CN106882026A - A kind of bi-motor is without synchronous many gear dynamic coupling device and its control methods - Google Patents
A kind of bi-motor is without synchronous many gear dynamic coupling device and its control methods Download PDFInfo
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- CN106882026A CN106882026A CN201710201823.4A CN201710201823A CN106882026A CN 106882026 A CN106882026 A CN 106882026A CN 201710201823 A CN201710201823 A CN 201710201823A CN 106882026 A CN106882026 A CN 106882026A
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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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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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
- Y02T10/64—Electric machine technologies in electromobility
-
- 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)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to a kind of bi-motor without synchronous many gear dynamic coupling device and its control methods, described device includes main drive motor（17）, secondary motor（16）, power coupler（100）, power control unit（2）With power coupling control unit（10）, main drive motor（17）Output end and time motor（16）Output end respectively with power coupler（100）Input be connected, power control unit（2）Respectively with main drive motor（17）Output end, secondary motor（16）Output end and power coupler（100）Output end is connected, and cancels mechanical synchronization device and electric machine speed regulation control unit.Compared with the prior art, the invention has the advantages that：The present invention need not synchronize process when random shift switches, the synchronization includes any type of synchronizing processes such as mechanical synchronizer, electronic synchronizer, slip clutch synchronization, significantly simplify the structure of single unit system, reduce production cost, and without being safeguarded to synchronizer.
Description
Technical field
The present invention relates to keep off dynamic coupling device bi-motor more, more particularly to a kind of bi-motor for pure electric coach without
Synchronous many gear dynamic coupling device and its control methods.
Background technology
In order to further optimize the dynamic property and economy of vehicle, gear arrangement or many is carried on pure electric vehicle
Mode power coupling device has been increasingly becoming a kind of trend.At present, people have attempted to install AMT changes additional on pure electric coach
Speed variator, used as climbing off speed, high gear is used as meeting max. speed and general driving gear for the standing gear that sets low.But, it is traditional
AMT devices need to use clutch in gearshift, and power interruption will necessarily be produced after its effect.The power interruption phenomenon can cause
The even obvious impact of pause and transition in rhythm or melody sense, ride comfort and riding comfort in influence running car are produced in gear shift.Meanwhile, in order to
Coordinate clutch process, motor is also needed in gear shift carries out the electronic synchronizer treatment work such as accurate, quick speed governing, or even
There is still a need for using mechanical synchronization device.Such case necessity of making use of momentum asks motor to allow for accurately being adjusted in the big range of speeds
Speed, and supply the time of speed governing extremely short, therefore undoubtedly increased control difficulty；And machinery then will be further increased using synchronizer
The complexity of structure, along with synchronizer will necessarily produce mechanical wear again during sliding wear, therefore undoubtedly also increases
Maintenance difficulties.In the prior art, although general power coupler can derive more mode of operation, it does not consider
Vehicle dynamically runs over the actual conditions of pattern switching in journey.On the premise of power train has load, has rotating speed, different driving mould
Switching between formula will propose rigors to clutch, actuator, at the same the process have to the complicated electronic synchronizer of experience and
Mechanical synchronization process, motor high-precision control still can be produced to be difficult to, mechanical synchronization device maintenance difficulties increase etc. technology ask
Topic.And if power coupler is only capable of carrying out pattern switching under suspended state, being actually needed for vehicle traveling cannot be met again.
It can be said that existing power coupler is due to depending on the quality of the synchronizing processes such as electric machine speed regulation, mechanical synchronization device, thus in fact
It is poor with property, it would be highly desirable to improve.
The Chinese utility model patent of Patent No. ZL201520671900.9 discloses a kind of electric automobile bi-motor and moves
Power coupling device, including main drive motor, stand-by motor, planet circular system, clutch；The main rotating shaft for driving motor is with planet circular system too
Sun wheel connection, the planet carrier of planet circular system is clutch end, and the active part of clutch is connected to the gear ring of planet circular system, from
The secondary part of clutch is connected to the sun gear of planet circular system；The rotating shaft of stand-by motor is connected to the gear ring of planet circular system, described
Brake is used to brake the stand-by motor rotating shaft and gear ring.The utility model electric automobile double-motor power coupling mechanism structure
Simply, torque coupling and rotating speed coupling driving pattern are capable of achieving.But the utility model still continue to use existing mechanical synchronization device and
Machine governor carries out power coupling.Therefore, on the premise of power train has load, has rotating speed, double-motor power coupling dress
Putting in the handoff procedure between different driving pattern will propose rigors to clutch, actuator, and the operating process must
Complicated electronic synchronizer and mechanical synchronization process is experienced, motor high-precision control still can be produced to be difficult to, mechanical synchronization device
The technological deficiency of maintenance difficulties increase, it would be highly desirable to improve.
