CN102320253B - Control method of electric vehicle power system with multigear speed-changing box - Google Patents
Control method of electric vehicle power system with multigear speed-changing box Download PDFInfo
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- CN102320253B CN102320253B CN 201110250000 CN201110250000A CN102320253B CN 102320253 B CN102320253 B CN 102320253B CN 201110250000 CN201110250000 CN 201110250000 CN 201110250000 A CN201110250000 A CN 201110250000A CN 102320253 B CN102320253 B CN 102320253B
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Abstract
The invention discloses a control method of an electric vehicle power system with a multigear speed-changing box. The electric vehicle power system has the structure form that the rotating output of a motor is transmitted to wheels by a flywheel, a clutch device and the speed-changing box successively. The control method is characterized by carrying out control by different modes after a motor controller is started. In the method disclosed by the invention, the current flowing through the motor controller and the motor when a vehicle starts to move can be reduced, so that the motor controller and the motor are protected, the service lives of the motor controller and the motor are prolonged, the accelerating performance of the starting stage of the electric vehicle is improved, and the driving habit of a driver is ensured.
Description
Technical background
The present invention relates to the Electric Vehicle control method.
Background technology
Current, under the support energetically of national policy, each big automobile vendor, colleges and universities and research institution to the research of electronlmobil carry out like a raging fire.Wherein, the research of the control policy of power system of electric automobile is a wherein very important direction, and it directly has influence on the reliability of power system, the life-span of critical component such as motor, the driving habit of chaufeur etc.
Present Electric Vehicle kind is a lot, but the i.e. whether gear shift and different control methods of its key distinction to power system.Generally all be to let motor start the direct drive vehicle starting during electronlmobil starting at present, can make the electric current that flows through in electric machine controller and the motor excessive like this from zero-speed, big to electric machine controller and motor damage, thus influence its service life.Thereby electronlmobil that can not gear shift can't let motor when high speed, be operated in efficient district and make the car load inefficiency, and tractive performance is poor.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point; A kind of control method of the power system of electric automobile with multi-speed gear box is provided; So that machine operation in the startability of efficiently distinguishing, improve motor in electric automobile, thereby the electric current that reduces to flow through in electric machine controller and the motor when motor band carries reduces the damage to electric machine controller and motor; Prolong the service life of electric machine controller and motor, and keep the driving habit of chaufeur.
Technical solution problem of the present invention adopts following scheme:
The control method of the power system of electric automobile of band multi-speed gear box of the present invention; The version of said power system of electric automobile is: the rotation output of motor is transferred to wheel through flywheel, arrangement of clutch and change speed gear box successively, and the control method that it is characterized in that said power system of electric automobile is to start the back at electric machine controller to control by following pattern:
If change speed gear box is at neutral gear, brake pedal is not operated, and parking brake is not pulled up, and the output torque of then controlling motor is T, and wherein T is non-vanishing;
If change speed gear box is operated or parking brake is pulled up at neutral gear, brake pedal, then controlling the motor output torque is zero;
If change speed gear box is at neutral gear, and arrangement of clutch do not have full engagement, and then controlling the motor output torque is T;
If change speed gear box is not at neutral gear, and the arrangement of clutch full engagement, and has the speed of a motor vehicle to be less than or equal to critical speed Vc, then controlling the motor output torque is zero;
If change speed gear box is not at neutral gear, and the arrangement of clutch full engagement, and the speed of a motor vehicle arranged greater than critical speed Vc, there are following three kinds of patterns:
Brake pedal is operated, and then controlling the motor output torque is zero;
Brake pedal and acceleration pedal all are not operated, and then controlling the motor output torque is T;
Acceleration pedal is operated, and the depth control motor that then is operated according to acceleration pedal is exported in corresponding torque.
The characteristics of the control method of the power system of electric automobile of band multi-speed gear box of the present invention also are:
Set said motor output torque T and be when change speed gear box is one grade, the fully loaded first gear speed V that goes of vehicle
iBe 2km/h＜V
i＜50km/h.
Said critical speed Vc and first gear speed V
iSatisfy: 0＜Vc＜V
i
Compared with present technology, the present invention has following remarkable result:
1, the present invention controls motor and when not loading vehicle load, starts; The current ratio that flows through electric machine controller and motor when making electric motor starting loads when going up the vehicle load startup little a lot; Protect electric machine controller and motor, prolonged the service life of electric machine controller and motor.
