CN110154775A - The regenerating braking energy recycling and control method of electric car - Google Patents
The regenerating braking energy recycling and control method of electric car Download PDFInfo
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- CN110154775A CN110154775A CN201910375678.0A CN201910375678A CN110154775A CN 110154775 A CN110154775 A CN 110154775A CN 201910375678 A CN201910375678 A CN 201910375678A CN 110154775 A CN110154775 A CN 110154775A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
- B60L7/18—Controlling the braking effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of regenerating braking energy recycling and control methods of electric car.It the steps include: the braking section that the aperture section of accelerator pedal is divided into acceleration area, entire car controller sends to electric machine controller and orders according to the opening information of accelerator pedal;Entire car controller calculates the size of regenerative braking torque T, the T being calculated is sent to electric machine controller, T is a negative value;Its calculation formula is T2=F × R × T1, if T2 > Tmax, T=T2, otherwise T=Tmax.The present invention, which can solve braking process of the prior art, can only generate a kind of torque, can not continuously adjust;Input that parameter is more and the weighted of parameters, input parameter can not control every time it is identical, the problem of so as to cause stable braking torque can not be obtained.
Description
Technical field
The present invention relates to electric car manufacturing technology field, the regenerating braking energy of especially a kind of electric car recycles control
Method processed.
Background technique
In existing technical solution, the energy regenerating control mode of pure electric automobile is controlled again by ESP after accelerator releasing
The size and drop line of torsion of raw braking torque, the braking torque of this method are usually smaller thus recover energy less.
In existing published patent and scheme described in the immediate CN108284771A of the technical program, need
Will according to change rate when unclamping pedal, speed, pedal opening realizes the control of braking moment, if change rate when loose pedal
When greater than preset value, then by the aperture and loose pedal rate of change and speed before loose pedal, the mind for calculating braking torque is input to
Braking torque is calculated through network query function module, if change rate when loose pedal is less than preset threshold, passes through revolving speed-braking
The meter of torque calculates braking torque, the above braking torque export to electric machine controller need to be totally released throttle (pedal opening <
1.5%) it can realize, it can be seen that there are two disadvantages for above scheme:
One, the method that above-mentioned patent refers to substantially belongs to accelerator releasing regenerative braking, and the result of braking torque is output to motor
Controller needs to be totally released throttle, i.e. a braking process can only generate a kind of torque, can not continuously adjust;
Two, the calculating of braking torque uses neural network method, substantially belongs to that output and input be non-linear relation, defeated
Enter that parameter is more and the weighted of parameters, input parameter can not control every time it is identical, so as to cause stabilization can not be obtained
Braking torque.
ESP is the abbreviation of electronic stability control module.
Summary of the invention
The object of the present invention is to provide a kind of regenerating braking energy recycling and control methods of electric car, it can solve existing
There is braking process of technology that can only generate a kind of torque, can not continuously adjust;Input that parameter is more and the weight of parameters not
Together, input parameter can not control identical every time, the problem of so as to cause that can not obtain stable braking torque.
