CN112389187A - Hybrid power axle assembly and automobile - Google Patents

Hybrid power axle assembly and automobile Download PDF

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Publication number
CN112389187A
CN112389187A CN202011455581.XA CN202011455581A CN112389187A CN 112389187 A CN112389187 A CN 112389187A CN 202011455581 A CN202011455581 A CN 202011455581A CN 112389187 A CN112389187 A CN 112389187A
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CN
China
Prior art keywords
gear
transmission
shaft
planetary reducer
differential gear
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
CN202011455581.XA
Other languages
Chinese (zh)
Inventor
胡胜利
郭宁
王歆胤
杨博
吴瑞丽
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 Dana Axle Co Ltd
Original Assignee
Dongfeng Dana Axle Co Ltd
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 Dana Axle Co Ltd filed Critical Dongfeng Dana Axle Co Ltd
Priority to CN202011455581.XA priority Critical patent/CN112389187A/en
Publication of CN112389187A publication Critical patent/CN112389187A/en
Pending legal-status Critical Current

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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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B60B35/121—Power-transmission from drive shaft to hub
    • B60B35/122—Power-transmission from drive shaft to hub using gearings
    • B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Arrangement Of Transmissions (AREA)

Abstract

The embodiment of the invention provides a hybrid power axle assembly and an automobile, and relates to the field of axles. The hybrid power axle assembly comprises an engine, a speed reduction transmission component, a first hub motor, a first planetary reducer, a first differential gear chain, a second hub motor, a second planetary reducer, a second differential gear chain and a differential gear shaft; the engine is in transmission with the speed reduction transmission assembly, and the speed reduction transmission assembly is in transmission with the first planetary reducer and the second planetary reducer respectively; the first hub motor, the first planetary reducer, the first differential gear chain and the differential gear shaft are sequentially driven; the second hub motor, the second planetary reducer, the second differential gear chain and the differential gear shaft are sequentially driven. The embodiment of the invention integrates a hybrid driving scheme of a double-hub motor and traditional energy drive, and has the characteristics of compact structure and flexible whole vehicle arrangement; meanwhile, the distributed driving motors adopt mechanical differentials and have the characteristics of reliable structure and low cost.

