CN109808501A - A kind of method and its system of braking energy of electric automobiles recycling - Google Patents
A kind of method and its system of braking energy of electric automobiles recycling Download PDFInfo
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- CN109808501A CN109808501A CN201711172416.1A CN201711172416A CN109808501A CN 109808501 A CN109808501 A CN 109808501A CN 201711172416 A CN201711172416 A CN 201711172416A CN 109808501 A CN109808501 A CN 109808501A
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- driving wheel
- braking
- speed
- power drive
- braking energy
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Abstract
The present invention relates to field of automobile control, and in particular to a kind of method and its system of braking energy of electric automobiles recycling.The present invention exports braking moment by control power drive system and carries out energy regenerating, and make the rotational speed difference of driving wheel and non-driving wheel no more than setting value, thus make the motor of electric car in anti-blocking brake system work (have wheel occur will locking when) continue to battery input current.The present invention can increase continual mileage, while reducing the mutation of braking moment, also have certain contribution to the ride comfort of vehicle in the recycling for guaranteeing to realize braking energy in the case where wheel not locking to greatest extent.
Description
Technical field
The present invention relates to field of automobile control, and in particular to a kind of method of braking energy of electric automobiles recycling and its is
System.
Background technique
Electric car can be charged the battery by the recycling to braking energy to improve continual mileage.It is current electronic
Automobile mostly uses the mode that electric power generation is braked and tradition machinery braking is superimposed to Brake energy recovery, will increase driving wheel in this way
Brake force, and biggish brake force be easy to cause wheel lock up and vehicle is made to lose the ability laterally manipulated, braking anti-lock
The size of the adjustable mechanical braking force of system, but electric power generation brake force can not be adjusted, there is electric power generation brake force
In the case of the vehicle that can not fully meet the requirement of anti-wheel lock up, therefore be equipped with anti-blocking brake system can all require making
Cancel electric power generation braking when dynamic anti-lock work, can thus reduce the energy of feedback braking, reduce the driving of electric car
Mileage.
Summary of the invention
The object of the present invention is to provide the methods and its system of a kind of recycling of braking energy of electric automobiles, are making to solve
Motor, which stops dynamic brake, when dynamic anti-lock braking system work leads to the problem of not can be carried out Brake energy recovery.
To achieve the above object, the solution of the present invention includes a kind of method of braking energy of electric automobiles recycling, works as detection
To when anti-blocking brake system activation, demand braking moment, power drive system are calculated according to the revolving speed of driving wheel and non-driving wheel
Dynamic brake is carried out according to the demand braking moment so that the rotational speed difference of the driving wheel and non-driving wheel is not more than setting value.
Further, the setting value is 10rpm.
Further, when detecting that anti-blocking brake system does not activate and detects brake pedal signal, according to institute
It states brake pedal signal and speed calculates braking moment, power drive system is controlled according to the braking moment.
Further, the braking anti-lock is judged according to the speed, driving wheel speed and the non-driving wheel revolving speed that detect
Whether system activates.
Correspondingly, the present invention also provides a kind of braking energy recovery system for electric vehicle, including controller, the control
Device connects brake pedal sensor, power drive system and anti-blocking brake system；
The anti-blocking brake system is for detecting speed, driving wheel speed and non-driving wheel revolving speed；
The brake pedal sensor is for detecting brake pedal aperture；
The power drive system is used for output torque；
The controller is stored with the instruction for realizing following method: when detecting anti-blocking brake system activation, according to
The revolving speed of driving wheel and non-driving wheel calculates demand braking moment, and power drive system generates electricity according to the demand braking moment
It brakes so that the rotational speed difference of the driving wheel and non-driving wheel is not more than setting value.
Further, the setting value is 10rpm.
Further, the controller is also stored with the instruction for realizing following method: when detecting anti-blocking brake system
When not activating and detecting brake pedal signal, braking moment is calculated according to the brake pedal signal and speed, according to institute
State braking moment control power drive system.
Further, the anti-blocking brake system is according to speed, driving wheel speed and the non-driving wheel revolving speed detected
Judge whether to activate and sends controller for state of activation.
The beneficial effects of the present invention are: exporting braking moment by control power drive system, make driving wheel and non-driving wheel
Rotational speed difference be not more than setting value, thus make the motor of electric car anti-blocking brake system work when (there is wheel to occur
Will locking when) continue to realize braking energy to greatest extent in the case where guaranteeing wheel not locking to battery input current
Recycling, increase continual mileage, while reducing the mutation of braking moment, also have certain contribution to the ride comfort of vehicle.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the invention；
Fig. 2 is the structure chart of system embodiment of the present invention.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawing.
