CN110155030A - Two gear transmission control systems of one kind and method - Google Patents
Two gear transmission control systems of one kind and method Download PDFInfo
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- CN110155030A CN110155030A CN201910452567.5A CN201910452567A CN110155030A CN 110155030 A CN110155030 A CN 110155030A CN 201910452567 A CN201910452567 A CN 201910452567A CN 110155030 A CN110155030 A CN 110155030A
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- electric machine
- entire car
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 57
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- 230000005611 electricity Effects 0.000 claims description 5
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- 230000008569 process Effects 0.000 description 23
- 238000012544 monitoring process Methods 0.000 description 9
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- 235000009566 rice Nutrition 0.000 description 4
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Transmission Device (AREA)
- Hybrid Electric Vehicles (AREA)
- Structure Of Transmissions (AREA)
Abstract
The embodiment of the invention provides a kind of two gear transmission control systems and methods, it is related to technical field of new energy, system includes entire car controller, electric machine controller and gearbox control, shift trigger condition is judged using entire car controller and determines rotating speed of target, torque unloading is carried out using electric machine controller and electric machine speed regulation operates, it carries out plucking gear and operation of putting into gear using gearbox control, pass through entire car controller, interaction and coordinated between electric machine controller and gearbox control three, it allows the vehicle to also be able to achieve after saving clutch smooth and rapidly shift gears, change rotating ratio according to vehicle actual condition, improve the operational efficiency of driving motor of pure electric automobile.
Description
Technical field
The invention belongs to technical field of new energy, and in particular to two gear transmission control systems of one kind and side
Method.
Background technique
It is influenced by energy crisis in global range and environmental pollution, each state is all constantly promoting new-energy automobile industry
Development, especially in nearly 10 years, pure electric automobile and hybrid vehicle have been achieved for significant progress, and product and technology are all
It is progressive and perfect constantly.
For pure electric automobile is compared to traditional combustion engine automobile, motor has more satisfactory torque-speed characteristic
Curve, therefore numerous pure electric vehicle vehicles both domestic and external simplify complete vehicle structure, are equipped with fixed rotating speed ratio to reduce cost
Speed change gear.
During realizing the embodiment of the present invention, inventor find the relevant technologies the prior art has at least the following problems:
It is equipped with the pure electric automobile of the speed change gear of fixed rotating speed ratio, it can not be according to the difference (example of actual condition
As heavy load accelerates, high speed is continued a journey) change rotating ratio, therefore cause the motor operation inefficient.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of two gear transmission control systems and method, it being capable of basis
The different of actual condition change rotating ratio, improve motor operation efficiency.
Specifically, including technical solution below:
On the one hand, the present invention provides a kind of two gear transmission control systems, which includes entire car controller, electricity
Machine controller and gearbox control, in which:
The entire car controller is used for when judging that the vehicle meets shift trigger condition according to vehicle's current condition, to this
Electric machine controller sends first and subtracts torsion instruction.
The electric machine controller be used for receive this first subtract torsion instruction when, control driving motor reduce torque simultaneously compares in real time
Compared with the torque and the first torque threshold of the driving motor.
The electric machine controller is used for when the torque of the driving motor is decreased to be equal to first torque threshold, to the vehicle
Controller sends first and subtracts torsion completion signal.
The entire car controller be used for receive this first subtract torsion complete signal when, to the gearbox control transmission pluck gear
Instruction.
The gearbox control is used for when receiving this and plucking gear instruction, and control synchronizer combined cover is from original gear ring to sky
File location is mobile.
The gearbox control is used for when the synchronizer combined cover is moved to neutral position, is sent to the entire car controller
It plucks gear and completes signal.
The entire car controller be used for receive this pluck gear complete signal when, to the electric machine controller send speed-regulating instruction.
The electric machine controller is used for when receiving the speed-regulating instruction, by the revolving speed of the driving motor to rotating speed of target tune
It is whole.
The electric machine controller is less than rotational speed difference threshold for the difference between the revolving speed of the driving motor and the rotating speed of target
When value, speed regulation is sent to the entire car controller and completes signal.
The entire car controller is used to send second when receiving speed regulation completion signal to the gearbox control and subtract torsion
Instruction.
The electric machine controller be used for receive this second subtract torsion instruction when, control driving motor reduce torque simultaneously compares in real time
Compared with the torque and the second torque threshold of the driving motor.
The electric machine controller is used for when the torque of the driving motor is decreased to be equal to second torque threshold, to the vehicle
Controller sends second and subtracts torsion completion signal.
The entire car controller be used for receive this second subtract torsion complete signal when, to the gearbox control send synchronize
Instruction.
The gearbox control is used for when receiving the synchronic command, is controlled the synchronizer combined cover and is moved to target gear ring
It is dynamic, and when the revolving speed of the synchronizer combined cover is synchronous with the revolving speed of the target gear ring, control the synchronizer combined cover and the mesh
Mark gear ring engagement.
Selectively, which includes brake pedal aperture, gas pedal aperture and current gear, this is current
Gear includes high-grade and low grade, the entire car controller are also used to execute at least one of following three:
When the brake pedal aperture less than the second aperture threshold value and is deserved less than the first aperture threshold value, the gas pedal aperture
When preceding gear is low-grade, determine that the vehicle meets shift trigger condition.
When the brake pedal aperture is greater than the first aperture threshold value, the gas pedal aperture less than the second aperture threshold value and is somebody's turn to do
When current gear is that these three high-grade conditions meet simultaneously, determine that the vehicle meets shift trigger condition.
When the brake pedal aperture is greater than the second aperture threshold value less than the first aperture threshold value, the gas pedal aperture and should
When current gear is that these three high-grade conditions meet simultaneously, determine that the vehicle meets shift trigger condition.
Selectively, which further includes current vehicle speed,
The gearbox control is also used to when the synchronizer combined cover is engaged with the target gear ring, to the entire car controller
Transmission synchronously completes signal.
The entire car controller is also used to when receiving this and synchronously completing signal, is sent torque to the electric machine controller and is restored
Instruction.
The electric machine controller is also used to receive the entire car controller according to the throttle when receiving torque recovery instruction
The target torque that pedal opening, the current gear and the current vehicle speed are determined, and by adjusting flowing through the driving motor
The torque of the driving motor is adjusted to the target torque by size of current.
Selectively, which corresponds to target gear, which is also used to:
When receiving the speed-regulating instruction, the entire car controller is received according to the target gear corresponding with the target gear ring
And calculated rotating speed of target of the current vehicle speed.
According to the rotating speed of target, by adjusting the size of current for flowing through the driving motor, by the revolving speed of the driving motor to
Rotating speed of target adjustment.
Selectively, which is also used to:
Receive this first subtract torsion instruction or second subtract torsion instruction when, flow through the electric current of the driving motor by reducing,
It controls the driving motor and reduces torque.
Selectively, the original gear ring and the target gear ring are located at the two sides of the synchronizer combined cover.
Selectively, which is also used to:
Receive this pluck gear instruction when, the selector fork of synchronizer is stirred with the first gear shifting force, the selector fork push
The synchronizer combined cover is mobile from original gear ring to neutral position.