To solve the above-mentioned problems, the technical solution adopted by the present invention is that: the regenerating braking energy of this electric car return
Control method is received, is realized using brake of battery truck, which includes entire car controller, and the entire car controller receives
The opening information of accelerator pedal equipped with jaw opening sensor and the operation information of button operation panel, the entire car controller according to
The opening information and the operation information control driving motor by gearshift and electric machine controller and run, the vehicle control
Device processed goes the output of control power battery also according to the opening information and the operation information by battery management system, and leads to
Cross the stabilization that electronic stability control module removes control vehicle body;Implementation step is: 1) by the aperture section of the accelerator pedal point
For the braking section of acceleration area, the opening information of the entire car controller according to the accelerator pedal, Xiang Suoshu motor
Controller sends order, if the value of the opening information is not more than predetermined threshold value, and aperture change rate is greater than predetermined threshold value,
Then the entire car controller sends negative torque order to the electric machine controller, and automobile realizes braking function, if the aperture is believed
The value of breath is greater than predetermined threshold value, then the entire car controller sends positive-torque order to the electric machine controller, and automobile is realized
Advancement function;The opening information includes the aperture of the accelerator pedal and the change rate of the accelerator pedal, the change rate
Aperture for the accelerator pedal previous moment subtracts current time aperture;2) entire car controller is to regenerative braking torque T's
Size is calculated, and the T being calculated is sent to the electric machine controller, T is a negative value;The regenerative braking torque T
Calculation method are as follows: it is real according to the accelerator pedal when change rate>2% of accelerator releasing and the practical aperture B<30% of accelerator pedal
The product of logic aperture F that border aperture B is mapped and recycling intensity R and maximum allowable braking torque T1 are T2, by T2 and
The maximum braking torque Tmax that battery allows takes big value more afterwards, guarantees that the electric current of feedback is no more than permissible value, uses mathematics
Formulae express is T2=F × R × T1, if T2 > Tmax, T=T2, otherwise T=Tmax, calculated result are exported to electric machine controller;
The recycling intensity R is the percentage of the maximum braking torque under different speeds, which is demarcated according to real vehicle, as a result stored
In speed-recycling intensity dimensional table, since braking torque is directly exported according to after pedal opening calculated result,
Deboost phase driver can realize different braking effects according to change accelerator open degree is intended to.
In above-mentioned technical proposal, more specifically scheme may also is that the relationship of the opening information and torque are as follows: work as institute
It is regenerative braking capability that state aperture, which be 0~30%, when the aperture is from 30%~0 variation, regenerative braking torque from 0~it is maximum,
And be linear increase, when the aperture is 30%~100%, torque is accelerated to be gradually increased since 0;The aperture is 0~30%
Interior, the change rate is greater than 2%, i.e., the described accelerator pedal is in release conditions, and automobile is in on-position, when the aperture exists
When 30~100%, the accelerator pedal is in and steps on state, and automobile is in forward travel state.
It is further: the calculation method of the positive-torque are as follows: according to the practical aperture B of the accelerator pedal, set B >
30%, the logic aperture F mapped, the practical aperture of accelerator pedal are 0 in the logic aperture of 30%~100% mapping
~100%, by F as the input of the entire car controller, the entire car controller looks into the table of the accelerator pedal aperture and revolving speed
Actual logic aperture is calculated, and the actual logic aperture is multiplied to obtain with the Motor torque T3 that the table of motor external characteristics obtains
Output of the product as the positive-torque;Therefore when the practical aperture of the accelerator pedal > 30%, then it is in acceleration mode, if
Practical aperture < 30% of the accelerator pedal and accelerator pedal change rate < 2, then F is restricted to 0, does not export positive twist at this time
Square, vehicle are in sliding state.
By adopting the above-described technical solution, compared with prior art, the present invention having the beneficial effect that due to this hair
Bright that gas pedal aperture section is divided into acceleration area and braking section, braking torque and pedal opening exist in braking section
Specific mathematical relationship so changing the braking torque that aperture can be calculated according to aperture in braking process, and is counted
Obtained braking torque is directly output to electric machine controller, is not necessarily to precondition.To realize continuously adjustable, stablize
Braking torque.
Detailed description of the invention
Fig. 1 is the structure block diagram of brake of battery truck of the present invention.
