CN107985067A - A kind of automatic electric drive axle of vehicle - Google Patents
A kind of automatic electric drive axle of vehicle Download PDFInfo
- Publication number
- CN107985067A CN107985067A CN201711168545.3A CN201711168545A CN107985067A CN 107985067 A CN107985067 A CN 107985067A CN 201711168545 A CN201711168545 A CN 201711168545A CN 107985067 A CN107985067 A CN 107985067A
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- Prior art keywords
- vehicle
- drive axle
- electric drive
- automatic electric
- driving
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G3/00—Resilient suspensions for a single wheel
- B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
- B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/14—Independent suspensions with lateral arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/40—Indexing codes relating to the wheels in the suspensions
- B60G2200/422—Driving wheels or live axles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention provides a kind of automatic electric drive axle of vehicle, it is related to a kind of bridge.The automatic electric drive axle includes：Hydraulic torque converter, for transmitting and changing the output speed and output torque of the driving motor, the hydraulic torque converter is connected with the driving motor；Planetary transmission, for transmitting and expanding the slewing range of the hydraulic torque converter, the hydraulic torque converter is connected with the planetary transmission, and the planetary transmission is connected by constant-velocity transmission shaft with the driving wheel of the vehicle, to drive the vehicle to travel；And control unit, the load that the different depth of the accelerator pedal of the vehicle, the current vehicle speed of the vehicle and the driving motor are trampled based on driver are known the shifting needs of the vehicle, control the planetary transmission to carry out phase judgement of speed change.The power change values of motor during reducing vehicle operation as far as possible, and extend motor close to the time of optimum efficiency curve.
Description
Technical field
The present invention relates to a kind of vehicle bridge, more particularly to a kind of automatic electric drive axle of vehicle.
Background technology
In recent years, since country vigorously supports, new energy power commercial car is just fast-developing, wherein pure electric vehicle commercial car by
Gradually in maturation.The driving of pure electric vehicle commercial car and driving form become major main engine plants and the innovation of parts manufacturer is burnt
Point.
At present, pure electric vehicle commercial car or mixed powered car field, the arrangement form of transmission system have two major classes；It is a kind of
Using traditional modified form drive axle, its arrangement form is sequentially motor, transmission shaft and drive axle or motor, gearbox, transmission
Axis and drive axle.Power is spread out of from motor, by gearbox, is transferred to driving bridge main reducing by transmission shaft, is finally transferred to driving
Wheel.The drawback is that the power change values of motor are larger when vehicle is run, motor cannot rest on highly efficient power position for a long time
Put, motor working efficiency is low, influences cruising ability, and Motor torque change space is small, and vehicle is difficult to adapt to high torque operating mode, system
It is big to take arrangement space；Parts are more, and weight is big；Power transmission chain length, efficiency are low；It is main to subtract that the service life is low, and opposing torque capacity is small.
The another kind of Integral electric drive axle being integrated in using electric system on drive axle.Power is by the electricity on electric drive axle
Machine is transferred directly to retarder, then is transferred to driving wheel.The drawback is that the power change values of motor are larger when vehicle is run, electricity
Machine cannot rest on highly efficient power position for a long time, and motor working efficiency is low, influence cruising ability, and unsprung mass is significantly increased,
It is unfavorable for vehicle bridge service life and cruising ability, and influences vehicle ride comfort；Motor working environment is severe, influences service life.
The content of the invention
It is an object of the present invention to provide a kind of automatic electric drive axle of vehicle, when being run with reducing vehicle as far as possible
The power change values of motor, and extend motor close to the time of optimum efficiency curve.
The present invention one is further objective is that the work efficiency of motor will be improved, to strengthen the continuation of the journey energy of vehicle as far as possible
Power.
The present invention another further objective is that to shorten the transmission chain length of motor as far as possible, to improve transmission efficiency
And the economy of new energy commercial car.