Selectively, which is also used to:
When the revolving speed of the synchronizer combined cover is synchronous with the revolving speed of the target gear ring, synchronizer is stirred with the second gear shifting force
Selector fork, which pushes the synchronizer combined cover mobile to the target gear ring, until the synchronizer combined cover
Spline tooth is meshed with the spline tooth of the target gear ring.
Selectively, which is greater than second gear shifting force.
On the other hand, the present invention provides a kind of two gear transmission control methods, method includes:
The entire car controller is when judging that the vehicle meets shift trigger condition according to vehicle's current condition, to the motor
Controller sends first and subtracts torsion instruction.
The electric machine controller receive this first subtract torsion instruction when, control driving motor reduce torque simultaneously compare this in real time
The torque of driving motor and the first torque threshold.
The electric machine controller is when the torque of the driving motor is decreased to be equal to first torque threshold, to the full-vehicle control
Device sends first and subtracts torsion completion signal.
The entire car controller receive this first subtract torsion and complete signal when, pluck gear to gearbox control transmission and refer to
It enables.
For the gearbox control when receiving this and plucking gear instruction, control synchronizer combined cover is from original gear ring to neutral position
Set movement.
The gearbox control plucks gear when the synchronizer combined cover is moved to neutral position, to entire car controller transmission
Complete signal.
The entire car controller receive this pluck gear complete signal when, to the electric machine controller send speed-regulating instruction.
The electric machine controller is adjusted when receiving the speed-regulating instruction, by the revolving speed of the driving motor to rotating speed of target.
When difference of the electric machine controller between the revolving speed of the driving motor and the rotating speed of target is less than rotational speed difference threshold value,
Speed regulation, which is sent, to the entire car controller completes signal.
The entire car controller subtracts torsion to gearbox control transmission second and refers to when receiving speed regulation completion signal
It enables.
The electric machine controller receive this second subtract torsion instruction when, control driving motor reduce torque simultaneously compare this in real time
The torque of driving motor and the second torque threshold.
The electric machine controller is when the torque of the driving motor is decreased to be equal to second torque threshold, to the full-vehicle control
Device sends second and subtracts torsion completion signal.
The entire car controller receive this second subtract torsion and complete signal when, synchronize and refer to gearbox control transmission
It enables.
The gearbox control controls the synchronizer combined cover and moves to target gear ring when receiving the synchronic command,
And when the revolving speed of the synchronizer combined cover is synchronous with the revolving speed of the target gear ring, the synchronizer combined cover and the target teeth are controlled
Circle engagement.
The beneficial effect of technical solution provided in an embodiment of the present invention includes at least:
It include full-vehicle control the embodiment of the invention provides a kind of two gear transmission control systems and method, the system
Device, electric machine controller and gearbox control, in which: the entire car controller is for judging this according to vehicle's current condition
When vehicle meets shift trigger condition, first is sent to the electric machine controller and subtracts torsion instruction；The electric machine controller is for receiving
To this first subtract torsion instruction when, control driving motor reduces torque and compares the torque and the first torque threshold of the driving motor in real time
Value；The electric machine controller is used for when the torque of the driving motor is decreased to be equal to first torque threshold, to the full-vehicle control
Device sends first and subtracts torsion completion signal；The entire car controller be used for receive this first subtract torsion complete signal when, to the speed change
Gear instruction is plucked in the transmission of case controller；The gearbox control be used for receive this pluck gear instruction when, control synchronizer combined cover
It is mobile from original gear ring to neutral position；The gearbox control is used for when the synchronizer combined cover is moved to neutral position,
Gear, which is plucked, to entire car controller transmission completes signal；The entire car controller be used for receive this pluck gear complete signal when, to this
Electric machine controller sends speed-regulating instruction；The electric machine controller is used for when receiving the speed-regulating instruction, by turning for the driving motor
Speed is adjusted to rotating speed of target；Difference of the electric machine controller between the revolving speed of the driving motor and the rotating speed of target is less than
When rotational speed difference threshold value, speed regulation is sent to the entire car controller and completes signal；The entire car controller is used for receive the speed regulation complete
When at signal, second is sent to the gearbox control and subtracts torsion instruction；The electric machine controller is used to second subtract torsion receiving this
When instruction, control driving motor reduces torque and compares the torque and the second torque threshold of the driving motor in real time；The motor control
Device processed is used to send second when the torque of the driving motor is decreased to be equal to second torque threshold to the entire car controller and subtract
It turns round and completes signal；The entire car controller be used for receive this second subtract torsion complete signal when, to the gearbox control send
Synchronic command；The gearbox control is used for when receiving the synchronic command, controls the synchronizer combined cover to target gear ring
It is mobile, and when the revolving speed of the synchronizer combined cover is synchronous with the revolving speed of the target gear ring, it controls the synchronizer combined cover and is somebody's turn to do
The engagement of target gear ring.Due to carrying out moment of torsion control, benefit using electric machine controller using entire car controller judgement shift trigger condition
Gear shift operation is carried out with gearbox control, so that gearbox can change rotating ratio according to the different of actual condition, is mentioned
The high operational efficiency of driving motor of pure electric automobile.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Attached drawing 1 is the structure chart for the two gear transmission control systems that the embodiment of the present invention one provides；
Attached drawing 2 is the structure chart of synchronizer in two gear transmissions control system provided in an embodiment of the present invention；
Attached drawing 3 is the flow chart of two gear transmissions control method provided by Embodiment 2 of the present invention.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
Embodiment one
A kind of two gear transmission control systems are present embodiments provided, as shown in Figure 1, system includes entire car controller
101, electric machine controller 102 and gearbox control 103, in which:
The maximum difference of automatic transmission and manual transmission is exactly that automatic transmission can be according to vehicle's current condition certainly
It is dynamic to judge whether vehicle meets shift trigger condition, and gear shifting action is executed automatically when meeting and shifting gears trigger condition, and it is manual
Speed changer needs driver voluntarily to judge whether vehicle meets shift trigger condition and hold manually when meeting and shifting gears trigger condition
Row gear shifting action.
Wherein judging automatically vehicle whether to meet shift trigger condition this operation according to vehicle's current condition is by vehicle
Controller 101 is performed.
Entire car controller 101 refers to VCU (Vehicle Control Unit).
In the present embodiment, vehicle's current condition includes brake pedal aperture, gas pedal aperture and current gear, currently
Gear includes high-grade and low grade, entire car controller 101 are also used to execute at least one of following three:
When brake pedal aperture less than the first aperture threshold value, gas pedal aperture less than the second aperture threshold value and current gear
When for low grade, determine that vehicle meets shift trigger condition.It is understood that when brake pedal aperture is less than the first aperture threshold value
And gas pedal aperture less than the second aperture threshold value when, then mean that vehicle does not accelerate or deceleration demand at this time, in even
Fast cruising condition, vehicle exports torque of less demanding at this time, and speed is generally higher, in this state, in order to improve vehicle
Electric efficiency, then should select top grade.If current gear is low grade, judge that vehicle should upshift, meets shift touching
Clockwork spring part.
