CN106468356A - Electric vehicle and its parking control method, automatic transmission - Google Patents
Electric vehicle and its parking control method, automatic transmission Download PDFInfo
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- CN106468356A CN106468356A CN201510508180.9A CN201510508180A CN106468356A CN 106468356 A CN106468356 A CN 106468356A CN 201510508180 A CN201510508180 A CN 201510508180A CN 106468356 A CN106468356 A CN 106468356A
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- electric vehicle
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- vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2312/00—Driving activities
- F16H2312/12—Parking
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of parking control method of electric vehicle, comprise the following steps：S1, when gear signal is detected, judges according to gear signal whether the current gear of electric vehicle is P shelves；S2, if it is determined that the current gear of electric vehicle is P shelves, then the detection speed of electric vehicle and the gradient of electric vehicle present road；S3, when the gradient that the speed of electric vehicle is less than or equal to preset vehicle speed and electric vehicle present road is more than or equal to the first preset value, controls the electronic brake EPB system execution locking order of electric vehicle；S4, after the completion of EPB system locking, if the speed of electric vehicle is less than or equal to preset vehicle speed, controls P shelves to be in lockup state.This control method can effectively reduce the abnormal sound producing during unblock and car load shake, meet car load comfortableness and require.The invention also discloses a kind of automatic transmission of electric vehicle and a kind of electric vehicle.
Description
Technical field
The present invention relates to electric vehicle engineering field, particularly to a kind of parking control method of electric vehicle, a kind of electric vehicle
Automatic transmission and a kind of electric vehicle.
Background technology
In correlation technique, realize locking and the unblock of electric vehicle using line traffic control shifting control system, locked in electric vehicle
When only, locking states to are taken the output shaft of automatic transmission device by parking locking device, and is unlocked in electric vehicle
When, locking release conditions to are taken output shaft by parking locking device.
But, when can lead to car load that P shelves parking is carried out on ramp by above-mentioned line traffic control shifting control system, the weight of car load with
The form of load is carried on variator, produces greater impact to variator, makes user feel larger shake simultaneously.In addition,
When user's solution P shelves are travelled, when lockable mechanism unlocks out from variator ratchet, user can feel the larger shake of car load,
The very big unblock abnormal sound of simultaneous, produces violent impact to variator, has had a strong impact on comfortableness and the variator of car load
Life-span.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention mesh
Be propose a kind of can effectively reduce the abnormal sound producing during unblock and car load shake, meet car load comfortableness requirement electric motor car
Parking control method.
Further object is that proposing a kind of automatic transmission of electric vehicle.A further object of the present invention is to carry
Go out a kind of electric vehicle.
For reaching above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of parking control method of electric vehicle, including following
Step：S1, when gear signal is detected, judges according to described gear signal whether the current gear of electric vehicle is P shelves；
S2, if it is determined that the current gear of described electric vehicle is P shelves, then detects the speed of described electric vehicle and described electric vehicle
It is presently in the gradient of road；S3, when the speed of described electric vehicle is less than or equal to preset vehicle speed and described electric vehicle is current
When the gradient of residing road is more than or equal to the first preset value, control EPB (the Electrical Parking of described electric vehicle
Brake, electronic brake) system execution locking order；S4, after the completion of described EPB system locking, if described electricity
The speed of motor-car is less than or equal to described preset vehicle speed, then control P shelves to be in lockup state.
The parking control method of electric vehicle according to embodiments of the present invention, when gear signal is detected, sentences according to gear signal
Whether the current gear of disconnected electric vehicle is P shelves, if it is determined that the current gear of electric vehicle is P shelves, then detects electric vehicle
Speed and electric vehicle be presently in the gradient of road, when the speed of electric vehicle is less than or equal to preset vehicle speed and electric vehicle
When the gradient being presently in road is more than or equal to the first preset value, control the EPB system execution locking order of electric vehicle,
After the completion of EPB system locking, if the speed of electric vehicle is less than or equal to preset vehicle speed, P shelves are controlled to be in lockup state,
So that electric vehicle completes parking.Due to using EPB system by during wheel lock up so that the load of car load is undertaken by brake disc,
Now variator is in Light Condition, and the structural principle of P shelves is the parking realizing electric vehicle by blocking the gear of variator,
Therefore, the mechanism of P shelves and variator can be made to be in zero load by the parking control method of the electric vehicle of the embodiment of the present invention
State, is not all subject to the carrying of car load, does not therefore interfere with the comfortableness of user in P shelves solution locking when P shelves solution locking.
