WO2020098190A1 - Hub motor drive system and motor vehicle - Google Patents
Hub motor drive system and motor vehicle Download PDFInfo
- Publication number
- WO2020098190A1 WO2020098190A1 PCT/CN2019/077943 CN2019077943W WO2020098190A1 WO 2020098190 A1 WO2020098190 A1 WO 2020098190A1 CN 2019077943 W CN2019077943 W CN 2019077943W WO 2020098190 A1 WO2020098190 A1 WO 2020098190A1
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- WO
- WIPO (PCT)
- Prior art keywords
- drive system
- sun gear
- motor drive
- gear shaft
- wheel
- Prior art date
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Classifications
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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
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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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
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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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
- H02K7/08—Structural association with bearings
-
- 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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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
-
- 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
- B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
-
- 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
- B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- the present invention relates to the field of motor vehicles such as electric vehicles, and particularly to a hub motor drive system for a motor vehicle and a motor vehicle including the hub motor drive system.
- new energy vehicles such as electric vehicles integrate drive motors, planetary gear reducers, wheel bearings, and brake systems into the wheel space to form a hub motor drive system, where the drive motor can directly drive the wheels There is no need for a transmission and drive shaft.
- FIG. 1 shows a partial structural schematic diagram of a prior art hub motor drive system, in which a rotor bracket for supporting a rotor of a drive motor and a sun gear shaft of a planetary gear reducer are shown.
- the rotor bracket 10 includes a first axial portion 101, a second axial portion 102, and a third axial portion 103 each extending along the axial direction A and an edge for connecting the three portions together Radial portion 104 which extends in the radial direction R.
- the rotor bracket 10 further includes a stepped portion 105 provided at an axial side (left side in FIG. 1) end of the second axial portion 102 and fixed to the sun gear shaft 20.
- the first axial portion 101 is located at the radially outermost position
- the second axial portion 102 is located at the radial most In the inner position
- the third axial portion 103 is interposed between the first axial portion 101 and the second axial portion 102 in the radial direction R and extends from the substantially central portion of the radial portion 104 toward the axial side.
- the first axial portion 101 is used to fix the rotor of the drive motor, and a part of the radially outer side of the second axial portion 102 (the portion on the left side in the figure) is formed as a mounting surface 102S for mounting a bearing, and The radially outer side surface of the third axial portion 103 is formed as a sealing surface 103S for contacting with the seal assembly, the above bearing is used to support the rotor bracket 10 to the housing assembly of the in-wheel motor drive system, and the above seal assembly is used for the in-wheel motor The seal between the housing assembly of the drive system and the rotor bracket 10. Further, a wheel bearing for fitting the output shaft is installed in a space inside the second axial portion 102 in the radial direction.
- the step portion 105 is fixed to the sun gear shaft 20 by welding at the position indicated by the reference symbol P.
- the structure of the rotor bracket 10 is complicated, it is difficult to deal with the sealing surface 103S, and it is easy to cause leakage problems;
- the present invention has been made based on the above-mentioned defects of the prior art.
- An object of the present invention is to provide a new type of hub motor drive system, which avoids the problem of easy leakage due to the difficulty in processing the sealing surface in the prior art.
- the invention also provides a motor vehicle including the in-wheel motor drive system.
- the present invention adopts the following technical solutions.
- the present invention provides a hub motor drive system that includes a housing assembly including a housing body and a housing cover assembled axially opposite each other, An installation space is formed inside the housing assembly; a drive motor is housed in the installation space, and the drive motor includes a stator fixed relative to the housing body and a radial position of the stator An inner rotor that can rotate relative to the stator; a rotor bracket that supports the rotor from the radially inner side and is fixed to the rotor; and a planetary gear reducer, the planetary gear reducer is located at the installation Outside the space, and the planetary gear reducer further includes a sun gear shaft drivingly coupled with the rotor bracket to be able to rotate with the rotor bracket, wherein the rotor bracket includes an axial portion extending in the axial direction and A radial portion extending radially inward from the axial portion, the axial portion fixedly supports the rotor, the radial portion is drivingly coupled with the sun gear shaft, and the hub motor drive
- the first gap is formed with a first opening that opens toward the axial side, and the first bearing is located closer to the first opening than the first seal assembly.
- the radial portion is fixed to the sun gear shaft through an interference fit; or the radial portion is drivingly coupled to the sun gear shaft through a spline connection.
- annular protrusion is formed on the radial outer surface of the sun gear shaft, the radial portion and the annular protrusion realize the interference fit, and the radial portion is formed with a radial direction
- a limit portion protruding inside and abutting the end surface on the other side in the axial direction of the ring-shaped protrusion makes the rotor bracket positioned in the axial direction relative to the sun gear shaft.
- the in-wheel motor drive system further includes a second bearing disposed at a second gap between the housing cover and the sun gear shaft and located on the other axial side of the radial portion of the rotor bracket And the second seal assembly.
- the second gap is formed with a second opening that opens toward the other side in the axial direction, and the second seal assembly is located closer to the second opening than the second bearing.
- the planetary gear reducer further includes a plurality of planetary gears located radially outward of the sun gear shaft, and a portion of the sun gear shaft including one axial end thereof is formed to mesh with the plurality of planet gears External teeth.
- the first bearing and the first seal assembly are provided at a portion of the sun gear shaft on the axially other side than the external teeth.
- the external teeth are subjected to gear modification after the heat treatment of the sun gear shaft.
- the sun wheel shaft has a hollow structure
- the in-wheel motor drive system further includes a wheel bearing
- the wheel bearing is disposed on the sun wheel shaft in such a manner that the distance between the geometric center and the wheel stress point is minimized internal.
- the geometric center of the wheel bearing and the wheel stress point overlap in the axial direction.
- the present invention provides a motor vehicle whose wheels include the in-wheel motor drive system described in any one of the above technical solutions.
- the present invention provides a new in-wheel motor drive system and a motor vehicle including the in-wheel motor drive system.
- the in-wheel motor drive system is provided between the housing body and the rotor bracket in the prior art.
- the bearing and the sealing assembly are arranged between the casing body and the sun gear shaft, which not only can greatly simplify the structure of the rotor bracket compared with the prior art rotor bracket, but also can facilitate the sealing surface of the sun gear shaft for setting the sealing assembly Treatment to improve the sealing effect.
- FIG. 1 is a schematic cross-sectional view of a partial structure of a hub motor drive system according to the prior art.
- FIG. 2 is a schematic cross-sectional view of an in-wheel motor drive system according to an embodiment of the present invention.
- FIG. 3a is a schematic cross-sectional view of the partial structure of the hub motor drive system in FIG. 2;
- FIG. 3b is a schematic cross-sectional view of the rotor bracket of the hub motor drive system in FIG. 2;
- FIG. 3c is a schematic view of the hub motor drive system in FIG. A schematic cross-sectional view of the sun gear shaft.
- axial refers to the axial, radial and circumferential directions of the housing assembly (including the housing body and housing cover) of the hub motor drive system
- One axial side refers to the left side in FIGS. 2 to 3c
- the other axial side refers to the right side in FIGS. 2 to 3c
- wheel stress point refers to the projection of the intersection between the wheel midplane and the center axis of the wheel on the tire ground surface
- transmission coupling refers to the drive between the two components through a fixed connection structure or transmission mechanism. Force / torque transmission.
- the in-wheel motor drive system includes a housing assembly (including a housing body 1 and a housing cover 2) assembled together, a driving motor 3, a rotor bracket 4, and planetary gear reduction ⁇ 5 ⁇ output ⁇ 6 ⁇ 5 and the output shaft 6.
- the entire housing assembly composed of the housing body 1 and the housing cover 2 has a substantially cylindrical shape.
- the housing body 1 is located on one side of the housing cover 2 in the axial direction and is formed with an opening toward the other side in the axial direction.
- the housing cover 2 is opposed to the housing body 1 in the axial direction A and assembled with the housing body 1 in such a manner as to cover the opening of the housing body 1, so that the housing body 1 and the housing cover 2 surround to form an installation space S.
- the bottom of the housing body 1 opposite to the opening is formed in a bent shape and the housing cover 2 is also formed in a bent shape so that the dimension of the installation space S between the housing body 1 and the housing cover 2 in the axial direction A It decreases from the radially outer side toward the radially inner side.
- both the casing body 1 and the casing cover 2 are formed with a through hole at the center for passing through the sun gear shaft 51 and other components described below.
- the entire drive motor 3 is accommodated in the installation space S.
- the drive motor 3 includes a stator 31 and a rotor 32 each having an annular shape.
- stator 31 is located on the radially inner side of the housing body 1 and fixed relative to the housing body 1, and a cooling assembly is preferably provided between the stator 31 and the outer periphery of the housing body 1 to reduce the stator 31 in the drive motor 3 The temperature during work.
- the rotor 32 is located radially inward of the stator 31 and is opposed to the stator 31 in the radial direction R.
- the rotor 32 can rotate relative to the stator 31 so that the rotor 32 can rotate in the magnetic field when the stator 31 generates a magnetic field.
- the rotor holder 4 supports the rotor 32 and has a cylindrical shape as a whole.
- the rotor bracket 4 includes an axial portion 41, a radial portion 42 and a limiting portion 43.