Specific embodiment
Embodiment 1
The invention will be further described with reference to the accompanying drawings and examples:
The regenerating braking energy recycling and control method of electric car shown in FIG. 1, is realized using brake of battery truck, should
Device includes entire car controller 1, and entire car controller 1 receives the opening information and key for being equipped with the accelerator pedal 2 of jaw opening sensor
The operation information of operation panel 3, entire car controller 1 pass through gearshift 4 and motor control according to opening information and operation information
Device 5 controls driving motor operation, and entire car controller 1 goes to control also according to opening information and operation information by battery management system 7
The output of brake force battery 9, and pass through electronic stability control module 6(abbreviation ESP) go to control the stabilization of vehicle body;Implementation step
It is: 1) the aperture section of accelerator pedal 2 is divided into the braking section of acceleration area, entire car controller 1 is opened according to accelerator pedal
Information is spent, sends and orders to electric machine controller 5, if the value of opening information is not more than predetermined threshold value, and aperture change rate is greater than
Predetermined threshold value, then entire car controller 1 sends negative torque order to electric machine controller 5, and automobile realizes braking function, if aperture is believed
The value of breath is greater than predetermined threshold value, then entire car controller 1 sends positive-torque order to electric machine controller 5, and automobile realizes advance function
Energy;Opening information includes the aperture of accelerator pedal and the change rate of accelerator pedal, and change rate is opening for accelerator pedal previous moment
Degree subtracts current time aperture;2) the regenerative braking torque T being calculated is sent to electric machine controller 5 by entire car controller 1;Regeneration
The calculation method of braking torque T are as follows: when change rate>2% of accelerator pedal 2 and 2 practical aperture B<30% of accelerator pedal, according to adding
The product of logic aperture F and recycling intensity R and maximum allowable braking torque T1 that the practical aperture B of speed pedal 2 is mapped
For T2, the maximum braking torque Tmax that T2 and battery management system 7 allow is taken into big value more afterwards, guarantees the electric current of feedback
It no more than permissible value, is expressed as using mathematical formulae, T2=F × R × T1, if T2 > Tmax, T=T2, otherwise T=Tmax, is calculated
As a result it exports to electric machine controller;Recycling intensity R is the percentage of the maximum braking torque under different speeds, and the value is according to real vehicle
It is demarcated, is as a result stored in speed-recycling intensity dimensional table, since braking torque is according to pedal opening calculated result
It directly exports afterwards, therefore can realize different braking effects according to change accelerator open degree is intended in deboost phase driver.
The relationship of opening information and torque are as follows: it when aperture is 0 is regenerative braking capability, when regenerative braking torque is maximum,
When aperture is 30%, torque is accelerated to be greater than 0, when accelerator pedal 2 is discharged since 30% aperture, and change rate is greater than 2%, automobile
In on-position, when aperture is greater than 30%, automobile obtains positive-torque, and automobile, which is in, accelerates forward travel state.
The calculation method of positive-torque are as follows: according to the practical aperture B of accelerator pedal 2, set B > 30%, what is mapped is described
Logic aperture F, the practical aperture of accelerator pedal 2 is 0 in the logic aperture of 30% mapping, whole by F as the input of entire car controller 1
Vehicle controller 1 looks into accelerator pedal aperture and the meter of revolving speed calculates actual logic aperture, and will be special outside actual logic aperture and motor
Output of the product that the table of property is multiplied with Motor torque T3 as positive-torque.Therefore work as practical aperture > 30% of accelerator pedal 2
When, then it is in acceleration mode, if practical aperture < 30% of accelerator pedal 2 and 2 change rate < 2, F of accelerator pedal is restricted to 0,
Positive-torque is not exported at this time, and vehicle is in sliding state.
