CN106838200A - A kind of electric differential mechanism with torque fixed direction allocation function - Google Patents
A kind of electric differential mechanism with torque fixed direction allocation function Download PDFInfo
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- CN106838200A CN106838200A CN201710273383.3A CN201710273383A CN106838200A CN 106838200 A CN106838200 A CN 106838200A CN 201710273383 A CN201710273383 A CN 201710273383A CN 106838200 A CN106838200 A CN 106838200A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
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Abstract
The invention discloses a kind of electric differential mechanism with torque fixed direction allocation function, including：Main driving mechanism；The main differential mechanism of bevel gear；TV controls drive mechanism, for output control power；First single epicyclic train, the first sun gear is fixedly and coaxially connected with the first semiaxis, and the first gear ring is connected with control output end；Second single epicyclic train, the second gear ring is fixed on driving axle housing, and the second planet carrier is fixedly connected with the first planet carrier；Second sun gear is rotatably supported on the first semiaxis；3rd single epicyclic train, the 3rd sun gear is fixedly connected with the second sun gear, and the third line carrier is fixedly connected with differential carrier, and the 3rd gear ring is fixedly connected with the first semiaxis；Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.Driving torque the invention enables automobile can be assigned to left and right sides wheel according to what the demand for control of control logic was oriented.
Description
Technical field
It is more particularly to a kind of with the electronic of torque fixed direction allocation function the invention belongs to technical field of electric vehicle transmission
Differential mechanism.
Background technology
Due to energy crisis and the increasingly attention to environmental protection, new-energy automobile is that the development of future automobile is reverse, its
Middle electric automobile even more worldwide obtains fast development.Compared to traditional combustion engine automobile, electric automobile has more preferable
Economy and the feature of environmental protection, cause that electric automobile has significant advantage in terms of environmental protection the characteristics of near zero-emission.Together
When, electric automobile is because the response of motor is fast, low-speed big the features such as there is more preferable acceleration, motor speed,
Torque is easily obtained, and electric automobile more accurately can be controlled.Therefore, electric automobile has great development potentiality.
Power assembly or be made up of motor, speed changer and drive axle that electric automobile is typically constituted using motor and drive axle
Power assembly drive vehicle to travel, the electric automobile of In-wheel motor driving is because unsprung mass is big, wheel hub motor weak heat-dissipating
The shortcomings of do not contain drive axle mostly in scale of mass production, therefore the power assembly of existing electric automobile.
Differential mechanism is the important component in drive axle, due to differential mechanism " the not poor torsion of differential " principle, the driving torque of automobile
Can only equal distribution in left and right wheelses both sides, just cannot be attached using ground well so in the case where road surface attachment is unequal
Put forth effort, or even the unstable period such as trackslip of wheel is easily caused in low attachment side, it is impossible to play the adhesive ability of driving wheel.Together
When, the situation that load is transferred to outboard wheels by inboard wheel can occur, even if in ground attachment when being turned due to vehicle high-speed
In the case of good, the adhesive ability that will also result in outboard wheels is higher than inboard wheel, and now conventional carrier etc. divides moment of torsion extremely
Interior outboard wheels be then likely to result in inboard wheel reach limit of adhesion produce trackslip, make automobile unstability.If by inboard wheel
Partial torque is transferred to outboard wheels, then can increase the side force nargin of inboard wheel, prevents wheel slip, and can be right
Vehicle produces an additional yaw moment, and the torque can be helped promote and guide turn inside diameter, improve turn inside diameter machine
Dynamic property and limit cornering ability.At present, the technology is that some end motions high are applied in the form of torque fixed direction allocation differential mechanism
In type car and top grade SUV, such as the super four-wheel drive system (SH-AWD) and the super active yaw control system of Mitsubishi of Honda
(SAYC) etc., but the technology but not excessive application on electric automobile.
The content of the invention
Present invention aim to address the equal defect that can not be adjusted of differential mechanism or so output torque, there is provided one kind is carried
The electric differential mechanism of torque fixed direction allocation function.