Especially, the present invention provides a kind of automatic electric drive axle of vehicle, the vehicle is by driving motor driving row
Sail, including：
Hydraulic torque converter, for transmitting and changing the output speed and output torque of the driving motor, the fluid power becomes
Device is turned round to be connected with the driving motor；
Planetary transmission, for transmitting and expanding the slewing range of the hydraulic torque converter, and according to the vehicle
Shifting needs carry out phase judgement of speed change, the hydraulic torque converter is connected with the planetary transmission, the planetary gear change
Fast device is connected by constant-velocity transmission shaft with the driving wheel of the vehicle, to drive the vehicle to travel；And
Control unit, the different depth of the accelerator pedal of the vehicle or/and different dynamics, described is trampled based on driver
The shifting needs of the vehicle are known in the load of the current vehicle speed of vehicle and the driving motor, control the planetary gear to become
Fast device carries out phase judgement of speed change or/and the driving motor changes corresponding power output.
Further, the automatic electric drive axle is used for the vehicle with rigid axle suspension.
Further, the rigid axle suspension includes：
The stiff shaft being connected with two driving wheels,
The automatic electric drive axle is sequentially connected with two driving wheels respectively by two constant-velocity transmission shafts,
The automatic electric drive axle is held at the vehicle frame or subframe of the vehicle as sprung mass,
The vehicle frame or/and subframe of the vehicle are opposite with the stiff shaft at the same time by corresponding air bag and damper
Both ends buffering connection；
Preferably, the stiff shaft is as drive axle or steering and driving axle.
Further, the automatic electric drive axle is used for the vehicle with independent suspension.
Further, the vehicle has independent suspension, and the independent suspension includes：
Two double beam structures, each double beam structures are corresponding with a driving wheel, double crossbeam knots
Structure is connected by knuckle with the driving wheel, and double beam structures have in the vertical upper beam mutually in spacing and lower horizontal stroke
Beam, the upper beam and the bottom end rail are hinged in alphabetical V-arrangement, its openend and the vehicle frame or/and subframe of the vehicle,
Its bending end is hinged with the knuckle；The constant-velocity transmission shaft is as in the spacing of double beam structures；
The vehicle frame or/and subframe of the vehicle are connected by corresponding air bag and damper with knuckle buffering；
The automatic electric drive axle is held at the vehicle frame or subframe of the vehicle as sprung mass.
Further, the automatic electric drive axle also has multiple electronic driving lever positions, corresponds to the P of the vehicle respectively
Gear, R gears, N gears and D gears, so that driver performs the behaviour kept off to P gears, R gears, N gears and D by touching corresponding automatically controlled button
Make.
Further, the planetary transmission has
Multiple planetary gear sets or/and differential gear assembly for being sequentially connected in series setting；And
Hydraulic control mechanism, is mutually strained for manipulating the planetary gear set or/and the differential gear assembly
Speed, control of the hydraulic control mechanism in response to described control unit.
Further, driving motor, hydraulic torque converter and the planetary transmission are sequentially coaxially arranged in series,
The automatic electric drive axle also has a box of tricks, the planetary transmission be engaged by a pair of of gear and
The box of tricks is sequentially connected；
The box of tricks is connected by two constant-velocity transmission shafts with corresponding driving wheel.
Further, described control unit is the ECU of the vehicle, while is based on the travel condition of vehicle information, obtains
Know the shifting needs of the vehicle, control the planetary transmission to carry out phase judgement of speed change；
Wherein, the travel condition of vehicle information includes at least current traffic information.
The inventors of the present application found that when vehicle is run motor power change values increase, and motor is close to best effective
The main reason for time of rate curve shortens is that driving motor is long to the driving-chain between driving wheel, causes the synthesis of vehicle
Performance, such as the operational efficiency of its volume, weight, especially unsprung mass and each executing agency are all significantly reduced or contracted
It is short.
For this, on the one hand, present inventor's creativeness makes driving motor only by hydraulic torque converter, planet tooth
Wheel speed and constant-velocity transmission shaft are transferred at driving wheel, relative to the prior art, are significantly shortened from driving motor to drive
Driving-chain between driving wheel.On the other hand, control unit trampled by driver the accelerator pedal of vehicle different depth or/and
Different dynamics judge the driving intention of driver, and combine the current vehicle speed of the vehicle obtained at the same time, drive the load of motor with
And travel condition of vehicle information, comprehensive analysis vehicle and the operation conditions for driving motor, and optimal vehicle speed variation is made accordingly
Demand, and driving motor and planetary transmission can be controlled to carry out accordingly linkage or any single movement in them at the same time,
To reach the work efficiency for improving driving motor, while the runnability of vehicle is improved again, so as to make full use of battery to make it
It is optimal course continuation mileage.
