CN109591605A - A kind of parallel Brake energy recovery control method of pure electric automobile and system - Google Patents
A kind of parallel Brake energy recovery control method of pure electric automobile and system Download PDFInfo
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- CN109591605A CN109591605A CN201811610381.XA CN201811610381A CN109591605A CN 109591605 A CN109591605 A CN 109591605A CN 201811610381 A CN201811610381 A CN 201811610381A CN 109591605 A CN109591605 A CN 109591605A
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- electric automobile
- pure electric
- torque
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- brake
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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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
- B60L7/26—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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/28—Eddy-current 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
- B60L2240/40—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
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
Abstract
The present invention relates to Energy Recovery for Electric Vehicle fields, disclose a kind of parallel Brake energy recovery control method of pure electric automobile, motor output feedback torque and control current vortex retarder output torque applied to control pure electric automobile, when meeting predefined energy regenerating condition including the operating parameter when pure electric automobile, the current brake state of pure electric automobile is established；Feedback torque is obtained according to current brake state；Export feedback torque；When operating parameter is unsatisfactory for predefined energy regenerating condition, target torque is exported by current vortex retarder；Also disclose a kind of parallel Brake energy recovery control system of pure electric automobile；The safety of vehicle braking is improved by control current vortex retarder output torque combination mechanical braking when electric car exits energy regenerating, while accurate control is carried out to guarantee comfort to feedback torque.
Description
Technical field
The present invention relates to Energy Recovery for Electric Vehicle fields, specifically design a kind of parallel Brake Energy of pure electric automobile
Measure recycling and control method and system.
Background technique
Energy recycling system refers to the excess energy released in electric vehicle brake or coast, and passes through power generation
Machine is translated into electric energy, then is stored in battery, for giving it the gun later.This battery can be also interior power consumption
Equipment power supply, reduces to the dependence of engine, engine consumption and CO2 emission.
Judging have a condition for the SOC value of power battery when electric car feedback in the prior art, the SOC value is
It is estimated according to the monomer voltage of acquisition and electric current, there are errors for this mode, the current of reaction power battery cannot fill completely
Electricity condition；It needs to demarcate under different operating conditions during electric automobile during traveling and brakes recoverable MAP chart, this mode demarcates content
It is more, low efficiency；In addition, when Brake Energy recycles ineligible exit, due to reducing electric braking torque, vehicle in brake force
Mechanical braking is just only existed, driver can get the wrong sow by the ear to the dynamics of brake because being not suitable with the brake force of unexpected reduction, from
And increase or shorten braking distance, there are serious security risks, and reduce the comfort of driving.
Summary of the invention
The object of the present invention is to provide a kind of parallel Brake energy recovery control method of pure electric automobile and system, to
Electric car is solved to lack security risk caused by electric braking torque when exiting Brake energy recovery and export torsion in feedback
The accuracy of square.
The technical solution used to solve the technical problems of the present invention is that on the one hand proposing a kind of parallel system of pure electric automobile
Energy recycling and control method, the method are applied to the motor output feedback torque of control pure electric automobile and control electric whirlpool
Retarder output torque is flowed, includes the following steps: that the operating parameter of the pure electric automobile meets predefined energy regenerating item
When part, the current brake state of the pure electric automobile is established；Feedback torque is obtained according to current brake state；To the motor
Export the feedback torque.
It is further preferred that " the predefined energy regenerating condition " include complete vehicle fault grade be less than exit
Grade；Controller temperature, which is less than, exits temperature；Motor speed, which is greater than, exits revolving speed；Monomer ceiling voltage, which is less than, exits voltage；It is antilock
Dead system ABS is in off working state；The maximum allowable peak value charge power of electrokinetic cell system is greater than 0；Current gear is being advanced
Shelves；Brake pedal steps on rate greater than normal brake application rate value；The operating parameter of the pure electric automobile meets in above-mentioned condition
It is one or more, the current brake state of the pure electric automobile can be established.
It is further preferred that the method also includes the operating parameters when the pure electric automobile to be unsatisfactory for predefined energy
When measuring recycling condition, target torque is exported by controller of current vortex retarder control current vortex retarder.
It is further preferred that described " the current brake state for establishing the pure electric automobile " specific step is as follows: monitoring
Brake pedal of pure electric automobile depth enters on-position if depth is greater than 0；It is monitored if brake pedal depth remains unchanged
Whether pure electric automobile is in sliding state.
It is further preferred that " whether monitoring pure electric automobile is in sliding state " is specially that monitoring accelerator pedal is deep
Degree enters sliding state if depth remains unchanged, if depth changes, pure electric automobile is in driving status, is not necessarily to energy
Amount recycling.
