CN108501953A - A kind of electric vehicle gear method for handover control, device and automobile - Google Patents
A kind of electric vehicle gear method for handover control, device and automobile Download PDFInfo
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- CN108501953A CN108501953A CN201810611589.7A CN201810611589A CN108501953A CN 108501953 A CN108501953 A CN 108501953A CN 201810611589 A CN201810611589 A CN 201810611589A CN 108501953 A CN108501953 A CN 108501953A
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- 230000007935 neutral effect Effects 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 13
- 230000001095 motoneuron effect Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 9
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- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
-
- 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
-
- 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
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0604—Throttle position
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/18—Braking system
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to a kind of electric vehicle gear method for handover control, device and electric vehicle, to solve the problems, such as that electric vehicle cannot carry out gear switching and cause the driving force specislity of vehicle and drive efficiency poor in the prior art.The technical solution of the electric vehicle gear method for handover control is：Obtain the current driving parameter information of vehicle；According to the current driving parameter information, the target travel gear of vehicle is determined；In the current driving gear difference of the target travel gear and the vehicle, then the output rotating speed and output torque of the gearbox gear of the vehicle, motor are controlled.
Description
Technical field
The present invention relates to automobile shift switch field, specifically a kind of electric vehicle gear method for handover control, device and
Automobile.
Background technology
Being constantly progressive and develop with new-energy automobile technology, it is also higher and higher to the performance requirement of electric vehicle, no
It requires nothing more than and realizes the basic driving functions of electric vehicle, and the dynamic property for electric vehicle, economy, driver comfort, behaviour
Handing stability requires higher and higher.Core component one of of the electric driving control system as electric vehicle, configurations will be right
These performances generate apparent influence.
For electric vehicle, since the peak torque of motor and the rotating speed section of maximum power are all very wide, from motor
Operation start can maximum output torque, and motor can be continued in high rotating speed section；In addition motor is most
Big output power can also keep very wide rotating speed section, can cover the various different operation works that common vehicle is encountered substantially
Condition.Therefore, pure electric vehicle locomotive in the prior art, used is the structure that driving motor adds single-stage speed reducing mechanism to be used cooperatively
Type.
Due to single machine deceleration, mechanism can only provide a kind of speed ratio, the electric vehicle of the type can only be in a gear
It is travelled, the problems of the vehicle of this configuration is, the driving force specislity and drive efficiency of automobile are poor.
Invention content
The purpose of the present invention is to provide a kind of electric vehicle gear method for handover control, device and automobiles, existing to solve
Having electric vehicle in technology that cannot carry out gear switching leads to the driving force specislity of vehicle and the poor problem of drive efficiency.
The technical scheme is that：
The present invention provides a kind of electric vehicle gear method for handover control, are applied to electric vehicle, and the electric vehicle includes
Motor and the gearboxes that multiple traveling gears are connect and had with motor, including：
Obtain the current driving parameter information of vehicle；
According to the current driving parameter information, the target travel gear of vehicle is determined；
In the current driving gear difference of the target travel gear and the vehicle, then the traveling of the gearbox is kept off
Position, the output rotating speed of the motor and output torque are controlled.
Preferably, in the target travel gear and the current driving gear difference, then to the row of the gearbox
Sailing the step of gear, the output rotating speed of the motor and output torque are controlled includes：
According to the predetermined correspondence between the target travel gear of gearbox and the target requirement rotating speed of motor, the electricity is determined
The target requirement rotating speed of machine；
The output torque for controlling the motor is adjusted by current output torque to zero；
When the output torque of the motor is adjusted to zero, the traveling gear of the gearbox is controlled by the current driving gear
Switch to neutral gear；
The output rotating speed of the motor is controlled by currently exporting adjustment of rotational speed to the target requirement rotating speed, makes the gearbox
Difference between input shaft rotating speed and output rotating speed is located within the scope of a desired speed value；
In output adjustment of rotational speed to the target requirement rotating speed of the motor, the traveling gear of the gearbox is controlled by institute
It states neutral gear and switches to the target travel gear.
