CN113352873A - Electric wheel with double motors running in parallel, vehicle and manufacturing process - Google Patents
Electric wheel with double motors running in parallel, vehicle and manufacturing process Download PDFInfo
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- CN113352873A CN113352873A CN202110558900.8A CN202110558900A CN113352873A CN 113352873 A CN113352873 A CN 113352873A CN 202110558900 A CN202110558900 A CN 202110558900A CN 113352873 A CN113352873 A CN 113352873A
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- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 230000009467 reduction Effects 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000009194 climbing Effects 0.000 abstract description 6
- 230000001133 acceleration Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- Combustion & Propulsion (AREA)
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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention discloses an electric wheel and a vehicle with double motors running in parallel, which comprises a direct drive motor and a low-torque motor, wherein the direct drive motor is used for directly driving wheels, the direct drive motor and the low-torque motor share a cooling system, the power of the low-torque motor is input into a first-stage planetary reduction mechanism and then is transmitted to a second-stage planetary reduction mechanism, and the power of the second-stage planetary reduction mechanism is coupled to an outer rotor shell through an outer transmission cover, so that the parallel running of the double motors is realized. The low-torque motor transmission chain is not provided with a clutch and follows the direct drive motor when not working; the direct-drive motor adopting the design runs for a long time, the hub motor has a series of advantages brought by direct drive, such as high efficiency, high reliability and quick system response, and the low-torque motor transmission chain provides short-time torque with a larger speed ratio, so that the torque requirements of vehicle climbing and medium-low speed acceleration can be met, and the limitation of the direct-drive motor is solved.
Description
Technical Field
The invention belongs to the technical field of hub motors, and particularly relates to a hub motor with double motors running in parallel.
Background
In the field of vehicle driving, electric driving has become a trend, and conventional electric vehicles all use central driving, use a central motor, and add a gearbox, a transmission shaft and a reducer, and finally output power to wheels. As the name implies, the hub motor is to integrate the power system of the vehicle into the wheel;
the application of the hub motor brings many benefits, especially the direct-drive hub motor has the following advantages:
1. the system has high efficiency, and the wheels are directly driven after the battery supplies power to the motor, so that an intermediate link is removed, and the system has high efficiency;
2. the non-contact transmission is realized, a gear reduction mechanism is not arranged, the possibility of failure is reduced, and the reliability of the system is greatly improved;
3. the degree of freedom of the whole vehicle arrangement is high. The transmission systems are integrated in the wheels, so that great freedom degree is improved for the arrangement of the whole vehicle;
4. is suitable for automatic driving. The motor directly drives the wheels, the response speed is greatly improved, the automatic driving device is very suitable for automatic driving, and meanwhile, good and quick electric braking capability is provided;
however, the direct-drive hub motor has some limitations, and because the in-wheel space is very limited, the motor is difficult to provide very large torque, so that the power requirements of working conditions such as climbing or acceleration of a heavy-duty vehicle at medium and low speeds cannot be met, or when the torque requirements of the vehicle are very large, the hub motor needs to be very large, and the cost is very high.
Therefore, some applications are in research on hub motors with planetary reduction, the hub motors can output larger torque than direct-drive hub motors, but problems are caused, in order to achieve the purpose of reducing the cost of the motors, the speeds of the motors are generally designed to be higher, the fault rate of continuous operation of planetary gears is high, the loss of system efficiency is high, and the operation of high speed and low speed is difficult to be considered by a single motor. In order to solve the problems, an electric wheel with double motors operating in parallel and a vehicle are provided.
