CN106965662A - A kind of bi-motor coupling driving bridge with torque fixed direction allocation function - Google Patents
A kind of bi-motor coupling driving bridge with torque fixed direction allocation function Download PDFInfo
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- CN106965662A CN106965662A CN201710267270.2A CN201710267270A CN106965662A CN 106965662 A CN106965662 A CN 106965662A CN 201710267270 A CN201710267270 A CN 201710267270A CN 106965662 A CN106965662 A CN 106965662A
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- Prior art keywords
- sun gear
- semiaxis
- gear
- gear ring
- planet carrier
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- 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
-
- 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
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
Abstract
The invention discloses a kind of bi-motor coupling driving bridge with torque fixed direction allocation function, including：Main driving mechanism；Bevel differential；TV controls drive mechanism；First single epicyclic train, its first sun gear is rotatably supported on the first semiaxis, and the first gear ring controls the output end of drive mechanism to be connected with TV；Second single epicyclic train, its second gear ring is fixed on Driving axle housing, and the second sun gear is fixedly and coaxially connected with the first sun gear；3rd single epicyclic train, its 3rd sun gear is fixedly connected with the second planet carrier, and the 3rd gear ring is fixedly connected with differential carrier；First clutch, for making the first semiaxis and the first planet carrier separate or engage；3rd clutch, for making the first semiaxis and the third line carrier separate or engage；Second clutch, for making the first planet carrier and Driving axle housing separate or engage；4th clutch, for making the third line carrier and Driving axle housing separate or engage.
Description
Technical field
The invention belongs to electric automobile actuation techniques field, more particularly to a kind of double electricity with torque fixed direction allocation function
Machine coupling driving bridge.
Background technology
Due to environmental pollution, increasingly serious the problems such as energy crisis, the automobile of development energy-conserving and environment-protective is got in the world
Paid attention to come more countries.Wherein electric automobile, as a kind of automobile of almost zero-emission, becomes the new lover of motor-dom,
Developed rapidly in recent years.Electric automobile is even more due to itself inherent advantages, with great development potentiality.
At this stage, due to the technical bottleneck such as the motor radiating of the electric automobile of In-wheel motor driving is poor, unsprung mass is excessive
Problem and to solve, power assembly that electric automobile is typically constituted using single motor and drive axle or by single motor, speed change
The power assembly of device and drive axle composition drives the vehicle to travel.Therefore, contain mostly in the power assembly of existing electric automobile
Drive axle.
Generally, the drive axle in electric automobile is similar with the drive axle in traditional combustion engine automobile, only serves deceleration and increases torsion
Effect, the torque of motor amplification is delivered on wheel and drives running car.Therefore, because conventional carrier in drive axle
" differential not poor turn round " principle, driving torque is averaged distribution to left and right sides wheel.So adhere to unequal feelings on road surface
Traction can not be just utilized under condition well, or even easily causes in low attachment side the unstable period such as trackslip of wheel,
The adhesive ability of driving wheel can not be played.Meanwhile, in the car during tempo turn, from dAlembert principle, the load of automobile
Horizontal transfer can occur for lotus, now, and automobile inner side load reduces, outer side load increase, therefore the attachment characteristic of inner side is deteriorated, and drives
Dynamic bridge may make inboard wheel generation trackslip if still decile torque, automobile unstability.Therefore, automobile need to reduce inboard wheel and turn
Square, increases outboard wheels torque, can so increase the side force nargin of inboard wheel, prevent wheel slip, while can be right
Vehicle produces an additional yaw moment, contributes to turn inside diameter, improves the turning mobility and limit turning energy of vehicle
Power.At present, the technology is mainly in the form of torque fixed direction allocation differential mechanism on some high-end traditional combustion engine automobiles
Using such as super four-wheel drive system (SH-AWD) of Honda Company's exploitation and the super active yaw control system of Mitsubishi exploitation
(SAYC) etc., these torque fixed direction allocation differential mechanisms substantially increase the cornering ability and limit cornering ability of vehicle, but turn
Square fixed direction allocation technology does not have pratical and feasible application but on electric automobile.
Further, since power assembly that electric automobile is typically constituted using single motor and drive axle or by single motor,
The power assembly of speed changer and drive axle composition drives vehicle to travel, to meet the various complicated driving cycles of automobile, must
Ask the single motor of electric automobile to possess higher stand-by power, then certainly existed in most driving cycles similar
" low load with strong power " phenomenon of traditional combustion engine automobile, i.e., the problem of drive efficiency is not very high.In order to improve single motor
The drive efficiency of electric automobile is driven, the design philosophy of hybrid power automobile power assembly can be used for reference using two motors
The secondary driving traveling of one master one, main motor provides constant power output, with auxiliary-motor come " peak load shifting ", regulation main motor workspace
Between, improve vehicle drive efficiency.