The Chinese invention patent of Patent No. ZL201510573696.1 discloses a kind of electric automobile multi-mode dynamical system
System, including controller, main drive motor, stand-by motor, planet circular system, first clutch and second clutch；It is main to drive turning for motor
Axle is connected with the sun gear of planet circular system, and the planet carrier of planet circular system is clutch end, and the active part of clutch is connected to
The gear ring of planet circular system, the secondary part of clutch is connected to the sun gear of planet circular system；The rotating shaft of stand-by motor is connected to row
The gear ring of star wheel series, is provided with gear ring brake on the gear ring.The invention electric automobile multi-mode power system architecture is simple,
It is capable of achieving torque coupling and rotating speed coupling driving pattern.But will be to clutch during switching of the invention between carry out different driving pattern
Device, actuator propose rigors, while the process is still necessary to experience the electronic synchronizer and mechanical synchronization process of complexity, enter
And motor high-precision control can be produced to be difficult to, mechanical synchronization device maintenance difficulties increase technical problem defect, it would be highly desirable to improve.
The Chinese invention patent of Patent No. ZL201510573820.4 discloses a kind of electric automobile double-motor power dress
Put, including controller, main drive motor, stand-by motor, planet circular system, clutch；The main rotating shaft for driving motor is with planet circular system too
Sun wheel connection, the planet carrier of planet circular system is clutch end, and the active part of clutch is connected to the gear ring of planet circular system, from
The secondary part of clutch is connected to the sun gear of planet circular system；The rotating shaft of stand-by motor is connected to the gear ring of planet circular system, described
Brake is used to brake the stand-by motor rotating shaft and gear ring.The invention electric automobile double-motor power apparatus structure is simple, can
Realize torque coupling and rotating speed coupling driving pattern.But existing mechanical synchronization device is still continued to use in the invention and machine governor enters
Action edge is coupled.Therefore, on the premise of power train has load, has rotating speed, the double-motor power coupling device is in different driving
Rigors will be proposed to clutch, actuator, the operating process must experience the electricity of complexity in handoff procedure between pattern
Sub synchronous and mechanical synchronization process, still can produce motor high-precision control to be difficult to, the increase of mechanical synchronization device maintenance difficulties
Technological deficiency, it would be highly desirable to improve.
The content of the invention
It is high, good reliability for pure electric coach it is an object of the invention to provide a kind of practical, functional integration
It is that bi-motor keeps off dynamic coupling device and its control methods without synchronous more, the demands that pure electric coach is travelled, and nothing can be met
Accurate electronic synchronizer need to be carried out, without using complicated synchronizer structure so that whole electric driver control is simple, from
Maintenance, reliability are high, practical.In order to realize foregoing invention purpose, traditional bi-motor coupling driving form is improved,
Compared to general tradition list motor form, using planetary gears as collector-shoe gear, the power of bi-motor is confluxed coupling
Exported after conjunction, two motor peak power sums should be approximately equal to corresponding single motor peak power；Two motor peak torques
Sum is approximately equal to corresponding list motor peak torque, power coupler of the invention can according to control need to carry out torque coupling and
Rotating speed is coupled.Therefore, in order to solve to keep off the technological deficiency that dynamic coupling device is present above-mentioned existing bi-motor, the present invention is used more
Technical scheme it is as follows：
A kind of bi-motor is without synchronous many gear dynamic coupling devices, including main drive motor, secondary motor, power coupling
The output end of device, power control unit and power coupling control unit, the output end of the main drive motor and time motor
The input with the power coupler is connected respectively, and the power control unit is exported with the main drive motor respectively
End, secondary motor output end are connected with power coupler output end, cancel mechanical synchronization device and electric machine speed regulation control unit.
Power the greater in two motors is defined as the main drive motor, another is defined as time motor, its
In：Should can meet in middling speed, middle moment of torsion section, the efficiency characteristic of general motor between the high efficient area of the main drive motor
The requirement；Described motor is mainly used in providing required additional torque value under specific operation, it is only necessary to consider that its moment of torsion is special
Property, to rotary speed property without excessive requirement.
The power coupler control unit (Coupling Control Unit, CCU), for controlling power coupler
In brake and driving clutch work actuator；Meanwhile, it can monitor whether are clutch position and brake
Deng signal.
Preferably, the power coupler includes that planetary gears, two-way trapezoidal jaw clutch, clutch are performed
Device and brake, the two-way trapezoidal jaw clutch are connected with the clutch executor, and the power coupling control is single
Unit is connected with the clutch executor and brake respectively.
The two-way trapezoidal jaw clutch is driven by a clutch executor that can provide enough driving forces, is made
It can be moved in the axial direction.
In any of the above-described scheme preferably, the planetary gears includes planet carrier, sun gear and gear ring, described
The output shaft of main drive motor is connected with the sun gear, and moment of torsion coupling is coaxially installed with the output shaft of the main drive motor
Little gear is closed, the described output end of motor is connected with the two-way trapezoidal jaw clutch, described two-way trapezoidal
Jaw clutch side is equipped with torque couple gear wheel, and the torque couple gear wheel is mutually nibbled with the torque couple little gear
The ratio between conjunction and the number of teeth are more than 1, and its opposite side is equipped with gear ring meshing gear, and the gear ring meshing gear is meshed with the gear ring,
Brake is housed on the gear ring, the brake can quickly by the gear ring locking or release, i.e., described gear ring oneself
It is controllable by spending.
In any of the above-described scheme preferably, including vehicle main retarder, the output end of the planetary gears with
The input of the vehicle main retarder is connected.
In any of the above-described scheme preferably, the two-way trapezoidal jaw clutch include rotating speed coupled clutch and
Torque couple clutch.
