the first end cover and the second end cover, and each spoiler rib extends to the air guiding gap adjacent to the corresponding first end cover or second end cover in a radial direction.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1. The rotor core has special magnetic steel grooves, and the magnetic steel sheets are fixed in the magnetic steel grooves in an inlaid manner, which greatly improves the installation reliability of the magnetic steel sheets compared with the traditional mode of being attached to the surface of the rotor core, and the magnetic steel sheets are not damaged, thereby increasing the service life of the wheel hub motor.

[0013] 2. The two magnetic steel sheets in each magnetic steel unit are arranged in a V shape, the angle of the magnetic steel sheets is adjusted, the leakage magnetic field of the non-working area is reduced, the synthetic magnetic field of the magnetic steel is perpendicular to the inner peripheral surface of the rotor core, the magnetic steel sheets have excellent anti-demagnetization capability, and the high-speed running capability and the constant power running range of the wheel hub motor are greatly improved.

[0014] 3. By filling the installation space with coolant, the components and the motor housing, the first end cover and the second end cover in the installation space are cooled simultaneously and efficiently by liquid cooling; by setting an air guide gap between the hub and the motor housing, and by adding turbulence ribs on the first end cover and the second end cover, the turbulence ribs can form a turbulence effect like the rotation of fan blades, and guide the wind to the air guide gap, greatly improving the air cooling effect of the motor housing, the first end cover and the second end cover; the combination of the two greatly improves the heat dissipation performance of the hub motor, and makes the hub motor have stronger high-speed running capability. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Figure 1 is a structural schematic diagram of a hub motor driving wheel suitable for an electric motorcycle;

[0016] Figure 2 Figure 2 is a schematic diagram of the cooperation relationship between the hub motor and the hub;

[0017] Figure 3 Figure 3 is a sectional view of Figure 2 Figure 4 is a structural schematic diagram of the first end cover;

[0018] Figure 4 Figure 5 is a structural schematic diagram of the second end cover;

[0019] Figure 5 Figure 6 is a schematic diagram of the cooperation relationship between the speed measuring driving gear and the speed measuring driven gear;

[0020] Figure 6 Figure 7 is a structural schematic diagram of the rotor core;

[0021] Figure 7 Figure 8 is a structural schematic diagram of the stator support;

[0022] Figure 8 Figure 9 is a principle diagram of the coolant circulation loop. DETAILED DESCRIPTION

[0023] The utility model will be further described below in combination with the embodiments and the drawings.

[0024] As shown in Figures 1-3 Figure 1, a hub motor driving wheel suitable for an electric motorcycle mainly includes a wheel shaft 1, a hub motor, a hub 2a and a tire 12, the hub motor is installed on the wheel shaft 1, the hub 2a is installed on the outer periphery of the hub motor, and the tire 12 is synchronously rotatably sleeved on the hub 2a.

[0025] The wheel hub motor comprises a stator winding 4, a rotor 5, a motor housing 2f, a first end cover 2b and a second end cover 2c which are fixed oppositely on both sides of the motor housing 2f, the motor housing 2f, the first end cover 2b and the second end cover 2c jointly form an installation space for accommodating the stator winding 4 and the rotor 5, the wheel hub 2a is synchronously rotatable around the outer periphery of the motor housing 2f, the stator support 3 is synchronously rotatable on the wheel shaft 1, the stator winding 4 is synchronously rotatable on the stator support 3, and the rotor 5 is synchronously rotatable on the inner periphery of the motor housing 2f and can be rotated under the drive of the stator winding 4.

[0026] Please refer to Figure 5 and Figure 6 The rotor 5 comprises a rotor core 5a in a cylindrical structure and a plurality of magnetic steel sheets 5b, the inside of the rotor core 5a is provided with magnetic steel grooves 5a1 which are adapted to the magnetic steel sheets 5b respectively, each magnetic steel groove 5a1 is a through hole extending along the axial direction of the rotor core 5a, and each magnetic steel sheet 5b is embedded in the corresponding magnetic steel groove 5a1. The magnetic steel sheet 5b is fixed in the magnetic steel groove 5a1 in an embedded manner, compared with the traditional manner of being attached to the surface of the rotor core, the installation reliability of the magnetic steel sheet 5b is greatly improved, the magnetic steel sheet 5b does not need to be damaged, and the service life of the wheel hub motor is increased.

