CN111845320B

CN111845320B - Drive-brake integrated electric wheel integrating disc type hub motor and speed reducer and automobile

Info

Publication number: CN111845320B
Application number: CN201910349765.9A
Authority: CN
Inventors: 陈锋; 马志敏; 黄梅仙; 汤充
Original assignee: Zhejiang VIE Science and Technology Co Ltd
Current assignee: Zhejiang VIE Science and Technology Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2022-03-18
Anticipated expiration: 2039-04-28
Also published as: CN111845320A

Abstract

The invention relates to the field of wheel hub motor integrated wheels, and discloses a driving and braking integrated electric wheel integrating a disc type wheel hub motor and a speed reducer and an automobile, wherein the driving and braking integrated electric wheel comprises an external rim, and the disc type motor, the speed reducer and a brake disc which are arranged in the rim; the rotor is connected with the input end of the speed reducer to drive the speed reducer to work, the rim is connected with the output end of the speed reducer to realize rotation, the stator assembly is electrified to drive the rotor to rotate to drive the speed reducer to operate, and the output end of the speed reducer drives the rim to rotate. The invention creatively integrates the motor, the speed reducer and the brake in the rim, so the compactness of the whole structure is better, the occupied space is small, the space utilization rate is high, and the cost and the space of the automobile are saved.

Description

Drive-brake integrated electric wheel integrating disc type hub motor and speed reducer and automobile

Technical Field

The invention relates to the field of hub motors, in particular to a driving and braking integrated electric wheel integrating a disc type hub motor and a speed reducer and an automobile.

Background

Chinese invention patent 200910137765.9 discloses an integrated hub motor, which discloses the technical scheme as follows: the motor comprises a motor shaft and a stator fixed on the motor shaft, wherein a rotor shell is sleeved outside the stator, the front end and the rear end of the rotor shell are rotatably fixed on the motor shaft through a rotor end cover and a bearing, the two ends of the motor shaft protrude out of the rotor end cover to form a long end and a short end, the outer side of the rotor end cover is fixedly provided with a bearing end cover, the short end of the motor shaft is covered in the bearing end cover, the middle part of the bearing end cover is convexly provided with a bearing end cover shaft which is convexly arranged towards the direction of the motor shaft, and the corresponding positions of the end part of the motor shaft and the bearing end cover shaft are provided with position detection devices; a servo controller is also sleeved on the motor shaft; the position detection device senses the rotation of the bearing end cover shaft and transmits the sensed signal to the servo controller, and the rotating angle or position of the rotor is obtained through the processing of the servo controller, so that the motor is accurately controlled. The technical scheme provides an integrated hub motor for improving the performance of the motor.

Chinese patent application 201780023404.4 discloses a wheel module including a brake, a motor, and a hub unit, and a wheel module according to an embodiment of the present invention includes a hub, a motor, a holding member, and a brake. The hub is for mounting the tire. The motor is disposed inside the hub, and includes a stator and a rotor. The shaft is fixed to the rotor coaxially with the rotation shaft of the rotor, and transmits the rotational force of the rotor to the hub. The holding member holds the stator. The brake restricts rotation of the shaft. One end of the holding member in the axial direction of the rotating shaft of the rotor is fixedly supported by the support member. The brake is disposed on the side opposite to the hub with the support member interposed therebetween. The shaft extends into the brake through a through hole formed in one end of the holding member and the support member.

The technical scheme has the advantages of complex structure and narrow application range. Meanwhile, the integration degree of the integrated wheel is low, the reliability is poor, and the brake is not designed with the wheel in an integrated mode.

Disclosure of Invention

According to the defects of low transmission sensitivity of braking torque, not compact enough structure, large space occupancy rate and the like in the prior art, the invention provides the driving and braking integrated electric wheel integrating the disc type hub motor and the speed reducer.

In order to solve the technical problem, the invention is solved by the following technical scheme:

the integrated disc type hub motor and speed reducer driving and braking integrated electric wheel comprises an external rim, a disc type motor, a speed reducer, a brake disc and a main shaft, wherein the disc type motor, the speed reducer and the brake disc are installed in the rim; the rotor is connected with the input end of the speed reducer to drive the speed reducer to work, the rim is connected with the output end of the speed reducer to realize rotation, the stator assembly is electrified to drive the rotor to rotate to drive the speed reducer to operate, and the output end of the speed reducer drives the rim to rotate. This technical scheme creatively integrates disc motor, reduction gear and brake disc in the rim to it integrates the degree height to have realized the integration wheel, makes the assembly simpler, convenient.