In any of the above-described scheme preferably, the power source of the clutch executor is driven using electromagnetic absorption joint type, motor
Any one in dynamic formula, hydraulic driven and air pressure driven type.
In any of the above-described scheme preferably, the power control unit is in the main drive motor output end, secondary drive
Dynamic motor output end and power coupler output end are respectively arranged with main drive motor OSS, secondary motor
OSS and coupler OSS, the speed probe are encapsulated in the dynamic coupling device
Inner space.The signal that each rotating speed that the speed probe is gathered is referred to when being coupled mode decision-making.
It is preferably in any of the above-described scheme, including full-vehicle control unit and motor control unit, the dynamic Control
Unit is connected with the full-vehicle control unit and motor control unit respectively.
The power control unit (Traction Control Unit, TCU) can be with the full-vehicle control unit
(Vehicle Control Unit, VCU) is communicated, and receives comprehensive descision after the information such as the control command from VCU, pedal aperture
Current driving force distribution and drive pattern strategy, and feed back current vehicle drive status information；Meanwhile, it can be with the motor control
Unit (Motor Control Unit, MCU) processed and power coupler control unit (CCU) are communicated, to the motor and power
Coupler sends control command, and can receive the status information of the motor and coupler feedback.
It is preferably in any of the above-described scheme, including vehicle CAN communication network, internal CAN communication network, battery management
System, Meter Control Unit, vehicle other modules, the node of the internal CAN communication network insertion has the dynamic Control list
Unit, motor control unit, power coupling control unit and full-vehicle control unit, wherein the power control unit is the inside
The major control node of CAN communication network；The node of the vehicle CAN communication network insertion has the full-vehicle control unit, electricity
Pond management system, Meter Control Unit and vehicle other modules.
, using independent described internal CAN communication network (CAN2), it can be logical with original vehicle CAN for the present invention
News network (CAN1) form the good degree of association, and will not produce communication redundancy, and VCU can realize CAN1, the upper information of CAN2
Forwarding.
In any of the above-described scheme preferably, other modules of the vehicle include accelerator pedal module and brake pedal mould
Block.
In any of the above-described scheme preferably, including electrokinetic cell, the electrokinetic cell respectively with the battery management
System is connected with motor control unit.
It is preferably in any of the above-described scheme, including driving wheel of vehicle, vehicle drive axle and vehicular transmission shaft, it is described dynamic
The output end of mechanical couple is connected with the vehicular transmission shaft, and the vehicular transmission shaft is connected with the vehicle drive axle,
The vehicle drive axle is connected with the driving wheel of vehicle.
In order to solve that the technological deficiency that power coupling control method is present is kept off above-mentioned existing bi-motor more, what the present invention was used
Technical scheme is as follows：
A kind of bi-motor includes any of the above-described without synchronous many gear power coupling control methods, the device for implementing the method
Bi-motor keeps off dynamic coupling devices, including vehicle acceleration control flow and vehicle braking procedure control flow more without synchronous,
Using pedal state as wagon control condition, when only accelerator pedal is stepped on for vehicle accelerates pattern effective；When only braking
Pedal is stepped on, accelerator pedal and brake pedal are while step on, accelerator pedal and brake pedal be while be vehicle system when not stepping on
Dynamic model formula is effective.
Preferably, the vehicle acceleration control flow is comprised the following steps：
Step one：During vehicle lay-off, the torque couple clutch is often engaged, and the brake is often braked, i.e., be often in
Moment of torsion keep off, the full-vehicle control unit detect vehicle accelerate pattern it is effective when, to the power control unit send order, institute
Stating the power control unit control motor control unit makes the main drive motor and the moment of torsion of time motor increase, car
Give it the gun；As velocity amplitude V1 of the speed more than setting, the main drive motor increases moment of torsion, and described time motor subtracts
Small moment of torsion, and keep its total torque to meet the driving torque value of current demand；When described motor torque value is less than close
During zero smaller torque value M1, you can assert that described motor has unloaded completion, the clutch executor is by the torsion
Square coupled clutch is disengaged, into hanging gear.
In any of the above-described scheme preferably, step 2：In hanging gear, only described main drive motor output is dynamic
Power, vehicle is in medium speed section, and also relevant work, in middling speed, middle moment of torsion section, belongs to general motor to the main drive motor
High efficient district, by the brake rotating speed is zero due to the gear ring as velocity amplitude V2 of the speed more than setting, described time
It is zero that motor shuts down rotating speed, therefore the clutch executor direct action engages the rotating speed coupled clutch, engagement
Afterwards, described motor increase moment of torsion, as torque value M2 of its moment of torsion more than setting, you can assert described motor
Load successfully, the brake release, into rotating speed gear.
In any of the above-described scheme preferably, step 3：When rotating speed keeps off, the main drive motor and time motor
Moment of torsion output is superimposed by the planetary gears, its rotating speed can couple and further be improved so that exporting rotating speed, with
Car speed to continue to increase until when reaching max. speed limitation, i.e., being travelled with max. speed.