The present invention provide technical scheme be：
A kind of electric differential mechanism 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
Differential casing is delivered to, vehicle traveling is driven；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with 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 the second planet carrier is fixedly connected with the first planet carrier；Second sun gear can revolve
What is turned is supported on the first semiaxis；
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 sun gear, and the third line carrier is fixedly connected with differential carrier, the 3rd tooth
Circle is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
Preferably, the TV controls drive mechanism includes TV controlled motors and TV reducing gears.
Preferably, the TV controlled motors have hollow output shaft, and first semiaxis is rotatably supported at described
Hollow output shaft, 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 connected as control output end with the first gear ring.
Preferably, the main driving mechanism includes main drive motor and main gear reducer structure.
Preferably, the main drive motor has hollow output shaft, and second semiaxis is rotatably supported at described
Hollow output shaft, and passed from hollow output shaft.
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, the 6th row
Carrier is fixedly connected with differential carrier.
A kind of electric differential mechanism 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
Differential casing is delivered to, vehicle traveling is driven；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with 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 row twin-stage star-wheel, the second planet carrier and
Second gear ring, second gear ring is fixed on driving axle housing, and the second planet carrier is fixedly connected with the first planet carrier；Second sun
Wheel is rotatably supported on the first semiaxis；
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 sun gear, and the third line carrier is fixedly connected with differential carrier, the 3rd tooth
Circle is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
A kind of electric differential mechanism 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
Differential casing is delivered to, vehicle traveling is driven；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with 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 the second planet carrier is fixedly connected with the first planet carrier；Second sun gear can revolve
What is turned is supported on the first semiaxis；
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 sun gear, and the third line carrier is fixedly connected with differential carrier, described
3rd gear ring is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
A kind of electric differential mechanism 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
Differential casing is delivered to, vehicle traveling is driven；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with 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 the second planet carrier is fixedly connected with the first planet carrier；Second sun
Wheel is rotatably supported on the first semiaxis；
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 sun gear, and the third line carrier is fixedly connected with differential carrier, described
3rd gear ring is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
Beneficial effects of the present invention are embodied in the following aspects：
1st, the electric differential mechanism with torque fixed direction allocation function that the present invention is provided, solves differential in conventional ADS driving bridge
The drawbacks of device " not poor torsion of differential " so that the driving torque of automobile can be according to being assigned to that the demand for control of control logic is oriented
Left and right sides wheel, realizes the work(of left and right sides wheel torque unequal distribution on the premise of the total driving torque in longitudinal direction is not changed
Can, improve the turning mobility and Driving of vehicle.
2nd, the electric differential mechanism with torque fixed direction allocation function that the present invention is provided, TV controlled motors and main drive motor
Coaxially arranged, structure is compacter, reduces arrangement space.
3rd, the electric differential mechanism with torque fixed direction allocation function that the present invention is provided, belongs to sprung mass, therefore will not
Unsprung mass is dramatically increased as wheel hub motor, ride comfort influence is small during on running car.
Brief description of the drawings
Fig. 1 is of the present invention with the structural representation of torque fixed direction allocation functional electric differential mechanism embodiment one.
Fig. 2 is of the present invention with the structural representation of torque fixed direction allocation functional electric differential mechanism embodiment two.
Fig. 3 is of the present invention with the structural representation of torque fixed direction allocation functional electric differential mechanism embodiment three.
Fig. 4 is of the present invention with torque fixed direction allocation functional electric differential mechanism example IV structural representation.
Fig. 5 is the torque flow direction with torque fixed direction allocation functional electric differential mechanism when automobile is kept straight on of the present invention
Schematic diagram.
Fig. 6 is the torque with torque fixed direction allocation functional electric differential mechanism in automobile normal turn of the present invention
Flow to schematic diagram.
Fig. 7 turns left and torque orientation with torque fixed direction allocation functional electric differential mechanism for of the present invention in automobile
Torque when distributor works flows to schematic diagram.
Fig. 8 turns right and torque orientation with torque fixed direction allocation functional electric differential mechanism for of the present invention in automobile
Torque when distributor works flows to schematic diagram.