- the axial portion 41 extends along the axial direction A, and the axial portion 41 is fixed to the rotor 32 from the radially inner side to support the rotor 32.
- the length of the axial portion 41 in the axial direction A is substantially equal to the length of the rotor 32 in the axial direction A.
- the radial portion 42 extends radially inward from a substantially central portion of the axial portion 41 in the axial direction A and extends from the installation space S to be fixed with the sun gear shaft 51 described below.
- the radially inner end of the radial portion 42 forms a thickened portion having a larger size in the axial direction A and is used to fix the annular protrusion 51p of the sun gear shaft 51 by interference fit, for example.
- the surface on the axial side of the radial portion 42 does not have any convex shape.
- the limiting portion 43 extends radially inward from the thickened portion and serves to abut against the annular projection 51p of the sun gear shaft 51 from the other side in the axial direction, thereby defining the rotor holder 4 relative to the sun gear shaft 51 in the axial direction A s position.
- the rotor bracket 4 of the in-wheel motor drive system has a much simplified structure compared to the conventional rotor bracket 10 shown in FIG. 1 and is easier to process.
- the planetary gear reducer 5 is entirely located outside the installation space S formed by the housing body 1 and the housing cover 2 and the planetary gear reducer 5 is entirely disposed radially inward of the stator 31, and the planetary gear reducer The device 5 is arranged coaxially with the drive motor 3. Further, the planetary gear reducer 5 includes a sun gear shaft 51, a plurality of planet gears 52, a planet gear carrier 53 and a ring gear 54 assembled with each other, wherein a part of the sun gear shaft 51, a plurality of planet gears 52, a planet gear carrier Both the 53 and the ring gear 54 are arranged on the axial side of the rotor 32.
- the other structures of the planetary gear reducer 5 except for the other part of the sun gear shaft 51 are arranged on the axial side of the rotor 32. In this way, it can be ensured that the planetary gear reducer 5 can be filled with more oil, so that the lubricating performance and cooling performance are better.
- the sun gear shaft 51 is a hollow shaft, and the sun gear shaft 51 extends through the central through holes of the housing body 1 and the housing cover 2 along the axial direction A, so that the sun gear shaft 51 and the housing body 1 and the housing cover 2 Both overlap in the axial direction A.
- a first gap is formed between the sun gear shaft 51 and the housing body 1, and a second gap is formed between the sun gear shaft 51 and the housing cover 2.
- the first bearing 51a and the first seal assembly 51c arranged in the axial direction A are provided in the first gap, and the second bearing 51b and the second seal assembly 51d are arranged in the axial direction A in the second gap.
- Both bearings 51a, 51b are radial bearings and are used to support the rotation of the sun gear shaft 51 relative to the housing body 1 and the housing cover 2 in the radial direction R.
- Both sealing assemblies 51c, 51d have an annular shape
- the first sealing assembly 51c is preferably fitted to the housing body 1 by an interference fit
- the second sealing assembly 51d is preferably fitted to the housing cover 2 by an interference fit
- the two seal assemblies 51c, 51d are used to prevent foreign substances (including lubricating media) from entering the installation space S.
- both the first bearing 51 a and the first seal assembly 51 c are separated from the second bearing 51 b and the second seal assembly 51 d by the radial portion 42 of the rotor bracket 4.
- the first bearing 51a is located on the axial side of the first seal assembly 51c. That is, the first bearing 51a is closer to the opening of the first gap toward the axial side than the first seal assembly 51c. In this way, the lubricating medium flowing into the first gap can provide a lubricating effect to the first bearing 51a.
- the second seal assembly 51d is located on the other axial side of the second bearing 51b. That is, the second seal assembly 51d is closer to the opening of the second gap toward the other side in the axial direction than the second bearing 51b.
- a ring-shaped protrusion 51p is formed on the radial outer surface of the sun gear shaft 51.
- the ring-shaped protrusion 51p and the radial portion 42 of the rotor bracket 4 have an interference fit, thereby fixing the rotor bracket 4 to the sun gear shaft 51.
- the limiting portion 43 of the rotor holder 4 abuts on the axially opposite end surface of the annular protrusion 51p, so that the rotor holder 4 is positioned in the axial direction A relative to the sun gear shaft 51.
- a portion of the sun gear shaft 51 facing the plurality of planet gears 52 is formed with external teeth 51g that are engaged with the planet gears 52.
- This solution of directly forming the external teeth 51g on the sun gear shaft 51 is simpler and easier to implement than the prior art solutions in which the sun gear shaft and the sun gear are independently manufactured and assembled together.
- the first bearing 51a and the first seal assembly 51c are provided on the sun shaft 51 on the axially other side than the external teeth 51g.
- the part of the sun gear shaft 51 where the first seal assembly 51c and the second seal assembly 51d are provided can be surface-treated to improve the sealing performance.
- a plurality of planet gears 52 are located radially outside of the sun gear shaft 51 and are evenly distributed along the circumferential direction.
- Each planet gear 52 is formed with teeth meshing with the external teeth 51g of the sun gear shaft 51 so that each planet will rotate as the sun gear shaft 51 rotates
- the gear 52 is capable of rotating around its respective central axis and revolving around the sun gear shaft 51.
- the planetary carrier 53 is located radially outward of the sun gear shaft 51, and the planetary carrier 53 is fixed to the output shaft 6 while mounting a plurality of planet gears 52. As the planetary gear 52 revolves, it can drive the planetary carrier 53 to rotate and then drive the output shaft 6 to rotate.
- the ring gear 54 is located radially outward of the plurality of planet gears 52 and is fixed to the housing body 1, and a track for the plurality of planet gears 52 to revolve is formed between the ring gear 54 and the sun gear shaft 51.
- the ring gear 54 is formed with a plurality of The teeth of the planet gear 52 mesh.
- the output shaft 6 is a flanged shaft.
- the output shaft 6 includes a flange portion 61 and a shaft portion 62 that are formed integrally.
- the output shaft 6 is arranged coaxially with the planetary gear reducer 5.
- the flange portion 61 is formed in a disk shape and extends radially outward from the shaft portion 62.
- the flange portion 61 is fixed to the planetary carrier 53 by a fixing member, so that the entire output shaft 6 can follow the planetary carrier 53 Turns while turning.
- the shaft portion 62 protrudes from the center of the flange portion 61 toward the other side in the axial direction and extends into the inside of the hollow sun gear shaft 51 in the axial direction.
- the wheel bearing 62a is fitted to the shaft portion 62 from the outside in the radial direction, and the wheel bearing 62a is arranged coaxially with the drive motor 3 and the planetary gear reducer 5.
- the wheel bearing 62 a is arranged inside the sun gear shaft 51. In this way, the projection of the geometric center of the wheel bearing 62a on the tire ground contact surface can be arranged to substantially coincide with the wheel stress point, which is beneficial to the improvement of stability and avoids the problem of large-scale deformation of the output shaft in the prior art.
- the wheel bearing 62 a can be attached to the shaft portion 62 by the wheel bearing lock nut 62 b cooperating with the flange portion 61.
- the wheel bearing 62a is a ball bearing, preferably a double row ball bearing, so that the friction force of the wheel bearing 62a during operation is small, and the efficiency of the drive system is improved.
- the driving force / torque can be sequentially transmitted to the output shaft 6 via the rotor 32, rotor bracket 4, sun gear shaft 51, planet gear 52, and planet gear carrier 53 in the in-wheel motor drive system to drive The hub, which ultimately drives the wheel.
- the drive motor 3 directly drives the wheels of the motor vehicle without passing through the conventional transmission and drive shaft outside the wheels, so the transmission path of the driving force / torque is shortened compared to the drive system of the prior art motor vehicle, so that the improvement Drive the efficiency of the system and reduce the energy loss in the transmission process.
- the coaxial arrangement of the drive motor 3, planetary gear reducer 5, wheel bearing 62a and output shaft 6 can greatly save the space occupied by the hub motor drive system, and the hub motor drive system is integrated with the wheels This facilitates the layout of the vehicle and reduces the effects of spatial interference when the vehicle is in bumps and turns.
- the in-wheel motor drive system may further include a knuckle sleeve 7, a sensor 8, and a braking system 9.
- the knuckle sleeve 7 is located between the sun axle 51 and the wheel bearing 62a to cooperate with other components of the knuckle assembly to achieve steering control of the wheels.
- the sensor 8 is provided in the installation space S and is provided in the housing cover 2 and the rotor bracket 4.
- the sensor 8 is used to monitor parameters such as the rotation speed of the drive motor 3.
- the braking system 9 is located on the other side in the axial direction of the sun gear shaft 51 and on the radially inner side of the housing cover 2.
- the braking system 9 includes a brake drum 91 and a brake that are sleeved on the knuckle sleeve 7 from the radially outer side
- the disc 92, the brake drum 91 and the brake disc 92 are opposed to each other in the axial direction A and cooperate with each other to be able to brake the in-wheel motor drive system.
- the present invention also provides a motor vehicle whose wheel includes a hub motor drive system having the above structure.
- the in-wheel motor drive system according to the present invention may further include other necessary components that are not described in the above specific embodiments.