Therefore, in order to which torque fixed direction allocation technology is applied in electric automobile, the turning mobility of electric automobile is improved
And Driving, and Drive Efficiency of Electric Vehicle is improved, it is necessary to design a kind of complete by the technical advantage of bi-motor coupling driving
The new bi-motor coupling driving bridge with torque fixed direction allocation function.
The content of the invention
Present invention aim to address the equal defect that can not be adjusted of differential mechanism in conventional ADS driving bridge or so output torque, carry
A kind of bi-motor coupling driving bridge with torque fixed direction allocation function is supplied.
Another object of the present invention is to make control drive mechanism in addition to carrying out torque distribution, additionally it is possible to main driving
Motor torque is coupled, and running car is driven jointly.
The technical scheme that the present invention is provided is：
A kind of bi-motor coupling driving bridge with torque fixed direction allocation function, including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first tooth
Circle, first sun gear is rotatably supported on the first semiaxis, and first gear ring controls the output end of drive mechanism with TV
Connection；
Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second tooth
Circle, second gear ring is fixed on Driving axle housing, and second sun gear is fixedly and coaxially connected with the first sun gear；
3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd tooth
Circle, the 3rd sun gear is fixedly connected with the second planet carrier, and the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the first planet carrier
Separation is engaged；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the third line carrier
Separation is engaged；
Wherein, the first single epicyclic train and the second single epicyclic train have identical characteristic parameter.
Preferably, in addition to：
Second clutch, it is connected with the first planet carrier and Driving axle housing respectively, so that the first planet carrier and drive axle
Housing is separated or engaged；
4th clutch, it is connected with the third line carrier and Driving axle housing respectively, so that the third line carrier and drive axle
Housing is separated or engaged.
Preferably, the TV controls drive mechanism includes TV controlled motors and TV reducing gears；
The TV controlled motors have hollow output shaft, and first semiaxis is rotatably supported at the hollow output
Axle, and passed from hollow output shaft.
Preferably, the TV reducing gears include：
4th single epicyclic train, it includes the 4th sun gear, fourth line star-wheel, fourth line carrier and the 4th tooth
Circle, the 4th sun gear is fixedly connected with hollow output shaft, and the 4th gear ring is fixed on Driving axle housing；
5th single epicyclic train, it includes the 5th sun gear, fifth line star-wheel, fifth line carrier and the 5th tooth
Circle, the 5th sun gear is fixedly connected with fourth line carrier, and the 5th gear ring is fixed on driving axle housing, the fifth line
Carrier is fixedly connected with the first gear ring.
Preferably, the main driving mechanism includes main drive motor and main gear reducer structure.
Preferably, the main gear reducer structure includes：
7th single epicyclic train, it includes the 7th sun gear, the 7th planetary gear, the 7th planet carrier and the 7th tooth
Circle, the 7th sun gear is fixedly connected with main drive motor output shaft, and the 7th gear ring is fixed on Driving axle housing；
6th single epicyclic train, it includes the 6th sun gear, the 6th planetary gear, the 6th planet carrier and the 6th tooth
Circle, the 6th sun gear is fixedly connected with the 7th planet carrier, and the 6th gear ring is fixed on Driving axle housing, and the described 6th
Planet carrier is fixedly connected with differential casing.
Preferably, the main drive motor has hollow output shaft, and the second semiaxis is rotatably supported at described hollow
Output shaft, and passed from hollow output shaft.
A kind of bi-motor coupling driving bridge with torque fixed direction allocation function, it is characterised in that including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single double pinions system, it include the first sun gear, the first two-stage planet wheel, the first planet carrier and
First gear ring, first sun gear is rotatably supported on the first semiaxis, and first gear ring controls drive mechanism with TV
Output end is connected；
Second single double pinions system, it include the second sun gear, the second two-stage planet wheel, the second planet carrier and
Second gear ring, second gear ring is fixed on Driving axle housing, and second sun gear and the first sun gear are coaxially fixed to be connected
Connect；
3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd tooth
Circle, the 3rd sun gear is fixedly connected with the second planet carrier, and the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the first planet carrier
Separation is engaged；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the third line carrier
Separation is engaged；
Wherein, the first single double pinions system has identical feature ginseng with the second single double pinions system
Number.
A kind of bi-motor coupling driving bridge with torque fixed direction allocation function, including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first tooth
Circle, first sun gear is rotatably supported on the first semiaxis, and first gear ring controls the output end of drive mechanism with TV
Connection；
Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second tooth
Circle, second gear ring is fixed on Driving axle housing, and second sun gear is fixedly and coaxially connected with the first sun gear；
3rd single double pinions system, it include the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and
3rd gear ring, the 3rd sun gear is fixedly connected with the second planet carrier, and the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the first planet carrier
Separation is engaged；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the third line carrier
Separation is engaged；
Wherein, the first single epicyclic train and the second single epicyclic train have identical characteristic parameter.