And in the parking method of traditional electric vehicle, EPB system is not involved in the solution locking of P shelves so that the carrying of car load all passes
It is delivered to the gear mechanism of variator, the gear of variator will be blocked in P shelves locking, so that the carrying of car load is delivered to
In the mechanism of P shelves, therefore P shelves can carry load to complete when unlocking, when particularly steep gradient (variator load is big) unlocks, user
Obvious abnormal sound and car load shake can be felt, reduce the comfortableness of car load.
According to one embodiment of present invention, if being non-P according to the current gear that described gear signal judges described electric vehicle
During shelves, then P shelves are controlled to be in released state.
According to one embodiment of present invention, in step s3, when the speed of described electric vehicle is less than or equal to described presetting
During speed, if the gradient that described electric vehicle is presently in road is in less than described first preset value or described EPB system
Malfunction, then directly control P shelves to be in lockup state.
According to one embodiment of present invention, in step s3, when the speed of described electric vehicle is less than or equal to described presetting
During speed, if the gradient that described electric vehicle is presently in road is more than the second preset value, control after time delay first Preset Time
Make described EPB system and execute described locking order, wherein, described second preset value is more than described first preset value.
According to one embodiment of present invention, in the second Preset Time when described EPB system executes described locking order, such as
Fruit detects non-P shelves gear signal, then control P shelves to be in released state.
According to one embodiment of present invention, in step s 4, if the speed of described electric vehicle is more than described preset vehicle speed
And non-P shelves gear signal is detected, then control P shelves to be in released state.
According to one embodiment of present invention, during described EPB system carries out locking, control the motor of described vehicle defeated
Go out predetermined torque so that described vehicle remains static, until described EPB system locking completes or described vehicle is in static shape
The time of state reaches the 3rd Preset Time.
According to one embodiment of present invention, during described EPB system carries out locking, control ESP (Electronic
Stability Program, body electronics is stable) system carries out pressurize so that described vehicle remains static, until described
The time that EPB system locking completes or described vehicle remains static reaches the 3rd Preset Time.
For reaching above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of automatic transmission of electric vehicle, in its execution
The parking control method of the electric vehicle stated.
The parking control method by above-mentioned electric vehicle for the automatic transmission of this electric vehicle, realizes EPB system and P shelves connection
Dynamic lower P shelves parking it is ensured that when on steep gradient, will not damage because of load excessive, when ensureing that P shelves unlock simultaneously, user
Will not feel significantly to unlock abnormal sound and car load shake, meet car load comfortableness and require.
For reaching above-mentioned purpose, another aspect of the invention embodiment proposes a kind of electric vehicle, and it includes above-mentioned fluid drive
Device.
This electric vehicle by above-mentioned automatic transmission, be capable of P shelves parking under EPB system and the linkage of P shelves it is ensured that
When on steep gradient, user will not experience obvious shake, and when ensureing the unblock of P shelves, user will not feel significantly to solve simultaneously
Lock abnormal sound and car load shake, meet car load comfortableness and require.
Brief description
Fig. 1 is the flow chart of the parking control method of electric vehicle according to embodiments of the present invention.
Fig. 2 is the flow chart of the parking control method of electric vehicle according to an embodiment of the invention.
Fig. 3 is the flow chart of the parking control method of electric vehicle in accordance with another embodiment of the present invention.
Fig. 4 is the flow chart of the parking control method of the electric vehicle according to another embodiment of the present invention.
Fig. 5 is the flow chart of the parking control method of the electric vehicle according to further embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein identical from start to finish or
The element that similar label represents same or similar element or has same or like function.Below with reference to Description of Drawings
Embodiment is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
The parking control method of electric vehicle of proposition according to embodiments of the present invention, electric vehicle to be described with reference to the accompanying drawings
Automatic transmission and electric vehicle.
Fig. 1 is the flow chart of the parking control method of electric vehicle according to embodiments of the present invention.As shown in figure 1, this electric motor car
Parking control method comprise the following steps：
S1, when gear signal is detected, judges according to gear signal whether the current gear of electric vehicle is P shelves.