Preferably, when the target travel gear is with the current driving gear difference, then to the traveling of the gearbox
The step of gear, the output rotating speed of the motor and output torque are controlled further include：
According to the target travel gear of gearbox, the corresponding gear speed ratio of target travel gear and motor target requirement torque it
Between predetermined correspondence, determine the target requirement torque of the motor；
When the traveling gear of the gearbox switches to the target travel gear by the neutral gear, the motor is controlled
Output torque by zero adjustment to the target requirement torque.
Preferably, the current driving parameter information includes that the current driving speed of the vehicle, current throttle pedal are opened
Degree, current brake pedal state and current motor efficiency determine the target travel of vehicle according to the current driving parameter information
The step of gear includes：
According to the current driving speed, the current throttle pedal aperture, the current brake pedal state, the current electricity
The predetermined correspondence of engine efficiency and target travel gear determines the target travel gear；
The predetermined correspondence includes first part's correspondence and second part correspondence, and the first part, which corresponds to, closes
In system, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle pedal are opened
Degree, the current motor efficiency and the target travel gear correspond；It is described current in the second part correspondence
Brake pedal status is the state trampled, the current driving speed, the current throttle pedal aperture, the current motor
Efficiency and the target travel gear correspond；And first part's correspondence and the second part correspondence
In, the same current driving speed, the same current throttle pedal aperture, corresponding to the same current motor efficiency
The target travel gear is different.
According to another aspect of the present invention, the present invention also provides a kind of electric vehicle gear switching control, applications
In electric vehicle, the electric vehicle includes motor and the gearboxes of multiple traveling gears is connect and had with motor, including：
Acquisition module, the current driving parameter information for obtaining vehicle；
Determining module, for according to the current driving parameter information, determining the target travel gear of vehicle；
Control module, when being used for the current driving gear difference in the target travel gear and the vehicle, then to the change
The traveling gear of fast case, the output rotating speed of the motor and output torque are controlled.
Preferably, control module includes：
First determination unit, for according to predetermined pair between the target travel gear of gearbox and the target requirement rotating speed of motor
It should be related to, determine the target requirement rotating speed of the motor；
First control unit, the output torque for controlling the motor are adjusted by current output torque to zero；
Second control unit, for when the output torque of the motor is adjusted to zero, controlling the traveling gear of the gearbox
Neutral gear is switched to by the current driving gear；
Third control unit, the output rotating speed for controlling the motor are turned by currently exporting adjustment of rotational speed to the target requirement
Speed makes the difference between the input shaft rotating speed of the gearbox and output rotating speed be located within the scope of a desired speed value；
4th control unit, in output adjustment of rotational speed to the target requirement rotating speed of the motor, controlling the change
The traveling gear of fast case switches to the target travel gear by the neutral gear.
Preferably, the control module further includes：
Second determination unit, for the corresponding gear speed ratio of target travel gear, target travel gear and electricity according to gearbox
Predetermined correspondence between the target requirement torque of machine determines the target requirement torque of the motor；
5th control unit switches to the target travel by the neutral gear for the traveling gear in the gearbox and keeps off
When position, the output torque of the motor is controlled by zero adjustment to the target requirement torque.
Preferably, the current driving parameter information includes that the current driving speed of the vehicle, current throttle pedal are opened
Degree, current brake pedal state and current motor efficiency, determining module include：
Third determination unit, for being stepped on according to the current driving speed, the current throttle pedal aperture, the current brake
The predetermined correspondence of board status, the current motor efficiency and target travel gear determines the target travel gear；
The predetermined correspondence includes first part's correspondence and second part correspondence, and the first part, which corresponds to, closes
In system, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle pedal are opened
Degree, the current motor efficiency and the target travel gear correspond；It is described current in the second part correspondence
Brake pedal status is the state trampled, the current driving speed, the current throttle pedal aperture, the current motor
Efficiency and the target travel gear correspond；And first part's correspondence and the second part correspondence
In, the same current driving speed, the same current throttle pedal aperture, corresponding to the same current motor efficiency
The target travel gear is different.
According to another aspect of the present invention, the present invention also provides a kind of automobiles, including above-mentioned electric vehicle gear to cut
Change control device.
