CN107298024A - Energy feedback side, system and the vehicle of vehicle - Google Patents
Energy feedback side, system and the vehicle of vehicle Download PDFInfo
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- CN107298024A CN107298024A CN201610236808.9A CN201610236808A CN107298024A CN 107298024 A CN107298024 A CN 107298024A CN 201610236808 A CN201610236808 A CN 201610236808A CN 107298024 A CN107298024 A CN 107298024A
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- 238000000034 method Methods 0.000 claims abstract description 31
- 230000001133 acceleration Effects 0.000 claims abstract description 12
- 230000001172 regenerating effect Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 description 6
- 238000005183 dynamical system Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010186 staining Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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Classifications
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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
-
- 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
-
- 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
- B60L15/28—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 without contact making and breaking, e.g. using a transductor
-
- 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
-
- 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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/44—Control modes by parameter estimation
-
- 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
Abstract
The invention discloses a kind of energy feedback method of vehicle, system and vehicle, this method includes：Judge whether vehicle meets energy feedback condition；If it is, constant Return moment is obtained according to the rotating speed of motor, wherein, constant Return moment is firm power Return moment or constant-torque Return moment；Obtain the maximum charge torque of the maximum charge power corresponding to the maximum electric braking torque of maximum braking acceleration limit value and corresponding to electrokinetic cell；Ceiling capacity Return moment is determined according to constant Return moment, maximum electric braking torque and maximum charge torque；Final energy Return moment is obtained according to energy feedback coefficient and ceiling capacity Return moment, and regenerative braking is carried out according to final energy Return moment controlled motor.The energy feedback method of the vehicle of the embodiment of the present invention can lift energy feedback efficiency, and then reduce energy consumption and be reduced to and stain discharge.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of energy feedback side of vehicle, system and vehicle.
Background technology
At present, pure electric automobile or hybrid vehicle are in order to reduce energy consumption, when vehicle is braked,
Regenerative braking generally is carried out using motor (such as motor), i.e.,：By energy while motor is braked
Power storage is converted into electrokinetic cell.This mode can reduce energy consumption of vehicles, still, correlation technique
In, because the calculating of the Return moment of motor is not accurate enough, so as to cause energy feedback inefficient.
The content of the invention
It is contemplated that at least solving one of technical problem in above-mentioned correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of energy feedback method of vehicle.This method can be with
Energy feedback efficiency is lifted, and then reduces energy consumption and is reduced to and stains discharge.
It is another object of the present invention to provide a kind of energy feedback system of vehicle.
It is yet a further object of the present invention to provide a kind of vehicle.
To achieve these goals, the first aspect of the present invention discloses a kind of energy feedback method of vehicle,
The vehicle includes electrokinetic cell and motor, the described method comprises the following steps：Judge whether vehicle meets energy
Measure feedback condition；If it is, constant Return moment is obtained according to the rotating speed of motor, wherein, it is described constant
Return moment is firm power Return moment or constant-torque Return moment；Obtain and correspond to maximum braking acceleration
Spend the maximum charge torque of the maximum electric braking torque of limit value and the maximum charge power corresponding to electrokinetic cell；
Maximum energy is determined according to the constant Return moment, the maximum electric braking torque and the maximum charge torque
Measure Return moment；Final energy feedback force is obtained according to energy feedback coefficient and the ceiling capacity Return moment
Square, and control the motor to carry out regenerative braking according to the final energy Return moment.
The energy feedback method of vehicle according to embodiments of the present invention, can according to the rotating speed of motor, maximum make
It is more objective and rational that many factors such as the maximum charge power of dynamic acceleration limit value and electrokinetic cell are determined
Ceiling capacity Return moment, and then, energy feedback efficiency can be effectively improved in the follow-up energy feedback stage,
Play reduction energy consumption and be reduced to the purpose for staining discharge.
In addition, the energy feedback method of vehicle according to the above embodiment of the present invention can also have following add
Technical characteristic：
In some instances, the rotating speed according to motor obtains constant Return moment, including：Judge described
Whether the rotating speed of motor is less than desired speed；, will if the rotating speed of the motor is less than the desired speed
Default constant-torque Return moment is used as the constant Return moment；If the rotating speed of the motor be more than or
Equal to the desired speed, then firm power Return moment is calculated according to default firm power, and will be described
Firm power Return moment is used as the constant Return moment.