Summary of the invention
The invention aims to provide an electric wheel with double motors running in parallel and a vehicle, which aim to solve the problems in the background technology, wherein the electric wheel can utilize one direct-drive motor to continuously run, so that the electric wheel has higher efficiency and reliability, and can also utilize another low-torque motor transmission system to provide larger peak torque when working conditions such as medium-low speed climbing or acceleration and the like are met, so that the power requirement of the vehicle is met, and the low-torque motor transmission system is not provided with a clutch and follows the direct-drive motor when the low-torque motor transmission system does not work.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an electric wheel with double motors running in parallel, which comprises a hub motor assembly and a wheel, wherein the hub motor assembly comprises a direct-drive motor and a low-torque motor, the direct-drive motor is an outer rotor motor, the low-torque motor is an inner rotor motor, and an outer rotor shell of the direct-drive motor is fixedly matched with the wheel and used for directly driving the wheel;
the inner stator of the direct-drive motor comprises a stator bracket and a stator core with a winding, and the stator cores with the winding of the low-torque motor and the direct-drive motor are respectively arranged on the inner side and the outer side of the stator bracket;
the power output shaft of the low-torque motor is connected with a speed reducing assembly, and the output shaft of the speed reducing assembly is coupled with the outer rotor shell through an outer transmission cover, so that the parallel operation of the double motors is realized.
Furthermore, the inner stator of the direct drive motor further comprises a first output shaft and a second output shaft which are fixedly arranged at two ends of the stator support respectively, a second bearing is pressed on the outer side of the first output shaft, a first end cover is arranged on the outer side of the second bearing and fixedly connected with the outer rotor shell, a first bearing cover used for fixing the second bearing is further arranged on the outer end face of the second bearing, and the first bearing cover is fixedly connected with the first end cover;
and the outer side of the output shaft II is pressed with a fifth bearing, one end of the outer rotor shell corresponding to the fifth bearing is turned inwards to form a connecting part, and the connecting part is matched with the outer ring of the fifth bearing.
Further, an output shaft of the speed reducing assembly is mounted in an inner hole of the second output shaft through a fourth bearing;
the outer transmission cover is connected with the end part of the output shaft of the speed reducing assembly through a spline;
the outer transmission cover is fixedly connected with the outer rotor shell.
Furthermore, the speed reduction assembly is a multi-stage planetary speed reduction mechanism with one or more than two stages, and the speed reduction assembly is arranged inside an inner stator of the direct drive motor.
Furthermore, the speed reduction assembly comprises a primary planetary speed reduction mechanism and a secondary planetary speed reduction mechanism, a rotor shaft of the low-torque motor is connected with a primary input shaft of the primary planetary speed reduction mechanism in a spline fit mode, a primary sun gear is assembled on the primary input shaft and is matched and axially fixed with a first gland, the primary input shaft is installed on a bearing support through a first bearing, the bearing support is fixed on a stator support through bolts, and a primary gear ring of the primary planetary speed reduction mechanism is also fixed on the stator support;
the planet wheel of the first-stage planetary reduction mechanism is connected with a second-stage input shaft of the second-stage planetary reduction mechanism through a connecting piece, a second-stage sun gear is installed on the second-stage input shaft through a second gland, a second-stage gear ring of the second-stage planetary reduction mechanism is fixed on the stator support, and the planet wheel of the second-stage planetary reduction mechanism is connected with a second-stage output shaft assembly.
Further, a rotor shaft of the low-torque motor is mounted on the inner side of the stator support through a rear end cover, and a third bearing matched with the rotor shaft is arranged on the inner side of the rear end cover;
the rear end cover is arranged at one end, far away from the speed reduction assembly, of the rotor shaft.
Further, the stator support is a water-cooling stator support, and the direct-drive motor and the low-torque motor share one water-cooling stator support and a cooling system;
the outer rotor shell of the direct-drive motor is pasted with direct-drive motor magnetic steel, and the direct-drive motor is a permanent magnet motor.
Further, the wheel comprises a rim assembly and a tire arranged on the outer side of the rim assembly;
the rim assembly is fixedly connected with the outer rotor shell through wheel bolts;
the number of the tires is more than one.
In a second aspect, the present invention provides a vehicle, wherein the wheels of the vehicle are electric wheels, and the electric wheels are electric wheels with the double motors operating in parallel according to the first aspect.
In a third aspect, the present invention provides a wheel manufacturing process for manufacturing an electric wheel in which the two motors described in the first aspect are operated in parallel.
