CN206141296U - Vehicle drive -by -wire actuating mechanism , transaxle and electric automobile - Google Patents
Vehicle drive -by -wire actuating mechanism , transaxle and electric automobile Download PDFInfo
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- CN206141296U CN206141296U CN201621117003.4U CN201621117003U CN206141296U CN 206141296 U CN206141296 U CN 206141296U CN 201621117003 U CN201621117003 U CN 201621117003U CN 206141296 U CN206141296 U CN 206141296U
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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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Abstract
The utility model relates to a vehicle drive -by -wire actuating mechanism, transaxle and electric automobile. Wherein, vehicle drive -by -wire actuating mechanism is including the motor that has first output shaft and second output shaft, an epicyclie gear, the 2nd epicyclie gear and differential mechanism, an epicyclie gear has the first input end that links to each other with first output shaft transmission, and be used for the first output that links to each other with the first semi -axis transmission of axle one side, the 2nd epicyclie gear has the second input that links to each other with the second output shaft transmission, and be used for the third output that links to each other with the second semi -axis transmission of axle opposite side, an epicyclie gear's second output and the 2nd epicyclie gear's fourth output transmission are respectively connected in differential mechanism's both sides and be connected with first stopper between the differential mechanism, be connected with the second stopper between fourth output and the differential mechanism. Through above -mentioned technical scheme, this actuating mechanism of openly providing can stabilize and realize the control to the torque output of both sides wheel in a flexible way.
Description
Technical field
It relates to the drive-by-wire field of vehicle, in particular it relates to a kind of vehicle line traffic control drive mechanism, using the machine
The drive axle of structure and the electric automobile using the drive axle.
Background technology
Drive-by-wire mode is increasingly used in Vehicle Engineering, especially with the rise of electric automobile, the line
Control type of drive is also more and more important for the improvement of the performance of electric automobile.Wherein, as drilling from aircraft handling control
The drive-by-wire technology changed and come, is the driving intention using sensor senses driver, and is passed through during wire is conveyed to
Central processor, central processing unit retransmit the associative operation that instruction completes driver to corresponding actuator.Wherein, adopting should
Drive-by-wire mode, can reduce the complexity of part, mitigate quality, reduce oil consumption and manufacturing cost, and also accordingly improve can
By property and safety.Drive-by-wire mode at this stage for the bad control of torque output of the both sides wheel of same drive axle,
Cause vehicle performance not high.
Utility model content
The purpose of the disclosure is to provide a kind of drive-by-wire mechanism, using the vehicle line traffic control drive mechanism drive axle and make
With the electric automobile of the drive axle, the vehicle line traffic control drive mechanism stably and neatly can be realized defeated to the moment of torsion of both sides wheel
The control for going out.
To achieve these goals, the disclosure provides a kind of vehicle line traffic control drive mechanism, wherein, the vehicle line traffic control driving machine
Structure includes the motor with the first output shaft and the second output shaft, first planet gear train, the second epicyclic train and differential mechanism,
The first planet gear train with first output shaft first input end that is connected of transmission, and for vehicle bridge side
The first semiaxis transmission be connected the first outfan, second epicyclic train with second output shaft transmission be connected
The second input, and for the second semiaxis the 3rd outfan that is connected of transmission with vehicle bridge opposite side, the first planet
Gear train also has the second outfan, and second epicyclic train also has the 4th outfan, second outfan and institute
State the 4th outfan to be connected in the both sides of the differential mechanism and between second outfan and the differential mechanism respectively
The first brake is connected with, between the 4th outfan and the differential mechanism, second brake is connected with.
Alternatively, the first planet gear train includes the first gear ring, the first row star-wheel, the first row carrier, first sun
Wheel, second epicyclic train include the second gear ring, the second planetary gear, the second planet carrier and the second sun gear, described first
Planetary gear is engaged between first gear ring and first sun gear, and second planetary gear is engaged on second gear ring
And second sun gear between, the first row carrier supports the first row star-wheel, second planet carrier to support described
Second planetary gear, first gear ring are driven with first output shaft and are connected together to the first input end, and described second
Gear ring is connected together to second input, the first row carrier and first sun with second output shaft transmission
One of wheel for being connected together to first outfan with first semiaxis transmission, brake by another one and described first
Device is connected together to second outfan, and one of second planet carrier and second sun gear are for described
The transmission of two semiaxis is connected together to the 3rd outfan, and it is defeated that another one is connected together to the described 4th with the second brake
Go out end.
Alternatively, the center of the first row carrier has the first drive shaft to form first outfan, and this first
Drive shaft is connected with first semiaxis transmission, and the center of second planet carrier has the second drive shaft to form the described 3rd
Outfan, second drive shaft are connected with second semiaxis transmission.