In any of the above-described scheme preferably, the vehicle braking procedure control flow is comprised the following steps：
Step one：When vehicle is travelled with max. speed, the rotating speed coupled clutch engagement, the brake release, institute
State full-vehicle control unit detect vehicle braking mode effectively and current vehicle speed less than setting velocity amplitude V3 when, to the power
Control unit sends order, and the power control unit control motor control unit makes the main drive motor keep current
Moment of torsion, described time motor carries out braking energy feedback, that is, produce negative torque, due to the described braking torque of motor
Effect, the gear ring rotating speed can be reduced, and described time motor rotating speed can be reduced, the output rotating speed meeting of the power coupler
Reduce so that vehicle deceleration；When described rotating speed of motor is less than smaller value N1 close to zero, that is, assert described time and drive
Dynamic motor and the gear ring have been braked successfully, and now described time motor is cancelled braking energy feedback and remained shut off,
The brake thoroughly brakes the gear ring, and the now clutch executor action disengages the rotating speed coupled clutch,
Into hanging gear.
In any of the above-described scheme preferably, step 2：In hanging gear, the main drive motor carries out braking energy
Feedback, described motor remains shut off state, and car speed continues to reduce；As smaller vehicle speed value V4 of the speed less than setting
When, operator brake is carried out by the full-vehicle control unit and is intended to judge, if it is determined that driver's driving intention is vehicle lay-off, then
Sent to the power control unit and ordered so that the main drive motor proceeds braking energy feedback, described driving
Motor still remains shut off state, and remaining executing agency does not carry out any operation, and car speed continues to be decreased to vehicle lay-off, now
The clutch executor action engages the torque couple clutch, into moment of torsion gear；If it is determined that driver's driving intention is
Run at a low speed, then the clutch executor action engages the torque couple clutch, into moment of torsion gear, the main driving electricity
Machine and time motor carry out braking energy feedback, and car speed is decreased to vehicle lay-off.
Compared with the prior art, the invention has the advantages that：The present invention can be well applied to pure electric vehicle, especially
It is pure electric coach field, and the main drive motor for being used and time motor cooperate, and can well widen vehicle
Driving force, rotating speed are adjustable interval, optimizes driving external characteristics, improves vehicle performance.The present invention can play simultaneously speed changer,
The function of the big vehicle core component of coupler, decelerator three, and while basic function is met, can well overcome existing
The inherent shortcoming of part, simple structure of the present invention, characteristics of compact layout, compared to existing above three part, speed changer of the present invention,
Coupler, the quality of decelerator and volume significantly reduce, and are conducive to arrangement and light-weight design.
The present invention compared to general gear arrangement (such as AMT), with technique effect following aspects：
1. drive gearshift when power failure-free, unpowered fluctuation technique effect.The main drive motor during driving
Power can be exported to vehicle always, be not in any power interruption phenomenon；Secondary motor can coordinate brake to act on
Power train is smoothly accessed, it does not only have grace time matching moment of torsion, and motor is convenient to fast accurate tune torsion, power train in itself
On do not have mutation load.Therefore, the ride performance and riding comfort of vehicle can be substantially improved, and further eliminate one
As speed changer because on power transmission shaft moment of torsion zero again load produced by torsion shake etc. harm, so as to further improve the work of each parts
Make the life-span.
2. in braking downshift, secondary motor, main drive motor carry out braking energy feedback in an orderly manner successively, and each
Instantaneously having motor is carrying out braking energy feedback, to greatest extent can be reclaimed energy when braking, it might even be possible to
The energy that section transmission is fastened is also carried out effectively recovery.
3. process need not be synchronized when random shift switches, and the synchronization includes mechanical synchronizer, electron synchrotron
Any type of synchronizing processes such as step, slip clutch synchronization.I.e. the present invention significantly simplifies without using mechanical synchronizer
The structure of single unit system, reduces production cost, and without being safeguarded to synchronizer；Because the present invention need not carry out electron synchrotron
Step, i.e., carry out cumbersome speed governing gearshift matching process, so as to significantly reduce motor control difficulty, without to electricity without motor
Machine control accuracy proposes rigors；Slip clutch without using complexity of the invention, without considering lubrication, radiating, tieing up
The complicated technical problems such as shield, to clutch executor also without particular/special requirement, as long as provide moving axially driving force enough.
The present invention is compared to having the technical effect that general dynamic coupling device has：The present invention has taken into full account that vehicle is expert at
Various states and demand in sailing, can be actually needed according to vehicle carries out rational gear switching control.And general power
Coupling device, what is had can only carry out pattern switching under vehicle lay-off state, have then need to use complexity such as wet type clutch
Device, freewheel clutch, synchronizer, precise electronic speed governing etc. could complete dynamic mode switching.It is of the invention then car can met
Traveling in dynamic mode switching on the basis of, only used the jaw clutch, its structure and control it is relatively simple,
It is easily achieved gear shift operation.
The present invention considers operator brake and is intended to when moment of torsion gear is fallen into, once judge current driving intention as vehicle is made
Stagnation of movement, then can be again to engage torque couple clutch in the case of power train zero-turn speed, zero load in vehicle lay-off, so
The dynamic that the trapezoidal jaw clutch can further be reduced is put into gear number of times, is conducive to improving the trapezoidal jaw clutch
The working life of device.
The kind of drive involved in the present invention includes meshed transmission gear, jaw clutch engaged transmission, planetary gear
Transmission, its can transmitting torque it is larger, transmission efficiency is higher, and to lubrication, cooling requirements it is low, the energy under the mode of operation
Enough realize non-maintaining technique effect.
