CN106335487A - Electric parking brake (EPB) control method for electric car - Google Patents
Electric parking brake (EPB) control method for electric car Download PDFInfo
- Publication number
- CN106335487A CN106335487A CN201610861576.6A CN201610861576A CN106335487A CN 106335487 A CN106335487 A CN 106335487A CN 201610861576 A CN201610861576 A CN 201610861576A CN 106335487 A CN106335487 A CN 106335487A
- Authority
- CN
- China
- Prior art keywords
- parking
- epp
- epb
- vehicle
- delay time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
Abstract
The invention relates to the field of vehicle automatic control and in particular relates to a parking brake control method. An electric parking brake (EPB) control method for an electric car is characterized by carrying out following control after setting the delay time: from a driving state to a parking brake lock state, firstly carrying out lock operation on a vehicle by using an EPB system, waiting for the delay time and then sending a parking brake signal to an electric parking pawl (EPP) system by a vehicle control unit to carry out lock operation on the vehicle; and from the parking brake lock state to the driving state, firstly controlling the EPP system to be unlocked by the vehicle control unit after a brake pedal is depressed, waiting for the delay time and then unlocking the EPB system. The method has the beneficial effects that the reliability of the EPP system is improved by starting the EPB and EPP systems in sequence, thus avoiding seizure of the EPP system under the full load condition or the long ramp condition and eliminating abnormal sounds produced by parking on the short ramp and unlocking under the full load condition; and meanwhile, parking and unlocking can be smoothly carried out under the long ramp condition, thus improving the reliability of vehicle control.
Description
Technical field
The present invention relates to vehicle automation field, more particularly, to a kind of parking control method.
Background technology
Epp is the abbreviation of electric parking pawl, and Chinese entitled electronic parking ratchet, including axis of wheel rotation
Gear, ratchet and parking cam, described parking cam is furnished with cam spring, and described ratchet is furnished with return spring；Parking: rely on
The internal small machine of epp drives parking cam rotation, and parking cam, by the clearance between gear teeth of ratchet jacking vehicle wheel rotation shaft gear, is realized
Parking, such as runs into ratchet and just withstands on gear teeth tooth top, then ratchet reacts on cam, cam spring is compressed, and cam angle degree is protected
Hold constant, wait rotary shaft pinion rotation, ratchet waits for an opportunity to stick into clearance between gear teeth, realizes parking.Unblock: rely on motor to rotate backward
Certain angle, makes cam return to initial position, and ratchet exits clearance between gear teeth under return spring effect, realizes unblock；
Epb is the abbreviation of electric parking brake, Chinese entitled electronic parking.Its operation principle of electronic parking and machine
Tool formula parking brake is identical, is all to be braked by cable pull rear wheel brake hoof.
Most commercial car parking systems all realize parking purpose by epb system or epp system at present.On level land
Or only just can realize parking and the effect of unblock with comparalive ease using epp system on the more slow car of the gradient, but work as the gradient
When more than certain value, because commercial car vehicle body is more a lot of than common passenger car weight, the external force that complete vehicle weight produces is passed through
Power train acts directly in epp frame for movement.In parking and braking, epp motor is needed to produce sufficiently large moment of torsion by force
So that lockable mechanism is engaged or disengage, therefore only cannot realizing unlocking purpose by epp parking system, although or achieving unblock
It is to cause larger abnormal sound.Although and simply use epb system abnormal sound can be much smaller, parking effect can be little compared with epp very
Many, when the gradient is larger, easy rollback.
Content of the invention
The technical problem to be solved is to provide a kind of electric automobile electronic parking control method to pass through order to open
Dynamic epb and epp system, improves the reliability of epp system, it is to avoid epp system clamping stagnation under full load condition or steep gradient state
The generation of phenomenon；Through real vehicle contrast, eliminate under full-load conditions, the abnormal sound of the parking of little ramp and unblock, can simultaneously
Smoothly carry out parking and unblock under steep gradient state, improve the reliability of vehicle performance.
The present invention is achieved in that a kind of electric automobile electronic parking control method, and this vehicle comprises epb and epp two
Set parking control system, described epb parking system and epp parking system are controlled by entire car controller, set delay time
After controlled as follows；
From driving states to parking lock state, when that is, vehicle is changed into p shelves, first with epb parking system, locking behaviour is carried out to vehicle
Make, wait delay time, parking signal is sent to epp parking system and carries out locking operation to vehicle by entire car controller again；
From parking lock state to driving states, that is, automobile gear level when p shelves are changed into other gears, after brake pedal is stepped on,
Entire car controller first controls epp parking system to unlock, and waits delay time, then epb parking system is unlocked.
Described delay time is 0.5～2 second.
Described epb parking system is the parking device compressing wheel or axis of wheel rotation using frictional force.
Described parking device is selected from brake block, brake shoe or mechanical clamp.
Electric automobile electronic parking control method of the present invention passes through sequence starting epb and epp system, improves epp system
Reliability, it is to avoid under the full load condition or steep gradient state generation of epp system catching phenomenon；Through real vehicle contrast, eliminate
Under full-load conditions, the abnormal sound of the parking of little ramp and unblock, smoothly can carry out parking under steep gradient state simultaneously
And unblock, improve the reliability of vehicle performance.
