CN110281776A - Electric automobile energy recovery method and device - Google Patents
Electric automobile energy recovery method and device Download PDFInfo
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- CN110281776A CN110281776A CN201910613463.8A CN201910613463A CN110281776A CN 110281776 A CN110281776 A CN 110281776A CN 201910613463 A CN201910613463 A CN 201910613463A CN 110281776 A CN110281776 A CN 110281776A
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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
-
- 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
-
- 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
- B60L2240/10—Vehicle control parameters
-
- 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
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
-
- 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
- B60L2240/421—Speed
-
- 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 embodiment of the invention discloses a kind of electric automobile energy recovery methods, this method comprises: when electric car enters energy recuperation mode, according to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, braking aperture, the first torque gain coefficient is obtained；Torque is recycled according to the first torque gain coefficient and preset benchmark, determines the first recycling torque；The second recycling torque is obtained according to preset benchmark regenerative power；According to the first recycling torque, the second recycling torque, the charge power of battery permission and the power generation torque of motor, the motor recycling torque of motor is determined；Control motor output motor recycles torque to carry out energy regenerating.The present invention controls the energy regenerating of electric car according to multiple parameters such as the braking apertures of the current vehicle speed of electric car, the grade information of the road of current driving, energy regenerating grade and brake pedal, improves the recovery efficiency of energy.
Description
Technical field
The present invention relates to electric car field, in particular to a kind of electric automobile energy recovery method and device.
Background technique
With the research and development of pure electric automobile, new-energy automobile is rapidly progressed, and battery system is as new energy
The power source of source automobile, it is more and more important using energy content of battery raising new-energy automobile course continuation mileage, in order to improve the electronic vapour
The course continuation mileage of vehicle becomes a kind of necessity to electric automobile energy recycling.
Electric automobile energy is recycled in the related technology, energy regenerating is carried out according to speed.
In the implementation of the present invention, inventor find the relevant technologies the prior art has at least the following problems:
In the related technology in electric automobile energy recycling, energy regenerating can only be controlled according to single parameter speed, reduced
The efficiency of energy regenerating.
Summary of the invention
The embodiment of the invention provides a kind of electric automobile energy recovery method and devices, and the effect of energy regenerating can be improved
Rate.Technical solution is as follows:
The embodiment of the invention provides a kind of electric automobile energy recovery methods, which comprises
Judge whether electric car enters energy recuperation mode；
When the electric car enters energy recuperation mode, current vehicle speed, the current driving of the electric car are obtained
The grade information of road, energy regenerating grade, the braking aperture of brake pedal, the charge power that battery allows and motor hair
Electric torque；
According to the current vehicle speed, the grade information of the road of the current driving, the energy regenerating grade, the system
Dynamic aperture, obtains the first torque gain coefficient；
Torque is recycled according to the first torque gain coefficient and preset benchmark, determines the first recycling torque；
The second recycling torque is obtained according to preset benchmark regenerative power；
According to the first recycling torque, the second recycling torque, the charge power of battery permission and the motor
Power generation torque determines the motor recycling torque of motor；
It controls the motor and exports the motor recycling torque to carry out energy regenerating.
It is optionally, described to judge whether electric car enters energy recuperation mode, comprising:
Obtain throttle signal and gear signal；
Sentenced according to the charge power that the throttle signal, the gear signal, the current vehicle speed and the battery allow
Whether the electric car that breaks enters energy recuperation mode.
Optionally, it is described according to the throttle signal, the gear signal, the current vehicle speed and the battery allow
Charge power judges whether the electric car enters energy recuperation mode, comprising:
When meeting first condition, second condition, third condition and fourth condition, then electric car enters energy regenerating mould
Formula；
Wherein, it is the signal that do not step on the throttle that the first condition, which includes: the throttle signal,；
The second condition includes: that the gear signal is forward gear signal or retreating gear signal；
The third condition includes: that the current vehicle speed is greater than preset vehicle speed；
The fourth condition includes: that the charge power of the battery permission is greater than zero.
Optionally, described according to the current vehicle speed, the grade information of the road of the current driving, the energy regenerating
Grade, the braking aperture, obtain the first torque gain coefficient, comprising:
Obtain the energy regenerating duration of the electric car；
According to the current vehicle speed, the grade information of the road of the current driving, the energy regenerating grade, the system
Dynamic aperture and the energy regenerating duration, obtain the first torque gain coefficient.