A kind of bi-motor coupling driving bridge with torque fixed direction allocation function, including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single double pinions system, it include the first sun gear, the first two-stage planet wheel, the first planet carrier and
First gear ring, first sun gear is rotatably supported on the first semiaxis, and first gear ring controls drive mechanism with TV
Output end is connected；
Second single double pinions system, it include the second sun gear, the second two-stage planet wheel, the second planet carrier and
Second gear ring, second gear ring is fixed on Driving axle housing, and second sun gear and the first sun gear are coaxially fixed to be connected
Connect；
3rd single double pinions system, it include the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and
3rd gear ring, the 3rd sun gear is fixedly connected with the second planet carrier, and the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the first planet carrier
Separation is engaged；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the third line carrier
Separation is engaged；
Wherein, the first single double pinions system has identical feature ginseng with the second single double pinions system
Number.
The beneficial effects of the invention are as follows：
1st, the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function, solves conventional ADS driving bridge
The drawbacks of middle differential mechanism " differential is not poor to be turned round ", it is possible to achieve on the premise of total zigzag tread patterns torque is not changed, arbitrarily will
Driving torque fixed direction allocation improves the turning mobility and Driving of vehicle to left and right sides wheel.
2nd, master is integrated with the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function, drive axle
Motor, TV controlled motors and conventional gears, integrate driving and transmission, and main drive motor and TV controlled motors are coaxial
Arrangement, structure is compacter, and space availability ratio is high.
3rd, the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function, most of quality belongs to spring
Mounted mass, ride comfort influence is small during on running car.
4th, the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function, TV controlled motors are not being entered
Row torque is also used as assist motor when distributing, and with main drive motor torque coupling, running car is driven jointly, vapour is improved
The dynamic property of car, meets special operation condition significant power demand, in addition, adding the utilization rate of TV controlled motors, improves total driving
Efficiency.
Brief description of the drawings
Fig. 1 is that bi-motor coupling driving bridge embodiment one structure of the present invention with torque fixed direction allocation function is shown
It is intended to.
Fig. 2 is that bi-motor coupling driving bridge embodiment two structure of the present invention with torque fixed direction allocation function is shown
It is intended to.
Fig. 3 is that bi-motor coupling driving bridge embodiment three structure of the present invention with torque fixed direction allocation function is shown
It is intended to.
Fig. 4 is that the bi-motor coupling driving bridge example IV structure of the present invention with torque fixed direction allocation function is shown
It is intended to.
Fig. 5 is the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function in straight trip or positive constant
Torque when speed is turned flows to schematic diagram.
Fig. 6 is the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function in torque fixed direction allocation
Structure diagram under pattern.
Fig. 7 is the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function in torque fixed direction allocation
Under pattern, torque when automobile turns left and torque fixed direction allocation device works flows to schematic diagram.
Fig. 8 is the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function in torque fixed direction allocation
Under pattern, torque when automobile is turned right and torque fixed direction allocation device works flows to schematic diagram.
Fig. 9 is that the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function is helped in TV controlled motors
Structure diagram under force mode.
Figure 10 is the bi-motor coupling driving bridge of the present invention with torque fixed direction allocation function in TV controlled motors
Torque flows to schematic diagram under assistant mode.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
Embodiment one
As shown in figure 1, the bi-motor coupling driving bridge with torque distribution function is main by torque fixed direction allocation device
2000th, traditional bevel differential 1400, main drive motor reducing gear 1500 and main drive motor 1002 are constituted.
In the present embodiment, the torque fixed direction allocation device 2000 be located at drive axle on the left of, also can and main drive motor
1002 reversing of position, are arranged on the right side of drive axle, and torque fixed direction allocation device 2000 is main to be controlled by TV controlled motors 1001, TV
Motor decelerating mechanism 1100 processed, double planet wheel rows of mixing TV coupling mechanisms 1200, single planetary row differential mechanism coupling mechanism 1300, the first clutch
Device 1, second clutch 2, the 3rd clutch 3 and the 4th clutch 4 are constituted.
The TV controlled motors 1001 are a cartridge type inner rotor motors, connect the first semiaxis 1402 of left side wheel
Passed from its hollow rotor shafts endoporus, cartridge type internal rotor is connected with the spline of sun gear 1014 of the first planetary gear train 1010,
The output torque of TV controlled motors 1001 is inputted to the first planetary gear train 1010.The TV controlled motors 1001 pass through bearing branch
Support is on the first semiaxis 1402, and its stator and its housing are fixed with driving axle housing.
The TV controlled motors reducing gear 1100 mainly includes fourth planet train 1010 and fifth line star wheel series 1020.