2, the present invention makes chaufeur when bend the throttle not, vehicle can be gone with certain speed, has kept the driving habit of chaufeur to traditional vehicle.
When 3, the motor in the power system that the inventive method is controlled is set to asynchronous dynamo, according to driving vehicle start again after the rotation of the inventive method control motor, enough big vehicle start moment of torsion can be provided, the vehicle start acceleration capability can be excellent more.
4, the quality of the flywheel in the power system that the inventive method is controlled increases; Promptly increased the rotor inertia after motor rotates; Flow through the electric current of electric machine controller and motor in the time of can further reducing vehicle start, thereby further protect electric machine controller and motor.
Description of drawings
Fig. 1 is a power system structural representation of the present invention;
Fig. 2 is the diagram of circuit of the present invention to the control method of power system;
Label among the figure: 1 motor, 2 motor flywheels, 3 arrangement of clutch, 4 change speed gear boxs, 5 wheels.
The specific embodiment
Referring to Fig. 1; Fig. 2; In the present embodiment, the structure setting of the power system of electric automobile of band arrangement of clutch comprises motor 1, arrangement of clutch 3 and the change speed gear box 4 that flywheel 2 is housed, and the rotation output of motor 1 is transferred to wheel 5 through flywheel 2, arrangement of clutch 3 and change speed gear box 4 successively.
The control method of power system of electric automobile is to start the back at electric machine controller to be undertaken by following pattern in the present embodiment:
If change speed gear box 4 is at neutral gear, if brake pedal is not operated and parking brake is not pulled up, this moment, the load of vehicle was not applied on the motor, and the output torque of then controlling motor is T, and wherein T is non-vanishing, and this moment, motor began to turn to certain speed; If brake pedal is operated or parking brake is pulled up, show that chaufeur wants to wait for, the intention of driving immediately not, for fear of power consumption, then controlling the motor output torque is zero.
If change speed gear box 4 is at neutral gear, and arrangement of clutch 3 do not have full engagement, shows that chaufeur hangs up gear with change speed gear box 4, and stepped on arrangement of clutch 3 that starting prepared by vehicle or just at motoring condition, then controlling the motor output torque is T;
If change speed gear box 4 is not at neutral gear, and arrangement of clutch 3 full engagements, and has the speed of a motor vehicle to be less than or equal to critical speed Vc, then controlling the motor output torque is zero.Critical speed Vc is a less numerical value, if arrangement of clutch 3 full engagements and the speed of a motor vehicle are worth less than this, assert that then vehicle is in one of following two states: a kind of is quiescence, and another kind is the motor rotation blockage state.If vehicle under static state chaufeur has started electric machine controller when change speed gear box has gear, if this moment the motor output torque, then vehicle can be caused danger to preshoot; If motor continues output torque at the stall state, then extremely damage electric machine controller and motor.So control motor output torque is zero under this operating mode;
If change speed gear box 4 is at neutral gear, and if arrangement of clutch 3 full engagements, and the speed of a motor vehicle is arranged greater than critical speed Vc, show that vehicle is in the state that goes with certain speed this moment, has following three kinds of patterns:
Brake pedal is stepped on by chaufeur, shows that chaufeur wants to slow down, and for fear of power consumption, then controlling the motor output torque is zero;
Brake pedal and acceleration pedal are not all stepped on by chaufeur, show that chaufeur wants to let vehicle operation at idling mode, and then controlling the motor output torque is T;
Acceleration pedal is operated, shows that chaufeur wants to quicken the depth control motor output corresponding torque of then stepping on according to acceleration pedal.
In the practical implementation, set motor output torque T and be when change speed gear box is one grade, the fully loaded first gear speed V that goes of vehicle
iBe 2km/h＜V
i＜50km/h.Control can make vehicle can let chaufeur not go with certain speed during stepping on accelerator pedal at suitable gear like this, the driving habit when having kept chaufeur to drive conventional truck, critical speed V
cWith first gear speed V
iSatisfy: 0＜V
c＜V
i
In the practical implementation, all being after electric machine controller starts for the control of motor output torque, is to realize through electric machine controller.