Optionally, described according to the current vehicle speed, the grade information of the road of the current driving, the energy regenerating
Grade, the braking aperture and energy regenerating duration, obtain the first torque gain coefficient, comprising:
In the mapping table of speed and the first gain coefficient, the first gain system corresponding to the current vehicle speed is searched
Number；
In the mapping table of grade information and the second gain coefficient, the second increasing corresponding to the grade information is searched
Beneficial coefficient；
In the mapping table of energy regenerating grade and third gain coefficient, search corresponding to the energy regenerating grade
Third gain coefficient；
In the mapping table of braking aperture and the 4th gain coefficient, the 4th increasing corresponding to the braking aperture is searched
Beneficial coefficient；
In the mapping table of energy regenerating duration and the 5th gain coefficient, the is searched corresponding to energy regenerating duration
Five gain coefficients；
By first gain coefficient, second gain coefficient, the third gain coefficient, the 4th gain coefficient
It is multiplied with the 5th gain coefficient, obtains the first torque gain coefficient.
It is optionally, described that second recycling torque is obtained according to preset benchmark regenerative power, comprising:
Obtain the current motor revolving speed of the motor；
The current motor revolving speed and the benchmark regenerative power are input in recycling torque formula, obtain described second
Recycle torque, the recycling torque formula are as follows:
M=P × 9550/n；
Wherein, M is the second recycling torque, and P is the benchmark regenerative power, and n is the current motor revolving speed.
Optionally, it is described according to it is described first recycling torque, it is described second recycling torque, battery allow charge power and
The power generation torque of the motor determines the motor recycling torque of motor, comprising:
Third, which is obtained, according to the charge power that battery allows recycles torque；
By the power generation of the first recycling torque, the second recycling torque, the third recycling torque and the motor
Torque is compared, and obtains the hair of the first recycling torque, the second recycling torque, the third recycling torque and the motor
The motor that the minimum value is determined as motor is recycled torque by the minimum value in electric torque.
Optionally, described that torque is recycled according to the first torque gain coefficient and preset benchmark, determine the first recycling
Torque, comprising:
The first torque gain coefficient is multiplied with the preset benchmark recycling torque, first recycling is obtained and turns round
Square.
The embodiment of the invention provides a kind of electric automobile energy recyclable device, described device includes:
Judgment module, for judging whether electric car enters energy recuperation mode；
Module is obtained, for obtaining the current of the electric car when the electric car enters energy recuperation mode
The charging that speed, the grade information of the road of current driving, energy regenerating grade, the braking aperture of brake pedal, battery allow
The power generation torque of power and motor；
First determining module, for grade information, the energy according to the current vehicle speed, the road of the current driving
Amount recycling grade, the braking aperture, obtain the first torque gain coefficient；
Second determining module determines for recycling torque according to the first torque gain coefficient and preset benchmark
One recycling torque；
Third determining module, for obtaining the second recycling torque according to preset benchmark regenerative power；
4th determining module, the charging for being allowed according to the first recycling torque, the second recycling torque, battery
The power generation torque of power and the motor determines the motor recycling torque of motor；
Control module carries out energy regenerating for controlling the motor output motor recycling torque.
Optionally, the judgment module, is also used to:
Obtain throttle signal and gear signal；
Sentenced according to the charge power that the throttle signal, the gear signal, the current vehicle speed and the battery allow
Whether the electric car that breaks enters energy recuperation mode.
Optionally, the judgment module, is also used to:
When meeting first condition, second condition, third condition and fourth condition, then electric car enters energy regenerating mould
Formula；
Wherein, it is the signal that do not step on the throttle that the first condition, which includes: the throttle signal,；
The second condition includes: that the gear signal is forward gear signal or retreating gear signal；
The third condition includes: that the current vehicle speed is greater than preset vehicle speed；
The fourth condition includes: that the charge power of the battery permission is greater than zero.
Optionally, the first determining module is also used to:
Obtain the energy regenerating duration of the electric car；
According to the current vehicle speed, the grade information of the road of the current driving, the energy regenerating grade, the system
Dynamic aperture and the energy regenerating duration, obtain the first torque gain coefficient.