[0027] The magnetic poles of adjacent magnetic steel sheets 5b are different, and each two adjacent magnetic steel sheets 5b form a magnetic steel unit, that is, the magnetic poles of the two magnetic steel sheets 5b in the same magnetic steel unit are different. Most importantly, the two magnetic steel sheets 5b in each magnetic steel unit are arranged in a V shape, by adjusting the angle of the magnetic steel sheet 5b, the leakage magnetic field in the non-working area is reduced, the synthesized magnetic field of the magnetic steel sheet 5b is perpendicular to the inner periphery of the rotor core 5a, the magnetic steel sheet 5b has excellent ability to resist demagnetization, and the high-speed running ability and constant power running range of the wheel hub motor are greatly improved.

[0028] Further, the included angle between the two magnetic steel sheets 5b in the same magnetic steel unit is 110°-130°, which has better leakage magnetic field prevention ability.

[0029] The inner periphery of the core 5a is protruded to form convex hulls 5a2 which correspond to the magnetic steel units respectively, and the adjacent convex hulls 5a2 are recessed to form magnetic isolation grooves 5a3. Through the cooperation of the adjacent convex hulls 5a2 and the magnetic isolation grooves 5a3, the magnetic isolation effect between the adjacent magnetic steel units can be achieved, and a separate magnetic isolation plate is no longer needed, thereby reducing the cost.

[0030] In the embodiment, the rotor core 5a is integrally formed by a powder metallurgy process, not only the structural strength of the rotor core 5a is high, but also the structural and dimensional precision on the rotor core 5a is ensured, thereby further improving the performance of the wheel hub motor.

[0031] Please refer to Figures 1-3The first oil seal 13 is installed between the first end cover 2b and the wheel shaft 1, the second oil seal 14 is installed between the second end cover 2c and the wheel shaft 1, and the installation space is filled with the coolant. Therefore, by filling the installation space with the coolant, the components in the motor installation space and the motor housing 2f, the first end cover 2b and the second end cover 2c can be efficiently cooled at the same time, and the heat dissipation performance of the hub motor is greatly improved.

[0032] Further, the coolant is preferably cooling oil, which can not only efficiently cool the components in the motor installation space, but also lubricate the components in the motor installation space.

[0033] Please refer to Figures 2-4 A lens mounting hole 2d is formed in the first end cover 2b and / or the second end cover 2c, and an observation lens 15 is sealingly installed in the lens mounting hole 2d. By installing the observation lens 15 on the first end cover 2b and / or the second end cover 2c, the coolant in the installation space can be observed very conveniently, and the installation space can be replenished in time, so that the components in the installation space, especially the controller 8 and the coils of the stator winding 4, can be continuously and efficiently cooled.

[0034] Further, a plurality of lens mounting holes 2d are formed in the first end cover 2b and / or the second end cover 2c, which are uniformly distributed in the circumferential direction. By providing a plurality of observation lenses 15, the wheel does not need to be rotated when checking the coolant, and the convenience of checking is improved.

[0035] Please refer to Figure 3 , Figure 5 and Figure 7 The stator support 3 is recessed on one side close to the second end cover 2c to form a first annular groove 3b, and the controller 8 is installed in the first annular groove 3b. The controller 8 is immersed in the cooling oil, which not only ensures the reliable installation of the controller 8, but also avoids interference with the surrounding components, and also ensures efficient heat dissipation of the controller 8.

[0036] The stator support 3 is recessed on one side close to the first end cover 2b to form a second annular groove 3c, and the second annular groove 3c has a plurality of radially extending support reinforcing ribs 3d, which are uniformly distributed in the circumferential direction. This not only realizes lightweight design, but also ensures the structural strength of the stator support 3.

[0037] The second annular groove 3c is integrally formed with a bearing seat 3a at the bottom of the groove, the bearing seat 3a is provided with an axle mounting hole 3a1 which communicates the first annular groove 3b and the second annular groove 3c, and the axle part of the speed measuring driven gear 7 is rotatably installed in the axle mounting hole 3a1, which ensures the installation reliability of the speed measuring driven gear 7.

[0038] The tooth part of the speed measuring driven gear 7 protrudes from the second annular groove 3c, the speed measuring driving gear 6 engaged with the speed measuring driven gear 7 is sleeved on the first end cover 2b in synchronous rotation, the resolver 8a opposite to the shaft mounting hole 3a1 is integrated on the controller 8, so that the rotation speed of the shaft part of the speed measuring driven gear 7 can be detected through the resolver 8a, and the resolver 8a can be a motor encoder. Therefore, the rotation speed of the speed measuring driving gear 6 can be accurately obtained according to the rotation speed of the speed measuring driven gear 7 measured by the resolver 8a, and the rotation speed of the wheel hub motor shell assembly 2 is obtained accurately since the rotation speed of the wheel hub motor shell assembly 2 is the same as that of the speed measuring driving gear 6. Compared with the traditional mode of cooperating a magnetic ring with a Hall sensor, the detection accuracy is greatly improved, the response delay is greatly reduced, and higher use requirements are met. It should be pointed out that since the coolant is preferably cooling oil, the speed measuring driving gear 6 and the speed measuring driven gear 7 can be well lubricated.