S2, if it is determined that the current gear of electric vehicle is P shelves, then the speed of detection electric vehicle and electric vehicle present road
The gradient.Wherein, the gradient includes the gradient when gradient and descending when going up a slope.
According to one embodiment of present invention, if the current gear of electric vehicle is judged for non-P shelves according to gear signal,
P shelves are controlled to be in released state.It is understood that the gear of usual electric vehicle includes P shelves, R shelves, N shelves and D shelves
Four gears, when electric vehicle is in any one gear in R shelves, N shelves or D shelves, all represent the current of electric vehicle
Gear is non-P shelves.
S3, when the gradient that the speed of electric vehicle is less than or equal to preset vehicle speed and electric vehicle present road is more than or equal to first
During preset value, control the EPB system execution locking order of electric vehicle.Wherein, preset vehicle speed and the first preset value can bases
Practical situation is demarcated, and it is smaller that usual preset vehicle speed can be arranged, and for example preset vehicle speed is less than or equal to 5km/h, main
Consider the comfortableness impression such as deceleration shock, shake and abnormal sound etc. of produced deceleration and user during P shelves locking,
First preset value can determine according to the gradient lower threshold allowing EPB system and P shelves coordinated signals electric vehicle parking.
According to one embodiment of present invention, in this step, when the speed of electric vehicle is less than or equal to preset vehicle speed, such as
The gradient that fruit electric vehicle is presently in road is in malfunction less than the first preset value or EPB system, then directly control P
Shelves are in lockup state.That is, when electric vehicle parking on ramp, if the speed of electric vehicle is less than or equal to
Preset vehicle speed, and road residing for electric vehicle the ratio of slope less when, then do not need control electric vehicle EPB system execution
Locking order, but directly control P shelves to be in lockup state, now, because the gradient is smaller, it is applied to the change of electric vehicle
Load on fast device is smaller, therefore, shake and abnormal sound will not occur when controlling P shelves solution locking.
According to one embodiment of present invention, in this step, when the speed of electric vehicle is less than or equal to preset vehicle speed, such as
The gradient that fruit electric vehicle is presently in road is more than the second preset value, then control the execution of EPB system after time delay first Preset Time
Locking order, is that the time delay of action by from transmission EPB system execution locking order to EPB system produces between this time delay,
Wherein, the second preset value is more than the first preset value, and the second preset value is to allow to postpone the first Preset Time transmission EPB system execution
The gradient threshold value of locking order.It is understood that from send EPB system execution locking order to EPB system start action it
Between there is certain time delay, if the gradient of road residing for electric vehicle is too big, because the presence of delay time makes EPB system
System is also not carried out action electric vehicle and has occurred and that slipping by slope, and therefore when the gradient is larger, needs to ensure that the first Preset Time can not be too
Long.
According to one embodiment of present invention, in the second Preset Time when EPB system executes locking order, if detected
Non- P shelves gear signal, then control P shelves to be in released state.Wherein, the second Preset Time is less than EPB system from execution locking
Order starts the time completing to locking, so that during EPB system execution locking, when receiving non-P shelves gear signal,
Directly exit EPB system locking process.
S4, after the completion of EPB system locking, if the speed of electric vehicle is less than or equal to preset vehicle speed, controls at P shelves
In lockup state.
According to one embodiment of present invention, in this step, if the speed of electric vehicle is more than preset vehicle speed and detects non-
P shelves gear signal, then control P shelves to be in released state.
Briefly, the present invention realizes parking on ramp for the electric vehicle by way of EPB system with the linkage of P shelves, to drop
During low P shelves unblock, produced abnormal sound and car load shake, meet the comfortableness demand of user.Wherein, when the speed of electric vehicle
Less than or equal to preset vehicle speed and road residing for electric vehicle the gradient be more than or equal to the first preset value when, if user carries out P
Shelves parking, then motor controller controls EPB system and the linkage of P shelves, first control the execution locking order of EPB system, then control
P shelves are in lockup state, thus completing the parking of electric vehicle, due to using EPB system by during wheel lock up so that car load
Load undertaken by brake disc, now variator is in Light Condition, and the structural principle of P shelves is the tooth by blocking variator
Wheel realizes the parking of electric vehicle, therefore, the mechanism of P shelves and variator can be made to be in zero load by embodiments of the invention
State, is not all subject to the carrying of car load, does not therefore interfere with the comfortableness of user in P shelves solution locking when P shelves solution locking.