Embodiment 2
The invention will be further described with reference to the accompanying drawings and examples:
The regenerating braking energy recycling and control method of electric car shown in FIG. 1, is realized using brake of battery truck, should
Device includes entire car controller 1, and entire car controller 1 receives the opening information and key for being equipped with the accelerator pedal 2 of jaw opening sensor
The operation information of operation panel 3, entire car controller 1 pass through gearshift 4 and motor control according to opening information and operation information
Device 5 controls driving motor operation, and entire car controller 1 goes to control also according to opening information and operation information by battery management system 7
The output of brake force battery 9, and pass through electronic stability control module 6(abbreviation ESP) go to control the stabilization of vehicle body;Implementation step
It is: 1) the aperture section of accelerator pedal 2 is divided into the braking section of acceleration area, entire car controller 1 is opened according to accelerator pedal
Information is spent, sends and orders to electric machine controller 5, if the value of opening information is not more than predetermined threshold value, and aperture change rate is greater than
Predetermined threshold value, then entire car controller 1 sends negative torque order to electric machine controller 5, and automobile realizes braking function, if aperture is believed
The value of breath is greater than predetermined threshold value, then entire car controller 1 sends positive-torque order to electric machine controller 5, and automobile realizes advance function
Energy;Opening information includes the aperture of accelerator pedal and the change rate of accelerator pedal, and change rate is opening for accelerator pedal previous moment
Degree subtracts current time aperture;2) the regenerative braking torque T being calculated is sent to electric machine controller 5 by entire car controller 1;Regeneration
The calculation method of braking torque T are as follows: when change rate>2% of accelerator pedal 2 and 2 practical aperture B<30% of accelerator pedal, according to adding
The product of logic aperture F and recycling intensity R and maximum allowable braking torque T1 that the practical aperture B of speed pedal 2 is mapped
For T2, the maximum braking torque Tmax that T2 and battery management system 7 allow is taken into big value more afterwards, guarantees the electric current of feedback
It no more than permissible value, is expressed as using mathematical formulae, T2=F × R × T1, if T2 > Tmax, T=T2, otherwise T=Tmax, is calculated
As a result it exports to electric machine controller;Recycling intensity R is the percentage of the maximum braking torque under different speeds, and the value is according to real vehicle
It is demarcated, is as a result stored in speed-recycling intensity dimensional table, since braking torque is according to pedal opening calculated result
It directly exports afterwards, therefore can realize different braking effects according to change accelerator open degree is intended in deboost phase driver.
The relationship of opening information and torque are as follows: when aperture is 10% be regenerative braking capability, regenerative braking torque is centre
Value, when aperture changes to 0 from 10%, regenerative braking torque changes to 0 from median, and is linear increase, when aperture is 65%
When, acceleration torque is median, and when accelerator pedal discharge from 30% aperture, and change rate, greater than 2%, automobile is in on-position,
When aperture is in 30%~65%, automobile obtains positive-torque, in acceleration forward travel state.
The calculation method of positive-torque are as follows: according to the practical aperture B of accelerator pedal 2, set B > 30%, what is mapped is described
Logic aperture F, the practical aperture of accelerator pedal 2 is 50% in the logic aperture of 45% mapping, by F as the input of entire car controller 1,
Entire car controller 1 looks into accelerator pedal aperture and the meter of revolving speed calculates actual logic aperture, and will be outside actual logic aperture and motor
Output of the product that the table of characteristic is multiplied with Motor torque T3 as positive-torque.Therefore when the practical aperture of accelerator pedal 2 >
When 30%, then it is in acceleration mode, if practical aperture < 30% of accelerator pedal 2 and 2 change rate < 2, F of accelerator pedal is restricted to
0, positive-torque is not exported at this time, and vehicle is in sliding state.