[0039] Further, the materials of the speed measuring driving gear 6 and the speed measuring driven gear 7 are nylon, which not only meets the design requirement of light weight, but also is more wear-resistant and has better mute effect compared with metal gears, so that the operation noise of the wheel hub motor can be reduced.

[0040] Please refer to Figure 3 and Figure 5 , the two sides of the motor shell 2f are formed with first flange rings 2f1, the outer edge of the first end cover 2b is formed with second flange rings 2b2 matched with the corresponding first flange rings 2f1, the second flange rings 2b2 are sealingly connected with the corresponding first flange rings 2f1 through a plurality of screws, and the outer edge of the second end cover 2c is formed with third flange rings 2c1 matched with the corresponding first flange rings 2f1, the third flange rings 2c1 are sealingly connected with the corresponding first flange rings 2f1 through a plurality of screws. Through the cooperation of the flange rings, the reliable connection of the motor shell 2f with the first end cover 2b and the second end cover 2c is ensured, and the sealing performance is good, and the liquid leakage problem is not easy to occur.

[0041] Please refer to Figure 2 , the first end cover 2b and the second end cover 2c are rotatably sleeved on the wheel shaft 1 through the first bearing 9, which is simple and reliable. Specifically, the inner side of the first end cover 2b is recessed to form a bearing mounting groove 2b1 matched with the first bearing 9, and the speed measuring driving gear 6 is locked on the first end cover 2b through a plurality of screws, wherein the screws are uniformly distributed in the circumferential direction to ensure the reliable connection of the speed measuring driving gear 6. The inner ring of the speed measuring driving gear 6 is integrally formed with a bearing pressing ring 6a protruding into the bearing mounting groove 2b1, and the bearing pressing ring 6a presses the first bearing 9 in the bearing mounting groove 2b1, thereby ensuring the reliable installation of the first bearing 9.

[0042] Correspondingly, the end surface of the bearing seat 3a is provided with a bearing cover 11 for pressing the second bearing 10 in the shaft mounting hole 3a1 through a screw, which ensures the installation reliability of the second bearing 10.

[0043] In the embodiment, the diameter of the speed measuring driving gear 6 is greater than the diameter of the speed measuring driven gear 7, and the large gear drives the small gear, which reasonably utilizes the installation space and ensures the high precision of measurement.

[0044] In addition, the stator support 3 is integrally formed as a whole, has high structural strength, good stability and long service life.

[0045] Please refer to Figure 8 , the motorcycle frame is provided with a circulating pump 16 and an air-cooled radiator 17, and the installation space, the circulating pump 16 and the air-cooled radiator 17 constitute a coolant circulating loop through pipelines. By setting the coolant circulating loop, the coolant in the installation space can be efficiently cooled, further improving the heat dissipation performance of the hub motor. Among them, since the coolant is preferably cooling oil, the circulating pump 16 is an oil pump.

[0046] Please refer to Figure 1 、 Figure 2 and Figure 5 , the hub 2a and the motor housing 2f are connected through a plurality of circumferentially uniformly distributed connecting ribs 2h, the outer circumferential surface of the first end cover 2b and the second end cover 2c is protruded to form a plurality of circumferentially uniformly distributed turbulence ribs 2e, and each turbulence rib 2e extends along the radial direction of the corresponding first end cover 2b or second end cover 2c to the adjacent air guide gap 2g. By setting the air guide gap 2g between the hub 2a and the motor housing 2f, and cooperating with the turbulence ribs 2e added on the first end cover 2b and the second end cover 2c, the turbulence ribs 2e can form a turbulence effect like the rotation of fan blades, guide the wind to the air guide gap 2g, and greatly improve the air cooling effect of the motor housing 2f, the first end cover 2b and the second end cover 2c.

[0047] In the embodiment, the turbulence rib 2e includes a rib base part 2e1 protruded on the corresponding first end cover 2b or second end cover 2c and a rib protruding part 2e2 protruded on the rib base part 2e1, and the width of the rib protruding part 2e2 is less than the width of the adjacent rib base part 2e1. Through the structure design of wide at the bottom and narrow at the top, the turbulence effect of the turbulence rib 2e can be improved, thereby improving the air cooling effect of the motor housing 2f, the first end cover 2b and the second end cover 2c.