Preferably, install the wheel hub bearing unit on the main shaft, the main shaft links firmly with the non-rotation portion of wheel hub bearing unit, and the rotor is installed on the rotation portion of wheel hub bearing unit, and stator module includes left stator and right stator, left stator and right stator fixed connection, and forms the installation cavity that is used for placing the rotor between left stator and the right stator, left stator and wheel hub bearing unit fixed connection. The hub bearing unit plays a role in supporting and driving.

Preferably, the speed reducer is a planetary speed reducer and comprises a sun wheel, a planet carrier, a planet wheel, a gear ring cover plate, a speed reducer gear ring and a planet carrier cover plate, wherein the planet wheel, the planet carrier, the planet wheel, the gear ring cover plate, the speed reducer gear ring and the planet carrier cover plate are arranged on the planet carrier; the rotor rotates to drive the sun wheel to synchronously rotate, the sun wheel drives the planet carrier to rotate through meshing with the planet wheel, and the planet carrier drives the brake disc and the rim to synchronously rotate. The planetary reducer has the characteristics of small volume, light weight, high bearing capacity, long service life, stable operation, low noise and unique functions of power splitting and multi-tooth meshing. The space in can the matching rim, can match the motor and use after through the design moreover, convenient assembling is simple moreover.

Preferably, the device also comprises a second bearing fixedly arranged on the main shaft, and the planet carrier is fixed with the outer ring of the second bearing; the sun gear comprises a mounting part and a gear part, and the mounting part extends out of the gear ring cover plate and is fixedly connected with the rotor.

Preferably, the end face of the gear ring cover plate is provided with a first mounting opening, the mounting portion is in sealing fit with the inner side face of the first mounting opening, the left end face of the mounting portion is attached to the end face of the rotor, and the mounting portion and the rotor are fixedly connected through a first bolt. The installation department adopts this kind of mode to be connected advantage to lie in with the rotor, and is fixed firm, convenient to detach simultaneously, and the binding face of installation department and rotor is great, so stability is better, has increased the intensity of rotor simultaneously, can prevent that the rotor from taking place to rock, and annular installation face can guarantee that the rotor can not take place to rock moreover, and stability is better, and the life-span is longer.

Preferably, a second bolt is installed on the gear ring of the speed reducer, the second bolt is sequentially connected with the gear ring of the speed reducer, the gear ring cover plate and the right stator, and the second bolt is arranged on the outer edge of the gear ring of the speed reducer. The reduction gear ring gear is fixed with right stator as the shell of reduction gear for reduction gear shell and right stator become fixed an organic whole structure, through structural design, only fix through setting up the bolt and make the installation more convenient, the maintenance and the maintenance in the later stage of being convenient for.

Preferably, a brake disc is arranged between the planet carrier cover plate and the inner wall of the rim, and the brake disc, the planet carrier cover plate, the planet carrier and the rim rotate synchronously. The brake disc setting of this kind of mode has simple to operate's characteristics in the inside of rim, and the brake disc can regard as the reinforcement to use moreover, avoids rim and reduction gear direct contact, has increased the intensity of whole device.

Preferably, the brake disc is an annular brake disc, and the brake disc is fixedly arranged at the left end of the wheel rim.

Preferably, a brake is further mounted in the rim, and the brake is matched with the brake disc.

Preferably, an automobile is provided with the above-described drive-brake integrated electric wheel integrating the disc-type in-wheel motor and the speed reducer.

Due to the adoption of the technical scheme, the invention has the remarkable technical effects that:

firstly, the motor, the speed reducer and the brake are creatively integrated in the rim, so that the compactness of the whole structure is better, the occupied space is small, the space utilization rate is high, and the cost and the space of the automobile are saved. The in-wheel motor who adopts in this scheme simultaneously is disc in-wheel motor, and disc motor has thickness little, and the characteristics that the moment of torsion of output is big, and disc motor in this patent has compact structure moreover, efficient characteristics, is applicable to all kinds of motorcycle types that need match in-wheel motor.