Compared with the prior art, the invention has the beneficial effects that:
1. the direct drive motor runs for a long time, so that the hub motor assembly has a series of advantages brought by direct drive, such as high efficiency, high reliability and quick system response;
2. the low-torque motor transmission chain provides short-time torque at a larger speed ratio, can meet the torque requirements of vehicle climbing and medium-low speed acceleration, and solves the limitation of a direct drive motor;
3. the design of a large speed ratio of multi-stage planetary reduction enables the cost of the whole set of low-torque motor plus planetary reduction to be lower, thereby providing larger short-time torque with lower cost;
4. the low-torque motor can only operate at medium and low speed for a short time, does not work at high speed, and follows the direct drive motor, so that faults and damages caused by continuous, high-speed and large-torque operation of the planetary reduction mechanism are avoided, and the reliability of the system is improved.
5. A clutch is not designed in the low-torque motor transmission system, and the control of the system is relatively simple.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a cross-sectional view of a dual motor parallel-running motorized wheel and vehicle incorporating the tire and rim assembly of the present invention;
FIG. 2 is a front and side view of a dual-motor parallel-operated electric wheel and vehicle in accordance with the present invention;
FIG. 3 is front and side elevational views of a dual motor parallel operated motorized wheel and vehicle incorporating the tire and rim assembly of the present invention;
fig. 4 is a schematic diagram of output torque and rotation speed curves of a direct drive motor in the electric wheel created by the invention;
FIG. 5 is a schematic of the output torque and speed curves of the low torque motor drive system in the inventive electric wheel;
FIG. 6 is a schematic diagram of output torque and speed curves when the electric wheels of the present invention are operated in parallel;
in the figure: 1. a wheel bolt; 2. a rim assembly; 3. an outer rotor housing; 4. magnetic steel of a direct drive motor; 5. water-cooling the stator support; 6. a first-stage gear ring; 7. a direct-drive motor stator core with a winding; 8. a bearing support; 9. a first bearing; 10. a first stage input shaft; 11. a first output shaft; 12. a first end cover; 13. a first bearing cover; 14. a second bearing; 15. the low-torque motor is provided with a winding stator core; 16. a low torque motor rotor assembly; 17. a third bearing; 18. a rear end cap; 19. a rotor shaft; 20. oil sealing; 21. a tire; 22. a second stage gear ring; 23. a first stage sun gear; 24. a first gland; 25. a second stage input shaft; 26. a second stage sun gear; 27. a second gland; 28. a second stage output shaft assembly; 29. a fourth bearing; 30. a second output shaft; 31. a fifth bearing; 32. and an outer transmission cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
referring to fig. 1 to 6, the invention provides a technical solution: the utility model provides an electronic wheel and vehicle of bi-motor parallel operation, includes and directly drives motor and low torque motor, directly drives the motor and is used for directly driving the wheel, directly drives motor and low torque motor sharing a cooling system, and the power input of low torque motor is to first order planetary reduction gear, then transmits second level planetary reduction gear from first order planetary reduction gear, and the power of second level planetary reduction gear is coupled to outer rotor shell 3 through an outer transmission lid 32 on, realizes the parallel operation of bi-motor. When the vehicle needs power, the direct drive motor continuously operates, when climbing or accelerating at a medium-low speed, the low-torque motor transmission system is in intervention operation to provide higher peak torque, a clutch is not arranged in the low-torque motor transmission system, and when the vehicle does not work, the low-torque motor follows the direct drive motor.