[0048] The fin protrusion 2e2 comprises a protrusion inner section 2e21 and a protrusion outer section 2e22 connected in turn radially outwardly along the corresponding first end cover 2b or second end cover 2c, the width of the protrusion inner section 2e21 gradually increases towards the protrusion outer section 2e22, the width of the protrusion outer section 2e22 gradually decreases away from the protrusion inner section 2e21, and the part of the side wall of the protrusion inner section 2e21 close to the protrusion outer section 2e22 is connected with the part of the side wall of the protrusion outer section 2e22 close to the protrusion inner section 2e21, so that the outer end of the protrusion inner section 2e21 is staggered with the inner end of the protrusion outer section 2e22. Through the above structural design, not only the turbulence effect of the turbulence fin 2e can be improved, thereby improving the air cooling effect on the motor shell 2f, the first end cover 2b and the second end cover 2c, but also the whole turbulence fin 2e is in a lightning structure, which is beautiful and generous.

[0049] The fin base 2e1 comprises a base inner section 2e11 located at the lower part of the protrusion inner section 2e21 and a base outer section 2e12 located at the lower part of the protrusion outer section 2e22, the side of the base inner section 2e11 away from the protrusion outer section 2e22 in the width direction extends to outside the protrusion inner section 2e21, the side close to the protrusion outer section 2e22 in the width direction is flush with the protrusion inner section 2e21, the side of the base outer section 2e12 away from the protrusion inner section 2e21 extends to outside the protrusion outer section 2e22, and the side close to the protrusion inner section 2e21 in the width direction is flush with the protrusion outer section 2e22. Through numerical simulation test, the above structure can further improve the turbulence effect of the turbulence fin 2e.

[0050] Further, the hub 2a, the motor shell 2f and the connecting fin 2h are integrally formed, and have high structural strength, thereby ensuring the connecting strength of the hub 2a and the motor shell 2f. Similarly, the first end cover 2b and the second end cover 2c also adopt the structure design of integral forming, and have high structural strength and long service life.

[0051] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0052] In the utility model, unless another definite provision and limitation, the term " install ", " link ", " connect ", " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electric connection, can be direct connection, also can indirectly connect through intermediate medium, can be two element inside communication.

[0053] In the utility model, unless another definite provision and limitation, first feature is " on " or " under " second feature can include that first and second features directly contact, also can include that first and second features do not directly contact but contact through additional feature between them. Moreover, first feature " on ", " above " and " above " second feature includes that first feature is directly above and obliquely above second feature, or just indicates that first feature horizontal height is higher than second feature. First feature " under ", " below " and " below " second feature includes that first feature is directly below and obliquely below second feature, or just indicates that first feature horizontal height is less than second feature.

[0054] Finally, it needs to be explained that the above description is only the preferred embodiment of the utility model, and the ordinary skilled person in the art can make various similar expressions under the inspiration of the utility model without violating the purpose and claims of the utility model, and such changes fall within the protection scope of the utility model.

Claims

1. A wheel hub motor drive wheel suitable for electric motorcycles, comprising a wheel shaft (1), a wheel hub motor, a wheel hub (2a) and a tire (12) which is synchronously rotatably sleeved on the wheel hub (2a), the wheel hub motor comprising a stator winding (4), a rotor (5), a motor housing (2f) and a first end cover (2b) and a second end cover (2c) which are oppositely fixedly capped on both sides of the motor housing (2f), the motor housing (2f), the first end cover (2b) and the second end cover (2c) jointly forming a mounting space for accommodating the stator winding (4) and the rotor (5), and the wheel hub (2a) is synchronously rotatably wrapped around the outer periphery of the motor housing (2f), characterized in that: The stator support (3) is synchronously sleeved on the wheel shaft (1), the stator winding (4) is synchronously sleeved on the stator support (3), the rotor (5) is synchronously installed on the inner circumferential surface of the motor housing (2f) and can rotate under the driving of the stator winding (4), the rotor (5) comprises a rotor core (5a) in a cylindrical structure and a plurality of magnetic steel sheets (5b), the inside of the rotor core (5a) is provided with magnetic steel grooves (5a1) corresponding to the magnetic steel sheets (5b) respectively, each magnetic steel sheet (5b) is embedded in the corresponding magnetic steel groove (5a1), and the magnetic poles of adjacent magnetic steel sheets (5b) are different, and each two adjacent magnetic steel sheets (5b) form a magnetic steel unit, and the two magnetic steel sheets (5b) in each magnetic steel unit are arranged in a V shape. The first oil seal (13) is installed between the first end cover (2b) and the wheel shaft (1), the second oil seal (14) is installed between the second end cover (2c) and the wheel shaft (1), and the installation space is filled with coolant; the hub (2a) and the motor housing (2f) are connected through a plurality of circumferentially uniformly distributed connecting ribs (2h), and the hub (2a) and the motor housing (2f) are connected through a plurality of circumferentially uniformly distributed connecting ribs (2h), the outer circumferential surface of the first end cover (2b) and the second end cover (2c) is protruded to form a plurality of circumferentially uniformly distributed spoiler ribs (2e), each spoiler rib (2e) extends along the radial direction of the corresponding first end cover (2b) or second end cover (2c) to the adjacent air gap (2g).