Bi-motor coupling driving pattern proposed by the invention, relieves single motor in the limitation in terms of power, moment of torsion；
In the case of in same power, with moment of torsion so that cost is substantially reduced；Meanwhile, the coupling driving of bi-motor also improves electric drive
The fault-tolerance of system.
It is moment of torsion gear, hanging gear and rotating speed gear that the power coupler of the invention is further discriminated between.It is described in starting
Two motors directly carry out torque couple, can be improved vehicle start acceleration, grade climbing performance, and two motors
Coordinate mutually, worked in high efficient district as far as possible；After vehicle start, the main drive motor is operated in middling speed, middle torsion section just,
Can be operated in high efficiency area；When speed needs further to improve, two motor carries out rotating speed coupling, makes
Vehicle max. speed is further lifted.Therefore, the main drive motor is effectively exporting power, described driving always
Motor is then supplemented power in good time according to vehicle-state, and two motors can be operated in high efficiency range, can be simplified motor and be set
Meter, optimizes electric efficiency characteristic.
The speed probe for entering row related signal collection in the present invention is encapsulated in inside whole dynamic coupling device,
Without increasing sensor in existing structure；The present invention has independent inside CAN network, it is only necessary to which TCU and VCU enters row information
Interaction, without carrying out complex data transmission in each controller of existing vehicle, shortens system response time, improves and is
System reliability.The present invention is easy to implement, is easy to the transformation and upgrade to existing structure, with stronger practicality.
Brief description of the drawings
Fig. 1 shows as the general structure of a preferred embodiment of the bi-motor of the invention without synchronous many gear dynamic coupling devices
It is intended to；
Fig. 2 shows as the partial structurtes of a preferred embodiment of the bi-motor of the invention without synchronous many gear dynamic coupling devices
It is intended to；
Fig. 3 adds as the vehicle of a preferred embodiment of the bi-motor of the invention without synchronous many gear power coupling control methods
Fast process control flow schematic diagram；
Fig. 4 used as vehicle system of the bi-motor of the invention without the synchronous preferred embodiments for keeping off power coupling control methods more
Dynamic process control flow schematic diagram.
Description of reference numerals：
1 electrokinetic cell；2 power control units (Traction Control Unit, TCU)；3 battery management systems
(Battery Management System, BMS)；4 inside CAN communication network (CAN2)；5 vehicle CAN communication networks
(CAN1)；6 Meter Control Units (Instrument Control Unit, ICU)；7 full-vehicle control unit (Vehicle
Control Unit, VCU)；8 main drive motor OSSs；9 vehicles other modules；The control of 10 power couplings is single
First (Coupling Control Unit, CCU)；11 driving wheel of vehicle；12 vehicle drive axles；13 vehicular transmission shafts；14 couplers
OSS；15 driving motor output shaft speed probes；16 motors (Traction Motor 2,
TM2)；17 main drive motors (Traction Motor 1, TM1)；18 motor control units (Motor Control Unit,
MCU)；19 vehicle main retarders；100 power couplers；101 torque couple little gears；102 clutch executors；103 sun gears；
104 brakes；105 planet carriers；106 gear rings；107 gear ring meshing gears；108 rotating speed coupled clutches；109 torque couple clutches
Device；110 torque couple gear wheels.
Specific embodiment
The present embodiment is only an optimal technical scheme, wherein each involved building block and annexation are not limited
In following this kind of embodiment described by the embodiment, the setting and connection of each building block in the preferred scheme
Relation can carry out arbitrary permutation and combination and form complete technical scheme.
Technical scheme of the bi-motor without synchronous many gear dynamic coupling devices is described in detail with reference to Fig. 1,2：
A kind of bi-motor is without synchronous many gear dynamic coupling devices, including main drive motor 17, secondary motor 16, power coupling
Clutch 100, power control unit 2 and power coupling control unit 10, the output end of main drive motor 17 and time motor 16
Input of the output end respectively with power coupler 100 be connected, power control unit 2 is exported with main drive motor 17 respectively
End, the output end of secondary motor 16 are connected with the output end of power coupler 100, cancel mechanical synchronization device and electric machine speed regulation control
Unit.Power coupler 100 includes planetary gears, two-way trapezoidal jaw clutch, clutch executor 102 and brake
104, the two-way trapezoidal jaw clutch is connected with clutch executor 102, power coupling control unit 10 respectively with from
Actuator 102 is closed to be connected with brake 104.The planetary gears includes planet carrier 105, sun gear 103 and gear ring
106, the output shaft of main drive motor 17 is connected with sun gear 103, and torsion is coaxially installed with the output shaft of main drive motor 17
Square couples little gear 101, and the output end of secondary motor 16 is connected with the two-way trapezoidal jaw clutch, described two-way
Trapezoidal jaw clutch side is equipped with torque couple gear wheel 110, torque couple gear wheel 110 and torque couple little gear
101 are meshed and the ratio between the number of teeth is more than 1, and its opposite side is equipped with gear ring meshing gear 107, gear ring meshing gear 107 and gear ring 106
It is meshed, brake 104 is housed on gear ring 106.Including vehicle main retarder 19, output end and the vehicle master of planet carrier 105 subtract
The input of fast device 19 is connected.The two-way trapezoidal jaw clutch includes rotating speed coupled clutch 108 and torque couple
Clutch 109.The power source of clutch executor 102 uses electromagnetic absorption joint type, motor-driven, hydraulic driven and Pneumatic Transmission
Any one in formula.Power control unit 2 is in the output end of main drive motor 17, the output end of secondary motor 16 and power coupling
