CN108297619A - A kind of duplex planet train torque fixed direction allocation electric drive axle - Google Patents
A kind of duplex planet train torque fixed direction allocation electric drive axle Download PDFInfo
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- CN108297619A CN108297619A CN201810203457.0A CN201810203457A CN108297619A CN 108297619 A CN108297619 A CN 108297619A CN 201810203457 A CN201810203457 A CN 201810203457A CN 108297619 A CN108297619 A CN 108297619A
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- planetary gear
- shell
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- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims description 11
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- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
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- 238000009827 uniform distribution Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
- B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K17/04—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
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
Abstract
The invention discloses a kind of duplex planet train torque fixed direction allocation electric drive axles, including：Main drive motor, power output shaft connect bevel differential shell by deceleration mechanism；Wherein, first semiaxis is rotatably supported on the shell, and it is connected with the first axle shaft gear of the bevel differential across the shell, the second semiaxis is rotatably supported on the shell, and is connected with the second semiaxis of the bevel differential across the shell；TV controls driving motor；Duplex planet train comprising the first sun gear, the second sun gear, first end planetary gear, second end planetary gear and first planet carrier.Realize the arbitrary distribution of left and right sides wheel torque.
Description
Technical field
The present invention relates to a kind of duplex planet train torque fixed direction allocation electric drive axles, and the invention belongs to electric vehicle biographies
Dynamic technical field.
Background technology
In recent years, it is constantly progressive with the improvement of people ' s living standards with technology, people also put forward the quality of automobile
Increasingly higher demands are gone out, by being initially only gradually transitioned into safety, comfort, economy as the demand of walking-replacing tool
Property in the demands such as driving pleasure, people are also increasing year by year the demand of high-performing car, therefore, for high-performing car
Innovation Input be also very necessary.
Electric vehicle is the important development direction that future transportation mode adapts to energy-saving and emission-reduction, receives various countries and payes attention to, and
Good development was achieved in recent years.The development of Electric Cars in China is started in full-sized bus and small-sized low side electric vehicle, so
And with the development of electronic information technology, electric vehicle has promoted just gradually to information-based, high-endization development with tesla, than Asia
The high-performance of enlightening Tang Wei representatives, sports type electric vehicle.Therefore, in order to improve the cornering ability of electric vehicle, develop high-performance
Electric vehicle, the application of the electric drive axle with torque fixed direction allocation function is to improve that electric vehicle engineering is horizontal and product
The important means of power.
Traditional automobile drive axle is located at transmission system end, mainly by main reducing gear, differential mechanism, semiaxis and driving axle housing
Deng composition, wherein differential mechanism is the important component in drive axle.Due to " the not poor torsion of differential " principle of differential mechanism, lead to engine
The driving torque of transmission can only be evenly distributed on the wheel of both sides, so just can not be fine in the case where road surface attachment is unequal
Utilize traction, or even there is the case where wheel-slip in low attachment side, cause the unstability of vehicle.Meanwhile automobile
In tempo turn, since the load of inside shifts outward, it is also possible to cause inboard wheel to reach limit of adhesion generation and trackslip
Make automobile unstability.If driving torque can arbitrarily distribute between the wheel of both sides, the attachment pole of each wheel can be made full use of
Limit, is significantly reduced above-mentioned unstability operating mode.In addition, when road surface attachment is unequal at the wheel of both sides, driving torque can be by low
The lateral high attachment side transfer of attachment one, to eliminate the operating mode that low attachment single wheel skids.When automobile is in tempo turn,
If driving torque is by inboard wheel, wheel shifts outward, can prevent inboard wheel from trackslipping, and increase the lateral of vehicle
Power nargin, while an additional yaw moment is generated, which can help to push and guide turn inside diameter, improve vehicle and turn
Curved mobility and limit cornering ability.