To sum up, the automatic electric drive axle is while vehicle overall performance is improved, motor when reducing vehicle operation as far as possible
Power change values, and extend motor close to the time of optimum efficiency curve.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of detailed description of the present invention by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic logic diagram of the course of work of automatic electric drive axle according to the present invention；
Fig. 2 is that the automatic electric drive axle of the present invention is installed on the schematic elevational view of rigid axle suspension；
Fig. 3 is the schematic plan that automatic electric drive axle shown in Fig. 2 is installed on rigid axle suspension；
Fig. 4 is that the automatic electric drive axle of the present invention is installed on the schematic elevational view of independent suspension；
Fig. 5 is the schematic plan that automatic electric drive axle shown in Fig. 4 is installed on rigid axle suspension；
Fig. 6 be for show the present invention automatic electric drive axle inside arrangement and will driving motor, hydraulic torque converter,
Planetary transmission, box of tricks and a pair of of gear are arranged at schematic plan in babinet.
Each symbolic indication implication is as follows in figure：
1 hydraulic torque converter；
11 stiff shafts, 12 vehicle frames or/and subframe, 13 air bags, 14 dampers, 16 knuckles；
15 pairs of beam structures, 151 upper beams, 152 bottom end rails；
2 driving motors, 4 control units, 5 constant-velocity transmission shafts, 6 boxs of tricks, 7 driving wheels；
3 planetary transmissions, 31 planetary gear sets or/and differential gear assembly, 32 hydraulic control mechanisms.
Embodiment
Fig. 1 is the schematic logic diagram of the course of work of automatic electric drive axle according to the present invention；Referring to Fig. 1, the present invention
A kind of automatic electric drive axle of vehicle is provided, the vehicle is by driving the driving traveling of motor 2.The automatic electric drive axle includes：
Hydraulic torque converter 1, planetary transmission 3 and control unit 4.
Hydraulic torque converter 1 be used for transmit and change driving motor 2 output speed and output torque, hydraulic torque converter 1 with
Driving motor 2 connects.It will be appreciated by persons skilled in the art that hydraulic torque converter 1 can be by pump impeller, turbine and guide wheel etc.
Component forms.Pump impeller and turbine are a pair of of work combinations, and pump impeller drives turbine to rotate by liquid, and between pump impeller and turbine
Guide wheel makes to realize speed discrepancy between pump impeller and turbine and realizes variable-speed torque-converting function by reaction force.That is, fluid power becomes
The directly controlling from any device and unit of device 1 is turned round, is a kind of passive variable-speed torque-converting device.
Planetary transmission 3 is used to transmit and expand the slewing range of hydraulic torque converter 1, and according to the speed change need of vehicle
Ask and carry out phase judgement of speed change.Hydraulic torque converter 1 is connected with planetary transmission 3.Planetary transmission 3 passes through constant-velocity transmission shaft
5 (referring to Fig. 2) are connected with the driving wheel 7 of vehicle, to drive vehicle to travel.
In the case of attached drawing is unshowned, specifically, planetary transmission 3 (referring to Fig. 1) can have it is multiple successively
The planetary gear set or/and differential gear assembly 31 (referring to Fig. 1) and hydraulic control mechanism 32 being arranged in series are (referring to figure
1).Hydraulic control mechanism 32 is used to manipulate planetary gear set or/and differential gear assembly 31 carries out phase judgement of speed change.Hydraulic operation
Control of the mechanism 32 in response to control unit 4 (referring to Fig. 1).Since 1 automatic speed-changing and torque-converting of hydraulic torque converter is limited in scope,
A few rows of planetary gear assemblies or/and differential gear assembly 31 connect again behind turbine so as to expand variable-speed torque-converting scope.Ability
Field technique personnel are it is understood that planetary gear set includes sun gear, planet pinion and gear ring；Differential gear assembly
And in this way, but differential gear assembly than planetary gear set the free degree more than one.