The output end of device 100 is respectively arranged with main drive motor OSS 8, secondary driving motor output shaft speed probe 15
With coupler OSS 14, the speed probe is encapsulated in the inner space of the dynamic coupling device.Bag
Include full-vehicle control unit 7 and motor control unit 18, power control unit 2 respectively with full-vehicle control unit 7 and motor control list
Unit 18 is connected.Including vehicle CAN communication network 5, internal CAN communication network 4, battery management system 3, Meter Control Unit 6,
Vehicle other modules 9, the dynamic control unit 2 of node, motor control unit 18, power coupling that internal CAN communication network 4 is accessed
Control unit 10 and full-vehicle control unit 7 are closed, wherein power control unit 2 is the major control section of internal CAN communication network 4
Point；The node that vehicle CAN communication network 5 is accessed has full-vehicle control unit 7, battery management system 3, Meter Control Unit 6 and whole
Car other modules 9.Other modules 9 of vehicle include accelerator pedal module and brake pedal module.Including electrokinetic cell 1, power electric
Pond 1 is connected with battery management system 3 and motor control unit 18 respectively.Including driving wheel of vehicle 11, the and of vehicle drive axle 12
Vehicular transmission shaft 13, the output end of power coupler 100 is connected with vehicular transmission shaft 13, vehicular transmission shaft 13 and vehicle traction
Bridge 12 is connected, and vehicle drive axle 12 is connected with driving wheel of vehicle 11.
The general characteristic of the trapezoidal jaw clutch is：Intensity is larger, and engagement and disengagement are easier, tooth side clearance
It is smaller and can compensate automatically upon wear, the impact produced by gap in load and velocity variations can be avoided, it can be
Engaged during rotating speed≤jaw clutch maximum engaging rotating speed.
Operation principle of the invention：
In vehicle lay-off, secondary driving motor output shaft is combined by trapezoidal jaw clutch with travelling gear, system
Dynamic device keeps off gear ring locking into moment of torsion；In starting or climbing, main drive motor and time motor will by gear engagement
Exported after torque couple so that vehicle acceleration capacity and climbing capacity are strengthened.When vehicle accelerates to certain speed, main drive
After dynamic Motor torque increase, secondary motor moment of torsion are gradually decreased to certain value, clutch executor is by trapezoidal jaw clutch
Clawback keeps off to without engagement into hanging；Main drive motor exports power to vehicle always during this.When car speed after
During continuous increase, be allocated to for trapezoidal jaw clutch and progressively increase with gear ring engagement, secondary motor moment of torsion by clutch executor
Big brake discharges gear ring to certain value, into rotating speed gear；Main drive motor and time motor pass through planetary gears
Exported after rotating speed is coupled so that vehicle max. speed is further improved.
When coupler is in rotating speed gear, vehicle and is travelled with speed higher, once vehicle starts braking, secondary motor meeting
Feedback braking pattern (producing negative torque) is preferentially entered, gear ring rotating speed can be reduced quickly, after certain value is dropped to, brake can
So that by gear ring locking, now secondary motor stalling, clutch executor nibbles trapezoidal jaw clutch clawback to nothing easily
Conjunction state, into hanging gear.If subsequent vehicle is further braked, main drive motor enters feedback braking pattern, sun rotation
Prompt drop is low, the reduction of main drive motor output shaft gear rotating speed is driven, due to gear ratio relation, tooth in secondary driving motor output shaft
Wheel speed will be lower, when the value it is low to certain value after, clutch executor by trapezoidal jaw clutch clawback to and travelling gear
Bonding state, into moment of torsion gear.
Vehicle is to constitute a base regime to circulate by the stagnation of movement, starting, acceleration, deceleration, stagnation of movement, vehicle during it
Additional complexity, unusual operation need not be done, can be by autonomous completion mode handover procedure of the invention.Above-mentioned each gear pattern switching of vehicle
Opportunity will can accurately identify car by judging to be given after the information such as TCU synthesis accelerator pedal, brake pedal, speed, motor status
State and driver intention, are not in the phenomenons such as circulation gearshift.In above-mentioned shift process, brake, clutch executor exist
Without allow the motor to carry out fast accurate speed governing in advance during work, without using mechanical synchronization device, and without bright in shift process
Aobvious sliding wear process, the i.e. present invention can be realized without same step gear shifting in shift process.In above-mentioned shift process, main drive motor one
It is straight to control completion moment of torsion matching process, the i.e. present invention to exist by TCU to vehicle output power, and before the input of secondary motor moment of torsion
Power failure-free, unpowered fluctuation gearshift can be realized in shift process.Planet tooth is selected in power coupler used of the invention
Wheel mechanism, and using planetary gears as output, itself just has the effect slowed down and increase and turn round.Simultaneously can be by Reasonable
Relevant parameter is put, simplifies main reducing gear size and structure.The present invention can carry out same structure and expand, i.e., by introducing extra electricity
Machine, planetary gears, using the planetary gears output shaft as new planetary gears input, expand moment of torsion and
The adjustable range of rotating speed, controllable gear can also increase with the quantity exponentially for introducing the planetary gears.In view of mesh
Just can be met in the form of bi-motor coupling on preceding pure electric coach and generally use needs, therefore the present invention is only to bi-motor coupling
Conjunction form is set forth, but isostructural Extended forms should also fall within the scope of the present invention.
