CN117284068A - Distributed driving system and driving assembly of vehicle - Google Patents

Distributed driving system and driving assembly of vehicle Download PDF

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Publication number
CN117284068A
CN117284068A CN202311301373.8A CN202311301373A CN117284068A CN 117284068 A CN117284068 A CN 117284068A CN 202311301373 A CN202311301373 A CN 202311301373A CN 117284068 A CN117284068 A CN 117284068A
Authority
CN
China
Prior art keywords
gear train
output shaft
planetary gear
drive motor
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311301373.8A
Other languages
Chinese (zh)
Inventor
雷君
薛龙
郭振戈
王江林
朱哲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Motor Corp
Original Assignee
Dongfeng Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongfeng Motor Corp filed Critical Dongfeng Motor Corp
Priority to CN202311301373.8A priority Critical patent/CN117284068A/en
Publication of CN117284068A publication Critical patent/CN117284068A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • 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
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • 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
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • 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
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders

Abstract

The invention provides a distributed driving system of a vehicle, which relates to the field of vehicle driving systems, and comprises: the first driving system comprises a first driving motor and a first transmission assembly, and the first driving motor drives a first wheel of the vehicle to rotate through the first transmission assembly; the second driving system comprises a second driving motor and a second transmission assembly, and the second driving motor drives a second wheel of the vehicle to rotate through the second transmission assembly; wherein the first wheel and the second wheel are in the same drive axle of the vehicle, the output shaft of the first drive motor is parallel to the output shaft of the second drive motor, and in a plane parallel to the axial direction of the output shaft of the first drive motor, there is an overlapping portion of the projection of the housing of the first drive motor and the projection of the housing of the second drive motor. The invention also provides a driving assembly applying the distributed driving system, which has a more compact structure and reduces occupied space.

Description

Distributed driving system and driving assembly of vehicle
Technical Field
The invention relates to the field of vehicle driving systems, in particular to a distributed driving system and a driving assembly of a vehicle.
Background
The distributed driving system is a driving system for respectively driving different wheels through independent different driving motors, the torques output by the driving motors of the driving system are not mutually coupled, the torques output by the driving motors can be independently controlled according to the driving force requirements of the wheels, and the differential steering of the vehicle can be realized by controlling the different rotating speeds of the wheels. The related distributed driving system realizes driving of different wheels through different hub motors, and the distributed driving system is not compact enough in structure and occupies a large space.
Disclosure of Invention
The invention provides a distributed driving system and a driving assembly of a vehicle, which are used for solving the technical problem of reducing the occupied space of the distributed driving system by making the structure of the distributed driving system more compact.
An embodiment of the present invention provides a distributed driving system of a vehicle, including: a first drive system including a first drive motor and a first transmission assembly, the first drive motor driving a first wheel of the vehicle through the first transmission assembly to rotate; a second drive system including a second drive motor and a second transmission assembly, the second drive motor driving a second wheel of the vehicle through the second transmission assembly to rotate; wherein the first wheel and the second wheel are in the same drive axle of the vehicle, the output shaft of the first drive motor is parallel to the output shaft of the second drive motor, and in a plane parallel to the axial direction of the output shaft of the first drive motor, there is an overlapping portion of the projection of the housing of the first drive motor and the projection of the housing of the second drive motor.
Further, in the horizontal direction, the first driving motor and the second driving motor are arranged at intervals, and in a vertical plane, an overlapping part exists between the projection of the shell of the first driving motor and the projection of the shell of the second driving motor, wherein the vertical plane is a plane parallel to the vertical direction and parallel to the output shaft of the first driving motor; in the horizontal direction, the output shaft of the first drive motor extends toward the first wheel, the first transmission assembly is located between the first drive motor and the first wheel, the output shaft of the second drive motor extends toward the second wheel, and the second transmission assembly is located between the second drive motor and the second wheel.