- seal assemblies 51c and 51d may be provided at necessary locations in the in-wheel motor drive system, for example, between the flange portion 61 of the output shaft 6 and the housing body 1 There is a seal assembly 6a, and a seal assembly 6a may be provided between the flange portion 61 and the sun gear shaft 51.
- the main function of these seal assemblies 6a is to isolate different spaces in the drive system so that media such as oil will not circulate between the spaces separated by these seal assemblies 6a.
- a thrust roller bearing 53a may be provided in the axial gap between the housing body 1 and the planetary carrier 53 to support the planetary carrier 53 in the axial direction A.
- the present invention is not limited to this.
- the rotor bracket 4 and the sun gear shaft 51 achieve transmission coupling so that the sun gear shaft 51 can rotate with the rotor bracket 4
- the rotor bracket 4 and the sun gear shaft 51 can be splined to achieve transmission coupling or
- the same welding technique as in the prior art can also be used.
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Retarders (AREA)
Abstract
A hub motor drive system applied to a motor vehicle. In the hub motor drive system, a first bearing (51a) and a first sealing assembly (51c) are provided between a housing body (1) and a sun gear axle (51). Compared with the prior art that a bearing and a sealing assembly are provided between a housing body and a rotor support, the structure of the rotor support (4) is greatly simplified, and a sealing surface of the sun gear axle (51) used for arranging the sealing assembly can also be conveniently processed to improve the sealing effect. Also provided is a vehicle using the hub motor drive system.
Description
本发明涉及例如电动汽车等的机动车领域,具体地涉及用于机动车的轮毂电机驱动***及包括该轮毂电机驱动***的机动车。The present invention relates to the field of motor vehicles such as electric vehicles, and particularly to a hub motor drive system for a motor vehicle and a motor vehicle including the hub motor drive system.
在现有技术中,例如电动汽车等的新能源机动车将驱动电机、行星齿轮减速器、车轮轴承和制动***等整合在车轮空间内以构成轮毂电机驱动***,其中驱动电机能够直接驱动车轮而不需要变速器和驱动轴。In the prior art, new energy vehicles such as electric vehicles integrate drive motors, planetary gear reducers, wheel bearings, and brake systems into the wheel space to form a hub motor drive system, where the drive motor can directly drive the wheels There is no need for a transmission and drive shaft.
图1中示出了现有技术的轮毂电机驱动***的局部结构示意图,其中示出了用于支撑驱动电机的转子的转子支架和行星齿轮减速器的太阳轮轴。FIG. 1 shows a partial structural schematic diagram of a prior art hub motor drive system, in which a rotor bracket for supporting a rotor of a drive motor and a sun gear shaft of a planetary gear reducer are shown.
如图1所示,转子支架10包括均沿着轴向A延伸的第一轴向部分101、第二轴向部分102和第三轴向部分103以及用于将这三部分连接在一起的沿着径向R延伸的径向部分104。另外,转子支架10还包括设置于第二轴向部分102的轴向一侧(图1中的左侧)端且用于与太阳轮轴20固定的台阶部分105。As shown in FIG. 1, the rotor bracket 10 includes a first axial portion 101, a second axial portion 102, and a third axial portion 103 each extending along the axial direction A and an edge for connecting the three portions together Radial portion 104 which extends in the radial direction R. In addition, the rotor bracket 10 further includes a stepped portion 105 provided at an axial side (left side in FIG. 1) end of the second axial portion 102 and fixed to the sun gear shaft 20.
具体地,在第一轴向部分101、第二轴向部分102和第三轴向部分103之中,第一轴向部分101位于径向最外侧位置,第二轴向部分102位于径向最内侧位置,第三轴向部分103在径向R上介于第一轴向部分101和第二轴向部分102之间并且从径向部分104的大致中央部位朝向轴向一侧延伸。第一轴向部分101用于与驱动电机的转子固定,第二轴向部分102的径向外侧面的一部分(靠图中左侧的那部分)形成为用于安装轴承的安装面102S,并且第三轴向部分103的径向外侧面形成为用于与密封组件接触的密封面103S,上述轴承用于将转子支架10支撑于轮毂电机驱动***的壳体组件并且上述密封组件用于轮毂电机驱动***的壳体组件与转子支架10之间的密封。进一步地,用 于配合输出轴的车轮轴承安装于第二轴向部分102的径向内侧的空间内。台阶部分105则在附图标记P所指示的位置通过焊接而与太阳轮轴20固定在一起。Specifically, among the first axial portion 101, the second axial portion 102, and the third axial portion 103, the first axial portion 101 is located at the radially outermost position, and the second axial portion 102 is located at the radial most In the inner position, the third axial portion 103 is interposed between the first axial portion 101 and the second axial portion 102 in the radial direction R and extends from the substantially central portion of the radial portion 104 toward the axial side. The first axial portion 101 is used to fix the rotor of the drive motor, and a part of the radially outer side of the second axial portion 102 (the portion on the left side in the figure) is formed as a mounting surface 102S for mounting a bearing, and The radially outer side surface of the third axial portion 103 is formed as a sealing surface 103S for contacting with the seal assembly, the above bearing is used to support the rotor bracket 10 to the housing assembly of the in-wheel motor drive system, and the above seal assembly is used for the in-wheel motor The seal between the housing assembly of the drive system and the rotor bracket 10. Further, a wheel bearing for fitting the output shaft is installed in a space inside the second axial portion 102 in the radial direction. The step portion 105 is fixed to the sun gear shaft 20 by welding at the position indicated by the reference symbol P.
这样,在现有技术的轮毂电机驱动***中存在如下的缺陷:In this way, the prior art hub motor drive system has the following defects:
I.转子支架10的结构复杂,难以对密封面103S进行处理,容易导致泄漏问题;I. The structure of the rotor bracket 10 is complicated, it is difficult to deal with the sealing surface 103S, and it is easy to cause leakage problems;
II.难以控制转子支架10与太阳轮轴20由于采用焊接连接而导致的变形,因此产生了NVH问题;以及II. It is difficult to control the deformation of the rotor bracket 10 and the sun gear shaft 20 due to the use of a welded connection, thus causing NVH problems; and
III.车轮轴承的几何中心与车轮受力点之间的距离过大,这将减小车轮轴承的寿命并且与车轮轴承配合的输出轴容易产生大幅度的变形。III. The distance between the geometric center of the wheel bearing and the stress point of the wheel is too large, which will reduce the life of the wheel bearing and the output shaft matched with the wheel bearing is prone to large-scale deformation.
发明内容Summary of the invention
基于上述现有技术的缺陷做出了本发明。本发明的一发明目的在于提供一种新型的轮毂电机驱动***,该轮毂电机驱动***避免了现有技术中不易对密封面进行处理而导致容易泄漏的问题。本发明还提供了一种包括该轮毂电机驱动***的机动车。The present invention has been made based on the above-mentioned defects of the prior art. An object of the present invention is to provide a new type of hub motor drive system, which avoids the problem of easy leakage due to the difficulty in processing the sealing surface in the prior art. The invention also provides a motor vehicle including the in-wheel motor drive system.
为了实现上述发明目的,本发明采用如下的技术方案。In order to achieve the above object of the invention, the present invention adopts the following technical solutions.
本发明提供了一种如下的轮毂电机驱动***,所述轮毂电机驱动***包括:壳体组件,所述壳体组件包括在轴向上彼此相对地组装在一起的壳体主体和壳体盖,所述壳体组件的内部形成有安装空间;驱动电机,所述驱动电机收纳于所述安装空间内,所述驱动电机包括相对于所述壳体主体固定的定子和位于所述定子的径向内侧且能够相对于所述定子转动的转子;转子支架,所述转子支架从径向内侧支撑所述转子且固定于所述转子;以及行星齿轮减速器,所述行星齿轮减速器位于所述安装空间的外部,并且所述行星齿 轮减速器还包括与所述转子支架传动联接以能够随着所述转子支架转动的太阳轮轴,其中,所述转子支架包括沿着轴向延伸的轴向部分和从所述轴向部分朝向径向内侧延伸的径向部分,所述轴向部分固定支撑所述转子,所述径向部分与所述太阳轮轴传动联接,所述轮毂电机驱动***还包括设置在所述壳体主体和所述太阳轮轴之间的第一间隙的且位于所述转子支架的径向部分的轴向一侧的第一轴承和第一密封组件。The present invention provides a hub motor drive system that includes a housing assembly including a housing body and a housing cover assembled axially opposite each other, An installation space is formed inside the housing assembly; a drive motor is housed in the installation space, and the drive motor includes a stator fixed relative to the housing body and a radial position of the stator An inner rotor that can rotate relative to the stator; a rotor bracket that supports the rotor from the radially inner side and is fixed to the rotor; and a planetary gear reducer, the planetary gear reducer is located at the installation Outside the space, and the planetary gear reducer further includes a sun gear shaft drivingly coupled with the rotor bracket to be able to rotate with the rotor bracket, wherein the rotor bracket includes an axial portion extending in the axial direction and A radial portion extending radially inward from the axial portion, the axial portion fixedly supports the rotor, the radial portion is drivingly coupled with the sun gear shaft, and the hub motor drive system further includes A first bearing and a first seal assembly at a first gap between the housing body and the sun gear shaft and located on an axial side of the radial portion of the rotor bracket.