It is further preferred that described obtain feedback torque according to current brake state specifically: if the current operation shape of prompt
State is on-position, then obtains demand feedback torque by brake pedal depth, and calculate final feedback by the first preset rules
Torque.
It is further preferred that the first described preset rules be specially the demand feedback torque, motor currently most
The size of big driving torque limit value and the maximum allowable peak power of electrokinetic cell system, takes three's minimum value multiplied by energy feedback
Coefficient exports end value.
It is further preferred that described obtain feedback torque according to current brake state further include: if the current operation shape of prompt
State is sliding state, then enters the accelerator pedal depth unclamped before sliding state by pure electric automobile and obtain and slide feedback torque；
It slides feedback torque by described and acquires final feedback torque by second of preset rules.
It is further preferred that second of preset rules are specifically by by described, to slide feedback torque current with motor
The maximum allowable peak torque of maximum drive torque limit value, electrokinetic cell system is relatively minimized；The minimum value is carried out defeated
Out.
On the other hand propose that a kind of parallel Brake energy recovery control system of pure electric automobile, the system are applied to control
The motor output feedback torque and control current vortex retarder output torque of pure electric automobile processed, include judgment module, use
In judging whether the operating parameter of the pure electric automobile meets predefined energy regenerating condition；First processing module is used for
Feedback torque is obtained according to current brake state；Second processing module, it is slow for controller of current vortex retarder control current vortex
Fast device exports target torque；Sending module, for exporting the feedback torque in the first processing module to motor.
Beneficial effects of the present invention: pass through control current vortex retarder output torque when electric car exits energy regenerating
The safety of vehicle braking is improved in conjunction with mechanical braking, while accurate control is carried out to guarantee comfort to feedback torque.
Detailed description of the invention
Fig. 1 is a kind of step process of the parallel Brake energy recovery control method of pure electric automobile of the embodiment of the present invention
Figure；
Fig. 2 is predefined recycling item in a kind of parallel Brake energy recovery control method of pure electric automobile of the embodiment of the present invention
The flow chart of part；
Fig. 3 is in a kind of parallel Brake energy recovery control method of pure electric automobile of the embodiment of the present invention according to on-position
Obtain the flow chart of feedback torque；
Fig. 4 is a kind of structural schematic diagram of the parallel Brake energy recovery control system of pure electric automobile of the embodiment of the present invention.
Specific embodiment
In order to illustrate the embodiments of the present invention more clearly with technical solution in the prior art, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident 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, and obtain other embodiments, the present invention is not restricted to the embodiment.
The step flow chart of the parallel Brake energy recovery control method of pure electric automobile as shown in Figure 1, the method
Applied to the motor output feedback torque and control current vortex retarder output torque of control pure electric automobile, the method packet
Include following steps: for S1 when the operating parameter of the pure electric automobile meets predefined energy regenerating condition, establishment is described pure
The current brake state of electric car；S2 obtains feedback torque according to current brake state；S3 is returned to motor output is described
Present torque；S4 is when the operating parameter of the pure electric automobile is unsatisfactory for predefined energy regenerating condition, by electric vortex buffering
Device controller controls current vortex retarder and exports target torque.
This embodiment can be corresponding according to current brake state output in the case where entering energy recovery state in pure electric automobile
Feedback torque, can be matched with mechanical torque by current vortex retarder output in the case where exiting energy recovery state makes driver more
Add comfortable target torque；Cooperated by mechanical braking and electric braking so that driver is more safe and easypro in the process of moving
It is suitable.
Please refer to Fig. 2." the predefined energy regenerating condition " includes:
S11 complete vehicle fault grade, which is less than, exits grade；
S12 controller temperature, which is less than, exits temperature；
S13 motor speed, which is greater than, exits revolving speed；
S14 monomer ceiling voltage, which is less than, exits voltage；
S15 anti-lock braking system ABS is in off working state；
The maximum allowable peak value charge power of S16 electrokinetic cell system is greater than 0；
S17 current gear is in drive shift；
S18 brake pedal steps on rate greater than normal brake application rate value；
The operating parameter of the pure electric automobile meets one or more in S11-S18 condition, can establish the pure electric vehicle vapour
The current brake state of vehicle.
This embodiment with generally judge that the SOC value of power battery is different, general SOC value is the battery packing list according to acquisition
Bulk voltage and electric current carry out estimation acquisition, and there are errors, cannot reflect the present charge state of power battery completely；Consolidate method
It is middle to use the monomer voltage for judging power battery and maximum allowable charge power as one of predefined energy regenerating condition, it is quasi-
Truly have effect；Fault level, controller control temperature, motor speed and brake pedal are additionally judged according to vehicle mounts addition
Rate is stepped on, with more accurate to energy recovery state is judged；Judging whether anti-lock braking system works can be by driving with current gear
The person of sailing intuitively obtains and operates.