Further, the first transmission assembly comprises a first gear transmission system and a first output shaft, the first gear transmission system is connected with the first driving motor, and the first output shaft is connected with the first gear transmission system and the first wheel; the second transmission assembly comprises a second gear transmission system and a second output shaft, the second gear transmission system is connected with the second driving motor, and the second output shaft is connected with the second gear transmission system and the second wheel; wherein the axis of the first output shaft and the axis of the second output shaft are collinear.
Further, the first gear train is a first planetary train assembly, and the axis of the sun gear of the first planetary train assembly is collinear with the first output shaft; the second gear train is a second planetary gear train assembly having an axis of a sun gear collinear with an axis of the second output shaft.
Further, the first planetary gear train assembly comprises a first planetary gear train and a second planetary gear train, a sun gear of the first planetary gear train is connected with the first driving motor, a planet carrier of the first planetary gear train is connected with the second planetary gear train, and a planet carrier of the second planetary gear train is connected with the first output shaft; the second planetary gear train assembly comprises a third planetary gear train and a fourth planetary gear train, a sun gear of the third planetary gear train is connected with the second driving motor, a planet carrier of the third planetary gear train is connected with the fourth planetary gear train, and a planet carrier of the fourth planetary gear train is connected with the second output shaft.
Further, the planetary gear of the first planetary gear train is fixedly connected with the planetary gear of the second planetary gear train, and the planetary carrier of the first planetary gear train is fixedly connected with the planetary carrier of the second planetary gear train; the planetary gears of the third planetary gear train are fixedly connected with the planetary gears of the fourth planetary gear train, and the planetary carrier of the third planetary gear train is fixedly connected with the planetary carrier of the fourth planetary gear train.
Further, the first transmission assembly further comprises a first intermediate shaft, the first intermediate shaft is connected with the first planetary gear system assembly, a first gear is fixed on the first intermediate shaft, and the first intermediate shaft is connected with the first driving motor through the first gear; the second transmission assembly further comprises a second intermediate shaft, the second intermediate shaft is connected with the second planetary gear train assembly, a second gear is fixed on the second intermediate shaft, and the second intermediate shaft is connected with the first driving motor through the second gear.
Further, in the horizontal direction, the first intermediate shaft is located between the output shaft of the first drive motor and the first output shaft, and the second intermediate shaft is located between the output shaft of the second drive motor and the second output shaft.
Further, the distributed driving system further comprises a connecting shaft, the connecting shaft is connected with the first intermediate shaft and the second intermediate shaft, the connecting shaft is provided with a connecting structure, the connecting structure can be switched between a first state and a second state, torque cannot be transmitted between the first driving system and the second driving system through the connecting shaft when the connecting structure is in the first state, and torque can be transmitted between the first driving system and the second driving system through the connecting shaft when the connecting structure is in the second state.
The embodiment of the invention also provides a driving assembly of the vehicle, which comprises a range extending component for charging a power battery of the vehicle; a hub motor for driving wheels of a front drive axle of the vehicle; and a distributed drive system as described above for driving wheels of a rear drive axle of the vehicle.
The embodiment of the invention provides a distributed driving system of a vehicle, which comprises a first driving system with a first driving motor and a first transmission assembly and a second driving system with a second driving motor and a second transmission assembly, wherein the first driving motor drives a second wheel to rotate through the first transmission assembly, the second driving motor drives the first wheel to rotate through the second transmission assembly, and the first wheel and the second wheel are positioned on the same driving axle; meanwhile, the output shaft of the first driving motor is parallel to the output shaft of the second driving motor, and in a plane parallel to the axial direction of the output shaft of the first driving motor, an overlapping part exists between the projection of the shell of the first driving motor and the projection of the shell of the second driving motor, namely, the shell of the first driving motor and the shell of the second driving motor are arranged at intervals in the direction perpendicular to the axial direction of the output shaft of the first driving motor, and the output shaft of the first driving motor and the shell of the second driving motor are arranged in a staggered mode in the axial direction of the output shaft of the first driving motor, and by enabling the shells of the first driving motor and the shells of the second driving motor to be overlapped in the axial direction, the arrangement of the distributed driving system in the axial direction is more compact, and the size of the distributed driving system in the axial direction is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a distributed driving system of a vehicle according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a relative positional relationship between a first driving motor and a second driving motor in a distributed driving system of a vehicle according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another vehicle distributed drive system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another vehicle distributed drive system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another vehicle distributed drive system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a driving assembly of a vehicle according to an embodiment of the present invention.