Specific 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 invention provides a kind of electric differential mechanism with torque distribution function, mainly being oriented by torque
Distributor 2000, 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 left side (also can and main drive motor
1002 reversing of position, are arranged in drive axle right side), mainly by TV controlled motors 1001, TV reducing gears 1100, double-planet
Row TV coupling mechanisms 1200 and single planetary row differential mechanism coupling mechanism 1300 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, the spline connection of sun gear 1014 of cartridge type internal rotor and fourth planet train 1010,
The output torque of TV controlled motors 1001 is input into fourth planet train 1010.The TV controlled motors 1001 are by bearing branch
On the first semiaxis 1402, its stator and its housing are fixed with driving axle housing for support.
The TV reducing gears 1100 mainly include fourth planet train 1010 and fifth line star wheel series 1020.Described 4th
Planet circular system 1010 includes 1014, three planetary gears 1012 of circumference uniform distribution of sun gear, planet carrier 1013 and is fixed on driving
Ring gear 1011 on axle housing.The wherein cartridge type internal rotor spline connection of sun gear 1014 and TV controlled motors 1001, OK
Carrier 1013 is integrated with the sun gear 1024 of fifth line star wheel series 1020.The fifth line star wheel series 1020 include sun gear
1024th, three planetary gears of circumference uniform distribution 1022, planet carriers 1023 and the ring gear 1021 being fixed on driving axle housing.Wherein
Sun gear 1024 by bearings on the first semiaxis 1402, the ring gear of the planet circular system 1030 of planet carrier 1023 and first
1031 are integrated.
Preferably TV reducing gears 1100 can be by the reductor of single planet circular system, multiple rows of planet circular system or other forms
Structure is constituted, therefore the form of conversion reducing gear 1100 is not regarded as to innovation of the invention.
The double planet wheel rows of mixing TV coupling mechanisms 1200 mainly include the first planet circular system 1030 and the second planet circular system 1040,
Their planet row characteristic parameter must be identical, and the type of planet row must be consistent.First planet circular system 1030 is included too
Sun wheel 1034, three planetary gears 1032 of circumference uniform distribution, planet carrier 1033 and ring gears 1031.Wherein ring gear 1031 and the 5th
The planet carrier 1023 of planet circular system 1020 is integrated, the spline connection of 1034 and first semiaxis of sun gear 1402, planet carrier 1033 with
The planet carrier 1043 of the second planet circular system 1040 is integrated.Second planet circular system 1040 includes 1044, three circles of sun gear
The planetary gear 1042 of Zhou Junbu, planet carrier 1043 and the ring gear 1041 being fixed on driving axle housing.The wherein He of sun gear 1044
The sun gear 1054 of third planet train 1050 is integrated, and sun gear 1044 is by bearings on the first semiaxis 1402.
The single planetary row differential mechanism coupling mechanism 1300 is mainly made up of third planet train 1050.The third planet
Train 1050 includes sun gear 1054, three planetary gears 1052 of circumference uniform distribution, planet carriers 1053, ring gear 1051.Wherein too
Sun wheel 1054 is integrated with the second sun gear 1044, and planet carrier 1053 is fixedly connected with differential carrier 1401, ring gear 1051 and
The spline connection of first semiaxis 1402.
Traditional bevel differential 1400 it is main by differential carrier 1401, the first semiaxis 1402, the second semiaxis 1403,
First axle shaft gear 1404,1405, two cone planetary gears 1406 and 1407 of the second axle shaft gear, the structure of planetary gear shaft 1408
Into.Wherein the first axle shaft gear 1404 and the spline connection of the first semiaxis 1402, the second axle shaft gear 1405 and the second semiaxis 1403
Spline connection, 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 planet circular system 1060 and the
Seven planet circular systems 1070 are constituted.6th planet circular system 1060 includes 1064, three planetary gears of circumference uniform distribution of sun gear
1062nd, planet carrier 1063 and the ring gear 1061 being fixed on driving axle housing.Wherein planet carrier 1063 is with differential carrier 1401
Integrally, sun gear 1064 is integrated with the planet carrier 1073 of the 7th planet circular system 1070, and sun gear 1064 is existed by bearings
On second semiaxis 1403.It is described 7th seniority among brothers and sisters star wheel series 1070 include 1074, three planetary gears 1072 of circumference uniform distribution of sun gear,
Planet carrier 1073 and the ring gear 1071 being fixed on driving axle housing.Wherein sun gear 1074 is hollow with main drive motor 1002
Inner rotor shaft spline connection.