Description

Hybrid power axle assembly and automobile
Technical Field
The invention relates to the field of axles, in particular to a hybrid power axle assembly and an automobile.
Background
The existing hybrid power drive usually adopts the form of different energy types of a front coupling or a front axle assembly and a rear axle assembly of a gearbox to realize the hybrid power output of an automobile. For a hybrid power configuration adopting different types of energy output of a front axle and a rear axle, two sets of transmission devices are needed, particularly the front axle has steering and driving functions; the structure is complicated, the whole weight is heavy, and the cost is high.
Disclosure of Invention
The invention aims to provide a hybrid power axle assembly and an automobile, which integrate a hybrid driving scheme of a double-hub motor and traditional energy drive and have the characteristics of compact structure and flexible whole automobile arrangement; meanwhile, the distributed driving motors adopt mechanical differentials and have the characteristics of reliable structure and low cost.
The embodiment of the invention is realized by the following steps:
in a first aspect, the present invention provides a hybrid axle assembly, including an engine, a reduction transmission assembly, a first in-wheel motor, a first planetary reducer, a first differential gear chain, a second in-wheel motor, a second planetary reducer, a second differential gear chain, and a differential gear shaft, wherein the engine is located between the first in-wheel motor and the second in-wheel motor;
the engine is in transmission connection with the speed reduction transmission assembly, the speed reduction transmission assembly is in transmission connection with the first planetary reducer and the second planetary reducer respectively, the first planetary reducer is in transmission connection with a first wheel edge, the second planetary reducer is in transmission connection with a second wheel edge, and the first wheel edge is opposite to the second wheel edge;
the first hub motor is in transmission connection with the first planetary reducer, and the first differential gear chain is in transmission connection with the first planetary reducer and one end of the differential gear shaft;
the second hub motor is in transmission connection with the second planetary reducer, and the second differential gear chain is in transmission connection with the second planetary reducer and is in transmission connection with the other end of the differential gear shaft.
In an optional embodiment, the reduction drive assembly includes a transmission case, a transmission gear set, a first half shaft and a second half shaft, the engine is in transmission connection with the transmission case, the transmission gear set is in transmission connection with the transmission case, the first half shaft and the second half shaft are in transmission connection with the transmission gear set respectively, the first half shaft is in transmission connection with the first planetary reducer, and the second half shaft is in transmission connection with the second planetary reducer.
In an optional embodiment, the reduction transmission assembly further comprises a first half shaft gear, the first half shaft gear is in meshing transmission with the transmission gear set, and the first half shaft is fixedly connected with the first half shaft gear; and/or the reduction transmission assembly further comprises a second side gear, the second side gear is in meshing transmission with the transmission gear set, and the second half shaft is fixedly connected with the second side gear.
In an optional embodiment, the first planetary reducer includes a first sun gear, a first planet gear, a first ring gear, and a first carrier, the first sun gear is in transmission connection with the first in-wheel motor, the number of the first planet gears includes a plurality of, and all in meshing transmission with the first sun gear and the inner ring of the first ring gear, the first carrier is in transmission connection with a plurality of the first carrier, the first carrier is in transmission connection with the first half shaft and is used for being in transmission connection with the first rim of the wheel, and the outer ring of the first ring gear is in meshing transmission with the first differential gear chain.
In an alternative embodiment, the first planet carrier is in transmission connection with the first hub side through a first external half shaft, and the first external half shaft penetrates through the first in-wheel motor and is arranged coaxially with the first half shaft.
In an optional embodiment, the second planetary reducer includes a second sun gear, a second planet gear, a second ring gear and a second planet carrier, the second sun gear is in transmission connection with the second in-wheel motor, the number of the second planet gears includes a plurality of second planet gears, and the second planet carriers are in meshing transmission with the second sun gear and the inner ring of the second ring gear, the second planet carrier is in transmission connection with a plurality of second planet carriers, the second planet carrier is in transmission connection with the second half shaft and is used for being in transmission connection with the second wheel side, and the outer ring of the second ring gear is in meshing transmission with the second differential gear chain.
In an alternative embodiment, the second planet carrier is in transmission connection with the second wheel rim through a second external half shaft, and the second external half shaft passes through the second hub motor and is arranged coaxially with the second half shaft.
In an alternative embodiment, the first axle shaft and the second axle shaft are coaxially arranged and are both coaxially arranged with the first wheel rim and the second wheel rim.
