CN109606023A - A kind of double-motor hybrid drive axle and its control method - Google Patents
A kind of double-motor hybrid drive axle and its control method Download PDFInfo
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- CN109606023A CN109606023A CN201811432378.3A CN201811432378A CN109606023A CN 109606023 A CN109606023 A CN 109606023A CN 201811432378 A CN201811432378 A CN 201811432378A CN 109606023 A CN109606023 A CN 109606023A
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- gear
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- drive axle
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Classifications
-
- 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
-
- 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
- B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of double-motor hybrid drive axle and its control method, the drive axle is mainly made of differential mechanism, power-driven gear, semiaxis and the driving axle housing of main reducing gear, energy distribution of torque.The present invention uses bi-motor, and the drive shaft cooperation of driving motor and internal combustion engine exports total driving torque；Torque distributes motor to the torque that distributes on the first output shaft and the second output shaft, and the torque of torque distribution motor output is transmitted by three bevel gears being attached to outside differential carrier.The present invention uses fuel, electric hybrid, low-carbon environment-friendly；The present invention, come fixed direction allocation torque, improves safety, stability and mobility of the vehicle under turning condition using the combination of motor and bevel gear.
Description
Technical field
The present invention relates to vehicle transmission field, in particular to the bi-motor mixing of a kind of integrated torque fixed direction allocation function is dynamic
Power drive bridge and its control method.
Background technique
As the measure of countries in the world environmental protection is increasingly stringenter, hybrid vehicle is due to its energy conservation, low emission etc.
Feature becomes an emphasis of automotive research and exploitation.Usually said hybrid vehicle, generally refers to oil electric mixed dynamic
Automobile, i.e., using traditional internal combustion engine (diesel engine or gasoline engine) and motor as power source, the engine also having is by changing
It makes using other alternative fuel, such as compressed natural gas, propane and alcohol fuel etc..Hybrid vehicle is existing combustion engine powered
The advantages of property is good, reaction is fast and longevity of service, and the advantages of have motor pollution-free and low noise, reach engine and electricity
The best match of motivation.
Automobile drive axle is to be located at power train end to change revolving speed and torque from speed changer, and pass them to
The mechanism of driving wheel.Drive axle is generally made of main reducing gear, differential mechanism, wheel drive and driving axle housing etc., wherein poor
Fast device is an important component of drive axle.Differential mechanism is that one kind can be such that left and right (or forward and backward) driving wheel realizes with difference turn
The mechanism of speed rotation, common differential mechanism are mainly made of left and right axle shaft gear, two planetary gears and tooth rest, when automobile turns
It is curved traveling or on uneven road surface when driving, it can be such that left and right wheels roll with different rotating speeds, i.e., guarantee two sides driving wheel make
PURE ROLLING.
When automobile turning, the vehicle wheel rotational speed on the outside of bend is fast, and the vehicle wheel rotational speed of curve inner side is slow, and the presence of differential mechanism makes
The vehicle wheel rotational speed in interior outside has obtained reasonable distribution.But open differential can only mean allocation two-wheeled torque, that is, work as vehicle
When turning, the torque of two sides wheel is equal.In order to realize that vehicle preferably controls, outside driven wheel should be more defeated than interior side drive wheel
Bigger torque out can make vehicle turning more steady in this way, and improve the excessively curved speed of vehicle, improve the peace of vehicle
Quan Xing, stability and mobility.
In the technology of the existing differential mechanism for being related to torque distribution, as patent (201510072654.X) discloses one kind
Electric differential mechanism with two-row planetary gear torque fixed direction allocation mechanism, including driving motor, main differential mechanism, shell, deceleration
Planetary gear train, coupling planetary gear set and dual planetary gear system can determine the driving torque selectivity by its transmission
To distributing to two output shafts；But structure is complicated for its two-row planetary gear, is driven chain length, occupied space is big, may will affect difference
Fast device works normally.
Summary of the invention
In order to solve the problems in the existing technology, the invention discloses a kind of the double of integrated torque fixed direction allocation function
Electric machine mixed power drive axle, mainly by main reducing gear, differential mechanism, power-driven gear, semiaxis and the driving of energy distribution of torque
Axle housing composition, using the hybrid mode of fuel and electric power, output torque on fixed direction allocation semiaxis improves vehicle driving
Safety, stability and mobility.