Technical scheme of the bi-motor without synchronous many gear power coupling control methods is described in detail with reference to Fig. 1-4：
A kind of bi-motor includes any of the above-described kind without synchronous many gear power coupling control methods, the device for implementing the method
Bi-motor keeps off dynamic coupling devices, including vehicle acceleration control flow and vehicle braking procedure control flow more without synchronous,
Using pedal state as wagon control condition, when only accelerator pedal is stepped on for vehicle accelerates pattern effective；When only braking
Pedal is stepped on, accelerator pedal and brake pedal are while step on, accelerator pedal and brake pedal be while be vehicle system when not stepping on
Dynamic model formula is effective.
The vehicle acceleration control flow is comprised the following steps：
Step one：During vehicle lay-off, the often engagement of torque couple clutch 109, brake 104 is often braked, i.e., often in torsion
Square keep off, full-vehicle control unit 7 detect vehicle accelerate pattern it is effective when, to power control unit 2 send order, dynamic Control list
First 2 controlled motor control units 18 make main drive motor 17 and the moment of torsion of time motor 16 increase, and vehicle gives it the gun；When
When speed is more than the velocity amplitude V1 for setting, the increase moment of torsion of main drive motor 17, secondary motor 16 reduces moment of torsion, and keeps its total
Moment of torsion meets the driving torque value of current demand；When the torque value of secondary motor 16 less than close to zero smaller torque value M1 when,
Can assert that time motor 16 has unloaded completions, clutch executor 102 disengages torque couple clutch 109, into hanging
Neutral.
Step 2：In hanging gear, only main drive motor 17 exports power, and vehicle is in medium speed section, main driving
Also relevant work, in middling speed, middle moment of torsion section, belongs to the high efficient district of general motor to motor 17, as velocity amplitude V2 of the speed more than setting
When, by the braked speed of brake 104 it is zero due to gear ring 106, it is zero that secondary motor 16 shuts down rotating speed, therefore clutch executor
102 direct actions engage rotating speed coupled clutch 108, and after engagement, the increase moment of torsion of secondary motor 16 sets when its moment of torsion is more than
During fixed torque value M2, you can assert that time motor 16 has been loaded successfully, brake 104 discharges, into rotating speed gear.
Step 3：When rotating speed keeps off, the moment of torsion of main drive motor 17 and time motor 16 passes through the planetary gear machine
Structure superposition output, its rotating speed can be coupled and further improved so that exporting rotating speed, as car speed continues to increase until reaching
When being limited to max. speed, i.e., travelled with max. speed.
The vehicle braking procedure control flow is comprised the following steps：
Step one：When vehicle is travelled with max. speed, rotating speed coupled clutch 108 is engaged, and brake 104 discharges, vehicle
Control unit 7 detect vehicle braking mode effectively and current vehicle speed less than setting velocity amplitude V3 when, to power control unit 2
Order is sent, the controlled motor control unit 18 of power control unit 2 makes main drive motor 17 keep current torque, secondary motor
16 carry out braking energy feedback, that is, produce negative torque, because the braking torque of secondary motor 16 is acted on, the rotating speed meeting of gear ring 106
Reduce, the rotating speed of secondary motor 16 can be reduced, and the output rotating speed of power coupler 100 can be reduced so that vehicle deceleration；When secondary
When the rotating speed of motor 16 is less than smaller value N1 close to zero, that is, assert that time motor 16 and gear ring 106 have been braked
Successful, now secondary motor 16 is cancelled braking energy feedback and is remained shut off, and brake 104 thoroughly brakes gear ring 106, this
When clutch executor 102 act and disengage rotating speed coupled clutch 108, into hanging gear.
Step 2：In hanging gear, main drive motor 17 carries out braking energy feedback, and secondary motor 16 remains shut off shape
State, car speed continues to reduce；As smaller vehicle speed value V4 of the speed less than setting, driver is carried out by full-vehicle control unit 7
Braking intention judges, if it is determined that driver's driving intention is vehicle lay-off, is then sent to power control unit 2 and ordered so that be main
Motor 17 proceeds braking energy feedback, and secondary motor 16 still remains shut off state, and remaining executing agency is not carried out
Any operation, car speed continues to be decreased to vehicle lay-off, and the now action of clutch executor 102 makes torque couple clutch 109
Engagement, into moment of torsion gear；If it is determined that driver's driving intention is to run at a low speed, then the action of clutch executor 102 makes torque couple
Clutch 109 is engaged, and into moment of torsion gear, main drive motor 17 and time motor 16 carry out braking energy feedback, vehicle speed
Degree is decreased to vehicle lay-off.