In some instances, it is described according to the constant Return moment, the maximum electric braking torque and described
Maximum charge torque determines ceiling capacity Return moment, including：By the constant Return moment, the maximum
Minimum one in electric braking torque and the maximum charge torque is used as the ceiling capacity Return moment.
In some instances, the energy feedback coefficient includes sliding energy feedback coefficient and braking energy feedback
Coefficient, wherein, the braking energy feedback coefficient slides feedback energy coefficient, the Brake Energy more than described
Amount feedback coefficient and the feedback energy coefficient that slides are all higher than 0 and less than or equal to 1.
In some instances, it is described to be obtained most according to energy feedback coefficient and the ceiling capacity Return moment
Before whole energy feedback torque, in addition to：Whether detection brake pedal is operated；If the brake pedal
It is not operated, then energy feedback coefficient is slided according to being obtained the rotating speed of speed and the motor；If
The brake pedal is operated, then obtains the braking energy feedback according to the speed and brake pedal aperture
Coefficient.
The embodiment of second aspect of the present invention discloses a kind of energy feedback system of vehicle, and the vehicle includes
Electrokinetic cell and motor, the system include：Judge module, for judging whether vehicle meets energy feedback
Condition；Ceiling capacity Return moment determining module, for judging that the vehicle meets institute in the judge module
When stating energy feedback condition, constant Return moment is obtained according to the rotating speed of motor, and obtain corresponding to maximum system
The maximum charge of the maximum electric braking torque of dynamic acceleration limit value and the maximum charge power corresponding to electrokinetic cell
Torque, and according to the constant Return moment, the maximum electric braking torque and the maximum charge torque
Ceiling capacity Return moment is determined, wherein, the constant Return moment is firm power Return moment or constant
Moment of torsion Return moment；Control module, for being obtained according to energy feedback coefficient and the ceiling capacity Return moment
The motor is controlled to carry out feedback system to final energy Return moment, and according to the final energy Return moment
It is dynamic.
The energy feedback system of vehicle according to embodiments of the present invention, can according to the rotating speed of motor, maximum make
It is more objective and rational that many factors such as the maximum charge power of dynamic acceleration limit value and electrokinetic cell are determined
Ceiling capacity Return moment, and then, energy feedback efficiency can be effectively improved in the follow-up energy feedback stage,
Play reduction energy consumption and be reduced to the purpose for staining discharge.
In addition, the energy feedback system of vehicle according to the above embodiment of the present invention can also have following add
Technical characteristic：
In some instances, the ceiling capacity Return moment determining module obtains constant according to the rotating speed of motor
Return moment, including：Judge whether the rotating speed of the motor is less than desired speed；If turn of the motor
Speed is less than the desired speed, then regard default constant-torque Return moment as the constant Return moment；
If the rotating speed of the motor is more than or equal to the desired speed, calculate permanent according to default firm power
Determine power back off torque, and regard the firm power Return moment as the constant Return moment.
In some instances, the energy feedback coefficient includes sliding energy feedback coefficient and braking energy feedback
Coefficient, wherein, the braking energy feedback coefficient slides feedback energy coefficient, the Brake Energy more than described
Amount feedback coefficient and the feedback energy coefficient that slides are all higher than 0 and less than or equal to 1.
In some instances, the control module is additionally operable to according to energy feedback coefficient and the ceiling capacity
Return moment is obtained before final energy Return moment, and whether detection brake pedal is operated, and in the system
When dynamic pedal is not operated, energy feedback coefficient is slided according to being obtained the rotating speed of speed and the motor,
And when the brake pedal is operated, the Brake Energy is obtained according to the speed and brake pedal aperture
Measure feedback coefficient.