Beneficial effects of the present invention are：
By being imitated according to the current driving speed of vehicle, current throttle pedal aperture, current brake pedal state and current motor
Rate determines the target travel gear of vehicle, and in the target travel gear of vehicle and current driving gear difference, to tool
The output torque of the traveling gear and motor that have the gearbox of multiple traveling gears is controlled with output rotating speed.Thus, it can
To be controlled come the output torque and rotating speed of traveling gear and motor to gearbox according to the actual operating mode of vehicle, into
And electric vehicle cost is reduced, the driving force specislity and drive efficiency of vehicle are promoted, ensures the comfort of vehicle drive；Meanwhile
In shift process, by the Collaborative Control of motor and gearbox, realizes the function of " virtual synchronous device ", meet gear and steadily cut
It changes and comfort.
Description of the drawings
Fig. 1 is the structural schematic diagram of the electric vehicle of the present invention；
Fig. 2 is the flow chart of the electric vehicle gear method for handover control of the present invention；
Fig. 3 is the flow chart of the step 13 of the present invention.
Specific implementation mode
Referring to Fig.1 with Fig. 2, the present invention provides a kind of electric vehicle gear method for handover control, are applied to electric vehicle,
It is not installed with clutch on the electric vehicle, in order to realize that the electric vehicle for being not installed with clutch can carry out gear switching,
The electric vehicle specifically includes：Including transmission shaft 1, there are multiple traveling gears（Specially there are multiple forward gears to travel gear）
Gearbox 2, gear box control unit 3, full-vehicle control unit 4, motor 5, motor control unit 6, wherein gearbox 2 distinguish
Connect with motor 5 and transmission shaft 1, be responsible for by the driving force of motor 5 be transmitted to transmission shaft end, realize torque, rotating speed transmission with
Conversion.Gear box control unit 3 is connected by communication line with full-vehicle control unit 4, for being sent to full-vehicle control unit 4
Gearbox state information, and when receiving the order of full-vehicle control unit 4, can judgement carry out gear shift operation, and sentence
Break and gear shift operation is carried out to gearbox 2 when can carry out gear shift operation.
Full-vehicle control unit 4 is connected with gear box control unit 3 and motor control unit 6 respectively by communication line,
Gear shift is determined whether according to whole vehicle state, and when determining to be shifted gears according to multiple parameters information, to electricity
Machine control unit 6 sends out the target requirement torque and target requirement rotary speed information of motor 5.
Motor 5 is connect with gearbox 2 and motor control unit 6 respectively, and it is defeated to control motor 5 by motor control unit 6
Go out driving force to gearbox 2, and then is transferred at transmission axle 1.
Motor control unit 6 is connected by communication line with full-vehicle control unit 4, is responsible for according to full-vehicle control unit 4
Instruction control motor 5 adjust output torque and control rotating speed, and the status information of motor is sent to full-vehicle control unit 4.
Full-vehicle control unit 4 is according to from motor control unit 6 and gear box control unit 3 and itself collected letter of institute
Breath, to determine whether need to carry out the shift of gearbox 2, and when determining to be shifted gears, by being controlled to gearbox
The output order of unit 3 so that gear box control unit 3 controls gearbox 2 and carries out gear switching, and to motor control unit 6
Output order so that motor control unit 6 controls motor 5 and carries out torque and adjustment of rotational speed so that is not installed with the electricity of clutch
Electrical automobile can realize the gear switching of gearbox 2, meet gear steadily switching and comfort.
Specifically, with reference to Fig. 2, method provided by the invention includes：
Step 11, the current driving parameter information of vehicle is obtained.
Wherein, the current driving parameter information include the current driving speed of the vehicle, current throttle pedal aperture,
Current brake pedal state and current motor efficiency.Current brake pedal state includes the state that the brake pedal of vehicle is trampled
The state that do not trampled with brake pedal.Electric efficiency for vehicle is then according to the current output torque of motor 5 and current
Output torque and prefabricated electric efficiency curve graph are determined, in prefabricated electric efficiency curve graph, motor 5
It corresponds between output torque, output rotating speed and electric efficiency, therefore, can be turned round according to the current output of collected motor
Square determines corresponding electric efficiency with current output rotating speed.