In this embodiment when pure electric automobile exits energy recovery state, switch to controller of current vortex retarder root in time
The MAP chart control current vortex retarder formulated according to electric braking torque exports target torque.
" the current brake state for establishing the pure electric automobile " described in this embodiment specific step is as follows: monitoring pure electricity
Electrical automobile brake pedal depth enters on-position if depth is greater than 0；Pure electricity is monitored if brake pedal depth remains unchanged
Whether electrical automobile is in sliding state, specially if depth remains unchanged enter sliding state, if depth change it is pure
Electric car is in driving status, is not necessarily to energy regenerating.
Braking of battery electric vehicle state is divided into on-position and descending sliding mode, deep according to set pedal and current pedal
Degree determines current braking of battery electric vehicle state.
Please refer to Fig. 3.The S2 obtains feedback torque according to current brake state specifically: if the current operation of S21 prompt
State is on-position, then obtains demand feedback torque by brake pedal depth, and calculate final return by the first preset rules
Present torque；
If it is sliding state that S22, which prompts current operating conditions, the acceleration unclamped before sliding state is entered by pure electric automobile and is stepped on
Plate depth, which obtains, slides feedback torque；It slides feedback torque by described and acquires final feedback torque by second of preset rules.
The first described preset rules are specially the demand feedback torque, the current maximum drive torque limit value of motor
With the size of the maximum allowable peak power of electrokinetic cell system, take three's minimum value multiplied by energy feedback coefficient, by end value
It is exported.
Second of preset rules slide feedback torque and the current maximum drive torque of motor specifically by by described
The maximum allowable peak torque of limit value, electrokinetic cell system is relatively minimized；The minimum value is exported.
The feedback of sliding exported under the feedback braking or sliding mode that export under above-mentioned on-position is final output
Feedback torque.
The structural schematic diagram of the parallel Brake energy recovery control system of pure electric automobile as shown in Figure 4, the system
Applied to the motor output feedback torque and control current vortex retarder output torque of control pure electric automobile, specifically include:
Judgment module, for judging whether the operating parameter of the pure electric automobile meets predefined energy regenerating condition；
First processing module, for obtaining feedback torque according to current brake state；
Second processing module exports target torque for controller of current vortex retarder control current vortex retarder；
Sending module, for exporting the feedback torque in the first processing module to motor.
Specific embodiments of the present invention are described in detail above.It should be appreciated that those skilled in the art are without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all those skilled in the art
Present inventive concept passes through the available technical solution of logical analysis, reasoning, or a limited experiment in the prior art, all
It should be in protection scope determined by the claims.
Claims (10)
1. a kind of parallel Brake energy recovery control method of pure electric automobile, which is characterized in that the method is applied to control
The motor output feedback torque and control current vortex retarder output torque of pure electric automobile, the method includes walking as follows
Rapid: S1 establishes the pure electric automobile when the operating parameter of the pure electric automobile meets predefined energy regenerating condition
Current brake state；S2 obtains feedback torque according to current brake state；S3 exports the feedback torque to the motor.
2. the parallel Brake energy recovery control method of pure electric automobile according to claim 1, which is characterized in that described
" predefined energy regenerating condition " includes:
S11 complete vehicle fault grade, which is less than, exits grade；
S12 controller temperature, which is less than, exits temperature；
S13 motor speed, which is greater than, exits revolving speed；
S14 monomer ceiling voltage, which is less than, exits voltage；
S15 anti-lock braking system ABS is in off working state；
The maximum allowable peak value charge power of S16 electrokinetic cell system is greater than 0；
S17 current gear is in drive shift；
S18 brake pedal steps on rate greater than normal brake application rate value；
The operating parameter of the pure electric automobile meets one or more in S11-S18 condition, can establish the pure electric vehicle vapour
The current brake state of vehicle.
3. the parallel Brake energy recovery control method of pure electric automobile according to claim 1, which is characterized in that also wrap
Include step: S4 is when the operating parameter of the pure electric automobile is unsatisfactory for predefined energy regenerating condition, by electric vortex buffering
Device controller controls current vortex retarder and exports target torque.
4. the parallel Brake energy recovery control method of pure electric automobile according to claim 1, which is characterized in that described
" the current brake state for establishing the pure electric automobile " specific step is as follows: monitoring brake pedal of pure electric automobile depth, if
Depth is greater than 0 and enters on-position；Pure electric automobile is monitored if brake pedal depth remains unchanged whether be in slide shape
State.
5. the parallel Brake energy recovery control method of pure electric automobile according to claim 4, which is characterized in that described
" whether monitoring pure electric automobile is in sliding state " is specially monitoring accelerator pedal depth, enters if depth remains unchanged and slides
Row state, pure electric automobile is in driving status if depth changes, and is not necessarily to energy regenerating.