The embodiment of third aspect present invention discloses a kind of vehicle, including：According to any one above-mentioned implementation
The energy feedback system of vehicle described in example.The vehicle can lift energy feedback efficiency, and then reduce energy consumption
Discharge is stained with being reduced to.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly be retouched from following
Become obvious in stating, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from description of the accompanying drawings below to embodiment is combined
It will be apparent and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram of the dynamical system of vehicle according to an embodiment of the invention；
Fig. 2 is the flow chart of the energy feedback method of vehicle according to an embodiment of the invention；
Fig. 3 be vehicle according to an embodiment of the invention energy feedback method in ceiling capacity Return moment
The flow chart of calculating；
Fig. 4 be vehicle according to an embodiment of the invention energy feedback method in final energy Return moment
The flow chart of calculating；And
Fig. 5 is the structured flowchart of the energy feedback system of vehicle according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein certainly
Beginning to same or similar label eventually represents same or similar element or the member with same or like function
Part.The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining the present invention, and can not
It is interpreted as limitation of the present invention.
Energy feedback method, system and the vehicle of vehicle according to embodiments of the present invention are described below in conjunction with accompanying drawing.
Wherein, the vehicle of the embodiment of the present invention includes electrokinetic cell and motor, i.e.,：Vehicle is pure electric automobile
Or hybrid vehicle.If hybrid vehicle, as shown in figure 1, being the one of hybrid vehicle
The dynamical system of the form of kind, the dynamical system includes engine 1, ISG motors 2, ISG motor inverters 3
(i.e.：ISG MCU, MicroControllerUnit), rear-guard motor 4 (i.e.：TM motors), rear-guard electricity
Machine inverter 5 is (i.e.：TM MUC), electrokinetic cell 6, battery management system 7 (i.e. BMS, BATTERY
MANAGEMENT SYSTEM) and hybrid controller 8 is (i.e.：HCU, Hybrid Control Unit)
Deng, wherein ISG motors 2 have concurrently startup engine 1, generating function, while can also carry out engine 1
Process auxiliary drive, engine 1 can adjust the operating point of oneself using the generating function of ISG motors 2, carry
The operating efficiency of high engine 1.TM motors 4 can drive what vehicle was travelled as vehicle driving part
Braking moment can be also exported simultaneously, the kinetic energy of vehicle is converted into power storage to electrokinetic cell 6.TM electricity
Machine 4 and ISG motors 2 share one piece of electrokinetic cell 6.Hybrid controller 8 (HCU) is vehicle control
Device processed, is responsible for supervision and coordinates the communication between driver, each MCU, BMS etc., execution sequence with
And running status etc..It is understood that shown in Fig. 1 being only a form of dynamic of hybrid vehicle
The structure of Force system, the dynamical system of hybrid vehicle can also be the structure of other forms.
Fig. 2 is the flow chart of the energy feedback method of vehicle according to an embodiment of the invention.
As shown in Fig. 2 the energy feedback method of vehicle according to an embodiment of the invention, including following step
Suddenly：
S201：Judge whether vehicle meets energy feedback condition.
Specifically, the rotating speed of accelerator pedal, brake pedal, gear, speed, motor (can such as be schemed
TM motors 4 described in 1), power battery charged state SOC (State of Charge) etc., vehicle therefore
The maximum negative moment that barrier state, dynamical system can be provided at present judged whether determine vehicle with this
In the process of moving, energy feedback condition is met, when meeting energy feedback condition, just can enter energy
Regenerative braking, otherwise, can only lean on the mode of purely mechanic braking to be braked, wherein, energy feeding braking refers to
By while such as TM motors 4 being braked, energy being converted into electric energy and is stored in electrokinetic cell.
S202：If it is, constant Return moment is obtained according to the rotating speed of motor, wherein, constant feedback force
Square is firm power Return moment or constant-torque Return moment.
Wherein, when meeting energy feedback condition, constant Return moment is determined according to the rotating speed of motor first,
Wherein, the rotating speed of motor is different, and constant Return moment is also different.For example：According to the rotating speed of TM motors 4,
In the slow-speed of revolution, using constant-torque mode feedback, the rotating speed of TM motors 4 is in high rotating speed, using perseverance
Determine power mode feedback, wherein, when being set in the slow-speed of revolution torque of feedback be T1 (i.e.：Constant-torque feedback
Torque), the torque of feedback, should be in height for T1 can demarcation be obtained in advance by experiment during the described slow-speed of revolution
Firm power during rotating speed again may be by testing demarcation in advance and obtain.And then, can be according to TM motors
The 4 Return moment T2 in high rotating speed under firm power, calculating firm power is (i.e.：Firm power feedback force
Square).