Currently, the technology is to be applied to some high-end sports cars and SUV in the form of torque fixed direction allocation differential mechanism
In, such as the super four-wheel drive system (SH-AWD) of Honda and Mitsubishi super active sideway control system (SAYC), however the skill
But there is no excessive applications on electric vehicle for art, in addition, the existing torque fixed direction allocation for being applied to traditional 4 wheel driven automobile is poor
Fast device technology often realizes the cross of torque by means of switching two groups of multi-disc electromagnetism or hydraulic clutch control planetary gear mechanism
It is distributed to transfer.There are sliding wear loss when combining and disconnect due to clutch, system power dissipation is increased.And clutch locking power
Square is limited, and there are response lags for action, this affects the implementation effect and quality of torque fixed direction allocation.In addition, the prior art
The two groups of clutches in left and right are generally required to control the distribution to the left of torque or distribute to the right, which increase system costs and axial length
Degree, to space requirement height.Therefore to solve above-mentioned deficiency, the present invention proposes one kind based on duplex planet train to realize that torque is fixed
To the electric drive axle of distribution function, it is intended to increase electric vehicle driving pleasure, limit cornering ability and mobility.
Invention content
The present invention has designed and developed a kind of duplex planet train torque fixed direction allocation electric drive axle, can solve traditional drive
The defect that differential mechanism both sides output torque in bridge is equal and cannot adjust is moved, both sides wheel torque is realized without clutch
Fixed direction allocation, it is simple in structure.
Technical solution provided by the invention is：
A kind of duplex planet train torque fixed direction allocation electric drive axle, including：
Main drive motor, power output shaft connect bevel differential shell by deceleration mechanism；
Wherein, the first semiaxis is rotatably supported on the shell, and poor across the shell and the bevel gear
First axle shaft gear of fast device is connected, and the second semiaxis is rotatably supported on the shell, and passes through the shell and institute
The second semiaxis for stating bevel differential is connected；
TV controls driving motor；
Duplex planet train comprising the first sun gear, the second sun gear, first end planetary gear, second end planet tooth
Wheel and first planet carrier；
Wherein, first sun gear is rotatably supported at institute with the first half axis connection, second sun gear
It states on the first semiaxis and is fixedly connected with the bevel differential shell；The first end planetary gear and second end planet tooth
Wheel is co-axially located in planet axis, and the planet axis connects the power that the TV controls driving motor by the first planet carrier
Output shaft.
Preferably, the first end planetary gear is nibbled around the circumferential uniformly arrangement of the first sun gear and with the first sun gear
It closes, the second end planetary gear is engaged around the circumferential uniformly arrangement of the second sun gear and with the second sun gear.
Preferably,
The bevel differential further includes：
Planetary gear shaft passes through the bevel differential casing center, and is rotatably supported at the bevel gear
On the shell of differential mechanism；
First cone planetary gear is fixedly mounted in the planetary gear shaft, and simultaneously with first half axle gear
Wheel and the second axle shaft gear external toothing；
Second cone planetary gear is fixedly mounted in the planetary gear shaft, and simultaneously with first half axle gear
Wheel and the second axle shaft gear external toothing；
Wherein, first cone planetary gear and second cone planetary gear are symmetrical arranged.
Preferably, first semiaxis and second semiaxis are respectively from bevel differential shell both sides center
Hole is pierced by and is pivotally supported on the shell.
Preferably, the bevel differential shell is pivotably supported on Driving axle housing.
Preferably, the deceleration mechanism includes：
First single planetary gear train comprising third sun gear, the first planetary gear, the second planet carrier and the first gear ring；Institute
The first gear ring to be stated to be fixed on Driving axle housing, the third sun gear is pivotally supported on the second semiaxis, and described second
Planet carrier is fixedly connected with the shell of the bevel differential；
Second single planetary gear train comprising the 4th sun gear, the second planetary gear, third planet carrier and the second gear ring；Institute
The 4th sun gear is stated to be pivotally supported on the second semiaxis and connect with the power output shaft spline of the main drive motor, institute
It states the second gear ring to be fixed on Driving axle housing, the third planet carrier is fixedly connected with the third sun gear.
Preferably, first semiaxis and the second semiaxis are separately connected vehicle both sides wheel.
Preferably, first sun gear and the planetary transmission ratio of the first end and second sun gear with
The planetary transmission ratio of second end is unequal.
Preferably, the TV driving motors are cartridge type inner rotor motor, including：
Rotor is fixedly connected with the power output shaft；
Stator is fixedly connected with the TV driving motors shell.
Preferably, the TV driving motors shell is fixedly connected with the Driving axle housing.