In order to match the rim and facilitate the installation and maintenance of the rotor, the stator of the disc motor is divided into a left stator and a right stator, so that the convenience in disassembly and assembly with the rest parts is realized. The planet wheel speed reducer can be designed into different structures and different transmission ratios according to requirements, so that the requirements of torque and rotating speed of vehicle transmission are met; the sun gear and the rotor in the planet gear reducer are fixed with each other, so that the accuracy of speed reduction is ensured. Adopt brake disc and planet carrier and rim direct fit, make things convenient for the transmission of braking torque, the sun gear can play the supporting role to the stator simultaneously to guarantee the structure of rotor, the deformation phenomenon can not appear. By adopting the traditional brake disc or the annular brake disc, the common brake design scheme of the existing vehicle type can be utilized, and the brake can be matched with common front calipers, IPBs, EPBs and the like, and has extremely strong modularization characteristic; the hub motor, the planet wheel reducer and the braking device are integrated in the rim to form an electric wheel integrating driving and braking, so that a customer can conveniently perform modular assembly.

Drawings

FIG. 1 is a schematic view of the inside profile structure of the devices of examples 1 and 2.

FIG. 2 is a schematic diagram of the outer configuration of the apparatus of examples 1 and 2.

FIG. 3 is a cross-sectional view of the apparatus of example 1.

FIG. 4 is a schematic diagram of the inside profile structure of the devices of examples 3 and 4.

Fig. 5 is a cross-sectional view of fig. 4.

Reference numerals in the drawings correspond to technical names: 1-disk motor, 2-reduction gear, 3-brake disc, 4-main shaft, 5-rotor, 6-rim, 7-wheel hub bearing unit, 8-left stator, 9-right stator, 10-installation cavity, 11-sun gear, 12-planet carrier, 13-planet gear, 14-ring gear cover plate, 15-reduction gear ring gear, 16-planet carrier cover plate, 17-second bearing, 18-installation part, 19-gear part, 20-first installation port, 21-first bolt, 22-second bolt, 23-brake, 24-water channel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the left and right orientations in the description are based on the sectional view.

Example 1

As shown in fig. 1 to 3, the driving and braking integrated electric wheel integrating a disc type hub motor and a speed reducer comprises an external rim 6, a disc type motor 1, a speed reducer 2 and a brake disc 3 which are installed in the rim 6, and further comprises a main shaft 4, wherein the disc type motor 1 comprises a rotor 5 and a stator assembly, the rotor 5 is connected with the main shaft 4 and rotates around the main shaft 4, and the speed reducer 2 is installed on the main shaft 4; rotor 5 is connected with the input of reduction gear 2 and drives reduction gear 2 work, and rim 6 is connected with the 2 output of reduction gear and realizes rotating, and stator module circular telegram drives rotor 5 and rotates and drive reduction gear 2 operation, and the output of reduction gear 2 drives rim 6 and rotates. The left end in this embodiment is the end of the rim 6 near the inner side, and the right end is the end of the rim 6 near the outer side. Wherein the permanent magnets 36 are evenly distributed on the transverse cross section of the rotor 5, i.e. on the left and right end faces of the rotor 5; the coils are respectively distributed uniformly over the transverse cross-section of the stator.

The hub bearing unit 7 is mounted on the main shaft 4, and the hub bearing unit 7 corresponds to a bearing unit, but the hub bearing unit 7 can bear a large load, and the hub bearing unit 7 is a conventional one. The main shaft 4 of the support disc motor 1 is fixedly connected with the non-rotating part of the hub bearing unit 7. The left end of wheel hub bearing unit 7 is provided with assembly groove 31, and wheel hub bearing unit 7 includes the pilot hole of middle part and 4 coaxial lines of main shaft, and the left end of main shaft 4 is provided with cassette 32, and main shaft 4 and pilot hole interference fit installation, cassette 32 fall into in assembly groove 31. In actual operation, the main shaft 4 and the inner ring of the hub bearing unit 7 are not rotated, and the outer ring of the hub bearing unit 7 is rotated.

The rotor 5 is mounted on the rotating portion of the hub bearing unit 7, that is, mounted on the outer ring of the hub bearing and rotates synchronously with the outer ring of the hub bearing unit 7, in this embodiment, the outer ring of the hub bearing unit 7 is fixedly connected with the rotor 5 through bolts. The stator assembly comprises a left stator 8 and a right stator 9, the left stator 8 is fixedly connected with the right stator 9, a mounting cavity 10 for placing the rotor 5 is formed between the left stator 8 and the right stator 9, the left stator 8 is fixedly connected with the hub bearing unit 7, the specific inner rings of the left stator 8 and the hub bearing unit 7 are fixed, and the specific inner rings are fixed through fixing bolts 41; so that the stator assembly of the disc motor 1 does not rotate. The left stator 8 is fixed with the axle or knuckle of the vehicle or the chassis of the vehicle and does not rotate.

