Intelligent electric wheel and vehicle

Abstract

The invention provides an intelligent electric wheel and a vehicle. The intelligent electric wheel comprises a wheel assembly, a left shell assembly and a right shell assembly, the left shell assembly and the right shell assembly are arranged on the inner side of the wheel assembly, and the left shell assembly is fixedly connected with the right shell assembly; the motor rotor shaft assembly sequentially penetrates through the right shell assembly and the left shell assembly and is fixedly connected with the wheel assembly. The six-component sensor and the load sensing circuit board are arranged to detect required load parameters, electric signals obtained by the six-component sensor are preprocessed, and then the signals are transmitted to the VCU through the signal interface and the low-voltage wire harness, so that the VCU can obtain wheel load data in real time; in the working mode, the VCU not only monitors the running states of the vehicle under various working conditions in real time, but also can realize perception and pre-judgment of potential risks through control algorithms such as big data and machine learning, so that the intelligent degree of the vehicle is improved, and the vehicle runs more safely and stably.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles and intelligent vehicles, and in particular to intelligent electric wheels and vehicles. Background Art

[0002] In recent years, axial flux motor technology has developed rapidly. Compared with traditional radial flux motors, axial flux motors have a compact axial length and higher torque density and power density, making them very suitable as vehicle hub motors. Using axial flux motors as hub motors and integrating them into an electric wheel system is an ideal electric drive system. For vehicles equipped with such electric wheels, the driving state of each wheel can be independently controlled, which can achieve agile response and rapid implementation of the execution unit, thereby supporting the vehicle to achieve more sophisticated and intelligent control.

[0003] However, this type of electric wheel vehicle cannot obtain wheel load data in real time, resulting in the VCU being unable to monitor the vehicle's operating status under various working conditions in real time. Summary of the invention

[0004] Based on this, an object of the present invention is to provide an intelligent electric wheel and a vehicle.

[0005] The invention provides the following technical solutions: an intelligent electric wheel, comprising a wheel assembly, a left housing assembly and a right housing assembly arranged inside the wheel assembly, wherein the left housing assembly is fixedly connected to the right housing assembly; and a motor rotor shaft assembly which sequentially penetrates the right housing assembly and the left housing assembly and is fixedly connected to the wheel assembly; The motor rotor shaft assembly includes a six-component sensor fixedly connected to the wheel assembly, the six-component sensor is used to read the data of six components in the smart electric wheel coordinate system, the motor rotor shaft assembly also includes a transmission assembly fixedly connected to the six-component sensor, a motor rotor disk arranged on the transmission assembly, and a plurality of magnetic parts arranged on the motor rotor disk; The left housing assembly includes a left housing, a left housing stator winding arranged on the left housing, and a load sensing component arranged on the left housing; the right housing assembly includes a right housing and a right housing stator winding arranged on the right housing; magnetic force is generated under the action of current in the left housing stator winding and the right housing stator winding to drive the motor rotor disk with the magnetic part to rotate.

[0006] Furthermore, the transmission assembly includes a wheel hub bearing connecting shaft fixedly connected to the six-component sensor, a motor rotor shaft transmission-connected to the wheel hub bearing connecting shaft, a rotor shaft flange fixedly connected to the motor rotor shaft, and the motor rotor disk is fixedly connected to the rotor shaft flange.

[0007] Furthermore, the transmission assembly also includes a double-row ball hub bearing pressed onto the wheel hub bearing connecting shaft, the axis of the double-row ball hub bearing and the wheel hub bearing connecting shaft are coaxial, the inner ring of the double-row ball hub bearing is in contact with the outer wall of the wheel hub bearing connecting shaft, the outer ring of the double-row ball hub bearing is clearance-matched with the inner side of the left housing, a connecting shaft retaining spring groove is provided on the wheel hub bearing connecting shaft, a retaining spring is arranged in the connecting shaft retaining spring groove, and the retaining spring performs axial positioning on the double-row ball hub bearing.

[0008] Furthermore, the left housing assembly also includes a left housing outer cooling water jacket and a left housing inner cooling water jacket arranged on the left housing, the left housing stator winding is located between the left housing outer cooling water jacket and the left housing inner cooling water jacket, and a motor drive control circuit board for controlling the left housing stator winding is arranged on the left housing.

[0009] Furthermore, the load sensing component includes a load sensing circuit board arranged on the left shell body, and a load sensing cover shell arranged on the left shell body, and the load sensing cover shell covers the load sensing circuit board.

[0010] Furthermore, the right housing assembly also includes a right housing outer cooling water jacket and a right housing inner cooling water jacket arranged on the right housing, and the right housing stator winding is located between the right housing outer cooling water jacket and the right housing inner cooling water jacket; a rotating transformer is arranged between the right housing and the rotor shaft flange, the stator part of the rotating transformer is fixedly connected to the right housing, and the rotor part of the rotating transformer is fixedly connected to the rotor shaft flange.

[0011] Furthermore, the right housing assembly also includes a deep groove ball bearing and a sealing ring. The deep groove ball bearing is arranged on the motor rotor shaft, its inner ring is connected to the motor rotor shaft, and its outer ring cooperates with the right housing. The sealing ring is arranged on the motor rotor shaft.

[0012] Furthermore, the smart electric wheel also includes a brake assembly, which includes a brake disc arranged on the motor rotor shaft, a locking unit that fixes the brake disc to the motor rotor shaft, and a brake caliper assembly arranged on the outer wall of the right shell body, and the brake caliper assembly cooperates with the brake disc to brake the smart electric wheel.

[0013] Furthermore, the six-component sensor includes a mounting body, a plurality of connecting columns evenly arranged along the axis of the mounting body, and a plurality of strain gauges arranged around the connecting columns.

[0014] A vehicle is provided with the above-mentioned intelligent electric wheel.

