CN210111708U

CN210111708U - Axial magnetic field hub motor and driving system

Info

Publication number: CN210111708U
Application number: CN201921419530.4U
Authority: CN
Inventors: 宋宗霖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-02-21
Anticipated expiration: 2029-08-29

Abstract

The utility model provides an axial magnetic field in-wheel motor and driving system, relate to vehicle drive technical field, solved the technical problem that traditional in-wheel motor structure is comparatively complicated and efficiency is lower among the prior art, axial magnetic field in-wheel motor includes stator, rotor and fixed axle, the fixed axle passes the rotor and with the rotor is rotatable to be connected, the rotor is inside to be provided with the cavity, the stator sets up in the cavity and connects and set up on the fixed axle, the both sides of stator are provided with the winding coil, the position relative with the winding coil on the inner wall of rotor is provided with the permanent magnet; the driving system comprises an accelerator operating device, a gear operating device, a vehicle control unit, an electronic differential, a motor controller and the axial magnetic field hub motor; the axial magnetic field hub motor of the utility model has simple structure, small volume, large magnetic flux area and high efficiency; the driving system is sensitive in response, accurate in control and stable in running.

Description

Axial magnetic field hub motor and driving system

Technical Field

The utility model relates to a vehicle drive technical field, concretely relates to axial magnetic field in-wheel motor and actuating system.

Background

The existing new energy vehicle mainly depends on a motor to drive the vehicle to run through a gearbox and then a transmission mechanism in the running process, the existing driving motor is mainly divided into an alternating current asynchronous motor, a direct current brushless motor, a brushless synchronous motor and the like as a power source of the vehicle, the schemes often have the defects of large volume, low efficiency, poor heat dissipation performance and the like due to the structure and the effect principle of the motor, the transmission and the related transmission mechanism are required to be matched to drive the vehicle to run, the power cannot be directly applied to wheels, and the structure is often complex.

At present, a plurality of hub motors appear in the market, some adopt conventional permanent magnet motors to combine speed change mechanism and wheel design in an organic whole, some then adopt conventional motor to directly drive the wheel, although these hub motors have reduced the volume to a certain extent, still have the problem that the structure is comparatively complicated, efficiency is lower and heat dispersion is relatively poor.

SUMMERY OF THE UTILITY MODEL

One of the objectives of the present invention is to provide an axial magnetic field hub motor to solve the technical problems of complex structure and low efficiency of the conventional hub motor in the prior art; the utility model provides a plurality of technical effects that the preferred technical scheme in a plurality of technical schemes can produce (the rotor is rotatably connected with the fixed shaft through the bearing and the thrust bearing, which is convenient for rotating, one side of the rotor outer wall provided with the thrust bearing can be detachably provided with the brake disc, which is matched with the brake block, on the basis of ensuring the stable structure, the brake can be effectively carried out, the first oil seal and the second oil seal can effectively prevent external impurities from entering the bearing, the air cooling heat dissipation device drives the turbulent flow fin to rotate through the rotation of the rotor, which is convenient for the heat dissipation of the motor, the water cooling heat dissipation device comprises the heat dissipation coil pipe, which can carry out heat exchange, further improves the heat dissipation effect of the motor, the rotating speed sensor and the temperature sensor can detect the rotating speed and the motor temperature of the output end of the motor, which is, and can rotate synchronously with the hub, etc.); see below for details.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of axial magnetic field in-wheel motor, including stator, rotor and fixed axle, wherein: the fixed shaft penetrates through the rotor and is rotatably connected with the rotor, a cavity is formed in the rotor, the stator is arranged in the cavity and is connected and arranged on the fixed shaft, winding coils are arranged on two sides of the stator, and permanent magnets are arranged on the inner wall of the rotor and opposite to the winding coils.

Preferably, a partial section of the fixed shaft is disposed in the cavity, both ends of the fixed shaft are disposed outside the rotor, one side of the rotor is rotatably connected with the fixed shaft through a bearing, and the other side of the rotor is rotatably connected with the fixed shaft through a thrust bearing.

