CN108382267A - The motor output control method of electric vehicle - Google Patents
The motor output control method of electric vehicle Download PDFInfo
- Publication number
- CN108382267A CN108382267A CN201810033630.7A CN201810033630A CN108382267A CN 108382267 A CN108382267 A CN 108382267A CN 201810033630 A CN201810033630 A CN 201810033630A CN 108382267 A CN108382267 A CN 108382267A
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- Prior art keywords
- electric vehicle
- speed
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- state
- controller
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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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/12—Bikes
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/46—Vehicles with auxiliary ad-on propulsions, e.g. add-on electric motor kits for bicycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- 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
- B60L2240/60—Navigation input
- B60L2240/64—Road conditions
- B60L2240/642—Slope of road
-
- 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
Landscapes
- 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 motor output control methods of electric vehicle, the number N of testing of electric motors Hall in predetermined time period, judge running state of electric motor car by the changes delta N of testing of electric motors Hall number, handle state, braking state and controller running current, wherein:Handle is in maximum rating, and Δ N=0, when controller operates in nominal current, electric vehicle is in level road operating status;Handle is in maximum rating, Δ N < 0, and controller operates in maximum current, and electric vehicle is in upward slope state;Handle is 0, Δ N > 0, and controller operates in low current, and electric vehicle is in descending state;According to the operating status of above-mentioned electric vehicle, the motor speed of electric vehicle is adjusted.By the above-mentioned means, the motor output control method of electric vehicle of the present invention, can judge that motor power exports, user experience is good automatically according to the operation of road conditions and driver.
Description
Technical field
The present invention relates to electric vehicle control fields, more particularly to a kind of motor output control method of electric vehicle.
Background technology
Prior art motor power output is artificially controlled by handle completely, and power maximum value is also to be fixed to limit by controller
's.Can not also it change when encountering power demand and increasing.The rotating speed of motor is also that controller fixes limitation, it is desirable to velocity variations
It must manual operation shift button progress acceleration-deceleration.It must remain whole by mechanical brake when vehicle is in descending state
Vehicle speed is too fast, causes the abrasion and fever of descending energy loss and mechanical brake.
Invention content
The invention mainly solves the technical problem of providing a kind of motor output control methods of electric vehicle, being capable of automatic root
Judge that motor power exports according to the operation of road conditions and driver, user experience is good.
In order to solve the above technical problems, one aspect of the present invention is:It is defeated to provide a kind of motor of electric vehicle
Discharge control method, the number N of testing of electric motors Hall in predetermined time period, by the changes delta N of testing of electric motors Hall number,
Handle state, braking state and controller running current judge running state of electric motor car, wherein:Handle is in maximum rating,
Δ N=0, when controller operates in nominal current, electric vehicle is in level road operating status;Handle is in maximum rating, Δ N < 0,
Controller operates in maximum current, and electric vehicle is in upward slope state;Handle is 0, and Δ N > 0, controller operates in low current, electricity
Motor-car is in descending state;According to the operating status of above-mentioned electric vehicle, the motor speed of electric vehicle is adjusted.
In a preferred embodiment of the present invention, when the electric vehicle is in level road state, when controller detects handle
Go to that maximum remains unchanged while electric vehicle has forward driving forces, into acceleration mode, motor speed increases, electric vehicle speed
The linear increment in fixed time period;When the voltage value that electric vehicle brake, handle unclamp or battery uses voltage to be less than setting
When, controller control limitation is begun to decline, and electric vehicle exits acceleration mode.
In a preferred embodiment of the present invention, the electric vehicle speed switches to 110% in 10S by 100% speed
Speed, and speed is linearly incremented by;When electric vehicle brake, handle release or battery are less than battery rated voltage using voltage
95%, motor stops increasing rotating speed, and electric vehicle exits acceleration mode.