Embodiment 3
The invention will be further described with reference to the accompanying drawings and examples:
The regenerating braking energy recycling and control method of electric car shown in FIG. 1, is realized using brake of battery truck, should
Device includes entire car controller 1, and entire car controller 1 receives the opening information and key for being equipped with the accelerator pedal 2 of jaw opening sensor
The operation information of operation panel 3, entire car controller 1 pass through gearshift 4 and motor control according to opening information and operation information
Device 5 controls driving motor operation, and entire car controller 1 goes to control also according to opening information and operation information by battery management system 7
The output of brake force battery 9, and pass through electronic stability control module 6(abbreviation ESP) go to control the stabilization of vehicle body;Implementation step
It is: 1) the aperture section of accelerator pedal 2 is divided into the braking section of acceleration area, entire car controller 1 is opened according to accelerator pedal
Information is spent, sends and orders to electric machine controller 5, if the value of opening information is not more than predetermined threshold value, and aperture change rate is less than
Predetermined threshold value, then entire car controller 1 sends negative torque order to electric machine controller 5, and automobile realizes braking function, if aperture is believed
The value of breath is greater than predetermined threshold value, then entire car controller 1 sends positive-torque order to electric machine controller 5, and automobile realizes advance function
Energy;Opening information includes the aperture of accelerator pedal and the change rate of accelerator pedal, and change rate is opening for accelerator pedal previous moment
Degree subtracts current time aperture;2) the regenerative torque T being calculated is sent to electric machine controller 5 by entire car controller 1;Regenerative braking
The calculation method of torque T are as follows: when change rate>2% of accelerator pedal 2 and 2 practical aperture B<30% of accelerator pedal, stepped on according to acceleration
The product of logic aperture F and recycling intensity R and maximum allowable braking torque T1 that the practical aperture B of plate 2 is mapped are T2,
The maximum braking torque Tmax that T2 and battery management system 7 allow is taken into big value more afterwards, guarantees that the electric current of feedback is no more than
Permissible value is expressed as using mathematical formulae, T2=F × R × T1, if T2 > Tmax, T=T2, otherwise T=Tmax, calculated result are defeated
Out to electric machine controller;Recycling intensity R is the percentage of the maximum braking torque under different speeds, which is marked according to real vehicle
It is fixed, it is as a result stored in speed-recycling intensity dimensional table, since braking torque is according to direct after pedal opening calculated result
Output, therefore in deboost phase driver different braking effects can be realized according to change accelerator open degree is intended to.
The relationship of opening information and torque are as follows: when aperture is 30% be regenerative braking capability, when aperture changes to 0 from 30%
When, regenerative braking torque changes to maximum from 0, and is linear increase, and when aperture is 100%, acceleration torque is maximum value, when
Accelerator pedal 2 is discharged from 30% aperture, and change rate is greater than 2%, and automobile is in on-position, when aperture is in 100%, automobile
In forward travel state.
The calculation method of positive-torque are as follows: according to the practical aperture B of accelerator pedal 2, set B > 30%, what is mapped is described
Logic aperture F, the practical aperture of accelerator pedal 2 is 100% in the logic aperture of 100% mapping, by F as the defeated of entire car controller 1
Enter, the meter that entire car controller 1 looks into accelerator pedal aperture and revolving speed calculates actual logic aperture, and by actual logic aperture and motor
Output of the product that the table of external characteristics is multiplied with Motor torque T3 as positive-torque.Therefore when the practical aperture of accelerator pedal 2 >
When 30%, then it is in acceleration mode, if practical aperture < 30% of accelerator pedal 2 and 2 change rate < 2, F of accelerator pedal is restricted to
0, positive-torque is not exported at this time, and vehicle is in sliding state.