2. The wheel hub motor drive wheel suitable for use in an electric motorcycle according to claim 1, characterized in that: The inner circumferential surface of the rotor core (5a) is protruded to form a convex hull (5a2) corresponding to each magnetic steel unit, and the adjacent convex hulls (5a2) are recessed to form a magnetic separation groove (5a3).

3. The wheel hub motor drive wheel suitable for use in an electric motorcycle according to claim 1 or 2, characterized in that: The rotor core (5a) is integrally formed by powder metallurgy process.

4. The in-wheel motor drive wheel suitable for an electric motorcycle according to claim 1, characterized by: The side of the stator support (3) close to the second end cover (2c) is recessed to form a first annular groove (3b), and the controller (8) is installed in the first annular groove (3b), and the controller (8) is immersed in the coolant.

5. The wheel hub motor drive wheel suitable for use in an electric motorcycle according to claim 4, characterized in that: The side of the stator support (3) close to the first end cover (2b) is recessed to form a second annular groove (3c), the bottom of the second annular groove (3c) is integrally formed with a bearing seat (3a), the bearing seat (3a) is provided with an axle mounting hole (3a1) communicating with the first annular groove (3b) and the second annular groove (3c), the axle part of the speed measuring driven gear (7) is rotatably installed in the axle mounting hole (3a1), the tooth part of the speed measuring driven gear (7) protrudes from the second annular groove (3c), the first end cover (2b) is synchronously sleeved with the speed measuring driving gear (6) engaged with the speed measuring driven gear (7), and the resolver (8a) opposite to the axle mounting hole (3a1) is integrated on the controller (8), so that the rotational speed of the axle part of the speed measuring driven gear (7) can be detected through the resolver (8a).

6. The in-wheel motor drive wheel suitable for an electric motorcycle according to claim 1, characterized by: The coolant is cooling oil.

7. The in-wheel motor drive wheel suitable for an electric motorcycle according to claim 1, characterized by: A plurality of lens mounting holes (2d) are formed on the first end cover (2b) and / or the second end cover (2c) in a circumferential direction, and each lens mounting hole (2d) is sealingly mounted with an observation lens (15).

8. The in-wheel motor drive wheel suitable for an electric motorcycle according to claim 1, characterized by: First flange rings (2f1) are formed on both sides of the motor housing (2f), and the outer edge of the first end cover (2b) is formed with second flange rings (2b2) matched with the corresponding first flange rings (2f1), which are sealingly connected with the corresponding first flange rings (2f1) by a plurality of screws, and the outer edge of the second end cover (2c) is formed with third flange rings (2c1) matched with the corresponding first flange rings (2f1), which are sealingly connected with the corresponding first flange rings (2f1) by a plurality of screws.

9. The in-wheel motor drive wheel suitable for an electric motorcycle according to claim 1, characterized by: The spoiler rib (2e) includes a rib base portion (2e1) protruding on the corresponding first end cover (2b) or second end cover (2c) and a rib protruding portion (2e2) protruding on the rib base portion (2e1), the rib protruding portion (2e2) includes a protruding portion inner segment (2e21) and a protruding portion outer segment (2e22) connected in sequence radially outward of the corresponding first end cover (2b) or second end cover (2c), the width of the protruding portion inner segment (2e21) gradually increases towards the protruding portion outer segment (2e22), the width of the protruding portion outer segment (2e22) gradually decreases away from the protruding portion inner segment (2e21), and the part of the side wall of the protruding portion inner segment (2e21) close to the protruding portion outer segment (2e22) is connected with the part of the side wall of the protruding portion outer segment (2e22) close to the protruding portion inner segment (2e21), so that the outer end of the protruding portion inner segment (2e21) is staggered with the inner end of the protruding portion outer segment (2e22).

10. The in-wheel motor drive wheel suitable for an electric motorcycle according to claim 1, characterized by: The hub (2a), the motor housing (2f) and each connecting rib (2h) are integrally formed.

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