In an alternative embodiment, the first differential gear train has a transmission order that is equal to or even different from the transmission order of the second differential gear train.
In a second aspect, the present invention provides an automobile comprising a hybrid axle assembly as described in any one of the preceding embodiments.
The embodiment of the invention provides a hybrid power axle assembly and an automobile: the hybrid power axle assembly can be driven by the engine or the first in-wheel motor and the second in-wheel motor independently or in a hybrid mode, and when the engine is driven, the power transmission path is as follows: engine, speed reduction transmission subassembly. The speed is transmitted to the wheel edges on two sides from the speed reduction transmission assembly, wherein the path transmitted to the first wheel edge is as follows: the speed reduction transmission assembly, the first planetary speed reducer and the first wheel edge; the path of the transfer to the second wheel edge is as follows: the speed reduction transmission assembly, the second planetary reducer and the second wheel edge. When the first in-wheel motor and the second in-wheel motor are driven, the power transmission path from the first in-wheel motor to the first wheel edge is as follows: the device comprises a first hub motor, a first planetary reducer and a first wheel edge; the power transmission path from the second hub motor to the second wheel edge is as follows: the second hub motor, the second planetary reducer and the second wheel edge. Meanwhile, the first in-wheel motor can also transmit along the following transmission path: the first hub motor, the first planetary reducer, the first differential gear chain and the differential gear shaft; the second in-wheel motor can also transmit along the following transmission path: the second hub motor, the second planetary reducer, the second differential gear chain and the differential gear shaft are used for realizing mechanical differential. In the embodiment of the invention, the double-hub motor is distributed and driven to integrate the traditional energy drive, so that the structure of the axle is compact, and the arrangement of the whole vehicle is flexible. Meanwhile, the distributed driving motors adopt a mechanical differential principle and have the characteristics of reliable structure and low cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic illustration of a transmission relationship of a hybrid axle assembly according to an embodiment of the present invention;
fig. 2 is a schematic view of a transmission relationship among a first in-wheel motor, a first planetary reducer, a first differential gear train, and the like according to an embodiment of the present invention;
fig. 3 is a schematic view of a transmission relationship among a second in-wheel motor, a second planetary reducer, a second differential gear train, and the like according to an embodiment of the present invention.
Icon: 100-hybrid axle assembly; 110-an engine; 120-a reduction drive assembly; 121-speed box; 122 — a drive gear set; 123-a first half-shaft; 124-a second half shaft; 125-first half shaft gear; 126-a second side gear; 130-a first in-wheel motor; 140-a first planetary reducer; 141-a first sun gear; 142-a first planet; 143-a first ring gear; 144-a first planet carrier; 150-a first differential gear train; 160-a second in-wheel motor; 170-a second planetary reducer; 171-a second sun gear; 172-second planet; 173-a second ring gear; 174-a second planet carrier; 180-a second differential gear train; 190-differential gear shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a hybrid axle assembly 100 is provided according to an embodiment of the present invention. The hybrid power axle assembly 100 integrates a hybrid driving scheme of a double-hub motor and traditional energy driving, and has the characteristics of compact structure and flexible whole vehicle arrangement; meanwhile, the distributed driving motors adopt mechanical differentials and have the characteristics of reliable structure and low cost.
In the embodiment of the present invention, the hybrid axle assembly 100 includes an engine 110, a reduction gear assembly 120, a first in-wheel motor 130, a first planetary reducer 140, a first differential gear train 150, a second in-wheel motor 160, a second planetary reducer 170, a second differential gear train 180, and a differential gear shaft 190. The motor 110 may be disposed between the first in-wheel motor 130 and the second in-wheel motor 160, and the first in-wheel motor 130 and the second in-wheel motor 160 may be disposed on both side wheel hubs.
The engine 110 is in transmission connection with the reduction transmission assembly 120, the reduction transmission assembly 120 is in transmission connection with the first planetary reducer 140 and the second planetary reducer 170 respectively, the first planetary reducer 140 is in transmission connection with a first wheel edge, the second planetary reducer 170 is in transmission connection with a second wheel edge, and the first wheel edge is opposite to the second wheel edge.
The first hub motor 130 is in transmission connection with the first planetary reducer 140, and the first differential gear chain 150 is in transmission connection with the first planetary reducer 140 and is in transmission connection with one end of the differential gear shaft 190; the second in-wheel motor 160 is in driving connection with the second planetary reducer 170, and the second differential gear chain 180 is in driving connection with the second planetary reducer 170 and in driving connection with the other end of the differential gear shaft 190.
In the embodiment of the present invention, when the engine 110 is driven, the power transmission path is: engine 110, reduction drive assembly 120. The speed reduction transmission assembly 120 transmits the speed reduction transmission assembly to the two wheel sides, wherein the path of the speed reduction transmission assembly to the first wheel side is as follows: a reduction drive assembly 120, a first planetary reducer 140, a first wheel rim; the path of the transfer to the second wheel edge is as follows: a reduction transmission assembly 120, a second planetary reducer 170 and a second wheel edge.
