CN107745639A - Energy feedback method, energy feedback system and vehicle - Google Patents
Energy feedback method, energy feedback system and vehicle Download PDFInfo
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- CN107745639A CN107745639A CN201710802179.6A CN201710802179A CN107745639A CN 107745639 A CN107745639 A CN 107745639A CN 201710802179 A CN201710802179 A CN 201710802179A CN 107745639 A CN107745639 A CN 107745639A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000001172 regenerating effect Effects 0.000 claims description 48
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000035126 Facies Diseases 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
- B60L7/18—Controlling the braking effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—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
- B60L2240/10—Vehicle control parameters
- B60L2240/14—Acceleration
- B60L2240/16—Acceleration longitudinal
-
- 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
- B60L2240/425—Temperature
-
- 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
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of energy feedback method, energy feedback system and vehicle, the energy feedback method includes：Whether detection vehicle's current condition meets feedback braking condition；When meeting the feedback braking condition, one feedback braking gear is selected according to speed, surface conditions and braking deceleration automatically from multiple feedback braking gears, wherein, the multiple feedback braking gear, which corresponds, feedback braking coefficient curve different from each other；First feedback braking coefficient is obtained according to feedback braking coefficient curve and speed corresponding to automatically selected feedback braking gear；First feedback braking torque is obtained according to braking moment and the first feedback braking coefficient；Energy feedback is carried out according to the first feedback braking torque.The invention has the advantages that：To greatest extent carry out energy feedback of the vehicle on the premise of driving stability can be made.
Description
Technical field
The present invention relates to technical field of vehicle, and in particular to a kind of energy feedback method, energy feedback system and vehicle.
Background technology
In today that new-energy automobile becomes increasingly popular, electric automobile develops ten due to the advantages that energy utilization is high, pollution is few
Divide rapid.But the limitation of battery technology is still such that continual mileage turns into the major obstacle of Development of Electric Vehicles.Energy feedback
System can be in vehicle sliding and deboost phase recovery section energy, thus can greatly improve the continual mileage and vehicle energy of vehicle
The utilization rate of amount.
Existing energy feedback technology is based on hybrid power and electric automobile, and when vehicle deceleration and braking, it moves energy
Amount is not to become heat energy by brakes, and is available with motor and is translated into power storage in battery, is used for
Drive vehicle traveling.The energy feedback system of vehicle does not carry out feedback braking according to driving operating mode at present, feedback braking be present
The shortcomings that efficiency is low low with vehicle run stability.
The content of the invention
It is contemplated that at least solves one of above-mentioned technical problem.
Therefore, first purpose of the present invention is to propose a kind of energy feedback method, the energy feedback method can make
To greatest extent carry out energy feedback of the vehicle on the premise of driving stability.
To achieve these goals, embodiment of the invention discloses that a kind of energy feedback method, comprises the following steps：Inspection
Survey whether vehicle's current condition meets feedback braking condition；When meeting the feedback braking condition, according to speed, surface conditions
A feedback braking gear is selected automatically from multiple feedback braking gears with braking deceleration, wherein, it is the multiple to brake back
Feedback gear, which corresponds, feedback braking coefficient curve different from each other；It is corresponding according to automatically selected feedback braking gear
Feedback braking coefficient curve and speed obtain the first feedback braking coefficient；According to braking moment and the first feedback braking system
Number obtains the first feedback braking torque；Energy feedback is carried out according to the first feedback braking torque.
Further, also include according to the first feedback braking torque progress energy feedback：From the multiple braking
A feedback braking gear is selected in feedback gear manually；According to feedback braking system corresponding to feedback braking gear selected manually
Number curve and speed obtain the second feedback braking coefficient；Second system is obtained according to braking moment and the second feedback braking coefficient
Dynamic Return moment；Energy feedback is carried out according to the second feedback braking torque.
Further, the feedback braking gear includes low regenerative braking gear, middle regenerative braking gear and high feedback system
Dynamic gear, under identical speed, feedback braking coefficient corresponding to the low regenerative braking gear≤middle regenerative braking gear
Feedback braking coefficient≤high regenerative braking gear feedback braking coefficient；When the vehicle descending is braked, institute
State control system and select high regenerative braking gear；When the braking deceleration of the vehicle is braked more than braking deceleration threshold value
When, regenerative braking gear during the control system is selected；When the vehicle, which is in city operating mode, to be braked, the control system
System selectes high regenerative braking gear.