Preferably, a brake disc is detachably arranged on one side of the outer wall of the rotor, which is provided with the thrust bearing.

Preferably, a first oil seal is connected and arranged on the side surface of the bearing, and a second oil seal is connected and arranged on the side surface of the thrust bearing.

Preferably, the axial magnetic field in-wheel motor further comprises a heat sink, the heat sink comprises an air-cooled heat sink, wherein: the air-cooled heat dissipation device comprises at least two turbulence fins, and the turbulence fins are circumferentially arranged on the inner wall of the rotor.

Preferably, the heat dissipation device further comprises a water-cooling heat dissipation device, the water-cooling heat dissipation device comprises a heat dissipation coil, a water inlet pipe and a water outlet pipe, wherein: the heat dissipation coil pipe sets up in the cavity, the play water end of inlet tube is followed the terminal surface of fixed axle inserts extremely in the cavity with heat dissipation coil pipe's the end of intaking links to each other, the end of intaking of outlet pipe is followed the terminal surface of fixed axle penetrates extremely in the cavity with heat dissipation coil pipe's play water end links to each other.

Preferably, the inside of cavity is provided with the operating mode sensor, the operating mode sensor includes speed sensor and temperature sensor, speed sensor can detect rotor speed, temperature sensor can detect the temperature in the cavity.

Preferably, the axial magnetic field hub motor further comprises a hub, the rotor is arranged inside the hub and detachably connected with the hub, and the hub and the rotor synchronously rotate relative to the fixed shaft.

The utility model provides a pair of axial magnetic field in-wheel motor has following beneficial effect at least:

the axial magnetic field hub motor comprises a stator, a rotor and a fixed shaft, wherein the fixed shaft penetrates through the rotor and is rotatably connected with the rotor, and the rotor can rotate relative to the fixed shaft and is used for outputting power; the rotor is internally provided with a cavity, the stator is arranged in the cavity and is connected and arranged on the fixed shaft, the rotor has the function of accommodating the stator, and the fixed shaft is used for supporting the stator and the rotor; the two sides of the stator are provided with winding coils, the inner wall of the rotor is provided with permanent magnets at positions opposite to the winding coils, and the winding coils are arranged on the two sides of the stator and matched with the corresponding permanent magnets, so that the efficiency can be effectively improved; axial magnetic field in-wheel motor adopts axial magnetic field, the stator both sides all are provided with the winding coil, and the position homogeneous phase that rotor inner wall and winding coil correspond is to being provided with the permanent magnet, and this structure compares prior art simple structure, and is small, can effectively reduce the middle energy consumption among the traditional motor drive process, and the magnetic flow area is big simultaneously, efficient to there is the clearance between the both sides of stator all and the rotor, and heat dispersion is better.

Another object of the present invention is to provide a driving system to solve the technical problems of complex structure and low efficiency of the transmission driving device of the electric vehicle existing in the prior art; the steering angle sensor can timely detect steering information when the vehicle turns and transmit the steering information to the vehicle control unit, and the vehicle control unit respectively timely adjusts the rotating speed of the output ends of the two axial magnetic field hub motors through an electronic differential and a motor controller, so that the vehicle runs more stably and the like; see below for details.

the utility model provides a pair of driving system, including throttle controlling device, gear controlling device, vehicle control unit, electronic differential, machine controller and axial magnetic field wheel hub motor, wherein: the accelerator operating device, the gear operating device and the electronic differential are all electrically connected with the whole vehicle controller; the electronic differential is electrically connected with the motor controller, and the motor controller is electrically connected with the axial magnetic field hub motor; the number of the axial magnetic field hub motors is at least two, and each axial magnetic field hub motor is in transmission connection with a corresponding wheel.

Preferably, the number of the axial magnetic field hub motors is two, and the two axial magnetic field hub motors are respectively in transmission connection with the left rear wheel and the right rear wheel; the driving system further comprises a steering angle sensor, the steering angle sensor is electrically connected with the whole vehicle controller, the steering angle sensor can transmit detected vehicle steering information to the whole vehicle controller, and the rotating speed of the output ends of the two axial magnetic field hub motors is adjusted through the electronic differential and the motor controller.