When brake pedal aperture is greater than the first aperture threshold value, gas pedal aperture less than the second aperture threshold value and current shelves
When position meets simultaneously for these three high-grade conditions, determine that vehicle meets shift trigger condition.It is understood that working as brake pedal
When aperture is greater than the first aperture threshold value and gas pedal aperture less than the second aperture threshold value, then mean that vehicle has deceleration to need at this time
It asks, in order to make full use of low-grade transmission ratio, the rotational energy of wheel is enable more efficiently reversely to turn by driving motor
The electric energy of power battery is turned to, stores excess energy, and assist vehicle deceleration, vehicle should select low grade in this state.
If current gear is top grade, judge that vehicle should downshift, meets shift trigger condition.
When brake pedal aperture is greater than the second aperture threshold value and current shelves less than the first aperture threshold value, gas pedal aperture
When position meets simultaneously for these three high-grade conditions, determine that vehicle meets shift trigger condition.It is understood that brake pedal is opened
Degree is less than the first aperture threshold value and gas pedal aperture is greater than the second aperture threshold value, then means that vehicle has acceleration demand at this time,
In order to make full use of low-grade transmission ratio, so that the output torque of driving motor is carried out torque by low-grade transmission ratio and put
Greatly, output revolving speed is reduced, the torque for being transmitted to wheel is improved, so that vehicle is possessed stronger acceleration capacity, in this state vehicle
It should select low grade.If current gear is top grade, judge that vehicle should downshift, meets shift trigger condition.
After entire car controller 101 judges that vehicle meets shift trigger condition according to three cases above, no matter upshift
Or it downshifts, the first step requires control speed changer and carries out plucking neutral gear, that is, enters the intermediate state between gear.And work as vehicle
It is all directly to be carried out with gear between the output shaft and gearbox and gearbox and axle of engine when hanging up a certain gear
Transmission, biggish active force is born between the gear in gearbox, at this time if do not cut off between engine and gearbox
Connection, directly control gearbox and pluck gear, it is likely that pluck gear during due to rotational speed difference is excessive and occur beat tooth the case where,
Aggravate the gear wear of gearbox.In traditional internal-combustion engines vehicle, engine is typically cut off using clutch and is become
Connection between fast case reduces the active force between gear, smoothly plucks gear to realize.When the separation of the clutch-plate of clutch,
Engine is just disconnected connection between gearbox, and stress is smaller between gearbox gear at this time, also without potential revolving speed
Difference, controls selector fork in this case, then may be implemented smoothly to pluck gear.The targeted new energy vapour of the embodiment of the present invention
Vehicle be also similarly, will be during plucking neutral gear due to revolving speed if driving motor still exports high torque when plucking gear
Difference and occur beat tooth situation, and in the embodiment of the present invention using electric machine controller 102 to driving motor progress torque unloading side
Formula smoothly plucks gear to realize to substitute the effect of clutch.And this add-on parts of clutch are eliminated, it improves whole
The reliability of a gearbox, reduces failure rate.
Therefore, entire car controller 101 is used for when judging that vehicle meets shift trigger condition according to vehicle's current condition,
First, which is sent, to electric machine controller 102 subtracts torsion instruction.
Electric machine controller refers to MCU (Motor Control Unit).
Electric machine controller 102 be used for receive first subtract torsion instruction when, control driving motor reduce torque simultaneously compares in real time
Compared with the torque and the first torque threshold of driving motor.
In the present embodiment, the mode of the reduction of electric machine controller 102 torque is specific as follows:
Electric machine controller 102 is also used to: when receiving first and subtracting torsion instruction, flowing through the electricity of driving motor by reducing
Stream, control driving motor reduce torque.The operation for wherein reducing the electric current for flowing through driving motor can use electric machine controller 102
In power regulation module execute.
First torque threshold, which can be, to be preset by developer and is stored in electric machine controller 102, can be with
It is to be generated by entire car controller 101 and be embedded in first in real time according to vehicle's current condition to subtract in torsion instruction.
Electric machine controller 102 can receive first subtract torsion instruction when, open first monitoring window, first monitoring window
For comparing the size relation between the torque of driving motor and the first torque threshold in real time.
Electric machine controller 102 is used for when the torque of driving motor is decreased to be equal to the first torque threshold, to full-vehicle control
Device 101 sends first and subtracts torsion completion signal.
It is understood that the first torque threshold can be greater than 0, such as it can be 2N*m (N*m refer to ox rice, i.e. torque
Unit), i.e., it is without unloading the output torque of motor completely, i.e., executable to pluck gear process, reduce torque ripple range, mention
The ride comfort of shift process is risen.
Entire car controller 101 be used for receive first subtract torsion complete signal when, to gearbox control 103 transmission pluck gear
Instruction.
Gearbox control refers to TCU (Transmission Control Unit).
Gearbox control 103 be used for receive pluck gear instruction when, control synchronizer combined cover is from original gear ring to sky
File location is mobile.
In the present embodiment, during plucking gear, gearbox control 103 is also used to:
Receive pluck gear instruction when, stir the selector fork of synchronizer with the first gear shifting force, selector fork, which pushes, to be synchronized
Device combined cover is mobile from original gear ring to neutral position.
Original gear ring is to censure the gear ring being meshed before gear with synchronizer combined cover, that is, the original gear institute before shifting gears
Corresponding gear ring.
The gear ring for completing to be meshed after shift with synchronizer combined cover is known as target gear ring, i.e., the mesh being switched to needs
Mark the corresponding gear ring of gear.
In the present embodiment, as shown in Fig. 2, original gear ring and target gear ring are located at the two sides of synchronizer combined cover,
The gear ring engaged can be determined by controlling the moving direction of synchronizer combined cover, that is, determine the gear being linked into.In Fig. 2
Original gear ring can be 1 grade of gear ring, target gear ring can be 2 grades of gear rings or original gear ring can be 2 grades of gear rings, target
Gear ring can be 1 grade of gear ring.
And original gear ring and target gear ring are separately positioned on to the two sides of synchronizer combined cover, rather than it is arranged two together
It walks device and saves space but also the overall structure of gearbox is more compact, alleviate light weight.
The concrete principle of synchronizer is introduced below.
Specifically, in synchronizer, a gear ring includes first ring gear and second ring gear, i.e., in the present embodiment
Synchronizer include two the first ring gears and two the second ring gears, one of them first ring gear and second ring gear are one group,
To one gear ring of every group of formation.Synchronizer further includes a splined hub, and splined hub is fixedly connected with motor output shaft.
Synchronizer is during switching to synchronous regime from asynchronous regime, sky of the control synchronizer combined cover from centre
Gear is set to a certain target gear ring and is slided, and keeps being meshed with splined hub in sliding process, and synchronizer combined cover pushes mesh
The second ring gear in mark gear ring is slided to the first ring gear, makes the circular conical surface and the first ring gear outer wall of the second ring gear inner wall setting
The circular conical surface mutual extrusion friction of setting reduces the rotational speed difference of the first ring gear and the second ring gear, when rotational speed difference is decreased to zero, institute
It states synchronizer combined cover to continue to slide to target gear ring, spline and the first ring gear that synchronizer combined cover inner wall is arranged and the
The spline of two ring gear outer walls setting is meshed, to realize synchronization.
Gearbox control 103 is used for when synchronizer combined cover is moved to neutral position, is sent to entire car controller 101
It plucks gear and completes signal.
When synchronizer combined cover is moved to neutral position, synchronizer combined cover is not engaged with any one gear ring.
