CN108501953B - A kind of electric car gear method for handover control, device and automobile - Google Patents
A kind of electric car gear method for handover control, device and automobile Download PDFInfo
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- CN108501953B CN108501953B CN201810611589.7A CN201810611589A CN108501953B CN 108501953 B CN108501953 B CN 108501953B CN 201810611589 A CN201810611589 A CN 201810611589A CN 108501953 B CN108501953 B CN 108501953B
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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
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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
- 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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- 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 car gear method for handover control, device and electric cars, cause the driving force specislity of vehicle and drive efficiency poor to solve the problems, such as that electric car not can be carried out gear switching in the prior art.The technical solution of the electric car gear method for handover control are as follows: 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 revolving 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 car gear method for handover control, device and
Automobile.
Background technique
Being constantly progressive and develop with new-energy automobile technology, it is also higher and higher to the performance requirement of electric car, no
It requires nothing more than and realizes the basic driving functions of electric car, and the dynamic property for electric car, economy, driver comfort, behaviour
Handing stability requires higher and higher.Core component one of of the electric driving control system as electric car, configurations will be right
These performances generate apparent influence.
For electric car, since the peak torque of motor and the revolving speed section of maximum power are all very wide, from motor
Operation start can maximum output torque, and motor can be continued in high revolving speed section；Furthermore motor is most
Big output power is also able to maintain very wide revolving 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 car 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.
Summary of the invention
The purpose of the present invention is to provide a kind of electric car gear method for handover control, device and automobiles, existing to solve
Having electric car in technology not can be carried out gear switching leads to the driving force specislity of vehicle and the poor problem of drive efficiency.
The technical solution of the present invention is as follows:
The present invention provides a kind of electric car gear method for handover control, are applied to electric car, the electric car
Including motor and it is connected to motor and there are multiple gearboxes for travelling gears, comprising:
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 to the traveling of the gearbox
Gear, the output revolving 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 revolving speed of the motor and output torque are controlled includes:
According to the predetermined corresponding relationship between the target travel gear of gearbox and the target requirement revolving speed of motor, institute is determined
State the target requirement revolving speed of motor；
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 switches to neutral gear；
The output revolving speed for controlling the motor is adjusted by currently exporting revolving speed to the target requirement revolving speed, makes the speed change
Difference between the input shaft rotating speed and output shaft revolving speed of case is located within the scope of a desired speed value；
When the output revolving speed of the motor is adjusted to the target requirement revolving speed, the traveling gear of the gearbox is controlled
The target travel gear is switched to by the neutral 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 revolving speed of the motor and output torque are controlled further include:
It is turned round according to the target requirement of the target travel gear of gearbox, the corresponding gear speed ratio of target travel gear and motor
Predetermined corresponding relationship between square determines the target requirement torque of the motor；
When the traveling gear of the gearbox switches to the target travel gear by the neutral gear, described in control
The output torque of motor is 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 opening, the current brake pedal state, described work as
The predetermined corresponding relationship of front motor efficiency and target travel gear determines the target travel gear；
The predetermined corresponding relationship includes first part's corresponding relationship and second part corresponding relationship, the first part pair
In should being related to, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle are stepped on
Plate aperture, the current motor efficiency and the target travel gear correspond；It is described in the second part corresponding relationship
Current brake pedal state is the state trampled, the current driving speed, the current throttle pedal opening, described current
Electric efficiency and the target travel gear correspond；And first part's corresponding relationship and the second part are corresponded to and are closed
In system, the same current driving speed, the same current throttle pedal opening, corresponding to the same current motor efficiency
The target travel gear it is different.
According to another aspect of the present invention, the present invention also provides a kind of electric car gear switching control, applications
In electric car, the electric car includes motor and is connected to motor and has the gearboxes of multiple traveling gears, comprising:
Module is obtained, for obtaining the current driving parameter information of vehicle；
Determining module, for determining the target travel gear of vehicle according to the current driving parameter information；
Control module, in the current driving gear difference of the target travel gear and the vehicle, then to institute
The traveling gear of gearbox, the output revolving speed of the motor and output torque is stated to be controlled.
Preferably, control module includes:
First determination unit, for according to pre- between the target travel gear of gearbox and the target requirement revolving speed of motor
Determine corresponding relationship, determines the target requirement revolving 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 controlling the traveling of the gearbox when the output torque of the motor is adjusted to zero
Gear switches to neutral gear by the current driving gear；
Third control unit, the output revolving speed for controlling the motor are adjusted by currently exporting revolving speed to target need
Revolving speed is sought, is located at the difference between the input shaft rotating speed of the gearbox and output shaft revolving speed within the scope of one desired speed value；
4th control unit when adjusting for the output revolving speed in the motor to the target requirement revolving speed, controls institute
The traveling gear for stating gearbox switches to the target travel gear by the neutral gear.