Preferably main drive motor reducing gear 1500 can be by single planet circular system, multiple rows of planet circular system or other forms
Reducing gear constitute, therefore the form of conversion main drive motor reducing gear 1500 is not regarded as to innovation of the 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 planet circular system 1070
Driving torque can be input into main drive motor and slowed down by the spline connection of sun gear 1074, main drive motor 1002 by sun gear 1074
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 by bearings on the second semiaxis 1403, with driving axle housing fix by its stator and its housing.
Embodiment two
As shown in Fig. 2 in the present embodiment, the first planet circular system 1030 and second in double planet wheel rows of mixing TV coupling mechanisms 1200
Planet circular system 1040 is single planetary bevel gear planet row, the third planet train 1050 in single planetary row differential mechanism coupling mechanism 1300
It is two-stage planet wheel planet row, structure diagram is as shown in the figure.
Embodiment three
As shown in figure 3, in the present embodiment, the first planet circular system 1030 and second in double planet wheel rows of mixing TV coupling mechanisms 1200
Planet circular system 1040 is two-stage planet wheel planet row, the third planet train in single planetary row differential mechanism coupling mechanism 1300
1050 is single planetary bevel gear planet row, and structure diagram is as shown in the figure.
Example IV,
As shown in figure 4, in the present embodiment, the first planet circular system 1030 and second in double planet wheel rows of mixing TV coupling mechanisms 1200
Planet circular system 1040 is two-stage planet wheel planet row, the third planet train in single planetary row differential mechanism coupling mechanism 1300
1050 is two-stage planet wheel planet row, and structure diagram is as shown in the figure.
Scheme shown in Fig. 1 to Fig. 4 is the electric differential mechanism with torque fixed direction allocation function of the present invention
Attainable example structure scheme, it is contemplated that system inertia loss, running efficiency, the embodiment scheme shown in Fig. 1 is
Optimal preferred scheme, next to that scheme shown in Fig. 3, is again scheme shown in Fig. 2 and Fig. 4.
Electric differential mechanism operation principle with torque fixed direction allocation function of the present invention is as follows：
By taking the example structure sketch of the electric differential mechanism with torque fixed direction allocation function shown in Fig. 1 as an example, explanation
Operation principle.
When automobile straight-line travelling, left and right sides wheel driving torque is identical, without torque distribution, therefore TV controlled motors
Without control electric signal in 1001, TV controlled motors are inoperative, and automobile is only driven by main drive motor 1002, main drive motor
1002 output moments of torsion by the moment of torsion increasing action of main drive motor reducing gear 1500 to differential carrier 1401, due to tradition
The principle of the grade of bevel differential mechanism 1400 point moment of torsion, acts on the moment of torsion on differential carrier 1401 and is distributed to the first semiaxis
1402 and second on semiaxis 1403, drives running car.If the direction of rotation for setting wheel during Automobile drive is positive direction, otherwise
It is negative direction.Now, differential carrier 1401, the first semiaxis 1402 are identical with the rotary speed of the second semiaxis 1403, third planet
The planetary gear 1052 of train 1050 only revolves round the sun without rotation with differential carrier 1401, therefore, ring gear 1051 and sun gear 1054
Constant speed rotation.And the rotation of the ring gear 1051 of the sun gear 1034 and third planet train 1050 due to the first planet circular system 1030
Rotary speed is identical, and the sun gear 1044 of the second planet circular system 1040 is integrated with the sun gear 1054 of third planet train 1050,
So the constant speed rotation of sun gear 1044 in the planet circular system 1040 of sun gear 1034 and second in the first planet circular system 1030.Cause
It is the first planet circular system 1030 and the concurrence carrier of the second planet circular system 1040, two sun wheel speeds are also identical, so ring gear
1031 rotating speed is also identical with the rotating speed of ring gear 1041, and ring gear 1041 is fixed, and rotating speed is 0, so the rotating speed of ring gear 1031
Also it is 0.Due to 1100 torques for changing the output of TV controlled motors 1001 of TV reducing gears, the moment of torsion of output is not being changed just
Negative direction, therefore, when automobile is kept straight on, the internal rotor rotating speed of TV controlled motors 1001 also for 0, TV controlled motors are inoperative, no
Output torque, automobile is only driven by main drive motor 1002, and torque distribution stream is as shown in Figure 5.