The fourth planet train 1010 includes sun gear 1014, the planetary gear 1012 of three circumference uniform distributions, planet carrier 1013 and solid
It is scheduled on the ring gear 1011 on driving axle housing.The wherein cartridge type internal rotor spline of sun gear 1014 and TV controlled motors 1001
Connection, the sun gear 1024 of planet carrier 1013 and fifth line star wheel series 1020 is integrated.The fifth line star wheel series 1020 include
Planetary gear 1022, planet carrier 1023 and the ring gear being fixed on driving axle housing of sun gear 1024, three circumference uniform distributions
1021.Wherein sun gear 1024 by bearings on the first semiaxis 1402, the planetary gear train 1030 of planet carrier 1023 and first
Ring gear 1031 be integrated.
Preferably TV controlled motors reducing gear 1100 can be by single planetary gear train, multiple rows of planetary gear train or other forms
Reducing gear constitute, therefore conversion reducing gear 1100 form be not regarded as to the present invention innovation.
The double planet wheel rows of mixing TV coupling mechanisms 1200 mainly include the first planetary gear train 1030, the second planetary gear train 1040,
The planet row characteristic parameter of first clutch 1 and second clutch 2, the first planetary gear train 1030 and the second planetary gear train 1040 must
Must be identical, the type of planet row must be consistent.First planetary gear train 1030 includes sun gear 1034, three circumference uniform distributions
Planetary gear 1032, planet carrier 1033, ring gear 1031, clutch plate 1035.Wherein ring gear 1031 and fifth line star wheel series 1020
Planet carrier 1023 be integrated, sun gear 1034 is integrated with the sun gear 1044 in the second planetary gear train 1040, passes through bearing
It is supported on the first semiaxis 1402.Clutch plate 1035 is connected with the spline of the first semiaxis 1402, and the left end of planet carrier 1033 passes through first
Clutch 1 is connected with clutch plate 1035.When the first clutch 1 is engaged, planet carrier 1033 is connected with clutch plate 1035, and first
Semiaxis 1402 and the constant speed rotation of planet carrier 1033；When the first clutch 1 disconnects, planet carrier 1033 disconnects with clutch plate 1035
Connection, the first semiaxis 1402 and each independent rotation of planet carrier 1033.The right-hand member of planet carrier 1033 passes through second clutch 2 and driving
Axle housing body is connected.When the second clutch 2 is engaged, planet carrier 1033 is fixed on Driving axle housing；The second clutch 2
During disconnection, planet carrier 1033 can rotate relative to Driving axle housing.Second planetary gear train 1040 includes sun gear 1044, three
Planetary gear 1042, planet carrier 1043 and the ring gear 1041 being fixed on driving axle housing of individual circumference uniform distribution.Wherein planet carrier
1043 and the sun gear 1054 of third planet train 1050 be integrated, the sun in the planetary gear train 1030 of sun gear 1044 and first
Wheel 1034 is integrated, by bearings on the first semiaxis 1402.
It should be noted that changing first clutch 1, the clutch species of second clutch 2 or juncture, not
It is considered as the innovation to the present invention.
The single planetary row differential mechanism coupling mechanism 1300 is main by third planet train 1050, the 3rd clutch 3 and the
Four clutches 4 are constituted.The third planet train 1050 includes sun gear 1054, the planetary gear 1052 of three circumference uniform distributions, OK
Carrier 1053, ring gear 1051, and clutch plate 1055.Wherein ring gear 1051 is integrated with differential carrier 1401, sun gear
1054 are integrated with the planet carrier 1043 of the second planetary gear train 1040, and clutch plate 1055 is connected with the spline of the first semiaxis 1402, OK
The right-hand member of carrier 1053 is connected by the 3rd clutch 3 with clutch plate 1055.During the 3rd clutch 3 engagement, planet carrier 1053
It is connected with clutch plate 1055, the first semiaxis 1402 and the constant speed rotation of planet carrier 1053；When the first clutch 3 disconnects, planet
Frame 1053 is disconnected with clutch plate 1055, the first semiaxis 1402 and each independent rotation of planet carrier 1053.Planet carrier 1053 is left
End is connected by the 4th clutch 4 with Driving axle housing.During the 4th clutch 4 engagement, planet carrier 1053 is fixed on driving
On axle housing body；When 4th clutch 4 disconnects, planet carrier 1053 can rotate relative to Driving axle housing.
It should be noted that changing the 3rd clutch 3, the clutch species of the 4th clutch 4 or juncture, not
It is considered as the innovation to the present invention.
Traditional bevel differential 1400 it is main by differential carrier 1401, the first semiaxis 1402, the second semiaxis 1403,
First axle shaft gear 1404, the second axle shaft gear 1405, two cone planetary gears 1406 and 1407, the structures of planetary gear shaft 1408
Into.Wherein the first axle shaft gear 1404 is connected with the spline of the first semiaxis 1402, the second axle shaft gear 1405 and the second semiaxis 1403
Spline is connected, and differential carrier 1401 is by bearings on the second semiaxis 1403.