For better installation left stator 8 and right stator 9, left stator 8 and right stator 9 link firmly as the connecting piece through the bolt, the limit portion of left stator 8 and right stator 9 all includes the assembly portion 25 of perpendicular terminal surface, prop up installation cavity 10 that is used for installing rotor 5 between the assembly portion 25, it is very obvious that assembly portion 25 arranges along the limit portion ring shape of left stator 8 and right stator 9, install third bolt 26 on the assembly portion 25, all seted up the screw hole on the terminal surface of assembly portion 25 of left stator 8 and right stator 9, third bolt 26 is through cooperating left stator 8 and right stator 9 fixed connection with the screw hole on the assembly portion 25, third bolt 26 is evenly arranged along the circumferencial direction, thereby guarantee that left stator 8 and right stator 9 rotate the time more steadily.

The planetary reducer 2 has the advantages of small volume, light weight, high bearing capacity, long service life, stable operation and low noise. Has the unique characteristics of power splitting and multi-tooth meshing. Therefore, the speed reducer 2 in this embodiment is a planetary speed reducer 2, the planetary speed reducer 2 includes a sun gear 11, a planet carrier 12, a planet gear 13 mounted on the planet carrier 12, a ring gear cover plate 14, a speed reducer ring gear 15, and a planet carrier cover plate 16, the sun gear 11 is meshed with the planet gear 13, in order to match the design, the sun gear 11 is fixedly connected with the rotor 5 in the technical scheme, and the method has the advantages of ensuring the response speed of the sun gear 11, ensuring the reduction ratio of the speed reducer 2, and achieving better transmission torque.

The reducer gear ring 15 and the gear ring cover plate 14 are fixedly connected with the stator assembly, and the planet carrier 12 and the planet carrier cover plate 16 are fixedly connected with the rim 6, so that the transmission of braking force can be facilitated, and the timeliness and the accuracy of braking can be ensured; the rotor 5 rotates to drive the sun wheel 11 to rotate synchronously, the sun wheel 11 is meshed with the planet wheel 13 to drive the planet carrier 12 to rotate, and the planet carrier 12 drives the rim 6 to rotate synchronously to achieve the purpose of driving the wheel to rotate.

The planetary gear set further comprises a second bearing 17 fixedly installed on the main shaft 4, and the second bearing 17 is arranged at the right end of the main shaft 4 and used for supporting the planetary carrier 12. The planet carrier 12 is fixed with the outer ring of the second bearing 17, and the fixing mode in the embodiment adopts the interference fit mode of the planet carrier 12 and the outer ring of the second bearing 17 for fixing; the main shaft 4 is fixedly connected with the inner ring of the second bearing 17, and in the embodiment, the second bearing 17 is fixed by adopting an elastic check ring and an inter-shaft mode. The sun gear 11 comprises a mounting portion 18 and a gear portion 19, the mounting portion 18 extending outside the ring gear cover 14 and being fixedly connected to the rotor 5.

The middle part of the gear ring cover plate 14 is provided with a first mounting opening 20, the mounting part 18 is in sealing fit with the inner side surface of the first mounting opening 20, the left end surface of the mounting part 18 is attached to the end surface of the rotor 5, and the mounting part 18 and the rotor 5 are fixedly connected through a first bolt 21. The mounting part 18 is integrated with the gear part 19, and an annular sealing ring is mounted on the annular side surface of the mounting part 18 and used for forming a seal with the gear ring cover plate 14, so that foreign matters are prevented from entering the planetary speed reducer 2; a sealing structure, specifically, an annular sealing ring is arranged on the right end face of the rotor 5, and is arranged between the left end face of the mounting portion 18 and the right end face, i.e., the contact face, of the rotor 5. And sun gear 11 cover is established on main shaft 4, is provided with the sealing washer between sun gear 11 and the main shaft 4, prevents that sun gear 11 and main shaft 4 direct contact from taking place wearing and tearing and noise, can guarantee the stability of main shaft 4 moreover. In the embodiment, the axis of the planetary reducer 2 is coincident with the axis of the main shaft 4 and is annularly distributed along the main shaft 4. In this embodiment, the first bolt 21 passes through the mounting portion 18 and is matched with a threaded hole formed in the rotor 5, so that the reliability of connection between the rotor 5 and the sun gear 11 is ensured. It should be noted that the middle of the right stator 9 is provided with a circular channel 27, and the mounting portion 18 is fixedly mounted on the end face of the rotor 5 through the channel 27. In this embodiment, it is obvious that the mounting portion 18 needs to extend out of the ring gear cover plate 14, i.e. to the left of the ring gear cover plate 14 in the drawing, so that the ring gear cover plate 14 is an annular cover plate with a circular hole in the middle, and the specific size and shape of the mounting portion 18 are determined by the shape and size of the space enclosed by the right end face of the rotor 5, the channel 27 in the middle of the right stator 9, the inner ring of the ring gear cover plate 14 and the main shaft 4.