In the embodiment, the outer rotor shell 3 is positioned at the outermost side of the hub motor, and the direct drive motor magnetic steel 4 is fixed at the inner side of the outer rotor shell 3 to form an outer rotor of the direct drive motor; the inner stator of the direct-drive motor consists of a water-cooling bracket 5, a direct-drive motor stator core 7 with windings, a first output shaft 11 and a second output shaft 30, the second output shaft 30 and the first output shaft 11 are fixed on the water-cooling stator bracket 5 through bolts, the low-torque motor is arranged on the inner side of the stator bracket 5, and the direct-drive motor stator core 7 with windings is arranged on the outer side of the water-cooling stator bracket 5 to form the inner stator of the direct-drive motor; the second bearing 14 and the fifth bearing 31 are pressed on an output shaft I11 and an output shaft II 30 of an inner stator of the direct drive motor and are assembled with an outer rotor of the direct drive motor and an end cover I12, a fixing position for fixing the second bearing 14 is formed between the inner side of a bearing cover I13 and the outer side of the end cover I12, the bearing cover I13 is fixedly connected with the end cover I12 through bolts, and the components form the outer rotor direct drive motor; the low-torque motor stator core with winding 15 is arranged on the inner side of the water-cooling stator support 5, cooling liquid flows through a water channel of the support to provide cooling for the two motors, a low-torque motor rotor assembly 16 is arranged on a low-torque motor rotor shaft 19 and then arranged on a rear end cover 18 through a third bearing 17, and the rear end cover 18 is fixed on the water-cooling stator support 5 through bolts; the shaft end of the low-torque motor rotor shaft 19 is provided with an external spline and is matched with the internal spline of the first-stage input shaft 10 to transmit power; the first-stage input shaft 10 is provided with a first-stage sun gear 23 and is matched and fixed with a first gland 24, the first-stage input shaft 10 is arranged on a bearing support 8 through a first bearing 9, the bearing support 8 is fixed on a water-cooling stator support 5 through bolts, and an oil seal 20 is arranged between the first-stage input shaft 10 and the bearing support 8; the first-stage gear ring 6 is fixed on the water-cooling stator support 5 and forms a first-stage planetary reduction mechanism together with a planet carrier on the right side of the second-stage input shaft 25; a second-stage input shaft 25 is arranged on the left side of the first-stage input shaft 10, a planet wheel of the first-stage planetary reduction mechanism is connected with the second-stage input shaft 25 through a connecting piece to drive the second-stage input shaft to rotate, a second-stage sun wheel 26 is mounted on the second-stage input shaft 25 and fixed through a second gland 27, a second-stage gear ring 22 is fixed on the water-cooling stator support 5, and a second-stage output shaft assembly 28 is mounted in an inner hole of an output shaft II 30 through a fourth bearing 29 to form a second-stage planetary reduction mechanism; an inner spline is arranged in an inner hole of the outer transmission cover 32, the inner spline is connected with an output shaft outer spline of the second-stage output shaft assembly 28, the outer transmission cover 32 is connected with the outer rotor shell 3 through a bolt, and the torque of the low-torque motor transmission system is output to the outer rotor shell 3 through the outer transmission cover 32, so that the electric wheel and the vehicle with the double motors running in parallel are formed, and the parallel running of the low-torque motor transmission system and the two transmission systems of the direct-drive motor is realized;
the direct drive motor and the low-torque motor transmission system are integrated in the wheel, and meanwhile, the low-torque motor transmission system is integrated in the inner stator of the direct drive motor.
In the present embodiment, the second-stage input shaft 25 is an assembly in which the carrier of the first-stage planetary reduction mechanism and the input shaft of the second-stage planetary reduction mechanism are fitted together.
In this embodiment, the wheel bolt 1 is composed of a wheel bolt fixed to the outer rotor case 3 and a wheel nut by which the rim assembly 2 is fixed to the outer rotor case 3, the tire 21 is mounted to the rim assembly 2, and the outer shape of the hub motor assembly in which the tire and rim assembly 2 is mounted is shown in fig. 3.
In this embodiment, the direct drive motor is an outer rotor motor, and the low torque motor is an inner rotor motor.
In the embodiment, the number of the planetary speed reducing mechanisms of the low-torque motor transmission system can be 1, 2 or multiple stages.
In this embodiment, the direct-drive motor stator core 7 with windings is pressed on the water-cooling stator support 5 through a hot sleeve or a press fit.
In this embodiment, the direct drive motor magnetic steel 4 is adhered to the inner side of the outer rotor housing 3 by glue.
The working principle and the using process of the invention are as follows: the outermost of the hub motor is a low-speed direct-drive permanent magnet synchronous outer rotor motor, the motor is of a multi-pole design and can output large torque at low speed, the torque of the motor is output to the outer rotor shell, then is transmitted to the rim assembly 2 and finally is transmitted to the tire 21, double tires are adopted in the motor, and the number of the electric wheels to be protected is not limited to the number of the tires. A low-torque motor is designed in the water-cooling stator support 5 of the direct-drive motor, the low-torque motor and the direct-drive motor share the water-cooling stator support 5, and cooling liquid flows through a water channel of the support to cool the two motors.
