CN104627001A - Braking energy recovery adjustment control method - Google Patents
Braking energy recovery adjustment control method Download PDFInfo
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- CN104627001A CN104627001A CN201410743051.3A CN201410743051A CN104627001A CN 104627001 A CN104627001 A CN 104627001A CN 201410743051 A CN201410743051 A CN 201410743051A CN 104627001 A CN104627001 A CN 104627001A
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Abstract
The invention provides a braking energy recovery adjustment control method. A whole vehicle controller collects a slope signal of a current road through a slope sensor, when the slope shows downhill and the duration time for which the slope is larger than the first set value is larger than the second set value, it is judged that a vehicle is in the long-distance downhill work condition, braking energy recovery adjustment control is started, and the whole vehicle controller decides whether an instruction for increasing the braking torque is sent to a motor controller or not through the comparison between the current vehicle speed and the target vehicle speed. The recycling rate is obviously increased especially under the rough mountain long-distance downhill driving working condition, and energy losses produced by vehicle potential energy descending are effectively recycled.
Description
Technical field
The present invention relates to the energy regenerating field of pure electric automobile, be specifically related to a kind of Brake energy recovery adjustment control method.
Background technology
Brake energy recovery is one of modern new-energy automobile important technology, is also their important feature.
On traditional internal-combustion engines vehicle, when car retardation, braking, the kinergety of vehicle changes heat energy into by brake system and discharges in air.And have the energy-conservation of power drive system with on new-energy automobile comprising electronlmobil and hybrid electric vehicle etc., the braking energy that this quilt " waste " falls is that electrical power storage is in storage battery by Brake energy recovery technical change, driving-energy can be further converted to, as when vehicle needs the propulsive effort increased (as starting or acceleration), motor propulsive effort becomes the auxiliary power of driving engine, makes the electric energy of recovery obtain actv. application.
Data show, be in the common braking occasion of non-emergent braking at vehicle, the braking energy of about 1/5 can reclaim.And this ratio is according to pure mode of operation that is electronic or hybrid electric vehicle is different and control policy is different and different.Current Brake energy recovery strategy can not regulate for different operating modes, especially when class this long distance descent run operating mode as descending in winding road, still the take-back strategy of city level road operating mode is used, seem practical not, and chaufeur needs frequent operation acceleration pedal and brake pedal, also need absorbed direction of operating dish to control direction of traffic, effectively can not utilize the degradation of energy that potential energy of vehicles decline produces, the percent recovery is urgently optimized simultaneously.In addition, work long hours if brake system is crossed, be easy to the situation that braking failure occurs, Peril Incident may be caused to occur, affect the safety of vehicle.
Summary of the invention
In view of this, the invention provides a kind of Brake energy recovery adjustment control method, be intended to the automatic adjustment realizing braking energy feedback.
The technical solution used in the present invention is specially:
A kind of Brake energy recovery adjustment control method, entire car controller gathers the grade signal of present road by Slope Transducer, when the gradient is in descending and the time length that the gradient is greater than setting value one exceedes setting value two, then judge that vehicle enters long distance descending operating mode, start Brake energy recovery regulable control, control policy is specially:
S1: the aperture of entire car controller Real-time Obtaining acceleration pedal and brake pedal, when monitoring acceleration pedal and brake pedal is idle travel, record chaufeur finally unclamps the speed of a motor vehicle in pedal moment, using this speed of a motor vehicle as the target control speed of a motor vehicle;
S2: the current vehicle speed that entire car controller Real-time Collection anti-blocking brake system sends, and compare current vehicle speed and target vehicle speed, if current vehicle speed be greater than target vehicle speed and the difference of the two is greater than setting value three time, entire car controller increases brake torque to electric machine controller, PID control is carried out to it, the brake torque of increase
In formula: P, I, D are respectively ratio, integration, differential regulating parameter, are drawn by real vehicle parameter calibration; Then S1 is returned;
S3: if entire car controller monitors chaufeur carried out the action of bend the throttle or brake pedal, then vehicle reclaims braking energy according to even twisting moment; Otherwise proceed to S2, until the difference of current vehicle speed and target vehicle speed is within setting value three.
In above-mentioned Brake energy recovery adjustment control method, described setting value one is 2-4%
In above-mentioned Brake energy recovery adjustment control method, described setting value two is 5-15s.
In above-mentioned Brake energy recovery adjustment control method, described setting value three is 0.5-2km/h.