Further, the feedback braking condition is：The temperature of electric system is less than motor temperature threshold value, battery system
Carrying capacity is less than carrying capacity threshold value and the temperature of the battery system is more than battery temperature threshold value.
Energy feedback method according to embodiments of the present invention, operating mode when being braked according to vehicle select corresponding feedback braking
Gear, and then feedback braking moment of torsion is obtained according to speed and carries out energy feedback, vehicle can be made on the premise of driving stability
Energy feedback is carried out to greatest extent.
Therefore, second object of the present invention is to propose a kind of energy feedback system, the energy feedback system can make
To greatest extent carry out energy feedback of the vehicle on the premise of driving stability.
To achieve these goals, embodiment of the invention discloses that a kind of energy feedback system, including：Detection module,
For detecting whether vehicle's current condition meets feedback braking condition；Speed information acquisition module, for obtaining speed information；System
Dynamic torque data obtaining module, for obtaining braking torque information；Information of road surface acquisition module, for obtaining surface conditions letter
Breath；Feedback braking gear chosen module, for when meeting the feedback braking condition, according to speed, surface conditions and braking
Deceleration selectes a feedback braking gear from multiple feedback braking gears, wherein, the multiple feedback braking gear is corresponding
Different feedback braking coefficient curves；Energy feedback module, the feedback braking torque for being sent according to control module carry out energy
Measure feedback；The control module, obtained for feedback braking coefficient curve and speed according to corresponding to selected feedback braking gear
The feedback braking power is obtained to the first feedback braking coefficient, and then according to the braking moment and the feedback braking coefficient
Square.
Further, the feedback braking gear chosen module includes the selected unit of multiple feedback braking gears, described more
Individual feedback braking gear selectes unit and corresponds setting with the multiple feedback braking gear, by being braked back from the multiple
Feedback gear, which is selected in unit, selects corresponding feedback braking gear.
Further, the feedback braking gear includes low regenerative braking gear, middle regenerative braking gear and high feedback system
Dynamic gear, under identical speed, feedback braking coefficient corresponding to the low regenerative braking gear≤middle regenerative braking gear
Feedback braking coefficient≤high regenerative braking gear feedback braking coefficient, the feedback braking gear chosen module enters one
Walk and be used for：When the vehicle descending is braked, the control system selectes high regenerative braking gear；When the system of the vehicle
When dynamic deceleration is braked more than braking deceleration threshold value, regenerative braking gear during the control system is selected；When the car
In city operating mode braked when, the control system selectes high regenerative braking gear.
Further, the feedback braking condition is：The temperature of electric system is less than motor temperature threshold value, battery system
Carrying capacity is less than carrying capacity threshold value and the temperature of the battery system is more than battery temperature threshold value.
Energy feedback system according to embodiments of the present invention, operating mode when being braked according to vehicle select corresponding feedback braking
Gear, and then feedback braking moment of torsion is obtained according to speed and carries out energy feedback, vehicle can be made on the premise of driving stability
Energy feedback is carried out to greatest extent.
Therefore, third object of the present invention is to propose a kind of vehicle, the vehicle can be on the premise of driving stability
Carry out energy feedback to greatest extent.
To achieve these goals, embodiment of the invention discloses that a kind of vehicle, it is provided with the energy of above-described embodiment
Feedback system.
The vehicle of the embodiment of the present invention and the energy feedback system of the embodiment of the present invention relative to prior art Dominant Facies
Together.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, 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 will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the energy feedback method of the embodiment of the present invention；
Fig. 2 is feedback braking coefficient corresponding to three energy feedback gears of energy feedback method of one embodiment of the invention
The schematic diagram of curve；
Fig. 3 is the structured flowchart of the energy feedback system of the embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
With reference to following description and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention.In these descriptions
In accompanying drawing, some particular implementations in embodiments of the invention are specifically disclosed, to represent to implement the implementation of the present invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, the present invention
Embodiment includes all changes, modification and the equivalent fallen into the range of the spirit and intension of attached claims.
The present invention is described below in conjunction with accompanying drawing.