Fig. 6 be for show the present invention automatic electric drive axle inside arrangement and will driving motor, hydraulic torque converter,
Planetary transmission, box of tricks and a pair of of gear are arranged at schematic plan in babinet.Referring to Fig. 6, specifically, driving
Motor 2, hydraulic torque converter 1 and planetary transmission 3 are sequentially coaxially arranged in series.Automatic electric drive axle also has box of tricks
6, planetary transmission 3 is engaged by a pair of of gear 7 and is sequentially connected with box of tricks.Box of tricks is passed by two constant speed
Moving axis 5 is connected with corresponding driving wheel 7.So that while disclosure satisfy that transmission needs, volume is reduced.It can will drive motor
2nd, hydraulic torque converter 1, planetary transmission 3, box of tricks 6 and a pair of of gear 7 are arranged in babinet 10, and form module list
Member, in order to illustrate and assemble.
Referring to Fig. 1, control unit 4 trampled based on driver the accelerator pedal of vehicle different depth or/and different dynamics,
The shifting needs of vehicle are known in the current vehicle speed of vehicle and the load of driving motor 2, and control planetary transmission 3 carries out phase
Judgement of speed change or/and the driving motor 2 change corresponding power output.
Wherein, control unit 4 can be the ECU of vehicle, while be based on travel condition of vehicle information, know the speed change of vehicle
Demand, control planetary transmission 3 carry out phase judgement of speed change；Wherein, travel condition of vehicle information include at least current vehicle speed and
Power pedal information, it is, of course, also possible to including other information, such as judges that vehicle is climbing or just in descending, making control
Unit 4 at the same time based on these travel condition of vehicle information and driver trample vehicle accelerator pedal different depth or/and
The shifting needs of vehicle are more accurately known in the load of different dynamics, the current vehicle speed of vehicle and driving motor 2.
For example, control unit 4 knows that vehicle is in climbing state, speed is relatively low at this time, power demand is strong, increases driving
2 load of motor；Accelerator pedal is trampled least significant end by driver.Then control unit 4 can be by increasing driving motor 2 at the same time
Output power, and planetary transmission 3 is adjusted to middling speed or low-speed heave-load stage, so that vehicle is rapidly completed climbing.
The driving speed-change process of the automatic electric drive axle can be, first by control unit 4 by detecting device accordingly
Obtain current vehicle speed, the load for driving motor 2 and the travel condition of vehicle information of vehicle.Only need to be according to it during driver's speed change
The corresponding different depth of shifting needs bend the throttle or/and different dynamics.Without manipulating corresponding gear level, so that pole
Big is easy to gearshift driver behavior.At this moment, control unit 4 is based on above- mentioned information, that is, the current vehicle speed of vehicle, driving motor
The different depth or/and different dynamics and travel condition of vehicle information of the accelerator pedal of vehicle are trampled in 2 load, driver；
Then the planetary transmission 3 or/and the driving motor 2 is controlled to carry out corresponding variable speed variable twisting moment output.Finally, only
Only it is connected by constant-velocity transmission shaft 5 with the driving wheel 7 of vehicle, so as to drive vehicle to travel.
The inventors of the present application found that when vehicle is run motor power change values increase, and motor is close to best effective
The main reason for time of rate curve shortens is that the driving-chain that driving motor 2 is arrived between driving wheel 7 is long, causes the comprehensive of vehicle
Close performance, such as the operational efficiency of its volume, weight, especially unsprung mass and each executing agency all significantly reduce or
Shorten.
For this, on the one hand, present inventor's creativeness makes driving motor 2 only by hydraulic torque converter 1, planet
Gear-shift mechanism 3 and constant-velocity transmission shaft 5 are transferred at driving wheel 7, relative to the prior art, are significantly shortened from driving motor
2 arrive the driving-chain between driving wheel 7.On the other hand, control unit 4 tramples the difference of the accelerator pedal of vehicle by driver deeply
Degree or/and different dynamics judge the driving intention of driver, and combine the current vehicle speed of the vehicle obtained at the same time, driving motor 2
Load and travel condition of vehicle information, comprehensive analysis vehicle and the operation conditions for driving motor 2, and make accordingly optimal
Vehicle speed variation demand, and can control driving motor 2 at the same time and planetary transmission 3 accordingly linked or they in it is any
Single movement, to reach the work efficiency for improving driving motor 2, while improves the runnability of vehicle, so that fully profit again
Optimal course continuation mileage is reached with battery.