Full-vehicle control unit 4 periodically obtains the specifying information of above-mentioned 5 parameters.For example, the specific period can be
Other cycle values such as 5ms, 10ms, 20ms.In the process of moving due to automobile, the variation of all kinds of operating parameters is very fast, is
The Real-road Driving Cycle of vehicle is catered to, in embodiments of the present invention, full-vehicle control unit 4 obtains between above-mentioned 5 parameters
It is very short every the time.
Step 12, according to the current driving parameter information, the target travel gear of vehicle is determined.
Wherein, step 12 is specially：According to the current driving speed, the current throttle pedal aperture, described current
The predetermined correspondence of brake pedal status, the current motor efficiency and target travel gear determines the target travel gear
Position.
The predetermined correspondence, is obtained by test data, in the predetermined correspondence, according to current
The predetermined correspondence is divided into 2 parts by the difference of brake pedal status, in first part's correspondence, current brake
Pedal state is the state trampled, current driving speed, current throttle pedal aperture, current motor efficiency and target travel gear
Position corresponds；In second part correspondence, current brake pedal state is the state that do not trampled, current driving vehicle
Speed, current throttle pedal aperture, current motor efficiency and target travel gear correspond；And first part's correspondence
In the second part correspondence, the same current driving speed, the same current throttle pedal aperture, same institute
The target travel gear stated corresponding to current motor efficiency is different.
Step 13, in the current driving gear difference of the target travel gear and the vehicle, then to the speed change
The traveling gear of case, the output rotating speed of the motor and output torque are controlled.
Wherein, if target travel gear is identical as current driving gear, show that the gear that need not carry out gearbox 2 is cut
It changes, at this point, full-vehicle control unit 4, which is back to, carries out step 11.
Specifically, in embodiments of the present invention, with reference to Fig. 3, step 13 specifically includes：
Step 131, according to the predetermined correspondence between the target travel gear of gearbox 2 and the target requirement rotating speed of motor 5,
Determine the target requirement rotating speed of the motor 5.
Step 132, the output torque for controlling the motor 5 is adjusted by current output torque to zero.
Step 133, when the output torque of the motor 5 is adjusted to zero, the traveling gear of the gearbox 2 is controlled by institute
It states current driving gear and switches to neutral gear.
Step 134, the output rotating speed of the motor 5 is controlled by currently exporting adjustment of rotational speed to the target requirement rotating speed,
The difference between the input shaft rotating speed of the gearbox 2 and output rotating speed is set to be located within the scope of a desired speed value.
Step 135, in the output adjustment of rotational speed of the motor 5 to the target requirement rotating speed, the gearbox 2 is controlled
Traveling gear the target travel gear is switched to by the neutral gear.
Step 136, according to the target travel gear of gearbox 2, the corresponding gear speed ratio of target travel gear and motor 5
Predetermined correspondence between target requirement torque determines the target requirement torque of the motor 5.
Step 137, the target travel gear is switched to by the neutral gear in the traveling gear of the gearbox 2
When, the output torque of the motor 5 is controlled by zero adjustment to the target requirement torque.
In step 131, it will be understood by those skilled in the art that each target travel gear is corresponding in particular range
Range of motor speeds can be test according to the difference of specific vehicle model by real vehicle, to determine the vehicle of the type model
The specific corresponding range of speeds limit value of each traveling gear.The target requirement rotating speed can be set to corresponding with the target travel gear
The range of speeds in any number, such as the median in the range of speeds.It is kept off for D for example, travelling gear for gearbox
Gear, the range of speeds of corresponding target requirement rotating speed is 7000 revs/min to 8000 revs/min, which can
Think 7500 revs/min.
In step 132, the output torque of motor 5 is by the purpose that current output torque is adjusted to zero so that electricity
Machine 5 no longer provides driving force to gearbox 2, and cut-out gearbox 2 is transferred to the driving force of transmission shaft 1 so that gearbox 2 subsequently exists
Steady and smooth-going switching can be carried out during gear shift operation.