And in the parking method of traditional electric vehicle, EPB system is not involved in the solution locking of P shelves so that the carrying of car load all passes
It is delivered to the gear mechanism of variator, the gear of variator will be blocked in P shelves locking, so that the carrying of car load is delivered to
In the mechanism of P shelves, therefore P shelves can carry load to complete when unlocking, when particularly steep gradient (variator load is big) unlocks, user
Obvious abnormal sound and car load shake can be felt, reduce the comfortableness of car load.
Specifically, as shown in Fig. 2 the parking control process of electric vehicle comprises the following steps：
S101, judges whether to receive gear signal.If it is, execution step S102；If not, return to step S101, continue
Continuous judgement.
For example, in electric vehicle, gear signal can have been detected whether by electric machine controller, and it has been judged.
S102, judges whether current gear is P shelves.If it is, execution step S103；If not, execution step S115.
S103, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
In or be equal to set permission P shelves locking electric vehicle speed upper limit threshold.If it is, execution step S104；If not,
Return to step S101, continues to judge.
S104, judges whether gradient I is less than the first preset value Imin or the EPB system failure, and that is, electric vehicle is presently in
Whether gradient I on road is less than the permission EPB system of setting and the gradient lower threshold of P shelves linkage, or EPB system is in event
Barrier state.If it is, execution step S105；If not, execution step S106.
S105, sends " target gear is P shelves ".
S106, judges whether gradient I is less than or equal to the second preset value Imax, that is, judge whether gradient I of present road is less than
Or it is equal to the gradient threshold value allowing to postpone to send target gear setting.If it is, execution step S108；If not, executing step
Rapid S107.
S107, time delay the first preset time T 1 sends " target gear is P shelves ".
S108, sends " target gear is P shelves ".
S109, sends " EPB pull-up order ", that is, control the EPB system execution locking order of electric vehicle.
Whether S110, judge EPB pull-up completely, that is, judge whether the EPB system of electric vehicle has completed locking.If
It is, execution step S112；If it is not, then entry time cycle criterion, execution step S111.
S111, determines whether D/R/N gear signal.If it is, execution step S115；If not, return to step S110,
Continue to judge.
It should be noted that time cycle criterion refers in the second preset time T 2, step S110 and step S111 be continued
Cycle criterion, and when the second Preset Time reaches, stop the judgement to step S110 and step S111 execution step S112.
S112, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
Speed upper limit threshold in the electric vehicle of the permission P shelves locking setting.If it is, execution step S113；If not, execution
Step S114.
S113, sends " P shelves locking order ", controls P shelves to be in lockup state.
S114, determines whether D/R/N gear signal.If it is, execution step S115；If not, return to step S112,
Continue to judge.
S115, sends " P shelves unlocking command ", that is, control P shelves to be in released state, and send respective objects gear.
Knowable to above-mentioned steps, in order to avoid the shake of produced abnormal sound and variator when P shelves unlock, when user is on larger slope
On road during parking, by the linkage of EPB system and P shelves so that P shelves locking, i.e. locking P after first locking EPB system, thus
Realize the parking of electric vehicle.And, by the linkage of EPB system and P shelves so that during P shelves locking, if EPB
System be in malfunction or in a long time EPB system cannot locking, then directly control P shelves locking, so that electric motor car
Can normally parking it is ensured that the safety of user and electric vehicle.
In addition, when user's parking on steep gradient, because locking on steep gradient for the EPB system is slow, in EPB system
It is likely to occur situation about slipping after vehicle with P shelves linkage process, therefore, ensure that EPB system is being entered by increasing corresponding measure
During row locking, vehicle remains static.
According to one embodiment of present invention, during EPB system carries out locking, control ESP system carry out pressurize so that
Vehicle remains static, and reaches the 3rd Preset Time until the time that EPB system locking completes or vehicle remains static.
For example, during EPB system carries out locking, pressurize can be carried out by ESP system so that electric vehicle be in static
State.Wherein, ESP system carries out the electric vehicle that pressurize refers to be provided with ESP system, and its brake system has pressure accumulation function.
Briefly, pressure accumulation function is exactly that entire car controller can as needed, when driver does not touch on the brake, from certain wheel of trend
Brake pipe pressurization so that this wheel produce brake force.