优选地,所述第一间隙形成有朝向所述轴向一侧开放的第一开口,所述第一轴承位于比所述第一密封组件靠所述第一开口的位置。Preferably, the first gap is formed with a first opening that opens toward the axial side, and the first bearing is located closer to the first opening than the first seal assembly.
优选地,所述径向部分通过过盈配合与所述太阳轮轴固定在一起;或者所述径向部分通过花键连接与所述太阳轮轴传动联接。Preferably, the radial portion is fixed to the sun gear shaft through an interference fit; or the radial portion is drivingly coupled to the sun gear shaft through a spline connection.
更优选地,所述太阳轮轴的径向外侧面形成有环状凸起,所述径向部分与所述环状凸起实现所述过盈配合,并且所述径向部分形成有朝向径向内侧凸出且与所述环状凸起的轴向另一侧的端面抵接的限位部,使得所述转子支架相对于所述太阳轮轴在轴向上定位。More preferably, an annular protrusion is formed on the radial outer surface of the sun gear shaft, the radial portion and the annular protrusion realize the interference fit, and the radial portion is formed with a radial direction A limit portion protruding inside and abutting the end surface on the other side in the axial direction of the ring-shaped protrusion makes the rotor bracket positioned in the axial direction relative to the sun gear shaft.
优选地,所述轮毂电机驱动***还包括设置在所述壳体盖和所述太阳轮轴之间的第二间隙的且位于所述转子支架的径向部分的轴向另一侧的第二轴承和第二密封组件。Preferably, the in-wheel motor drive system further includes a second bearing disposed at a second gap between the housing cover and the sun gear shaft and located on the other axial side of the radial portion of the rotor bracket And the second seal assembly.
更优选地,所述第二间隙形成有朝向所述轴向另一侧开放的第二开口,所述第二密封组件位于比所述第二轴承靠所述第二开口的位置。More preferably, the second gap is formed with a second opening that opens toward the other side in the axial direction, and the second seal assembly is located closer to the second opening than the second bearing.
优选地,所述行星齿轮减速器还包括位于所述太阳轮轴的径向外侧的多个行星齿轮,并且所述太阳轮轴的包括其轴向一侧端的一部分形成有与所述多个行星齿轮啮合的外齿。Preferably, the planetary gear reducer further includes a plurality of planetary gears located radially outward of the sun gear shaft, and a portion of the sun gear shaft including one axial end thereof is formed to mesh with the plurality of planet gears External teeth.
更优选地,所述第一轴承和所述第一密封组件设置于所述太阳轮轴的比所述外齿靠轴向另一侧的部位。More preferably, the first bearing and the first seal assembly are provided at a portion of the sun gear shaft on the axially other side than the external teeth.
更优选地,在所述太阳轮轴经过热处理之后对所述外齿进行轮齿修形处理。More preferably, the external teeth are subjected to gear modification after the heat treatment of the sun gear shaft.
优选地,所述太阳轮轴具有中空结构,所述轮毂电机驱动***还包括车轮轴承,所述车轮轴承以其几何中心与所述车轮受力点之间的距离最小的方式设置于所述太阳轮轴的内部。Preferably, the sun wheel shaft has a hollow structure, and the in-wheel motor drive system further includes a wheel bearing, and the wheel bearing is disposed on the sun wheel shaft in such a manner that the distance between the geometric center and the wheel stress point is minimized internal.
更优选地,所述车轮轴承的几何中心与所述车轮受力点在轴向上重叠。More preferably, the geometric center of the wheel bearing and the wheel stress point overlap in the axial direction.
本发明提供了一种如下的机动车,所述机动车的车轮包括以上技术方案中任意一项技术方案所述的轮毂电机驱动***。The present invention provides a motor vehicle whose wheels include the in-wheel motor drive system described in any one of the above technical solutions.
通过采用上述技术方案,本发明提供了一种新型的轮毂电机驱动***和包括该轮毂电机驱动***的机动车,该轮毂电机驱动***将现有技术中设置于壳体主体与转子支架之间的轴承和密封组件设置于壳体主体与太阳轮轴之间,这样不仅能够使得转子支架与现有技术的转子支架相比结构大幅简化,而且能够方便对太阳轮轴的用于设置密封组件的密封面进行处理来提高密封效果。By adopting the above technical solution, the present invention provides a new in-wheel motor drive system and a motor vehicle including the in-wheel motor drive system. The in-wheel motor drive system is provided between the housing body and the rotor bracket in the prior art. The bearing and the sealing assembly are arranged between the casing body and the sun gear shaft, which not only can greatly simplify the structure of the rotor bracket compared with the prior art rotor bracket, but also can facilitate the sealing surface of the sun gear shaft for setting the sealing assembly Treatment to improve the sealing effect.
图1是根据现有技术的轮毂电机驱动***的局部结构的剖视示意图。1 is a schematic cross-sectional view of a partial structure of a hub motor drive system according to the prior art.
图2是根据本发明的一实施方式的轮毂电机驱动***的剖视示意图。2 is a schematic cross-sectional view of an in-wheel motor drive system according to an embodiment of the present invention.
图3a是图2中的轮毂电机驱动***的局部结构的剖视示意图;图3b是图2中的轮毂电机驱动***的转子支架的剖视示意图;图3c是图2中的轮毂电机驱动***的太阳轮轴的剖视示意图。3a is a schematic cross-sectional view of the partial structure of the hub motor drive system in FIG. 2; FIG. 3b is a schematic cross-sectional view of the rotor bracket of the hub motor drive system in FIG. 2; FIG. 3c is a schematic view of the hub motor drive system in FIG. A schematic cross-sectional view of the sun gear shaft.
附图标记说明DESCRIPTION OF REFERENCE NUMERALS
10转子支架 101第一轴向部分 102第二轴向部分 102S安装面 103第三轴向部分 103S密封面 104径向部分 105台阶部分 20太阳轮轴10 Rotor bracket 101 First axial part 102 Second axial part 102S mounting surface 103 Third axial part 103S sealing surface 104 Radial part 105 Stepped part 20 Sun gear shaft
1壳体主体 2壳体盖 3驱动电机 31定子 32转子 4转子支架 41轴向部分 42径向部分 43限位部 5行星齿轮减速器 51太阳轮轴 51a第一轴承 51b第二轴承 51c第一密封组件 51d第二密封组件 51p环状凸起 51g外齿 52行星齿轮 53行星轮架 53a推力滚子轴承 54齿圈 6输出轴 61法兰部 62轴部 62a车轮轴承 62b车轮轴承锁紧螺母 6a输出轴密封组件 7转向节套筒 8传感器 9制动*** 91制动鼓 92制动盘1 Housing main body 2 Housing cover 3 Drive motor 31 Stator 32 Rotor 4 Rotor bracket 41 Axial part 42 Radial part 43 Limit part 5 Planetary gear reducer 51 Sun gear shaft 51a First bearing 51b Second bearing 51c First seal Assembly 51d second seal assembly 51p annular projection 51g external teeth 52 planetary gears 53 planetary carrier 53a thrust roller bearings 54 ring gear 6 output shaft 61 flange portion 62 shaft portion 62a wheel bearing 62b wheel bearing lock nut 6a output Shaft seal assembly 7 Knuckle sleeve 8 Sensor 9 Braking system 91 Brake drum 92 Brake disc
S安装空间 A轴向 R径向。S installation space A axis R radial direction.
以下将参照说明书附图来详细地说明本发明的具体实施方式。在本说明书中,“轴向”、“径向”和“周向”分别是指轮毂电机驱动***的壳体组件(包括壳体主体和壳体盖)的轴向、径向和周向,轴向一侧是指图2至图3c中的左侧,轴向另一侧是指图2至图3c中的右侧。另外,“车轮受力点”是指车轮中间面与车轮中心轴线之间的交点在轮胎接地面上的投影,“传动联接”是指两个部件之间通过固定连接结构或传动机构能够实现驱动力/扭矩的传递。Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings of the specification. In this specification, "axial", "radial" and "circumferential" refer to the axial, radial and circumferential directions of the housing assembly (including the housing body and housing cover) of the hub motor drive system, One axial side refers to the left side in FIGS. 2 to 3c, and the other axial side refers to the right side in FIGS. 2 to 3c. In addition, "wheel stress point" refers to the projection of the intersection between the wheel midplane and the center axis of the wheel on the tire ground surface, and "transmission coupling" refers to the drive between the two components through a fixed connection structure or transmission mechanism. Force / torque transmission.
如图2所示,根据本发明的一实施方式的轮毂电机驱动***包括组装在一起的壳体组件(包括壳体主体1和壳体盖2)、驱动电机3、转子支架4、行星齿轮减速器5和输出轴6。As shown in FIG. 2, the in-wheel motor drive system according to an embodiment of the present invention includes a housing assembly (including a housing body 1 and a housing cover 2) assembled together, a driving motor 3, a rotor bracket 4, and planetary gear reduction器 5 和 output 轴 6。 5 and the output shaft 6.