When the normal differential of automobile is turned, left and right sides wheel driving torque is identical, is controlled without torque distribution, therefore TV
Without control electric signal in motor 1001, TV controlled motors are inoperative, and automobile is only driven by main drive motor 1002, main to drive electricity
The moment of torsion of the output of machine 1002 by the moment of torsion increasing action of main drive motor reducing gear 1500 to differential carrier 1401, due to passing
The principle of the grade point moment of torsion of system bevel differential mechanism 1400, acts on the moment of torsion on differential carrier 1401 and is distributed to the first semiaxis
1402 and second on semiaxis 1403, drives running car.
So that the normal differential of automobile turns left as an example, if the direction of rotation for setting wheel during Automobile drive is positive direction, otherwise it is
Negative direction.Then single planetary row differential mechanism coupling mechanism 1050 is obtained by single planetary bevel gear planet row rotating speed formula：
nS5+k5nR5-(k5+1)nPC5=0
N in formulaS5It is the rotating speed of 1050 sun gear of third planet train 1054, nR5For the ring gear of third planet train 1051 turns
Speed, nPC5It is the planet carrier rotating speed of third planet train 1053, k5It is third planet train planet row characteristic parameter.Because automobile is left
Turn, so the rotating speed of differential carrier 1401 is more than the rotating speed of the first semiaxis 1402, so：
nR5＜ nPC5
So：
nS5＞ nR5
Rotating speed of the rotating speed of sun gear 1054 more than ring gear 1051 i.e. in third planet train 1050, so for duplicate rows
In star row TV coupling mechanisms 1200, the rotating speed of sun gear 1034 in the first planet circular system 1030 is less than in the second planet circular system 1040
The rotating speed of sun gear 1044.Again because the first planet circular system 1030 and the concurrence carrier of the second planet circular system 1040, double-planet
Row TV coupling mechanisms 1200 then have：
nS3+knR3=nS4+knR4
N in formulaS3It is the rotating speed of 1030 sun gear of the first planet circular system 1034, nR3It is the ring gear of the first planet circular system 1030
1031 rotating speeds, nS4It is the rotating speed of 1040 sun gear of the second planet circular system 1044, nR4For 1041 turns of 1040 ring gear of the second planet circular system
Speed, k is the planet row characteristic parameter of the first planet circular system 1030 and the second planet circular system 1040.And because：
nS3＜ nS4, and nR4=0
So：
nR3＞ 0
That is the rotating speed of ring gear 1031 of the first planet circular system 1030 is just, so the internal rotor rotating speed of TV controlled motors 1001
Also for just.Therefore, when the normal differential of automobile turns left, TV controlled motors 1001 are input into without electric signal, do not have torque output, TV controls
The cartridge type internal rotor of motor processed is pulled by torque divider 2000 and rotated with positive direction.Torque distribution stream is as shown in Figure 6.
Similarly can proper automobile normal differential when turning right, TV controlled motors 1001 are input into without electric signal, do not have torque output,
The cartridge type internal rotor of TV controlled motors is pulled by torque divider 2000 and rotated with negative direction.Torque distribution stream is same as schemed
Shown in 6.