The technical solution of the present invention is as follows: a kind of double-motor hybrid drive axle, including main reducing gear, differential mechanism, electric power
Driving device and semiaxis, the main reducing gear include drive shaft, taper driving gear and bevel ring gear, the driving the tip of the axis
It is connected with taper driving gear, taper driving gear is engaged with bevel ring gear；The differential mechanism includes differential carrier, planet tooth
Wheel, sun gear, bevel gear and torque distribute motor, and differential carrier and bevel ring gear are connected, are matched on differential carrier by bearing
Planetary gear is closed, planetary gear is engaged with sun gear, and sun gear is nested on semiaxis, nested on planetary gear outrigger shaft
Have a first bevel gear, second bevel gear, first bevel gear, second bevel gear side engaged with third hand tap gear, third cone
Gear is nested in one end of torque distribution rotor, and the torque distribution rotor is nested in differential carrier periphery, torque
Distribution rotor and torque distribution motor pass through magnetic field interaction；The power-driven gear includes driving motor and driving
Rotor, driving motor rotor is nested in the second output shaft periphery, and driving motor rotor one end and differential carrier end face are tight
Gu driving motor rotor and driving motor pass through magnetic field interaction；First output shaft and the second output shaft constitute semiaxis；
The planetary gear includes first planetary gear and the second planetary gear；The sun gear includes the first sun gear and second
Sun gear；The drive axle further includes axle housing, the drive shaft also with the bearing fit that is fixed on axle housing inner upper end；The difference
The both ends of fast device shell and the bearing fit for being fixed on both ends inside axle housing.
A kind of control method of double-motor hybrid drive axle, the control method are suitable for vehicle along straight-line travelling or vehicle
Turning when, electronic control unit ECU makees between two kinds of power of fuel and electric power according to vehicle demand power and battery current electric quantity
The selection of drive mode out；Electronic control unit ECU distributes the size of motor output torque according to speed and steering wheel angle, control,
To realize left and right wheels driving moment differential distribution of the vehicle under turning condition；The drive mode include be driven by electricity,
Fuel driven and electric power and fuel combination drive, generate four kinds of operational modes: charge operation, operation power, boosting operation and
It operates normally.
The beneficial effects of the present invention are:
The present invention is in the structure basis of open differential, in the structure basis of existing drive axle, installs a drive additional
Dynamic motor, a distribution motor and three bevel gears, driving motor and internal combustion engine cooperate to drive axle input power, distribute motor
Torque is transmitted by three bevel gears, the output torque on the first output shaft of fixed direction allocation and the second output shaft.Driving motor and
The operation of motor is distributed all by electronic control unit ECU real-time control: electricity ECU current according to the power and battery of vehicle demand,
Suitable selection is made between fuel and electric power both power；ECU is according to speed and steering wheel angle, control distribution motor
The level of torque of output, to make up common vehicle turning when two output shafts on torque can not fixed direction allocation deficiency, most
Realize that vehicle preferably travels under different motion state eventually.The combination of motor and three bevel gears is distributed using torque to realize
The fixed direction allocation of torque, compact-sized, transmission chain is short, safe and reliable to operation；Driving motor in the present invention is together with internal combustion engine
It outputs power to two output shafts, the mixing for realizing fuel driven and being driven by electricity, energy saving, reduction exhaust gas discharge,
Meet the theory of sustainable development, and noise is small in driving process, improves driver comfort；In addition common differential is compensated for
Device is unable to the deficiency of fixed direction allocation torque, improves the excessively curved speed of vehicle, safety, stability when improving vehicle driving
And mobility, so that vehicle has been obtained better control.The present invention is Curve guide impeller on the basis of common drive axle, therefore
It is low with transformation processing cost, manufacturing process and the good feature of process flow inheritance, and the present invention is mostly mechanical structure, is convenient for
Dismounting, maintenance and repair.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of drive axle of the present invention；
Fig. 2 is the structure diagram of drive axle of the present invention；
Fig. 3 is the working state figure of straight line drive axle when driving；
Fig. 4 is the working state figure of drive axle when vehicle turns left；
Fig. 5 is the working state figure of drive axle when vehicle is turned right；
Fig. 6 is the control principle drawing equipped with the driving bridge vehicle.