Description of the reference numerals
1. A drive assembly; 10. a distributed drive system; 11. a first wheel; 12. a second wheel; 100. a first drive system; 110. a first driving motor; 120. a first transmission assembly; 121. a first gear train; 1211. a first planetary gear train; 1212. a second planetary gear train; 122. a first output shaft; 123. a first intermediate shaft; 124. a first gear; 200. a second drive system; 210. a second driving motor; 220. a second transmission assembly; 221. a second gear train; 2211. a third planetary gear train; 2212. a fourth planetary gear train; 222. a second output shaft; 223. a second intermediate shaft; 224. a second gear; 300. a connecting shaft; 310. and a connection structure.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The individual features described in the specific embodiments can be combined in any suitable manner, without contradiction, for example by combination of different specific features, to form different embodiments and solutions. Various combinations of the specific features of the invention are not described in detail in order to avoid unnecessary repetition.
In the following description, references to the term "first/second/are merely to distinguish between different objects and do not indicate that the objects have the same or a relationship therebetween. It should be understood that references to orientations of "above", "below", "outside" and "inside" are all orientations in normal use, and "left" and "right" directions refer to left and right directions illustrated in the specific corresponding schematic drawings, and may or may not be left and right directions in normal use.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled," unless specifically indicated otherwise, includes both direct and indirect coupling.
In the following detailed description, the distributed drive system may be applied to any type of vehicle, and by way of example, the distributed drive system may be applied to a sedan or a van; the distributed drive system may be applied to a portion of the drive axle of the vehicle, and, illustratively, the distributed drive system may be applied to a front drive axle of the vehicle, and the distributed drive system may also be applied to a rear drive axle of the vehicle. For convenience of explanation, the following will exemplify the configuration of a distributed drive system applied to a rear drive axle of a car.
In some embodiments, as shown in FIG. 1, the distributed drive system 10 includes: a first drive system 100 and a second drive system 200. The first drive system 100 includes a first drive motor 110 and a first transmission assembly 120, the first drive motor 110 driving rotation of the second wheel 12 of the vehicle via the first transmission assembly 120; the second driving system 200 includes a second driving motor 210 and a second transmission assembly 220, and the second driving motor 210 drives the first wheel 11 of the vehicle to rotate through the second transmission assembly 220. The first wheel 11 and the second wheel 12 are located at the same driving axle, which is an exemplary rear axle, the first wheel 11 is located at the left side of the rear axle, and the second wheel 12 is located at the right side of the rear axle, which can be understood that the first driving motor 110 and the second driving motor 210 respectively independently control the left wheel and the right wheel of the rear axle through the first transmission assembly 120 and the second transmission assembly 220, so as to realize the distributed driving of the rear axle.