The utility model provides a pair of actuating system has following beneficial effect at least:

the driving system comprises an accelerator operating device, a gear operating device, a whole vehicle controller, an electronic differential, a motor controller and axial magnetic field hub motors, wherein the accelerator operating device, the gear operating device and the electronic differential are all electrically connected with the whole vehicle controller; the number of the axial magnetic field hub motors is at least two, each axial magnetic field hub motor is in transmission connection with a corresponding vehicle, the axial magnetic field hub motors provide kinetic energy for the rotation of the wheels, and the driving system can form two-wheel drive or four-wheel drive according to different numbers of axial magnetic field hub motors; the driving system of the utility model directly drives the wheel to rotate through the axial magnetic field hub motor, compared with the traditional driving device, the driving system has simple structure, high efficiency, sensitive response and accurate control, and can effectively reduce the intermediate energy consumption in the transmission process of the traditional driving device; the rotating speed of the output end of the hub motor of the corresponding axial magnetic field in the running process of the vehicle can be timely adjusted through the electronic differential and the motor controller, so that the running process is more stable; the axial magnetic field hub motor with different quantity can form two-wheel drive or four-wheel drive, and is more diversified.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of an axial magnetic field hub motor of the present invention;

FIG. 2 is a schematic view of the rotor and the fixed shaft of the present invention;

FIG. 3 is a schematic structural view of an embodiment of the present invention with a heat dissipation device;

fig. 4 is a schematic view of the winding coil structure on both sides of the stator of the present invention;

FIG. 5 is a schematic view of the structure of the permanent magnet on the inner wall of the rotor of the present invention;

fig. 6 is a schematic diagram of the driving system of the present invention.

Reference numerals

1-axial magnetic field hub motor; 11-a stator; 111-winding coils; 12-a rotor; 121-a cavity; 13-a fixed shaft; 131-a thrust bearing; 132-a second oil seal; 133-a first oil seal; 134-a bearing; 14-a permanent magnet; 15-a working condition sensor; 16-a heat sink; 161-water cooling heat sink; 1611-a water inlet pipe; 1612-water outlet pipe; 1613-heat-dissipating coil; 162-air-cooled heat sink; 17-a brake disc; 2-a motor controller; 3-an electronic differential; 4-vehicle control unit; 5-gear operating means; 6-a steering angle sensor; 7-accelerator operating device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1:

the utility model provides an axial magnetic field in-wheel motor, as figure 1 the utility model discloses axial magnetic field in-wheel motor schematic structure diagram is shown, axial magnetic field in-wheel motor includes stator 11, rotor 12 and fixed axle 13, wherein: the fixed shaft 13 penetrates through the rotor 12 and is rotatably connected with the rotor 12, a cavity 121 is formed in the rotor 12, the stator 11 is arranged in the cavity 121 and is connected and arranged on the fixed shaft 13, winding coils 111 are arranged on two sides of the stator 11, the stator 11 and the fixed shaft 13 are integrally arranged, and the winding coils 111 are annularly arranged on the side face of the stator 11; a permanent magnet 14 is arranged on the inner wall of the rotor 12 at a position opposite to the winding coil 111; a gap exists between the permanent magnet 14 and the winding coil 111; as shown in fig. 4, the winding coil structure diagram of the stator of the present invention is shown, the winding coils 111 are distributed in a ring shape, and the winding coils 111 are three-phase electromagnetic coils; as shown in fig. 5, the permanent magnet structure diagram on the inner wall of the rotor of the present invention is shown, the permanent magnet 14 is annular and the magnetic poles are sequentially and alternately arranged, and the magnetic pole of the permanent magnet 14 is arranged opposite to the winding coil 111.