Optionally, the first determining module is also used to:
In the mapping table of speed and the first gain coefficient, the first gain system corresponding to the current vehicle speed is searched
Number；
In the mapping table of grade information and the second gain coefficient, the second increasing corresponding to the grade information is searched
Beneficial coefficient；
In the mapping table of energy regenerating grade and third gain coefficient, search corresponding to the energy regenerating grade
Third gain coefficient；
In the mapping table of braking aperture and the 4th gain coefficient, the 4th increasing corresponding to the braking aperture is searched
Beneficial coefficient；
In the mapping table of energy regenerating duration and the 5th gain coefficient, the is searched corresponding to energy regenerating duration
Five gain coefficients；
By first gain coefficient, second gain coefficient, the third gain coefficient, the 4th gain coefficient
It is multiplied with the 5th gain coefficient, obtains the first torque gain coefficient.
Optionally, third determining module is also used to:
Obtain the current motor revolving speed of the motor；
The current motor revolving speed and the benchmark regenerative power are input in recycling torque formula, obtain described second
Recycle torque, the recycling torque formula are as follows:
M=P × 9550/n；
Wherein, M is the second recycling torque, and P is the benchmark regenerative power, and n is the current motor revolving speed.
Optionally, the 4th determining module is also used to:
Third, which is obtained, according to the charge power that battery allows recycles torque；
By the power generation of the first recycling torque, the second recycling torque, the third recycling torque and the motor
Torque is compared, and obtains the hair of the first recycling torque, the second recycling torque, the third recycling torque and the motor
The motor that the minimum value is determined as motor is recycled torque by the minimum value in electric torque.
Optionally, the second determining module is also used to:
The first torque gain coefficient is multiplied with the preset benchmark recycling torque, first recycling is obtained and turns round
Square.
Technical solution bring beneficial effect provided in an embodiment of the present invention includes at least:
Method provided in an embodiment of the present invention, can be according to the current vehicle speed of electric car, the slope of the road of current driving
The energy regenerating of the multiple parameters such as the braking aperture of information, energy regenerating grade and brake pedal control electric car is spent, thus
Improve the recovery efficiency of energy.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of flow chart of electric automobile energy recovery method provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of electric automobile energy recovery method provided in an embodiment of the present invention；
Fig. 3 is a kind of block diagram of electric automobile energy recyclable device provided in an embodiment of the present invention.
Specific embodiment
Unless otherwise defined, all technical terms used in the embodiment of the present invention all have usual with those skilled in the art
The identical meaning understood.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
An exemplary embodiment of the invention provides a kind of electric automobile energy recovery method, as shown in Figure 1, this method
Process flow may include following step:
Step S101, judges whether electric car enters energy recuperation mode；
Step S102 obtains current vehicle speed, the current driving of electric car when electric car enters energy recuperation mode
The grade information of road, energy regenerating grade, the braking aperture of brake pedal, the charge power that battery allows and motor hair
Electric torque；
Step S103 according to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, brakes aperture,
Obtain the first torque gain coefficient；
Step S104 recycles torque according to the first torque gain coefficient and preset benchmark, determines the first recycling torque；
Step S105 obtains the second recycling torque according to preset benchmark regenerative power；
Step S106, according to the power generation of charge power and motor that the first recycling torque, the second recycling torque, battery allow
Torque determines the motor recycling torque of motor；
Step S107, control motor output motor recycle torque to carry out energy regenerating.
The present invention provides a kind of electric automobile energy recovery methods, judge whether electric car enters energy regenerating mould
Formula；When electric car enters energy recuperation mode, the current vehicle speed of electric car, the gradient of the road of current driving letter are obtained
Breath, energy regenerating grade, the braking aperture of brake pedal, battery allow charge power and motor power generation torque；According to working as
Preceding speed, the grade information of the road of current driving, energy regenerating grade, braking aperture, obtain the first torque gain coefficient；Root
Torque is recycled according to the first torque gain coefficient and preset benchmark, determines the first recycling torque；Function is recycled according to preset benchmark
Rate obtains the second recycling torque；According to the first recycling torque, the second recycling torque, the charge power of battery permission and the hair of motor
Electric torque determines the motor recycling torque of motor；Control motor output motor recycles torque to carry out energy regenerating.The present invention is real
It applies in example, it can be according to the current vehicle speed of electric car, the grade information of the road of current driving, energy regenerating grade and braking
The multiple parameters such as the braking aperture of pedal control the energy regenerating of electric car, the recovery efficiency of energy are improved, to increase
The course continuation mileage of electric car.