Wherein, the output shaft of the first driving motor 110 is parallel to the output shaft of the second driving motor 210, and in a plane parallel to the axial direction of the output shaft of the first driving motor 110, there is an overlapping portion of the projection of the housing of the first driving motor 110 and the projection of the housing of the second driving motor 210, that is, the housing of the first driving motor 110 and the housing of the second driving motor 210 are disposed at intervals in a direction perpendicular to the axial direction of the output shaft of the first driving motor 110, and the housing of the first driving motor 110 and the housing of the second driving motor 210 are disposed alternately in the axial direction of the output shaft of the first driving motor 110. Specifically, as shown in fig. 2, the output shaft of the first driving motor 110 extends from the first end face 111 of the housing of the first driving motor 110, the face of the housing of the first driving motor 110 opposite to the first end face 111 is the second end face 112, the output shaft of the second driving motor 210 extends from the third end face 211 of the housing of the second driving motor 210, the face of the second driving motor 210 opposite to the third end face 211 is the fourth end face 212, and the distance between the first end face 111 and the second end face 112 is smaller than the distance between the third end face 211 and the second end face 112 in the axial direction of the output shaft of the first driving motor 110. It can be appreciated that by overlapping the housing of the first drive motor 110 and the housing of the second drive motor 210 in the axial direction, the arrangement of the distributed drive system 10 in the axial direction is made more compact, reducing the size of the distributed drive system 10 in the axial direction.
The embodiment of the invention provides a distributed driving system of a vehicle, which comprises a first driving system with a first driving motor and a first transmission assembly and a second driving system with a second driving motor and a second transmission assembly, wherein the first driving motor drives a second wheel to rotate through the first transmission assembly, the second driving motor drives the first wheel to rotate through the second transmission assembly, and the first wheel and the second wheel are positioned on the same driving axle; meanwhile, the output shaft of the first driving motor is parallel to the output shaft of the second driving motor, and in a plane parallel to the axial direction of the output shaft of the first driving motor, an overlapping part exists between the projection of the shell of the first driving motor and the projection of the shell of the second driving motor, namely, the shell of the first driving motor and the shell of the second driving motor are arranged at intervals in the direction perpendicular to the axial direction of the output shaft of the first driving motor, and the output shaft of the first driving motor and the shell of the second driving motor are arranged in a staggered mode in the axial direction of the output shaft of the first driving motor, and by enabling the shells of the first driving motor and the shells of the second driving motor to be overlapped in the axial direction, the arrangement of the distributed driving system in the axial direction is more compact, and the size of the distributed driving system in the axial direction is reduced.
In some embodiments, as shown in fig. 1, the first driving motor 110 and the second driving motor 210 are disposed at intervals in the horizontal direction, and there is an overlapping portion of the projection of the output shaft of the first driving motor 110 and the output shaft of the second driving motor 110 in a vertical plane, wherein the vertical plane is a plane parallel to the vertical direction and parallel to the output shaft of the first driving motor 110, and by disposing the first driving motor 110 and the second driving motor 210 at intervals in the horizontal direction, the size of the distributed driving system 10 in the vertical direction can be reduced, enabling the distributed driving system 10 to be applied to a skateboard chassis of a vehicle.
Meanwhile, in the horizontal direction, the output shaft of the first driving motor 110 extends toward the first wheel 11, the first transmission assembly 120 is positioned between the output shaft of the first driving motor 110 and the first wheel 11, the output shaft of the second driving motor 210 extends toward the second wheel 12, and the second transmission assembly 220 is positioned between the output shaft of the second driving motor 210 and the second wheel 12, so that the output shaft of the first driving motor 110 and the output shaft of the second driving motor 210 face different directions on the basis of the staggered arrangement of the first driving motor 110 and the second driving motor 210, and are connected with the first wheel 11 and the second wheel 12 through the first transmission assembly 120 and the second transmission assembly 220, thereby enabling the structure of the distributed driving system 10 to be more compact.