在本实施方式中,由壳体主体1和壳体盖2构成的壳体组件整体呈大致筒状。壳体主体1位于壳体盖2的轴向一侧且形成有朝向轴向另一侧的开口。壳体盖2在轴向A上与壳体主体1相对并且以盖住壳体主体1的开口的方式与壳体主体1组装在一起,使得壳体主体1和壳体盖2包围形成安装空间S。壳体主 体1的与开口相对的底部形成为弯折形状并且壳体盖2也形成为弯折形状,使得壳体主体1和壳体盖2之间的安装空间S在轴向A上的尺寸从径向外侧朝向径向内侧减小。另外,壳体主体1与壳体盖2均在中央处形成通孔以供下述的太阳轮轴51等部件穿过。In this embodiment, the entire housing assembly composed of the housing body 1 and the housing cover 2 has a substantially cylindrical shape. The housing body 1 is located on one side of the housing cover 2 in the axial direction and is formed with an opening toward the other side in the axial direction. The housing cover 2 is opposed to the housing body 1 in the axial direction A and assembled with the housing body 1 in such a manner as to cover the opening of the housing body 1, so that the housing body 1 and the housing cover 2 surround to form an installation space S. The bottom of the housing body 1 opposite to the opening is formed in a bent shape and the housing cover 2 is also formed in a bent shape so that the dimension of the installation space S between the housing body 1 and the housing cover 2 in the axial direction A It decreases from the radially outer side toward the radially inner side. In addition, both the casing body 1 and the casing cover 2 are formed with a through hole at the center for passing through the sun gear shaft 51 and other components described below.
在本实施方式中,驱动电机3整体收纳于安装空间S内。驱动电机3包括均呈圆环状的定子31和转子32。In this embodiment, the entire drive motor 3 is accommodated in the installation space S. The drive motor 3 includes a stator 31 and a rotor 32 each having an annular shape.
具体地,定子31位于壳体主体1的径向内侧且相对于壳体主体1固定,定子31与壳体主体1的外周部之间优选设置有冷却组件,以用于降低定子31在驱动电机3的工作过程中的温度。Specifically, the stator 31 is located on the radially inner side of the housing body 1 and fixed relative to the housing body 1, and a cooling assembly is preferably provided between the stator 31 and the outer periphery of the housing body 1 to reduce the stator 31 in the drive motor 3 The temperature during work.
转子32位于定子31的径向内侧且与定子31在径向R上相对。转子32能够相对于定子31转动,使得当定子31产生磁场的情况下转子32能够在该磁场中转动。The rotor 32 is located radially inward of the stator 31 and is opposed to the stator 31 in the radial direction R. The rotor 32 can rotate relative to the stator 31 so that the rotor 32 can rotate in the magnetic field when the stator 31 generates a magnetic field.
在本实施方式中,转子支架4用于支撑转子32且整体具有圆筒形状。进一步如图3a和图3b所示,该转子支架4包括轴向部分41、径向部分42和限位部43。In this embodiment, the rotor holder 4 supports the rotor 32 and has a cylindrical shape as a whole. As further shown in FIGS. 3a and 3b, the rotor bracket 4 includes an axial portion 41, a radial portion 42 and a limiting portion 43.
具体地,轴向部分41沿着轴向A延伸,并且该轴向部分41从径向内侧固定于转子32以支撑转子32。该轴向部分41在轴向A上的长度与转子32的在轴向A上的长度大致相等。Specifically, the axial portion 41 extends along the axial direction A, and the axial portion 41 is fixed to the rotor 32 from the radially inner side to support the rotor 32. The length of the axial portion 41 in the axial direction A is substantially equal to the length of the rotor 32 in the axial direction A.
径向部分42从轴向部分41的在轴向A上的大致中央部朝向径向内侧延伸并从安装空间S伸出以与下述的太阳轮轴51固定在一起。该径向部分42的径向内侧端部形成了在轴向A上的尺寸较大的加厚部并用于与太阳轮轴51的环状凸起51p通过例如过盈配合固定在一起。在本实施方式,径向部分42的轴向一侧的表面没有任何凸起形状。The radial portion 42 extends radially inward from a substantially central portion of the axial portion 41 in the axial direction A and extends from the installation space S to be fixed with the sun gear shaft 51 described below. The radially inner end of the radial portion 42 forms a thickened portion having a larger size in the axial direction A and is used to fix the annular protrusion 51p of the sun gear shaft 51 by interference fit, for example. In this embodiment, the surface on the axial side of the radial portion 42 does not have any convex shape.
限位部43从加厚部朝向径向内侧延伸并且用于从轴向另一侧抵接于太 阳轮轴51的环状凸起51p,从而在轴向A上限定转子支架4相对于太阳轮轴51的位置。The limiting portion 43 extends radially inward from the thickened portion and serves to abut against the annular projection 51p of the sun gear shaft 51 from the other side in the axial direction, thereby defining the rotor holder 4 relative to the sun gear shaft 51 in the axial direction A s position.
这样,根据本发明的轮毂电机驱动***的转子支架4与图1中示出的现有技术的转子支架10相比结构简化很多,更容易进行加工处理。In this way, the rotor bracket 4 of the in-wheel motor drive system according to the present invention has a much simplified structure compared to the conventional rotor bracket 10 shown in FIG. 1 and is easier to process.
在本实施方式中,行星齿轮减速器5整***于壳体主体1和壳体盖2包围形成的安装空间S的外部并且行星齿轮减速器5整体配置在定子31的径向内侧,该行星齿轮减速器5与驱动电机3同轴地配置。进一步地,该行星齿轮减速器5包括彼此组装在一起的太阳轮轴51、多个行星齿轮52、行星轮架53和齿圈54,其中太阳轮轴51的一部分、多个行星齿轮52、行星轮架53和齿圈54均配置在转子32的轴向一侧。也就是说,行星齿轮减速器5的除了太阳轮轴51的另一部分以外的其它结构均配置在转子32的轴向一侧。这样,能够确保行星齿轮减速器5能够填充更多的油,使得润滑性能和冷却性能更好。In the present embodiment, the planetary gear reducer 5 is entirely located outside the installation space S formed by the housing body 1 and the housing cover 2 and the planetary gear reducer 5 is entirely disposed radially inward of the stator 31, and the planetary gear reducer The device 5 is arranged coaxially with the drive motor 3. Further, the planetary gear reducer 5 includes a sun gear shaft 51, a plurality of planet gears 52, a planet gear carrier 53 and a ring gear 54 assembled with each other, wherein a part of the sun gear shaft 51, a plurality of planet gears 52, a planet gear carrier Both the 53 and the ring gear 54 are arranged on the axial side of the rotor 32. In other words, the other structures of the planetary gear reducer 5 except for the other part of the sun gear shaft 51 are arranged on the axial side of the rotor 32. In this way, it can be ensured that the planetary gear reducer 5 can be filled with more oil, so that the lubricating performance and cooling performance are better.
具体地,该太阳轮轴51为空心轴,并且太阳轮轴51沿着轴向A延伸穿过壳体主体1和壳体盖2的中央通孔,使得太阳轮轴51与壳体主体1和壳体盖2两者在轴向A上均重叠。Specifically, the sun gear shaft 51 is a hollow shaft, and the sun gear shaft 51 extends through the central through holes of the housing body 1 and the housing cover 2 along the axial direction A, so that the sun gear shaft 51 and the housing body 1 and the housing cover 2 Both overlap in the axial direction A.
在径向R上,太阳轮轴51与壳体主体1之间形成第一间隙,并且太阳轮轴51与壳体盖2之间形成第二间隙。在第一间隙内设置有在轴向A上排列的第一轴承51a和第一密封组件51c,在第二间隙内设置有在轴向A上排列的第二轴承51b和第二密封组件51d。两个轴承51a、51b均为径向轴承并且用于在径向R上支撑太阳轮轴51相对于壳体主体1和壳体盖2的转动。两个密封组件51c、51d均具有环状形状,第一密封组件51c优选地通过过盈配合装配于壳体主体1,第二密封组件51d优选地通过过盈配合装配于壳体盖2,并且两个密封组件51c、51d用于防止外部物质(包括润滑介质)进入安装空间S。在轴向A上,第一轴承51a和第一密封组件51c两者与第二轴承51b和第二密封组件51d 两者被转子支架4的径向部分42分隔开。In the radial direction R, a first gap is formed between the sun gear shaft 51 and the housing body 1, and a second gap is formed between the sun gear shaft 51 and the housing cover 2. The first bearing 51a and the first seal assembly 51c arranged in the axial direction A are provided in the first gap, and the second bearing 51b and the second seal assembly 51d are arranged in the axial direction A in the second gap. Both bearings 51a, 51b are radial bearings and are used to support the rotation of the sun gear shaft 51 relative to the housing body 1 and the housing cover 2 in the radial direction R. Both sealing assemblies 51c, 51d have an annular shape, the first sealing assembly 51c is preferably fitted to the housing body 1 by an interference fit, and the second sealing assembly 51d is preferably fitted to the housing cover 2 by an interference fit, and The two seal assemblies 51c, 51d are used to prevent foreign substances (including lubricating media) from entering the installation space S. In the axial direction A, both the first bearing 51 a and the first seal assembly 51 c are separated from the second bearing 51 b and the second seal assembly 51 d by the radial portion 42 of the rotor bracket 4.