Alternatively, first sun gear and first brake is connected together to second outfan, and described
Two sun gears are connected together to the 4th outfan with second brake.
Alternatively, between first gear ring and first output shaft, second gear ring and second output shaft
Between by gear drive connect.
Alternatively, the first planet train is identical with second planet circular system and symmetrically sets with regard to the differential mechanism
Put, first brake is identical with the second brake and is symmetrical arranged with regard to the differential mechanism.
On the basis of above-mentioned technical proposal, the disclosure also provides a kind of drive axle, including for being connected with the first wheel
The first semiaxis and with the second semiaxis for being connected with the second wheel, wherein, also including the disclosure provide vehicle line traffic control drive
Motivation structure.
Alternatively, first outfan is connected by first shaft coupling transmission with first semiaxis, and the described 3rd is defeated
Go out end to be connected by second shaft coupling transmission with second semiaxis.
On the basis of above-mentioned technical proposal, the disclosure also provides a kind of electric automobile, wherein, provide including the disclosure
Drive axle, and the first wheel being connected on first semiaxis and the second wheel being connected on second semiaxis.
Alternatively, the electric automobile also includes the first wheel speed of controller, wheel speed for detecting first wheel
Sensor and the second wheel speed sensors for detecting the wheel speed of second wheel, first wheel speed sensors and described
Second wheel speed sensors are electrically connected with the controller respectively, the controller respectively with the motor, the first brake and
Two brakes are electrically connected.
By above-mentioned technical proposal, the Motor torque of input stably can be exported by two outfans of epicyclic train
Both sides wheel is given, and respectively two outfans can be braked so as to flexibly realize to two by two electromagnetic brakes
The regulation of the torque output of side wheel.
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing further understanding of the disclosure, and to constitute the part of description, with following tool
Body embodiment is used for explaining the disclosure together, but does not constitute restriction of this disclosure.In the accompanying drawings：
Fig. 1 is the structure principle chart of the drive-by-wire mechanism that the exemplary first embodiment of the disclosure is provided；
Fig. 2 is the structure principle chart of the drive-by-wire mechanism that the exemplary second embodiment of the disclosure is provided；
Fig. 3 is the structure principle chart of the drive-by-wire mechanism that the 3rd exemplary embodiment of the disclosure is provided.
Specific embodiment
It is described in detail below in conjunction with accompanying drawing specific embodiment of this disclosure.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the disclosure, is not limited to the disclosure.
In the disclosure, in the case where contrary explanation is not made, the noun of locality for using such as " upper and lower, left and right " is typically referred to
Define on the basis of in terms of the drawing of respective drawings." inside and outside " refers to the inner and outer of corresponding component profile.
As shown in Figure 1 to Figure 3, the vehicle line traffic control drive mechanism that the disclosure is provided by schematic three kinds of embodiments,
Ensure that to both sides vehicle stabilization and flexible torque output, the performance such as handling of electric automobile can be effectively improved.
Similar structure, effect in wherein three kinds illustrative embodiments etc. in order to avoid repeat, what is had been described in before
In the case of, do not do and excessively repeat.
As shown in figure 1, in disclosed first embodiment, the vehicle line traffic control drive mechanism includes motor 101, planet tooth
Train 102 and electromagnetic brake 103, the input that epicyclic train 102 is connected with the output shaft transmission with motor 101, with
And the first outfan being connected is driven for the first semiaxis 111 with vehicle bridge side and for the second semiaxis with vehicle bridge opposite side
The second outfan that 112 transmissions are connected, the first outfan and the second outfan are connected with input transmission respectively, wherein electromagnetic system
Dynamic device 103 is included for braking the first electromagnetic brake 1031 of the first outfan, and for braking the of the second outfan
Two electromagnetic brakes 1032.
So, the gear ratio using planetary gear train is big, and the features such as noise is little, the vehicle line traffic control in present embodiment is driven
The Motor torque of input can stably be exported using two outfans of epicyclic train and give both sides wheel by motivation structure, and
Respectively two outfans can be braked by two electromagnetic brakes defeated to the moment of torsion of both sides wheel so as to flexibly realize
The regulation for going out.The error of multi-motor driving motor itself production can be eliminated in addition using single Motor drive so that torque output
It is more stable.The electromagnetic brake for wherein adopting can be quick on the draw in order to the independently-controlled, effectively according to current road conditions by right
The torque output changed to adjust both sides vehicle of the braking power of corresponding output end, lifts the handling of vehicle.