In some embodiments, as shown in fig. 1, the first transmission assembly 120 includes a first gear train 121 and a first output shaft 122, the first gear train 121 is connected with the first driving motor 110, and the first output shaft 122 is connected with the first gear train 121 and the first wheel 11, so that the torque of the first driving motor 110 is transmitted to the first wheel 11 through the first gear train 121 after being reduced in speed and increased in torque; the second transmission assembly 220 includes a second gear train 221 and a second output shaft 222, the second gear train 221 is connected with the second driving motor 210, and the second output shaft 222 is connected with the second gear train 221 and the second wheel 12, so that the torque of the second driving motor 210 is transmitted to the second wheel 12 after being reduced and increased in torque through the second gear train 221; wherein, the axis of the first output shaft 122 and the axis of the second output shaft 222 are collinear, it can be understood that, while the first driving motor 110 and the second driving motor 210 are staggered, the first transmission assembly 110 and the second transmission assembly 210 are also staggered, so that the axis of the first output shaft 210 and the axis of the second output shaft 222 can be arranged collinear, further, the structure of the distributed driving system 10 is more compact, and the size of the distributed driving system 10 is further reduced.
In some embodiments, as shown in fig. 3, the first gear train 121 is a first planetary gear train assembly, it being understood that the first gear train 121 includes at least one planetary gear train, such that the radial dimension of the first gear train 121 is reduced by the planetary gear train while enabling a greater gear ratio; the second gear train 221 is a second planetary gear train assembly, it being understood that the second gear train 221 comprises at least one planetary gear train, whereby the radial dimension of the second gear train 221 is reduced by the planetary gear train while a larger gear ratio is enabled.
In some embodiments, as shown in fig. 3, the first gear train 121 includes a first planetary gear train 1211 and a second planetary gear train 1212, the sun gear of the first planetary gear train 1211 is connected to the second planetary gear train 1212, and the carrier of the second planetary gear train 1212 is connected to the first output shaft 122, it being understood that the first planetary gear train 1211 and the second planetary gear train 1212 form a secondary planetary gear train, further reducing the radial dimension of the first gear train 121 while achieving a larger gear ratio; the second gear train 221 includes a third planetary gear train 2211 and a fourth planetary gear train 2212, the sun gear of the third planetary gear train 2211 is connected with the fourth planetary gear train 2212, and the planet carrier of the third planetary gear train 2212 is connected with the second output shaft 222, it being understood that the third planetary gear train 2211 and the fourth planetary gear train 2212 form a secondary planetary gear train, and the radial dimension of the second gear train 221 is further reduced while realizing a larger gear ratio.
The connection between the first planetary gear train 1211 and the second planetary gear train 1212 may be any structure capable of achieving a secondary gear transmission, and the connection between the third planetary gear train 2211 and the fourth planetary gear train 2212 may be any structure capable of achieving a secondary gear transmission.
Alternatively, as shown in fig. 3, the carrier of the first planetary train 1211 is connected to the sun gear of the second planetary train 1212, and the carrier of the second planetary train 1212 is connected to the first wheel 11 via the first output shaft 122; the planet carrier of the third planetary gear train 2211 is connected to the sun gear of the fourth planetary gear train 2212, and the planet carrier of the fourth planetary gear train 2212 is connected to the second wheel 12 via the second output shaft 222.
Alternatively, as shown in fig. 4, the planet gears of the first planetary gear train 1211 are fixedly connected with the planet gears of the second planetary gear train 1212, the planet carrier of the first planetary gear train 1211 is fixedly connected with the planet carrier of the second planetary gear train 1212, and the planet carrier of the second planetary gear train 1212 is connected with the first wheel 11 through the first output shaft 122, it can be understood that the planet gears of the first planetary gear train 1211 are fixedly connected with the planet gears of the second planetary gear train 1212 to form a duplex planetary gear, and meanwhile, the planet carrier of the first planetary gear train 1211 and the planet carrier of the second planetary gear train 1212 are fixedly connected to form an integrated planet carrier, so that a larger transmission ratio can be realized without providing a sun gear of the second planetary gear train 1212.