In a preferred embodiment of the present invention, the electric vehicle running current is linearly increasing, goes up a slope when electric vehicle is in
When state, electric vehicle electric current is in that the electronic vehicle speed of maximum value does not increase while motor is in locked rotor condition, and controller enters electricity
Limiting value enlarging state is flowed, it is automatic to increase motor power output;When the reduction of electric vehicle running current value or electric vehicle speed are permanent
It is continued growing after fixed, controller exits current limit value enlarging state.
In a preferred embodiment of the present invention, when electric vehicle, which is in descending state-driven power, to be exited, controller intervention,
Backup current motor rotating speed, speed are intervened higher than the rotating speed of backup, then torque.After torque intervention, the variation of real-time judge speed,
Electric vehicle accelerates, and torque becomes larger, and electric vehicle slows down, and torque becomes smaller, and electric vehicle is made to stablize the velocity amplitude in backup;When electric vehicle into
Row brake plus handle, controller exit intervention.
It is in a preferred embodiment of the present invention, automatic to increase reverse charge electric current when the electric vehicle is in descending state,
Inhibit the speed of descending, the automatic charging in descending.
In a preferred embodiment of the present invention, the Δ N be same time in by motor Hall number N1,
In N2, N3 ... Nn, the numerical difference of posterior Hall number and previous Hall number.
The beneficial effects of the invention are as follows:The motor output control method of electric vehicle of the present invention, can automatically according to road conditions and
The operation of driver is good to judge motor power output, user experience.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, wherein:
Fig. 1 is that the road conditions of one preferred embodiment of motor output control method of electric vehicle of the present invention judge flow diagram;
Fig. 2 is that the road conditions of one preferred embodiment of motor output control method of electric vehicle of the present invention judge flow diagram;
Fig. 3 is that the road conditions of one preferred embodiment of motor output control method of electric vehicle of the present invention judge flow diagram;
Fig. 4 is the operational process schematic diagram of one preferred embodiment of motor output control method of electric vehicle of the present invention;
The label of each component is as follows in attached drawing.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
It please refers to Fig.1 to Fig.4, a kind of motor output control method of electric vehicle, the testing of electric motors in predetermined time period
The number N of Hall passes through the changes delta N of testing of electric motors Hall number, handle state, braking state and controller running current
Judge running state of electric motor car, wherein:
Handle is in maximum rating, Δ N=0, when controller operates in nominal current, 60V vehicle electric currents 15A or more, and 72V vehicles
Electric current 12A or more, electric vehicle are in level road operating status;Speed road conditions are adaptive, when vehicle be in road conditions it is preferable in the case of, turn
Keeping maximum lasting constant, vehicle speed linearly will switch to 110% speed in 10 seconds by 100% speed.Acceleration logic item
Part:Handle, which goes to maximum, vehicle, the power driven forwards.Arbitrarily meet said two devices condition, limitation is begun to ramp up, pole
Limit value rises to 110 speed 44Km/h from 100% speed 40Km/h, and when the two condition difference meets, and limitation is kept not
Become.Exit logical condition:Brake, loose handle, battery are less than the 95% of battery rated voltage using voltage.
Handle is in maximum rating, Δ N < 0 be in identical 100ms by motor Hall number N1, N2, N3 ...
N1-N2 < 0 at this time, N3-N2 < 0 etc., controller operate in maximum current i.e. controller maximum cut-off current, the maximum electricity of normal condition
Stream is 35A, and electric vehicle is in upward slope state;Running current is linearly increasing, and electric current increases to 35A from 15A.When monitoring to climb
When, current limit value increases, and current limit value increases to 40A from 35A.It is as follows that current limit value of climbing increases logical condition:Electricity
Stream has reached the maximum value 35A, but at this time speed do not increase, motor rotation blockage.Exit logical condition:Current value of riding reduce from
35A is gradually reduced, continues growing i.e. N1-N2 > 0, N3-N2 > 0 after constant airspeed.