The power of the low-torque motor is transmitted to the first-stage planetary reduction mechanism through the first-stage input shaft and then transmitted to the second-stage planetary reduction mechanism, and the planet carrier of the second-stage planetary reduction mechanism transmits torque to the outer rotor shell through the outer transmission cover 32, so that the parallel operation of two transmission systems is realized;
the motor, the first-stage planetary reduction mechanism and the second-stage planetary reduction mechanism on the low-torque motor transmission chain are all integrated inside a water-cooling stator bracket 5 of the direct-drive motor;
when the vehicle needs power, the direct drive motor always runs, and when the vehicle is accelerated on a climbing slope or at a medium and low speed or is fed by high-power electric braking, the low-torque motor is involved in running to provide auxiliary power. When the vehicle speed exceeds a set value, the low-torque motor can also not work and follows the direct drive motor;
fig. 4 shows an output torque and rotation speed curve of a direct drive motor in an electric wheel and a vehicle in which two motors operate in parallel, fig. 5 shows an output torque and rotation speed curve of a low torque motor transmission system in an electric wheel, when the two are operated in parallel, torques at various rotation speed points are superposed, and finally, the output torque and rotation speed curve of the electric wheel and the vehicle in which two motors operate in parallel is shown in fig. 6.
Example two: the present embodiment provides a vehicle, the wheels of which are electric wheels, and the electric wheels are electric wheels with two motors operating in parallel as described in the above embodiments.
Example three: the present embodiment provides a wheel manufacturing process for manufacturing an electric wheel with two motors operating in parallel as described in the above embodiments, and it should be noted that the present embodiment is not limited to the process, and also includes corresponding manufacturing equipment.
The above embodiments are only for the purpose of illustrating the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art should be able to substitute or change the technical solution and the inventive concept of the present invention within the technical scope disclosed in the present invention.
Claims (10)
1. The utility model provides an electric wheel of bi-motor parallel operation, includes wheel hub motor assembly and wheel, its characterized in that: the hub motor assembly comprises a direct drive motor and a low torque motor, wherein the direct drive motor is an outer rotor motor, the low torque motor is an inner rotor motor, and an outer rotor shell of the direct drive motor is fixedly matched with the wheel and used for directly driving the wheel;
the inner stator of the direct-drive motor comprises a stator bracket and a stator core with a winding, and the stator cores with the winding of the low-torque motor and the direct-drive motor are respectively arranged on the inner side and the outer side of the stator bracket;
the power output shaft of the low-torque motor is connected with a speed reducing assembly, and the output shaft of the speed reducing assembly is coupled with the outer rotor shell through an outer transmission cover, so that the parallel operation of the double motors is realized.
2. The electric wheel of claim 1, in which the two motors are operated in parallel, wherein: the inner stator of the direct drive motor further comprises a first output shaft and a second output shaft which are fixedly arranged at two ends of the stator support respectively, a second bearing is pressed on the outer side of the first output shaft, a first end cover is arranged on the outer side of the second bearing and fixedly connected with the outer rotor shell, a first bearing cover used for fixing the second bearing is further arranged on the outer end face of the second bearing, and the first bearing cover is fixedly connected with the first end cover;
and the outer side of the output shaft II is pressed with a fifth bearing, one end of the outer rotor shell corresponding to the fifth bearing is turned inwards to form a connecting part, and the connecting part is matched with the outer ring of the fifth bearing.
3. The electric wheel with two motors operating in parallel according to claim 2, wherein: an output shaft of the speed reducing assembly is mounted in an inner hole of the second output shaft through a fourth bearing;
the outer transmission cover is connected with the end part of the output shaft of the speed reducing assembly through a spline;
the outer transmission cover is fixedly connected with the outer rotor shell.
4. The electric wheel with two motors operating in parallel according to claim 1 or 3, characterized in that: the speed reduction assembly is a multi-stage planetary speed reduction mechanism with one or more than two stages, and is arranged inside an inner stator of the direct drive motor.