Rotational speed difference when putting into gear to reduce, it is also necessary to carry out speed regulation operation.
Entire car controller 101 be used for receive pluck gear complete signal when, to electric machine controller 102 send speed-regulating instruction.
Electric machine controller 102 is used for when receiving speed-regulating instruction, and the revolving speed of driving motor is adjusted to rotating speed of target.
In the present embodiment, vehicle's current condition further includes current vehicle speed, and target gear ring corresponds to target gear, adjusting the speed
In the process, for the rotating speed of target being accurately determined as when driving motor speed regulation, to reduce driving motor and target gear ring as far as possible
Between rotational speed difference, electric machine controller 102 is also used to:
When receiving speed-regulating instruction, receive entire car controller 101 according to target gear corresponding with target gear ring and
The calculated rotating speed of target of current vehicle speed.
It is understood that current vehicle speed is higher, rotating speed of target is higher；Simultaneously because the transmission ratio of two gears is not
Together, target gear is lower, and rotating speed of target is higher.
According to rotating speed of target, by adjusting the size of current for flowing through driving motor, the revolving speed of driving motor is turned to target
Velocity modulation is whole.
The operation for the size of current that driving motor is flowed through in adjustment can use the power regulation module in electric machine controller 102
To execute.
Electric machine controller 102 is less than rotational speed difference threshold value for the difference between the revolving speed and rotating speed of target of driving motor
When, speed regulation, which is sent, to entire car controller 101 completes signal.
Entire car controller 101 is used to send second when receiving speed regulation completion signal to gearbox control 103 and subtract torsion
Instruction.
Electric machine controller 102 be used for receive second subtract torsion instruction when, control driving motor reduce torque simultaneously compares in real time
Compared with the torque and the second torque threshold of driving motor.
The process for subtracting torsion herein and above-mentioned electric machine controller 102 subtract torsion process class when turning round instruction receiving first and subtract
Seemingly, electric machine controller 102 is also used to: when receiving second and subtracting torsion instruction, flowing through the electric current of driving motor by reducing, control
Driving motor reduces torque.The operation for the electric current that wherein driving motor is flowed through in reduction can use the function in electric machine controller 102
Rate adjusts module to execute.
Second torque threshold, which can be, to be preset by developer and is stored in electric machine controller 102, can be with
It is to be generated by entire car controller 101 and be embedded in second in real time according to vehicle's current condition to subtract in torsion instruction.
Electric machine controller 102 can receive second subtract torsion instruction when, open second monitoring window, second monitoring window
For comparing the size relation between the torque of driving motor and the second torque threshold in real time.
Electric machine controller 102 is used for when the torque of driving motor is decreased to be equal to the second torque threshold, to full-vehicle control
Device 101 sends second and subtracts torsion completion signal.
It is understood that the second torque threshold can be greater than 0, such as it can be 2N*m (N*m refer to ox rice, i.e. torque
Unit), i.e., it is without unloading the output torque of motor completely, i.e., executable to pluck gear process, reduce torque ripple range, mention
The ride comfort of shift process is risen.
Entire car controller 101 be used for receive second subtract torsion complete signal when, to gearbox control 103 send synchronize
Instruction.
Gearbox control 103 is used for when receiving synchronic command, and control synchronizer combined cover is mobile to target gear ring,
And when the revolving speed of synchronizer combined cover is synchronous with the revolving speed of target gear ring, control synchronizer combined cover is engaged with target gear ring.
In the present embodiment, gearbox control 103 is also used in the revolving speed of synchronizer combined cover and turning for target gear ring
When speed is synchronous, the selector fork of synchronizer is stirred with the second gear shifting force, selector fork pushes synchronizer combined cover to target gear ring
It is mobile, until the spline tooth of synchronizer combined cover is meshed with the spline tooth of target gear ring.
It is understood that when plucking gear due to the presence of potential rotational speed difference, it is easy to cause the case where beating tooth, therefore need
Synchronizer combined cover is controlled with biggish power, to control synchronizer combined cover with faster movement speed, pluck gear to shorten
Process, then shortening may cause the time for beating tooth, avoid the unnecessary abrasion of gearbox to the full extent.And when into gear,
In order to avoid generating biggish impact force between the spline of synchronizer combined cover and the chamfering of target gear ring, then need with lesser
Power controls synchronizer combined cover, the impact and abrasion generated when reducing synchro-meshing to gear ring.It is accordingly used in stirring synchronizer
Selector fork to push synchronizer combined cover to be arranged to big from original gear ring to the first mobile gear shifting force of neutral position
In second gear shifting force of the selector fork for stirring synchronizer to push synchronizer combined cover mobile to target gear ring, i.e., the
One gear shifting force is greater than the second gear shifting force, so that improving shift speed under the premise of guaranteeing gearbox life and shift being flat
It is pliable.
And after synchronizer combined cover is engaged with target gear ring, gearbox control 103 can reduce gear shifting force, to avoid
The displacement of synchronizer combined cover is excessive.
Gearbox control 103 is also used to when synchronizer combined cover is engaged with target gear ring, is sent out to entire car controller 101
It send and synchronously completes signal.
Entire car controller 101 be also used to receive synchronously complete signal when, to electric machine controller 102 send torque restore
Instruction.
In the present embodiment, after the completion of gear shift operation, so that it may so that vehicle restores nominal situation, according to the real-time of driver
Torque demand controls driving motor output torque, and implementation is as follows:
Electric machine controller 102 is also used to receive entire car controller 101 when receiving torque recovery instruction and stepped on according to throttle
The target torque that plate aperture, current gear and current vehicle speed are determined, and by adjusting the size of current for flowing through driving motor,
The torque of driving motor is adjusted to target torque.
As a kind of alternative embodiment, entire car controller 101 is also used to after receiving and synchronously completing signal, and monitoring is practical
Torque and the upper torque of expected wheel on wheel, if after the first preset time, between the torque and target torque of driving motor
Difference be still greater than predetermined torque difference threshold, then determine that this time shift does not succeed, that is, be possible to occur synchronizer not and
The case where target gear ring successfully engages, entire car controller 101 subtracts torsion instruction to the transmission of electric machine controller 102 first again at this time,
A shift process, but target shift invariant position are re-executed, i.e., the target gear selected before shift failure is exactly to re-execute
Target gear when shift process.Wherein, torque can be obtained by sensor in actual wheel, it is contemplated that torque can use on wheel
The gear ratio calculation of motor output speeds and target gear obtains.
In the present embodiment, it is utilized between entire car controller 101, electric machine controller 102 and gearbox control 103
CAN or LIN bus is attached.
System can also include battery management system, power battery, main reducing gear and differential mechanism.