From the foregoing, it will be observed that constant Return moment is obtained according to the rotating speed of motor, including：Judging the rotating speed of motor is
It is no to be less than desired speed；If the rotating speed of motor is less than desired speed, by default constant-torque feedback force
Square is used as constant Return moment；If the rotating speed of motor is more than or equal to desired speed, according to default perseverance
Determine power calculation firm power Return moment, and regard firm power Return moment as constant Return moment.Its
In, desired speed also can in advance be demarcated by experiment and obtained, and desired speed represents the slow-speed of revolution and high-revolving point
Boundary, when rotating speed is higher than this desired speed, it is believed that TM motors 4 are in high-speed state, conversely, recognizing
Low speed state is in for TM motors 4.
S203：Obtain corresponding to the maximum electric braking torque of maximum braking acceleration limit value and corresponding to power electric
The maximum charge torque of the maximum charge power in pond.
Wherein, according to automotive safety relevant criterion, Automobile Maximum braking deceleration absolute value not should be greater than 0.3g
M/s2 limit value is (i.e.：Maximum braking acceleration limit value), set the corresponding maximum electric braking force of the deceleration
For T3 (i.e.：Maximum electric braking torque), T3 can also demarcation be obtained in advance by experiment.According to power electric
The maximum charge power meter in pond 6 calculates charging torque limit value T4 (i.e.：Maximum charge torque).
S204：Ceiling capacity is determined according to constant Return moment, maximum electric braking torque and maximum charge torque
Return moment.
It should be noted that ceiling capacity Return moment can not be more than constant Return moment, maximum electric braking
Minimum one in torque and maximum charge torque, accordingly, it is determined that the mode of ceiling capacity Return moment is：
It regard minimum one in constant Return moment, maximum electric braking torque and maximum charge torque as maximum energy
Measure Return moment.
Wherein it is determined that the idiographic flow of ceiling capacity Return moment is as shown in figure 3, first determine whether turning for motor
Speed.It is then determined that being determined corresponding to T1 or T2 in motor speed interval, and according to braking relevant criterion
T3 and state according to electrokinetic cell etc. determine T4, finally, by the T1 or T2 that determine, T3 and
T4, which takes, small is worth to ceiling capacity Return moment.
S205：Final energy Return moment is obtained according to energy feedback coefficient and ceiling capacity Return moment, and
Regenerative braking is carried out according to final energy Return moment controlled motor.
The energy feedback method of vehicle according to embodiments of the present invention, can according to the rotating speed of motor, maximum make
It is more objective and rational that many factors such as the maximum charge power of dynamic acceleration limit value and electrokinetic cell are determined
Ceiling capacity Return moment, and then, energy feedback efficiency can be effectively improved in the follow-up energy feedback stage,
Play reduction energy consumption and be reduced to the purpose for staining discharge.
In one embodiment of the invention, energy feedback coefficient includes sliding energy feedback coefficient and Brake Energy
Feedback coefficient is measured, wherein, braking energy feedback coefficient, which is more than, slides feedback energy coefficient, braking energy feedback
Coefficient is all higher than 0 and less than or equal to 1 with feedback energy coefficient is slided.
Therefore, as shown in figure 4, obtaining final energy according to energy feedback coefficient and ceiling capacity Return moment
Before amount Return moment, in addition to：Whether detection brake pedal is operated；If brake pedal is not stepped on
Under, then obtained sliding energy feedback coefficient according to the rotating speed of speed and motor；If brake pedal is operated,
Braking energy feedback coefficient is then obtained according to speed and brake pedal aperture.
Specifically, similar to petrol engine vehicles, sometimes driver is carried out by trampling brake pedal
Braking, does not sometimes step on brake pedal and vehicle slows down naturally.Corresponding to trampling what brake pedal was braked
Process is referred to as braking energy feedback coefficient, corresponding to not stepping on brake pedal and the title of process that car is slowed down
To slide energy feedback coefficient.Therefore, if the non-brake pedal of driver, according to speed and motor
Rotating speed takes small being worth to slide energy feedback coefficient after tabling look-up respectively, if driver's brake pedal,
Look into bivariate table according to speed and brake pedal aperture and obtain braking energy feedback coefficient.Then, maximum energy is used
Amount Return moment is multiplied by corresponding energy feedback coefficient, draws final energy Return moment.