In the present embodiment, in order to realize an input, the structure of two outfans, epicyclic train 102 include
Gear ring 104, the first row star-wheel 105, the first row carrier 106, the first sun gear 107 and the second planetary gear 108, the second planet carrier
109 and second sun gear 110, the first row star-wheel 105 is engaged between gear ring 104 and the first sun gear 107, the second planetary gear
108 are engaged between gear ring and the second sun gear, and the first row carrier 108 supports the first row star-wheel 105, the second planet carrier 109
The second planetary gear 108 is supportted, gear ring 104 is connected together to input, the first row carrier and first with the output shaft transmission of motor 101
One of sun gear for being connected together to the first outfan with the transmission of the first semiaxis 111, another one and the first electromagnetic braking
Device 1031 is connected, and one of the second planet carrier and the second sun gear are connected together to second for being driven with the second semiaxis 112
Outfan, another one are connected with the second electromagnetic brake 1032.That is, epicyclic train 102 uses a gear ring 104 as input
End, and while there are two outfans.Wherein, one of planet carrier and sun gear are used to brake as outfan another one,
It is effectively utilized the construction featuress of epicyclic train.In other embodiments, outfan can also be used for simultaneously braking.Example
As exported using planet carrier and being braked simultaneously.
Specifically, in the present embodiment, the center of the first row carrier has the first drive shaft 113 to form the first output
End, first drive shaft are connected with the transmission of the first semiaxis 111, and the center of the second planet carrier has the second drive shaft 114 to be formed
Second outfan, second drive shaft are connected with the transmission of the second semiaxis 112.I.e. present embodiment is exported using planet carrier, output
Efficiency high.In addition, the first sun gear 107 is connected with the first electromagnetic brake 1031, the second sun gear 110 and the second electromagnetic braking
Device 1032 is connected, i.e., braked using sun gear, and braking effect is obvious.When needing to be braked a certain outfan, need to only lead to
Cross corresponding electromagnetic brake to be braked corresponding sun gear.
Wherein electromagnetic brake is known in the art part, is a kind of preferable automated execution element in modern industry,
The effect such as transmission power and control motion, with compact conformation, simple to operate, response spirit are acted primarily as in machine driven system
Quick, the life-span is permanent, using reliability, it is easy to accomplish the advantages of distant control.In the present embodiment, which can be installed to the sun
On the output shaft of wheel, produce after electric magnet therein is controlled obtains electric and output shaft on sun gear is braked.Work as sun gear
After being braked deceleration or stalling, force corresponding planetary gear to slow down or stall, now enable to defeated by the moment of torsion of planet carrier
Go out and weaken or stop, so as to play the control to corresponding side wheel.
In the present embodiment, in order to realize the transmission between gear ring 104 and motor 101, alternatively, gear ring 104 and electricity
The output shaft of machine 101 is connected by gear drive, such as by bonded gear on the output shaft of motor, the gear can and tooth
The outside tooth engagement of circle.So as to form the input of epicyclic train 102.In other embodiment, motor 101 and gear ring 104
Between can also be using the other modes such as Chain conveyer, V belt translation.
In the present embodiment, it is synchronized with the movement to ensure stablizing for both sides vehicle, the first row star-wheel 105 and the second planet
Take turns 108 identical, the first row carrier 106 is identical with the second planet carrier 109, and the first sun gear 107 is identical with the second sun gear 110,
First drive shaft 113 is identical with the second drive shaft 114.No matter the i.e. structure of each part of gear ring to two outfans, quantity, chi
Very little and assembling mode all same, so as to guarantee so that two outfans are not in the case where being braked, can be synchronous
Stable carries out torque output.
So, according to above-mentioned drive-by-wire mechanism, present embodiment also provides a kind of drive axle, and the drive axle includes using
In the first semiaxis 111 being connected with the first wheel 117 and with the second semiaxis 112, Yi Jiben for being connected with the second wheel 118
Vehicle line traffic control drive mechanism above-mentioned in embodiment.Wherein in order to lift the adaptability of both sides wheel, the first outfan and
One semiaxis can be connected by the transmission of first shaft coupling 115, and the second outfan and the second semiaxis can pass through second shaft coupling 116
Transmission is connected.Used as part known in this field, its universal joint shaft feature can cause two axles being connected in different line feelings to shaft coupling
Realize under condition that power is transmitted so that the better adaptability of wheel.
Further, the electric automobile for providing in present embodiment, including above-mentioned drive axle, and it is connected to the first half
The first wheel 117 and the second wheel 118 being connected on the second semiaxis 112 on axle 111.Additionally, in the present embodiment, such as
Shown in Fig. 1, electric automobile also include controller 119, for detect the first wheel wheel speed the first wheel speed sensors 120 and
For detecting the second wheel speed sensors 121 of the wheel speed of the second wheel, the first wheel speed sensors and the second wheel speed sensors difference
It is electrically connected with the controller, controller is electrically connected with motor and electromagnetic brake respectively.Wherein controller can be integrated in car load control
In device (VCU) processed or using independent controller such as microprogram control unit (MCU), so as to the wheel speed according to current left and right wheels
Motor 101 and two electromagnetic brakes are controlled respectively, the overall drive-by-wire to vehicle is realized.Wherein controller and sensor
And signal transmission can be realized by CAN between each controlled part.