During the use, winding coil 111 circular telegram, rotor 12 is under permanent magnet 14 and winding coil 111's effect, for 13 axial rotations of fixed axle, axial magnetic field in-wheel motor through set up three-phase electromagnetic coil at stator 11 both sides face, cooperates two corresponding permanent magnet 14, compares the in-wheel motor among the prior art, simple structure, and is small, the effectual middle energy consumption that has reduced among the traditional motor drive process to the magnetic flow area is big, and is efficient, and the clearance between permanent magnet 14 and the stator 11 is convenient for simultaneously axial magnetic field in-wheel motor dispels the heat.

As an alternative embodiment, as shown in fig. 2, a schematic view of the connection between the rotor and the stationary shaft of the present invention, a partial section of the stationary shaft 13 is disposed in the cavity 121, two ends of the stationary shaft 13 are disposed outside the rotor 12, one side of the rotor 12 is rotatably connected to the stationary shaft 13 through a bearing 134, and the bearing 134 is a ball bearing; the other side of the rotor 12 is rotatably coupled to the fixed shaft 13 by a thrust bearing 131, and the thrust bearing 131 is configured as a thrust ball bearing or a thrust ball bearing.

As an alternative embodiment, as shown in fig. 1, a brake disc 17 is detachably disposed on one side of the outer wall of the rotor 12, on which the thrust bearing 131 is disposed; preferably, the brake disc 17 is removably connected to the rotor 12 by means of bolts; during braking, the brake pads are pressed against the brake disc 17, thereby reducing the rotational speed of the brake disc 17 and thus the rotational speed of the rotor 12.

As an alternative embodiment, as shown in fig. 2, a first oil seal 133 is connected to the side of the bearing 134, and a second oil seal 132 is connected to the side of the thrust bearing 131; the first oil seal 133 is arranged on the outer side surface of the bearing 134, the second oil seal 132 is arranged on the outer side surface of the thrust bearing 131, and the first oil seal 133 and the second oil seal 132 can effectively prevent impurities from entering and prolong the service life.

As an optional implementation manner, as shown in fig. 3, the structure schematic diagram of an implementation manner with a heat dissipation device of the present invention is shown, the axial magnetic field in-wheel motor further includes a heat dissipation device 16, the heat dissipation device 16 includes an air cooling heat dissipation device 162, wherein: the air-cooled heat dissipation device 162 comprises at least two spoiler fins, wherein the spoiler fins are provided as spoilers; all the turbulence fins are circumferentially arranged on the inner wall of the rotor 12, the two opposite inner walls of the rotor 12 are both provided with the turbulence fins, and the turbulence fins are arranged at positions close to the winding coil 111; when the rotor 12 rotates, the fins rotate to accelerate the air flow in the cavity 121, thereby improving the heat dissipation effect; preferably, the larger the size of the spoiler fin is, the better the heat dissipation effect is, provided that the space of the cavity 121 allows.

As an alternative embodiment, as shown in fig. 3, the heat sink 16 further includes a water-cooled heat sink 161, the water-cooled heat sink 161 includes a heat-dissipating coil 1613, an inlet pipe 1611 and an outlet pipe 1612, wherein: the heat dissipation coil 1613 is arranged in the cavity 121, the water outlet end of the water inlet pipe 1611 is inserted into the cavity 121 along the end surface of the fixed shaft 13 and connected with the water inlet end of the heat dissipation coil 1613, and the water inlet end of the water outlet pipe 1612 penetrates into the cavity 121 along the end surface of the fixed shaft 13 and connected with the water outlet end of the heat dissipation coil 1613; the terminal surface of fixed axle 113 is provided with the passageway along the axial, and fixed axle 113 sets up and is provided with first trompil and second trompil on the inside district's section lateral wall of cavity 121, and cavity 121 passes through first trompil with the second trompil with the passageway is linked together, and the play water end of inlet tube 1611 passes in proper order the passageway with first trompil links to each other with heat dissipation coil 1613's the end of intaking, and the end of intaking of outlet pipe 1612 passes in proper order the through-hole with the second trompil links to each other with heat dissipation coil 1613's play water end, and the coolant liquid in the heat dissipation coil 1613 can carry out the heat exchange with the outside of.