The energy feedback method of vehicle according to embodiments of the present invention, according to the state of brake pedal distinguish whether
Energy feedback is still slided for braking energy feedback, and according to braking energy feedback or to slide energy feedback true
Make it is relatively reasonable slide energy feedback coefficient or braking energy feedback coefficient, so as in follow-up energy
The amount feedback stage further improves energy feedback efficiency, further functions as reduction energy consumption and is reduced to and stains discharge
Purpose.
Fig. 5 is the structured flowchart of the energy feedback system of vehicle according to an embodiment of the invention.Such as Fig. 5
It is shown, the energy feedback system 500 of vehicle according to an embodiment of the invention, including：Judge module 510,
Ceiling capacity Return moment determining module 520 and control module 530.
Wherein, judge module 510 is used to judge whether vehicle meets energy feedback condition.Ceiling capacity feedback
Torque determining module 520 is used for when judge module 510 judges that the vehicle meets the energy feedback condition,
Constant Return moment is obtained according to the rotating speed of motor, and obtains the maximum for corresponding to maximum braking acceleration limit value
The maximum charge torque of electric braking torque and maximum charge power corresponding to electrokinetic cell, and according to described
Constant Return moment, the maximum electric braking torque and the maximum charge torque determine ceiling capacity feedback force
Square, wherein, the constant Return moment is firm power Return moment or constant-torque Return moment.Control
Module 530 is used to obtain final energy feedback force according to energy feedback coefficient and the ceiling capacity Return moment
Square, and control the motor to carry out regenerative braking according to the final energy Return moment.
In one embodiment of the invention, the turning according to motor of ceiling capacity Return moment determining module 520
Speed obtains constant Return moment, including：Judge whether the rotating speed of the motor is less than desired speed；If institute
The rotating speed for stating motor is less than the desired speed, then using default constant-torque Return moment as described constant
Return moment；If the rotating speed of the motor is more than or equal to the desired speed, according to default constant
Power calculation firm power Return moment, and it regard the firm power Return moment as the constant feedback force
Square.
The energy feedback system of vehicle according to embodiments of the present invention, can according to the rotating speed of motor, maximum make
It is more objective and rational that many factors such as the maximum charge power of dynamic acceleration limit value and electrokinetic cell are determined
Ceiling capacity Return moment, and then, energy feedback efficiency can be effectively improved in the follow-up energy feedback stage,
Play reduction energy consumption and be reduced to the purpose for staining discharge.
In one embodiment of the invention, energy feedback coefficient includes sliding energy feedback coefficient and Brake Energy
Feedback coefficient is measured, wherein, the braking energy feedback coefficient slides feedback energy coefficient more than described, described
Braking energy feedback coefficient and the feedback energy coefficient that slides are all higher than 0 and less than or equal to 1.
Further, control module 530 is additionally operable to according to energy feedback coefficient and the ceiling capacity feedback
Torque is obtained before final energy Return moment, and whether detection brake pedal is operated, and is stepped in the braking
When plate is not operated, energy feedback coefficient is slided according to being obtained the rotating speed of speed and the motor, with
And when the brake pedal is operated, the braking energy is obtained according to the speed and brake pedal aperture
Feedback coefficient.
The energy feedback system of vehicle according to embodiments of the present invention, according to the state of brake pedal distinguish whether
Energy feedback is still slided for braking energy feedback, and according to braking energy feedback or to slide energy feedback true
Make it is relatively reasonable slide energy feedback coefficient or braking energy feedback coefficient, so as in follow-up energy
The amount feedback stage further improves energy feedback efficiency, further functions as reduction energy consumption and is reduced to and stains discharge
Purpose.
It should be noted that the specific implementation of the energy feedback system of the vehicle of the embodiment of the present invention and sheet
The specific implementation of the energy feedback method of the vehicle of inventive embodiments is similar, specifically refers to method part
Description, in order to reduce redundancy, do not repeat herein.