Wherein adjusting the torque output to two wheels by wheel speed can be in vehicle travel process in two bus or train routes
Produce different braking moments, in real time the kinestate of amendment vehicle body, can realize preventing vehicle slip, prevent vehicle rollover,
Vehicle whipping etc. function is prevented, the intellectuality of electric automobile is greatly improved.Wherein specific control mode is by with reference to following
Second embodiment and the 3rd embodiment are illustrated together.
The above-mentioned first embodiment that the disclosure is described with reference to Fig. 1, introduces the second enforcement of the disclosure with reference to Fig. 2
Mode.
As shown in Fig. 2 the vehicle line traffic control drive mechanism that disclosure second embodiment is provided include the first motor 2011, the
Two motors 2012, first planet gear train 2021, the second epicyclic train 2022 and differential mechanism 222, first planet gear train
2021 with the output shaft first input ends that are connected of transmission with the first motor 2011, and for the first half with vehicle bridge side
The first outfan that the transmission of axle 211 is connected, the second epicyclic train 2022 is with the output shaft transmission phase with the second motor 2012
The second input even, and the 3rd outfan being connected for the transmission of the second semiaxis 212 with vehicle bridge opposite side, first planet
Gear train also has the second outfan, and the second epicyclic train also has the 4th outfan, the second outfan and the 4th outfan
It is connected in the both sides of differential mechanism respectively.
So, the drive-by-wire mechanism in second embodiment adopts Dual-motors Driving, so that driving energy foot, two
Individual epicyclic train can be respectively two motors and carry out intermediate transmission, big with gear range, the characteristics of noise is little.In addition
Due to being driven using independent two and drive mechanism, therefore it is connected between two epicyclic trains using differential mechanism, can be with
Prevent the rotating speed of left and right wheels both can be consistent so as to correct left and right driving motor from completely the same band in straight trip
The error come, can realize the difference in wheel of both sides wheel again when turning.Additionally by the independent control to two motors, can be with
Realize the control to left and right wheelses output torque.Differential mechanism wherein in present embodiment can be well known in the art common
The differential mechanism of differential mechanism, or band brake function.
In the present embodiment, as shown in Fig. 2 first planet gear train includes the first gear ring 2041, the first row star-wheel
205th, the first row carrier 206, the first sun gear 207, the second epicyclic train include the second gear ring 2042, the second planetary gear 208,
Second planet carrier 209 and the second sun gear 210, the first row star-wheel 105 are engaged between the first gear ring 2041 and the first sun gear,
Second planetary gear is engaged between the second gear ring 2042 and the second sun gear, and the first row carrier supports the first row star-wheel, the second row
Carrier supports the output shaft transmission of the second planetary gear, the first gear ring 2041 and the first motor 2011 to be connected together to the first input
End, one of the first row carrier 206 and the first sun gear 207 are defeated for being connected together to first with the transmission of the first semiaxis 210
Go out end, another one is connected together to the second outfan, in the second planet carrier 208 and the second sun gear 210 with differential mechanism 222
For being connected together to the 3rd outfan with the transmission of the second semiaxis 211, it is defeated that another one is connected together to the 4th with differential mechanism 222 to person
Go out end.That is, two epicyclic trains can be with relatively independent the transmission realized to two motors to two wheels.
In the present embodiment, as described in Figure 2, further, the center of the first row carrier have the first drive shaft 213 with
The first outfan is formed, first drive shaft is connected with the transmission of the first semiaxis 211, the center of the second planet carrier is driven with second
To form the 3rd outfan, second drive shaft is connected axle 214 with the transmission of the second semiaxis 212.Planet carrier is adopted to enter for wheel
Row torque output, delivery efficiency are higher.In addition, in the present embodiment, the first sun gear is connected with the side of differential mechanism with shape
Into the second outfan, the second sun gear is connected together to the epicyclic train of the 4th outfan, i.e., two with the opposite side of differential mechanism
Two sun gears of system are connected by differential mechanism, can realize the normal table of two planetary gear systems under different road conditions
Output.