[0015] The beneficial effects of the invention are as follows: by integrating the load sensing component into the intelligent electric wheel of the present solution, setting a six-component sensor and a load sensing circuit board to detect the required load parameters, and preprocessing the electrical signal obtained by the six-component sensor, and then transmitting the signal to the VCU through the signal interface and the low-voltage wiring harness, the VCU can obtain the wheel load data in real time; the intelligent driving algorithm of the VCU reads the data of the load information, and combines with the on-board camera, laser radar and other intelligent sensing devices to realize the VCU's fusion perception and control decision-making of multiple information sources; in this working mode, the VCU not only monitors the operating status of the vehicle under various working conditions in real time, but also can perceive and predict potential risks through control algorithms such as big data and machine learning, thereby improving the intelligence of the vehicle and making the vehicle safer and more stable; and no matter what working condition the vehicle is in, as long as the intelligent electric wheel is in a grounded state to generate wheel load, these load information are all perceived and monitored by the six-component sensor in the transmission path. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the vehicle load coordinate system of the present invention.

[0017] Figure 2 It is a schematic diagram of the electric wheel load coordinate system of the present invention.

[0018] Figure 3 It is a cross-sectional view of the internal structure of the electric wheel of the present invention.

[0019] Figure 4 This is a diagram of the installation structure of the motor rotor assembly of the present invention.

[0020] Figure 5 It is the installation structure diagram of the left housing assembly of the present invention.

[0021] Figure 6 It is an installation structure diagram of the right housing assembly of the present invention.

[0022] Figure 7 This is a structural feature diagram of the motor rotor shaft of the present invention.

[0023] Figure 8 It is an assembly diagram of the subassembly of the hub bearing connecting shaft of the present invention.

[0024] Fig. 9 This is a subassembly assembly diagram of the motor rotor disk of the present invention.

[0025] Fig.10 It is a left side view of the hub motor subassembly of the present invention.

[0026] Fig.11 It is a right side view of the hub motor subassembly of the present invention.

[0027] Fig.12 This is a structural characteristic diagram of the six-component sensor of the present invention.

[0028] Fig.13 It is a schematic diagram of the strain patch structure of the six-component sensor of the present invention.

[0029] Fig.14 FIG. 4 is a schematic diagram of the operation of the six-component sensor of the present invention from a top view angle.

[0030] Fig.15 The longitudinal force of the present invention Schematic diagram of the bridge circuit.

[0031] Fig.16 is the lateral moment of the present invention Schematic diagram of the bridge circuit.

[0032] Attached Figure 2 The markings are: 1. wheel assembly; 2. left housing assembly; 3. motor rotor shaft assembly; 4. right housing assembly.

[0033] Attached Figure 3 The markings in the diagram are: 1-1, six-component sensor; 1-3, double-row ball hub bearing; 1-5, motor rotor shaft; 1-6, rotor shaft flange; 1-7, motor rotor disk; 1-9, brake disk; 1-10, anti-loosening gasket; 1-11, locking nut; 2-1, tire; 2-2, standard rim for passenger cars; 2-3, rim nut; 2-4, rim logo cover; 3-1, left housing; 3-2, sealing ring; 3-3, motor drive control circuit board; 3- 5. Outer cooling water jacket of left housing; 3-6. Inner cooling water jacket of left housing; 3-7. Stator winding of left housing; 3-8. Load sensing cover; 3-9. Load sensing circuit board; 3-11. Needle bearing; 4-1. Right housing; 4-3. Outer cooling water jacket of right housing; 4-4. Inner cooling water jacket of right housing; 4-5. Stator winding of right housing; 4-6. Rotary transformer; 4-9. Brake caliper assembly; 4-12. High-voltage cover plate; 4-13. High-voltage wiring harness connector.

[0034] Attached Figure 4 The markings are: 1-1, six-component sensor; 1-2, hub bearing connecting shaft; 1-3, double-row ball hub bearing; 1-4, retaining spring; 1-5, motor rotor shaft; 1-6, rotor shaft flange; 1-7, motor rotor disk; 1-8, first hexagon socket bolt; 1-9, brake disk; 1-10, anti-loosening gasket; 1-11, locking nut.

[0035] Attached Figure 5The markings are: 3-1, left housing; 3-2, sealing ring; 3-3, motor drive control circuit board; 3-4, PCB bolt; 3-5, outer cooling water jacket of left housing; 3-6, inner cooling water jacket of left housing; 3-7, stator winding of left housing; 3-8, load sensing cover; 3-9, load sensing circuit board; 3-10, second hexagon socket bolt; 3-11, needle bearing; 3-12, bearing cover.

[0036] Attached Figure 6 The markings are: 4-1, right housing; 4-2, external hexagonal bolt; 4-3, outer cooling water jacket of right housing; 4-4, inner cooling water jacket of right housing; 4-5, stator winding of right housing; 4-6, rotary transformer; 4-7, sealing ring; 4-8, deep groove ball bearing; 4-9, brake caliper assembly; 4-10, brake caliper connecting plate; 4-11, third internal hexagonal bolt; 4-12, high-voltage cover plate; 4-13, high-voltage wiring harness connector; 4-14, low-voltage wiring harness connector; 4-15, water pipe cover plate; 4-16, cooling water pipe.

[0037] Attached Figure 7 The markings are: 1-5-1, shaft center lightening hole; 1-5-2, connecting shaft spline guide angle; 1-5-3, connecting shaft external spline; 1-5-4, connecting shaft spline back-cut groove; 1-5-5, connecting shaft stop shaft diameter; 1-5-6, threaded hole; 1-5-7, flange mounting mating end face; 1-5-8, flange lightening hole; 1-5-9, deep groove ball bearing section shaft diameter; 1-5-10, sealing ring section shaft diameter; 1-5-11, sealing ring guide angle; 1-5-12, brake disc spline back-cut groove; 1-5-13, brake disc external spline; 1-5-14, brake disc spline guide angle; 1-5-15, outer wall thread.

[0038] Attached Figure 8 The markings are: 1-2, hub bearing connecting shaft; 1-3, double-row ball hub bearing; 1-4, retaining spring; 1-2-1, connecting shaft guide angle; 1-2-2, connecting shaft retaining spring groove; 1-2-3, rotor shaft stop inner diameter; 1-2-4, rotor shaft inner spline.

[0039] Attached Fig. 9 The markings are: 1-2, hub bearing connecting shaft; 1-2-5, end face threaded hole; 1-3, double-row ball hub bearing; 1-5, motor rotor shaft; 1-7, motor rotor disk; 1-7-1, magnetic steel; 1-7-2, countersunk hole; 1-8, first hexagon socket bolt.