In above-mentioned Brake energy recovery adjustment control method, described even twisting moment is 30-50Nm.
The beneficial effect that the present invention produces is:
Vehicle is in for a long time to utilize Slope Transducer to detect, during the winding road descending of steep gradient, by introducing the Brake energy recovery control method of Intelligent adjustment, Intelligent adjustment is carried out according to different operating modes, entire car controller carries out the torque rating of energy regenerating by control logic self-regulation motor, make the speed of a motor vehicle be stabilized in a certain speed of a motor vehicle (to be as the criterion with the speed of a motor vehicle during release the gas pedal when not stepping on braking, be as the criterion with the speed of a motor vehicle during loosen the brake when stepping on braking), under the prerequisite guaranteeing driving safety, improve economy and the safety of car load, make vehicle operating more safe and reliable, alleviate driving fatigue.Energy regenerating is made to be provided with good comformability.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, more completely the present invention can be understood better.Accompanying drawing described herein is used to provide a further understanding of the present invention, and embodiment and explanation thereof, for explaining the present invention, do not form inappropriate limitation of the present invention.
Fig. 1 is the diagram of circuit of a kind of Brake energy recovery adjustment control method of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
A kind of Brake energy recovery adjustment control method as shown in Figure 1, entire car controller VCU gathers the grade signal of present road by Slope Transducer, when the gradient is in descending and the time length that the gradient is greater than setting value one exceedes setting value two, in the present embodiment, get when the gradient be in descending and the time length of > 3% more than 10s time, then judge that vehicle enters long distance descending operating mode, start Brake energy recovery regulable control, control policy is specially:
The aperture of entire car controller Real-time Obtaining acceleration pedal and brake pedal, when monitoring acceleration pedal and brake pedal is idle travel, record chaufeur finally unclamps the speed of a motor vehicle in pedal moment, using this speed of a motor vehicle as the target control speed of a motor vehicle;
The current vehicle speed that entire car controller Real-time Collection anti-blocking brake system ABS sends, and compare current vehicle speed and target vehicle speed, if current vehicle speed be greater than target vehicle speed and the difference of the two is greater than setting value three time, entire car controller increases brake torque to electric machine controller MCU, in the present embodiment, when current vehicle speed is often greater than target vehicle speed 2km/h, entire car controller just sends the control command increasing brake torque to electric machine controller, PID control is carried out to it, the brake torque of increase
In formula: P, I, D are respectively ratio, integration, differential regulating parameter, are drawn by real vehicle parameter calibration;
Circulation like this, until entire car controller monitors chaufeur carried out the action of bend the throttle or brake pedal, vehicle braking energy reclaims to transfer to and reclaims control policy according to even twisting moment (30-50Nm) to the ordinary municipal operating mode that braking energy reclaims.
As mentioned above, embodiments of the invention are explained, obviously, as long as do not depart from fact inventive point of the present invention and effect, will be readily apparent to persons skilled in the art distortion, is also all included within protection scope of the present invention.
Claims (5)
1. a Brake energy recovery adjustment control method, it is characterized in that, entire car controller gathers the grade signal of present road by Slope Transducer, when the gradient is in descending and the time length that the gradient is greater than setting value one exceedes setting value two, then judge that vehicle enters long distance descending operating mode, start Brake energy recovery regulable control, control policy is specially:
S1: the aperture of entire car controller Real-time Obtaining acceleration pedal and brake pedal, when monitoring acceleration pedal and brake pedal is idle travel, record chaufeur finally unclamps the speed of a motor vehicle in pedal moment, using this speed of a motor vehicle as the target control speed of a motor vehicle;
S2: the current vehicle speed that entire car controller Real-time Collection anti-blocking brake system sends, and compare current vehicle speed and target vehicle speed, if current vehicle speed be greater than target vehicle speed and the difference of the two is greater than setting value three time, entire car controller increases brake torque to electric machine controller, PID control is carried out to it, the brake torque of increase
In formula: P, I, D are respectively ratio, integration, differential regulating parameter, are drawn by real vehicle parameter calibration; Then S1 is returned;
S3: if entire car controller monitors chaufeur carried out the action of bend the throttle or brake pedal, then vehicle reclaims braking energy according to even twisting moment; Otherwise proceed to S2, until the difference of current vehicle speed and target vehicle speed is within setting value three.