Optionally, the water inlet end of the water inlet pipe 1611 and the water outlet end of the water outlet pipe 1612 are both communicated with a heat dissipation water tank, the heat dissipation water tank comprises a water tank and a heat dissipation fan which are detachably connected, the heat dissipation fan is electrically connected with the vehicle control unit, and the cold cutting fluid can circularly flow among the water tank, the water inlet pipe 1611, the heat dissipation coil 1613 and the water outlet pipe 1612.

As an optional implementation manner, as shown in fig. 1, an operating condition sensor 15 is disposed inside the cavity 121, the operating condition sensor 15 includes a rotation speed sensor and a temperature sensor, the rotation speed sensor can detect the rotation speed of the rotor 12, the temperature sensor can detect the temperature inside the cavity 121, and both the rotation speed sensor and the temperature sensor are electrically connected to the vehicle controller.

As an optional implementation manner, the axial magnetic field hub motor further includes a hub, the rotor 12 is disposed inside the hub and detachably connected with the hub, the hub is detachably connected with one side of the rotor 12 provided with the bearing 134 through a bolt, and the hub and the rotor 12 rotate synchronously relative to the fixed shaft 13.

Example 2:

the utility model provides a driving system, as fig. 6 the utility model discloses driving system schematic structure diagram is shown, driving system includes throttle controlling device 7, gear controlling device 5, vehicle control unit 4, electronic differential 3, machine controller 2 and axial magnetic field in-wheel motor 1, wherein: the accelerator operating device 7, the gear operating device 5 and the electronic differential 3 are all electrically connected with the vehicle control unit 4, the gear operating device 5 is set to be a gear shifting handle or a gear shifting knob, and the gear shifting handle comprises a reverse gear and a forward gear; the accelerator control device 7 is an electronic accelerator pedal, the electronic accelerator pedal comprises a pedal body, a position sensor is arranged on the pedal body and electrically connected with the vehicle control unit 4, a driver treads the pedal body in the vehicle running process, the position sensor can acquire position information of the pedal body and transmit the position information to the vehicle control unit 4 in the form of an electric signal, and the vehicle control unit 4 timely adjusts the rotating speed of the two axial magnetic field hub motors 1 through the motor controller 2 so as to timely adjust the vehicle speed in the vehicle running process; the electronic differential mechanism 3 is electrically connected with the motor controller 2, and the motor controller 2 is electrically connected with the axial magnetic field hub motor 1; the number of the axial magnetic field hub motors 1 is at least two, and each axial magnetic field hub motor 1 is in transmission connection with a corresponding wheel; the number of the axial magnetic field hub motors 1 can be two or four, and a front driving system, a rear driving system and a four-wheel driving system can be formed by the transmission connection of different numbers of the axial magnetic field hub motors 1 and different wheels.

As an alternative embodiment, as shown in fig. 6, the number of the axial magnetic field hub motors 1 is two, and the two axial magnetic field hub motors 1 are respectively in transmission connection with the left rear wheel and the right rear wheel to form a rear drive system; the driving system further comprises a steering angle sensor 6, the steering angle sensor 6 is electrically connected with the vehicle control unit 4, the steering angle sensor 6 can transmit detected vehicle steering information to the vehicle control unit 4, and the rotating speed of the output ends of the two axial magnetic field hub motors 1 is adjusted through the electronic differential 3 and the motor controller 2; the steering angle sensor 6 is arranged on a vehicle steering column and can detect the rotating direction and the rotating angle of a vehicle, and preferably, the number of the motor controllers 2 is two and the two motor controllers are respectively and electrically connected with the two axial magnetic field hub motors 1; when the vehicle turns, the steering angle sensor 6 detects the vehicle steering information and transmits the vehicle steering information to the vehicle control unit 4 in the form of an electric signal, and the vehicle control unit 4 respectively adjusts the output ends of the two axial magnetic field hub motors 1 to the corresponding rotating speed through the electronic differential 3 and the two motor controllers 2, so that the vehicle is more stable in the steering process.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An axial magnetic field in-wheel motor, characterized by, includes stator (11), rotor (12) and fixed axle (13), wherein:

the fixed shaft (13) penetrates through the rotor (12) and is rotatably connected with the rotor (12), a cavity (121) is arranged inside the rotor (12), the stator (11) is arranged in the cavity (121) and is connected and arranged on the fixed shaft (13), winding coils (111) are arranged on two sides of the stator (11), and permanent magnets (14) are arranged on the inner wall of the rotor (12) and opposite to the winding coils (111).