Fig. 1 is the flow chart of the energy feedback method of the embodiment of the present invention.As shown in figure 1, the energy of the embodiment of the present invention
Feedback method, comprise the following steps：
S1：Whether detection vehicle's current condition meets feedback braking condition.
In one embodiment of the invention, feedback braking condition is：The temperature of electric system be less than motor temperature threshold value,
The carrying capacity of battery system is less than carrying capacity threshold value and the temperature of battery system is more than battery temperature threshold value.
Vehicle travel process motor temperature is stable to be risen, and motor temperature can be raised further after energy feedback, when motor temperature
Degree, which exceedes motor temperature threshold value, to be impacted to motor performance, therefore judges whether motor temperature exceedes motor before feedback braking
Temperature threshold.Wherein, motor temperature threshold value according to motor maximum operating temperature and is expected with the temperature lifted after feedback braking
Difference.
When the carrying capacity of battery system is more than carrying capacity threshold value (such as 80%), now still carrying out energy feedback can then lead
Send a telegraph cell system and produce polarization phenomena, influence battery capacity and cycle life.Therefore the charged of battery system is judged before feedback braking
Whether amount is less than carrying capacity threshold value
When battery system temperature is less than battery temperature threshold value, the electric current of energy feedback can cause the crystallization of negative terminal surface,
Crystallization is accumulative to cause both positive and negative polarity short-circuit, therefore judges whether battery system temperature is more than battery temperature threshold value before feedback braking.
S2：When meeting feedback braking condition, according to speed, surface conditions and braking deceleration from multiple feedback braking shelves
Automatically a feedback braking gear is selected in position, wherein, multiple feedback braking gears, which correspond, system different from each other
Dynamic feedback coefficient curve.
Fig. 2 is feedback braking coefficient corresponding to three energy feedback gears of energy feedback method of one embodiment of the invention
The schematic diagram of curve.In one embodiment of the invention, feedback braking gear includes low regenerative braking gear, middle regenerative braking
Gear and high regenerative braking gear, under identical speed, feedback braking coefficient≤middle feedback system corresponding to low regenerative braking gear
The feedback braking coefficient of feedback braking coefficient≤high regenerative braking gear of dynamic gear.
When vehicle descending is braked, because the demand to brake force is smaller, control system selectes high regenerative braking shelves
Position, feedback braking efficiency of deducting a percentage；
When the braking deceleration of vehicle is more than braking deceleration threshold value (such as 2m/s2) when being braked, control system choosing
Regenerative braking gear in fixed；
When vehicle, which is in city operating mode, to be braked, control system selectes high regenerative braking gear.Wherein, whether vehicle
It can be determined in city operating mode by internet and alignment system.Network data shows that the energy of braking consumption accounts for driving total energy
More than half of amount, and speed concentrates on 15 between 50km/h, thus select can high regenerative braking gear at utmost
Carry out energy feedback.
In addition, when speed is relatively low (such as less than speed is less than 15km/h), braking energy is small, and feedback braking is small, now
Braking energy feedback can not be started.In vehicle driving up, to ensure driving dynamics and stability, even if detecting brake pedal
Signal can also be without braking energy feedback.In highway driving, to ensure driving dynamics and stability, without system
Energy feedback.
S3：First braking is obtained according to feedback braking coefficient curve and speed corresponding to automatically selected feedback braking gear
Feedback coefficient.It was found from from such as Fig. 2, it is elected determine feedback braking gear after, can obtain the according to feedback braking gear and speed
One feedback braking coefficient.
S4：First feedback braking torque, i.e. the first feedback braking are obtained according to braking moment and the first feedback braking coefficient
Torque=braking moment * the first feedback braking coefficients.
S5：Energy feedback is carried out according to the first feedback braking torque.
In one embodiment of the invention, also include after step s 5：Selected manually from multiple feedback braking gears
A fixed feedback braking gear；Second is obtained according to feedback braking coefficient curve and speed corresponding to selected feedback braking gear
Feedback braking coefficient；Second feedback braking torque is obtained according to braking moment and the second feedback braking coefficient；According to the second braking
Return moment carries out energy feedback.
Specifically, after step S5 carries out energy feedback, driver adjusts feedback braking gear, system according to demands of individuals
Energy feedback is carried out according to the feedback braking gear after adjustment.