在轴向A上,第一轴承51a位于第一密封组件51c的轴向一侧。也就是说,第一轴承51a比第一密封组件51c更靠近第一间隙的朝向轴向一侧开放的开口。这样,流入第一间隙的润滑介质能够对第一轴承51a提供润滑作用。在轴向A上,第二密封组件51d位于第二轴承51b的轴向另一侧。也就是说,第二密封组件51d比第二轴承51b更靠近第二间隙的朝向轴向另一侧开放的开口。In the axial direction A, the first bearing 51a is located on the axial side of the first seal assembly 51c. That is, the first bearing 51a is closer to the opening of the first gap toward the axial side than the first seal assembly 51c. In this way, the lubricating medium flowing into the first gap can provide a lubricating effect to the first bearing 51a. In the axial direction A, the second seal assembly 51d is located on the other axial side of the second bearing 51b. That is, the second seal assembly 51d is closer to the opening of the second gap toward the other side in the axial direction than the second bearing 51b.
进一步地,太阳轮轴51的径向外侧面形成有环状凸起51p,该环状凸起51p与转子支架4的径向部分42实现过盈配合,从而将转子支架4固定于太阳轮轴51。转子支架4的限位部43与环状凸起51p的轴向另一侧的端面抵接,使得转子支架4相对于太阳轮轴51在轴向A上定位。Further, a ring-shaped protrusion 51p is formed on the radial outer surface of the sun gear shaft 51. The ring-shaped protrusion 51p and the radial portion 42 of the rotor bracket 4 have an interference fit, thereby fixing the rotor bracket 4 to the sun gear shaft 51. The limiting portion 43 of the rotor holder 4 abuts on the axially opposite end surface of the annular protrusion 51p, so that the rotor holder 4 is positioned in the axial direction A relative to the sun gear shaft 51.
另外,太阳轮轴51的与多个行星齿轮52相对的部分形成有与行星齿轮52配合的外齿51g。这种在太阳轮轴51上直接形成外齿51g的方案与现有技术中太阳轮轴与太阳轮独立制造并装配在一起的方案实现起来要更简单容易。另外,在对太阳轮轴51进行加工的过程中,在太阳轮轴51经过热处理之后还可以容易地对外齿51g进行轮齿修形处理,从而能够优化轮齿的NVH问题。在本实施方式中,第一轴承51a和第一密封组件51c设置于太阳轮轴51的比外齿51g靠轴向另一侧的部位。优选地,可以对太阳轮轴51的用于设置第一密封组件51c以及第二密封组件51d的部位进行表面处理,以提高密封性能。In addition, a portion of the sun gear shaft 51 facing the plurality of planet gears 52 is formed with external teeth 51g that are engaged with the planet gears 52. This solution of directly forming the external teeth 51g on the sun gear shaft 51 is simpler and easier to implement than the prior art solutions in which the sun gear shaft and the sun gear are independently manufactured and assembled together. In addition, in the process of processing the sun gear shaft 51, after the sun gear shaft 51 is heat-treated, it is also possible to easily perform gear tooth modification on the external teeth 51g, so that the NVH problem of the gear teeth can be optimized. In this embodiment, the first bearing 51a and the first seal assembly 51c are provided on the sun shaft 51 on the axially other side than the external teeth 51g. Preferably, the part of the sun gear shaft 51 where the first seal assembly 51c and the second seal assembly 51d are provided can be surface-treated to improve the sealing performance.
多个行星齿轮52位于太阳轮轴51的径向外侧且沿着周向均匀分布,各行星齿轮52均形成有与太阳轮轴51的外齿51g啮合的齿,使得随着太阳轮轴51的转动各行星齿轮52能够进行绕着各自的中心轴的自转和绕着太阳轮轴51的公转。A plurality of planet gears 52 are located radially outside of the sun gear shaft 51 and are evenly distributed along the circumferential direction. Each planet gear 52 is formed with teeth meshing with the external teeth 51g of the sun gear shaft 51 so that each planet will rotate as the sun gear shaft 51 rotates The gear 52 is capable of rotating around its respective central axis and revolving around the sun gear shaft 51.
行星轮架53位于太阳轮轴51的径向外侧,并且该行星轮架53在安装多个 行星齿轮52的同时固定于输出轴6。随着行星齿轮52进行公转,能够带动行星轮架53进行转动进而带动输出轴6转动。The planetary carrier 53 is located radially outward of the sun gear shaft 51, and the planetary carrier 53 is fixed to the output shaft 6 while mounting a plurality of planet gears 52. As the planetary gear 52 revolves, it can drive the planetary carrier 53 to rotate and then drive the output shaft 6 to rotate.
齿圈54位于多个行星齿轮52的径向外侧并且固定于壳体主体1,在齿圈54和太阳轮轴51之间形成供多个行星齿轮52公转的轨道,齿圈54形成有与多个行星齿轮52的齿啮合的齿。The ring gear 54 is located radially outward of the plurality of planet gears 52 and is fixed to the housing body 1, and a track for the plurality of planet gears 52 to revolve is formed between the ring gear 54 and the sun gear shaft 51. The ring gear 54 is formed with a plurality of The teeth of the planet gear 52 mesh.
在本实施方式中,输出轴6为法兰轴,该输出轴6包括形成为一体的法兰部61和轴部62,输出轴6与行星齿轮减速器5同轴地配置。In the present embodiment, the output shaft 6 is a flanged shaft. The output shaft 6 includes a flange portion 61 and a shaft portion 62 that are formed integrally. The output shaft 6 is arranged coaxially with the planetary gear reducer 5.
法兰部61形成为圆盘形状并且从轴部62朝向径向外侧延伸,该法兰部61通过固定件与行星轮架53固定在一起,使得整个输出轴6都能够随着行星轮架53的转动而转动。The flange portion 61 is formed in a disk shape and extends radially outward from the shaft portion 62. The flange portion 61 is fixed to the planetary carrier 53 by a fixing member, so that the entire output shaft 6 can follow the planetary carrier 53 Turns while turning.
轴部62从法兰部61的中央朝向轴向另一侧伸出并且沿着轴向延伸到中空的太阳轮轴51的内部。车轮轴承62a从径向外侧套装于轴部62,并且车轮轴承62a与驱动电机3和行星齿轮减速器5同轴地配置。另外,车轮轴承62a配置在太阳轮轴51的内部。这样,能够将车轮轴承62a的几何中心在轮胎接地面上的投影配置成与车轮受力点大致重合,有利于稳定性的提高并且能够避免现有技术中输出轴的大幅变形问题。The shaft portion 62 protrudes from the center of the flange portion 61 toward the other side in the axial direction and extends into the inside of the hollow sun gear shaft 51 in the axial direction. The wheel bearing 62a is fitted to the shaft portion 62 from the outside in the radial direction, and the wheel bearing 62a is arranged coaxially with the drive motor 3 and the planetary gear reducer 5. In addition, the wheel bearing 62 a is arranged inside the sun gear shaft 51. In this way, the projection of the geometric center of the wheel bearing 62a on the tire ground contact surface can be arranged to substantially coincide with the wheel stress point, which is beneficial to the improvement of stability and avoids the problem of large-scale deformation of the output shaft in the prior art.
在本实施方式中,通过车轮轴承锁紧螺母62b与法兰部61配合能够将车轮轴承62a安装于轴部62。另外,该车轮轴承62a为球轴承,优选为双列球轴承,使得车轮轴承62a工作时的摩擦力小,提高驱动***的效率。In this embodiment, the wheel bearing 62 a can be attached to the shaft portion 62 by the wheel bearing lock nut 62 b cooperating with the flange portion 61. In addition, the wheel bearing 62a is a ball bearing, preferably a double row ball bearing, so that the friction force of the wheel bearing 62a during operation is small, and the efficiency of the drive system is improved.
通过采用上述构造,一方面,能够使得驱动力/扭矩顺次经由该轮毂电机驱动***中的转子32、转子支架4、太阳轮轴51、行星齿轮52和行星轮架53传递到输出轴6以驱动轮毂,从而最终驱动车轮。这样,驱动电机3不经由传统的位于车轮外的变速器和驱动轴而直接驱动机动车的车轮,因此相比现有技术的机动车的驱动***缩短了驱动力/扭矩的传递路径,使得提高了驱动 ***的效率并且减小了传递过程中的能量损耗。By adopting the above configuration, on the one hand, the driving force / torque can be sequentially transmitted to the output shaft 6 via the rotor 32, rotor bracket 4, sun gear shaft 51, planet gear 52, and planet gear carrier 53 in the in-wheel motor drive system to drive The hub, which ultimately drives the wheel. In this way, the drive motor 3 directly drives the wheels of the motor vehicle without passing through the conventional transmission and drive shaft outside the wheels, so the transmission path of the driving force / torque is shortened compared to the drive system of the prior art motor vehicle, so that the improvement Drive the efficiency of the system and reduce the energy loss in the transmission process.
另一方面,驱动电机3、行星齿轮减速器5、车轮轴承62a和输出轴6同轴地配置,能够极大地节省由轮毂电机驱动***所占据的空间,并且轮毂电机驱动***与车轮整合在一起,这便于车辆的布局并且减小在车辆处于颠簸和转向情况下空间干涉的影响。On the other hand, the coaxial arrangement of the drive motor 3, planetary gear reducer 5, wheel bearing 62a and output shaft 6 can greatly save the space occupied by the hub motor drive system, and the hub motor drive system is integrated with the wheels This facilitates the layout of the vehicle and reduces the effects of spatial interference when the vehicle is in bumps and turns.