To sum up, the automatic electric drive axle is while vehicle overall performance is improved, motor when reducing vehicle operation as far as possible
Power change values, and extend motor close to the time of optimum efficiency curve.
Further, automatic electric drive axle can be used for the vehicle with rigid axle suspension, to extend its scope of application.
Fig. 2 is that the automatic electric drive axle of the present invention is installed on the schematic elevational view of rigid axle suspension；Fig. 3 is shown in Fig. 2
Automatic electric drive axle be installed on the schematic plan of rigid axle suspension；Referring also to Fig. 2 and Fig. 3, and carried out based on Fig. 2
Illustrate, alternatively, rigid axle suspension includes the stiff shaft 11 being connected with two driving wheels 7.
Automatic electric drive axle is sequentially connected with two driving wheels 7 respectively by two constant-velocity transmission shafts 5,
Automatic electric drive axle is held at the vehicle frame or subframe 12 of vehicle as sprung mass,
The vehicle frame or/and subframe 12 of vehicle are opposite with stiff shaft 11 at the same time by corresponding air bag 13 and damper 14
Both ends buffering connection；To bear the output loads of vehicle.
Preferably, stiff shaft 11 is used as drive axle or steering and driving axle, that is, wheel end to install 16 mechanism of knuckle additional.
By above-mentioned setting, reduce vehicle unsprung mass, improve vehicle ride comfort and mobility, improve in continuation of the journey
Journey.Reduce arrangement space compared with traditional electric car, reduce weight, shorten driving-chain, improve transmission efficiency.
Further, automatic electric drive axle is used for the vehicle with independent suspension.To extend its scope of application.
Fig. 4 is that the automatic electric drive axle of the present invention is installed on the schematic elevational view of independent suspension；Fig. 5 is shown in Fig. 4
Automatic electric drive axle is installed on the schematic plan of rigid axle suspension.Referring also to Fig. 4 and Fig. 5, and said based on Fig. 4
Bright, alternatively, vehicle has independent suspension, and independent suspension includes two double beam structures 15.Two double beam structures 15, each
Double beam structures 15 are corresponding with a driving wheel 7, and double beam structures 15 are connected by knuckle 16 with driving wheel 7, double crossbeams
Structure 15 has vertical mutually in the upper beam 151 and bottom end rail 152 of spacing, and upper beam 151 and bottom end rail 152 are in letter
V-arrangement, the vehicle frame or/and subframe 12 of its openend and vehicle is hinged, its bending end is hinged with knuckle 16；Constant-velocity transmission shaft 5
As in the spacing of double beam structures 15.The vehicle frame or/and subframe 12 of vehicle by corresponding air bag 13 and damper 14 with
The buffering connection of knuckle 16, two double beam structures 15.
Automatic electric drive axle is held at the vehicle frame or subframe 12 of vehicle as sprung mass.
In the case of attached drawing is unshowned, further, automatic electric drive axle also has multiple electronic driving lever positions, respectively
P gears, R gears, N gears and the D gears of corresponding vehicle, so that driver is performed to P gears, R gears, N by touching corresponding automatically controlled button
The operation of gear and D gears.To meet various functions that vehicle uses.Wherein, it will be appreciated by persons skilled in the art that P gears, R
Gear, N gears and D gears correspond to park position, reverse gear, neutral gear and the drive shift of vehicle respectively.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, without departing from the spirit and scope of the present invention, still can according to the present invention disclosure it is direct
Determine or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (9)
1. a kind of automatic electric drive axle of vehicle, the vehicle is travelled by driving motor to drive, including：
Hydraulic torque converter, for transmitting and changing the output speed and output torque of the driving motor, the hydraulic torque converter
It is connected with the driving motor；
Planetary transmission, for transmitting and expanding the slewing range of the hydraulic torque converter, and according to the change of the vehicle
Fast demand carries out phase judgement of speed change, and the hydraulic torque converter is connected with the planetary transmission, the planetary transmission
It is connected by constant-velocity transmission shaft with the driving wheel of the vehicle, to drive the vehicle to travel；And
Control unit, the different depth or/and different dynamics, the vehicle of the accelerator pedal of the vehicle are trampled based on driver
Current vehicle speed and the load of the driving motor know the shifting needs of the vehicle, control the planetary transmission
Carry out phase judgement of speed change or/and the driving motor changes corresponding power output.