[0040] Attached Fig.10The markings are: 1-5, motor rotor shaft; 3-1, left housing; 3-1-1, left housing bolt mounting seat; 3-1-2, left housing side reinforcement rib; 3-1-3, left housing radial reinforcement rib; 3-2, sealing ring; 3-8, load sensing cover; 3-8-1, cover wiring harness connector; 3-8-2, bolt mounting countersunk hole; 3-10, second hexagon socket bolt; 4-1, right housing.

[0041] Attached Fig.11 The markings are: 1-9, brake disc; 1-9-1, brake disc heat dissipation hole; 1-9-2, brake disc weight reduction hole; 1-9-3, brake disc reinforcement rib; 1-11, locking nut; 3-1, left housing; 3-1-1, left housing bolt mounting seat; 3-1-2, left housing side reinforcement rib; 4-1, right housing; 4-1-1, right housing bolt mounting hole; 4-1-2, right housing side reinforcement rib; 4-1-3, right housing radial reinforcement rib; 4-2, external hexagon bolt; 4-9, brake caliper assembly; 4-10, brake caliper connecting plate; 4-12, high-pressure cover plate; 4-13, high-voltage wiring harness connector; 4-14, low-voltage wiring harness connector; 4-15, water pipe cover plate; 4-16, cooling water pipe.

[0042] Attached Fig.12 The marks in it are: 1-1-1, rim bolt; 1-1-2, rim mounting end face; 1-1-3, rim stop; 1-1-4, hub bearing connecting shaft mounting end face; 1-1-5, bolt mounting through hole; 1-1-S1, six-component sensor connecting column 1; 1-1-S2, six-component sensor connecting column 2; 1-1-S3, six-component sensor connecting column 3; 1-1-S4, six-component sensor connecting column 4.

[0043] Attached Fig.13The marks in the figure are: 1-1-5, bolt installation through hole; 1-1-S1, six-component sensor connection column 1; S1-L1, connection column 1 transverse strain gauge 1; S1-L2, connection column 1 transverse strain gauge 2; S1-L3, connection column 1 transverse strain gauge 3; S1-L4, connection column 1 transverse strain gauge 4; S1-V1, connection column 1 longitudinal strain gauge 1; S1-V2, connection column 1 longitudinal strain gauge 2; S1-V3, connection column 1 longitudinal strain gauge 3; S1- V4, connecting column 1 longitudinal strain gauge 4; 1-1-S2, six-component sensor connecting column 2; S2-L1, connecting column 2 transverse strain gauge 1; S2-L2, connecting column 2 transverse strain gauge 2; S2-L3, connecting column 2 transverse strain gauge 3; S2-L4, connecting column 2 transverse strain gauge 4; S2-V1, connecting column 2 longitudinal strain gauge 1; S2-V2, connecting column 2 longitudinal strain gauge 2; S2-V3, connecting column 2 longitudinal strain gauge 3; S2-V4, connecting Column 2 longitudinal strain gauge 4; 1-1-S3, six-component sensor connection column 3; S3-L1, connection column 3 transverse strain gauge 1; S3-L2, connection column 3 transverse strain gauge 2; S3-L3, connection column 3 transverse strain gauge 3; S3-L4, connection column 3 transverse strain gauge 4; S3-V1, connection column 3 longitudinal strain gauge 1; S3-V2, connection column 3 longitudinal strain gauge 2; S3-V3, connection column 33 longitudinal strain gauge 3; S3-V4, connection column 3 longitudinal Strain gauge 4; 1-1-S4, six-component sensor connecting column 4; S4-L1, transverse strain gauge 1 of connecting column 4; S4-L2, transverse strain gauge 2 of connecting column 4; S4-L3, transverse strain gauge 3 of connecting column 4; S4-L4, transverse strain gauge 4 of connecting column 4; S4-V1, longitudinal strain gauge 1 of connecting column 4; S4-V2, longitudinal strain gauge 2 of connecting column 4; S4-V3, longitudinal strain gauge 3 of connecting column 4; S4-V4, longitudinal strain gauge 4 of connecting column 4.

[0044] Attached Fig.14 The marks in are: 1-1-2, rim mounting end face; S1-L2, transverse strain gauge 2 of connecting column 1; S1-L3, transverse strain gauge 3 of connecting column 1; S1-L4, transverse strain gauge 4 of connecting column 1; S1-V3, longitudinal strain gauge 3 of connecting column 1; S1-V4, longitudinal strain gauge 4 of connecting column 1; S2-L1, transverse strain gauge 1 of connecting column 2; S2-L2, transverse strain gauge 2 of connecting column 2; S2-L3, transverse strain gauge 3 of connecting column 2; S2-V1, longitudinal strain gauge 1 of connecting column 2; S2-V2, longitudinal strain gauge 2 of connecting column 2; S3-L4, transverse strain gauge 4 of connecting column 3; S3-V1, longitudinal strain gauge 1 of connecting column 3; S3-V3, longitudinal strain gauge 3 of connecting column 33; S3-V4, longitudinal strain gauge 4 of connecting column 3.

[0045] Attached Fig.15The marks in the figure are: S1-L3, transverse strain gauge 3 of connecting column 1; S1-L4, transverse strain gauge 4 of connecting column 1; S2-L1, transverse strain gauge 1 of connecting column 2; S2-L2, transverse strain gauge 2 of connecting column 2; S3-L1, transverse strain gauge 3 of connecting column 1; S3-L2, transverse strain gauge 2 of connecting column 3; S4-L3, transverse strain gauge 3 of connecting column 4; S4-L4, transverse strain gauge 4 of connecting column 4.