The planet wheels of the third planetary gear train 2211 are fixedly connected with the planet wheels of the fourth planetary gear train 2212, the planet carrier of the third planetary gear train 2211 is fixedly connected with the planet carrier of the fourth planetary gear train 2212, and the planet carrier of the fourth planetary gear train 2212 is connected with the second wheel 12 through the second output shaft 222, and it can be understood that the planet wheels of the third planetary gear train 2211 are fixedly connected with the planet wheels of the fourth planetary gear train 2212 to form a duplex planetary gear, and meanwhile, the planet carrier of the third planetary gear train 2211 and the planet wheels of the fourth planetary gear train 2212 are fixedly connected to form an integrated planet carrier, so that a larger transmission ratio can be realized without arranging a sun gear of the fourth planetary gear train 2212.
In some embodiments, as shown in fig. 5, the first transmission assembly 120 further includes a first intermediate shaft 123, the first intermediate shaft 123 is connected with the first planetary gear train assembly (the first gear train 121), the first intermediate shaft 123 is fixed with a first gear 124, and the first intermediate shaft 123 is connected with the first driving motor 110 through the first gear 124, and illustratively, an output shaft of the first driving motor 110 is fixed with a gear, and the first gear 124 is meshed with the gear, so that the first intermediate shaft 123 is connected with the first driving motor 110, and it can be understood that a fixed-axis gear is formed by the first intermediate shaft 123 and the first gear 124, so that the capacity of bearing the axle load of the first transmission assembly 120 is increased while the transmission ratio of the first transmission assembly 120 is further increased.
The second transmission assembly 220 further includes a second intermediate shaft 223, the second intermediate shaft 223 is connected with the second planetary gear train assembly (the second gear train 221), the second intermediate shaft 223 is fixed with a second gear 224, and the second intermediate shaft 223 is connected with the second driving motor 210 through the second gear 224, illustratively, an output shaft of the second driving motor 210 is fixed with a gear, the second gear 224 is meshed with the gear to connect the second intermediate shaft 223 with the second driving motor 210, it can be understood that a fixed-axis gear is formed by the second intermediate shaft 223 and the second gear 224, and the capacity of bearing the axle load of the second transmission assembly 220 is increased while the transmission ratio of the second transmission assembly 220 is further increased.
In some embodiments, as shown in fig. 5, the first intermediate shaft 123 is located between the output shaft of the first driving motor 110 and the first output shaft 122 in the horizontal direction, and it is understood that the transmission of the torque in the horizontal direction is achieved by the first intermediate shaft 123, which reduces the span of the output shaft of the first driving motor 110 and the first planetary gear train assembly (the first gear train 121) in the horizontal direction; the second intermediate shaft 223 is located between the output shaft of the second driving motor 210 and the second output shaft 222, and it is understood that the transmission of the torque in the horizontal direction is achieved by the second intermediate shaft 223, reducing the span of the output shaft of the second driving motor 210 and the horizontal direction of the second planetary gear train assembly (the second gear train 221).
In some embodiments, as shown in fig. 5, the distributed drive system 10 further includes an intermediate shaft 300, the connecting shaft 300 connecting the first intermediate shaft 123 and the second intermediate shaft 223, while the intermediate shaft 300 has a connecting structure 310, the connecting structure 310 being capable of switching between a first state and a second state, the first drive system 100 and the second drive system 200 being unable to transmit torque through the connecting shaft 300 when the connecting structure is in the first state; when the connection structure 310 is in the second state, the first driving system 100 and the second driving system 200 can mutually transmit torque through the connection shaft 300, it can be understood that by connecting the connection shaft 300 with the first transmission system 100 and the second transmission system 200, the connection structure 310 is in the first state during normal running of the vehicle, and the first driving system 100 and the second driving system 200 cannot mutually transmit torque through the connection shaft 300, that is, the torques of the first driving system 100 and the second driving system 200 are in the decoupling state, so that the distributed driving of the vehicle is realized; when one of the first wheel and the second wheel of the vehicle is in a slip state and the vehicle cannot run, the state of the connecting structure 310 is switched to a second state, and at this time, the first driving system 100 and the second driving system 200 can mutually transmit torque through the connecting shaft 300, that is, the torque of the first driving system 100 and the torque of the second driving system 200 are coupled, so that the torque output by the first driving motor 110 and the second driving motor 210 can be transmitted to the first wheel 11 and the second wheel 12 after being coupled, thereby improving the escaping capability of the vehicle; in a state where one of the first and second driving motors 110 and 210 of the vehicle fails to operate, the state of the connection structure 310 is switched to the second state, at which time the driving motor capable of running is able to transmit torque to the failed driving system through the connection shaft 300, thereby simultaneously driving the first and second wheels 11 and 12 to rotate, and at the same time, the vehicle alarm informs the driver of the failure of the driving motor and limits the vehicle speed, i.e., achieves limp-home of the vehicle. Wherein the connection shaft 300 may be connected with different portions of the first and second driving systems 100 and 200 to enable the first and second driving systems 100 and 200 to transmit torque to each other.