The beneficial effect of technical solution provided in an embodiment of the present invention includes at least:
The embodiment of the invention provides a kind of two gear transmission control systems, system includes entire car controller 101, electricity
Machine controller 102 and gearbox control 103, in which: entire car controller 101 according to vehicle's current condition for judging
When vehicle meets shift trigger condition, first is sent to electric machine controller 102 and subtracts torsion instruction, it can using entire car controller 101
Automatically and accurately judge whether vehicle meets trigger condition；Electric machine controller 102 be used for receive first subtract torsion instruction when,
Control driving motor reduces torque and compares the torque and the first torque threshold of driving motor in real time；Electric machine controller 102 is used for
When the torque of driving motor is decreased to be equal to the first torque threshold, first is sent to entire car controller 101 and subtracts torsion completion signal；
Entire car controller 101 be used for receive first subtract torsion complete signal when, to gearbox control 103 transmission pluck gear instruction, by
It has carried out subtracting torsion in front of plucking gear, has beaten tooth situation so as to avoid when plucking gear, improve the ride comfort of shift；Gearbox control
Device 103 processed be used for receive pluck gear instruction when, control synchronizer combined cover is mobile from original gear ring to neutral position；Gearbox
Controller 103 is used for when synchronizer combined cover is moved to neutral position, is plucked gear to the transmission of entire car controller 101 and is completed signal；
Entire car controller 101 be used for receive pluck gear complete signal when, to electric machine controller 102 send speed-regulating instruction；Motor control
Device 102 is used for when receiving speed-regulating instruction, the revolving speed of driving motor is adjusted to rotating speed of target, to reduce the revolving speed between gear
Difference reduces impact when putting into gear between gear；Electric machine controller 102 is used between the revolving speed and rotating speed of target of driving motor
When difference is less than rotational speed difference threshold value, speed regulation is sent to entire car controller 101 and completes signal；Entire car controller 101 is for receiving
When completing signal to speed regulation, second is sent to gearbox control 103 and subtracts torsion instruction；Electric machine controller 102 is for receiving
Second when subtracting torsion instruction, and control driving motor reduces torque and compares the torque and the second torque threshold of driving motor in real time,
Once subtracted torsion again after the completion of speed regulation, further increases ride comfort when putting into gear；Electric machine controller 102 is used in driving motor
Torque be decreased to be equal to the second torque threshold when, to entire car controller 101 send second subtract torsion complete signal；Entire car controller
101 for receive second subtract torsion complete signal when, to gearbox control 103 send synchronic command；Gearbox control
103 for when receiving synchronic command, control synchronizer combined cover to turn to the movement of target gear ring, and in synchronizer combined cover
When speed is synchronous with the revolving speed of target gear ring, control synchronizer combined cover is engaged with target gear ring, completes entire shift process.Due to
Shift trigger condition is judged using entire car controller 101 and determines rotating speed of target, carries out torque control using electric machine controller 102
System carries out gear shift operation, entire car controller 101, electric machine controller 102 and gearbox control using gearbox control 103
Mutual coordinated between 103 three of device is allowed the vehicle to also be able to achieve after saving clutch smooth and rapidly be changed
Gear changes rotating ratio according to vehicle actual condition, improves the operational efficiency of new energy vehicle driving motor.
Embodiment two
On the other hand, the embodiment of the invention provides a kind of two gear transmission control methods, as shown in figure 3, including
Step S201, S202, S203, S204, S205, S206, S207, S208, S209, S210, S211, S212, S213 and S214,
Wherein:
The maximum difference of automatic transmission and manual transmission is exactly that automatic transmission can be according to vehicle's current condition certainly
It is dynamic to judge whether vehicle meets shift trigger condition, and gear shifting action is executed automatically when meeting and shifting gears trigger condition, and it is manual
Speed changer needs driver voluntarily to judge whether vehicle meets shift trigger condition and hold manually when meeting and shifting gears trigger condition
Row gear shifting action.
Wherein judging automatically vehicle whether to meet shift trigger condition this operation according to vehicle's current condition is by vehicle
Controller is performed.
In the present embodiment, vehicle's current condition includes brake pedal aperture, gas pedal aperture and current gear, currently
Gear includes high-grade and low-grade, method further include:
Entire car controller executes at least one of following three:
When brake pedal aperture less than the first aperture threshold value, gas pedal aperture less than the second aperture threshold value and current gear
When for low grade, determine that vehicle meets shift trigger condition.It is understood that when brake pedal aperture is less than the first aperture threshold value
And gas pedal aperture less than the second aperture threshold value when, then mean that vehicle does not accelerate or deceleration demand at this time, in even
Fast cruising condition, vehicle exports torque of less demanding at this time, and speed is generally higher, in this state, in order to improve vehicle
Electric efficiency, then should select top grade.If current gear is low grade, judge that vehicle should upshift, meets shift touching
Clockwork spring part.
When brake pedal aperture is greater than the first aperture threshold value, gas pedal aperture less than the second aperture threshold value and current shelves
When position meets simultaneously for these three high-grade conditions, determine that vehicle meets shift trigger condition.It is understood that working as brake pedal
When aperture is greater than the first aperture threshold value and gas pedal aperture less than the second aperture threshold value, then mean that vehicle has deceleration to need at this time
It asks, in order to make full use of low-grade transmission ratio, the rotational energy of wheel is enable more efficiently reversely to turn by driving motor
The electric energy of power battery is turned to, stores excess energy, and assist vehicle deceleration, vehicle should select low grade in this state.
If current gear is top grade, judge that vehicle should downshift, meets shift trigger condition.
When brake pedal aperture is greater than the second aperture threshold value and current shelves less than the first aperture threshold value, gas pedal aperture
When position meets simultaneously for these three high-grade conditions, determine that vehicle meets shift trigger condition.It is understood that brake pedal is opened
Degree is less than the first aperture threshold value and gas pedal aperture is greater than the second aperture threshold value, then means that vehicle has acceleration demand at this time,
In order to make full use of low-grade transmission ratio, so that the output torque of driving motor is carried out torque by low-grade transmission ratio and put
Greatly, output revolving speed is reduced, the torque for being transmitted to wheel is improved, so that vehicle is possessed stronger acceleration capacity, in this state vehicle
It should select low grade.If current gear is top grade, judge that vehicle should downshift, meets shift trigger condition.
When entire car controller according to three cases above judge vehicle meet shift trigger condition after, no matter upshift or
Downshift, the first step require control speed changer and carry out plucking neutral gear, that is, enter the intermediate state between gear.And when vehicle is hung
It is all directly to be driven with gear between the output shaft and gearbox and gearbox and axle of engine when upper a certain gear
, biggish active force is born between the gear in gearbox, at this time if not cutting off the company between engine and gearbox
It connects, directly controls gearbox and pluck gear, it is likely that the case where beating tooth occur since rotational speed difference is excessive during plucking gear, aggravation
The gear wear of gearbox.In traditional internal-combustion engines vehicle, engine and gearbox typically are cut off using clutch
Between connection, reduce gear between active force, with realize smoothly pluck gear.When the separation of the clutch-plate of clutch, start
Machine is just disconnected connection between gearbox, and stress is smaller between gearbox gear at this time, also without potential rotational speed difference,
In this case selector fork is controlled, then may be implemented smoothly to pluck gear.The targeted new-energy automobile of the embodiment of the present invention
Be similarly, if driving motor still exports high torque when plucking gear, will during plucking neutral gear due to rotational speed difference and
Tooth situation is beaten in appearance, and in the embodiment of the present invention in such a way that electric machine controller is to driving motor progress torque unloading, to replace
For the effect of clutch, gear is smoothly plucked to realize.And this add-on parts of clutch are eliminated, improve entire gearbox
Reliability, reduce failure rate.