The gear ring cover plate 14 is placed between the gear ring 15 of the speed reducer and the right stator 9, the right end face of the gear ring cover plate 14 is attached to the left end face of the gear ring 15 of the speed reducer, the left end face of the gear ring cover plate 14 is attached to the right end face of the right stator 9, and the gear ring cover plate 14 is fixedly connected with the right stator 9 and the gear ring 15 of the speed reducer. The reducer gear ring 15 is provided with a second bolt 22, the second bolt 22 is sequentially connected with the reducer gear ring 15, the gear ring cover plate 14 and the right stator 9, and the second bolt 22 is arranged on the outer edge of the reducer gear ring. The right side surface of the gear ring cover plate 14 is in sealing fit with the gear ring 15 of the speed reducer through a sealing ring, and the left end surface of the gear ring cover plate 14 is in sealing fit with the right stator 9 through a sealing ring. The reducer gear ring 15, the planet carrier cover plate 16 and the gear ring cover plate 14 enclose a transmission space of the planetary reducer 2, the planet carrier cover plate 16 is embedded on the inner ring surface at the right end of the reducer gear ring 15, and the planet carrier cover plate 16 and the inner wall of the reducer gear ring 15 are sealed by arranging a sealing ring; the lateral wall of planet carrier 12 and reduction gear ring 15's inner wall sealing fit, the fixed installation axle 28 that is provided with on planet carrier 12, be equipped with planet wheel 13 on the installation axle 28, planet wheel 13 and reduction gear ring inner wall 15's tooth and sun gear 11's tooth meshing, because reduction gear ring 15 does not take place to rotate, so during operation planet wheel 13 drives planet carrier 12 and rotates the function that realizes reduction gear 2, planet carrier 12 includes the output shaft, the output shaft is coaxial with main shaft 4. Planet carrier apron 16 sets up the right-hand member at the output shaft, brake disc 3 is installed between planet carrier apron 16 and the 6 inner walls of rim, brake disc 3, planet carrier apron 16, planet carrier 12 and the synchronous rotation of rim 6, fix above-mentioned part through the mode that sets up fourth bolt 30 in this embodiment, as shown in the figure, the right-hand member that the fourth bolt 30 passed rim 6 in proper order, brake disc 3, planet carrier apron 16 is fixed on planet carrier 12, thereby realize that planet carrier 12 drives rim 6, 3 synchronous rotations of brake disc. Wherein the middle part of brake disc 3 is provided with strengthens the step, and the left surface laminating of step is on planet carrier apron 16, and the right flank laminating is on the inner wall of rim 6 right-hand member to guarantee that compact structure can not take place to rock, reduce or eliminate device's longitudinal shear force. The brake 23 is further installed in the rim 6, the brake 23 is matched with the brake disc 3, the installation frame 40 extends from the outer side face of the right end of the speed reducer gear ring 15, and the brake 23 is installed on the installation frame 40.

In order to ensure the heat dissipation performance of the device, water channels 24 are arranged on the left stator 8 and the right stator 9 of the motor, and the water channels 24 are used for installing water pipes to ensure that the left stator 8 and the right stator 9 dissipate heat in time.

The working process of the device is that, the coil of the left stator 8 and the coil of the right stator 9 are electrified to drive the rotor 5 to rotate, the rotor 5 drives the sun wheel 11 to synchronously rotate, the sun wheel 11 drives the planet carrier 12 to rotate in a speed reducing way through meshing transmission with the planet wheel 13, the planet carrier 12 drives the brake disc 3 and the rim 6 to synchronously rotate, the function of driving the wheel to rotate is realized, when the speed is required to be reduced, the brake 23 acts on the brake disc, the brake disc drives the planet carrier 12 in a speed reducing way, the rotating speeds of the rim 6 and the sun wheel 11 are reduced, and the purpose of braking speed reduction is realized.

Example 2

As shown in fig. 1 to 5, the present embodiment is different from embodiment 1 in that the brake disk 3 is a ring-shaped brake disk 301, the ring-shaped brake disk 301 is mounted on the left end of the rim 6 and fixed to the left end surface of the rim 6 by bolts, and the brake 23 is fixedly mounted on the frame or the knuckle by fixing bolts.