Advantageous effect of the present invention：
1, the electric drive axle provided by the invention with torque fixed direction allocation function, solves conventional carrier " differential
The drawbacks of not poor torsion " so that the driving torque of automobile can be oriented according to the demand for control of control logic is assigned to a rear axle left side
Right both sides wheel both may be implemented torque and be transferred to the slow side of rotating speed from the fast single wheel of rotating speed, can also realize torque from
The slow single wheel of rotating speed is transferred to the fast side vehicle of rotating speed.By the design of planetary gear speed ratio, can not change substantially it is vertical
Under the premise of total driving torque, the arbitrary distribution of left and right sides wheel torque is realized, the turning mobility of vehicle is improved
And driving pleasure.
2, the electric drive axle provided by the invention with torque fixed direction allocation function, using TV control motor as
The driving power source of torque fixed direction allocation mechanism, cooperation single one planet row are achieved that the function of torque fixed direction allocation, phase
Compare the prior art, simplifies the structure of torque fixed direction allocation mechanism, level of integrated system is high, compact-sized, space hold is small.It is right
It is simpler reliable in the control of realization torque fixed direction allocation function.And it is bored using tradition identical with existing automobile drive axle
Gear differential mechanism, Product Process inheritance are good.
3, the electric drive axle provided by the invention with torque fixed direction allocation function, compared to freedom more equally may be implemented
The wheel hub motor distribution drive system of torque distribution, the present invention do not increase unsprung mass, do not interfere with the ride comfort of automobile.
Description of the drawings
Fig. 1 is the electric drive axle structure schematic diagram of the present invention with torque fixed direction allocation function.
Fig. 2 is the electric drive axle of the present invention with torque fixed direction allocation function in no torque distribution requirements
Torque flow to schematic diagram.
Fig. 3 is for the electric drive axle of the present invention with torque fixed direction allocation function in driving torque by the second semiaxis
Torque when being distributed to the first semiaxis flows to schematic diagram.
Fig. 4 is for the electric drive axle of the present invention with torque fixed direction allocation function in driving torque by the first semiaxis
Torque when being distributed to the second semiaxis flows to schematic diagram.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
As shown in Figure 1, the present invention provides a kind of duplex planet train torque fixed direction allocation electric drive axle, mainly by torque
Fixed direction allocation device 2000,1001 structure of bevel differential mechanism 1300, main drive motor deceleration mechanism 1000 and main drive motor
At.
Torque fixed direction allocation device 2000 is located on the left of drive axle (can also slow down with main drive motor 1001 and main drive motor
The main power source assembly reversing of position that mechanism 1000 forms is arranged on the right side of drive axle), motor is mainly controlled by TV
1002, compound planet gear planetary gear train 1400 is constituted.
It is a cartridge type inner rotor motor that TV, which controls motor 1002, connects the first semiaxis 1301 from its of left side wheel
Hollow rotor shafts endoporus, which is pierced by, is pivotally supported at TV control motor sleeve rotor endoporus.TV controls the hollow shaft of motor 1002
Formula internal rotor is fixedly connected with the planet carrier 1404 of compound planet gear planetary gear train 1400, and the output that TV controls motor 1002 turns
Square can be transferred to compound planet gear planetary gear train 1400 by planet carrier 1404.The stator of TV control motor 1002 and its
Shell is fixed with driving axle housing.
Compound planet gear planetary gear train 1400 mainly includes the duplex planet of first 1401, three pairs of circle distributions of sun gear
Gear 1402, the second sun gear 1403 and planet carrier 1404.The compound planet gear 1402 is mainly by first end planetary gear
1405 and second end planetary gear 1406 constitute, the two be fixedly connected also can overall processing be integrated.Wherein the first sun gear
1401 connect with 1301 spline of the first semiaxis, and the second sun gear 1403 is fixedly connected with differential casing 1308, with differential carrier
Body 1308 rotates together.
It should be noted that gear biography can be increased between TV control motors 1002 and compound planet gear planetary gear train 1400
Dynamic device constitutes the torque that deceleration mechanism exports TV control motors 1002 and is amplified, therefore, TV control motors 1002 with
Increasing any type of deceleration mechanism, clutch or torque-converters between compound planet gear planetary gear train 1400 cannot be to this hair
The substantive innovation of bright composition.