With first embodiment similarly, between the output shaft of the first gear ring 2041 and the first motor 2011, the second gear ring
2042 and second motor 2012 output shaft between by gear drive connect.Also to ensure that to the normal row of both sides wheel
The torque output sailed under state is consistent, and the first motor 2041 is identical with the second motor 2011, first planet train 2021 and second
Planet circular system 2022 is identical and is symmetrical arranged with regard to differential mechanism.The identical species for referring to the part for possessing therein, quantity, size
With assembling mode all same.
Second embodiment provide drive axle in, including the first semiaxis for being connected with the first wheel 217 and with
For the second semiaxis being connected with the second wheel 218, and the vehicle line traffic control drive mechanism in above-mentioned second embodiment.Tool
Body ground, the first outfan are connected by the transmission of first shaft coupling 215 with the first semiaxis 211, the 3rd outfan and the second semiaxis 212
It is connected by the transmission of second shaft coupling 216.
The electric automobile provided in second embodiment includes the drive axle that above-mentioned second embodiment is provided, Yi Jilian
The first wheel 217 being connected on the first semiaxis 211 and the second wheel 218 being connected on the second semiaxis 212.In addition, this enforcement
Electric automobile in mode also include controller 219, for detect the first wheel wheel speed the first wheel speed sensors 220 and
For detecting the second wheel speed sensors 221 of the wheel speed of the second wheel, the first wheel speed sensors and the second wheel speed sensors difference
Electrically connect with controller 219, controller 219 is electrically connected with the first motor and the second motor respectively.I.e. controller can be according to wheel
Speed is individually controlled to two motors, so as to export different moments of torsion according to demand.So that wheel adapts to different road conditions.
Wherein adjusting the torque output to two wheels by wheel speed can be in vehicle travel process in two bus or train routes
Produce different braking moments, in real time the kinestate of amendment vehicle body, can realize preventing vehicle slip, prevent vehicle rollover,
Vehicle whipping etc. function is prevented, the intellectuality of electric automobile is greatly improved.Wherein specifically control mode by with reference to following
First embodiment and the 3rd embodiment are illustrated together.
Above describe disclosure second embodiment, it is following middle the 3rd embodiment of the disclosure to be introduced with reference to Fig. 3.
As shown in figure 3, in the vehicle line traffic control drive mechanism that the 3rd embodiment is provided, including with the first output shaft and
The motor 301 of the second output shaft, first planet gear train 3021, the second epicyclic train 3022 and differential mechanism 322, first planet
Gear train 3021 with the first output shaft first input end for being connected of transmission, and for the first semiaxis with vehicle bridge side
The first outfan that 311 transmissions are connected, the second epicyclic train 3022 is with the second input being connected with the transmission of the second output shaft
End, and the 3rd outfan being connected for the transmission of the second semiaxis 312 with vehicle bridge opposite side, first planet gear train 3021 is also
With the second outfan, the second epicyclic train 3022 also has the 4th outfan, the second outfan and the 4th outfan difference
First brake 3031 is connected in the both sides of differential mechanism 322 and is connected between the second outfan and differential mechanism 322, the
Second brake 3032 is connected between four outfans and differential mechanism.
So, in the present embodiment, the single motor for employing dual output is driven, and can reduce using two motors
Due to the driving error that the factors such as manufacture are brought, equally it is driven using two independent epicyclic trains, it is big with ratio is passed,
Two independent epicyclic trains in addition with second embodiment similarly, are connected by the characteristics of noise is little using differential mechanism, can
To ensure the both sides wheel adjustment during vehicle is kept straight on and turned.Two independences are carried out additionally, due to single motor is adopted
Epicyclic train be driven, in order to realize the regulation to both sides vehicle output torque, present embodiment is additionally used as two
Side epicyclic train is equipped with the mode of brake, so by two brakes of independent control, can freely control both sides
On-position.Two of which brake can be various mechanical brakes that can be automatically controlled on market in the present embodiment,
For example, the rotating friction plate being attached on corresponding power transmission shaft can be included, and relative to the brake tooth that vehicle frame is fixed, can be passed through
Control brake tooth and the friction teeth of friction plate periphery engage or are disengaged from realizing braking.In other embodiments,
Can be realized using the electromagnetic brake in first embodiment.Differential mechanism wherein in present embodiment can be in the art
The differential mechanism of known open differential, or band brake function.