Therefore, in step s 201, entire car controller is judging that vehicle meets shift triggering according to vehicle's current condition
When condition, first is sent to electric machine controller and subtracts torsion instruction.
In step S202, electric machine controller receive first subtract torsion instruction when, control driving motor reduce torque simultaneously
Compare the torque and the first torque threshold of driving motor in real time.
In the present embodiment, the mode of electric machine controller reduction torque is specific as follows:
Electric machine controller flows through the electric current of driving motor by reducing, control driving when receiving first and subtracting torsion instruction
Motor reduces torque.The operation for the electric current that wherein driving motor is flowed through in reduction can use the power adjustment mould in electric machine controller
Block executes.
First torque threshold, which can be, to be preset by developer and is stored in electric machine controller, can also be by
Entire car controller, which generates in real time according to vehicle's current condition and is embedded in first, to be subtracted in torsion instruction.
Electric machine controller can receive first subtract torsion instruction when, open first monitoring window, first monitoring window use
In the size relation in real time relatively between the torque and the first torque threshold of driving motor.
In step S203, electric machine controller is when the torque of driving motor is decreased to be equal to the first torque threshold, to whole
Vehicle controller sends first and subtracts torsion completion signal.
It is understood that the first torque threshold can be greater than 0, such as it can be 2N*m (N*m refer to ox rice, i.e. torque
Unit), i.e., it is without unloading the output torque of motor completely, i.e., executable to pluck gear process, reduce torque ripple range, mention
The ride comfort of shift process is risen.
In step S204, entire car controller receive first subtract torsion complete signal when, to gearbox control send
Pluck gear instruction.
In step S205, gearbox control receive pluck gear instruction when, control synchronizer combined cover is from original tooth
It encloses mobile to neutral position.
In the present embodiment, during plucking gear, method further include:
Gearbox control receive pluck gear instruction when, the selector fork of synchronizer is stirred with the first gear shifting force, shift gears
Shift fork pushes synchronizer combined cover mobile from original gear ring to neutral position.
Original gear ring is to censure the gear ring being meshed before gear with synchronizer combined cover, that is, the original gear institute before shifting gears
Corresponding gear ring.
The gear ring for completing to be meshed after shift with synchronizer combined cover is known as target gear ring, i.e., the mesh being switched to needs
Mark the corresponding gear ring of gear.
In the present embodiment, as shown in Fig. 2, original gear ring and target gear ring are located at the two sides of synchronizer combined cover,
The gear ring engaged can be determined by controlling the moving direction of synchronizer combined cover, that is, determine the gear being linked into.
Original gear ring in Fig. 2 can be 1 grade of gear ring, and target gear ring can be 2 grades of gear rings or original gear ring and can be
2 grades of gear rings, target gear ring can be 1 grade of gear ring.
And original gear ring and target gear ring are separately positioned on to the two sides of synchronizer combined cover, rather than it is arranged two together
It walks device and saves space but also the overall structure of gearbox is more compact, alleviate light weight.
The concrete principle of synchronizer is introduced below.
Specifically, in synchronizer, a gear ring includes first ring gear and second ring gear, i.e., in the present embodiment
Synchronizer include two the first ring gears and two the second ring gears, one of them first ring gear and second ring gear are one group,
To one gear ring of every group of formation.Synchronizer further includes a splined hub, and splined hub is fixedly connected with motor output shaft.
Synchronizer is during switching to synchronous regime from asynchronous regime, sky of the control synchronizer combined cover from centre
Gear is set to a certain target gear ring and is slided, and keeps being meshed with splined hub in sliding process, and synchronizer combined cover pushes mesh
The second ring gear in mark gear ring is slided to the first ring gear, makes the circular conical surface and the first ring gear outer wall of the second ring gear inner wall setting
The circular conical surface mutual extrusion friction of setting reduces the rotational speed difference of the first ring gear and the second ring gear, when rotational speed difference is decreased to zero, institute
It states synchronizer combined cover to continue to slide to target gear ring, spline and the first ring gear that synchronizer combined cover inner wall is arranged and the
The spline of two ring gear outer walls setting is meshed, to realize synchronization.
In step S206, gearbox control is when synchronizer combined cover is moved to neutral position, to entire car controller
Transmission plucks gear and completes signal.
When synchronizer combined cover is moved to neutral position, synchronizer combined cover is not engaged with any one gear ring.
Rotational speed difference when putting into gear to reduce, it is also necessary to carry out speed regulation operation.
In step S207, entire car controller receive pluck gear complete signal when, to electric machine controller send speed regulation refer to
It enables.
In step S208, electric machine controller is when receiving speed-regulating instruction, by the revolving speed of driving motor to rotating speed of target
Adjustment.
In the present embodiment, vehicle's current condition further includes current vehicle speed, and target gear ring corresponds to target gear, adjusting the speed
In the process, for the rotating speed of target being accurately determined as when driving motor speed regulation, to reduce driving motor and target gear ring as far as possible
Between rotational speed difference.
Electric machine controller is stated when receiving speed-regulating instruction, receives entire car controller according to target corresponding with target gear ring
Gear and the calculated rotating speed of target of current vehicle speed.
It is understood that current vehicle speed is higher, rotating speed of target is higher；Simultaneously because the transmission ratio of two gears is not
Together, target gear is lower, and rotating speed of target is higher.
According to rotating speed of target, by adjusting the size of current for flowing through driving motor, the revolving speed of driving motor is turned to target
Velocity modulation is whole.
The operation for the size of current that driving motor is flowed through in adjustment can use the power regulation module in electric machine controller and come
It executes.
In step S209, difference of the electric machine controller between the revolving speed and rotating speed of target of driving motor is less than rotational speed difference
When threshold value, speed regulation is sent to entire car controller and completes signal.
In step S210, entire car controller sends second to gearbox control when receiving speed regulation completion signal
Subtract torsion instruction.
In step S211, electric machine controller receive second subtract torsion instruction when, control driving motor reduce torque simultaneously
Compare the torque and the second torque threshold of driving motor in real time.
The process for subtracting torsion herein and above-mentioned electric machine controller receive first subtract when turning round instruction to subtract torsion process similar,
Electric machine controller flows through the electric current of driving motor by reducing, control driving motor reduces when receiving second and subtracting torsion instruction
Torque.The operation for wherein reducing the electric current for flowing through driving motor can use the power regulation module in electric machine controller to hold
Row.
Second torque threshold, which can be, to be preset by developer and is stored in electric machine controller, can also be by
Entire car controller, which generates in real time according to vehicle's current condition and is embedded in second, to be subtracted in torsion instruction.
Electric machine controller can receive second subtract torsion instruction when, open second monitoring window, second monitoring window use
In the size relation in real time relatively between the torque and the second torque threshold of driving motor.
In step S212, electric machine controller is when the torque of driving motor is decreased to be equal to the second torque threshold, to whole
Vehicle controller sends second and subtracts torsion completion signal.
It is understood that the second torque threshold can be greater than 0, such as it can be 2N*m (N*m refer to ox rice, i.e. torque
Unit), i.e., it is without unloading the output torque of motor completely, i.e., executable to pluck gear process, reduce torque ripple range, mention
The ride comfort of shift process is risen.