Wherein, judge whether electric car enters energy recuperation mode, comprising:
Obtain throttle signal and gear signal；
According to throttle signal, gear signal, current vehicle speed and battery allow charge power judge electric car whether into
Enter energy recuperation mode.
Wherein, judge that electric car is according to the charge power that throttle signal, gear signal, current vehicle speed and battery allow
It is no to enter energy recuperation mode, comprising:
When meeting first condition, second condition, third condition and fourth condition, then electric car enters energy regenerating mould
Formula；
Wherein, it is the signal that do not step on the throttle that first condition, which includes: throttle signal,；
Second condition includes: that gear signal is forward gear signal or retreating gear signal；
Third condition includes: that current vehicle speed is greater than preset vehicle speed；
Fourth condition includes: that the charge power of battery permission is greater than zero.
Wherein, it according to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, braking aperture, obtains
First torque gain coefficient, comprising:
Obtain the energy regenerating duration of electric car；
According to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, braking aperture and energy regenerating
Duration obtains the first torque gain coefficient.
Wherein, according to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, braking aperture and energy
Amount recycling duration, obtains the first torque gain coefficient, comprising:
In the mapping table of speed and the first gain coefficient, the first gain coefficient corresponding to current vehicle speed is searched；
In the mapping table of grade information and the second gain coefficient, the second gain system corresponding to grade information is searched
Number；
In the mapping table of energy regenerating grade and third gain coefficient, the is searched corresponding to energy regenerating grade
Three gain coefficients；
In the mapping table of braking aperture and the 4th gain coefficient, the 4th gain system corresponding to braking aperture is searched
Number；
In the mapping table of energy regenerating duration and the 5th gain coefficient, the is searched corresponding to energy regenerating duration
Five gain coefficients；
By the first gain coefficient, the second gain coefficient, third gain coefficient, the 4th gain coefficient and the 5th gain coefficient phase
Multiply, obtains the first torque gain coefficient.
Wherein, the second recycling torque is obtained according to preset benchmark regenerative power, comprising:
Obtain the current motor revolving speed of motor；
Current motor revolving speed and benchmark regenerative power are input in recycling torque formula, the second recycling torque is obtained, is returned
Receive torque formula are as follows:
M=P × 9550/n；
Wherein, M is the second recycling torque, and P is benchmark regenerative power, and n is current motor revolving speed.
Wherein, the power generation of the charge power and motor that are allowed according to the first recycling torque, the second recycling torque, battery is turned round
Square determines the motor recycling torque of motor, comprising:
Third, which is obtained, according to the charge power that battery allows recycles torque；
The power generation torque that first recycles torque, the second recycling torque, third recycling torque and motor is compared, is obtained
First recycling torque, the second recycling torque, third recycle the minimum value in the power generation torque of torque and motor, and minimum value is determined
Torque is recycled for the motor of motor.
Wherein, torque is recycled according to the first torque gain coefficient and preset benchmark, determines the first recycling torque, comprising:
First torque gain coefficient is multiplied with preset benchmark recycling torque, obtains the first recycling torque.
All the above alternatives can form alternative embodiment of the invention using any combination, herein no longer
It repeats one by one.
An exemplary embodiment of the invention provides a kind of electric automobile energy recovery method, as shown in Fig. 2, this method
Process flow may include following step:
Step S201, judges whether electric car enters energy recuperation mode.
Wherein, judge whether electric car enters energy recuperation mode, comprising:
Obtain throttle signal and gear signal；
According to throttle signal, gear signal, current vehicle speed and battery allow charge power judge electric car whether into
Enter energy recuperation mode.
In some embodiments of the invention, the charging allowed according to throttle signal, gear signal, current vehicle speed and battery
Power judges whether electric car enters energy recuperation mode, comprising: when meet first condition, second condition, third condition and
When fourth condition, then electric car enters energy recuperation mode；
Wherein, it is the signal that do not step on the throttle that first condition, which includes: throttle signal,；
Second condition includes: that gear signal is forward gear signal or retreating gear signal；
Third condition includes: that current vehicle speed is greater than preset vehicle speed；
Fourth condition includes: that the charge power of battery permission is greater than zero.