Further, embodiment of the invention discloses that a kind of vehicle, including：According to any one above-mentioned reality
Apply the energy feedback system of the vehicle in example.The vehicle can lift energy feedback efficiency, and then reduce energy consumption
Discharge is stained with being reduced to.
In addition, vehicle according to embodiments of the present invention other compositions and effect for this area common skill
All it is known for art personnel, in order to reduce redundancy, does not repeat.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " are defined
Feature can express or implicitly include at least one this feature.In the description of the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ",
Terms such as " fixations " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integral；Can be mechanical connection or electrical connection；Can be joined directly together, can also pass through
Intermediary is indirectly connected to, and can be connection or the interaction relationship of two elements of two element internals,
Unless otherwise clear and definite restriction.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or
" under " can be that the first and second features are directly contacted, or the first and second features are connect indirectly by intermediary
Touch.Moreover, fisrt feature second feature " on ", " top " and " above " but fisrt feature second
Directly over feature or oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature
Second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or tiltedly under
Side, or fisrt feature level height is merely representative of less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ",
The description of " specific example " or " some examples " etc. mean to combine the specific features that the embodiment or example describe,
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual,
Identical embodiment or example are necessarily directed to the schematic representation of above-mentioned term.Moreover, description
Specific features, structure, material or feature can be in any one or more embodiments or example with suitable
Mode is combined.In addition, in the case of not conflicting, those skilled in the art can be by this specification
Described in not be the same as Example or the feature of example and non-be the same as Example or example be combined and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment
It is exemplary, it is impossible to be interpreted as limitation of the present invention, one of ordinary skill in the art is the present invention's
In the range of above-described embodiment can be changed, change, replace and modification.
Claims (10)
1. a kind of energy feedback method of vehicle, it is characterised in that the vehicle includes electrokinetic cell and motor,
It the described method comprises the following steps：
Judge whether vehicle meets energy feedback condition；
If it is, constant Return moment is obtained according to the rotating speed of motor, wherein, the constant Return moment
For firm power Return moment or constant-torque Return moment；
Obtain corresponding to the maximum electric braking torque of maximum braking acceleration limit value and corresponding to electrokinetic cell most
The maximum charge torque of big charge power；
Determined most according to the constant Return moment, the maximum electric braking torque and the maximum charge torque
Big energy feedback torque；
Final energy Return moment, and root are obtained according to energy feedback coefficient and the ceiling capacity Return moment
The motor is controlled to carry out regenerative braking according to the final energy Return moment.
2. the energy feedback method of vehicle according to claim 1, it is characterised in that described according to electricity
The rotating speed of machine obtains constant Return moment, including：
Judge whether the rotating speed of the motor is less than desired speed；
If the rotating speed of the motor is less than the desired speed, default constant-torque Return moment is made
For the constant Return moment；
If the rotating speed of the motor is more than or equal to the desired speed, according to default firm power meter
Firm power Return moment is calculated, and regard the firm power Return moment as the constant Return moment.
3. the energy feedback method of vehicle according to claim 1, it is characterised in that described according to institute
State constant Return moment, the maximum electric braking torque and the maximum charge torque and determine ceiling capacity feedback
Torque, including：By the constant Return moment, the maximum electric braking torque and the maximum charge torque
In minimum one be used as the ceiling capacity Return moment.
4. the energy feedback method of vehicle according to claim 1, it is characterised in that the energy is returned
Feedforward coefficient includes sliding energy feedback coefficient and braking energy feedback coefficient, wherein, the braking energy feedback
Coefficient be more than it is described slide feedback energy coefficient, the braking energy feedback coefficient and described slide feedback energy
Coefficient is equal) it is more than 0 and less than or equal to 1.
5. the energy feedback method of vehicle according to claim 4, it is characterised in that described in basis
Energy feedback coefficient and the ceiling capacity Return moment are obtained before final energy Return moment, in addition to：
Whether detection brake pedal is operated；
If the brake pedal is not operated, the cunning is obtained according to the rotating speed of speed and the motor
Row energy feedback coefficient；
If the brake pedal is operated, the braking is obtained according to the speed and brake pedal aperture
Energy feedback coefficient.