Example 3

As shown in fig. 1 to 5, the present embodiment differs from embodiment 1 in that the brake 23 is an inner caliper brake 23, in which a disc-type in-wheel motor and a reduction gear are integrated into a driving and braking integrated electric wheel.

Example 4

An automobile is provided with a driving and braking integrated electric wheel of an integrated disc type hub motor and a speed reducer of embodiment 1, embodiment 2 or embodiment 3.

In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The integrated disc type hub motor and speed reducer driving and braking integrated electric wheel comprises an external rim (6), and a disc type motor (1), a speed reducer (2) and a brake disc (3) which are arranged in the rim (6), and is characterized in that: the disc type motor (1) comprises a rotor (5) and a stator assembly, the rotor (5) is connected with the main shaft (4) and rotates around the main shaft (4), and the speed reducer (2) is installed on the main shaft (4); the rotor (5) is connected with the input end of the speed reducer (2) to drive the speed reducer (2) to work, the rim (6) is connected with the output end of the speed reducer (2) to rotate, the stator assembly is electrified to drive the rotor (5) to rotate to drive the speed reducer (2) to operate, and the output end of the speed reducer (2) drives the rim (6) to rotate; the stator assembly comprises a left stator (8) and a right stator (9), the left stator (8) is fixedly connected with the right stator (9), an installation cavity (10) for placing the rotor (5) is formed between the left stator (8) and the right stator (9), the left stator (8) is fixedly connected with the hub bearing unit (7), and permanent magnets (36) are uniformly arranged on the rotor (5); a hub bearing unit (7) is mounted on a main shaft (4), the main shaft (4) is fixedly connected with a non-rotating part of the hub bearing unit (7), a rotor (5) is mounted on a rotating part of the hub bearing unit (7), a speed reducer (2) is a planetary speed reducer (2) and comprises a sun gear (11), a planet carrier (12), a planet gear (13) mounted on the planet carrier (12), a gear ring cover plate (14), a speed reducer gear ring (15) and a planet carrier cover plate (16), the sun gear (11) is meshed with the planet gear (13), the sun gear (11) is fixedly connected with the rotor (5), the speed reducer gear ring (15) and the gear ring cover plate (14) are fixedly connected with a stator component, and the planet carrier (12) and the planet carrier cover plate (16) are fixedly connected with a rim (6); the rotor (5) rotates to drive the sun wheel (11) to synchronously rotate, the sun wheel (11) is meshed with the planet wheel (13) to drive the planet carrier (12) to rotate, and the planet carrier (12) drives the rim (6) to synchronously rotate; the brake disc (3) is arranged between the planet carrier cover plate (16) and the inner wall of the rim (6), and the brake disc (3), the planet carrier cover plate (16), the planet carrier (12) and the rim (6) synchronously rotate; the sun gear (11) comprises a mounting part (18) and a gear part (19), the mounting part (18) extends out of the gear ring cover plate (14) and is fixedly connected with the rotor (5), a first mounting opening (20) is formed in the end face of the gear ring cover plate (14), the mounting part (18) is in sealing fit with the inner side face of the first mounting opening (20), the left end face of the mounting part (18) is attached to the end face of the rotor (5), the mounting part (18) is fixedly connected with the rotor (5) through a first bolt (21), the gear ring cover plate (14) is placed between the speed reducer gear ring (15) and the right stator (9), the right end face of the gear ring cover plate (14) is attached to the left end face of the speed reducer gear ring (15), the left end face of the gear ring cover plate (14) is attached to the right end face of the right stator (9), and the gear ring cover plate (14) is fixedly connected with the right stator (9) and the speed reducer gear ring (15); a second bolt (22) is installed on the gear ring (15) of the speed reducer, the second bolt (22) is sequentially connected with the gear ring (15) of the speed reducer, the gear ring cover plate (14) and the right stator (9), and the second bolt (22) is arranged on the outer edge of the gear ring of the speed reducer; the brake disc (3) is an annular brake disc (301), and the brake disc (3) is fixedly arranged at the left end of the rim (6).

2. The drive-brake integrated electric wheel integrating the disc-type hub motor and the speed reducer according to claim 1, wherein: the brake further comprises a brake (23), and the brake (23) is matched with the brake disc (3).

3. An automobile, characterized in that: a driving and braking integrated electric wheel provided with an integrated disc type hub motor and a speed reducer according to any one of claims 1 to 2.