Preferably, the control module further include:
Second determination unit, for the corresponding gear speed ratio of target travel gear, target travel gear according to gearbox
Predetermined corresponding relationship between the target requirement torque of motor determines the target requirement torque of the motor；
5th control unit switches to the target line by the neutral gear for the traveling gear in the gearbox
When sailing gear, 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 according to the current driving speed, the current throttle pedal opening, the current system
The predetermined corresponding relationship of dynamic pedal state, the current motor efficiency and target travel gear, determines the target travel gear；
The predetermined corresponding relationship includes first part's corresponding relationship and second part corresponding relationship, the first part pair
In should being related to, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle are stepped on
Plate aperture, the current motor efficiency and the target travel gear correspond；It is described in the second part corresponding relationship
Current brake pedal state is the state trampled, the current driving speed, the current throttle pedal opening, described current
Electric efficiency and the target travel gear correspond；And first part's corresponding relationship and the second part are corresponded to and are closed
In system, the same current driving speed, the same current throttle pedal opening, corresponding to the same current motor efficiency
The target travel gear it is different.
According to another aspect of the present invention, the present invention also provides a kind of automobiles, cut including above-mentioned electric car gear
Change control device.
The invention has the benefit that
By according to the current driving speed of vehicle, current throttle pedal opening, 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 to the gearbox with multiple traveling gears is controlled with output revolving speed.Cause
And it can be controlled according to the actual operating mode of vehicle come the output torque and revolving speed of traveling gear and motor to gearbox
System, and then electric car cost is reduced, the driving force specislity and drive efficiency of vehicle are promoted, guarantees 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
Steady switching and comfort.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of electric car of the invention；
Fig. 2 is the flow chart of electric car gear method for handover control of the invention；
Fig. 3 is the flow chart of step 13 of the invention.
Specific embodiment
Referring to Fig.1 with Fig. 2, the present invention provides a kind of electric car gear method for handover control, are applied to electric car,
It is not installed with clutch on the electric car, in order to realize that the electric car for being not installed with clutch is able to carry out gear switching,
The electric car specifically includes: including transmission shaft 1, with 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 the driving force of motor 5 being transmitted to transmission shaft end, realize torque, revolving speed transmitting with
Conversion.Gear box control unit 3 is connected by communication line with full-vehicle control unit 4, for sending 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 be carried 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
The target requirement torque and target requirement rotary speed information of the sending motor 5 of machine control unit 6.
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
Driving force is to gearbox 2 out, 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 revolving 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 needing to carry out the shift of gearbox 2, and when determining to be shifted gears, by controlling 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 revolving speed adjustment, so that being not installed with the electricity of clutch
Electrical automobile can be realized the gear switching of gearbox 2, meets gear and steadily switches and comfort.
Specifically, referring to Fig. 2, the method include that
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 opening,
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 revolving 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 revolving 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 specifically: according to the current driving speed, the current throttle pedal opening, described current
The predetermined corresponding relationship of brake pedal status, the current motor efficiency and target travel gear determines the target travel gear
Position.
The predetermined corresponding relationship is obtained by test data, in the predetermined corresponding relationship, according to current
The predetermined corresponding relationship is divided into 2 parts by the difference of brake pedal status, in first part's corresponding relationship, current brake
Pedal state is the state trampled, current driving speed, current throttle pedal opening, current motor efficiency and target travel gear
Position corresponds；In second part corresponding relationship, current brake pedal state is the state that do not trampled, current driving vehicle
Speed, current throttle pedal opening, current motor efficiency and target travel gear correspond；And first part's corresponding relationship
In the second part corresponding relationship, the same current driving speed, the same current throttle pedal opening, same institute
It is different to state the target travel gear corresponding to current motor efficiency.
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 revolving speed of the motor and output torque are controlled.
Wherein, if target travel gear is identical as current driving gear, show that the gear for not needing to 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, referring to Fig. 3, step 13 is specifically included:
Step 131, according to the predetermined correspondence between the target travel gear of gearbox 2 and the target requirement revolving speed of motor 5
Relationship determines the target requirement revolving 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 revolving speed for controlling the motor 5 is adjusted by currently exporting revolving speed to the target requirement revolving speed,
It is located at the difference between the input shaft rotating speed and output shaft revolving speed of the gearbox 2 within the scope of one desired speed value.
Step 135, when the output revolving speed of the motor 5 is adjusted to the target requirement revolving 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 corresponding relationship 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 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 revolving 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.For example, travelling gear for gearbox as D gear
Gear, the range of speeds of corresponding target requirement revolving 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 electric
Machine 5 no longer provides driving force to gearbox 2, and cutting gearbox 2 is transferred to the driving force of transmission shaft 1 so that gearbox 2 it is subsequent
Steady and smooth switching is able to carry 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 successively switches to neutral gear and target travel gear is just able to achieve gear switching, and cannot directly carry out gear
Switching.