Specifically, as shown in figure 3, the parking control process of electric vehicle comprises the following steps：
S301, judges whether to receive gear signal.If it is, execution step S302；If not, return to step S301, continue
Continuous judgement.
S302, judges whether current gear is P shelves.If it is, execution step S304；If not, execution step S303.
S303, sends " P shelves unlocking command ", sends respective objects gear.
S304, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
In or be equal to set permission P shelves locking electric vehicle speed upper limit threshold.If it is, execution step S305；If not,
Return to step S301, continues to judge.
S305, sends " target gear is P shelves ".
S306, judges whether gradient I is more than or equal to the first preset value Imin and EPB system failure, that is, judge electric motor car
Be presently in gradient lower threshold that whether gradient I of road linked with P shelves more than or equal to the permissions EPB system setting and
Whether EPB system is in unfaulty conditions.If it is, execution step S307；If not, execution step S311.
S307, sends " EPB pull-up order ".
S308, ESP system carries out pressurize it is ensured that stationary vehicle.
Whether S309, judge the static retention time more than the 3rd preset time T 3 or the whether complete pull-up of EPB.If it is,
Execution step S310；If not, return to step S308.
S310, ESP system stops pressurize.
S311, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
Speed upper limit threshold in the electric vehicle of the permission P shelves locking setting.If it is, execution step S312；If not, returning
Step S301, continues to judge.
S312, sends " P shelves locking order ", controls P shelves to be in lockup state.
According to another embodiment of the invention, during EPB system carries out locking, control the motor output of vehicle default
, so that vehicle remains static, until the time that EPB system locking completes or vehicle remains static, to reach the 3rd pre- for moment of torsion
If the time, wherein, the 3rd Preset Time executes the time threshold of locking action for EPB system, and this Preset Time can not be oversize,
Increasing otherwise can be produced slip by slope.There is a process because ESP system carries out pressurize, incipient stage pressure value is little, severity of braking
Less, therefore entire car controller can be according to required car load moment of torsion when static in current hill grade calculating car load ramp, simultaneously according to EPB
The real-time pressure value of system calculates its severity of braking, and both differences obtain the offset of Motor torque, controls the motor output of vehicle
Predetermined torque is so that vehicle remains static.
Specifically, as shown in figure 4, the parking control process of electric vehicle comprises the following steps：
S201, judges whether to receive gear signal.If it is, execution step S202；If not, return to step S201, continue
Continuous judgement.
S202, judges whether current gear is P shelves.If it is, execution step S204；If not, execution step S203.
S203, sends " P shelves unlocking command ", and sends respective objects gear.
S204, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
In or be equal to set permission P shelves locking electric vehicle speed upper limit threshold.If it is, execution step S205；If not,
Return to step S201, continues to judge.
S205, sends " target gear is P shelves ".
S206, judges whether gradient I is more than or equal to the first preset value Imin and EPB system failure, and that is, electric vehicle is worked as
Whether gradient I of front residing road is more than or equal to the permission EPB system of setting and the gradient lower threshold of P shelves linkage and EPB
Whether system is in unfaulty conditions.If it is, execution step S207；If not, execution step S211.
S207, sends " EPB pull-up order ".
S208, motor output predetermined torque is it is ensured that stationary vehicle.
Whether S209, judge the static retention time more than the 3rd preset time T 3 or the whether complete pull-up of EPB.If it is,
Execution step S210；If not, return to step S208.
S210, motor stops power output.
S211, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
Speed upper limit threshold in the electric vehicle of the permission P shelves locking setting.If it is, execution step S212；If not, returning
Step S201, continues to judge.
S212, sends " P shelves locking order ", controls P shelves to be in lockup state.
Further, a specific example according to the present invention, as shown in figure 5, the parking control process of electric vehicle include with
Lower step：
S401, judges whether to receive gear signal.If it is, execution step S402；If not, return to step S401, continue
Continuous judgement.In electric vehicle, gear signal can be detected whether by electric machine controller, and it has been judged.
S402, judges whether current gear is P shelves.If it is, execution step S403；If not, execution step S417.
S403, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
In or be equal to set permission P shelves locking electric vehicle speed upper limit threshold.If it is, execution step S404；If not,
Return to step S401, continues to judge.