Label in figure is described as follows:
1. drive shaft；2. bearing A；3. driving axle housing；4. bearing B；5. taper drives gear；6. bevel ring gear；7. bolt
A；8. differential carrier；9. bearing C；10. bolt B；11. driving motor；12. bearings D；13. driving motor rotor；14. second is defeated
Shaft；15. second bevel gear；16. the second planetary gear；17. bearing E；18. secondary sun wheel；19. the first sun gear；
20. torque distributes motor；21. torque distributes rotor；22. bearing F；23. bearing G；24. the first output shaft；25. third is bored
Gear；26. first bevel gear；27. bearing H；28. first planetary gear.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
The present invention is in the structure basis of original drive axle, and both ends inside driving axle housing increase by two motors: one
Motor is known as driving motor, and for exporting total driving torque together with internal combustion engine, the rotor of this motor is connected with differential carrier, turns
Square passes sequentially through differential carrier, planetary gear, sun gear from rotor, finally in the first output shaft and the second output shaft
Upper output；Another motor is known as torque distribution motor, has the function of torque on two output shafts of fixed direction allocation, torque distribution
The torque of motor output passes sequentially through bevel gear, planetary gear, sun gear from the rotor of distribution motor, finally the
One output shaft and the second output on-axis output, distribute the torque on two output shafts, and Vehicular turn is different, torque distribution
The case where it is also different.
As shown in Figure 1, a kind of double-motor hybrid drive axle of integrated torque fixed direction allocation function of the present invention is subtracted by master
The composition such as fast device, the differential mechanism of distribution of torque, power-driven gear, semiaxis and driving axle housing.
The main reducing gear is mainly made of drive shaft 1, taper driving gear 5 and bevel ring gear 6, drive shaft 1 and bearing
A2, bearing B4 cooperation, bearing A2, bearing B4 are fixed on 3 inner upper end of axle housing, and the end of drive shaft 1 and taper driving gear 5 are logical
Spline fitted is crossed, taper driving gear 5 is engaged with bevel ring gear 6, and bevel ring gear 6 is anchored on differential carrier 8 by bolt A7；When
When drive shaft 1 rotates, torque passes sequentially through taper driving gear 5, bevel ring gear 6, bolt A7 and passes to differential carrier 8, and it is poor to drive
Fast device shell 8 rotates.
The differential mechanism of the distribution of torque by differential carrier 8, first planetary gear 28, the second planetary gear 16, first too
Positive gear 19, secondary sun wheel 18, first bevel gear 26, second bevel gear 15, third hand tap gear 25, torque distribute motor 20
It is formed with torque distribution rotor 21, differential carrier 8 and the bearing C9 and bearing G23 for being fixed on 3 inside left and right ends of axle housing
Cooperation, ensure that differential carrier 8 can stablize rotation in axle housing 3；First sun gear 19 and secondary sun wheel 18 pass through key
Connection is respectively nested on the first output shaft 24 and the second output shaft 14, and the first sun gear 19 is nibbled with first planetary gear 28
Close, secondary sun wheel 18 engages with the second planetary gear 16, first planetary gear 28 and the second planetary gear 16 but respectively with
Bearing H27, bearing the E17 cooperation being fixed on differential carrier 8；Outside differential carrier 8, first bevel gear 26 and the second cone tooth
Wheel 15 by key connecting be respectively nested in first planetary gear 28, the second planetary gear 16 outrigger shaft on, first bevel gear 26
It is engaged simultaneously with third hand tap gear 25 with the side of second bevel gear 15, third hand tap gear 25 is nested in torque point by key connecting
The right end of distribution machine rotor 21, torque distribution rotor 21 are nested in the periphery of differential carrier 8, and be fixed on inside axle housing 3
Torque distribution rotor bearing 22 (torque distribution rotor bearing 22 is located on the right side of bearing G23) cooperation of left end, torque
Distribution motor 20 is fixed on inside axle housing 3, is located between torque distribution rotor bearing 22 and third hand tap gear 25, torque point
By magnetic field interaction, torque, which distributes motor 20, can distribute motor to torque for distribution machine rotor 21 and torque distribution motor 20
Rotor 21 exports certain torque.