6. according to claim 1 with the parallel Brake energy recovery control method of pure electric automobile described in 4, which is characterized in that
The S2 obtains feedback torque according to current brake state specifically: if S21 prompt current operating conditions are on-position, by
Brake pedal depth obtains demand feedback torque, and calculates final feedback torque by the first preset rules.
7. the parallel Brake energy recovery control method of pure electric automobile according to claim 6, which is characterized in that described
The first preset rules is specially the demand feedback torque, the current maximum drive torque limit value of motor and power battery system
It unites the size of maximum allowable peak power, takes three's minimum value multiplied by energy feedback coefficient, end value is exported.
8. according to claim 1 with the parallel Brake energy recovery control method of pure electric automobile described in 4, which is characterized in that
The S2 obtains feedback torque according to current brake state further include: if S22 prompt current operating conditions are sliding state, by
Pure electric automobile, which enters the accelerator pedal depth unclamped before sliding state and obtains, slides feedback torque；Feedback torque is slided by described
Final feedback torque is acquired by second of preset rules.
9. the parallel Brake energy recovery control method of pure electric automobile according to claim 8, which is characterized in that described
Second of preset rules slides feedback torque and the current maximum drive torque limit value of motor, power battery specifically by by described
The maximum allowable peak torque of system is relatively minimized；The minimum value is exported.
10. a kind of parallel Brake energy recovery control system of pure electric automobile, which is characterized in that the system is applied to control
The motor output feedback torque and control current vortex retarder output torque of pure electric automobile, specifically include judgment module, use
In judging whether the operating parameter of the pure electric automobile meets predefined energy regenerating condition；First processing module is used for
Feedback torque is obtained according to current brake state；Second processing module, it is slow for controller of current vortex retarder control current vortex
Fast device exports target torque；Sending module, for exporting the feedback torque in the first processing module to motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610381.XA CN109591605A (en) | 2018-12-27 | 2018-12-27 | A kind of parallel Brake energy recovery control method of pure electric automobile and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610381.XA CN109591605A (en) | 2018-12-27 | 2018-12-27 | A kind of parallel Brake energy recovery control method of pure electric automobile and system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674263A (en) * | 2020-06-01 | 2020-09-18 | 浙江吉利新能源商用车集团有限公司 | Auxiliary braking method and system for vehicle |
| CN111791711A (en) * | 2019-09-24 | 2020-10-20 | 长城汽车股份有限公司 | Energy recovery control method and device, controller and electric automobile |
| CN112248817A (en) * | 2020-10-30 | 2021-01-22 | 宝能(广州)汽车研究院有限公司 | Electric vehicle, energy recovery control system, stability control method, and medium therefor |
| CN112693464A (en) * | 2020-12-31 | 2021-04-23 | 大运汽车股份有限公司 | Braking energy feedback control method suitable for new energy commercial vehicle |
| CN112977072A (en) * | 2019-12-13 | 2021-06-18 | 长城汽车股份有限公司 | Control method and device of new energy vehicle and new energy vehicle |
| CN113415167A (en) * | 2021-07-30 | 2021-09-21 | 重庆电子工程职业学院 | Energy recovery system and method for hybrid electric vehicle |
| CN113525101A (en) * | 2021-07-29 | 2021-10-22 | 中通客车股份有限公司 | Pure electric passenger car retarding system and control method thereof |
| CN113799614A (en) * | 2021-09-13 | 2021-12-17 | 的卢技术有限公司 | Braking energy recovery control method and system for four-wheel independent drive electric vehicle |
| CN113879343A (en) * | 2021-10-29 | 2022-01-04 | 江苏埃驱奥新能源科技有限公司 | Foot brake control method, device, equipment and medium for pure electric tractor |
| CN114179623A (en) * | 2020-09-15 | 2022-03-15 | 郑州宇通客车股份有限公司 | Vehicle electric braking method and system |
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| CN112693464A (en) * | 2020-12-31 | 2021-04-23 | 大运汽车股份有限公司 | Braking energy feedback control method suitable for new energy commercial vehicle |
| CN113525101A (en) * | 2021-07-29 | 2021-10-22 | 中通客车股份有限公司 | Pure electric passenger car retarding system and control method thereof |
| CN113415167A (en) * | 2021-07-30 | 2021-09-21 | 重庆电子工程职业学院 | Energy recovery system and method for hybrid electric vehicle |
| CN113799614A (en) * | 2021-09-13 | 2021-12-17 | 的卢技术有限公司 | Braking energy recovery control method and system for four-wheel independent drive electric vehicle |
| CN113879343A (en) * | 2021-10-29 | 2022-01-04 | 江苏埃驱奥新能源科技有限公司 | Foot brake control method, device, equipment and medium for pure electric tractor |
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