S404, judges whether gradient I is less than the first preset value Imin or the EPB system failure, and that is, electric vehicle is presently in
Whether gradient I on road is less than the permission EPB system of setting and the gradient lower threshold of P shelves linkage, or EPB system is in event
Barrier state.If it is, execution step S405；If not, execution step S406.
S405, sends " target gear is P shelves ".
S406, judges whether gradient I is less than or equal to the second preset value Imax, that is, judge whether gradient I of present road is less than
Or it is equal to the gradient threshold value allowing to postpone to send target gear setting.If it is, execution step S408；If not, executing step
Rapid S407.
S407, time delay the first preset time T 1 sends " target gear is P shelves ".
S408, sends " target gear is P shelves ".
S409, sends " EPB pull-up order ", that is, control the EPB system execution locking order of electric vehicle.
S410, motor output predetermined torque or ESP system stop pressurize, to ensure stationary vehicle.
Whether S411, judge the static retention time more than the 3rd preset time T 3 or the whether complete pull-up of EPB.If it is,
Execution step S413；If it is not, then entry time cycle criterion, execution step S412.Wherein, time cycle criterion refers to
In the second preset time T 2, step S410 and step S411 persistent loop are judged, and when the second Preset Time reaches,
Stop the judgement to step S410 and step S411 execution step S413.
S413, motor stops power output or ESP system stops pressurize.
S414, judges whether vehicle velocity V is less than or equal to preset vehicle speed Vmax, that is, judge whether the vehicle velocity V of current electric vehicle is little
Speed upper limit threshold in the electric vehicle of the permission P shelves locking setting.If it is, execution step S416；If not, execution
Step S415.
S415, determines whether D/R/N gear signal.If it is, execution step S417；If not, return to step S414,
Continue to judge.
S416, sends " P shelves locking order ", controls P shelves to be in lockup state.
S417, sends " P shelves unlocking command ", that is, control P shelves to be in released state, and send respective objects gear.
In sum, the parking control method of electric vehicle according to embodiments of the present invention, when gear signal is detected, according to
Gear signal judges whether the current gear of electric vehicle is P shelves, if it is determined that the current gear of electric vehicle is P shelves, then examines
Survey the speed of electric vehicle and electric vehicle is presently in the gradient of road, when the speed of electric vehicle is less than or equal to preset vehicle speed
And electric vehicle be presently in road the gradient be more than or equal to the first preset value when, control electric vehicle EPB system execute lock
Only order, after the completion of EPB system locking, if the speed of electric vehicle is less than or equal to preset vehicle speed, control at P shelves
In lockup state, thus the P shelves parking of electric vehicle is realized by EPB system and the linkage of P shelves it is ensured that when on steep gradient,
Automatic transmission will not be damaged because of load excessive, when ensureing the unblock of P shelves simultaneously, user will not feel significantly to unlock abnormal sound and
Car load is shaken, and meets car load comfortableness and requires.
For reaching above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of automatic transmission of electric vehicle, in its execution
The parking control method of the electric vehicle stated.
The parking control method by above-mentioned electric vehicle for the automatic transmission of this electric vehicle, realizes EPB system and P shelves connection
Dynamic lower P shelves parking it is ensured that when on steep gradient, will not damage because of load excessive, when ensureing that P shelves unlock simultaneously, user
Will not feel significantly to unlock abnormal sound and car load shake, meet car load comfortableness and require.
For reaching above-mentioned purpose, another aspect of the invention embodiment proposes a kind of electric vehicle, and it includes above-mentioned fluid drive
Device.
This electric vehicle by above-mentioned automatic transmission, be capable of P shelves parking under EPB system and the linkage of P shelves it is ensured that
When on steep gradient, user will not experience obvious shake, and when ensureing the unblock of P shelves, user will not feel significantly to solve simultaneously
Lock abnormal sound and car load shake, meet car load comfortableness and require.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ",
The orientation of instruction such as " clockwise ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship are based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of description the present invention and simplify description, rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " be only used for describe purpose, and it is not intended that instruction or hint relative importance or
Person implies the quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two,
Three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be machinery
Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two elements
Internal connection or the interaction relationship of two elements, limit unless otherwise clear and definite.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can
Being the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, first
Feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or tiltedly on
Side, or it is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " under
Side " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level
Highly it is less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specific example ",
Or the description of " some examples " etc. means specific features with reference to this embodiment or example description, structure, material or feature bag
It is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation's necessarily pin to above-mentioned term
To be identical embodiment or example.And, the specific features of description, structure, material or feature can any one or
Combine in an appropriate manner in multiple embodiments or example.Additionally, in the case of not conflicting, those skilled in the art
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is exemplary,
It is not considered as limiting the invention, those of ordinary skill in the art can enter to above-described embodiment within the scope of the invention
Row change, modification, replacement and modification.