Claims (1)
1. be with the control method of the power system of electric automobile of multi-speed gear box; The version of said power system of electric automobile is: the rotation output of motor (1) is passed through flywheel (2), arrangement of clutch (3) and change speed gear box (4) successively and is transferred to wheel (5), and the control method that it is characterized in that said power system of electric automobile is to start the back at electric machine controller to control by following pattern:
If change speed gear box (4) is at neutral gear, brake pedal is not operated, and parking brake is not pulled up, and the output torque of then controlling motor is T, and wherein T is non-vanishing;
If change speed gear box (4) is at neutral gear, brake pedal is operated or parking brake is pulled up, and then controlling the motor output torque is zero;
If change speed gear box (4) is at neutral gear, and arrangement of clutch (3) do not have full engagement, and then controlling the motor output torque is T;
If change speed gear box (4) is not at neutral gear, and arrangement of clutch (3) full engagement, and has the speed of a motor vehicle to be less than or equal to critical speed Vc, then controlling the motor output torque is zero;
If change speed gear box (4) is not at neutral gear, and arrangement of clutch (3) full engagement, and the speed of a motor vehicle arranged greater than critical speed Vc, there are following three kinds of patterns:
Brake pedal is operated, and then controlling the motor output torque is zero;
Brake pedal and acceleration pedal all are not operated, and then controlling the motor output torque is T;
Acceleration pedal is operated, and the depth control motor that then is operated according to acceleration pedal is exported in corresponding torque;
Set said motor output torque T and be when change speed gear box is one grade, the fully loaded first gear speed V that goes of vehicle
iBe 2km/h<v
i<50kmh;
Said critical speed Vc and first gear speed V
iSatisfy: 0<vc<v
i
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250000 CN102320253B (en) | 2011-08-26 | 2011-08-26 | Control method of electric vehicle power system with multigear speed-changing box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250000 CN102320253B (en) | 2011-08-26 | 2011-08-26 | Control method of electric vehicle power system with multigear speed-changing box |
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| Publication Number | Publication Date |
|---|---|
| CN102320253A CN102320253A (en) | 2012-01-18 |
| CN102320253B true CN102320253B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110250000 Active CN102320253B (en) | 2011-08-26 | 2011-08-26 | Control method of electric vehicle power system with multigear speed-changing box |
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| CN109823161B (en) * | 2019-03-26 | 2024-03-19 | 浙江工业职业技术学院 | Three-motor hybrid power variable speed driving system for vehicle and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0993726A (en) * | 1995-09-22 | 1997-04-04 | Meidensha Corp | Method for controlling electric rolling stock |
| CN100410098C (en) * | 2004-11-18 | 2008-08-13 | 丰田自动车株式会社 | Electric vehicle and its control |
| CN101209683B (en) * | 2006-12-26 | 2011-06-15 | 比亚迪股份有限公司 | Electric automobile driving electric motor control method and control system thereof |
| JP2010246307A (en) * | 2009-04-08 | 2010-10-28 | Aisin Ai Co Ltd | Power transmission control device for vehicle |
| JP5520578B2 (en) * | 2009-11-19 | 2014-06-11 | 富士重工業株式会社 | Electric vehicle control device |
| CN101823444B (en) * | 2010-05-06 | 2012-06-27 | 奇瑞汽车股份有限公司 | Method for controlling starting torque of electric vehicle |
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| CB03 | Change of inventor or designer information |
Inventor after: Liu Lei Inventor after: Gu Jie Inventor after: Zhao Zhijun Inventor after: Sun Chunzhe Inventor before: Lin Juguang Inventor before: Gu Jie Inventor before: Wang Shuwang Inventor before: Zhao Zhijun Inventor before: Sun Chunzhe |
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Effective date of registration: 20160907 Address after: Baohe Industrial District of Hefei City, Anhui province 230051 Shanghai Road East Dalian Road Patentee after: HEFEI JUYI POWER SYSTEM CO., LTD. Address before: 230051 Anhui Province, Hefei City Industrial Park, Baohe Jianghuai heavy industry base Patentee before: Anhui Jee Automation Equipment Co., Ltd. |