Bevel differential mechanism 1300, mainly by the first semiaxis 1301, the second semiaxis 1302, the first axle shaft gear
1303,1304, two cone planetary gears 1305 of the second axle shaft gear and 1306, planetary gear shaft 1307 and differential casing
1308 are constituted.Wherein the first axle shaft gear 1303 is connected with 1301 spline of the first semiaxis for connecting left side wheel.Second half axle gear
Wheel 1304 is connected with 1302 spline of the second semiaxis for connecting right side wheels, and the first semiaxis 1301 and the second semiaxis 1302 are respectively from difference
1308 both sides centre bore of fast device shell is pierced by and is pivotally supported on differential casing 1308, and eventually by constant velocity universal
Section (not shown) goes out power to left and right sides wheel.Differential casing 1308 is pivotably supported on Driving axle housing,
1308 left side of differential casing is fixedly connected with second output terminal driven gear 1302.Planetary gear shaft 1307 is from differential carrier
1308 center of body passes through and is rotatably supported on differential casing 1308, and two cone planetary gears 1305 are installed at middle part
With 1306.Two cone planetary gears 1305 and 1306 are arranged in differential mechanism center both sides face-to-face, and respectively be arranged in it
1304 external toothing of the first axle shaft gear 1303 and the second axle shaft gear of the left and right sides.
Main drive motor deceleration mechanism 1000 is located at the right side of drive axle, mainly by the first planetary gear train 1100 and the second row
Star wheel series 1200 are constituted.First planetary gear train 1100 includes the first planet of first 1101, three circumference uniform distributions of ring gear
Wheel 1102, third sun gear 1103 and the second planet carrier 1104.Wherein the first gear ring 1101 is fixed on Driving axle housing, third
Sun gear 1103 is pivotally supported on the second semiaxis 1302, and solid with the third planet carrier 1204 of the second planetary gear train 1200
It is linked together, the second planet carrier 1104 is fixedly connected with differential casing 1308.Second planetary gear train 1200 includes second
Second planetary gear 1202, the 4th sun gear 1203 and third planet carrier 1204 of 1201, three circumference uniform distributions of ring gear.Wherein
Two gear rings 1201 are fixed on Driving axle housing, and the 4th sun gear 1203 is pivotally supported on the second semiaxis 1302, and with
The hollow inner rotor shaft spline of main drive motor 1001 connects.
Preferably main drive motor deceleration mechanism 1000 can be by single planetary gear train, multiple rows of planetary gear train or other forms
The speed reducer form that is configured to, therefore converts main drive motor deceleration mechanism 1000 be not regarded as the innovation to the present invention.
Main drive motor 1001 is located at the right side of main drive motor deceleration mechanism 1000, is a cartridge type internal rotor
Motor, the second semiaxis 1302 for connecting right side wheels are pierced by from its hollow rotor shafts endoporus.Cartridge type internal rotor and the second row
1203 spline of sun gear of star wheel series 1200 connects, and driving torque can be transferred to by main drive motor 1001 by sun gear 1203
Main drive motor deceleration mechanism 1000, and being applied on differential carrier 1308 is finally distributed to the first semiaxis 1301 and the second half
On axis 1302, running car is driven.The hollow internal rotor of the main drive motor 1001 is rotatably supported at the second semiaxis
On 1302, stator and its shell are fixedly connected with Driving axle housing.
Operation principle is as follows：
Example structure schematic diagram with the torque fixed direction allocation electric drive axle shown in FIG. 1 based on double-rotor machine is
Example, illustrates operation principle.
(1) when automotive service is in normal straight driving cycle, when without torque distribution requirements, TV is controlled not to be had in motor 1002
There is control signal, TV control motors are inoperative, and automobile is only driven by main drive motor 1001 at this time, and main drive motor 1001 exports
Torque by 1000 torque increasing action to differential carrier 1308 of main drive motor deceleration mechanism, due to bevel differential
1300 etc. divide the principle of torque, and the torque being applied on differential carrier 1308 is distributed to the first semiaxis 1301 and the second semiaxis 1302
On, drive running car.At this point, due to automobile straight-line travelling, left and right sides vehicle wheel rotational speed is identical, therefore the first semiaxis 1301,
Second semiaxis 1302 is identical with the rotating speed of 1308 three of differential casing.Again due to the of compound planet gear planetary gear train 1400
One sun gear 1401 is connect with 1301 spline of the first semiaxis, so the first sun gear 1401 is identical as 1301 rotating speed of the first semiaxis.