Claims (10)
1. a kind of parking control method of electric vehicle is it is characterised in that comprise the following steps：
S1, when gear signal is detected, judges according to described gear signal whether the current gear of electric vehicle is P shelves；
S2, if it is determined that the current gear of described electric vehicle is P shelves, then detects the speed of described electric vehicle and described electronic
Vehicle is presently in the gradient of road；
S3, when the speed of described electric vehicle be less than or equal to preset vehicle speed and described electric vehicle be presently in road the gradient big
In or be equal to the first preset value when, control described electric vehicle electronic brake EPB system execution locking order；
S4, after the completion of described EPB system locking, if the speed of described electric vehicle is less than or equal to described preset vehicle speed,
P shelves are then controlled to be in lockup state.
If 2. the parking control method of electric vehicle as claimed in claim 1 is it is characterised in that believe according to described gear
When number judging the current gear of described electric vehicle for non-P shelves, then P shelves are controlled to be in released state.
3. the parking control method of electric vehicle as claimed in claim 1 it is characterised in that in step s3, when described
When the speed of electric vehicle is less than or equal to described preset vehicle speed, if the gradient that described electric vehicle is presently in road is less than institute
State the first preset value or described EPB system is in malfunction, then directly control P shelves to be in lockup state.
4. the parking control method of electric vehicle as claimed in claim 1 it is characterised in that in step s3, when described
When the speed of electric vehicle is less than or equal to described preset vehicle speed, if the gradient that described electric vehicle is presently in road is more than the
Two preset values, then control described EPB system to execute described locking order, wherein, described second is pre- after time delay first Preset Time
If value is more than described first preset value.
5. the parking control method of the electric vehicle as described in claim 1 or 4 is it is characterised in that in described EPB system
Executing in the second Preset Time during described locking order, if non-P shelves gear signal is detected, controlling P shelves to be in unblock
State.
6. the parking control method of electric vehicle as claimed in claim 1 it is characterised in that in step s 4, if institute
The speed stating electric vehicle is more than described preset vehicle speed and non-P shelves gear signal is detected, then control P shelves to be in released state.
7. the parking control method of the electric vehicle as any one of claim 1-6 is it is characterised in that in described EPB
During system carries out locking, the motor output predetermined torque controlling described vehicle is so that described vehicle remains static, directly
Complete to described EPB system locking or time that described vehicle remains static reaches the 3rd Preset Time.
8. the parking control method of the electric vehicle as any one of claim 1-6 is it is characterised in that in described EPB
During system carries out locking, control body electronics to stablize ESP system and carry out pressurize so that described vehicle remains static,
Reach the 3rd Preset Time until the time that described EPB system locking completes or described vehicle remains static.
9. a kind of automatic transmission of electric vehicle is it is characterised in that execute the electricity as any one of claim 1-8
The parking control method of motor-car.
10. a kind of electric vehicle is it is characterised in that include automatic transmission as claimed in claim 9.