The power-driven gear is mainly made of driving motor 11 and driving motor rotor 13, and driving motor 11 is fixed on
3 inside right end of axle housing, driving motor rotor 13 are nested in 14 periphery of the second output shaft, meanwhile, the left end of driving motor rotor 13
8 right side of differential carrier is anchored on by bolt B 10, the right end of driving motor rotor 13 and is fixed on 3 inside right end of axle housing
Bearings D 12 cooperate, by magnetic field interaction, driving motor 11 can be to driving for driving motor rotor 13 and driving motor 11
Rotor 13 exports certain driving torque, and rotor 13 and differential carrier 8 is driven to rotate.
The semiaxis is mainly made of the first output shaft 24 and the second output shaft 14, and the driving axle housing is axle housing 3.
As shown in Fig. 2, this is the structure diagram of the drive axle.To keep working principle expression apparent, Fig. 2 is compared to figure
1 omits the parts such as axle housing, bearing, bolt, and is simplified to partial component.It is described respectively on the basis of Fig. 2 below
When vehicle is in different motion state, the working condition of corresponding drive axle internal component.
Under the control of electronic control unit ECU, internal combustion engine and driving motor 11 cooperate, and can provide four kinds of operation moulds
Formula: charge operation, operation power, boosting operation and normal operation.It is interior when the battery capacity deficiency powered to driving motor 11
Combustion engine will generate the torque bigger than the torque needed for promoting, and the difference of the torque that internal combustion engine provides and torque needed for propulsion is then used
In charging the battery, electric energy is converted by mechanical energy；When the torque very little of internal combustion engine output, the efficiency of operation is very low, institute
Will stop internal combustion engine operation at this time and be changed into operation power；When the acceleration of vehicle needs and required torque is greater than internal combustion engine
Full load torque when, driving motor 11 can also start to work, boosting internal combustion engine, to obtain better accelerating ability；Other
Situation only has torque of internal combustion engine, and driving motor does not work, and referred to as operates normally.
As shown in figure 3, this for vehicle along straight-line travelling when drive axle working principle diagram, solid black lines arrow indicates each structure
The direction of part rotation, dotted line indicate driving torque stream.When vehicle is along straight line normally travel, power comes from internal combustion engine or driving
Motor: the torque of internal combustion engine output drives gear 5 to act on differential carrier 8 by drive shaft 1 and taper, makes differential carrier 8
Rotation；Driving motor 11 receives the signal from electronic control unit ECU, and driving rotor 13 rotates, so that differential carrier 8 be driven to revolve
Turn.The rotation of differential carrier 8 has driven the revolution of first planetary gear 28 and the second planetary gear 16, since vehicle edge is straight at this time
Line normally travel, the first output shaft 24 is identical with the revolving speed of the second output shaft 14, so first planetary gear 28 and the second planet
Gear 16 is not done rotation movement.First bevel gear 26 and second bevel gear 15, which also only revolve, does not do rotation, revolve revolving speed and the
One planetary gear 28 and the second planetary gear 16 are identical.Torque distribution motor 20 receives the signal from electronic control unit ECU, drives
Torque distributes rotor 21 and rotates, and torque distributes rotor 21 and third hand tap gear 25 is driven to rotate, third hand tap gear 25
Movement needs are synchronous with first bevel gear 26 and second bevel gear 15, i.e., site of engagement contacts with each other but do not generate extruding force, this
When torque distribution motor 20 effective torque is not exported to first planetary gear 28 and the second planetary gear 16, from without torque
Distribution.