In the present embodiment, two independent epicyclic trains are driven in order to realize a dual-output motor, such as Fig. 2 institutes
Show, first planet gear train includes the first gear ring 3041, the first row star-wheel 305, the first row carrier 306, the first sun gear 307,
Second epicyclic train includes the second gear ring 3042, the second planetary gear 308, the second planet carrier 309 and the second sun gear 310, the
One planetary gear 305 is engaged between the first gear ring 3041 and the first sun gear 307, and the second planetary gear is engaged on the second gear ring 3042
And second between sun gear 310, the first row carrier 306 supports the first row star-wheel 305, the second planet carrier 309 to support the second planet
Wheel 308, the first gear ring 3041 and the transmission of the first output shaft are connected together to first input end, the second gear ring 3042 and the second output
Axle transmission is connected together to the second input, and one of the first row carrier and the first sun gear are for being driven phase with the first semiaxis
Even to form the first outfan, another one is connected together to the second outfan with the first brake, and the second planet carrier and second is too
For being connected together to the 3rd outfan with the transmission of the second semiaxis, another one is connected with shape one of sun wheel with second brake
Into the 4th outfan.
More specifically, the center of the first row carrier 306 has the first drive shaft 313 to form the first outfan, this first
Drive shaft is connected with the transmission of the first semiaxis 311, and the center of the second planet carrier 309 has the second drive shaft 314 defeated to form the 3rd
Go out end, second drive shaft is connected with the transmission of the second semiaxis 312.I.e. in the present embodiment, still using planet carrier as vehicle
Outfan.In addition, the first sun gear 307 and the first brake 3031 are connected together to the second outfan, the second sun gear 310
The 4th outfan is connected together to second brake 3032, i.e., using sun gear as braked wheel.
In addition, between the first gear ring 3041 and the first output shaft, passing through between the second gear ring 3042 and the second output shaft
Gear drive connects.
In order to ensure the stable traveling of both sides vehicle, first planet train 3021 and 3022 identical and pass of the second planet circular system
It is symmetrical arranged in differential mechanism 322, the first brake 3031 is identical with second brake 3032 and symmetrically sets with regard to differential mechanism 322
Put.So as in normally travel, for the identical torque output that both sides vehicle is provided, and it is easy to control.
In the drive axle for providing in the present embodiment, including the first semiaxis 311 for being connected with the first wheel 317 and
With the second semiaxis 312 for being connected with the second wheel 318, also including present embodiment in above-mentioned vehicle line traffic control driving machine
Structure.Wherein, the first outfan is connected by the transmission of first shaft coupling 315 with the first semiaxis 311, the 3rd outfan and the second semiaxis
312 are connected by the transmission of second shaft coupling 316.
In the electric automobile that present embodiment is provided, drive axle is provided including present embodiment, and be connected to first
The first wheel 317 and the second wheel 318 being connected on the second semiaxis 312 on semiaxis 311.In addition, the electric automobile is also wrapped
Include controller 319, for detect the first wheel wheel speed the first wheel speed sensors 320 and for detect the second wheel wheel
Second wheel speed sensors 321 of speed, the first wheel speed sensors and the second wheel speed sensors are electrically connected with the controller respectively, controller
Electrically connect with motor, the first brake and second brake respectively.The moment of torsion of both sides vehicle can be entered according to both sides wheel speed
Row is adjusted.
Wherein adjusting the torque output to two wheels by wheel speed can be in vehicle travel process in two bus or train routes
Produce different braking moments, in real time the kinestate of amendment vehicle body, can realize preventing vehicle slip, prevent vehicle rollover,
Vehicle whipping etc. function is prevented, the intellectuality of electric automobile is greatly improved.
In each embodiment of the disclosure, when daily driving conditions, corresponding motor obtains electric work, through planetary gear
System, the mechanism such as corresponding shaft coupling, corresponding semiaxis drive left and right wheel rotation, second and the 3rd the differential mechanism in embodiment exist
The production error of both sides motor itself when vehicle is kept straight on, is eliminated, makes the driving moment of left and right wheel equal.In addition, turning
In etc. road conditions traveling, the wheel speed of both sides vehicle is perceived by controller, by controlling two motors in second embodiment, or
The on-position of two brakes in person first and the 3rd embodiment, controls the torque output to controlling both sides wheel,
So as to produce different braking moments.
Below as a example by preventing vehicle slip, prevent vehicle rollover, ABS anti-locks, each embodiment of the description disclosure is carried
For the application under special circumstances of drive-by-wire mechanism, wherein realizing following feelings by adjusting the output torque of both sides vehicle
The principle of the process of condition is known to those skilled in the art.