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| CN201510508180.9A CN106468356B (en) | 2015-08-18 | 2015-08-18 | Electric vehicle and its parking control method, automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510508180.9A CN106468356B (en) | 2015-08-18 | 2015-08-18 | Electric vehicle and its parking control method, automatic transmission |
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| CN106468356A true CN106468356A (en) | 2017-03-01 |
| CN106468356B CN106468356B (en) | 2019-05-17 |
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| CN201510508180.9A Active CN106468356B (en) | 2015-08-18 | 2015-08-18 | Electric vehicle and its parking control method, automatic transmission |
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| CN107023678A (en) * | 2017-03-21 | 2017-08-08 | 北京长城华冠汽车科技股份有限公司 | The parking method and device of electric vehicle |
| CN108177557A (en) * | 2017-11-20 | 2018-06-19 | 浙江亚太机电股份有限公司 | A kind of electric vehicle P keeps off parking control system |
| CN110103913A (en) * | 2019-05-31 | 2019-08-09 | 重庆长安新能源汽车科技有限公司 | A kind of new-energy automobile parking control method, device, system and automobile |
| CN110345243A (en) * | 2019-06-26 | 2019-10-18 | 江铃汽车股份有限公司 | Automobile gears control method, system, car-mounted terminal and storage medium |
| CN111089167A (en) * | 2018-10-23 | 2020-05-01 | 广州汽车集团股份有限公司 | Control method, device, controller and system for vehicle P-gear parking and vehicle |
| CN111469830A (en) * | 2019-01-24 | 2020-07-31 | 广州汽车集团股份有限公司 | Electronic parking control method, device, controller, system and vehicle |
| CN111895085A (en) * | 2020-07-13 | 2020-11-06 | 东风汽车集团有限公司 | P-gear parking system control method and system and automobile |
| CN112124266A (en) * | 2020-09-16 | 2020-12-25 | 广州汽车集团股份有限公司 | Parking control method, parking control device and storage medium |
| CN112959974A (en) * | 2021-03-28 | 2021-06-15 | 大运汽车股份有限公司 | Gear unlocking control method for pure electric vehicle |
| CN113264026A (en) * | 2021-06-15 | 2021-08-17 | 东风汽车集团股份有限公司 | New energy automobile electron parking control system |
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| CN114906113A (en) * | 2021-02-09 | 2022-08-16 | 广州汽车集团股份有限公司 | Electronic parking system and control method thereof |
| CN117207980A (en) * | 2023-11-07 | 2023-12-12 | 北京易控智驾科技有限公司 | Control method and device for unmanned vehicle, electronic equipment and storage medium |
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| CN107023678A (en) * | 2017-03-21 | 2017-08-08 | 北京长城华冠汽车科技股份有限公司 | The parking method and device of electric vehicle |
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| CN111089167A (en) * | 2018-10-23 | 2020-05-01 | 广州汽车集团股份有限公司 | Control method, device, controller and system for vehicle P-gear parking and vehicle |
| CN111469830B (en) * | 2019-01-24 | 2021-06-25 | 广州汽车集团股份有限公司 | Electronic parking control method, device, controller, system and vehicle |
| CN111469830A (en) * | 2019-01-24 | 2020-07-31 | 广州汽车集团股份有限公司 | Electronic parking control method, device, controller, system and vehicle |
| CN110103913A (en) * | 2019-05-31 | 2019-08-09 | 重庆长安新能源汽车科技有限公司 | A kind of new-energy automobile parking control method, device, system and automobile |
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| CN113446392A (en) * | 2020-03-27 | 2021-09-28 | 广州汽车集团股份有限公司 | Shift-by-wire control method, shift-by-wire device and system |
| CN111895085A (en) * | 2020-07-13 | 2020-11-06 | 东风汽车集团有限公司 | P-gear parking system control method and system and automobile |
| CN112124266A (en) * | 2020-09-16 | 2020-12-25 | 广州汽车集团股份有限公司 | Parking control method, parking control device and storage medium |
| CN114906113A (en) * | 2021-02-09 | 2022-08-16 | 广州汽车集团股份有限公司 | Electronic parking system and control method thereof |
| CN112959974A (en) * | 2021-03-28 | 2021-06-15 | 大运汽车股份有限公司 | Gear unlocking control method for pure electric vehicle |
| CN113264026A (en) * | 2021-06-15 | 2021-08-17 | 东风汽车集团股份有限公司 | New energy automobile electron parking control system |
| CN114001150A (en) * | 2021-10-25 | 2022-02-01 | 安徽江淮汽车集团股份有限公司 | P-gear parking control method and device of automatic gearbox and vehicle |
| CN114001150B (en) * | 2021-10-25 | 2022-12-02 | 安徽江淮汽车集团股份有限公司 | P-gear parking control method and device of automatic gearbox and vehicle |
| CN117207980A (en) * | 2023-11-07 | 2023-12-12 | 北京易控智驾科技有限公司 | Control method and device for unmanned vehicle, electronic equipment and storage medium |
| CN117207980B (en) * | 2023-11-07 | 2024-03-19 | 北京易控智驾科技有限公司 | Control method and device for unmanned vehicle, electronic equipment and storage medium |
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