In step 134, the purpose of the adjustment of the output revolving speed of motor 5 is so that the input shaft end of gearbox 2 and
The revolving 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 it is more smooth reliable.In step 134, the output shaft revolving speed of gearbox 2 and the difference being transferred between axis revolving speed are the two difference
Absolute value.The desired speed value may range between 0 to 100 rev/min, wherein 0≤n≤100(n is revolving 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 enables the driving condition of vehicle to be converted into the state for meeting user demand.
By according to the current driving speed of vehicle, current throttle pedal opening, 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 revolving speed.Cause
And it can be controlled according to the actual operating mode of vehicle come the output torque and revolving speed of gear and motor 5 to gearbox 2
System, and then electric car cost is reduced, the driving force specislity and drive efficiency of vehicle are promoted, guarantees 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.
Referring to Fig. 3, according to another aspect of the present invention, the present invention also provides a kind of electric car gear switching control dresses
It sets, is applied to electric car, the electric car includes motor and is connected to motor and has the gearboxes of multiple traveling gears,
Include:
Module 101 is obtained, for obtaining the current driving parameter information of vehicle；
Determining module 102, for determining the target travel gear of vehicle according to current driving parameter information；
Control module 103, in the preceding traveling gear difference of the target travel gear and the vehicle, then to institute
The traveling gear of gearbox, the output revolving speed of the motor and output torque is stated to be controlled.
Preferably, control module includes:
First determination unit, for according to pre- between the target travel gear of gearbox and the target requirement revolving speed of motor
Determine corresponding relationship, determines the target requirement revolving 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 controlling the traveling of the gearbox when the output torque of the motor is adjusted to zero
Gear switches to neutral gear by the current driving gear；
Third control unit, the output revolving speed for controlling the motor are adjusted by currently exporting revolving speed to target need
Revolving speed is sought, is located at the difference between the input shaft rotating speed of the gearbox and output shaft revolving speed within the scope of one desired speed value；
4th control unit when adjusting for the output revolving speed in the motor to the target requirement revolving speed, controls institute
The traveling gear for stating gearbox switches to the target travel gear by the neutral gear.
Preferably, the control module further include:
Second determination unit, for the corresponding gear speed ratio of target travel gear, target travel gear according to gearbox
Predetermined corresponding relationship between the target requirement torque of motor determines the target requirement torque of the motor；
5th control unit switches to the target line by the neutral gear for the traveling gear in the gearbox
When sailing gear, 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 according to the current driving speed, the current throttle pedal opening, the current system
The predetermined corresponding relationship of dynamic pedal state, the current motor efficiency and target travel gear, determines the target travel gear；
The predetermined corresponding relationship includes first part's corresponding relationship and second part corresponding relationship, the first part pair
In should being related to, the current brake pedal state is the state that do not trampled, and the current driving speed, the current throttle are stepped on
Plate aperture, the current motor efficiency and the target travel gear correspond；It is described in the second part corresponding relationship
Current brake pedal state is the state trampled, the current driving speed, the current throttle pedal opening, described current
Electric efficiency and the target travel gear correspond；And first part's corresponding relationship and the second part are corresponded to and are closed
In system, the same current driving speed, the same current throttle pedal opening, corresponding to the same current motor efficiency
The target travel gear it is different.
Electric car gear switching control provided in an embodiment of the present invention is switched with above-mentioned electric car gear
The corresponding device of control method, all implementations in the above method can also reach suitable for the embodiment of the device
Identical technical effect.By according to the current driving speed of vehicle, current throttle pedal opening, 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 revolving speed
System.Therefore, it is possible to be carried out according to the actual operating mode of vehicle come the output torque of gear and motor to gearbox and revolving speed
Control, and then electric car cost is reduced, the driving force specislity and drive efficiency of vehicle are promoted, guarantees 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, cut including above-mentioned electric car gear
Change control device.
Claims (7)
1. a kind of electric car gear method for handover control, be applied to electric car, the electric car include motor and with electricity
Machine connection and the gearboxes with multiple traveling gears characterized by comprising
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 revolving speed of the motor and output torque are controlled；
The current driving parameter information includes the current driving speed of the vehicle, current throttle pedal opening, current brake
Pedal state and current motor efficiency, according to the current driving parameter information, the step of determining the target travel gear of vehicle
Include:
According to the current driving speed, the current throttle pedal opening, the current brake pedal state, the current electricity
The predetermined corresponding relationship of engine efficiency and target travel gear determines the target travel gear；
The predetermined corresponding relationship includes first part's corresponding relationship and second part corresponding relationship, and the first part is corresponding to close
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 corresponding relationship
Brake pedal status is the state trampled, the current driving speed, the current throttle pedal opening, the current motor
Efficiency and the target travel gear correspond；And first part's corresponding relationship and the second part corresponding relationship
In, the same current driving speed, the same current throttle pedal opening, corresponding to the same current motor efficiency
The target travel gear is different.