It should be noted that, the connection structure 310 may be any structure capable of implementing power rotation and interruption between the first driving system 100 and the second driving system 200, and the connection structure 310 is illustratively a clutch, where in a disengaged state of the clutch, the connection structure 310 is in a first state, torque cannot be transmitted between the first driving system 100 and the second driving system 200 through the connection shaft 300, and in a coupled state of the clutch, the connection structure 310 is in a second state, and torque can be transmitted between the first driving system 100 and the second driving system 200 through the connection shaft 300; the connection structure 310 is an engagement sleeve, in which the engagement sleeve is in a separated state, the engagement sleeve is idle, the connection structure 310 is in a first state, torque cannot be transmitted between the first driving system 100 and the second driving system 200 through the connection shaft 300, in which the engagement sleeve is in an engaged state, the engagement sleeve can drive the connection shaft 300 to rotate, the connection structure 310 is in a second state, and torque can be transmitted between the first driving system 100 and the second driving system 200 through the connection shaft 300.
The embodiment of the invention also provides a driving assembly of the vehicle, which is applied to the range-extended hybrid vehicle, and one of the driving axles of the vehicle is a distributed driving system.
In some embodiments, as shown in fig. 6, the drive assembly 1 includes: a range extender assembly 20, an in-wheel motor 21 and a distributed drive system 10. The range extending assembly 20 is an assembly capable of driving a generator to generate electricity through operation of an engine, and is used for charging a power battery of a vehicle, the hub motor 21 is used for acquiring electric energy from the power battery and driving wheels of a front driving axle of the vehicle, the distributed driving system 10 is of a structure shown in any one of fig. 1 to 5 and is used for driving wheels of a rear driving axle of the vehicle, and it can be understood that the vehicle bridge is driven by the hub motor 21 to provide a setting space for the range extending assembly 20 arranged in a front cabin of the vehicle, and meanwhile, the range extending assembly 20 is also used for providing electric energy for the vehicle and prolonging the endurance mileage of the vehicle.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. A distributed drive system for a vehicle, the distributed drive system comprising:
a first drive system including a first drive motor and a first transmission assembly, the first drive motor driving a first wheel of the vehicle through the first transmission assembly to rotate;
a second drive system including a second drive motor and a second transmission assembly, the second drive motor driving a second wheel of the vehicle through the second transmission assembly to rotate;
wherein the first wheel and the second wheel are in the same drive axle of the vehicle, the output shaft of the first drive motor is parallel to the output shaft of the second drive motor, and in a plane parallel to the axial direction of the output shaft of the first drive motor, there is an overlapping portion of the projection of the housing of the first drive motor and the projection of the housing of the second drive motor.
2. The distributed drive system of claim 1, wherein the first drive motor and the second drive motor are disposed at intervals in a horizontal direction, and there is an overlapping portion of a projection of a housing of the first drive motor and a projection of a housing of the second drive motor in a vertical plane, wherein the vertical plane is a plane parallel to the vertical direction and parallel to an output shaft of the first drive motor;
in the horizontal direction, the output shaft of the first drive motor extends toward the first wheel, the first transmission assembly is located between the first drive motor and the first wheel, the output shaft of the second drive motor extends toward the second wheel, and the second transmission assembly is located between the second drive motor and the second wheel.