When automobile high speed is turned, it is necessary to inboard wheel torque fixed direction allocation to outboard wheels is motor-driven to improve turning
During property.If the direction of rotation for setting wheel during Automobile drive is positive direction, otherwise it is negative direction, divides by taking automobile left-hand bend as an example
Analysis.Now motor controller controls TV controlled motors 1001 export forward torque T0(T0Be on the occasion of), the torque pass through TV reductors
Structure 1100 slows down after increasing torsion, and the torque of ring gear 1031 is iT in input double planet wheel rows of mixing TV coupling mechanisms 12000, wherein i is TV
The gearratio of reducing gear 1100.So the torque that sun gear 1034 is input into the first semiaxis 1402 in the first planet circular system 1030 isThe torque that then TV controlled motors 1001 are input into the sun gear 1054 in single planetary row differential mechanism coupling mechanism 1300 isSo the torque that the ring gear 1051 in third planet train 1050 is input into the first semiaxis 1402 isPlanet carrier
1053 torques being input into differential carrier 1401 areBy the decile of differential carrier 1401 to the He of the first semiaxis 1402
The torque of the second semiaxis 1403 isSo the final torque that the first semiaxis 1402 is input into by controlled motor 1001
It is that internal tooth in the torque of the first semiaxis 1402, third planet train 1050 is input into by sun gear 1034 in the first planet circular system 1030
Circle 1051 is input into torque, the part sum structure of torque three of the decile of differential carrier 1401 to the first semiaxis 1402 of the first semiaxis 1402
Into, its result forThe torque for finally entering the second semiaxis 1403 by TV controlled motors 1001 isAs above as can be seen that being input into the power into the first semiaxis 1402 and the second semiaxis 1403 by TV controlled motors 1001
Square etc. is big reversely, therefore does not change total zigzag tread patterns torque, and the left side wheel torque being connected with the first semiaxis 1402 is reduced,
The right side wheels torque being connected with the second semiaxis 1403 increases, and can produce a yaw moment for helping to turn left, and improves
The left-hand bend mobility of automobile.It should be noted that identical when now the rotating speed of TV controlled motors 1001 turns left with normal differential.
Torque distribution stream now is as shown in Figure 7.If it should be noted that TV controlled motors export negative sense torque at this moment, driving
Torque is assigned to left side wheel by what is oriented by right side wheels, will produce a yaw moment for preventing vehicle oversteering, uses
In holding stability of automobile.
Can similarly obtain, when automobile high speed is turned right, the output negative sense of motor controller controls TV controlled motors 1001 turns
Square, can produce a yaw moment for helping to turn right on the premise of total zigzag tread patterns torque is not changed, and improve vapour
The right-hand bend mobility of car.It should be noted that identical when now the rotating speed of TV controlled motors 1001 is turned right with normal differential.This
When torque distribution stream it is as shown in Figure 8.If it should be noted that TV controlled motors export forward torque at this moment, driving and turning
Square is assigned to right side wheels by what is oriented by left side wheel, will produce a yaw moment for preventing vehicle oversteering, is used for
Keep stability of automobile.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in specification and implementation method
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
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 electric differential mechanism 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, drives vehicle traveling；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with the first semiaxis, first gear ring is connected with the output end of TV control drive mechanisms；
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, the second planet carrier is fixedly connected with the first planet carrier；Second sun gear is rotatable
It is supported on the first semiaxis；
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 sun gear, the third line carrier is fixedly connected with differential carrier, the 3rd gear ring with
First semiaxis is fixedly connected；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
2. the electric differential mechanism with torque fixed direction allocation function according to claim 1, it is characterised in that the TV controls
Drive mechanism processed includes TV controlled motors and TV reducing gears.
3. the electric differential mechanism with torque fixed direction allocation function according to claim 2, it is characterised in that the TV controls
Motor processed has a hollow output shaft, and first semiaxis is rotatably supported at the hollow output shaft, and from hollow output
Passed in axle.
4. the electric differential mechanism with torque fixed direction allocation function according to claim 2, it is characterised in that the TV subtracts
Fast mechanism includes：
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 connected with the first gear ring as control output end.
5. the electric differential mechanism with torque fixed direction allocation function according to claim 1, it is characterised in that the main drive
Motivation structure includes main drive motor and main gear reducer structure.
6. the electric differential mechanism with torque fixed direction allocation function according to claim 5, it is characterised in that the main drive
Dynamic motor has a hollow output shaft, and second semiaxis is rotatably supported at the hollow output shaft, and from hollow output
Passed in axle.