2. Brake energy recovery adjustment control method according to claim 1, is characterized in that, described setting value one is 2-4%.
3. Brake energy recovery adjustment control method according to claim 1, is characterized in that, described setting value two is 5-15s.
4. Brake energy recovery adjustment control method according to claim 1, is characterized in that, described setting value three is 0.5-2km/h.
5. Brake energy recovery adjustment control method according to claim 1, is characterized in that, described even twisting moment is 30-50Nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410743051.3A CN104627001B (en) | 2014-12-08 | 2014-12-08 | A kind of Brake energy recovery adjustment control method |
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| CN201410743051.3A CN104627001B (en) | 2014-12-08 | 2014-12-08 | A kind of Brake energy recovery adjustment control method |
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| CN104627001A true CN104627001A (en) | 2015-05-20 |
| CN104627001B CN104627001B (en) | 2017-09-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539390A (en) * | 2016-02-29 | 2016-05-04 | 河南师范大学 | Vehicle downhill energy collection and utilization device |
| CN106427598A (en) * | 2016-10-31 | 2017-02-22 | 成都雅骏新能源汽车科技股份有限公司 | Semi-automatic long-slope brake control system for new-energy electric vehicle and method for implementing semi-automatic long-slope brake control system |
| CN106427600A (en) * | 2015-08-07 | 2017-02-22 | 舍弗勒技术股份两合公司 | Downhill auxiliary driving device for electrically-driven automobile, and control method |
| CN108422896A (en) * | 2018-02-01 | 2018-08-21 | 阿尔特汽车技术股份有限公司 | A kind of electric vehicle deceleration increasing boat control system and method based under specific operation |
| CN109572678A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Control method and control system when hybrid vehicle and its low battery descending |
| CN109606365A (en) * | 2018-12-29 | 2019-04-12 | 百度在线网络技术（北京）有限公司 | Method for controlling a vehicle and device |
| CN113291307A (en) * | 2021-05-26 | 2021-08-24 | 东风柳州汽车有限公司 | Automobile power control method, device, equipment and storage medium |
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| JP3557751B2 (en) * | 1995-09-27 | 2004-08-25 | 株式会社豊田自動織機 | Regenerative braking control device for electric vehicles |
| CN101016032A (en) * | 2005-10-31 | 2007-08-15 | 通用汽车公司 | Vehicle speed control system |
| CN101209683A (en) * | 2006-12-26 | 2008-07-02 | 比亚迪股份有限公司 | Electric automobile driving electric motor control method and control system thereof |
| CN101332774A (en) * | 2008-08-06 | 2008-12-31 | 山东理工大学 | Automobile brake energy regeneration control device and system |
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| JP3557751B2 (en) * | 1995-09-27 | 2004-08-25 | 株式会社豊田自動織機 | Regenerative braking control device for electric vehicles |
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| CN101209683A (en) * | 2006-12-26 | 2008-07-02 | 比亚迪股份有限公司 | Electric automobile driving electric motor control method and control system thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427600A (en) * | 2015-08-07 | 2017-02-22 | 舍弗勒技术股份两合公司 | Downhill auxiliary driving device for electrically-driven automobile, and control method |
| CN105539390A (en) * | 2016-02-29 | 2016-05-04 | 河南师范大学 | Vehicle downhill energy collection and utilization device |
| CN106427598A (en) * | 2016-10-31 | 2017-02-22 | 成都雅骏新能源汽车科技股份有限公司 | Semi-automatic long-slope brake control system for new-energy electric vehicle and method for implementing semi-automatic long-slope brake control system |
| CN109572678A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Control method and control system when hybrid vehicle and its low battery descending |
| CN108422896A (en) * | 2018-02-01 | 2018-08-21 | 阿尔特汽车技术股份有限公司 | A kind of electric vehicle deceleration increasing boat control system and method based under specific operation |
| CN109606365A (en) * | 2018-12-29 | 2019-04-12 | 百度在线网络技术（北京）有限公司 | Method for controlling a vehicle and device |
| CN113291307A (en) * | 2021-05-26 | 2021-08-24 | 东风柳州汽车有限公司 | Automobile power control method, device, equipment and storage medium |
| CN113291307B (en) * | 2021-05-26 | 2022-07-01 | 东风柳州汽车有限公司 | Automobile power control method, device, equipment and storage medium |
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| CN104627001B (en) | 2017-09-29 |
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