Again since the second sun gear 1403 of compound planet gear planetary gear train 1400 is fixedly connected with differential casing 1308, the
Two sun gears 1403 are identical as 1308 rotating speed of differential casing, so the first sun gear of compound planet gear planetary gear train 1400
1401 is identical as the rotating speed of the second sun gear 1403, by the rotating speed formula of compound planet gear planetary gear train：
Wherein, nPCFor the rotating speed of compound planet gear planetary gear train planet carrier, nS1For the rotating speed of the first sun gear, nS1For
The rotating speed of first sun gear, r1For the first sun gear reference radius, r2For first end planetary gear reference radius, r3It is
Two end planetary gear reference radius, r4For the second sun gear reference radius, and the first sun gear 1401 and first end planet
Relationship between the transmission ratio and the second sun gear 1403 and the transmission ratio of second end planetary gear 1406 of wheel 1405 must satisfy
When the first sun gear 1401 of compound planet gear planetary gear train 1400 and it can be seen from above-mentioned rotating speed formula
The rotating speed of two sun gears 1403 is identical, i.e. nS1=nS2When, there is nPC=nS1=nS2, i.e. the rotating speed of planet carrier 1404 and first sun
Wheel 1401 is identical with the rotating speed of the second sun gear 1403, and first end planetary gear 1405 and second end planetary gear 1406 are without certainly at this time
Turn, only revolves round the sun with two sun gear constant speed.The internal rotor for being controlled motor with TV due to planet carrier 1404 again is fixedly connected, so
TV control motor internal rotor rotating speed it is identical as the first sun gear 1401 and 1403 rotating speed of the second sun gear, also with the first semiaxis 1301
Rotating speed is identical, and TV controls the servo-actuated idle running of motor 1002, but inoperative, not output torque.Torque distribution stream is as shown in Figure 2.
(2) when the normal differential turning of automobile, left and right sides wheel driving torque is identical, is distributed without torque, therefore, TV
Motor 1002 is controlled without control signal, TV control motors are inoperative, not output torque, the torque that main drive motor 1001 exports
By in 1000 torque increasing action to differential carrier 1308 of main drive motor deceleration mechanism, then it is distributed to 1301 He of the first semiaxis
On second semiaxis 1302, running car is driven.Torque distribution stream is also shown in FIG. 2.
(3) when automotive service when operating mode when driving torque is distributed from from the second semiaxis 1302 to the first semiaxis 1301, if
The direction of rotation of wheel when automobile moves forward is set as positive direction, otherwise is negative direction.TV controls motor 1002 and receives at this time
It is started to control signal, starts external output torque.
It can be obtained by the power conservation of input into compound planet gear planetary gear train：
TPCnPC+TS1nS1+TS2nS2=0 (2)
Wherein TPCIt is an externally input the torque into compound planet gear planetary gear train planet carrier, TS1It is an externally input into first too
The torque of sun wheel, TS2It is an externally input the torque into the second sun gear, nPCFor turning for compound planet gear planetary gear train planet carrier
Speed, nS1For the rotating speed of the first sun gear, nS1For the rotating speed of the first sun gear.Duplex row can be derived from by (1) formula and (2) formula
The torque formula of star planetary gear train is：
Wherein r1For the first sun gear reference radius, r2For first end planetary gear reference radius, r3For second end row
Star gear compound graduation radius of circle, r4For the second sun gear reference radius.