在本实施方式中,轮毂电机驱动***还可以包括转向节套筒7、传感器8和制动***9。In this embodiment, the in-wheel motor drive system may further include a knuckle sleeve 7, a sensor 8, and a braking system 9.
转向节套筒7位于太阳轮轴51和车轮轴承62a之间,以配合转向节组件的其它部件实现对车轮的转向控制。The knuckle sleeve 7 is located between the sun axle 51 and the wheel bearing 62a to cooperate with other components of the knuckle assembly to achieve steering control of the wheels.
传感器8设置于上述安装空间S内并且设置于壳体盖2和转子支架4,该传感器8用于监测驱动电机3的转速等的参数。The sensor 8 is provided in the installation space S and is provided in the housing cover 2 and the rotor bracket 4. The sensor 8 is used to monitor parameters such as the rotation speed of the drive motor 3.
制动***9位于太阳轮轴51的轴向另一侧且位于壳体盖2的径向内侧,该制动***9包括从径向外侧外套于转向节套筒7的制动鼓91和制动盘92,制动鼓91和制动盘92在轴向A上彼此相对且相互配合以能够对轮毂电机驱动***实施制动。The braking system 9 is located on the other side in the axial direction of the sun gear shaft 51 and on the radially inner side of the housing cover 2. The braking system 9 includes a brake drum 91 and a brake that are sleeved on the knuckle sleeve 7 from the radially outer side The disc 92, the brake drum 91 and the brake disc 92 are opposed to each other in the axial direction A and cooperate with each other to be able to brake the in-wheel motor drive system.
本发明还提供了一种机动车,该机动车的车轮包括具有以上结构的轮毂电机驱动***。The present invention also provides a motor vehicle whose wheel includes a hub motor drive system having the above structure.
以上详细地说明了根据本发明的轮毂电机驱动***的具体实施方式,但是还需要补充说明的是:The specific embodiment of the in-wheel motor drive system according to the present invention has been described in detail above, but it needs to be supplemented that:
I.根据本发明的轮毂电机驱动***还可以包括在上述具体实施方式中未进行说明的其它必要的部件。I. The in-wheel motor drive system according to the present invention may further include other necessary components that are not described in the above specific embodiments.
举例来说,除了上述密封组件51c、51d以外,还可以在该轮毂电机驱动***中必要的部位设置其它密封组件,例如,在输出轴6的法兰部61与壳体主体1之间可以设置有密封组件6a,在法兰部61与太阳轮轴51之间也可以设 置有密封组件6a。这些密封组件6a的主要作用在于隔离驱动***中不同空间,使得例如油等的介质在由这些密封组件6a分隔的空间之间不会流通。For example, in addition to the above-mentioned seal assemblies 51c and 51d, other seal assemblies may be provided at necessary locations in the in-wheel motor drive system, for example, between the flange portion 61 of the output shaft 6 and the housing body 1 There is a seal assembly 6a, and a seal assembly 6a may be provided between the flange portion 61 and the sun gear shaft 51. The main function of these seal assemblies 6a is to isolate different spaces in the drive system so that media such as oil will not circulate between the spaces separated by these seal assemblies 6a.
另外,还可以在壳体主体1与行星轮架53之间的轴向间隙内设置推力滚子轴承53a,以在轴向A上支撑行星轮架53。In addition, a thrust roller bearing 53a may be provided in the axial gap between the housing body 1 and the planetary carrier 53 to support the planetary carrier 53 in the axial direction A.
II.虽然在以上的具体实施方式中说明了转子支架4与太阳轮轴51通过过盈配合固定在一起,但是本发明不限于此。实际上,只要转子支架4与太阳轮轴51实现传动联接以使得太阳轮轴51能够随着转子支架4转动即可,因此转子支架4与太阳轮轴51之间可以采用花键连接的方式实现传动联接或者也可以采用与现有技术相同的焊接技术。II. Although it has been described in the above specific embodiments that the rotor bracket 4 and the sun gear shaft 51 are fixed together by an interference fit, the present invention is not limited to this. In fact, as long as the rotor bracket 4 and the sun gear shaft 51 achieve transmission coupling so that the sun gear shaft 51 can rotate with the rotor bracket 4, the rotor bracket 4 and the sun gear shaft 51 can be splined to achieve transmission coupling or The same welding technique as in the prior art can also be used.
III.虽然在以上的具体实施方式中说明了车轮轴承62a的几何中心在轮胎接地面上的投影配置成与车轮受力点大致重合,但是在很多情况下不能实现上述重合的效果。因此,只要能够满足车轮轴承62a的几何中心与车轮受力点之间的距离尽可能地小就实现了本发明的技术思想。III. Although the above specific embodiment has explained that the projection of the geometric center of the wheel bearing 62a on the tire ground contact surface is substantially coincident with the wheel stress point, in many cases, the above-mentioned coincidence effect cannot be achieved. Therefore, the technical idea of the present invention is realized as long as the distance between the geometric center of the wheel bearing 62a and the wheel stress point is as small as possible.
Claims (12)
- 一种轮毂电机驱动***,所述轮毂电机驱动***包括:A hub motor drive system. The hub motor drive system includes:壳体组件,所述壳体组件包括在轴向上彼此相对地组装在一起的壳体主体和壳体盖,所述壳体组件的内部形成有安装空间;A housing assembly including a housing body and a housing cover assembled together opposite to each other in the axial direction, and an installation space is formed inside the housing assembly;驱动电机,所述驱动电机收纳于所述安装空间内,所述驱动电机包括相对于所述壳体主体固定的定子和位于所述定子的径向内侧且能够相对于所述定子转动的转子;A drive motor, the drive motor being accommodated in the installation space, the drive motor including a stator fixed relative to the housing body and a rotor located radially inward of the stator and capable of rotating relative to the stator;转子支架,所述转子支架从径向内侧支撑所述转子且固定于所述转子;以及A rotor bracket that supports the rotor from the radially inner side and is fixed to the rotor; and行星齿轮减速器,所述行星齿轮减速器位于所述安装空间的外部,并且所述行星齿轮减速器还包括与所述转子支架传动联接以能够随着所述转子支架转动的太阳轮轴,A planetary gear reducer located outside the installation space, and the planetary gear reducer further includes a sun gear shaft drivingly coupled with the rotor bracket to be able to rotate with the rotor bracket,其中,所述转子支架包括沿着轴向延伸的轴向部分和从所述轴向部分朝向径向内侧延伸的径向部分,所述轴向部分固定支撑所述转子,所述径向部分与所述太阳轮轴传动联接,所述轮毂电机驱动***还包括设置在所述壳体主体和所述太阳轮轴之间的第一间隙的且位于所述转子支架的径向部分的轴向一侧的第一轴承和第一密封组件。Wherein, the rotor bracket includes an axial portion extending axially and a radial portion extending radially inward from the axial portion, the axial portion fixedly supports the rotor, and the radial portion is The sun gear shaft drive coupling, the hub motor drive system further includes a first gap disposed between the housing body and the sun gear shaft and located on an axial side of the radial portion of the rotor bracket The first bearing and the first seal assembly.
- 根据权利要求1所述的轮毂电机驱动***,其特征在于,所述第一间隙形成有朝向所述轴向一侧开放的第一开口,所述第一轴承位于比所述第一密封组件靠所述第一开口的位置。The in-wheel motor drive system according to claim 1, wherein the first gap is formed with a first opening that opens toward the axial side, and the first bearing is located closer to the first seal assembly The location of the first opening.
- 根据权利要求1或2所述的轮毂电机驱动***,其特征在于,The in-wheel motor drive system according to claim 1 or 2, wherein所述径向部分通过过盈配合与所述太阳轮轴固定在一起;或者The radial portion is fixed to the sun gear shaft through an interference fit; or所述径向部分通过花键连接与所述太阳轮轴传动联接。The radial portion is drivingly coupled with the sun gear shaft through a spline connection.
- 根据权利要求3所述的轮毂电机驱动***,其特征在于,所述太阳轮轴的径向外侧面形成有环状凸起,所述径向部分与所述环状凸起实现所述过 盈配合,并且The in-wheel motor drive system according to claim 3, wherein an annular protrusion is formed on the radial outer surface of the sun gear shaft, and the radial portion and the annular protrusion realize the interference fit ,and所述径向部分形成有朝向径向内侧凸出且与所述环状凸起的轴向另一侧的端面抵接的限位部,使得所述转子支架相对于所述太阳轮轴在轴向上定位。The radial portion is formed with a limiting portion that protrudes toward the radially inner side and abuts against the other end surface of the annular protrusion in the axial direction, so that the rotor bracket is axially oriented with respect to the sun gear shaft Up positioning.
- 根据权利要求1至4中任一项所述的轮毂电机驱动***,其特征在于,所述轮毂电机驱动***还包括设置在所述壳体盖和所述太阳轮轴之间的第二间隙的且位于所述转子支架的径向部分的轴向另一侧的第二轴承和第二密封组件。The in-wheel motor drive system according to any one of claims 1 to 4, wherein the in-wheel motor drive system further includes a second gap provided between the housing cover and the sun gear shaft and A second bearing and a second seal assembly located on the other axial side of the radial portion of the rotor bracket.