7. the electric differential mechanism with torque fixed direction allocation function according to claim 5, it is characterised in that the master subtracts
Fast mechanism 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 carrier
It is fixedly connected with differential carrier.
8. a kind of electric differential mechanism 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, drives vehicle traveling；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with 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 row twin-stage star-wheel, the second planet carrier and second
Gear ring, second gear ring is fixed on driving axle housing, and the second planet carrier is fixedly connected with the first planet carrier；Second sun gear can
What is rotated is supported on the first semiaxis；
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 sun gear, the third line carrier is fixedly connected with differential carrier, the 3rd gear ring with
First semiaxis is fixedly connected；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
9. a kind of electric differential mechanism 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, drives vehicle traveling；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with the first semiaxis, first gear ring is connected with the output end of TV control drive mechanisms；
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, the second planet carrier is fixedly connected with the first planet carrier；Second sun gear is rotatable
It is supported on the first semiaxis；
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 sun gear, and the third line carrier is fixedly connected with differential carrier, and the described 3rd
Gear ring is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
10. a kind of electric differential mechanism 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, drives vehicle traveling；
TV controls drive mechanism, its opposite side for being arranged on the differential mechanism, for output torque distribution 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 fixedly and coaxially connected with 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 the second planet carrier is fixedly connected with the first planet carrier；Second sun gear can
What is rotated is supported on the first semiaxis；
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 sun gear, and the third line carrier is fixedly connected with differential carrier, and the described 3rd
Gear ring is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273383.3A CN106838200B (en) | 2017-04-21 | 2017-04-21 | Electric differential with torque directional distribution function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273383.3A CN106838200B (en) | 2017-04-21 | 2017-04-21 | Electric differential with torque directional distribution function |
Publications (2)
| Publication Number | Publication Date |
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| CN106838200A true CN106838200A (en) | 2017-06-13 |
| CN106838200B CN106838200B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710273383.3A Active CN106838200B (en) | 2017-04-21 | 2017-04-21 | Electric differential with torque directional distribution function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400864A (en) * | 2021-08-12 | 2021-09-17 | 吉林大学 | Multi-mode torque-vectoring electric transaxle using a one-way clutch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025499A2 (en) * | 1979-08-20 | 1981-03-25 | Caterpillar Tractor Co. | Differential for multiplying torquing force and drive train |
| US20100234160A1 (en) * | 2009-03-11 | 2010-09-16 | Toyota Jidosha Kabushiki Kaisha | Differential gear device |
| JP2012236579A (en) * | 2011-05-13 | 2012-12-06 | Nsk Ltd | Drive device for hybrid vehicle |
| US20170023114A1 (en) * | 2015-02-11 | 2017-01-26 | Jilin University, China | Drive axle of electric distribution torque |
| CN206111987U (en) * | 2016-10-09 | 2017-04-19 | 吉林大学 | Planetary electronic differential mechanism of double clutch |
-
2017
- 2017-04-21 CN CN201710273383.3A patent/CN106838200B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025499A2 (en) * | 1979-08-20 | 1981-03-25 | Caterpillar Tractor Co. | Differential for multiplying torquing force and drive train |
| US20100234160A1 (en) * | 2009-03-11 | 2010-09-16 | Toyota Jidosha Kabushiki Kaisha | Differential gear device |
| JP2012236579A (en) * | 2011-05-13 | 2012-12-06 | Nsk Ltd | Drive device for hybrid vehicle |
| US20170023114A1 (en) * | 2015-02-11 | 2017-01-26 | Jilin University, China | Drive axle of electric distribution torque |
| CN206111987U (en) * | 2016-10-09 | 2017-04-19 | 吉林大学 | Planetary electronic differential mechanism of double clutch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400864A (en) * | 2021-08-12 | 2021-09-17 | 吉林大学 | Multi-mode torque-vectoring electric transaxle using a one-way clutch |
| CN113400864B (en) * | 2021-08-12 | 2023-06-06 | 吉林大学 | Multi-mode torque vectoring electric drive axle using one-way clutch |
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| Publication number | Publication date |
|---|---|
| CN106838200B (en) | 2023-04-07 |
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