The present invention provides one to solve the problems, such as to recycle braking energy when anti-lock braking system is run
The method and its system of kind braking energy of electric automobiles recycling, the braking requirement torque tune that power drive system is sent according to controller
Whole braking moment makes the revolving speed of the revolving speed for driving wheel and non-driven wheel that the shape that driving wheel is in non-locking be done step-by-step
State, while charging again to battery pack, improve the continual mileage of vehicle.
Fig. 1 is the flow chart of the method for the invention, comprising:
Automobile enters on-position；
Judge whether anti-blocking brake system activates, if do not activated, is calculated according to brake pedal aperture and speed
Braking moment；If anti-blocking brake system has activated, braking is calculated according to the rotational speed difference of driving wheel and non-driving wheel and is turned
Square；
Power drive system exports braking moment.
Fig. 2 is the structure chart of system embodiment of the present invention, including entire car controller, and entire car controller connection braking is stepped on
Plate jaw opening sensor, power drive system and anti-blocking brake system.Entire car controller includes: by the information that CAN bus obtains
The working condition of anti-blocking brake system drives the motor of vehicle wheel rotational speed, non-driven vehicle wheel rotational speed, speed, power drive system to turn
The information such as fast, current output torque；Entire car controller obtains brake pedal opening information by rigid line.
Brake pedal jaw opening sensor is responsible for acquiring brake pedal aperture, whole before anti-lock braking system is in running order
The brake pedal aperture and speed that vehicle controller is acquired according to brake pedal jaw opening sensor calculate braking moment.
When anti-blocking brake system activation, entire car controller is responsible for the working condition according to current anti-lock braking system, is driven
The rotational speed difference of motor car wheel and non-driven wheel calculates required electric braking torque, and the electric braking torque of demand is total by CAN
Line is sent to power drive system.
Anti-blocking brake system is responsible for calculating current vehicle speed and acquires the revolving speed of driving wheel and non-driving wheel, total by CAN
Line transmits these information to entire car controller, and is judged whether to start anti-lock braking system according to speed and vehicle wheel rotational speed, works as system
State of activation is sent when dynamic anti-lock function activation to entire car controller.
It is battery that the demand braking moment output braking moment that power drive system is calculated according to entire car controller generates electricity simultaneously
Group charging.
Brake pedal is stepped on when driver needs and slows down, signal is passed to full-vehicle control by brake pedal jaw opening sensor
Device, entire car controller calculate braking moment according to brake pedal aperture and current speed and send brake force to power drive system
Square is for generating electricity.
If driving wheel will locking, anti-blocking brake system can enter working condition at this time, by CAN bus to vehicle
Controller sends braking anti-lock activation.
Entire car controller will recalculate demand braking moment according to the revolving speed of driving wheel and the revolving speed of non-driving wheel,
Demand braking moment is sent to power drive system by CAN bus.Direct torque target is driving wheel speed and non-driving wheel
The speed difference of revolving speed is within 10rpm.
Power drive system sends braking requirement torque according to entire car controller and is adjusted braking moment, makes to drive wheel
The state that driving wheel is in non-locking is done step-by-step in the revolving speed of revolving speed and non-driven wheel, while charging again to battery pack, mentions
The continual mileage of high vehicle.
Specific embodiment of the present invention is presented above, braking moment is exported by control power drive system, is made
The rotational speed difference of driving wheel and non-driving wheel is not more than setting value, so that the motor of electric car be made to work in anti-blocking brake system
Shi Jixu is to battery input current.
But the present invention is not limited to described embodiment, judges anti-blocking brake system for example, by using other modes
Whether activate, either acquire the concrete mode of speed or revolving speed, the technical solution formed in this way is carried out to above-described embodiment
What fine tuning was formed, this technical solution is still fallen in protection scope of the present invention.
Claims (8)
1. a kind of method of braking energy of electric automobiles recycling, it is characterised in that: when detecting anti-blocking brake system activation,
Demand braking moment is calculated according to the revolving speed of driving wheel and non-driving wheel, power drive system is carried out according to the demand braking moment
Dynamic brake is so that the rotational speed difference of the driving wheel and non-driving wheel is not more than setting value.