In step 133, since vehicle does not have a clutch shifted gears convenient for gearbox 2, gearbox 2 is needed from working as
Preceding traveling gear switches to neutral gear and target travel gear successively could realize that gear switches, and cannot directly carry out gear
Switching.
In step 134, the purpose of the adjustment of the output rotating speed of motor 5 is so that the input shaft end of gearbox 2 and
The rotating speed of output shaft end is same or similar, realizes the function of " virtual synchronous device " so that gearbox 2 is operated subsequent into gear
When more smooth-going it is reliable.In step 134, the output rotating speed of gearbox 2 and the difference being transferred between rotating speed are the two difference
Absolute value.Between the desired speed value may range from 0 to 100 rev/min, wherein 0≤n≤100（N is rotating speed）.
In step 135, after the traveling gear of gearbox 2 switches to target travel gear by neutral gear, motor 5 with
Mechanical connection between transmission shaft 1 is formed, and then completes the output of driving torque.
After mechanical connection between motor 5 and transmission shaft 1 is established, motor 5 exports target requirement torque, is transferred to transmission
Axis 2 so that the driving condition of vehicle can be converted into the state for meeting user demand.
By according to the current driving speed of vehicle, current throttle pedal aperture, current brake pedal state and current electricity
Engine efficiency determines the target travel gear of vehicle, and in the target travel gear of vehicle and current driving gear difference,
The output torque of traveling gear and motor 5 to the gearbox 2 with multiple traveling gears is controlled with output rotating speed.Cause
And it can be controlled come the output torque and rotating speed of gear and motor 5 to gearbox 2 according to the actual operating mode of vehicle
System, and then electric vehicle cost is reduced, the driving force specislity and drive efficiency of vehicle are promoted, ensures the comfort of vehicle drive；
Meanwhile in shift process, by the Collaborative Control of motor 5 and gearbox 2, realizes the function of " virtual synchronous device ", meet gear
The steady switching in position and comfort.
With reference to Fig. 3, according to another aspect of the present invention, the present invention also provides a kind of electric vehicle gear switching control dresses
It sets, is applied to electric vehicle, the electric vehicle includes motor and the gearboxes of multiple traveling gears is connect and had with motor,
Including：
Acquisition module 101, the current driving parameter information for obtaining vehicle；
Determining module 102, for according to current driving parameter information, determining the target travel gear of vehicle；
Control module 103, when being used for the preceding traveling gear difference in the target travel gear and the vehicle, then to the change
The traveling gear of fast case, the output rotating speed of the motor and output torque are controlled.
Preferably, control module includes：
First determination unit, for according to predetermined pair between the target travel gear of gearbox and the target requirement rotating speed of motor
It should be related to, determine the target requirement rotating speed of the motor；
First control unit, the output torque for controlling the motor are adjusted by current output torque to zero；
Second control unit, for when the output torque of the motor is adjusted to zero, controlling the traveling gear of the gearbox
Neutral gear is switched to by the current driving gear；
Third control unit, the output rotating speed for controlling the motor are turned by currently exporting adjustment of rotational speed to the target requirement
Speed makes the difference between the input shaft rotating speed of the gearbox and output rotating speed be located within the scope of a desired speed value；
4th control unit, in output adjustment of rotational speed to the target requirement rotating speed of the motor, controlling the change
The traveling gear of fast case switches to the target travel gear by the neutral gear.
Preferably, the control module further includes：
Second determination unit, for the corresponding gear speed ratio of target travel gear, target travel gear and electricity according to gearbox
Predetermined correspondence between the target requirement torque of machine determines the target requirement torque of the motor；
5th control unit switches to the target travel by the neutral gear for the traveling gear in the gearbox and keeps off
When position, the output torque of the motor is controlled by zero adjustment to the target requirement torque.