3. The distributed drive system of claim 1 or 2, wherein the first transmission assembly comprises a first gear train and a first output shaft, the first gear train being connected to the first drive motor, the first output shaft connecting the first gear train and the first wheel;
the second transmission assembly comprises a second gear transmission system and a second output shaft, the second gear transmission system is connected with the second driving motor, and the second output shaft is connected with the second gear transmission system and the second wheel;
wherein the axis of the first output shaft and the axis of the second output shaft are collinear.
4. A distributed drive system as claimed in claim 3 wherein the first gear train is a first planetary train assembly having the sun axis collinear with the first output shaft;
the second gear train is a second planetary gear train assembly having an axis of a sun gear collinear with an axis of the second output shaft.
5. The distributed drive system of claim 4 wherein the first planetary train assembly comprises a first planetary train having a sun gear connected to the first drive motor and a second planetary train having a carrier connected to the second planetary train and a carrier connected to the first output shaft;
the second planetary gear train assembly comprises a third planetary gear train and a fourth planetary gear train, a sun gear of the third planetary gear train is connected with the second driving motor, a planet carrier of the third planetary gear train is connected with the fourth planetary gear train, and a planet carrier of the fourth planetary gear train is connected with the second output shaft.
6. The distributed drive system of claim 5, wherein the planet gears of the first planetary gear train are fixedly connected with the planet gears of the second planetary gear train, and the planet carrier of the first planetary gear train is fixedly connected with the planet carrier of the second planetary gear train;
the planetary gears of the third planetary gear train are fixedly connected with the planetary gears of the fourth planetary gear train, and the planetary carrier of the third planetary gear train is fixedly connected with the planetary carrier of the fourth planetary gear train.
7. The distributed drive system of claim 4, wherein the first transmission assembly further comprises a first intermediate shaft connected to the first planetary train assembly, the first intermediate shaft having a first gear fixed thereto, and the first intermediate shaft being connected to the first drive motor via the first gear;
the second transmission assembly further comprises a second intermediate shaft, the second intermediate shaft is connected with the second planetary gear train assembly, a second gear is fixed on the second intermediate shaft, and the second intermediate shaft is connected with the first driving motor through the second gear.
8. The distributed drive system of claim 7, wherein in a horizontal direction, the first intermediate shaft is located between the output shaft of the first drive motor and the first output shaft, and the second intermediate shaft is located between the output shaft of the second drive motor and the second output shaft.
9. The distributed drive system of claim 7, further comprising a connecting shaft connecting the first intermediate shaft and the second intermediate shaft, the connecting shaft having a connecting structure that is switchable between a first state in which torque cannot be transferred between the first drive system and the second drive system via the connecting shaft and a second state in which torque can be transferred between the first drive system and the second drive system via the connecting shaft.
10. A drive assembly for a vehicle, the drive assembly comprising:
the range extension assembly is used for charging the vehicle power battery;
the hub motor is used for driving wheels of the front drive axle of the vehicle;
a distributed drive system according to any one of claims 1 to 9 for driving wheels of a rear drive axle of the vehicle.
CN202311301373.8A 2023-10-08 2023-10-08 Distributed driving system and driving assembly of vehicle Pending CN117284068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311301373.8A CN117284068A (en) 2023-10-08 2023-10-08 Distributed driving system and driving assembly of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311301373.8A CN117284068A (en) 2023-10-08 2023-10-08 Distributed driving system and driving assembly of vehicle

Publications (1)

Publication Number Publication Date
CN117284068A true CN117284068A (en) 2023-12-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311301373.8A Pending CN117284068A (en) 2023-10-08 2023-10-08 Distributed driving system and driving assembly of vehicle

Country Status (1)

Country Link
CN (1) CN117284068A (en)

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