Prevent vehicle slip：Electric automobile is often all-wheel drive, and it is control anti-slip that differential and difference power control are designs
Two big research directions.Wherein, during steering, each wheel turning radius is different, it is desirable to which each wheel can be with different rotational speeds. when
When each wheel contact pavement behavior is variant, traction is different, and the maximum drawbar pull of each wheel output is also different, if do not entered
Row is adjusted, and system power output is consistent, and pull strength is just determined by that minimum wheel of adhesive force, that is, drive each wheel
Pull strength is power no more than adhering to, and otherwise the wheel will skid.The driving force of so whole vehicle is possible to drive
Dynamic whole vehicle advances, therefore it is required that each wheel can realize difference, difference power control.Can install in each embodiment of the disclosure
Speed probe, can in Real-time Feedback vehicle operation each wheel rotating speed, by controller according to meter set in advance
Calculation program judges that wheel whether in slipping state, for example, presets wheel speed threshold, difference in wheel threshold value.By real-time wheel speed and threshold value
Between comparison, Current vehicle whether normally travel can be learnt, so, controller can be controlled by automatically controlled mode accordingly
The on-position of the output and/or brake of motor so that each wheel side semiaxis results from the driving that vehicle body running status is consistent
Torque and rotating speed, or the wheel that will directly skid is changed into quick condition from driving condition, that is, stop torque output.So system can
To re-establish work torque, vehicle slip is prevented.
Differential braking prevents vehicle rollover：Automobile can be produced when there is understeer and be deviateed on the outside of ideal trajectory
Tendency, and ovdersteering then contrast has the tendency of to deviate on the inside of ideal trajectory.Therefore in order to correct deficiency
Turn to or ovdersteering tendency, need to produce a reverse-biased boat torque, the present invention is by the control to motor and/or corresponding brake
System can be realized realizing differential braking for both sides vehicle, and when there is understeer, brake force can act on the trailing wheel of inner side
On, and in serious ovdersteering, it may appear that whipping, this tendency can be braked by the front-wheel to outside is entangled
Just, vehicle is brought back on desired geometric locus.
ABS anti-locks are in addition：ABS is acted in terms of mainly having two, and one is in order to prevent wheel lock up, when keeping braking
Road holding, two is to shorten automobile brake distance.During vehicle emergency brake, with the increasing of braking moment
By force, relative slip, i.e. the two speed can be produced between vehicle body and tire and there is certain difference, the wheel for originally rolling gradually goes out
The trend of existing tire locking, its rollability are less and less, and the motion between road surface is more intended to slide.Slip rate is exactly
The physical quantity of locking state is converted to for describing tire by rolling condition.Braking procedure can use braking moment and ground friction
The dynamic system that power is constituted describing, when slip rate refers to braking, the ratio in wheel movement shared by slip composition, λ is
Wheel slip, when between tire and road surface being the kinestate of complete rolling, defines λ=0, when between tire and road surface being
During the kinestate for sliding completely, λ=1 is defined, when tire and road surface are between rolling and the kinestate for sliding, 0
＜ λ ＜ 1.
When so vehicle is braked, the attachment system that it is critical only that between slip rate and tire and road surface interface of tire locking
Number is in certain nonlinear curve relation.When the achievable vehicle of each embodiment of the disclosure starts braking, system is rapidly provided
Dynamic pressure, now wheel wheel speed decline are rapid, wheel slip increase, and wheel starts steady with slip rate curve from attachment coefficient
Determine area and turn to unstable region.When the unstable region of wheel arrival curve, monitored by wheel speed sensors, information is passed to into control
Device processed, controller send buck signal, so as to reduce rapidly the braking moment of corresponding side wheel, make slip rate matching.It is logical
Reduction braking moment is crossed, after slip rate value revert to stability region, pressure holding is now carried out.When sliding rate score is slided to optimal
When offseting on the left of shifting rate, make motor output torque become big, increase braking moment, above procedure is repeated, and reaches ABS's
Braking effect.
Three kinds of optional embodiments of the disclosure are described in detail above in association with accompanying drawing, but, the disclosure is not limited to
Detail in above-mentioned embodiment, in the range of the technology design of the disclosure, can be carried out with technical scheme of this disclosure
Various simple variants, these simple variants belong to the protection domain of the disclosure.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the disclosure to it is various can
The compound mode of energy is no longer separately illustrated.
Additionally, combination in any can also be carried out between three kinds of different embodiments of the disclosure, as long as which is without prejudice to this
Disclosed thought, which should equally be considered as disclosure disclosure of that.
Claims (10)
1. a kind of vehicle line traffic control drive mechanism, it is characterised in that the vehicle line traffic control drive mechanism include with the first output shaft and
The motor (301) of the second output shaft, first planet gear train (3021), the second epicyclic train (3022) and differential mechanism (322),
The first planet gear train (3021) is with the first input end being connected with first output shaft transmission, and is used for and car
Bridge side the first semiaxis (311) transmission be connected the first outfan, second epicyclic train (3022) with it is described
The second input that the transmission of second output shaft is connected, and be connected for the second semiaxis (312) transmission with vehicle bridge opposite side
3rd outfan, the first planet gear train also have the second outfan, and second epicyclic train is also defeated with the 4th
Go out end, second outfan and the 4th outfan are connected respectively in the both sides of the differential mechanism and described second
The first brake (3031) is connected between outfan and the differential mechanism, is connected between the 4th outfan and the differential mechanism
It is connected to second brake (3032).