Preferably, the current driving parameter information includes that the current driving speed of the vehicle, current throttle pedal are opened
Degree, current brake pedal state and current motor efficiency, determining module include：
Third determination unit, for being stepped on according to the current driving speed, the current throttle pedal aperture, the current brake
The predetermined correspondence of board status, the current motor efficiency and target travel gear determines the target travel gear；
The predetermined correspondence includes first part's correspondence and second part correspondence, and the first part, which corresponds to, closes
In system, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle pedal are opened
Degree, the current motor efficiency and the target travel gear correspond；It is described current in the second part correspondence
Brake pedal status is the state trampled, the current driving speed, the current throttle pedal aperture, the current motor
Efficiency and the target travel gear correspond；And first part's correspondence and the second part correspondence
In, the same current driving speed, the same current throttle pedal aperture, corresponding to the same current motor efficiency
The target travel gear is different.
Electric vehicle gear switching control provided in an embodiment of the present invention is switched with above-mentioned electric vehicle gear
The corresponding device of control method, all realization methods in the above method can also reach suitable for the embodiment of the device
Identical technique effect.By according to the current driving speed of vehicle, current throttle pedal aperture, current brake pedal state and
Current motor efficiency determines the target travel gear of vehicle, and the target travel gear of vehicle and current driving gear not
Meanwhile the output torque of the traveling gear and motor to the gearbox with multiple traveling gears is controlled with output rotating speed
System.Therefore, it is possible to be carried out come the output torque of gear and motor to gearbox and rotating speed according to the actual operating mode of vehicle
Control, and then electric vehicle cost is reduced, the driving force specislity and drive efficiency of vehicle are promoted, ensures the comfortable of vehicle drive
Property；Meanwhile in shift process, by the Collaborative Control of motor and gearbox, realizes the function of " virtual synchronous device ", meet gear
The steady switching in position and comfort.
According to another aspect of the present invention, the present invention also provides a kind of automobiles, including above-mentioned electric vehicle gear to cut
Change control device.
Claims (9)
1. a kind of electric vehicle gear method for handover control, be applied to electric vehicle, the electric vehicle include motor and with electricity
Machine connects and with the gearbox of multiple traveling gears, which is characterized in that including：
Obtain the current driving parameter information of vehicle；
According to the current driving parameter information, the target travel gear of vehicle is determined；
In the current driving gear difference of the target travel gear and the vehicle, then the traveling of the gearbox is kept off
Position, the output rotating speed of the motor and output torque are controlled.
2. electric vehicle gear method for handover control according to claim 1, which is characterized in that kept off in the target travel
When position is with the current driving gear difference, then the output rotating speed to the traveling gear of the gearbox, the motor and output
The step of torque is controlled include：
According to the predetermined correspondence between the target travel gear of gearbox and the target requirement rotating speed of motor, the electricity is determined
The target requirement rotating speed of machine；
The output torque for controlling the motor is adjusted by current output torque to zero；
When the output torque of the motor is adjusted to zero, the traveling gear of the gearbox is controlled by the current driving gear
Switch to neutral gear；
The output rotating speed of the motor is controlled by currently exporting adjustment of rotational speed to the target requirement rotating speed, makes the gearbox
Difference between input shaft rotating speed and output rotating speed is located within the scope of a desired speed value；
In output adjustment of rotational speed to the target requirement rotating speed of the motor, the traveling gear of the gearbox is controlled by institute
It states neutral gear and switches to the target travel gear.
3. electric vehicle gear method for handover control according to claim 2, which is characterized in that the target travel gear
When with the current driving gear difference, then the output rotating speed and output of the traveling gear of the gearbox, the motor are turned round
The step of square is controlled further include：
According to the target travel gear of gearbox, the corresponding gear speed ratio of target travel gear and motor target requirement torque it
Between predetermined correspondence, determine the target requirement torque of the motor；
When the traveling gear of the gearbox switches to the target travel gear by the neutral gear, the defeated of the motor is controlled
Go out torque by zero adjustment to the target requirement torque.