It should be noted that throttle signal includes the signal that do not step on the throttle and the signal stepped on the throttle, when detecting
Throttle signal be that the gas pedal of the signal instruction electric car that do not step on the throttle is not operated, when the throttle signal of detection
Gas pedal for the signal instruction electric car stepped on the throttle is operated, such as: the signal that do not step on the throttle can use number
" 0 " indicates, the signal stepped on the throttle can be indicated with digital " 1 ", when the throttle signal received is " 0 ", electronic vapour
The gas pedal of vehicle is not operated, meets first condition.
In some embodiments of the invention, preset vehicle speed can be vehicle driving at a constant speed under natural sliding state
Speed.
The energy recuperation mode of electric car may include two kinds, and one is energy regeneratings when vehicle sliding deceleration, separately
The energy regenerating to be touched on the brake when braking one is vehicle.
Vehicle is under natural sliding state, when electric car is from fast state coastdown to the stable speed, electricity
Chance output motor recycles torque so that motor is in power generation mode, so that motor be made to carry out energy regenerating.
It should be noted that natural sliding state refers to that the gear of electric car is located at forward gear or retroversion gear and throttle is stepped on
The state that plate and brake pedal are not operated.
In some embodiments of the invention, the charge power that battery allows refers to that battery is receivable in the charge state
Charge power.
Step S202 obtains current vehicle speed, the current driving of electric car when electric car enters energy recuperation mode
The grade information of road, energy regenerating grade, the braking aperture of brake pedal, the charge power that battery allows and motor hair
Electric torque.
In some embodiments of the invention, current vehicle speed passes through vehicle speed sensor real-time detection and is sent to full-vehicle control
Device, so that entire car controller gets current vehicle speed.
Wherein, grade information refers to the tangent value of acute angle folded between the road of current driving and level road.Currently
The grade information of the road of traveling is detected by Slope Transducer and is sent to entire car controller, so that entire car controller obtains
Get the grade information.
Energy regenerating grade is electricity determined by the triggering according to user to function button corresponding to energy regenerating grade
Function button corresponding to energy regenerating grade is provided on electrical automobile, different energy regenerating grades corresponds to different functions
Key, energy regenerating bigger grade, and the corresponding energy regenerating intensity of energy regenerating grade also enhances.Such as: it can on electric car
It is low, medium and high corresponding function button to be provided with energy regenerating grade.In some embodiments of the invention, electronic vapour
Also energy regenerating grade corresponding instrument board from low to high can be set on vehicle, chosen on the corresponding position of instrument board pair
The energy regenerating grade answered.
It should be noted that under energy recuperation mode, when user does not select energy regenerating grade, entire car controller meeting
Preset energy regenerating grade is obtained as the corresponding energy regenerating grade of energy regenerating.
In some embodiments of the invention, the braking aperture of brake pedal is for indicating the journey that brake pedal is operated
Degree.
The power generation torque of motor is to calculate to obtain according to the rated power and motor speed of motor, by current motor revolving speed and
Power input obtains the power generation torque of motor into following formula depending on motor.
M=P × 9550/n；
Wherein, M is the power generation torque of motor, and P is power, and n is current motor revolving speed.
Step S203 obtains the energy regenerating duration of electric car.
It should be noted that energy regenerating duration refers to by the end of current time, the lasting duration of energy recovery process.
Energy payback time can carry out timing by timer, and entire car controller gets the energy regenerating duration from timer.
Step S204, according to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, braking aperture
With energy regenerating duration, the first torque gain coefficient is obtained.
Wherein, according to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, braking aperture and energy
Amount recycling duration, obtains the first torque gain coefficient, comprising:
In the mapping table of speed and the first gain coefficient, the first gain coefficient corresponding to current vehicle speed is searched；
In the mapping table of grade information and the second gain coefficient, the second gain system corresponding to grade information is searched
Number；
In the mapping table of energy regenerating grade and third gain coefficient, the is searched corresponding to energy regenerating grade
Three gain coefficients；
In the mapping table of braking aperture and the 4th gain coefficient, the 4th gain system corresponding to braking aperture is searched
Number；
In the mapping table of energy regenerating duration and the 5th gain coefficient, the is searched corresponding to energy regenerating duration
Five gain coefficients；
By the first gain coefficient, the second gain coefficient, third gain coefficient, the 4th gain coefficient and the 5th gain coefficient phase
Multiply, obtains the first torque gain coefficient.