- 根据权利要求5所述的轮毂电机驱动***,其特征在于,所述第二间隙形成有朝向所述轴向另一侧开放的第二开口,所述第二密封组件位于比所述第二轴承靠所述第二开口的位置。The in-wheel motor drive system according to claim 5, wherein the second gap is formed with a second opening that is open toward the other side in the axial direction, and the second seal assembly is located more than the second bearing By the position of the second opening.
- 根据权利要求1至6中任一项所述的轮毂电机驱动***,其特征在于,所述行星齿轮减速器还包括位于所述太阳轮轴的径向外侧的多个行星齿轮,并且所述太阳轮轴的包括其轴向一侧端的一部分形成有与所述多个行星齿轮啮合的外齿。The in-wheel motor drive system according to any one of claims 1 to 6, wherein the planetary gear reducer further includes a plurality of planetary gears located radially outward of the sun gear shaft, and the sun gear shaft A portion including one axial end thereof is formed with external teeth meshing with the plurality of planet gears.
- 根据权利要求7所述的轮毂电机驱动***,其特征在于,所述第一轴承和所述第一密封组件设置于所述太阳轮轴的比所述外齿靠轴向另一侧的部位。The in-wheel motor drive system according to claim 7, wherein the first bearing and the first seal assembly are provided at a portion of the sun gear shaft on the axially other side than the external teeth.
- 根据权利要求7或8所述的轮毂电机驱动***,其特征在于,在所述太阳轮轴经过热处理之后对所述外齿进行轮齿修形处理。The in-wheel motor drive system according to claim 7 or 8, wherein the external teeth are subjected to gear modification after the heat treatment of the sun gear shaft.
- 根据权利要求1至9中任一项所述的轮毂电机驱动***,其特征在于,所述太阳轮轴具有中空结构,所述轮毂电机驱动***还包括车轮轴承,所述车轮轴承以其几何中心与所述车轮受力点之间的距离最小的方式设置于所述太阳轮轴的内部。The in-wheel motor drive system according to any one of claims 1 to 9, wherein the sun gear shaft has a hollow structure, and the in-wheel motor drive system further includes a wheel bearing, the wheel bearing having a geometric center The distance between the stress points of the wheels is set inside the sun gear shaft so as to be the smallest.
- 根据权利要求10所述的轮毂电机驱动***,其特征在于,所述车轮轴承的几何中心与所述车轮受力点在轴向上重叠。The in-wheel motor drive system according to claim 10, wherein the geometric center of the wheel bearing and the wheel stress point overlap in the axial direction.
- 一种机动车,所述机动车的车轮包括权利要求1至11中任一项所述的轮毂电机驱动***。A motor vehicle whose wheels include the in-wheel motor drive system according to any one of claims 1 to 11.
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CN201980087221.8A CN113226821A (en) | 2018-11-13 | 2019-03-13 | In-wheel motor driving system and motor vehicle |
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CN201811348660.3A CN111169274A (en) | 2018-11-13 | 2018-11-13 | In-wheel motor driving system and motor vehicle |
CN201811348660.3 | 2018-11-13 |
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PCT/CN2019/077943 WO2020098190A1 (en) | 2018-11-13 | 2019-03-13 | Hub motor drive system and motor vehicle |
PCT/CN2019/114248 WO2020098494A1 (en) | 2018-11-13 | 2019-10-30 | Wheel hub motor drive system and motor vehicle |
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WO2022113936A1 (en) * | 2020-11-27 | 2022-06-02 | 株式会社デンソー | Dynamo-electric machine |
CN112498088A (en) * | 2020-11-30 | 2021-03-16 | 烟台大学 | Novel in-wheel motor driving system |
CN112622604B (en) * | 2020-12-30 | 2022-07-19 | 徐工集团工程机械股份有限公司 | Device and method for improving steering performance of four-wheel independent drive wheel carrier adjustable vehicle |
CN117597249A (en) * | 2021-09-07 | 2024-02-23 | 舍弗勒技术股份两合公司 | In-wheel motor driving system and vehicle |
DE102021130216A1 (en) * | 2021-11-18 | 2023-05-25 | Schwäbische Hüttenwerke Automotive GmbH | Pump-motor unit with centered stator |
CN114337078B (en) * | 2022-02-14 | 2023-09-15 | 吉林大学 | Dual-rotor hub motor two-gear speed change system based on dual electromagnetic clutch |
CN114604079B (en) * | 2022-03-29 | 2023-05-05 | 北京航空航天大学 | Wheel structure with built-in speed reducer and motor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103434385A (en) * | 2013-08-13 | 2013-12-11 | 安徽工程大学 | Hub motor driving device |
CN105599591A (en) * | 2014-11-24 | 2016-05-25 | 舍弗勒技术有限两合公司 | Wheel hub drive assembly |
CN106828076A (en) * | 2017-03-31 | 2017-06-13 | 重庆大学 | Electric wheel hub with wheel-side reduction device |
JP6194750B2 (en) * | 2013-10-25 | 2017-09-13 | 株式会社ジェイテクト | Braking and driving device for vehicle |
CN107171489A (en) * | 2017-07-04 | 2017-09-15 | 李燊 | Wheel hub electric motor of electric vehicle and wheel hub electric motor of electric vehicle control method |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006213182A (en) * | 2005-02-03 | 2006-08-17 | Ntn Corp | Electric type wheel driving device |
CN200953505Y (en) * | 2006-10-09 | 2007-09-26 | 上海燃料电池汽车动力***有限公司 | Composite axle planetary frame outputting external rotor hub electric machine structure |
JP5677141B2 (en) * | 2011-03-08 | 2015-02-25 | 本田技研工業株式会社 | In-wheel type wheel drive device |
JP5792015B2 (en) * | 2011-09-27 | 2015-10-07 | Ntn株式会社 | In-wheel motor drive device |
KR101959078B1 (en) * | 2012-08-17 | 2019-03-15 | 삼성전자 주식회사 | In-wheel actuator and in-wheel assembly comprising the same |
JP6341768B2 (en) * | 2014-06-11 | 2018-06-13 | 株式会社 神崎高級工機製作所 | Electric motor drive device |
CN105691185B (en) * | 2014-11-24 | 2020-04-10 | 舍弗勒技术有限两合公司 | Hub drive assembly |
CN105656246B (en) * | 2014-11-28 | 2020-09-29 | 舍弗勒技术有限两合公司 | Wheel hub motor assembly with planetary reducer, planetary reducer and motor vehicle |
JP2017158403A (en) * | 2016-03-04 | 2017-09-07 | 株式会社ジェイテクト | vehicle |
JP2017222251A (en) * | 2016-06-14 | 2017-12-21 | 株式会社ジェイテクト | Drive unit and wheel comprising the same |
CN106926690B (en) * | 2017-03-23 | 2019-07-02 | 重庆大学 | Electric vehicle hub driving device |
CN107284225A (en) * | 2017-06-05 | 2017-10-24 | 山东理工大学 | A kind of two-shift automatic variable speed In-wheel motor driving system |
CN107196450B (en) * | 2017-07-04 | 2023-06-23 | 江苏派迪车辆技术有限公司 | Hub motor |
CN108146145B (en) * | 2017-08-28 | 2020-08-18 | 北京理工大学 | Electric wheel with large-gear-ratio planetary reducer and vehicle |
CN108340768B (en) * | 2018-04-09 | 2020-06-02 | 清华大学 | Electric wheel assembly of integrated hub motor |
CN108544917A (en) * | 2018-05-15 | 2018-09-18 | 北京理工大学 | A kind of Electric Motor Wheel and vehicle |
-
2018
- 2018-11-13 CN CN201811348660.3A patent/CN111169274A/en active Pending
-
2019
- 2019-03-13 CN CN201980087221.8A patent/CN113226821A/en active Pending
- 2019-03-13 WO PCT/CN2019/077943 patent/WO2020098190A1/en active Application Filing
- 2019-10-30 WO PCT/CN2019/114248 patent/WO2020098494A1/en active Application Filing
- 2019-10-30 DE DE112019005658.1T patent/DE112019005658T5/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103434385A (en) * | 2013-08-13 | 2013-12-11 | 安徽工程大学 | Hub motor driving device |
JP6194750B2 (en) * | 2013-10-25 | 2017-09-13 | 株式会社ジェイテクト | Braking and driving device for vehicle |
CN105599591A (en) * | 2014-11-24 | 2016-05-25 | 舍弗勒技术有限两合公司 | Wheel hub drive assembly |
CN106828076A (en) * | 2017-03-31 | 2017-06-13 | 重庆大学 | Electric wheel hub with wheel-side reduction device |
CN107171489A (en) * | 2017-07-04 | 2017-09-15 | 李燊 | Wheel hub electric motor of electric vehicle and wheel hub electric motor of electric vehicle control method |
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WO2020098494A1 (en) | 2020-05-22 |
DE112019005658T5 (en) | 2021-08-05 |
CN113226821A (en) | 2021-08-06 |
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