When the first in-wheel motor 130 and the second in-wheel motor 160 are driven, the power transmission path from the first in-wheel motor 130 to the first wheel edge is: a first hub motor 130, a first planetary reducer 140, a first wheel rim; the power transmission path from the second in-wheel motor 160 to the second wheel edge is: a second in-wheel motor 160, a second planetary reducer 170 and a second wheel edge.
It should be noted that the engine 110 and the motor may be driven individually or in combination. Embodiments of the present invention do not require any particular type of drive.
Meanwhile, the power is transmitted to the transmission path of the differential gear shaft 190. The transmission path of the first in-wheel motor 130 is: a first in-wheel motor 130, a first planetary reducer 140, a first differential gear train 150, and a differential gear shaft 190; the transmission path of the second in-wheel motor 160 is: a second in-wheel motor 160, a second planetary reducer 170, a second differential gear chain 180, and a differential gear shaft 190.
In other words, in the embodiment of the invention, the double-hub motor is distributed and driven to integrate the traditional energy drive, so that the structure of the axle is compact, and the arrangement of the whole vehicle is flexible. Meanwhile, the distributed driving motors adopt a mechanical differential principle and have the characteristics of reliable structure and low cost.
In an alternative embodiment, the reduction drive assembly 120 may include a gearbox 121, a transmission gear set 122, a first half shaft 123 and a second half shaft 124, the engine 110 is in transmission connection with the gearbox 121, the transmission gear set 122 is in transmission connection with the gearbox 121, the first half shaft 123 and the second half shaft 124 are respectively in transmission connection with the transmission gear set 122, the first half shaft 123 is in transmission connection with the first planetary reducer 140, and the second half shaft 124 is in transmission connection with the second planetary reducer 170.
During transmission, the engine 110 is transmitted to the gearbox 121, and is transmitted to the transmission gear set 122 through a speed changing shaft of the gearbox 121; the drive gear set 122 may include a drive gear and a driven gear, wherein the driven gear is in drive with the transmission 121, then is transmitted to the drive gear, and then is transmitted by the drive gear to the first half shaft 123 and the second half shaft 124, respectively. The first and second half shafts 123 and 124 are driven by the first and second planetary gear reducers 140 and 170, respectively, to transmit power to the first and second wheel sides.
Optionally, the reduction transmission assembly 120 may further include a first half-shaft gear 125, the first half-shaft gear 125 is in meshing transmission with the transmission gear set 122, and the first half-shaft 123 is fixedly connected with the first half-shaft gear 125; and/or, the underdrive assembly 120 further comprises a second side gear 126, the second side gear 126 is in meshing transmission with the transmission gear set 122, and the second half shaft 124 is fixedly connected with the second side gear 126.
It should be understood that the manner of connecting the first axle gear 125 to the first axle shaft 123 includes, but is not limited to, a splined connection, welding, integral molding, etc.; likewise, the manner of connecting the second side gear 126 and the second axle shaft 124 is not limited to spline connection, welding, integral molding, or the like. The connection mode between the first side gear 125 and the first axle 123 and the connection mode between the second side gear 126 and the second axle 124 are not particularly limited in the embodiments of the present invention.
Referring to fig. 2, in an alternative embodiment, the first planetary reducer 140 may include a first sun gear 141, a first planet gear 142, a first ring gear 143, and a first carrier 144, where the first sun gear 141 is in transmission connection with the first in-wheel motor 130, the first planet gear 142 includes a plurality of first planet gears 142, and is in meshing transmission with inner rings of the first sun gear 141 and the first ring gear 143, the first carrier 144 is in transmission connection with the plurality of first planet carriers 144, the first planet carrier 144 is in transmission connection with the first half shaft 123 and is used for being in transmission connection with a first hub, and an outer ring of the first ring gear 143 is in meshing transmission with the first differential gear chain 150.
In the embodiment of the present invention, the first ring gear 143 is disposed floating, that is, the first ring gear 143 is not fixed to an axle housing or the like, except for meshing transmission with the first planetary gear 142 and the first differential gear train 150. That is, the first ring gear 143 can be rotated under some operating conditions (such as when the vehicle is turning).
Alternatively, the first planet carrier 144 is drivingly connected to the first wheel rim by a first outer axle shaft, which passes through the first in-wheel motor 130 and is coaxially disposed with the first axle shaft 123.