Brief description
Fig. 1 is the control system block diagram of electric automobile electronic parking control method of the present invention；
Fig. 2 carries out the logic diagram of parking lock control for the present invention；
Fig. 3 carries out the logic diagram of parking solution lock control for the present invention；
Fig. 4 is contrast experiment's routine parking control mode.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content of present invention statement, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiment 1
Epb parking system used by the present invention is the parking device compressing wheel or axis of wheel rotation using frictional force, for example, stop
Car piece, brake shoe, mechanical clamp etc..
As shown in figure 1, a kind of electric automobile electronic parking control method, this vehicle comprises two sets of parkings of epb and epp and controls
System, described epb parking system and epp parking system are controlled by entire car controller, carry out as follows after setting delay time
Control, in the present invention, preferably, described delay time is 0.5～2 second；
In the present embodiment, described delay time is set as 0.5 second, specifically point the following two kinds situation:
As shown in Fig. 2 from driving states to parking lock state, when that is, vehicle is changed into p shelves, first using epb parking system to vehicle
Carry out locking operation, time delay 0.5 second, parking signal is sent to epp parking system by entire car controller vcu again to be carried out to vehicle
Locking operates, and realizes the locking operation to vehicle, completes parked state；
As shown in figure 3, when parking lock state is to driving states, that is, automobile gear level, when p shelves are changed into other gears, is being braked
After pedal is stepped on, epp parking system is first unlocked by entire car controller vcu, time delay 0.5 second, then epb parking system is unlocked.
Carry out parking experiment using after this control method, under conditions of being fully loaded with, level land and 20% ramp on respectively parking
And unblock.
On level land, if being now linked into p shelves, epb first passes through motor and drives cable pull rear wheel brake hoof lock
After death take turns, and by parked state information transmission to entire car controller.Entire car controller is sent out to epp system after receiving this information and is stayed
Car order, completes parking by epp system.If departing from p shelves after parking, entire car controller directly sends unblock life to epp system
Order.After the completion of epp unblock, epb system starts to execute and completes unlocking function.
On 20% ramp, if being now linked into p shelves, epb first passes through motor and drives cable pull rear wheel brake
The locked trailing wheel of hoof, and by parked state information transmission to entire car controller.Entire car controller receives after this information to epp system
Send out parking order, parking is completed by epp system.If departing from p shelves after parking, entire car controller directly sends solution to epp system
Lock order.After the completion of epp unblock, epb system starts to execute and completes unlocking function.
The conventional parking mode of contrast experiment is: as shown in figure 4, p shelves are the park position of vehicle, entire car controller vcu root
Epp parking system is directly controlled to carry out locking and unblock according to automobile gear level signal, i.e. the entire car controller control when vehicle is in p shelves
Epp parking system processed carries out locking operation to vehicle, the vehicle control unit controls epp parking system solution when vehicle is not at p shelves
Lock, now epb system is not involved in parking control.
Through real vehicle contrast.Conventional parking mode, under full-load conditions, when grade signal is 7% about, parking and
Unblock is all achievable.When ramp signal is 12% about, parking is it is achieved that but unblock can fail.And made using the present invention
After method, ramp signal below 25%, all can smoothly realize by parking and unblock.
Claims (4)
1. a kind of electric automobile electronic parking control method, this vehicle comprises two sets of parking control systems of epb and epp, described epb
Parking system and epp parking system are controlled by entire car controller, it is characterized in that: controlled as follows after setting delay time
System；
From driving states to parking lock state, when that is, vehicle is changed into p shelves, first with epb parking system, locking behaviour is carried out to vehicle
Make, wait delay time, parking signal is sent to epp parking system and carries out locking operation to vehicle by entire car controller again；
From parking lock state to driving states, that is, automobile gear level when p shelves are changed into other gears, after brake pedal is stepped on,
Entire car controller first controls epp parking system to unlock, and waits delay time, then epb parking system is unlocked.
2. electric automobile electronic parking control method as claimed in claim 1, is characterized in that: described delay time is 0.5～2
Second.
3. electric automobile electronic parking control method as claimed in claim 1 or 2, is characterized in that: described epb parking system is
Compress the parking device of wheel or axis of wheel rotation using frictional force.