The main drive motor reducing gear 1500 is located at the right side of drive axle, mainly by the 6th planetary gear train 1060 and the
Seven planetary gear trains 1070 are constituted.6th planetary gear train 1060 includes the planetary gear of sun gear 1064, three circumference uniform distributions
1062nd, planet carrier 1063 and the ring gear 1061 being fixed on driving axle housing.Wherein planet carrier 1063 is with differential carrier 1401
One, the planet carrier 1073 of sun gear 1064 and the 7th planetary gear train 1070 is integrated, and sun gear 1064 is existed by bearings
On second semiaxis 1403.The 7th seniority among brothers and sisters star wheel series 1070 include sun gear 1074, the planetary gear 1072 of three circumference uniform distributions,
Planet carrier 1073 and the ring gear 1071 being fixed on driving axle housing.Wherein sun gear 1074 and main drive motor 1002 is hollow
Inner rotor shaft spline is connected.
Preferably main drive motor reducing gear 1500 can be by single planetary gear train, multiple rows of planetary gear train or other forms
Reducing gear constitute, therefore the form of conversion main drive motor reducing gear 1500 is not regarded as the innovation to the present invention.
The main drive motor 1002 is located at the right side of drive axle, and it is a cartridge type inner rotor motor, and connection is right
Second semiaxis 1403 of side wheel is passed from its hollow rotor shafts endoporus.Cartridge type internal rotor and the 7th planetary gear train 1070
The spline of sun gear 1074 is connected, and driving torque can be inputted main drive motor by sun gear 1074 and slowed down by main drive motor 1002
In mechanism 1500, and it is applied on differential carrier 1401, is finally distributed on the first semiaxis 1402 and the second semiaxis 1403.It is described
Main drive motor 1002 is by bearings on the second semiaxis 1403, and its stator and its housing are fixed with driving axle housing.
Embodiment two
As shown in Fig. 2 the first planetary gear train 1030 and the second planetary gear train in double planet wheel rows of mixing TV coupling mechanisms 1200
1040 be the third planet train 1050 in single planetary bevel gear planet row, single planetary row differential mechanism coupling mechanism 1300 to be single double
Level planetary gear planet row, structure diagram is as shown in the figure.Other structures are identical with embodiment one in the present embodiment.
Embodiment three
As shown in figure 3, the first planetary gear train 1030 and the second planetary gear train in double planet wheel rows of mixing TV coupling mechanisms 1200
The 1040 third planet trains 1050 for being in single two-stage planet wheel planet row, single planetary row differential mechanism coupling mechanism 1300 are
Single planetary bevel gear planet row, structure diagram is as shown in the figure.Other structures are identical with embodiment one in the present embodiment.
Example IV
As shown in figure 4, the first planetary gear train 1030 and the second planetary gear train in double planet wheel rows of mixing TV coupling mechanisms 1200
1040 be the third planet train 1050 in single two-stage planet wheel planet row, single planetary row differential mechanism coupling mechanism 1300
For single two-stage planet wheel planet row, structure diagram is as shown in the figure.Other structures are identical with embodiment one in the present embodiment.
Scheme shown in Fig. 1 to Fig. 4 is the electric differential mechanism of the present invention with torque fixed direction allocation function
Achievable example structure scheme, it is contemplated that system inertia loses, running efficiency, the embodiment scheme shown in Fig. 1 is
Optimal preferred scheme, next to that scheme shown in Fig. 3, is scheme shown in Fig. 2 and Fig. 4 again.
Bi-motor coupling driving bridge operation principle of the present invention with torque fixed direction allocation function is as follows：
1st, the single drive pattern of main drive motor
When automobile is in the operating mode that normal straight is travelled and normal differential is turned, left and right sides wheel driving torque phase
Together, distributed without torque.As shown in figure 1, now first clutch 1, second clutch 2, the 3rd clutch 3, the 4th clutch 4
Disconnect, TV controlled motors are inoperative, torque fixed direction allocation device 2000 is not involved in the driving of vehicle, and automobile is only by main drive motor
1002 drivings, the moment of torsion that main drive motor 1002 is exported is by the moment of torsion increasing action of main drive motor reducing gear 1500 to differential
On device shell 1401, due to the principle of traditional grade of bevel differential mechanism 1400 point moment of torsion, act on differential carrier 1401
Moment of torsion is distributed on the first semiaxis 1402 and the second semiaxis 1403, drives running car.Now, torque distribution stream is as shown in Figure 5.