Energy feedback method according to embodiments of the present invention, operating mode when being braked according to vehicle select corresponding feedback braking
Gear, and then feedback braking moment of torsion is obtained according to speed and carries out energy feedback, vehicle can be made on the premise of driving stability
Energy feedback is carried out to greatest extent.
Fig. 3 is the structured flowchart of the energy feedback system of the embodiment of the present invention.As shown in figure 3, the energy of the embodiment of the present invention
Feedback system is measured, including：Detection module 310, speed information acquisition module 320, braking torque data obtaining module 330, road surface
Data obtaining module 340, feedback braking gear chosen module 350, energy feedback module 360 and control module 370.
Wherein, detection module 310 is used to detect whether vehicle's current condition meets feedback braking condition.Speed information obtains
Module 320 is used to obtain speed information.Braking torque data obtaining module 330 is used to obtain braking torque information.Information of road surface
Acquisition module 340 is used to obtain surface conditions information.Feedback braking gear chosen module 350, which is used to work as, meets the feedback braking
During condition, a feedback braking gear is selected from multiple feedback braking gears according to speed, surface conditions and braking deceleration,
Wherein, multiple feedback braking gears correspond to different feedback braking coefficient curves.Energy feedback module 360 is used for according to control mould
The feedback braking torque that block 370 is sent carries out energy feedback.Control module 370 is used for corresponding according to selected feedback braking gear
Feedback braking coefficient curve and speed obtain the first feedback braking coefficient, and then obtained according to braking moment and feedback braking coefficient
To feedback braking torque.
Energy feedback system according to embodiments of the present invention, operating mode when being braked according to vehicle select corresponding feedback braking
Gear, and then feedback braking moment of torsion is obtained according to speed and carries out energy feedback, vehicle can be made on the premise of driving stability
Energy feedback is carried out to greatest extent.
In one embodiment of the invention, feedback braking gear chosen module 350 is selected including multiple feedback braking gears
Order member, multiple feedback braking gears, which are selected unit and multiple feedback braking gears and corresponded, to be set, by from multiple brakings
Feedback gear is selected in unit and selects corresponding feedback braking gear.
In one embodiment of the invention, feedback braking gear includes low regenerative braking gear, middle regenerative braking gear
With high regenerative braking gear, under identical speed, feedback braking coefficient≤middle regenerative braking shelves corresponding to low regenerative braking gear
The feedback braking coefficient of feedback braking coefficient≤high regenerative braking gear of position, feedback braking gear chosen module 350 are further
For：When vehicle descending is braked, control system selectes high regenerative braking gear；When the braking deceleration of vehicle is more than system
When dynamic deceleration threshold is braked, regenerative braking gear during control system is selected；Braked when vehicle is in city operating mode
When, control system selectes high regenerative braking gear.
In one embodiment of the invention, feedback braking condition is：The temperature of electric system be less than motor temperature threshold value,
The carrying capacity of battery system is less than carrying capacity threshold value and the temperature of battery system is more than battery temperature threshold value.
It should be noted that the embodiment and the embodiment of the present invention of the energy feedback system of the embodiment of the present invention
The embodiment of energy feedback method is similar, referring specifically to the description of method part, in order to reduce redundancy, does not repeat.
In addition, the invention also discloses a kind of vehicle, the vehicle is provided with the energy feedback system of above-described embodiment.The car
Carry out energy feedback to greatest extent that can be on the premise of driving stability.
In addition, other compositions of the vehicle of the embodiment of the present invention and effect are all for a person skilled in the art
It is known, in order to reduce redundancy, do not repeat.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is by claim and its equivalent limits.
Claims (9)
1. a kind of energy feedback method, it is characterised in that comprise the following steps：
Whether detection vehicle's current condition meets feedback braking condition；
When meeting the feedback braking condition, according to speed, surface conditions and braking deceleration from multiple feedback braking gears
In select a feedback braking gear automatically, wherein, the multiple feedback braking gear correspond have it is different from each other
Feedback braking coefficient curve；
First feedback braking system is obtained according to feedback braking coefficient curve and speed corresponding to automatically selected feedback braking gear
Number；
First feedback braking torque is obtained according to braking moment and the first feedback braking coefficient；
Energy feedback is carried out according to the first feedback braking torque.