If it is T that TV, which controls motor output torque,0(T0For positive value), torque formula can obtain shown in (3) formula, and the torque is logical
The first sun gear 1401 input for crossing compound planet gear planetary gear train 1400 is into the torque of the first semiaxis 1301It is by the torque that the second sun gear 1403 is inputted into differential casing 1308By
Bevel differential mechanism 1300 etc. divides the principle of torque, and the torque acted on differential casing 1308 is distributed to the first semiaxis
1301 and second on semiaxis, and therefore, the torque that the first semiaxis 1301 obtains is torque and the cone tooth of the first sun gear 1401 input
The sum of the torque that differential mechanism 1300 inputs is taken turns, result isThe
The torque that two semiaxis 1302 obtain is the torque that bevel differential 1300 inputs, the result is thatFirst
The torque of semiaxis 1301 increasesThe torque of second semiaxis 1302 is reducedIt realizes
Distribution of the driving torque from the second semiaxis 1302 to the first semiaxis 1301.It should be noted that in design compound planet gear
When planetary gear train 1400, the transmission ratio of rational the first sun gear of design 1401 and first end planetary gear 1405Too with second
The transmission ratio of sun wheel 1403 and second end planetary gear 1406Between relationship so thatWithIt is roughly the same, but not phase
Deng, you can so that the first semiaxis 1301 and the torque knots modification on the second semiaxis 1302 are roughly equal, then it is vertical can to maintain automobile
In the case of generally remaining constant to total driving torque, realize that torque is distributed from the second semiaxis 1302 to the first semiaxis 1301.Turn
Square distribution stream is as shown in Figure 3.
(4) when automotive service when operating mode when driving torque is distributed from from the first semiaxis 1301 to the second semiaxis 1302, if
The direction of rotation of wheel when automobile moves forward is set as positive direction, otherwise is negative direction.TV controls motor 1002 and receives at this time
It is started to control signal, starts external output torque.It can similarly obtain, if TV control motor output torques are-T0(T0For positive value),
Torque formula can obtain shown in (3) formula, the first sun gear 1401 which passes through compound planet gear planetary gear train 1400
Input is into the torque of the first semiaxis 1301Enter differential carrier by the input of the second sun gear 1403
The torque of body 1308 isThe principle for dividing torque by bevel differential mechanism 1300 etc., acts on differential mechanism
Torque on shell 1308 is distributed on the first semiaxis 1301 and the second semiaxis, and therefore, what the first semiaxis 1301 obtained turns
Square is the torque of the first sun gear 1401 input and the sum of the torque that bevel differential 1300 inputs, and result isThe torque that second semiaxis 1302 obtains is cone
The torque that gear differential mechanism 1300 inputs, the result is thatThe torque of first semiaxis 1301 is reducedThe torque of second semiaxis 1302 increasesDriving torque is realized by the first half
Distribution of the axis 1301 to the second semiaxis 1302.It should be noted that when designing compound planet gear planetary gear train 1400, rationally
The first sun gear of design 1401 and first end planetary gear 1405 transmission ratioWith the second sun gear 1403 and second end row
The transmission ratio of star gear 1406Between relationship so thatWithIt is roughly the same but unequal, you can so that the first semiaxis
1301 is roughly equal with the torque knots modification on the second semiaxis 1302, then can maintain the total driving torque of automobile longitudinal and generally remain
In the case of constant, realize that torque is distributed from the first semiaxis 1301 to the second semiaxis 1302.Torque distribution stream is as shown in Figure 4.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. a kind of duplex planet train torque fixed direction allocation electric drive axle, which is characterized in that including：
Main drive motor, power output shaft connect bevel differential shell by deceleration mechanism；
Wherein, the first semiaxis is rotatably supported on the shell, and across the shell and the bevel differential
The first axle shaft gear be connected, the second semiaxis is rotatably supported on the shell, and across the shell and the cone
Second semiaxis of gear differential mechanism is connected；
TV controls driving motor；
Duplex planet train comprising the first sun gear, the second sun gear, first end planetary gear, second end planetary gear and
First planet carrier；
Wherein, first sun gear and the first half axis connection, second sun gear are rotatably supported at described the
It is fixedly connected on one semiaxis and with the bevel differential shell；The first end planetary gear and second end planetary gear are same
Axis is arranged in planet axis, and the planet axis connects the power output that the TV controls driving motor by the first planet carrier
Axis.
2. duplex planet train torque fixed direction allocation electric drive axle according to claim 1, which is characterized in that described
One end planetary gear is engaged around the circumferential uniformly arrangement of the first sun gear and with the first sun gear, and the second end planetary gear is around the
Two sun gears are circumferential uniformly to arrange and is engaged with the second sun gear.