Referring to fig. 3, in an alternative embodiment, the second planetary gear set 170 may include a second sun gear 171, a second planetary gear 172, a second ring gear 173, and a second planet carrier 174, where the second sun gear 171 is in transmission connection with the second in-wheel motor 160, the number of the second planetary gear 172 includes a plurality of second planet carriers, and each of the second planet carriers is in meshing transmission with inner rings of the second sun gear 171 and the second ring gear 173, the second planet carrier 174 is in transmission connection with the plurality of second planet carriers 174, the second planet carrier 174 is in transmission connection with the second half shaft 124 and is used for being in transmission connection with the second ring gear, and an outer ring of the second ring gear 173 is in meshing transmission connection with the second differential gear train 180.
In the present exemplary embodiment, the second ring gear 173 is arranged floating, i.e., it is not fixed to the axle housing or the like, except for the meshing engagement with the second planetary gears 172 and the second differential gear train 180. That is, the second ring gear 173 may be rotated under certain operating conditions (e.g., when the vehicle is turning).
In the embodiment of the present invention, the first gear ring 143 and the second gear ring 173 are both provided with a floating structure, when the vehicle turns, the rotation trends of the first gear ring 143 and the second gear ring 173 are different due to the inconsistent wheel speeds at the two sides, and the gear ring at the end with the slow rotation speed and the gear ring at the end with the fast rotation speed rotate in opposite directions, so that the rotation directions of the two ends of the differential gear shaft 190 are the same through the first differential gear chain 150 and the second differential gear chain 180, and the differential gear shaft 190 is driven to rotate, thereby achieving the purpose of differential speed.
Alternatively, the second planet carrier 174 is drivingly connected to the second wheel rim via a second outer axle shaft, which passes through the second in-wheel motor 160 and is disposed coaxially with the second axle shaft 124.
Optionally, the first axle shaft 123 and the second axle shaft 124 are coaxially disposed and are both coaxially disposed with the first wheel rim and the second wheel rim.
In an alternative embodiment, the transmission order of the first differential gear train 150 is equal to or different from the transmission order of the second differential gear train 180 by an even number, so that the rotation directions of the first in-wheel motor 130 and the second in-wheel motor 160 transmitted to the two ends of the differential gear shaft 190 are the same, and the mechanical differential is realized.
Alternatively, the gears in the first and second differential gear trains 150 and 180 may both be spur gear trains. Of course, the present invention is not limited to this, and other types of gears may be used.
Alternatively, the differential gear shaft 190 may be an integral shaft or a transmission shaft.
In the present embodiment, the differential gear shaft 190 is located below the engine 110 and the reduction drive assembly 120, i.e., both the first differential gear train 150 and the second differential gear train 180 are arranged downward; it may be convenient to arrange the gearbox 121, the transmission gear set 122 and the first 123 and second 124 half-shafts in a differential transmission assembly.
The invention provides an automobile comprising a hybrid axle assembly 100 according to any one of the preceding embodiments. The automobile includes, but is not limited to, a new energy automobile (such as an electric automobile and the like), a fuel automobile and the like.
Referring to fig. 1 to fig. 3, a hybrid axle assembly 100 according to an embodiment of the present invention and an automobile: the hybrid axle assembly 100 can be driven by the engine 110 or the first in-wheel motor 130 and the second in-wheel motor 160 individually or in combination, and when the engine 110 is driven, the power transmission paths are: engine 110, reduction drive assembly 120. The speed reduction transmission assembly 120 transmits the speed reduction transmission assembly to the two wheel sides, wherein the path of the speed reduction transmission assembly to the first wheel side is as follows: a reduction drive assembly 120, a first planetary reducer 140, a first wheel rim; the path of the transfer to the second wheel edge is as follows: a reduction transmission assembly 120, a second planetary reducer 170 and a second wheel edge. When the first in-wheel motor 130 and the second in-wheel motor 160 are driven, the power transmission path from the first in-wheel motor 130 to the first wheel edge is: a first hub motor 130, a first planetary reducer 140, a first wheel rim; the power transmission path from the second in-wheel motor 160 to the second wheel edge is: a second in-wheel motor 160, a second planetary reducer 170 and a second wheel edge. The first in-wheel motor 130 and the second in-wheel motor 160 can also realize mechanical differential, wherein the transmission path of the first in-wheel motor 130 is: a first in-wheel motor 130, a first planetary reducer 140, a first differential gear train 150, and a differential gear shaft 190; the transmission path of the second in-wheel motor 160 is: a second in-wheel motor 160, a second planetary reducer 170, a second differential gear chain 180, and a differential gear shaft 190. In the embodiment of the invention, the double-hub motor is distributed and driven to integrate the traditional energy drive, so that the structure of the axle is compact, and the arrangement of the whole vehicle is flexible. Meanwhile, the distributed driving motors adopt a mechanical differential principle and have the characteristics of reliable structure and low cost.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A hybrid axle assembly is characterized by comprising an engine (110), a speed reduction transmission component (120), a first in-wheel motor (130), a first planetary reducer (140), a first differential gear chain (150), a second in-wheel motor (160), a second planetary reducer (170), a second differential gear chain (180) and a differential gear shaft (190);