6. a kind of energy feedback system of vehicle, it is characterised in that the vehicle includes electrokinetic cell and motor,
The system includes：
Judge module, for judging whether vehicle meets energy feedback condition；
Ceiling capacity Return moment determining module, it is described for judging that the vehicle is met in the judge module
During energy feedback condition, constant Return moment is obtained according to the rotating speed of motor, and obtain corresponding to maximum braking
The maximum charge power of the maximum electric braking torque of acceleration limit value and the maximum charge power corresponding to electrokinetic cell
Square, and it is true according to the constant Return moment, the maximum electric braking torque and the maximum charge torque
Determine ceiling capacity Return moment, wherein, the constant Return moment is firm power Return moment or constant torsion
Square Return moment；
Control module, for obtaining final energy according to energy feedback coefficient and the ceiling capacity Return moment
Return moment, and control the motor to carry out regenerative braking according to the final energy Return moment.
7. the energy feedback system of vehicle according to claim 6, it is characterised in that the maximum energy
Amount Return moment determining module obtains constant Return moment according to the rotating speed of motor, including：
Judge whether the rotating speed of the motor is less than desired speed；If the rotating speed of the motor is less than described pre-
Determine rotating speed, then regard default constant-torque Return moment as the constant Return moment；
If the rotating speed of the motor is more than or equal to the desired speed, according to default firm power meter
Firm power Return moment is calculated, and regard the firm power Return moment as the constant Return moment.
8. the energy feedback system of vehicle according to claim 6, it is characterised in that the energy is returned
Feedforward coefficient includes sliding energy feedback coefficient and braking energy feedback coefficient, wherein, the braking energy feedback
Coefficient be more than it is described slide feedback energy coefficient, the braking energy feedback coefficient and described slide feedback energy
Coefficient is all higher than 0 and less than or equal to 1.
9. the energy feedback system of vehicle according to claim 8, it is characterised in that the control mould
Block is additionally operable to obtaining final energy Return moment according to energy feedback coefficient and the ceiling capacity Return moment
Before, whether detection brake pedal is operated, and when the brake pedal is not operated, according to speed
With the rotating speed of the motor obtain it is described slide energy feedback coefficient, and when the brake pedal is operated,
The braking energy feedback coefficient is obtained according to the speed and brake pedal aperture.
10. a kind of vehicle, including：The energy feedback system of vehicle according to claim any one of 6-9
System.
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| CN108725213A (en) * | 2018-07-23 | 2018-11-02 | 北京车和家信息技术有限公司 | The control method and device of energy feedback |
| CN108790945A (en) * | 2018-06-12 | 2018-11-13 | 北京新能源汽车股份有限公司 | A kind of electric vehicle single pedal brake control method, device, equipment and automobile |
| CN108790839A (en) * | 2018-06-20 | 2018-11-13 | 海马新能源汽车有限公司 | Energy recovery control method and energy regenerating control device |
| CN109484198A (en) * | 2018-12-19 | 2019-03-19 | 奇瑞汽车股份有限公司 | A kind of electric automobile energy recovery method |
| CN110696632A (en) * | 2019-10-08 | 2020-01-17 | 浙江吉利汽车研究院有限公司 | Automobile brake feedback method and device and vehicle |
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| CN111409466A (en) * | 2020-03-31 | 2020-07-14 | 潍柴动力股份有限公司 | Vehicle braking method and device, vehicle, electronic device and storage medium |
| CN111645527A (en) * | 2020-05-18 | 2020-09-11 | 摩登汽车有限公司 | Electric vehicle braking energy recovery control method |
| CN111775714A (en) * | 2020-07-31 | 2020-10-16 | 厦门金龙联合汽车工业有限公司 | Vehicle energy recovery control method based on braking comfort |
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| CN112428828A (en) * | 2019-08-26 | 2021-03-02 | 上海汽车集团股份有限公司 | Kinetic energy recovery method and system |
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| CN111645527B (en) * | 2020-05-18 | 2021-11-02 | 摩登汽车有限公司 | Electric vehicle braking energy recovery control method |
| CN111775714A (en) * | 2020-07-31 | 2020-10-16 | 厦门金龙联合汽车工业有限公司 | Vehicle energy recovery control method based on braking comfort |
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