2. electric car 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 revolving speed to the traveling gear of the gearbox, the motor and output
The step of torque is controlled include:
According to the predetermined corresponding relationship between the target travel gear of gearbox and the target requirement revolving speed of motor, the electricity is determined
The target requirement revolving 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 revolving speed for controlling the motor is adjusted by currently exporting revolving speed to the target requirement revolving speed, makes the gearbox
Difference between input shaft rotating speed and output shaft revolving speed is located within the scope of a desired speed value；
When the output revolving speed of the motor is adjusted to the target requirement revolving speed, the traveling gear of the gearbox is controlled by institute
It states neutral gear and switches to the target travel gear.
3. electric car 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 revolving 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 corresponding relationship, 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
Torque is by zero adjustment to the target requirement torque out.
4. a kind of electric car gear switching control, be applied to electric car, the electric car include motor and with electricity
Machine connection and the gearboxes with multiple traveling gears characterized by comprising
Module is obtained, for obtaining the current driving parameter information of vehicle；
Determining module, for determining the target travel gear of vehicle according to the current driving parameter information；
Control module, in the current driving gear difference of the target travel gear and the vehicle, then to the change
The traveling gear of fast case, the output revolving speed of the motor and output torque are controlled；
The current driving parameter information includes the current driving speed of the vehicle, current throttle pedal opening, 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 opening, the current brake
The predetermined corresponding relationship of board status, the current motor efficiency and target travel gear determines the target travel gear；
The predetermined corresponding relationship includes first part's corresponding relationship and second part corresponding relationship, and the first part is corresponding to close
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 corresponding relationship
Brake pedal status is the state trampled, the current driving speed, the current throttle pedal opening, the current motor
Efficiency and the target travel gear correspond；And first part's corresponding relationship and the second part corresponding relationship
In, the same current driving speed, the same current throttle pedal opening, corresponding to the same current motor efficiency
The target travel gear is different.
5. electric car gear switching control according to claim 4, 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 revolving speed of motor
It should be related to, determine the target requirement revolving 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 controlling the traveling gear of the gearbox when the output torque of the motor is adjusted to zero
Neutral gear is switched to by the current driving gear；
Third control unit, the output revolving speed for controlling the motor are turned by currently exporting revolving speed and adjusting to the target requirement
Speed is located at the difference between the input shaft rotating speed of the gearbox and output shaft revolving speed within the scope of one desired speed value；
4th control unit controls the change when adjusting for the output revolving speed in the motor to the target requirement revolving speed
The traveling gear of fast case switches to the target travel gear by the neutral gear.
6. electric car gear switching control according to claim 5, 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 corresponding relationship 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.
7. a kind of automobile, which is characterized in that including the described in any item electric car gear switching control dresses of claim 4 to 6
It sets.
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| CN111751116B (en) * | 2019-03-27 | 2021-09-21 | 比亚迪股份有限公司 | Method and device for controlling vehicle line passing detection and vehicle |
| CN110053603B (en) * | 2019-04-25 | 2021-07-30 | 奇瑞汽车股份有限公司 | Shift control method and apparatus for electric vehicle |
| CN112572401B (en) * | 2019-09-30 | 2022-09-20 | 北汽福田汽车股份有限公司 | Vehicle control method and device, electronic equipment and vehicle |
| CN111038280B (en) * | 2019-12-23 | 2022-04-12 | 奇瑞新能源汽车股份有限公司 | Electric automobile gear shifting torque control method |
| CN113386579A (en) * | 2020-03-13 | 2021-09-14 | 北京新能源汽车股份有限公司 | Automobile driving control method and device and automobile |
| CN114677871B (en) * | 2021-02-23 | 2023-09-26 | 北京新能源汽车股份有限公司 | Method and device for controlling simulated engine speed |
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| CN113650602B (en) * | 2021-09-23 | 2022-10-18 | 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 |
| CN113898732B (en) * | 2021-09-26 | 2022-11-15 | 柳工柳州传动件有限公司 | Gear shifting control method, gear shifting control system and loader |
| 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 |
| CN115817201B (en) * | 2022-12-02 | 2024-08-13 | 中国重汽集团济南动力有限公司 | Method and system for calculating required gear of dump truck and electric automobile |
| CN117549899B (en) * | 2024-01-11 | 2024-05-03 | 徐州徐工汽车制造有限公司 | Vehicle shift control method, device, VCU, vehicle and storage medium |
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