2nd, torque fixed direction allocation pattern
Turned when automobile is in high speed, it is necessary to by inboard wheel torque fixed direction allocation to outboard wheels to improve turning machine
During dynamic property, as shown in fig. 6, now first clutch 1, the 3rd clutch 3 are engaged, second clutch 2, the 4th clutch 4 are equal
Disconnect, the planet carrier 1033 in the first planetary gear train 1030 is connected with the semiaxis 1402 of clutch plate 1035 and first, the third line star-wheel
It is that planet carrier 1053 in 1050 is connected with the semiaxis 1402 of clutch plate 1055 and first, the intervention vehicle of torque fixed direction allocation device 2000
Driving, carry out both sides wheel torque fixed direction allocation.
If setting the direction of rotation of wheel during Automobile drive as positive direction, otherwise it is negative direction, so that automobile turns left as an example
Analysis：
Now control TV controlled motors 1001 export forward torque T0, the torque passes through TV controlled motors reducing gear 1100
Slow down and increase after torsion, the torque of ring gear 1031 is iT in input double planet wheel rows of mixing TV coupling mechanisms 12000, wherein i is that TV controls electricity
The gearratio of machine reducing gear 1100.So planet carrier 1033 inputs the torque of the first semiaxis 1402 in the first planetary gear train 1030
ForWherein k is the planet row characteristic parameter of the first planetary gear train 1030 and the second planetary gear train 1040.Then TV
The torque that controlled motor 1001 is inputted into the sun gear 1054 in single planetary row differential mechanism coupling mechanism 1300 isSo the torque that planet carrier 1053 inputs the first semiaxis in third planet train 1050 isWherein k5For the planet row characteristic parameter of third planet train 1050.Similarly, the third line star-wheel
The torque for being the input of ring gear 1051 differential carrier 1401 in 1050 isTherefore by the decile of differential carrier 1401
Torque to the first semiaxis 1402 and the second semiaxis 1403 is
So the final torque for inputting the first semiaxis 1402 by TV controlled motors 1001 is in the first planetary gear train 1030
Planet carrier 1033 inputs planet carrier 1053 in the torque of the first semiaxis 1402, third planet train 1050 by first clutch 1
Pass through the torque of the 3rd clutch 3 the first semiaxis 1402 of input, the part of torque three of the decile of differential carrier 1401 to the first semiaxis
Sum is constituted, and its result isThe torque for finally entering the second semiaxis 1403 by TV controlled motors 1001 is
As above as can be seen that being inputted by TV controlled motors 1001 into torque of the first semiaxis 1402 and the second semiaxis 1403 etc.
It is big reversely therefore not change total zigzag tread patterns torque, and the left side wheel torque reduction being connected with the first semiaxis 1402, with the
The connected right side wheels torque increase of two semiaxis 1403, can produce a yaw moment for helping to turn left, improve automobile
Left-hand bend mobility, torque distribution stream now is as shown in Figure 7.If it should be noted that TV controlled motors are exported at this moment
Negative sense torque, then driving torque orientation is assigned to left side wheel by right side wheels, by produce one prevent vehicle from excessively turning
To yaw moment, for keeping stability of automobile.
It can similarly obtain, when automobile high speed is turned right, the output negative sense of motor controller controls TV controlled motors 1001 turns
Square, a yaw moment for helping to turn right can be produced on the premise of total zigzag tread patterns torque is not changed, vapour is improved
The right-hand bend mobility of car, torque distribution stream is as shown in Figure 8.If it should be noted that TV controlled motors export forward direction at this moment
Torque, then driving torque orientation is assigned to right side wheels by left side wheel, by produce one prevent vehicle oversteering
Yaw moment, for keeping stability of automobile.
3rd, TV controlled motors assistant mode
When automobile need not increase turning mobility and maintain stability, TV controlled motors do not work, and for example automobile is straight
During row and normal differential turning condition.In order to improve power assembly utilization rate and drive efficiency, it is to avoid reactive loss, at automobile
When some specific operations, TV controlled motors drive running car jointly with main drive motor.Now, main drive motor provides base
Plinth firm power is exported, TV controlled motors " peak load shifting ".I.e. in starting or anxious accelerating mode, torque-demand is big, in order to keep away
Exempt from main drive motor inefficient interval into peak load, now control TV controlled motors to participate in driving, its output torque and master
Common driving running car after motor coupling；It is smaller in vehicle demand power, and be between TV controlled motors high efficient area
When (such as middle Smaller load runs at a low speed operating mode), can now control TV controlled motors be operated alone vehicle traveling；Needed in vehicle
When asking the power to be between main drive motor high efficient area (such as moderate duty high speed at the uniform velocity driving cycle), main drive is now controlled
Vehicle traveling is operated alone in dynamic motor；The corresponding power output between vehicle demand power is less than main drive motor high efficient area
When, now on the one hand main drive motor can also be responsible for driving vehicle traveling, and being on the other hand responsible for driving, TV controlled motors are counter drags
Generate electricity, adjust main drive motor operating point with TV controlled motors, it is fallen between high efficient area, improve vehicle drive efficiency, so
And this operating mode can cause second energy conversion loss, do not use typically.