To ensure that trapezoidal jaw clutch of the present invention can be combined, it is necessary to meet following in normal range of operation
Relational expression：
In above formula：i0It is vehicle speed ratio of main reducer；
R is entire vehicle tyre rolling radius, unit：m；
K1It is torque couple gear mesh gear ratio；
K2It is planetary gears characteristic parameter；
V4The shifting points unit of moment of torsion gear is changed to by hanging gear for vehicle：km/h
VmaxIt is jaw clutch maximum engaging rotating speed, unit：r/min
It should be noted that：Only in " hanging gear " is to " moment of torsion gear " engaging process, the consideration engagement is just may require that
The problem of rotating speed, just needs to use the trapezoidal jaw clutch of " permission speed discrepancy "；But opposite side is from " hanging gear " to " rotating speed
In gear " engaging process, engaged with relative static conditions, therefore without having particular/special requirement to the jaw clutch.
I.e.：To right half part in the absence of limitation, there is limitation in only left-half with the trapezoidal jaw clutch.
Claims (10)
1. a kind of bi-motor is without synchronous many gear dynamic coupling devices, including main drive motor（17）, secondary motor（16）, power
Coupler（100）, power control unit（2）With power coupling control unit（10）, main drive motor（17）Output end and time
Motor（16）Output end respectively with power coupler（100）Input be connected, power control unit（2）Respectively with
Main drive motor（17）Output end, secondary motor（16）Output end and power coupler（100）Output end is connected, its feature
It is to cancel mechanical synchronization device and electric machine speed regulation control unit.
2. bi-motor as claimed in claim 1 is without synchronous many gear dynamic coupling devices, it is characterised in that power coupler
（100）Including planetary gears, two-way trapezoidal jaw clutch, clutch executor（102）And brake（104）, it is described
Two-way trapezoidal jaw clutch and clutch executor（102）It is connected, power coupling control unit（10）Held with clutch respectively
Row device（102）And brake（104）It is connected.
3. bi-motor as claimed in claim 2 is without synchronous many gear dynamic coupling devices, it is characterised in that the planetary gear machine
Structure includes planet carrier（105）, sun gear（103）And gear ring（106）, main drive motor（17）Output shaft and sun gear（103）
It is connected, main drive motor（17）Output shaft on be coaxially installed with torque couple little gear（101）, secondary motor（16）'s
Output end is connected with the two-way trapezoidal jaw clutch, and the two-way trapezoidal jaw clutch side is equipped with moment of torsion coupling
Close gear wheel（110）, torque couple gear wheel（110）With torque couple little gear（101）It is meshed and the ratio between the number of teeth is more than 1,
Its opposite side is equipped with gear ring meshing gear（107）, gear ring meshing gear（107）With gear ring（106）It is meshed, gear ring（106）On
Equipped with brake（104）.
4. bi-motor as claimed in claim 3 is without synchronous many gear dynamic coupling devices, it is characterised in that including the main deceleration of vehicle
Device（19）, the output end and vehicle main retarder of the planetary gears（19）Input be connected.
5. bi-motor as claimed in claim 3 is without synchronous many gear dynamic coupling devices, it is characterised in that the two-way trapezoidal tooth
Embedded-type clutch includes rotating speed coupled clutch（108）With torque couple clutch（109）.
6. bi-motor as claimed in claim 2 is without synchronous many gear dynamic coupling devices, it is characterised in that clutch executor
（102）Power source using any one in electromagnetic absorption joint type, motor-driven, hydraulic driven and air pressure driven type.
7. bi-motor as claimed in claim 1 is without synchronous many gear dynamic coupling devices, it is characterised in that power control unit
（2）In main drive motor（17）Output end, secondary motor（16）Output end and power coupler（100）Output end is respectively provided with
There is main drive motor OSS（8）, secondary driving motor output shaft speed probe（15）With coupler output shaft
Speed probe（14）, the speed probe is encapsulated in the inner space of the dynamic coupling device.
8. bi-motor as claimed in claim 1 is without synchronous many gear dynamic coupling devices, it is characterised in that including full-vehicle control list
Unit（7）And motor control unit（18）, power control unit（2）Respectively with full-vehicle control unit（7）And motor control unit
（18）It is connected.
9. bi-motor as claimed in claim 8 is without synchronous many gear dynamic coupling devices, it is characterised in that logical including vehicle CAN
News network（5）, internal CAN communication network（4）, battery management system（3）, Meter Control Unit（6）, vehicle other modules（9）,
Internal CAN communication network（4）The dynamic control unit of node of access（2）, motor control unit（18）, power coupling control it is single
Unit（10）With full-vehicle control unit（7）, wherein power control unit（2）It is internal CAN communication network（4）Major control section
Point；Vehicle CAN communication network（5）The node of access has full-vehicle control unit（7）, battery management system（3）, Meter Control Unit
（6）With other modules of vehicle（9）.
10. a kind of bi-motor is without much more synchronous gear power coupling control methods, implement the device of the method include as claim 1 to
Any one of 9 bi-motor was braked without synchronous many gear dynamic coupling devices, including vehicle acceleration control flow and vehicle
Process control flow, it is characterised in that using pedal state as wagon control condition, when only accelerator pedal is stepped on for vehicle adds
Fast mode is effective；Step on when only brake pedal, accelerator pedal and brake pedal at the same step on, accelerator pedal and brake pedal it is same
When to be vehicle braking mode when not stepping on effective.
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| CN117905855A (en) * | 2024-01-16 | 2024-04-19 | 重庆大学 | Pure electric transmission system with multiple modes and multiple gears |
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