As shown in figure 4, this is working principle diagram of Ackermann steer angle drive axle, solid black lines arrow indicates oneself of each component
Turn direction, black dotted lines arrow indicates the direction of distribution of torque, and dotted line indicates distribution of torque stream.When the vehicle is turning, drive shaft 1
Driving torque is normally inputted with driving motor 11.If the first output shaft 24 is curve inner side semiaxis when vehicle is turned to the left,
Second output shaft 14 is semiaxis on the outside of bend, and driving torque passes to first planetary gear 28 and the second planet by differential carrier 8
On gear 16, first planetary gear 28 and the second planetary gear 16 not only do revolution and do rotation (reality in sense of rotation such as Fig. 4 at this time
Line arrow), relative motion, and 19 revolving speed of the first sun gear are generated between the first sun gear 19 and secondary sun wheel 18
Slowly, 18 revolving speed of secondary sun wheel is fast, therefore 24 revolving speed of the first output shaft is slow, and 14 revolving speed of the second output shaft is fast, to realize
The distribution of speed.But driving torque is mean allocation between the first output shaft 24 and the second output shaft 14, it is assumed that drive shaft 1
The sum of driving torque inputted with driving motor 11 is T, then driving torque suffered by the first output shaft 24 and the second output shaft 14
It is all T/2.In order to allow torque suffered by semiaxis on the outside of bend to be greater than torque suffered by curve inner side semiaxis, the traveling of vehicle is improved
Mobility, the distribution motor 20 of torque at this time receive the signal from electronic control unit ECU, export to torque distribution rotor 21
Additional distribution of torque △ T, which distributes rotor 21 by torque, third hand tap gear 25 passes to 26 and of first bevel gear
In second bevel gear 15, then distribution of torque suffered by first bevel gear 26 and second bevel gear 15 is all △ T/2, it is equal in magnitude but
It is contrary.The distribution of torque that two sizes are △ T/2 passes through first planetary gear 28 respectively and the second planetary gear 16 passes to
On first sun gear 19 and secondary sun wheel 18, then the first sun gear 19 is subject at this time resultant torque are as follows:
The resultant torque that secondary sun wheel 18 is subject to are as follows:
Since the first output shaft 24 and the first sun gear 19 are connected, the second output shaft 14 and secondary sun wheel 18 are solid
Connect, therefore the torque of the first output shaft 24 output are as follows:
The torque of second output shaft 14 output are as follows:
So TO1< TO2, so that the torque for realizing axle on the outside of bend is greater than the torque of curve inner side axle, that is,
Realize the fixed direction allocation of torque.
As shown in figure 5, the first output shaft 24 is semiaxis on the outside of bend when vehicle is turned right, the second output shaft 14 is bend
Inside semiaxis.At this time distribution motor output torque and left-hand rotation when on the contrary, still use above-mentioned analysis method it can be concluded that, at this time
The torque of first output shaft 24 output are as follows:
The torque of second output shaft 14 output are as follows:
So TO1> TO2, so that the torque for realizing axle on the outside of bend is greater than the torque of curve inner side axle, that is,
Realize the fixed direction allocation of torque.
As shown in fig. 6, this is the control principle drawing equipped with this driving bridge vehicle.According to vehicle under different operating conditions needed for
Power PIt needsAnd the current electric quantity SOC of battery, electronic control unit ECU issue instruction, select the dynamic mode of vehicle, EV indicates electric power
Driving, HEV indicate electric power and fuel combination drive.On the other hand, according to the corner of speed and steering wheel, ECU adjusts distribution electricity
Machine output torque size, to be oriented distribution to the torque on output shaft, with improve the safety under vehicle turning operating condition,
Stability and mobility.Each component collective effect of drive axle realizes safety traffic of the vehicle under different motion state.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. a kind of double-motor hybrid drive axle, which is characterized in that including main reducing gear, differential mechanism, power-driven gear and
Semiaxis, the main reducing gear include drive shaft (1), taper driving gear (5) and bevel ring gear (6), the end of the drive shaft (1)
End is connected with taper driving gear (5), and taper driving gear (5) is engaged with bevel ring gear (6)；The differential mechanism includes differential mechanism
Shell (8), planetary gear, sun gear, bevel gear and torque distribute motor, and differential carrier (8) and bevel ring gear (6) are connected, poor
By bearing fit planetary gear on fast device shell (8), planetary gear is engaged with sun gear, and sun gear is nested on semiaxis,
First bevel gear (26), second bevel gear (15), first bevel gear (26), the second cone tooth are nested on planetary gear outrigger shaft
The side of wheel (15) is engaged with third hand tap gear (25), and third hand tap gear (25) is nested in torque distribution rotor (21)
One end, torque distribution rotor (21) are nested in differential carrier (8) periphery, and torque distributes rotor (21) and torque
Distribution motor (20) passes through magnetic field interaction；The power-driven gear includes driving motor (11) and driving motor rotor
(13), driving motor rotor (13) is nested in the second output shaft (14) periphery, and driving motor rotor (13) one end and differential mechanism
The fastening of shell (8) end face, driving motor rotor (13) and driving motor (11) pass through magnetic field interaction.