3. duplex planet train torque fixed direction allocation electric drive axle according to claim 2, which is characterized in that
The bevel differential further includes：
Planetary gear shaft passes through the bevel differential casing center, and is rotatably supported at the bevel gear differential
On the shell of device；
First cone planetary gear is fixedly mounted in the planetary gear shaft, and simultaneously with first axle shaft gear and
The second axle shaft gear external toothing；
Second cone planetary gear is fixedly mounted in the planetary gear shaft, and simultaneously with first axle shaft gear and
The second axle shaft gear external toothing；
Wherein, first cone planetary gear and second cone planetary gear are symmetrical arranged.
4. duplex planet train torque fixed direction allocation electric drive axle according to claim 3, which is characterized in that described
From bevel differential shell both sides, centre bore is pierced by and is pivotally supported at respectively for one semiaxis and second semiaxis
On the shell.
5. duplex planet train torque fixed direction allocation electric drive axle according to claim 4, which is characterized in that the cone
Gear differential mechanism shell is pivotably supported on Driving axle housing.
6. duplex planet train torque fixed direction allocation electric drive axle according to claim 1 or 2, which is characterized in that institute
Stating deceleration mechanism includes：
First single planetary gear train comprising third sun gear, the first planetary gear, the second planet carrier and the first gear ring；Described
One gear ring is fixed on Driving axle housing, and the third sun gear is pivotally supported on the second semiaxis, second planet
Frame is fixedly connected with the shell of the bevel differential；
Second single planetary gear train comprising the 4th sun gear, the second planetary gear, third planet carrier and the second gear ring；Described
Four sun gears are pivotally supported on the second semiaxis and are connect with the power output shaft spline of the main drive motor, and described
Two gear rings are fixed on Driving axle housing, and the third planet carrier is fixedly connected with the third sun gear.
7. duplex planet train torque fixed direction allocation electric drive axle according to claim 4, which is characterized in that described
One semiaxis and the second semiaxis are separately connected vehicle both sides wheel.
8. duplex planet train torque fixed direction allocation electric drive axle according to claim 1, which is characterized in that described
One sun gear and the planetary transmission ratio of the first end and second sun gear and the planetary biography of the second end
It moves than unequal.
9. duplex planet train torque fixed direction allocation electric drive axle according to claim 1 or 2, which is characterized in that institute
It is cartridge type inner rotor motor to state TV driving motors, including：
Rotor is fixedly connected with the power output shaft；
Stator is fixedly connected with the TV driving motors shell.
10. duplex planet train torque fixed direction allocation electric drive axle according to claim 9, which is characterized in that described
TV driving motors shell is fixedly connected with the Driving axle housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203457.0A CN108297619B (en) | 2018-03-13 | Electric drive axle for directional torque distribution of duplex planetary gear train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203457.0A CN108297619B (en) | 2018-03-13 | Electric drive axle for directional torque distribution of duplex planetary gear train |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108297619A true CN108297619A (en) | 2018-07-20 |
| CN108297619B CN108297619B (en) | 2024-04-19 |
Family
ID=
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| CN114537045A (en) * | 2022-03-28 | 2022-05-27 | 重庆嘉陵全域机动车辆有限公司 | Coaxial electric drive axle assembly with self-locking and releasing functions and working method |
| CN116494743A (en) * | 2023-06-12 | 2023-07-28 | 中国重汽集团济南动力有限公司 | Electric drive axle system and car |
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| CN109774452A (en) * | 2019-03-04 | 2019-05-21 | 吉林大学 | The electric parallel-serial hybrid power system of bevel gear type oil |
| CN109774452B (en) * | 2019-03-04 | 2024-04-12 | 吉林大学 | Bevel gear type oil-electricity series-parallel hybrid power system |
| CN114537045A (en) * | 2022-03-28 | 2022-05-27 | 重庆嘉陵全域机动车辆有限公司 | Coaxial electric drive axle assembly with self-locking and releasing functions and working method |
| CN114537045B (en) * | 2022-03-28 | 2024-02-27 | 重庆嘉陵全域机动车辆有限公司 | Coaxial electric drive axle assembly with self-locking and disengaging functions and working method |
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| CN116494743B (en) * | 2023-06-12 | 2024-04-16 | 中国重汽集团济南动力有限公司 | Electric drive axle system and car |
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