In step S213, entire car controller receive second subtract torsion complete signal when, to gearbox control send
Synchronic command.
In step S214, gearbox control controls synchronizer combined cover to target teeth when receiving synchronic command
Circle movement, and when the revolving speed of synchronizer combined cover is synchronous with the revolving speed of target gear ring, control synchronizer combined cover and target teeth
Circle engagement.
In the present embodiment, method further include:
Gearbox control is dialled when the revolving speed of synchronizer combined cover is synchronous with the revolving speed of target gear ring with the second gear shifting force
The selector fork of dynamic synchronizer, selector fork push synchronizer combined cover mobile to target gear ring, until synchronizer combined cover
Spline tooth is meshed with the spline tooth of target gear ring.
It is understood that when plucking gear due to the presence of potential rotational speed difference, it is easy to cause the case where beating tooth, therefore need
Synchronizer combined cover is controlled with biggish power, to control synchronizer combined cover with faster movement speed, pluck gear to shorten
Process, then shortening may cause the time for beating tooth, avoid the unnecessary abrasion of gearbox to the full extent.And when into gear,
In order to avoid generating biggish impact force between the spline of synchronizer combined cover and the chamfering of target gear ring, then need with lesser
Power controls synchronizer combined cover, the impact and abrasion generated when reducing synchro-meshing to gear ring.It is accordingly used in stirring synchronizer
Selector fork to push synchronizer combined cover to be arranged to big from original gear ring to the first mobile gear shifting force of neutral position
In second gear shifting force of the selector fork for stirring synchronizer to push synchronizer combined cover mobile to target gear ring, i.e., the
One gear shifting force is greater than the second gear shifting force, so that improving shift speed under the premise of guaranteeing gearbox life and shift being flat
It is pliable.
And after synchronizer combined cover is engaged with target gear ring, gearbox control can reduce gear shifting force, to avoid same
It is excessive to walk the displacement of device combined cover.
As a kind of alternative embodiment, method further include:
Gearbox control synchronously completes letter when synchronizer combined cover is engaged with target gear ring, to entire car controller transmission
Number.
Entire car controller receive synchronously complete signal when, to electric machine controller send torque restore instruction.
In the present embodiment, after the completion of gear shift operation, so that it may so that vehicle restores nominal situation, according to the real-time of driver
Torque demand controls driving motor output torque, and implementation is as follows:
Electric machine controller receives entire car controller according to gas pedal aperture, current when receiving torque and restoring instruction
The target torque that gear and current vehicle speed are determined, and by adjusting the size of current for flowing through driving motor, by driving motor
Torque be adjusted to target torque.
As a kind of alternative embodiment, entire car controller monitors torque in actual wheel after receiving and synchronously completing signal
Take turns upper torque with expected, if after the first preset time, difference between the torque and target torque of driving motor according to
It is old to be greater than predetermined torque difference threshold, then determine that this time shift does not succeed, that is, be possible to occur synchronizer not with target gear ring
The case where success is engaged, entire car controller subtracts torsion instruction to electric machine controller transmission first again at this time, re-executes and once changes
Gear process, but target shift invariant position, i.e., the target gear selected before shift failure are exactly mesh when re-executing shift process
Mark gear.Wherein, torque can be obtained by sensor in actual wheel, it is contemplated that on wheel torque can use motor output speeds and
The gear ratio calculation of target gear obtains.
In the present embodiment, total using CAN or LIN between entire car controller, electric machine controller and gearbox control
Line is attached.
System can also include battery management system, power battery, main reducing gear and differential mechanism.
The beneficial effect of technical solution provided in an embodiment of the present invention includes at least:
The embodiment of the invention provides a kind of two gear transmission control methods, method includes:
Entire car controller is when judging that vehicle meets shift trigger condition according to vehicle's current condition, to electric machine controller
It sends first and subtracts torsion instruction, can automatically and accurately judge whether vehicle meets trigger condition using entire car controller；Motor
When receiving first and subtracting torsion instruction, control driving motor reduces torque and compares the torque and the of driving motor in real time controller
One torque threshold；Electric machine controller is sent out when the torque of driving motor is decreased to be equal to the first torque threshold to entire car controller
It send first to subtract torsion and completes signal；Entire car controller receive first subtract torsion complete signal when, to gearbox control transmission pluck
Gear instruction beats tooth situation so as to avoid when plucking gear, improves the smooth of shift due to having carried out subtracting torsion before plucking gear
Property；Gearbox control receive pluck gear instruction when, control synchronizer combined cover is mobile from original gear ring to neutral position；Become
Fast case controller plucks gear to entire car controller transmission and completes signal when synchronizer combined cover is moved to neutral position；Vehicle control
Device processed receive pluck gear complete signal when, to electric machine controller send speed-regulating instruction；Electric machine controller refers to receiving speed regulation
When enabling, the revolving speed of driving motor is adjusted to rotating speed of target；Electric machine controller is between the revolving speed and rotating speed of target of driving motor
Difference be less than rotational speed difference threshold value when, to entire car controller send speed regulation complete signal；Entire car controller has been adjusted the speed receiving
When at signal, second is sent to gearbox control and subtracts torsion instruction；Electric machine controller receive second subtract torsion instruction when, control
Driving motor reduces torque and compares the torque and the second torque threshold of driving motor in real time；Electric machine controller is in driving motor
When torque is decreased to be equal to the second torque threshold, second is sent to entire car controller and subtracts torsion completion signal；Entire car controller is connecing
Receive second subtract torsion complete signal when, to gearbox control send synchronic command；Gearbox control refers to receiving to synchronize
When enabling, control synchronizer combined cover is mobile to target gear ring, and same in the revolving speed of synchronizer combined cover and the revolving speed of target gear ring
When step, control synchronizer combined cover is engaged with target gear ring.Due to utilizing entire car controller judgement shift trigger condition and determination
Rotating speed of target, using electric machine controller carry out moment of torsion control, using gearbox control carry out gear shift operation, entire car controller,
Mutual coordinated, allows the vehicle to after saving clutch between electric machine controller and gearbox control three
It is able to achieve smooth and rapidly shifts gears, rotating ratio is changed according to vehicle actual condition, improves new energy vehicle driving motor
Operational efficiency.
The present embodiment and embodiment one are based on identical inventive concept, are that system corresponding with embodiment of the method one is implemented
Example, therefore it should be appreciated by those skilled in the art that being similarly adapted to the present embodiment to the explanation of embodiment one, some technologies are thin
Section is no longer described in detail in the present embodiment.
In this application, it should be understood that term " first ", " second " etc. are used for description purposes only, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
The protection scope of invention.