It should be noted that energy recovery scheme in the prior art, when vehicle driving up and when carrying out energy regenerating, go up a slope
Resistance and regenerative braking power are cumulative, and vehicle deceleration is too fast, and driving experience is poor.When vehicle descending and carry out energy regenerating
When, since gravity influences, energy regenerating intensity is insufficient, cannot recycle more energy, be searched in the application by grade information
To corresponding second gain coefficient, it can guarantee energy on deceleration of the vehicle in uphill, downhill energy regenerating and straight road surface
Deceleration when recycling is suitable, improves driver comfort.
Step S205 recycles torque according to the first torque gain coefficient and preset benchmark, determines the first recycling torque.
Wherein, torque is recycled according to the first torque gain coefficient and preset benchmark, determines the first recycling torque, comprising:
First torque gain coefficient is multiplied with preset benchmark recycling torque, obtains the first recycling torque.
It should be noted that preset benchmark recycling torque can motor recycling be turned round under low speed state to motor speed
Square is limited, and so that motor speed electric car deceleration in low speed state is become smaller, smooth ride.
Step S206 obtains the second recycling torque according to preset benchmark regenerative power.
Wherein, the second recycling torque is obtained according to preset benchmark regenerative power, comprising:
Obtain the current motor revolving speed of motor；
Current motor revolving speed and benchmark regenerative power are input in recycling torque formula, the second recycling torque is obtained, is returned
Receive torque formula are as follows:
M=P × 9550/n；
Wherein, M is the second recycling torque, and P is benchmark regenerative power, and n is current motor revolving speed.
It should be noted that preset benchmark regenerative power can motor recycling be turned round under high-speed state to motor speed
Square is limited.
Step S207, according to the power generation of charge power and motor that the first recycling torque, the second recycling torque, battery allow
Torque determines the motor recycling torque of motor.
Wherein, the power generation of the charge power and motor that are allowed according to the first recycling torque, the second recycling torque, battery is turned round
Square determines the motor recycling torque of motor, comprising:
Third, which is obtained, according to the charge power that battery allows recycles torque；
The power generation torque that first recycles torque, the second recycling torque, third recycling torque and motor is compared, is obtained
First recycling torque, the second recycling torque, third recycle the minimum value in the power generation torque of torque and motor, and minimum value is determined
Torque is recycled for the motor of motor.
In some embodiments of the invention, it can be input to by the revolving speed of the charge power and motor that allow battery
Third recycling torque is obtained in recycling torque formula.
Step S208, control motor output motor recycle torque to carry out energy regenerating.
It should be noted that vehicle is released during exercise more in the operation process that motor exports recycling torque
Complementary energy is translated into electric energy by motor, is then converted to chemical energy and is stored in battery, realizes energy regenerating.
An exemplary embodiment of the invention provides a kind of electric automobile energy recyclable device, as shown in figure 3, device packet
It includes:
Judgment module 301, for judging whether electric car enters energy recuperation mode；
Obtain module 302, for when electric car enters energy recuperation mode, obtain electric car current vehicle speed,
Charge power that the grade information of the road of current driving, energy regenerating grade, the braking aperture of brake pedal, battery allow and
The power generation torque of motor；
First determining module 303, grade information, the energy for the road according to current vehicle speed, current driving return
Grade, the braking aperture are received, the first torque gain coefficient is obtained；
Second determining module 304 is determined for recycling torque according to the first torque gain coefficient and preset benchmark
First recycling torque；
Third determining module 305, for obtaining the second recycling torque according to preset benchmark regenerative power；
4th determining module 306, the charge power for being allowed according to the first recycling torque, the second recycling torque, battery
With the power generation torque of motor, the motor recycling torque of motor is determined；
Control module 307 carries out energy regenerating for controlling motor output motor recycling torque.
Optionally, judgment module 301 are also used to:
Obtain throttle signal and gear signal；
According to throttle signal, gear signal, current vehicle speed and battery allow charge power judge electric car whether into
Enter energy recuperation mode.