4. electric automobile electronic parking control method as claimed in claim 3, is characterized in that: described parking device is selected from brake
Piece, brake shoe or mechanical clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861576.6A CN106335487A (en) | 2016-09-29 | 2016-09-29 | Electric parking brake (EPB) control method for electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861576.6A CN106335487A (en) | 2016-09-29 | 2016-09-29 | Electric parking brake (EPB) control method for electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106335487A true CN106335487A (en) | 2017-01-18 |
Family
ID=57840399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610861576.6A Pending CN106335487A (en) | 2016-09-29 | 2016-09-29 | Electric parking brake (EPB) control method for electric car |
Country Status (1)
| Country | Link |
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| CN (1) | CN106335487A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926828A (en) * | 2017-03-08 | 2017-07-07 | 湖北汽车工业学院 | A kind of executing agency driven for parking electric automobile electric mortise lock |
| CN107264489A (en) * | 2017-05-17 | 2017-10-20 | 广汽本田汽车有限公司 | Emergency release method and device for electronic brake system |
| CN108058698A (en) * | 2017-12-13 | 2018-05-22 | 宁波贝尔达汽车控制系统有限公司 | EPB electronic parkings system and its control method |
| CN108466608A (en) * | 2018-02-01 | 2018-08-31 | 阿尔特汽车技术股份有限公司 | A kind of parking electric automobile control method based on electronic parking |
| CN109435941A (en) * | 2018-10-10 | 2019-03-08 | 北京新能源汽车股份有限公司 | The method and system and vehicle and storage medium of control vehicle automatic parking |
| CN109466341A (en) * | 2018-11-22 | 2019-03-15 | 北京长城华冠汽车科技股份有限公司 | The control method of electric car, the control system of electric car and vehicle |
| CN111071061A (en) * | 2019-12-26 | 2020-04-28 | 上海擎度汽车科技有限公司 | Starting and releasing method of electronic parking system of new energy unmanned automobile |
| 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 |
| CN110126794B (en) * | 2018-02-08 | 2020-06-09 | 上海汽车变速器有限公司 | New energy pure electric integrated driving device and parking control strategy thereof |
| CN113147427A (en) * | 2021-05-28 | 2021-07-23 | 云度新能源汽车有限公司 | Control method for preventing electric automobile from sliding down slope, vehicle control unit and electric automobile |
| CN113348114A (en) * | 2019-01-22 | 2021-09-03 | 宝马汽车股份有限公司 | Motor vehicle with electronically actuable parking lock and electronically actuable parking brake |
| CN114013408A (en) * | 2021-09-28 | 2022-02-08 | 上海汽车制动系统有限公司 | Parking clamping force attenuation compensation method of electronic drum brake system |
| CN114074662A (en) * | 2020-08-13 | 2022-02-22 | 长城汽车股份有限公司 | Method and device for controlling driver off-position of vehicle |
| CN114013408B (en) * | 2021-09-28 | 2024-05-07 | 上海汽车制动系统有限公司 | Parking clamping force attenuation compensation method of electronic drum brake system |
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| CN2856600Y (en) * | 2005-11-23 | 2007-01-10 | 比亚迪股份有限公司 | Autocar locking means |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926828A (en) * | 2017-03-08 | 2017-07-07 | 湖北汽车工业学院 | A kind of executing agency driven for parking electric automobile electric mortise lock |
| CN107264489A (en) * | 2017-05-17 | 2017-10-20 | 广汽本田汽车有限公司 | Emergency release method and device for electronic brake system |
| CN107264489B (en) * | 2017-05-17 | 2019-08-23 | 广汽本田汽车有限公司 | Emergency release method and device for electronic brake system |
| CN108058698A (en) * | 2017-12-13 | 2018-05-22 | 宁波贝尔达汽车控制系统有限公司 | EPB electronic parkings system and its control method |
| CN108466608A (en) * | 2018-02-01 | 2018-08-31 | 阿尔特汽车技术股份有限公司 | A kind of parking electric automobile control method based on electronic parking |
| CN110126794B (en) * | 2018-02-08 | 2020-06-09 | 上海汽车变速器有限公司 | New energy pure electric integrated driving device and parking control strategy thereof |
| CN109435941A (en) * | 2018-10-10 | 2019-03-08 | 北京新能源汽车股份有限公司 | The method and system and vehicle and storage medium of control vehicle automatic parking |
| 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 |
| CN109466341A (en) * | 2018-11-22 | 2019-03-15 | 北京长城华冠汽车科技股份有限公司 | The control method of electric car, the control system of electric car and vehicle |
| CN113348114A (en) * | 2019-01-22 | 2021-09-03 | 宝马汽车股份有限公司 | Motor vehicle with electronically actuable parking lock and electronically actuable parking brake |
| CN113348114B (en) * | 2019-01-22 | 2023-09-15 | 宝马汽车股份有限公司 | Motor vehicle with electronically controllable parking lock and electronically controllable parking brake |
| CN111071061A (en) * | 2019-12-26 | 2020-04-28 | 上海擎度汽车科技有限公司 | Starting and releasing method of electronic parking system of new energy unmanned automobile |
| CN114074662A (en) * | 2020-08-13 | 2022-02-22 | 长城汽车股份有限公司 | Method and device for controlling driver off-position of vehicle |
| CN113147427A (en) * | 2021-05-28 | 2021-07-23 | 云度新能源汽车有限公司 | Control method for preventing electric automobile from sliding down slope, vehicle control unit and electric automobile |
| CN114013408A (en) * | 2021-09-28 | 2022-02-08 | 上海汽车制动系统有限公司 | Parking clamping force attenuation compensation method of electronic drum brake system |
| CN114013408B (en) * | 2021-09-28 | 2024-05-07 | 上海汽车制动系统有限公司 | Parking clamping force attenuation compensation method of electronic drum brake system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170118 |
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| RJ01 | Rejection of invention patent application after publication |