2. vehicle line traffic control drive mechanism according to claim 1, it is characterised in that the first planet gear train includes
One gear ring (3041), the first row star-wheel (305), the first row carrier (306), the first sun gear (307), second planetary gear
System includes the second gear ring (3042), the second planetary gear (308), the second planet carrier (309) and the second sun gear (310), described the
One planetary gear (305) is engaged between first gear ring (3041) and first sun gear, the second planetary gear engagement
Between second gear ring (3042) and second sun gear, the first row carrier supports the first row star-wheel, institute
State the second planet carrier and support second planetary gear,
First gear ring is connected together to the first input end with first output shaft transmission,
Second gear ring is connected together to second input with second output shaft transmission,
One of the first row carrier and first sun gear are connected together to institute for being driven with first semiaxis
The first outfan is stated, another one is connected together to second outfan with first brake,
One of second planet carrier and second sun gear are connected together to institute for being driven with second semiaxis
The 3rd outfan is stated, another one is connected together to the 4th outfan with the second brake.
3. vehicle line traffic control drive mechanism according to claim 2, it is characterised in that the center of the first row carrier has
To form first outfan, first drive shaft is connected first drive shaft (313) with first semiaxis (311) transmission,
The center of second planet carrier has the second drive shaft (314) to form the 3rd outfan, second drive shaft and institute
State the second semiaxis (312) transmission to be connected.
4. the vehicle line traffic control drive mechanism according to Claims 2 or 3, it is characterised in that first sun gear with it is described
First brake is connected together to second outfan, and it is defeated that second sun gear is connected together to the 4th with second brake
Go out end.
5. vehicle line traffic control drive mechanism according to claim 2, it is characterised in that first gear ring is defeated with described first
Between shaft, connected by gear drive between second gear ring and second output shaft.
6. vehicle line traffic control drive mechanism according to claim 1, it is characterised in that the first planet train and described
Two planet circular systems are identical and are symmetrical arranged with regard to the differential mechanism, and first brake is identical with the second brake and closes
It is symmetrical arranged in the differential mechanism.
7. a kind of drive axle, including the first semiaxis for being connected with the first wheel (317) and with for the second wheel (318)
The second connected semiaxis, it is characterised in that also include the vehicle line traffic control driving machine according to any one in claim 1-6
Structure.
8. drive axle according to claim 7, it is characterised in that first outfan and first semiaxis are by the
One shaft coupling (315) transmission is connected, and the 3rd outfan is driven phase by second shaft coupling (316) with second semiaxis
Even.
9. a kind of electric automobile, it is characterised in that include the drive axle according to claim 7 or 8, and be connected to described
The first wheel and the second wheel being connected on second semiaxis on first semiaxis.
10. electric automobile according to claim 9, it is characterised in that the electric automobile also include controller (319),
For detecting first wheel speed sensors (320) and wheel speed for detecting second wheel of the wheel speed of first wheel
The second wheel speed sensors (321), first wheel speed sensors and second wheel speed sensors respectively with the controller
Electrical connection, the controller are electrically connected with the motor, the first brake and second brake respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621117003.4U CN206141296U (en) | 2016-10-11 | 2016-10-11 | Vehicle drive -by -wire actuating mechanism , transaxle and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621117003.4U CN206141296U (en) | 2016-10-11 | 2016-10-11 | Vehicle drive -by -wire actuating mechanism , transaxle and electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN206141296U true CN206141296U (en) | 2017-05-03 |
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ID=58620938
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621117003.4U Active CN206141296U (en) | 2016-10-11 | 2016-10-11 | Vehicle drive -by -wire actuating mechanism , transaxle and electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114056124A (en) * | 2021-12-16 | 2022-02-18 | 东风德纳车桥有限公司 | Electric drive axle control method and system of electric automobile and electric automobile |
| CN114228483A (en) * | 2021-12-24 | 2022-03-25 | 易如(山东)智能科技有限公司 | Disconnected front steering drive axle capable of realizing left-right forward and reverse rotation |
-
2016
- 2016-10-11 CN CN201621117003.4U patent/CN206141296U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114056124A (en) * | 2021-12-16 | 2022-02-18 | 东风德纳车桥有限公司 | Electric drive axle control method and system of electric automobile and electric automobile |
| CN114228483A (en) * | 2021-12-24 | 2022-03-25 | 易如(山东)智能科技有限公司 | Disconnected front steering drive axle capable of realizing left-right forward and reverse rotation |
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