2. double-motor hybrid drive axle according to claim 1, which is characterized in that first output shaft (24) and
Second output shaft (14) constitutes semiaxis.
3. double-motor hybrid drive axle according to claim 1, which is characterized in that the planetary gear includes first
Planetary gear (28) and the second planetary gear (16).
4. double-motor hybrid drive axle according to claim 1, which is characterized in that the sun gear includes first
Sun gear (19) and secondary sun wheel (18).
5. double-motor hybrid drive axle according to claim 1, which is characterized in that the drive axle further includes axle housing
(3), the drive shaft (1) also with the bearing fit that is fixed on axle housing (3) inner upper end.
6. double-motor hybrid drive axle according to claim 1 or 5, which is characterized in that the differential carrier (8)
Both ends and the bearing fit for being fixed on the internal both ends of axle housing (3).
7. a kind of control method of double-motor hybrid drive axle described in -6 according to claim 1, which is characterized in that the control
Method processed is suitable for vehicle along straight-line travelling or Ackermann steer angle, and electronic control unit ECU is current according to vehicle demand power and battery
Electricity makes the selection of drive mode between two kinds of power of fuel and electric power；Electronic control unit ECU turns according to speed and steering wheel
Angle, the size of control distribution motor output torque, to realize that left and right wheels driving moment of the vehicle under turning condition is differential
Distribution.
8. the control method of double-motor hybrid drive axle according to claim 7, which is characterized in that the driving mould
Formula include be driven by electricity, fuel driven and electric power and fuel combination drive, generate four kinds of operational modes: charge operation, electric power
Operation, boosting operation and normal operation.
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| CN201811432378.3A CN109606023A (en) | 2018-11-28 | 2018-11-28 | A kind of double-motor hybrid drive axle and its control method |
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| CN201811432378.3A CN109606023A (en) | 2018-11-28 | 2018-11-28 | A kind of double-motor hybrid drive axle and its control method |
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| CN110091710A (en) * | 2019-05-21 | 2019-08-06 | 苏伟 | A kind of retarder of new-energy automobile |
| CN110281698A (en) * | 2019-06-18 | 2019-09-27 | 一汽解放汽车有限公司 | A kind of driving axis |
| CN110466350A (en) * | 2019-08-30 | 2019-11-19 | 安新兵 | A kind of drive mechanism and the transmission system using the drive mechanism |
| CN110496016A (en) * | 2019-08-21 | 2019-11-26 | 浙江大学宁波理工学院 | A kind of auxiliary walking device |
| CN111284333A (en) * | 2020-02-11 | 2020-06-16 | 江苏大学 | Automatic driving vehicle and high-efficiency double-motor driving steering coupling system and control method thereof |
| CN113022227A (en) * | 2021-04-27 | 2021-06-25 | 吉林大学 | Multi-mode double-motor coupling electric drive axle |
| CN113103826A (en) * | 2021-05-12 | 2021-07-13 | 吉林大学 | Torque directional distribution electric drive axle adopting double-planet-wheel cylindrical gear differential mechanism |
| CN113978243A (en) * | 2021-11-11 | 2022-01-28 | 北京吉利学院 | Multifunctional drive axle of car |
| CN114719004A (en) * | 2022-05-18 | 2022-07-08 | 清驰汽车(北京)有限公司 | Differential device and dual-drive power device |
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