[0046] Attached Fig.16 The marks in the figure are: S1-L1, transverse strain gauge 1 of connecting column 1; S1-L2, transverse strain gauge 2 of connecting column 1; S2-L1, transverse strain gauge 1 of connecting column 2; S2-L2, transverse strain gauge 2 of connecting column 2; S3-L3, transverse strain gauge 3 of connecting column 3; S3-L4, transverse strain gauge 4 of connecting column 3; S4-L3, transverse strain gauge 3 of connecting column 4; S4-L4, transverse strain gauge 4 of connecting column 4. DETAILED DESCRIPTION

[0047] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0048] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0050] Figure 1It is a schematic diagram of the vehicle load coordinate system of the present invention. The electric car adopts a distributed drive mode and is equipped with four intelligent electric wheel systems (left front wheel W1, right front wheel W2, left rear wheel W3, right rear wheel W4), which are independently controlled and driven. When the vehicle is moving, in order to fully decompose and consider the complex motion conditions, a vehicle coordinate system is established, with the vehicle's forward direction as the x-axis, the vehicle's lateral direction as the y-axis, and the direction perpendicular to the ground as the z-axis. Correspondingly, the vehicle coordinate system is converted to the wheel coordinate system, and finally the data on the six components of the wheel load are monitored. Taking the right front wheel as an example, the six components monitored are: longitudinal force , longitudinal moment (also called overturning moment), lateral force , lateral moment (also called rolling moment), vertical force , vertical moment (Also called self-aligning torque).

[0051] Figure 2 The figure is a schematic diagram of the load coordinate system of the electric wheel of the present invention. The coordinate system of the wheel system of the electric wheel and its six components are shown in the figure. The electric wheel system is composed of four assemblies, namely: the motor rotor shaft assembly 3, the wheel assembly 1, the left housing assembly 2, and the right housing assembly 4. The left housing assembly 2 is located on the side close to the outer side of the rim, that is, The right housing assembly 4 is located near the outer side of the rim, that is, negative direction.

[0052] Figure 3It is a cross-sectional view of the internal structure of the electric wheel of the present invention. As can be seen from the figure, the wheel assembly 1 is composed of the following components: a tire 2-1, a standard rim 2-2 for passenger cars, a rim nut 2-3, and a rim logo cover 2-4. Among them, the tire 2-1 is installed on the rim 2-2, and the rim 2-2 is matched with four rim nuts 2-3 evenly distributed in the characteristic hole along the center of the rim. The four bolts of the six-component sensor 1-1 are evenly distributed along the end face, pass through the installation characteristic holes of the rim 2-2 and are tightened with the hub nut 2-3 to achieve the fixed connection between the six-component sensor 1-1 and the rim 2-2. The rim logo cover 2-4 is installed at the center of the wheel to prevent dust and the impact of splashing sand and stones, and the logo stamp can have a beautiful visual effect. The motor rotor shaft 1-5 is fixedly connected to the rotor shaft flange 1-6. The rotor shaft flange 1-6 is fixedly connected to the motor rotor disk 1-7. The deep groove ball bearing 4-8 is installed in the corresponding bearing seat position of the right housing 4-1 after interference fit with the motor rotor shaft 1-5. The brake disc 1-9 is splined with the motor rotor shaft 1-5, and the axial positioning and anti-loosening are achieved by tightening the locking nut 1-11 and the anti-loosening gasket 1-10. The sealing ring 3-2 is fixedly connected to the left housing 3-1. The motor drive control circuit 3-3 is fixedly connected to the left housing 3-1. The outer cooling water jacket 3-5 of the left housing is fixedly connected to the left housing 3-1. The inner cooling water jacket 3-6 of the left housing is fixedly connected to the left housing 3-1. The stator winding 3-7 of the left housing is fixedly connected to the left housing 3-1. The load sensing cover 3-8 is fixedly connected to the left housing 3-1. The load sensing circuit board 3-9 is fixedly connected to the left housing 3-1. The needle bearing 3-11 is installed in the bearing seat position of the left housing 3-1, and is clearance-matched with the inner hole of the rotor shaft flange 1-6, which plays an auxiliary supporting role for the operation of the rotor shaft flange 1-6. The outer cooling water jacket 4-3 of the right housing is fixedly connected to the right housing 4-1. The inner cooling water jacket 4-4 of the right housing is fixedly connected to the right housing 4-1. The stator winding 4-5 of the right housing is fixedly connected to the right housing 4-1. The stator part of the rotary transformer 4-6 is fixedly connected to the right housing 4-1, and the rotor part is fixedly connected to the motor rotor shaft 1-5. The brake caliper assembly 4-9 is fixedly connected to the right housing 4-1. The high-voltage cover plate 4-12 is fixedly connected to the right housing 4-1. The high-voltage wiring harness connector 4-13 is fixed in position through the high-voltage cover plate 4-12 and connected to the terminal of the stator winding.

[0053] Figure 4The figure is a diagram of the installation structure of the motor rotor shaft assembly of the present invention. The motor rotor shaft assembly includes: a six-component sensor 1-1, a hub bearing connecting shaft 1-2, a double-row ball hub bearing 1-3, a retaining spring 1-4, a motor rotor shaft 1-5, a rotor shaft flange 1-6, a motor rotor disc 1-7, a first hexagon socket bolt 1-8, a brake disc 1-9, a locking nut 1-11, and an anti-loosening gasket 1-10. The six-component sensor 1-1 is fixedly connected to the hub bearing connecting shaft 1-2 by the first hexagon socket bolt 1-8. The double-row ball hub bearing 1-3 is press-fitted onto the hub bearing connecting shaft 1-2. The motor rotor shaft 1-5 is fixedly connected to the rotor shaft flange 1-6 by the first hexagon socket bolt 1-8. The motor rotor shaft 1-5 is matched and transmitted with the hub bearing connecting shaft 1-2 through a spline and a stopper, wherein the spline is tooth side centered, and the major diameter and minor diameter of the spline are both clearance matched; the stopper is also clearance matched, so that the support and centering functions between the two are achieved, and at the same time, easy disassembly and assembly are ensured. The motor rotor disk 1-7 is fixedly connected with the rotor shaft flange 1-6 through the first hexagon socket bolt 1-8. The motor rotor shaft 1-5 is matched and positioned with the brake disc 1-9 through a spline and a shoulder, wherein the spline is tooth side centered, and the major diameter and minor diameter of the spline are both clearance matched, and the brake disc is installed into the motor rotor shaft through the spline and axially positioned through the shoulder. An anti-loosening washer 1-10 and a locking nut 1-11 are installed on the end face of the brake disc 1-9, so that the motor rotor shaft 1-5, the brake disc 1-9, the anti-loosening washer 1-10 and the locking nut 1-11 are fixedly connected and prevented from loosening.