Optionally, judgment module 301 are also used to:
When meeting first condition, second condition, third condition and fourth condition, then electric car enters energy regenerating mould
Formula；
Wherein, it is the signal that do not step on the throttle that first condition, which includes: throttle signal,；
Second condition includes: that gear signal is forward gear signal or retreating gear signal；
Third condition includes: that current vehicle speed is greater than preset vehicle speed；
Fourth condition includes: that the charge power of battery permission is greater than zero.
Optionally, the first determining module 303, is also used to:
Obtain the energy regenerating duration of electric car；
According to current vehicle speed, the grade information of the road of current driving, energy regenerating grade, braking aperture and energy regenerating
Duration obtains the first torque gain coefficient.
Optionally, the first determining module 303, is also used to:
In the mapping table of speed and the first gain coefficient, the first gain coefficient corresponding to current vehicle speed is searched；
In the mapping table of grade information and the second gain coefficient, the second gain system corresponding to grade information is searched
Number；
In the mapping table of energy regenerating grade and third gain coefficient, the is searched corresponding to energy regenerating grade
Three gain coefficients；
In the mapping table of braking aperture and the 4th gain coefficient, the 4th gain system corresponding to braking aperture is searched
Number；
In the mapping table of energy regenerating duration and the 5th gain coefficient, the is searched corresponding to energy regenerating duration
Five gain coefficients；
By the first gain coefficient, the second gain coefficient, third gain coefficient, the 4th gain coefficient and the 5th gain coefficient phase
Multiply, obtains the first torque gain coefficient.
Optionally, third determining module 305, is also used to:
Obtain the current motor revolving speed of motor；
Current motor revolving speed and benchmark regenerative power are input in recycling torque formula, the second recycling torque is obtained, is returned
Receive torque formula are as follows:
M=P × 9550/n；
Wherein, M is the second recycling torque, and P is benchmark regenerative power, and n is current motor revolving speed.
Optionally, the 4th determining module 306 is also used to:
Third, which is obtained, according to the charge power that battery allows recycles torque；
The power generation torque that first recycles torque, the second recycling torque, third recycling torque and motor is compared, is obtained
First recycling torque, the second recycling torque, third recycle the minimum value in the power generation torque of torque and motor, and minimum value is determined
Torque is recycled for the motor of motor.
Optionally, the second determining module 304, is also used to:
First torque gain coefficient is multiplied with preset benchmark recycling torque, obtains the first recycling torque.
All the above alternatives can form the alternative embodiment of the disclosure, herein no longer using any combination
It repeats one by one.
The foregoing is merely illustrative embodiments of the invention, the protection scope being not intended to limit the invention is all at this
Within the spirit and principle of invention, any modification, equivalent replacement, improvement and so on should be included in protection model of the invention
Within enclosing.
Claims (10)
1. a kind of electric automobile energy recovery method, which is characterized in that the described method includes:
Judge whether electric car enters energy recuperation mode；
When the electric car enters energy recuperation mode, the current vehicle speed of the electric car, the road of current driving are obtained
The power generation of charge power and motor that grade information, energy regenerating grade, the braking aperture of brake pedal, the battery on road allow is turned round
Square；
It is opened according to the current vehicle speed, the grade information of the road of the current driving, the energy regenerating grade, the braking
Degree, obtains the first torque gain coefficient；
Torque is recycled according to the first torque gain coefficient and preset benchmark, determines the first recycling torque；
The second recycling torque is obtained according to preset benchmark regenerative power；
According to the power generation of charge power and the motor that the first recycling torque, the second recycling torque, battery allow
Torque determines the motor recycling torque of motor；
It controls the motor and exports the motor recycling torque to carry out energy regenerating.
2. judging whether electric car enters energy regenerating mould the method according to claim 1, wherein described
Formula, comprising:
Obtain throttle signal and gear signal；
Institute is judged according to the charge power that the throttle signal, the gear signal, the current vehicle speed and the battery allow
State whether electric car enters energy recuperation mode.