2. automatic electric drive axle according to claim 1, it is characterised in that the automatic electric drive axle is used to have non-only
The vehicle of vertical suspension.
3. automatic electric drive axle according to claim 2, it is characterised in that the rigid axle suspension includes：
The stiff shaft being connected with two driving wheels,
The automatic electric drive axle is sequentially connected with two driving wheels respectively by two constant-velocity transmission shafts,
The automatic electric drive axle is held at the vehicle frame or subframe of the vehicle as sprung mass,
The vehicle frame or/and subframe of the vehicle pass through corresponding air bag and damper while the opposite end with the stiff shaft
Buffering connection；
Preferably, the stiff shaft is as drive axle or steering and driving axle.
4. automatic electric drive axle according to claim 1, it is characterised in that the automatic electric drive axle is used to have independent
The vehicle of suspension.
5. automatic electric drive axle according to claim 4, it is characterised in that the vehicle has independent suspension, described only
Vertical suspension includes：
Two double beam structures, each double beam structures are corresponding with a driving wheel, and double beam structures lead to
Knuckle to be crossed to be connected with the driving wheel, double beam structures have in vertical mutual upper beam and bottom end rail in spacing,
The upper beam and the bottom end rail are hinged in alphabetical V-arrangement, its openend and the vehicle frame or/and subframe of the vehicle, its
Bending end is hinged with the knuckle；The constant-velocity transmission shaft is as in the spacing of double beam structures；
The vehicle frame or/and subframe of the vehicle are connected by corresponding air bag and damper with knuckle buffering；
The automatic electric drive axle is held at the vehicle frame or subframe of the vehicle as sprung mass.
6. the automatic electric drive axle according to claim 3 or 5, it is characterised in that the automatic electric drive axle also has more
A electronic driving lever position, corresponds to P gears, R gears, N gears and the D gears of the vehicle, so that driver is corresponding by touching respectively
Automatically controlled button performs the operation to P gears, R gears, N gears and D gears.
7. automatic electric drive axle according to claim 6, it is characterised in that the planetary transmission has：
Multiple planetary gear sets or/and differential gear assembly for being sequentially connected in series setting；And
Hydraulic control mechanism, phase judgement of speed change, institute are carried out for manipulating the planetary gear set or/and the differential gear assembly
State control of the hydraulic control mechanism in response to described control unit.
8. automatic electric drive axle according to claim 7, it is characterised in that driving motor, hydraulic torque converter and the institute
Planetary transmission is stated sequentially coaxially to be arranged in series,
The automatic electric drive axle also has a box of tricks, the planetary transmission by a pair of of gear be engaged with it is described
Box of tricks is sequentially connected；
The box of tricks is connected by two constant-velocity transmission shafts with corresponding driving wheel.
9. automatic electric drive axle according to claim 8, it is characterised in that described control unit is the ECU of the vehicle,
At the same time be based on the travel condition of vehicle information, know the shifting needs of the vehicle, control the planetary transmission into
Row phase judgement of speed change；
Wherein, the travel condition of vehicle information includes at least current traffic information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711168545.3A CN107985067A (en) | 2017-11-21 | 2017-11-21 | A kind of automatic electric drive axle of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711168545.3A CN107985067A (en) | 2017-11-21 | 2017-11-21 | A kind of automatic electric drive axle of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107985067A true CN107985067A (en) | 2018-05-04 |
Family
ID=62032436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711168545.3A Pending CN107985067A (en) | 2017-11-21 | 2017-11-21 | A kind of automatic electric drive axle of vehicle |
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Application publication date: 20180504 |
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