Claims (10)
1. a kind of two gear transmission control systems, which is characterized in that the system comprises entire car controllers, electric machine controller
And gearbox control, in which:
The entire car controller is used for when judging that the vehicle meets shift trigger condition according to vehicle's current condition, to institute
It states electric machine controller transmission first and subtracts torsion instruction；
The electric machine controller be used for receive described first subtract torsion instruction when, control driving motor reduce torque simultaneously compares in real time
The torque of the driving motor and the first torque threshold；
The electric machine controller is used for when the torque of the driving motor is decreased to be equal to first torque threshold, Xiang Suoshu
Entire car controller sends first and subtracts torsion completion signal；
The entire car controller be used for receive described first subtract torsion complete signal when, Xiang Suoshu gearbox control transmission pluck
Gear instruction；
The gearbox control be used for receive it is described pluck gear instruction when, control synchronizer combined cover is from original gear ring to sky
File location is mobile；
The gearbox control is used for when the synchronizer combined cover is moved to neutral position, Xiang Suoshu entire car controller hair
It send and plucks gear completion signal；
The entire car controller be used for receive it is described pluck gear and complete signal when, Xiang Suoshu electric machine controller sends speed regulation and refers to
It enables；
The electric machine controller is used for when receiving the speed-regulating instruction, by the revolving speed of the driving motor to rotating speed of target tune
It is whole；
The electric machine controller is less than rotational speed difference for the difference between the revolving speed and the rotating speed of target of the driving motor
When threshold value, Xiang Suoshu entire car controller sends speed regulation and completes signal；
The entire car controller is used for when receiving the speed regulation completion signal, and Xiang Suoshu gearbox control sends second and subtracts
Turn round instruction；
The electric machine controller be used for receive described second subtract torsion instruction when, control driving motor reduce torque simultaneously compares in real time
The torque of the driving motor and the second torque threshold；
The electric machine controller is used for when the torque of the driving motor is decreased to be equal to second torque threshold, Xiang Suoshu
Entire car controller sends second and subtracts torsion completion signal；
The entire car controller is used for when receiving described second and subtracting torsion and complete signal, and Xiang Suoshu gearbox control sends same
Step instruction；
The gearbox control is used for when receiving the synchronic command, controls the synchronizer combined cover to target gear ring
It is mobile, and when the revolving speed of the synchronizer combined cover is synchronous with the revolving speed of the target gear ring, it controls the synchronizer and combines
Set is engaged with the target gear ring.
2. system according to claim 1, which is characterized in that the vehicle's current condition includes brake pedal aperture, oil
Door pedal opening and current gear, the current gear include high-grade and low grade, and the entire car controller is also used to execute following
At least one of three:
When the brake pedal aperture less than the first aperture threshold value, the gas pedal aperture less than the second aperture threshold value and described
When current gear is low-grade, determine that the vehicle meets shift trigger condition；
When the brake pedal aperture is greater than the first aperture threshold value, the gas pedal aperture less than the second aperture threshold value and institute
Current gear is stated for these three high-grade conditions while when meeting, determines that the vehicle meets trigger condition of shifting gears；
When the brake pedal aperture is greater than the second aperture threshold value and institute less than the first aperture threshold value, the gas pedal aperture
Current gear is stated for these three high-grade conditions while when meeting, determines that the vehicle meets trigger condition of shifting gears.
3. system according to claim 1, which is characterized in that the vehicle's current condition further includes current vehicle speed,
The gearbox control is also used to the Xiang Suoshu vehicle control when the synchronizer combined cover is engaged with the target gear ring
Device transmission processed synchronously completes signal；
The entire car controller be also used to receive it is described synchronously complete signal when, it is extensive that Xiang Suoshu electric machine controller sends torque
Multiple instruction；
The electric machine controller is also used to receive the entire car controller according to when receiving the torque recovery instruction
The target torque that gas pedal aperture, the current gear and the current vehicle speed are determined, and it is described by adjusting flowing through
The torque of the driving motor is adjusted to the target torque by the size of current of driving motor.
4. system according to claim 3, which is characterized in that the target gear ring corresponds to target gear, the motor
Controller is also used to:
When receiving the speed-regulating instruction, the entire car controller is received according to the target corresponding with the target gear ring
Gear and the calculated rotating speed of target of the current vehicle speed；
According to the rotating speed of target, by adjusting the size of current for flowing through the driving motor, by the revolving speed of the driving motor
It is adjusted to the rotating speed of target.
5. system according to claim 1, which is characterized in that the electric machine controller is also used to:
Receive described first subtract torsion instruction or described second subtract torsion instruction when, flow through the electricity of the driving motor by reducing
Stream controls the driving motor and reduces torque.
6. system according to claim 1, which is characterized in that the original gear ring and the target gear ring are located at institute
State the two sides of synchronizer combined cover.
7. system according to claim 6, which is characterized in that the gearbox control is also used to:
Receive it is described pluck gear instruction when, the selector fork of synchronizer is stirred with the first gear shifting force, the selector fork pushes
The synchronizer combined cover is mobile from original gear ring to neutral position.
8. system according to claim 7, which is characterized in that the gearbox control is also used to:
When the revolving speed of the synchronizer combined cover is synchronous with the revolving speed of the target gear ring, synchronizer is stirred with the second gear shifting force
Selector fork, the selector fork pushes the synchronizer combined cover mobile to the target gear ring, until the synchronizer
The spline tooth of combined cover is meshed with the spline tooth of the target gear ring.
9. according to system described in claim 7-8, which is characterized in that first gear shifting force is greater than second gear shifting force.
10. a kind of two gear transmission control methods, which is characterized in that the described method includes:
The entire car controller is when judging that the vehicle meets shift trigger condition according to vehicle's current condition, to the electricity
Machine controller sends first and subtracts torsion instruction；
The electric machine controller receive described first subtract torsion instruction when, control driving motor reduce torque simultaneously compare institute in real time
State the torque and the first torque threshold of driving motor；
The electric machine controller is when the torque of the driving motor is decreased to be equal to first torque threshold, Xiang Suoshu vehicle
Controller sends first and subtracts torsion completion signal；
The entire car controller when receiving described first and subtracting torsion and complete signal, pluck gear and refer to by the transmission of Xiang Suoshu gearbox control
It enables；
The gearbox control receive it is described pluck gear instruction when, control synchronizer combined cover is from original gear ring to neutral position
Set movement；
The gearbox control when the synchronizer combined cover is moved to neutral position, pluck by the transmission of Xiang Suoshu entire car controller
Gear completes signal；
The entire car controller receive it is described pluck gear and complete signal when, Xiang Suoshu electric machine controller sends speed-regulating instruction；
The electric machine controller is adjusted when receiving the speed-regulating instruction, by the revolving speed of the driving motor to rotating speed of target；
Difference of the electric machine controller between the revolving speed and the rotating speed of target of the driving motor is less than rotational speed difference threshold value
When, Xiang Suoshu entire car controller sends speed regulation and completes signal；
When receiving the speed regulation completion signal, Xiang Suoshu gearbox control transmission second subtracts torsion and refers to the entire car controller
It enables；
The electric machine controller receive described second subtract torsion instruction when, control driving motor reduce torque simultaneously compare institute in real time
State the torque and the second torque threshold of driving motor；
The electric machine controller is when the torque of the driving motor is decreased to be equal to second torque threshold, Xiang Suoshu vehicle
Controller sends second and subtracts torsion completion signal；
When receiving described second and subtracting torsion and complete signal, the transmission of Xiang Suoshu gearbox control synchronizes and refers to the entire car controller
It enables；
The gearbox control controls the synchronizer combined cover and moves to target gear ring when receiving the synchronic command
It is dynamic, and when the revolving speed of the synchronizer combined cover is synchronous with the revolving speed of the target gear ring, control the synchronizer combined cover
It is engaged with the target gear ring.
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