As shown in figure 9, now the clutch 3 of first clutch 1 and the 3rd disconnects, the clutch 4 of second clutch 2 and the 4th
Engage, the planet carrier 1033 in the first planetary gear train 1030 is fixed on Driving axle housing, in third planet train 1050
Planet carrier 1053 is fixed on Driving axle housing.Torque fixed direction allocation device 2000 is now only connected with differential shell 1401, not with the
One semiaxis 1402 is connected, and torque fixed direction allocation device 2000 is changed into a reducing gear, and the torque of TV controlled motors is further put
Greatly, it is applied on differential casing.Now vehicle traveling can be each operated alone in TV controlled motors and main drive motor, also may be used
Parallel coupled driving vehicle traveling.During coupling driving, on the one hand it can provide bigger driving torque for automobile to meet vehicle
Accelerate power demand；On the other hand generating regulation main drive motor operating point can be dragged with TV controlled motors are counter, optimizes main motor
Drive efficiency, but this can increase second energy conversion loss, not use typically.Torque distribution stream is as shown in Figure 10.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (10)
1. a kind of bi-motor coupling driving bridge with torque fixed direction allocation function, it is characterised in that including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power
Differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first gear ring, institute
State the first sun gear to be rotatably supported on the first semiaxis, first gear ring controls the output end of drive mechanism to be connected with TV；
Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second gear ring, institute
State the second gear ring to be fixed on Driving axle housing, second sun gear is fixedly and coaxially connected with the first sun gear；
3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd gear ring, institute
State the 3rd sun gear to be fixedly connected with the second planet carrier, the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the separation of the first planet carrier
Or engagement；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the separation of the third line carrier
Or engagement；
Wherein, the first single epicyclic train and the second single epicyclic train have identical characteristic parameter.
2. the bi-motor coupling driving bridge according to claim 1 with torque fixed direction allocation function, it is characterised in that also
Including：
Second clutch, it is connected with the first planet carrier and Driving axle housing respectively, so that the first planet carrier and Driving axle housing
Separation is engaged；
4th clutch, it is connected with the third line carrier and Driving axle housing respectively, so that the third line carrier and Driving axle housing
Separation is engaged.
3. the bi-motor coupling driving bridge according to claim 2 with torque fixed direction allocation function, it is characterised in that institute
Stating TV control drive mechanisms includes TV controlled motors and TV reducing gears；
The TV controlled motors have hollow output shaft, and first semiaxis is rotatably supported at the hollow output shaft, and
And passed from hollow output shaft.
4. the bi-motor coupling driving bridge with torque fixed direction allocation function according to Claims 2 or 3, its feature exists
In the TV reducing gears include：
4th single epicyclic train, it includes the 4th sun gear, fourth line star-wheel, fourth line carrier and the 4th gear ring, institute
State the 4th sun gear to be fixedly connected with hollow output shaft, the 4th gear ring is fixed on Driving axle housing；
5th single epicyclic train, it includes the 5th sun gear, fifth line star-wheel, fifth line carrier and the 5th gear ring, institute
State the 5th sun gear to be fixedly connected with fourth line carrier, the 5th gear ring is fixed on driving axle housing, the fifth line carrier
It is fixedly connected with the first gear ring.
5. the bi-motor coupling driving bridge according to claim 1 or 2 with torque fixed direction allocation function, its feature exists
In the main driving mechanism includes main drive motor and main gear reducer structure.
6. the bi-motor coupling driving bridge according to claim 5 with torque fixed direction allocation function, it is characterised in that institute
Stating main gear reducer structure includes：
7th single epicyclic train, it includes the 7th sun gear, the 7th planetary gear, the 7th planet carrier and the 7th gear ring, institute
State the 7th sun gear to be fixedly connected with main drive motor output shaft, the 7th gear ring is fixed on Driving axle housing；
6th single epicyclic train, it includes the 6th sun gear, the 6th planetary gear, the 6th planet carrier and the 6th gear ring, institute
State the 6th sun gear to be fixedly connected with the 7th planet carrier, the 6th gear ring is fixed on Driving axle housing, the 6th planet
Frame is fixedly connected with differential casing.
7. the bi-motor coupling driving bridge according to claim 6 with torque fixed direction allocation function, it is characterised in that institute
Stating main drive motor has a hollow output shaft, and the second semiaxis is rotatably supported at the hollow output shaft, and from hollow defeated
Passed in shaft.