4. electric vehicle gear method for handover control according to claim 1, which is characterized in that the current driving parameter
Information includes the current driving speed of the vehicle, current throttle pedal aperture, current brake pedal state and current motor effect
Rate, according to the current driving parameter information, the step of target travel gear for determining vehicle, includes：
According to the current driving speed, the current throttle pedal aperture, the current brake pedal state, the current electricity
The predetermined correspondence of engine efficiency and target travel gear determines the target travel gear；
The predetermined correspondence includes first part's correspondence and second part correspondence, and the first part, which corresponds to, closes
In system, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle pedal are opened
Degree, the current motor efficiency and the target travel gear correspond；It is described current in the second part correspondence
Brake pedal status is the state trampled, the current driving speed, the current throttle pedal aperture, the current motor
Efficiency and the target travel gear correspond；And first part's correspondence and the second part correspondence
In, the same current driving speed, the same current throttle pedal aperture, corresponding to the same current motor efficiency
The target travel gear is different.
5. a kind of electric vehicle gear switching control, be applied to electric vehicle, the electric vehicle include motor and with electricity
Machine connects and with the gearbox of multiple traveling gears, which is characterized in that including：
Acquisition module, the current driving parameter information for obtaining vehicle；
Determining module, for according to the current driving parameter information, determining the target travel gear of vehicle；
Control module, when being used for the current driving gear difference in the target travel gear and the vehicle, then to the change
The traveling gear of fast case, the output rotating speed of the motor and output torque are controlled.
6. electric vehicle gear switching control according to claim 5, which is characterized in that control module includes：
First determination unit, for according to predetermined pair between the target travel gear of gearbox and the target requirement rotating speed of motor
It should be related to, determine the target requirement rotating speed of the motor；
First control unit, the output torque for controlling the motor are adjusted by current output torque to zero；
Second control unit, for when the output torque of the motor is adjusted to zero, controlling the traveling gear of the gearbox
Neutral gear is switched to by the current driving gear；
Third control unit, the output rotating speed for controlling the motor are turned by currently exporting adjustment of rotational speed to the target requirement
Speed makes the difference between the input shaft rotating speed of the gearbox and output rotating speed be located within the scope of a desired speed value；
4th control unit, in output adjustment of rotational speed to the target requirement rotating speed of the motor, controlling the change
The traveling gear of fast case switches to the target travel gear by the neutral gear.
7. electric vehicle gear switching control according to claim 6, which is characterized in that the control module is also wrapped
It includes：
Second determination unit, for the corresponding gear speed ratio of target travel gear, target travel gear and electricity according to gearbox
Predetermined correspondence between the target requirement torque of machine determines the target requirement torque of the motor；
5th control unit switches to the target travel by the neutral gear for the traveling gear in the gearbox and keeps off
When position, the output torque of the motor is controlled by zero adjustment to the target requirement torque.
8. electric vehicle gear switching control according to claim 5, which is characterized in that the current driving parameter
Information includes the current driving speed of the vehicle, current throttle pedal aperture, current brake pedal state and current motor effect
Rate, determining module include：
Third determination unit, for being stepped on according to the current driving speed, the current throttle pedal aperture, the current brake
The predetermined correspondence of board status, the current motor efficiency and target travel gear determines the target travel gear；
The predetermined correspondence includes first part's correspondence and second part correspondence, and the first part, which corresponds to, closes
In system, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle pedal are opened
Degree, the current motor efficiency and the target travel gear correspond；It is described current in the second part correspondence
Brake pedal status is the state trampled, the current driving speed, the current throttle pedal aperture, the current motor
Efficiency and the target travel gear correspond；And first part's correspondence and the second part correspondence
In, the same current driving speed, the same current throttle pedal aperture, corresponding to the same current motor efficiency
The target travel gear is different.
9. a kind of automobile, which is characterized in that filled including claim 5 to 8 any one of them electric vehicle gear switching control
It sets.
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| CN113650602A (en) * | 2021-09-23 | 2021-11-16 | 东风汽车有限公司东风日产乘用车公司 | Gear shifting method and device, vehicle and storage medium |
| CN113898732A (en) * | 2021-09-26 | 2022-01-07 | 柳工柳州传动件有限公司 | Gear shifting control method, gear shifting control system and loader |
| CN114604105A (en) * | 2022-04-11 | 2022-06-10 | 潍柴动力股份有限公司 | Control method for switching carrier frequencies of motor and related device |
| CN114604105B (en) * | 2022-04-11 | 2023-12-15 | 潍柴动力股份有限公司 | Control method and related device for carrier frequency switching of motor |
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