5. The electric wheel with two motors operating in parallel according to claim 4, wherein: the speed reducing assembly comprises a primary planetary speed reducing mechanism and a secondary planetary speed reducing mechanism, a rotor shaft of the low-torque motor is connected with a primary input shaft of the primary planetary speed reducing mechanism in a spline fit mode, a primary sun gear is assembled on the primary input shaft and is matched and axially fixed with a first gland, the primary input shaft is installed on a bearing support through a first bearing, the bearing support is fixed to a stator support through bolts, and a primary gear ring of the primary planetary speed reducing mechanism is also fixed to the stator support;
the planet wheel of the first-stage planetary reduction mechanism is connected with a second-stage input shaft of the second-stage planetary reduction mechanism through a connecting piece, a second-stage sun gear is installed on the second-stage input shaft through a second gland, a second-stage gear ring of the second-stage planetary reduction mechanism is fixed on the stator support, and the planet wheel of the second-stage planetary reduction mechanism is connected with a second-stage output shaft assembly.
6. The electric wheel of claim 1, in which the two motors are operated in parallel, wherein: the rotor shaft of the low-torque motor is arranged on the inner side of the stator bracket through a rear end cover, and a third bearing matched with the rotor shaft is arranged on the inner side of the rear end cover;
the rear end cover is arranged at one end, far away from the speed reduction assembly, of the rotor shaft.
7. The electric wheel of claim 1, in which the two motors are operated in parallel, wherein: the stator support is a water-cooling stator support, and the direct-drive motor and the low-torque motor share one water-cooling stator support and a cooling system;
the outer rotor shell of the direct-drive motor is pasted with direct-drive motor magnetic steel, and the direct-drive motor is a permanent magnet motor.
8. The electric wheel of claim 1, in which the two motors are operated in parallel, wherein: the wheel comprises a rim assembly and a tire arranged on the outer side of the rim assembly;
the rim assembly is fixedly connected with the outer rotor shell through wheel bolts;
the number of the tires is more than one.
9. A vehicle, the wheel of this vehicle is electronic round, its characterized in that: the electric wheel adopts an electric wheel with double motors operated in parallel as claimed in any one of claims 1 to 8.
10. A wheel manufacturing process is characterized in that: the process is used for manufacturing the electric wheel with the double motors in parallel operation, wherein the electric wheel is as defined in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110558900.8A CN113352873A (en) | 2021-05-21 | 2021-05-21 | Electric wheel with double motors running in parallel, vehicle and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110558900.8A CN113352873A (en) | 2021-05-21 | 2021-05-21 | Electric wheel with double motors running in parallel, vehicle and manufacturing process |
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| Publication Number | Publication Date |
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| CN113352873A true CN113352873A (en) | 2021-09-07 |
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| CN202110558900.8A Pending CN113352873A (en) | 2021-05-21 | 2021-05-21 | Electric wheel with double motors running in parallel, vehicle and manufacturing process |
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| CN212447100U (en) * | 2020-04-14 | 2021-02-02 | 山东宏泰机械科技股份有限公司 | Double-motor driving device of electric automobile |
| CN215513209U (en) * | 2021-05-21 | 2022-01-14 | 天津天海轮毂电机科技有限公司 | Electric wheel with double motors running in parallel and vehicle |
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2021
- 2021-05-21 CN CN202110558900.8A patent/CN113352873A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323248A (en) * | 2017-06-05 | 2017-11-07 | 山东理工大学 | A kind of electric motor coach electronic wheel system of Dual-motors Driving |
| CN107599823A (en) * | 2017-10-19 | 2018-01-19 | 吉林大学 | Differential multimodal fusion power car drive system |
| CN212447100U (en) * | 2020-04-14 | 2021-02-02 | 山东宏泰机械科技股份有限公司 | Double-motor driving device of electric automobile |
| CN215513209U (en) * | 2021-05-21 | 2022-01-14 | 天津天海轮毂电机科技有限公司 | Electric wheel with double motors running in parallel and vehicle |
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