[0054] Figure 5 The left housing assembly of the present invention is an installation structure diagram. The left housing assembly includes: a left housing 3-1, a sealing ring 3-2, a motor drive control circuit board 3-3, a PCB bolt 3-4, a left housing outer cooling water jacket 3-5, a left housing inner cooling water jacket 3-6, a left housing stator winding 3-7, a load sensing cover 3-8, a load sensing circuit board 3-9, a second hexagon socket bolt 3-10, a needle bearing 3-11, and a bearing cover plate 3-12. Among them, the sealing ring 3-2 is pressed into the installation hole of the left housing 3-1 "such as Fig.10 As shown in the figure, the sealing ring lip is matched with the standard rim of a passenger car, and the working environment is a dry cavity, so as to realize waterproof and dustproof in the dry cavity. The motor drive control circuit board 3-3 is installed in the corresponding hole position of the left housing 3-1 through the PCB bolt 3-4. Fig.10 As shown". The left shell outer cooling water jacket 3-5 and the left shell inner cooling water jacket 3-6 are respectively installed at the corresponding positions of the left shell 3-1 and fixedly connected thereto. The left shell stator winding 3-7 is installed between the inner / outer cooling water jackets of the left shell and fixedly connected thereto. The load sensing circuit board 3-9 is installed on the left shell 3-1 through the PCB bolt 3-4, and then the load sensing cover 3-8 is fixedly connected to the left shell 3-1 through the second hexagon socket bolt 3-10. "As shown Fig.10As shown". The needle bearing 3-11 is installed on the bearing seat position of the left housing 3-1, that is, the protrusion in the middle of the inner side of the left housing 3-1, and then the bearing cover plate 3-12 is fixedly connected to the second protrusion of the left housing 3-1 through the second hexagon socket bolt 3-10. The end face of the bearing cover plate 3-12 and the end face of the needle bearing 3-11 have a clearance to ensure the normal operation of the needle bearing 3-11. When the motor is working, the coolant in the inner / outer cooling water jacket circulates to cool and dissipate the winding coil. The load sensing circuit board is installed in the corresponding hole position of the left housing through the PCB bolt, and then the load sensing cover is fixedly connected to the left housing through the second hexagon socket bolt to realize the signal transmission of the load sensing circuit board.

[0055] Figure 6The right housing assembly of the present invention is an installation structure diagram. The right housing assembly includes: right housing 4-1, outer hexagonal bolts 4-2, right housing outer cooling water jacket 4-3, right housing inner cooling water jacket 4-4, right housing stator winding 4-5, rotary transformer 4-6, deep groove ball bearing 4-8, sealing ring 4-7, brake caliper assembly 4-9, brake caliper connecting plate 4-10, third inner hexagonal bolt 4-11, low-voltage harness connector 4-14, high-voltage cover plate 4-12, high-voltage harness connector 4-13, water pipe cover plate 4-15, cooling water pipe 4-16. Among them, the right housing 4-1 is connected to the left housing 3-1 through the outer hexagonal bolts 4-2, and the right housing outer cooling water jacket 4-3 and the right housing inner cooling water jacket 4-4 are respectively installed at the corresponding positions of the right housing 4-1 and fixedly connected thereto. The right housing stator winding 4-5 is installed between the inner and outer cooling water jackets of the right housing and is fixedly connected thereto. When the motor is working, the coolant in the inner and outer cooling water jackets circulates to cool and dissipate the heat of the winding coil. The stator part of the rotary transformer 4-6 is fixedly connected to the right housing through the third hexagon socket bolt 4-11, and the rotor part of the rotary transformer 4-6 is fixedly connected to the rotor shaft flange 1-5. When the motor is working, the magnetic part on the motor rotor disk 1-7, which is the magnetic steel 1-7-1 in this embodiment, generates magnetic force to rotate under the action of the current of the right housing stator winding 4-5, thereby causing the motor rotor disk 1-7 to drive the rotor shaft flange 1-6, the motor rotor shaft 1-5, and the rotary transformer 4-6 rotor to rotate at the same angular velocity. The position signal provided by the rotary transformer rotor is used for motor control and speed regulation. The brake caliper assembly 4-9 is tightened and installed to the corresponding position of the right housing 4-1 through the brake caliper connecting plate 4-10 with the third hexagon socket bolt 4-11. The low-voltage harness connector 4-14 is installed to the corresponding threaded hole of the right housing 4-1 with an external thread. The high-voltage harness connector 4-13 is installed to the corresponding position of the right housing 4-1 through the high-voltage cover plate 4-12. The cooling water pipe 4-16 is installed to the corresponding position of the right housing 4-1 through the water pipe cover plate 4-15. The cooling water pipe is installed to the corresponding position of the right housing through the water pipe cover plate. The cooling water pipe is connected to the external thermal management unit, and the active circulation of the coolant is realized through the water pump.

[0056] Figure 7The structural feature diagram of the motor rotor shaft of the present invention. As shown in the figure, the motor rotor shaft 1-5 has an axial center weight reduction hole 1-5-1 for weight reduction. The external spline 1-5-3 of the connecting shaft is used to achieve the matching and transmission with the hub bearing connecting shaft 1-2. The spline is centered on the tooth side, and the major diameter and minor diameter of the spline are both clearance fits to ensure easy disassembly and assembly. The connecting shaft spline guide angle 1-5-2 is used to achieve the guiding effect during spline assembly to avoid edge cutting or interference. The connecting shaft spline tool retraction groove 1-5-4 is a process feature, which is used for tool retraction when machining the spline. The connecting shaft stop shaft diameter 1-5-5 and the corresponding hole diameter of the hub bearing connecting shaft 1-2 are clearance fits. In addition to providing support by the spline tooth side centering method, auxiliary support is provided by the cooperation of the stop, while ensuring easy disassembly and assembly. The threaded hole 1-5-6 is arranged on the flange mounting mating end face 1-5-7. When the rotor shaft flange 1-6 is installed, the rotor shaft flange 1-6 is tightly attached to the flange mounting mating end face 1-5-7, and the third hexagon socket bolt 1-8 is inserted into the threaded hole 1-5-6 and tightened to fix the motor rotor shaft 1-5 with the rotor shaft flange 1-6. The flange weight reduction holes 1-5-8 are evenly distributed along the center axis at the flange surface for weight reduction. The deep groove ball bearing section shaft diameter 1-5-9 forms an interference fit with the inner ring of the deep groove ball bearing 4-8 for transmission and support. The sealing ring section shaft diameter 1-5-10 forms a fit with the sealing ring 4-7 to play a role in waterproofing and dustproofing. The sealing ring guide angle 1-5-11 is used to achieve a guiding effect during assembly to prevent the lip of the sealing ring 4-7 from cutting and causing leakage. The outer spline 1-5-13 of the brake disc is used to achieve the matching and transmission with the brake disc 1-9. The spline is centered on the tooth side, and the major and minor diameters of the spline are clearance fit to ensure easy assembly and disassembly. The brake disc spline guide angle 1-5-14 is used to achieve the guiding effect during spline assembly to avoid cutting or interference. The brake disc spline back-off groove 1-5-12 is a process feature, which is used for tool back-off when machining the spline. The outer wall thread 1-5-15 is used to cooperate with the locking nut 1-11.