2. energy feedback method according to claim 1, it is characterised in that enter according to the first feedback braking torque
Row energy feedback also includes：
Select a feedback braking gear manually from the multiple feedback braking gear；
Second feedback braking system is obtained according to feedback braking coefficient curve and speed corresponding to feedback braking gear selected manually
Number；
Second feedback braking torque is obtained according to braking moment and the second feedback braking coefficient；
Energy feedback is carried out according to the second feedback braking torque.
3. energy feedback method according to claim 1 or 2, it is characterised in that the feedback braking gear includes low time
Brake range, middle regenerative braking gear and high regenerative braking gear are presented, under identical speed, the low regenerative braking gear is corresponding
Feedback braking coefficient≤middle regenerative braking gear feedback braking coefficient≤high regenerative braking gear braking return
Feedforward coefficient；
When the vehicle descending is braked, the control system selectes high regenerative braking gear；
When the braking deceleration of the vehicle is braked more than braking deceleration threshold value, feedback during the control system is selected
Brake range；
When the vehicle, which is in city operating mode, to be braked, the control system selectes high regenerative braking gear.
4. energy feedback method according to claim 1, it is characterised in that the feedback braking condition is：Electric system
Temperature be less than motor temperature threshold value, the carrying capacity of battery system is less than the temperature of carrying capacity threshold value and the battery system and is more than
Battery temperature threshold value.
A kind of 5. energy feedback system, it is characterised in that including：
Detection module (310), for detecting whether vehicle's current condition meets feedback braking condition；
Speed information acquisition module (320), for obtaining speed information；
Braking torque data obtaining module (330), for obtaining braking torque information；
Information of road surface acquisition module (340), for obtaining surface conditions information；
Feedback braking gear chosen module (350), for when meeting the feedback braking condition, according to speed, surface conditions
A feedback braking gear is selected from multiple feedback braking gears with braking deceleration, wherein, the multiple feedback braking shelves
The corresponding different feedback braking coefficient curve in position；
Energy feedback module (360), the feedback braking torque for being sent according to control module (370) carry out energy feedback；
The control module (370), for feedback braking coefficient curve and speed according to corresponding to selected feedback braking gear
The first feedback braking coefficient is obtained, and then the feedback braking power is obtained according to the braking moment and the feedback braking coefficient
Square.
6. energy feedback system according to claim 5, it is characterised in that the feedback braking gear chosen module
(350) include multiple feedback braking gears and select unit, the multiple feedback braking gear selectes unit and the multiple braking
Feedback gear, which corresponds, to be set, and corresponding feedback braking shelves are selected by being selected from the multiple feedback braking gear in unit
Position.
7. energy feedback system according to claim 5, it is characterised in that the multiple feedback braking gear includes low time
Brake range, middle regenerative braking gear and high regenerative braking gear are presented, under identical speed, the low regenerative braking gear is corresponding
Feedback braking coefficient≤middle regenerative braking gear feedback braking coefficient≤high regenerative braking gear braking return
Feedforward coefficient, the feedback braking gear chosen module (350) are further used for：
When the vehicle descending is braked, the control system selectes high regenerative braking gear；
When the braking deceleration of the vehicle is braked more than braking deceleration threshold value, feedback during the control system is selected
Brake range；
When the vehicle, which is in city operating mode, to be braked, the control system selectes high regenerative braking gear.
8. energy feedback system according to claim 6, it is characterised in that the feedback braking condition is：Electric system
Temperature be less than motor temperature threshold value, the carrying capacity of battery system is less than the temperature of carrying capacity threshold value and the battery system and is more than
Battery temperature threshold value.
9. a kind of vehicle, it is characterised in that be provided with the energy feedback system described in claim any one of 5-8.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN109795328A (en) * | 2019-03-04 | 2019-05-24 | 重庆先锋渝州电器有限公司 | The electric hybrid vehicle of oil and its energy back-feed control method with energy feedback function |
| CN110816516A (en) * | 2019-11-06 | 2020-02-21 | 航天重型工程装备有限公司 | Method and device for controlling speed of mine vehicle |
| CN111169472A (en) * | 2018-11-13 | 2020-05-19 | 河南森源重工有限公司 | Vehicle active safety control method and device and vehicle |
| CN113815423A (en) * | 2021-09-30 | 2021-12-21 | 华人运通(江苏)技术有限公司 | Energy feedback control method and device of electric automobile and vehicle |
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