2. An axial field hub motor according to claim 1, characterized in that a partial section of the stationary shaft (13) is arranged in the cavity (121), both ends of the stationary shaft (13) are arranged outside the rotor (12), one side of the rotor (12) is rotatably connected to the stationary shaft (13) by means of a bearing (134), and the other side of the rotor (12) is rotatably connected to the stationary shaft (13) by means of a thrust bearing (131).

3. An axial field in-wheel motor according to claim 2, characterized in that the rotor (12) is detachably provided with a brake disc (17) on the side of the outer wall where the thrust bearing (131) is provided.

4. An axial magnetic field in-wheel motor according to claim 2, characterized in that the side of the bearing (134) is connected with a first oil seal (133), and the side of the thrust bearing (131) is connected with a second oil seal (132).

5. The axial field in-wheel electric machine of claim 1, further comprising a heat sink (16), the heat sink (16) comprising an air-cooled heat sink (162), wherein:

the air-cooled heat dissipation device (162) comprises at least two flow disturbing fins, and all the flow disturbing fins are circumferentially arranged on the inner wall of the rotor (12).

6. The axial magnetic field in-wheel motor of claim 5, wherein the heat sink (16) further comprises a water-cooled heat sink (161), the water-cooled heat sink (161) comprising a heat-dissipating coil (1613), an inlet tube (1611) and an outlet tube (1612), wherein:

radiating coil pipe (1613) set up in cavity (121), the play water end of inlet tube (1611) is followed the terminal surface of fixed axle (13) inserts extremely in cavity (121) with the end of intaking of radiating coil pipe (1613) links to each other, the end of intaking of outlet pipe (1612) is followed the terminal surface of fixed axle (13) penetrates extremely in cavity (121) with the play water end of radiating coil pipe (1613) links to each other.

7. The axial magnetic field hub motor according to claim 1, wherein the cavity (121) is internally provided with a condition sensor (15), the condition sensor (15) comprises a rotation speed sensor and a temperature sensor, the rotation speed sensor can detect the rotation speed of the rotor (12), and the temperature sensor can detect the temperature in the cavity (121).

8. An axial field hub motor according to claim 1, further comprising a hub, said rotor (12) being arranged inside and detachably connected to said hub, said hub and said rotor (12) rotating synchronously with respect to said stationary shaft (13).

9. A drive system comprising a throttle operator (7), a gear operator (5), a vehicle control unit (4), an electronic differential (3), a motor controller (2) and an axial field hub motor (1) according to any of claims 1-8, wherein:

the accelerator operating device (7), the gear operating device (5) and the electronic differential (3) are all electrically connected with the vehicle control unit (4);

the electronic differential (3) is electrically connected with the motor controller (2), and the motor controller (2) is electrically connected with the axial magnetic field hub motor (1);

the number of the axial magnetic field hub motors (1) is at least two, and each axial magnetic field hub motor (1) is in transmission connection with a corresponding wheel.

10. The drive system according to claim 9, characterized in that the number of the axial magnetic field hub motors (1) is two, and the two axial magnetic field hub motors (1) are respectively in transmission connection with a left rear wheel and a right rear wheel;

the driving system further comprises a steering angle sensor (6), the steering angle sensor (6) is electrically connected with the whole vehicle controller (4), the steering angle sensor (6) can transmit detected vehicle steering information to the whole vehicle controller (4), and the rotating speed of the output end of the two axial magnetic field hub motors (1) is adjusted through the electronic differential (3) and the motor controller (2).