Claims (3)
1. a kind of regenerating braking energy recycling and control method of electric car, it is characterised in that: use brake of battery truck
It realizes, which includes entire car controller, and the entire car controller receives the aperture for being equipped with the accelerator pedal of jaw opening sensor
The operation information of information and button operation panel, the entire car controller pass through according to the opening information and the operation information
Gearshift and electric machine controller control driving motor operation, the entire car controller is also according to the opening information and the behaviour
Make the output that information removes control power battery by battery management system, and control vehicle body is gone by electronic stability control module
Stablize;Implementation step is: 1) the aperture section of the accelerator pedal is divided into the braking section of acceleration area, the vehicle control
According to the opening information of the accelerator pedal, Xiang Suoshu electric machine controller is sent orders device processed, if the opening information
Value is not more than predetermined threshold value, and aperture change rate is greater than predetermined threshold value, then the entire car controller is to the motor control
Device sends negative torque order, and automobile realizes braking function, if the value of the opening information is greater than predetermined threshold value, the vehicle
Controller sends positive-torque order to the electric machine controller, and automobile realizes advancement function;The opening information includes described adds
The change rate of the aperture of speed pedal and the accelerator pedal, the change rate subtracts for the aperture of the accelerator pedal previous moment works as
Preceding moment aperture;2) entire car controller calculates the size of regenerative braking torque T, and the T being calculated is sent to
The electric machine controller, T are a negative values;The calculation method of the regenerative braking torque T are as follows: when change rate > 2% of accelerator releasing
And when the practical aperture B < 30% of accelerator pedal, according to the practical aperture B of the accelerator pedal logic aperture F mapped and recycling
The product of intensity R and maximum allowable braking torque T1 are T2, the maximum braking torque Tmax that T2 and battery are allowed relatively after
Big value is taken, guarantees that the electric current of feedback is no more than permissible value, is expressed as using mathematical formulae, T2=F × R × T1, if T2 >
Tmax, then T=T2, otherwise T=Tmax, calculated result are exported to electric machine controller;The recycling intensity R be under different speeds most
The percentage of big braking torque, the value are demarcated according to real vehicle, are as a result stored in speed-recycling intensity dimensional table, by
It directly exports after being according to pedal opening calculated result in braking torque, therefore can be changed according to intention in deboost phase driver
Become accelerator open degree and realizes different braking effects.
2. the regenerating braking energy recycling and control method of electric car according to claim 1, it is characterised in that: described to open
Spend the relationship of information and torque are as follows: when the aperture is 0~30% be regenerative braking capability, when the aperture is from 30%~0 variation
When, regenerative braking torque is linear increase from 0~maximum, when the aperture is 30%~100%, accelerates torque since 0
It is gradually increased;The aperture is in 0~30%, and the change rate is greater than 2%, i.e., the described accelerator pedal is in release conditions, automobile
In on-position, when the aperture is 30~100%, the accelerator pedal is in and steps on state, and automobile is in advance shape
State.
3. the regenerating braking energy recycling and control method of electric car according to claim 1 or 2, it is characterised in that: institute
State the calculation method of positive-torque are as follows: according to the practical aperture B of the accelerator pedal, set B > 30%, the logic mapped
Aperture F, the practical aperture of accelerator pedal is 0~100% in the logic aperture of 30%~100% mapping, by F as the vehicle
The input of controller, the entire car controller looks into the accelerator pedal aperture and the meter of revolving speed calculates actual logic aperture, and will
The product that the actual logic aperture is multiplied with the Motor torque T3 that the table of motor external characteristics obtains is as the positive-torque
Output;Therefore when the practical aperture of the accelerator pedal > 30%, then it is in acceleration mode, if the accelerator pedal is actually opened
Degree < 30% and accelerator pedal change rate < 2, then F is restricted to 0, does not export positive-torque at this time, and vehicle is in sliding state.
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Cited By (5)
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CN110979018A (en) * | 2019-12-27 | 2020-04-10 | 宝能(广州)汽车研究院有限公司 | Vehicle, control method and device thereof, electronic device and storage medium |
CN111098717A (en) * | 2019-12-20 | 2020-05-05 | 中国第一汽车股份有限公司 | Single-pedal control method, device and system for electric automobile |
CN113400935A (en) * | 2021-07-01 | 2021-09-17 | 上汽大通房车科技有限公司 | Dual function pedal control system |
CN113547930A (en) * | 2021-07-30 | 2021-10-26 | 重庆长安新能源汽车科技有限公司 | Intelligent energy-saving control method and device for following running of pure electric vehicle and vehicle |
CN113650622A (en) * | 2021-07-16 | 2021-11-16 | 东风柳州汽车有限公司 | Vehicle speed trajectory planning method, device, equipment and storage medium |
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