[0057] Figure 8 This is the sub-assembly assembly diagram of the hub bearing connecting shaft of the present invention. Among them, the outer ring of the double-row ball hub bearing 1-3 is at the corresponding position of the left housing 3-1 and has a clearance fit with the inner hole of the bearing seat. The inner ring of the double-row ball hub bearing 1-3 is pressed into the corresponding position of the hub bearing connecting shaft 1-2 and has an interference fit with the shaft diameter. The retaining spring 1-4 is installed in the retaining spring groove 1-2-2 of the connecting shaft, which plays a role in axial positioning of the double-row ball hub bearing 1-3. The connecting shaft guide angle 1-2-1 is used to achieve a guiding effect during bearing assembly to avoid cutting edges or interference. The inner diameter of the rotor shaft stop 1-2-3 and the inner spline 1-2-4 of the rotor shaft and Figure 7 The external spline 1-5-3 of the connecting shaft and the shaft diameter 1-5-5 of the connecting shaft stop are matched to realize support and transmission.

[0058] Fig. 9 The figure is a sub-assembly diagram of the motor rotor disk of the present invention. Among them, the hub bearing connecting shaft 1-2 and the double-row ball hub bearing 1-3 are connected with each other. Figure 8 The method is used for installation. The end face threaded hole 1-2-5 is provided on the end face of the hub bearing connecting shaft 1-2. When the six-component sensor 1-1 is installed, the six-component sensor 1-1 is tightly attached to the end face of the hub bearing connecting shaft 1-2, and the first hexagon socket bolt 1-8 is inserted into the end face threaded hole 1-2-5 and tightened, so that the six-component sensor 1-1 is fixedly connected to the hub bearing connecting shaft 1-2. The end face of the motor rotor disk 1-7 is provided with countersunk holes 1-7-2 evenly distributed along the axis, and the first hexagon socket bolt 1-8 is installed and tightened through the countersunk holes 1-7-2, and the screw head portion of the first hexagon socket bolt 1-8 is embedded in the countersunk hole 1-7-2 to avoid axial interference. The magnets 1-7-1 are grouped in a transverse stacked form and evenly distributed on the motor rotor disk 1-7 along the axis. When the motor is working, the magnets 1-7-1 generate magnetic force under the action of the winding current to drive the motor rotor disk 1-7 to rotate, and the motor rotor disk 1-7 drives the rotor shaft flange 1-6 and the motor rotor shaft 1-5 to rotate at the same angular velocity.

[0059] Fig.10 It is a left view of the hub motor subassembly of the present invention. Among them, the sealing ring 3-2 and the inner hole of the bearing seat of the left housing 3-1 are interference fit, and the sealing ring 3-2 is installed in the corresponding position of the left housing 3-1 by press fitting. The motor rotor shaft 1-5 drives the hub bearing connecting shaft 1-2 to rotate at the same speed through the spline. The load sensing cover 3-8 is installed in the corresponding position of the left housing 3-1 through the second hexagon socket bolt 3-10. A cover wire harness connector 3-8-1 is provided in the circumferential direction of the load sensing cover 3-8 for leading out the low-voltage wire harness and arranging the buried wire in the cavity of the housing. The load sensing cover 3-8 has four bolt mounting countersunk holes 3-8-2 evenly distributed along the central axis, and the screw head portion of the second hexagon socket bolt 3-10 is embedded in the bolt mounting countersunk hole 3-8-2 to avoid axial interference. The side surface of the left housing 3-1 is provided with a left housing side reinforcement rib 3-1-2 along the circumferential direction to strengthen the rigidity of the matching section between the housing and the left housing outer cooling water jacket 3-5. The end surface of the left housing 3-1 is provided with a left housing radial reinforcement rib 3-1-3 along the central axis direction to strengthen the rigidity of the matching section between the housing and the sealing ring 3-2. The side surface of the left housing 3-1 is provided with a left housing bolt mounting seat 3-1-1 along the central axis direction to provide a mounting positioning feature surface with the right housing 4-1.