Handle is 0, Δ N > 0 be in identical 100ms by motor Hall number N1, N2, N3 ... N1-N2 at this time
< 0, N3-N2 < 0 etc., controller operate in low current, general < 2A, then electric vehicle is in descending state;According to above-mentioned electricity
The operating status of motor-car adjusts the motor speed of electric vehicle.The slow drop in abrupt slope, when descending, certain reaction is given in controller intervention
Power makes speed not be further added by.It is as follows that descending monitors condition:After driving force exits, loose handle and get off the brakes, back up current vehicle
The speed of service is motor speed at this time;If controller detects no driving force intervention, and speed turns higher than controller backup
Speed, then torque intervenes, the kinetic energy of descending is converted to battery by motor by controller by increasing reverse charge as generator
Electricity;After intervention, the moment judges the variation of speed, if accelerating, torque becomes larger, if slowing down, torque reduces so that whole
Vehicle is stablized in a velocity amplitude set by user, i.e., velocity amplitude when driving force exits.Exit logical condition:It brakes, add again
Handle.
Judge that motor power exports according to the operation of road conditions and driver, increases motor automatically when road conditions are relatively good and turn
Speed achievees the purpose that quickly to arrive at;It is automatic to increase the output of motor strength when road conditions are to go up a slope, reach passability increase
Purpose;It is automatic to increase reverse charge electric current when road conditions are descendings, inhibit the speed of descending, automatic charging when reaching descending, nothing
It needs mechanical brake to intervene, reduces the purpose that the motor feels hot and increases mileage travelled.
It is different from the prior art, the motor output control method of electric vehicle of the present invention can be automatically according to road conditions and driving
The operation of person is good to judge motor power output, user experience.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. a kind of motor output control method of electric vehicle, which is characterized in that the testing of electric motors Hall in predetermined time period
Number N judges electricity by the changes delta N of testing of electric motors Hall number, handle state, braking state and controller running current
Motor vehicle operation status, wherein:Handle is in maximum rating, and Δ N=0, when controller operates in nominal current, electric vehicle is in flat
Road operating status;Handle is in maximum rating, Δ N < 0, and controller operates in maximum current, and electric vehicle is in upward slope state;Turn
Being 0, Δ N > 0, controller operates in low current, and electric vehicle is in descending state;According to the operation shape of above-mentioned electric vehicle
State adjusts the motor speed of electric vehicle.
2. the motor output control method of electric vehicle according to claim 1, which is characterized in that the electric vehicle is in flat
When line state, when handle is gone to, maximum remains unchanged while electric vehicle has forward driving forces, and into acceleration mode, controller is certainly
It is dynamic to improve motor speed, electric vehicle speed linear increment in fixed time period;When electric vehicle brake, handle unclamps or battery
When using voltage less than the voltage value set, controller controls limitation and declines, and electric vehicle exits acceleration mode.
3. the motor output control method of electric vehicle according to claim 2, which is characterized in that the electric vehicle speed exists
110% speed is switched in 10S by 100% speed, and speed is linearly incremented by;When electric vehicle brake, handle unclamp or
Battery is less than the 95% of battery rated voltage using voltage, and controller output rotating speed drops back to 100%, and electric vehicle exits acceleration mode.
4. the motor output control method of electric vehicle according to claim 1, which is characterized in that the electric vehicle operation electricity
Cleanliness increases, and when electric vehicle is in upward slope state, electric vehicle electric current is in maximum value, and electronic vehicle speed does not increase while electricity
Machine is in locked rotor condition, and controller enters current limit value enlarging state, automatic to increase motor power output;When electric vehicle is run
It is continued growing after current value reduction or electric vehicle speed are constant, controller exits current limit value enlarging state.
5. the motor output control method of electric vehicle according to claim 1, which is characterized in that described when electric vehicle is in
When descending state-driven power exits, controller is intervened, backup current motor rotating speed, and speed is situated between higher than the rotating speed of backup, then torque
Enter, after torque intervention, the variation of real-time judge speed, electric vehicle accelerates, and torque becomes larger, and electric vehicle slows down, and torque becomes smaller, and makes electricity
Motor-car stablizes the velocity amplitude in backup;When electric vehicle braked plus handle, controller exits intervention.