2. the method for a kind of braking energy of electric automobiles recycling according to claim 1, it is characterised in that: the setting value is
10rpm。
3. a kind of method of braking energy of electric automobiles recycling according to claim 1 or claim 2, it is characterised in that: when detecting
When anti-blocking brake system does not activate and detects brake pedal signal, system is calculated according to the brake pedal signal and speed
Dynamic torque controls power drive system according to the braking moment.
4. a kind of method of braking energy of electric automobiles recycling according to claim 3, it is characterised in that: according to what is detected
Speed, driving wheel speed and non-driving wheel revolving speed judge whether the anti-blocking brake system activates.
5. a kind of braking energy recovery system for electric vehicle, it is characterised in that: including controller, the controller connection braking is stepped on
Plate sensor, power drive system and anti-blocking brake system；
The anti-blocking brake system is for detecting speed, driving wheel speed and non-driving wheel revolving speed；
The brake pedal sensor is for detecting brake pedal aperture；
The power drive system is used for output torque；
The controller is stored with the instruction for realizing following method: when detecting anti-blocking brake system activation, according to driving
The revolving speed of wheel and non-driving wheel calculates demand braking moment, and power drive system carries out dynamic brake according to the demand braking moment
So that the rotational speed difference of the driving wheel and non-driving wheel is not more than setting value.
6. a kind of braking energy recovery system for electric vehicle according to claim 5, it is characterised in that: the setting value is
10rpm。
7. according to a kind of braking energy recovery system for electric vehicle of claim 5 or 6, it is characterised in that: the controller
Also it is stored with the instruction for realizing following method: when detecting that anti-blocking brake system do not activate and detect brake pedal signal
When, braking moment is calculated according to the brake pedal signal and speed, power drive system is controlled according to the braking moment.
8. a kind of braking energy recovery system for electric vehicle according to claim 7, it is characterised in that: the braking anti-lock
System judges whether to activate and sends control for state of activation according to the speed, driving wheel speed and the non-driving wheel revolving speed that detect
Device processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172416.1A CN109808501B (en) | 2017-11-22 | 2017-11-22 | Method and system for recovering braking energy of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172416.1A CN109808501B (en) | 2017-11-22 | 2017-11-22 | Method and system for recovering braking energy of electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109808501A true CN109808501A (en) | 2019-05-28 |
| CN109808501B CN109808501B (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711172416.1A Active CN109808501B (en) | 2017-11-22 | 2017-11-22 | Method and system for recovering braking energy of electric automobile |
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Citations (6)
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| KR20080037342A (en) * | 2006-10-26 | 2008-04-30 | 현대자동차주식회사 | Method for control regenerative braking of electric vehicle |
| JP2013018332A (en) * | 2011-07-11 | 2013-01-31 | Suzuki Motor Corp | Regenerative brake control device for vehicle |
| JP2014079099A (en) * | 2012-10-11 | 2014-05-01 | Ntn Corp | Antilock brake control system for vehicle mounted with motors |
| CN105189220A (en) * | 2013-03-28 | 2015-12-23 | 本田技研工业株式会社 | Vehicular brake system |
| CN106585389A (en) * | 2015-10-20 | 2017-04-26 | 北汽福田汽车股份有限公司 | Electric vehicle, electric vehicle regenerative braking control method and device |
| CN106627171A (en) * | 2017-01-12 | 2017-05-10 | 重庆长安汽车股份有限公司 | Torque recycling control method and control system of pure electric vehicle |
-
2017
- 2017-11-22 CN CN201711172416.1A patent/CN109808501B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080037342A (en) * | 2006-10-26 | 2008-04-30 | 현대자동차주식회사 | Method for control regenerative braking of electric vehicle |
| JP2013018332A (en) * | 2011-07-11 | 2013-01-31 | Suzuki Motor Corp | Regenerative brake control device for vehicle |
| JP2014079099A (en) * | 2012-10-11 | 2014-05-01 | Ntn Corp | Antilock brake control system for vehicle mounted with motors |
| CN105189220A (en) * | 2013-03-28 | 2015-12-23 | 本田技研工业株式会社 | Vehicular brake system |
| CN106585389A (en) * | 2015-10-20 | 2017-04-26 | 北汽福田汽车股份有限公司 | Electric vehicle, electric vehicle regenerative braking control method and device |
| CN106627171A (en) * | 2017-01-12 | 2017-05-10 | 重庆长安汽车股份有限公司 | Torque recycling control method and control system of pure electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109808501B (en) | 2022-08-02 |
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