[0060] Fig.11It is a right view of the hub motor sub-assembly of the present invention. Among them, the mounting end faces of the left housing 3-1 and the right housing 4-1 are tightly matched, and the hexagonal bolt 4-2 is installed into the corresponding threaded hole of the left housing bolt mounting seat 3-1-1 through the right housing bolt mounting hole 4-1-1 and tightened. During assembly, glue is appropriately applied to the housing mounting end face to play a certain auxiliary fastening and sealing role. The end face of the right housing 4-1 is provided with a right housing radial reinforcement rib 4-1-3 along the central axis direction to strengthen the rigidity of the matching section between the housing and the deep groove ball bearing 4-8. Symmetrically with the left housing side reinforcement rib 3-1-2 on the side of the left housing 3-1, the side of the right housing 4-1 is provided with a right housing side reinforcement rib 4-1-2 along the circumferential direction to strengthen the rigidity of the matching section between the housing and the outer cooling water jacket 4-3 of the right housing. The low-voltage wiring harness connector 4-14 is installed into the corresponding threaded hole of the right housing 4-1 with an external thread. The high-voltage harness connector 4-13 is installed to the corresponding position of the right housing 4-1 through the high-voltage cover plate 4-12. The cooling water pipe 4-16 is installed to the corresponding position of the right housing 4-1 through the water pipe cover plate 4-15. The cooling water pipe 4-16 is connected to the external thermal management unit, and the active circulation of the coolant is realized through the water pump. When the vehicle accelerates, the motor twists, and the coolant in the inner / outer cooling water jacket circulates to cool the winding coil and dissipate heat, ensuring that the operating temperature of the motor is in a reasonable range. The brake caliper assembly 4-9 is installed to the corresponding position of the right housing through the brake caliper connecting plate 4-10. When the vehicle brakes, the brake caliper assembly 4-9 clamps the brake disc 1-9 to decelerate it. Since the brake disc 1-9 is fixedly connected to the motor rotor shaft 1-5 through the spline, it drives the hub bearing connecting shaft 1-2, the six-component sensor 1-1 and the rim 2-2 to decelerate, thereby realizing the braking of the wheel. The end face of the brake disc 1-9 is symmetrically provided with brake disc heat dissipation holes 1-9-1 along the central axis to prevent the brake disc 1-9 from overheating during emergency braking and ensure that the operating temperature of the brake system is within a reasonable range. The brake disc 1-9 is symmetrically provided with brake disc weight reduction holes 1-9-2 along the central axis, which not only reduce the weight but also serve as process holes for calibrating the dynamic balance of the brake system. The brake disc 1-9 is symmetrically provided with brake disc reinforcement ribs 1-9-3 along the central axis to increase the stiffness of the spline matching section between the brake disc 1-9 and the motor rotor shaft 1-5.

[0061] Fig.12The figure is a structural feature diagram of the six-component sensor of the present invention. The position of the wheel coordinate system in the six-component sensor is shown in the figure. When installing the wheel, the clearance between the rim stop 1-1-3 and the rim center hole plays a centering and guiding role. The four rim bolts 1-1-1 are evenly distributed along the end surface, pass through the installation feature holes of the rim 2-2 and are tightened with the hub nut 2-3. The rim and the rim installation end surface 1-1-2 are tightly attached to complete the assembly and positioning of the wheel. At the other end, the hub bearing connecting shaft installation end surface 1-1-4 cooperates with the hub bearing connecting shaft, and the bolt installation through hole 1-1-5 passes through the first hexagon socket bolt 1-8 and is tightened to complete the assembly and positioning of the hub bearing connecting shaft. In the axial space between the rim mounting end face 1-1-2 and the hub bearing connecting shaft mounting end face 1-1-4, four connecting columns are evenly distributed along the axis, namely, six-component sensor connecting column 1 (1-1-S1), six-component sensor connecting column 2 (1-1-S2), six-component sensor connecting column 3 (1-1-S3), and six-component sensor connecting column 4 (1-1-S4). While transmitting the load, these four connecting columns use the Wheatstone bridge principle to monitor the deformation using resistance strain gauges to obtain load information data.

[0062] Fig.13 The diagram is a schematic diagram of the strain patch structure of the six-component sensor of the present invention. The wheel coordinate system is shown in the upper left corner of the figure. The four connecting columns are located slightly outside the bolt mounting through hole 1-1-5 and are evenly distributed along the central axis. Each connecting column is affixed with strain gauges around it. According to their different directions, the strain gauges whose long sides are perpendicular to the mounting end surface are called transverse strain gauges, and the strain gauges whose long sides are parallel to the mounting end surface are called longitudinal strain gauges. Specifically, the upper plane of the six-component sensor connecting column 1 (1-1-S1) is affixed with two transverse strain gauges, namely, connecting column 1 transverse strain gauge 1 (S1-L1) and connecting column 1 transverse strain gauge 2 (S1-L2). The lower plane of the six-component sensor connecting column 1 (1-1-S1) is affixed with two longitudinal strain gauges, namely, connecting column 1 longitudinal strain gauge 3 (S1-V3) and connecting column 1 longitudinal strain gauge 4 (S1-V4). The left plane of the six-component sensor connecting column 1 (1-1-S1) is attached with two longitudinal strain gauges, namely, connecting column 1 longitudinal strain gauge 1 (S1-V1) and connecting column 1 longitudinal strain gauge 2 (S1-V2). The right plane of the six-component sensor connecting column 1 (1-1-S1) is attached with two transverse strain gauges, namely, connecting column 1 transverse strain gauge 3 (S1-L3) and connecting column 1 transverse strain gauge 4 (S1-L4). Similarly, the six-component sensor connecting column 2 (1-1-S2), the six-component sensor connecting column 3 (1-1-S3), and the six-component sensor connecting column 4 (1-1-S4) are also arranged with such strain gauges, thereby forming the resistors required for the circuit bridge to detect load information. The specific positions are shown in FIG. Fig.13 The markings are not repeated one by one.

[0063] Fig.14 This is a top view of the six-component sensor of the present invention. The wheel coordinate system is shown in the upper left corner of the figure, and the vehicle's forward direction is the positive direction of the x-axis. The perspective in the figure shows the spatial position and working state of the strain gauge at this time.

[0064] Fig.15 The longitudinal force of the present invention The schematic diagram of the bridge circuit is as follows: Fig.16 is the lateral moment of the present invention Schematic diagram of the bridge circuit. From the working status of the two bridges, it can be seen that the bridge composed of the transverse strain gauge 3 (S1-L3) of connecting column 1, the transverse strain gauge 4 (S1-L4) of connecting column 1, the transverse strain gauge 1 (S2-L1) of connecting column 2, the transverse strain gauge 2 (S2-L2) of connecting column 2, the transverse strain gauge 1 (S3-L1) of connecting column 3, the transverse strain gauge 2 (S3-L2) of connecting column 3, the transverse strain gauge 3 (S4-L3) of connecting column 4, and the transverse strain gauge 4 (S4-L4) of connecting column 4 have no effect on the longitudinal force. Real-time monitoring is performed; the bridge composed of the transverse strain gauge 1 (S1-L1) of connecting column 1, the transverse strain gauge 2 (S1-L2) of connecting column 1, the transverse strain gauge 1 (S2-L1) of connecting column 2, the transverse strain gauge 2 (S2-L2) of connecting column 2, the transverse strain gauge 3 (S3-L3) of connecting column 3, the transverse strain gauge 4 (S3-L4) of connecting column 3, the transverse strain gauge 3 (S4-L3) of connecting column 4, and the transverse strain gauge 4 (S4-L4) of connecting column 4 is used for transverse moment monitoring. When the vehicle is accelerating, the motor is in working state and outputs driving torque. The transmission route passes through the motor rotor disk, rotor shaft flange, motor rotor shaft, hub bearing connecting shaft, six-component sensor, wheel rim and finally reaches the tire. At this time, the longitudinal force monitored by the six-component sensor is is positive, and the lateral moment The direction is the same as the direction of wheel rotation. When the vehicle is in forward braking, the brake caliper is in working state to output braking torque. The transmission route passes through the motor rotor shaft, the hub bearing connecting shaft, the six-component sensor, the wheel rim and finally reaches the tire. At this time, the longitudinal force monitored by the six-component sensor of the brake disc is is negative, and the lateral moment The direction is opposite to the direction of wheel rotation.