6. the motor output control method of electric vehicle according to claim 5, which is characterized in that the electric vehicle is in down
It is automatic to increase reverse charge electric current when ramp shaped state, inhibit the speed of descending, the automatic charging in descending.
7. according to the motor output control method of any electric vehicles of claim 1-6, which is characterized in that the Δ N is
In same time by motor Hall number N1, N2, N3 ... Nn in, posterior Hall number and previous Hall number
Numerical difference.
Priority Applications (1)
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CN201810033630.7A CN108382267B (en) | 2018-01-15 | 2018-01-15 | Motor output control method of electric vehicle |
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CN201810033630.7A CN108382267B (en) | 2018-01-15 | 2018-01-15 | Motor output control method of electric vehicle |
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CN108382267A true CN108382267A (en) | 2018-08-10 |
CN108382267B CN108382267B (en) | 2020-03-17 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109747765A (en) * | 2018-12-12 | 2019-05-14 | 天津爱玛车业科技有限公司 | Electric motor intelligent power-control method and device |
CN110370947A (en) * | 2019-08-02 | 2019-10-25 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of intelligent automobile driving motor power limitation method and system |
CN112776611A (en) * | 2019-11-07 | 2021-05-11 | 纳恩博(常州)科技有限公司 | Method of controlling vehicle, and medium |
CN112776612A (en) * | 2019-11-07 | 2021-05-11 | 纳恩博(常州)科技有限公司 | Vehicle downhill speed limit control method, vehicle and medium |
CN112874313A (en) * | 2019-11-13 | 2021-06-01 | 纳恩博(常州)科技有限公司 | Method of controlling vehicle, and medium |
CN112963523A (en) * | 2021-02-05 | 2021-06-15 | 浙江绿源电动车有限公司 | Gear switching control method of electric motorcycle |
CN114261467A (en) * | 2021-12-20 | 2022-04-01 | 天津爱玛车业科技有限公司 | Intelligent power adjusting method and system for electric vehicle |
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CN109747765A (en) * | 2018-12-12 | 2019-05-14 | 天津爱玛车业科技有限公司 | Electric motor intelligent power-control method and device |
CN109747765B (en) * | 2018-12-12 | 2022-05-20 | 天津爱玛车业科技有限公司 | Intelligent power control method and device for electric vehicle |
CN110370947A (en) * | 2019-08-02 | 2019-10-25 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of intelligent automobile driving motor power limitation method and system |
CN112776611A (en) * | 2019-11-07 | 2021-05-11 | 纳恩博(常州)科技有限公司 | Method of controlling vehicle, and medium |
CN112776612A (en) * | 2019-11-07 | 2021-05-11 | 纳恩博(常州)科技有限公司 | Vehicle downhill speed limit control method, vehicle and medium |
CN112874313A (en) * | 2019-11-13 | 2021-06-01 | 纳恩博(常州)科技有限公司 | Method of controlling vehicle, and medium |
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CN112963523A (en) * | 2021-02-05 | 2021-06-15 | 浙江绿源电动车有限公司 | Gear switching control method of electric motorcycle |
CN114261467A (en) * | 2021-12-20 | 2022-04-01 | 天津爱玛车业科技有限公司 | Intelligent power adjusting method and system for electric vehicle |
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Effective date of registration: 20210324 Address after: No. 10, West 2nd Road, Xijiang science and technology innovation industry city, Guigang City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Emma Automobile Co., Ltd Address before: 214000 Industrial Park, Yangjian Town, Xishan District, Wuxi City, Jiangsu Province Patentee before: JIANGSU AIMA VEHICLE SCIENCE & TECHNOLOGY Co.,Ltd. |