the engine (110) is in transmission connection with the reduction transmission assembly (120), the reduction transmission assembly (120) is in transmission connection with the first planetary reducer (140) and the second planetary reducer (170) respectively, the first planetary reducer (140) is in transmission connection with a first wheel edge, the second planetary reducer (170) is in transmission connection with a second wheel edge, and the first wheel edge is opposite to the second wheel edge;
the first hub motor (130) is in transmission connection with the first planetary reducer (140), and the first differential gear chain (150) is in transmission connection with the first planetary reducer (140) and is in transmission connection with one end of the differential gear shaft (190);
the second hub motor (160) is in transmission connection with the second planetary reducer (170), and the second differential gear chain (180) is in transmission connection with the second planetary reducer (170) and is in transmission connection with the other end of the differential gear shaft (190).
2. The hybrid axle assembly according to claim 1, wherein the reduction gear assembly (120) comprises a gearbox (121), a transmission gear set (122), a first half-shaft (123) and a second half-shaft (124), the engine (110) is in transmission connection with the gearbox (121), the transmission gear set (122) is in transmission connection with the gearbox (121), the first half-shaft (123) and the second half-shaft (124) are in transmission connection with the transmission gear set (122), respectively, the first half-shaft (123) is in transmission connection with the first planetary reducer (140), and the second half-shaft (124) is in transmission connection with the second planetary reducer (170).
3. The hybrid axle assembly of claim 2, wherein the reduction drive assembly (120) further comprises a first axle gear (125), the first axle gear (125) being in meshing drive with the drive gear set (122), the first axle shaft (123) being fixedly connected to the first axle gear (125); and/or the presence of a gas in the gas,
the reduction transmission assembly (120) further comprises a second side gear (126), the second side gear (126) is in meshing transmission with the transmission gear set (122), and the second half shaft (124) is fixedly connected with the second side gear (126).
4. The hybrid axle assembly according to claim 2, wherein the first planetary reduction gear (140) comprises a first sun gear (141), a first planet gear (142), a first ring gear (143) and a first carrier (144), the first sun gear (141) being in driving connection with the first in-wheel motor (130), the first planet gear (142) comprising a plurality and being in meshing driving connection with the first sun gear (141) and an inner ring of the first ring gear (143), the first carrier (144) being in driving connection with the plurality of first carriers (144), the first carrier (144) being in driving connection with the first axle shaft (123) and being adapted to be in driving connection with the first wheel rim, an outer ring of the first ring gear (143) being in meshing driving connection with the first differential gear train (150).
5. The hybrid axle assembly according to claim 4, wherein the first carrier (144) is drivingly connected to the first wheel rim by a first outboard half shaft, which passes through the first in-wheel motor (130) and is coaxially disposed with the first half shaft (123).
6. A hybrid axle assembly according to claim 2, wherein the second planetary reduction gear (170) comprises a second sun gear (171), second planet gears (172), a second ring gear (173) and a second planet carrier (174), the second sun gear (171) being in driving connection with the second in-wheel motor (160), the second planet gears (172) being in number and being in meshing driving connection with the second sun gear (171) and an inner ring of the second ring gear (173), the second planet carrier (174) being in driving connection with the second planet carriers (174), the second planet carrier (174) being in driving connection with the second half shaft (124) and being adapted to being in driving connection with the second wheel rim, an outer ring of the second ring gear (173) being in meshing driving connection with the second differential gear train (180).
7. The hybrid axle assembly of claim 6, wherein the second planet carrier (174) is drivingly connected to the second wheel rim by a second stub shaft, the second stub shaft passing through the second in-wheel motor (160) and being coaxially disposed with the second stub shaft (124).
8. Hybrid axle assembly according to any one of claims 2 to 7, characterised in that the first half-shaft (123) and the second half-shaft (124) are arranged coaxially and are both arranged coaxially with the first wheel rim and the second wheel rim.
9. Hybrid axle assembly according to any one of claims 1 to 7, characterised in that the transmission order of the first differential gear train (150) is equal to or differs by an even number from the transmission order of the second differential gear train (180).
10. An automobile, characterized in that it comprises a hybrid power axle assembly (100) according to any one of claims 1 to 9.
CN202011455581.XA 2020-12-10 2020-12-10 Hybrid power axle assembly and automobile Pending CN112389187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011455581.XA CN112389187A (en) 2020-12-10 2020-12-10 Hybrid power axle assembly and automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011455581.XA CN112389187A (en) 2020-12-10 2020-12-10 Hybrid power axle assembly and automobile

Publications (1)

Publication Number Publication Date
CN112389187A true CN112389187A (en) 2021-02-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011455581.XA Pending CN112389187A (en) 2020-12-10 2020-12-10 Hybrid power axle assembly and automobile

Country Status (1)

Country Link
CN (1) CN112389187A (en)

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