[0065] When the vehicle is in a turning condition, the vehicle body has a series of pitching, rolling and other motion postures. The loads that appear in the turning process are transmitted through the tire, rim, six-component sensor, hub bearing connecting shaft, double-row ball hub bearing and finally reach the left housing. The corresponding six-component sensor also reads a series of load information data in the turning process, including: longitudinal force, longitudinal moment, lateral force, lateral moment, vertical force, and vertical moment. When the vehicle is in a stationary condition, the tire only has vertical force to support the body weight. The transmission route is transmitted through the tire, rim, six-component sensor, hub bearing connecting shaft, double-row ball hub bearing and finally reaches the left housing. The corresponding six-component sensor reads the vertical force. Similarly, through space transformation and coordinate system substitution, the detection bridge of the six-component sensor can detect the corresponding six physical quantities, which will not be repeated here.

[0066] In summary, no matter what working condition the vehicle is in (acceleration, braking, steering, stationary), as long as the wheel is in the grounded state and generates wheel load, all this load information is sensed and monitored by the six-component sensor in the transmission path, thereby realizing the intelligent function of integrated perception and transmission of the electric wheel in this example.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0068] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A smart electric wheel, characterized in that: It comprises a wheel assembly, a left housing assembly and a right housing assembly arranged inside the wheel assembly, wherein the left housing assembly is fixedly connected to the right housing assembly; and a motor rotor shaft assembly which sequentially penetrates the right housing assembly and the left housing assembly and is fixedly connected to the wheel assembly; The motor rotor shaft assembly includes a six-component sensor fixedly connected to the wheel assembly, the six-component sensor is used to read the data of six components in the smart electric wheel coordinate system, the motor rotor shaft assembly also includes a transmission assembly fixedly connected to the six-component sensor, a motor rotor disk arranged on the transmission assembly, and a plurality of magnetic parts arranged on the motor rotor disk; The left housing assembly includes a left housing, a left housing stator winding arranged on the left housing, and a load sensing component arranged on the left housing; the right housing assembly includes a right housing and a right housing stator winding arranged on the right housing; magnetic force is generated under the action of current in the left housing stator winding and the right housing stator winding to drive the motor rotor disk with the magnetic part to rotate.

2. The smart electric wheel according to claim 1, characterized in that: The transmission assembly includes a wheel hub bearing connecting shaft fixedly connected to the six-component sensor, a motor rotor shaft transmission-connected to the wheel hub bearing connecting shaft, a rotor shaft flange fixedly connected to the motor rotor shaft, and the motor rotor disk is fixedly connected to the rotor shaft flange.

3. The intelligent electric wheel according to claim 2, characterized in that: The transmission assembly also includes a double-row ball hub bearing pressed onto the wheel hub bearing connecting shaft, the axis of the double-row ball hub bearing and the wheel hub bearing connecting shaft are coaxial, the inner ring of the double-row ball hub bearing is in contact with the outer wall of the wheel hub bearing connecting shaft, the outer ring of the double-row ball hub bearing is clearance-matched with the inner hole of the left housing, a connecting shaft retaining spring groove is provided on the wheel hub bearing connecting shaft, a retaining spring is arranged in the connecting shaft retaining spring groove, and the retaining spring performs axial positioning on the double-row ball hub bearing.

4. The smart electric wheel according to claim 1, characterized in that: The left housing assembly also includes a left housing outer cooling water jacket and a left housing inner cooling water jacket arranged on the left housing, the left housing stator winding is located between the left housing outer cooling water jacket and the left housing inner cooling water jacket, and a motor drive control circuit board for controlling the left housing stator winding is arranged on the left housing.

5. The smart electric wheel according to claim 1, characterized in that: The load sensing component includes a load sensing circuit board arranged on the left housing, and a load sensing cover shell arranged on the left housing, wherein the load sensing cover shell covers the load sensing circuit board.

6. The intelligent electric wheel according to claim 1, characterized in that: The right housing assembly also includes a right housing outer cooling water jacket and a right housing inner cooling water jacket arranged on the right housing, and the right housing stator winding is located between the right housing outer cooling water jacket and the right housing inner cooling water jacket; a rotating transformer is arranged between the right housing and the rotor shaft flange, the stator part of the rotating transformer is fixedly connected to the right housing, and the rotor part of the rotating transformer is fixedly connected to the rotor shaft flange.

7. The intelligent electric wheel according to claim 2, characterized in that: The right housing assembly also includes a deep groove ball bearing and a sealing ring. The deep groove ball bearing is arranged on the motor rotor shaft, the inner ring of which is connected to the motor rotor shaft, and the outer ring cooperates with the right housing. The sealing ring is arranged on the motor rotor shaft.

8. The intelligent electric wheel according to claim 2, characterized in that: The smart electric wheel also includes a brake assembly, which includes a brake disc arranged on the motor rotor shaft, a locking unit that fixes the brake disc to the motor rotor shaft, and a brake caliper assembly arranged on the outer wall of the right shell body, and the brake caliper assembly cooperates with the brake disc to brake the smart electric wheel.

9. The intelligent electric wheel according to claim 1, characterized in that: The six-component sensor comprises a mounting body, a plurality of connecting columns evenly arranged along the axis of the mounting body, and a plurality of strain gauges arranged around the connecting columns.

10. A vehicle, characterized in that: The vehicle is provided with the smart electric wheel according to any one of claims 1 to 9.

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