3. according to the method described in claim 2, it is characterized in that, described according to the throttle signal, the gear signal, institute
The charge power for stating current vehicle speed and battery permission judges whether the electric car enters energy recuperation mode, comprising:
When meeting first condition, second condition, third condition and fourth condition, then electric car enters energy recuperation mode；
Wherein, it is the signal that do not step on the throttle that the first condition, which includes: the throttle signal,；
The second condition includes: that the gear signal is forward gear signal or retreating gear signal；
The third condition includes: that the current vehicle speed is greater than preset vehicle speed；
The fourth condition includes: that the charge power of the battery permission is greater than zero.
4. the method according to claim 1, wherein described according to the current vehicle speed, the current driving
The grade information of road, the energy regenerating grade, the braking aperture, obtain the first torque gain coefficient, comprising:
Obtain the energy regenerating duration of the electric car；
It is opened according to the current vehicle speed, the grade information of the road of the current driving, the energy regenerating grade, the braking
Degree and the energy regenerating duration, obtain the first torque gain coefficient.
5. according to the method described in claim 4, it is characterized in that, described according to the current vehicle speed, the current driving
The grade information of road, the energy regenerating grade, the braking aperture and energy regenerating duration, obtain the first torque gain system
Number, comprising:
In the mapping table of speed and the first gain coefficient, the first gain coefficient corresponding to the current vehicle speed is searched；
In the mapping table of grade information and the second gain coefficient, the second gain system corresponding to the grade information is searched
Number；
In the mapping table of energy regenerating grade and third gain coefficient, the is searched corresponding to the energy regenerating grade
Three gain coefficients；
In the mapping table of braking aperture and the 4th gain coefficient, the 4th gain system corresponding to the braking aperture is searched
Number；
In the mapping table of energy regenerating duration and the 5th gain coefficient, the 5th increasing corresponding to energy regenerating duration is searched
Beneficial coefficient；
By first gain coefficient, second gain coefficient, the third gain coefficient, the 4th gain coefficient and institute
The multiplication of the 5th gain coefficient is stated, the first torque gain coefficient is obtained.
6. the method according to claim 1, wherein described obtain second time according to preset benchmark regenerative power
Receive torque, comprising:
Obtain the current motor revolving speed of the motor；
The current motor revolving speed and the benchmark regenerative power are input in recycling torque formula, second recycling is obtained
Torque, the recycling torque formula are as follows:
M=P × 9550/n；
Wherein, M is the second recycling torque, and P is the benchmark regenerative power, and n is the current motor revolving speed.
7. the method according to claim 1, wherein described according to the first recycling torque, second time described
The power generation torque for receiving torque, the charge power that battery allows and the motor determines the motor recycling torque of motor, comprising:
Third, which is obtained, according to the charge power that battery allows recycles torque；
The first recycling torque, the second recycling torque, the third are recycled to the power generation torque of torque and the motor
It is compared, the power generation for obtaining the first recycling torque, the second recycling torque, third recycling torque and the motor is turned round
The motor that the minimum value is determined as motor is recycled torque by the minimum value in square.
8. the method according to claim 1, wherein described according to the first torque gain coefficient and preset
Benchmark recycles torque, determines the first recycling torque, comprising:
The first torque gain coefficient is multiplied with the preset benchmark recycling torque, obtains the first recycling torque.
9. a kind of electric automobile energy recyclable device, which is characterized in that described device includes:
Judgment module, for judging whether electric car enters energy recuperation mode；
Obtain module, for when the electric car enters energy recuperation mode, obtain the electric car current vehicle speed,
Charge power that the grade information of the road of current driving, energy regenerating grade, the braking aperture of brake pedal, battery allow and
The power generation torque of motor；
First determining module, for being returned according to grade information, the energy of the current vehicle speed, the road of the current driving
Grade, the braking aperture are received, the first torque gain coefficient is obtained；
Second determining module determines first time for recycling torque according to the first torque gain coefficient and preset benchmark
Receive torque；
Third determining module, for obtaining the second recycling torque according to preset benchmark regenerative power；
4th determining module, the charge power for being allowed according to the first recycling torque, the second recycling torque, battery
With the power generation torque of the motor, the motor recycling torque of motor is determined；
Control module carries out energy regenerating for controlling the motor output motor recycling torque.
10. the apparatus according to claim 1, which is characterized in that the judgment module is also used to:
Obtain throttle signal and gear signal；
Institute is judged according to the charge power that the throttle signal, the gear signal, the current vehicle speed and the battery allow
State whether electric car enters energy recuperation mode.
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