8. a kind of bi-motor coupling driving bridge with torque fixed direction allocation function, it is characterised in that including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power
Differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single double pinions system, it includes the first sun gear, the first two-stage planet wheel, the first planet carrier and first
Gear ring, first sun gear is rotatably supported on the first semiaxis, and first gear ring controls the output of drive mechanism with TV
End connection；
Second single double pinions system, it includes the second sun gear, the second two-stage planet wheel, the second planet carrier and second
Gear ring, second gear ring is fixed on Driving axle housing, and second sun gear is fixedly and coaxially connected with the first sun gear；
3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd gear ring, institute
State the 3rd sun gear to be fixedly connected with the second planet carrier, the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the separation of the first planet carrier
Or engagement；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the separation of the third line carrier
Or engagement；
Wherein, the first single double pinions system has identical characteristic parameter with the second single double pinions system.
9. a kind of bi-motor coupling driving bridge with torque fixed direction allocation function, it is characterised in that including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power
Differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first gear ring, institute
State the first sun gear to be rotatably supported on the first semiaxis, first gear ring controls the output end of drive mechanism to be connected with TV；
Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second gear ring, institute
State the second gear ring to be fixed on Driving axle housing, second sun gear is fixedly and coaxially connected with the first sun gear；
3rd single double pinions system, it includes the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and the 3rd
Gear ring, the 3rd sun gear is fixedly connected with the second planet carrier, and the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the separation of the first planet carrier
Or engagement；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the separation of the third line carrier
Or engagement；
Wherein, the first single epicyclic train and the second single epicyclic train have identical characteristic parameter.
10. a kind of bi-motor coupling driving bridge with torque fixed direction allocation function, it is characterised in that including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power
Differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, for output control power；
First single double pinions system, it includes the first sun gear, the first two-stage planet wheel, the first planet carrier and first
Gear ring, first sun gear is rotatably supported on the first semiaxis, and first gear ring controls the output of drive mechanism with TV
End connection；
Second single double pinions system, it includes the second sun gear, the second two-stage planet wheel, the second planet carrier and second
Gear ring, second gear ring is fixed on Driving axle housing, and second sun gear is fixedly and coaxially connected with the first sun gear；
3rd single double pinions system, it includes the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and the 3rd
Gear ring, the 3rd sun gear is fixedly connected with the second planet carrier, and the 3rd gear ring is fixedly connected with differential carrier；
First clutch, it is connected with the first semiaxis and the first planet carrier respectively, so that the first semiaxis and the separation of the first planet carrier
Or engagement；
3rd clutch, it is connected with the first semiaxis and the third line carrier respectively, so that the first semiaxis and the separation of the third line carrier
Or engagement；
Wherein, the first single double pinions system has identical characteristic parameter with the second single double pinions system.
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| CN108528188A (en) * | 2018-05-28 | 2018-09-14 | 福州大学 | Novel double-motor couples actuating unit and its control method |
| CN108749916A (en) * | 2018-07-10 | 2018-11-06 | 南京航空航天大学 | A kind of multi-mode steer by wire apparatus and its control method |
| CN111114307A (en) * | 2018-10-31 | 2020-05-08 | 比亚迪股份有限公司 | Drive axle and vehicle and driving method thereof |
| CN111114308A (en) * | 2018-10-31 | 2020-05-08 | 比亚迪股份有限公司 | Drive axle and vehicle and driving method thereof |
| CN113400864A (en) * | 2021-08-12 | 2021-09-17 | 吉林大学 | Multi-mode torque-vectoring electric transaxle using a one-way clutch |
| CN113733883A (en) * | 2021-10-18 | 2021-12-03 | 东风德纳车桥有限公司 | Dual-motor mechanical coupling electric drive bridge and vehicle |
| CN114454711A (en) * | 2022-02-25 | 2022-05-10 | 金龙联合汽车工业（苏州）有限公司 | Coaxial double-planet-row type double-motor drive axle |
| US11642951B2 (en) | 2021-09-06 | 2023-05-09 | Jilin University | Multi-mode torque vectoring electric drive axle with single actuator |
| US11752862B2 (en) | 2021-08-12 | 2023-09-12 | Jilin University | Dual-mode electric drive axle with torque parallel coupling and torque vectoring |
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| CN108528188A (en) * | 2018-05-28 | 2018-09-14 | 福州大学 | Novel double-motor couples actuating unit and its control method |
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| US11752862B2 (en) | 2021-08-12 | 2023-09-12 | Jilin University | Dual-mode electric drive axle with torque parallel coupling and torque vectoring |
| US11642951B2 (en) | 2021-09-06 | 2023-05-09 | Jilin University | Multi-mode torque vectoring electric drive axle with single actuator |
| CN113733883A (en) * | 2021-10-18 | 2021-12-03 | 东风德纳车桥有限公司 | Dual-motor mechanical coupling electric drive bridge and vehicle |
| CN113733883B (en) * | 2021-10-18 | 2022-07-08 | 东风德纳车桥有限公司 | Dual-motor mechanical coupling electric drive bridge and vehicle |
| CN114454711A (en) * | 2022-02-25 | 2022-05-10 | 金龙联合汽车工业（苏州）有限公司 | Coaxial double-planet-row type double-motor drive axle |
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