CN102303524B - Control method for electric vehicle power system with clutch device - Google Patents

Control method for electric vehicle power system with clutch device Download PDF

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Publication number
CN102303524B
CN102303524B CN 201110250002 CN201110250002A CN102303524B CN 102303524 B CN102303524 B CN 102303524B CN 201110250002 CN201110250002 CN 201110250002 CN 201110250002 A CN201110250002 A CN 201110250002A CN 102303524 B CN102303524 B CN 102303524B
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CN
China
Prior art keywords
motor
output torque
power system
gear box
clutch
Prior art date
Application number
CN 201110250002
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Chinese (zh)
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CN102303524A (en
Inventor
林巨广
顾杰
王淑旺
孙纯哲
赵志军
Original Assignee
安徽巨一自动化装备有限公司
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Application filed by 安徽巨一自动化装备有限公司 filed Critical 安徽巨一自动化装备有限公司
Priority to CN 201110250002 priority Critical patent/CN102303524B/en
Publication of CN102303524A publication Critical patent/CN102303524A/en
Application granted granted Critical
Publication of CN102303524B publication Critical patent/CN102303524B/en

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Abstract

The invention discloses a control method for an electric vehicle power system with a clutch device. The electric vehicle power system is in a structural form that the rotating output of a motor is transmitted to wheels sequentially through a flywheel, the clutch device and a gearbox. The control method for the electric vehicle power system is characterized by controlling according to different modes after a motor controller is started. By the method, current flowing through the motor controller and the motor when the vehicle is started can be reduced so as to protect the motor controller and the motor, prolong the service lives of the motor controller and the motor, promote the acceleration performance of the start stage of the electric vehicle and ensure the driving habit of a driver.

Description

The control method of the power system of electric automobile of band arrangement of clutch

Technical field

The present invention relates to the Electric Vehicle control method.

Background technology

In the face of the scarcity of current resource and the deterioration of environment, people to the safety of automobile, energy-saving and environmental protection require increasingly high.With zero-emission, the pollution-free final direction that has been known as auto trade for the electronlmobil of characteristics by industry.Though the electronlmobil power system is simple, it does not accomplish as orthodox car reliable, safety, and this also is the focus of studying at present.

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 arrangement of clutch 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 arrangement of clutch 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 a neutral gear, the output torque of then controlling motor is T, and wherein T is non-vanishing; Pick up counting simultaneously, when timing reached the time t of setting, if change speed gear box still is a neutral gear, then controlling the motor output torque was 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 is 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 arrangement of clutch 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 V cWith first gear speed V iSatisfy: 0<V c<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 a neutral gear, 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; This moment, motor began to turn to certain speed, picked up counting simultaneously, when timing reaches the time t of setting, if change speed gear box 4 is a neutral gear still, showed that driver intention is still waiting at this moment, and for fear of unnecessary 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, and 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 arrangement of clutch; 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 a neutral gear, the output torque of then controlling motor is T, and wherein T is non-vanishing; Pick up counting simultaneously, when timing reached the time t of setting, if change speed gear box (4) still is a neutral gear, then controlling the motor output torque was 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 is 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 V cWith first gear speed V iSatisfy: 0<v c<v i
CN 201110250002 2011-08-26 2011-08-26 Control method for electric vehicle power system with clutch device CN102303524B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110250002 CN102303524B (en) 2011-08-26 2011-08-26 Control method for electric vehicle power system with clutch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110250002 CN102303524B (en) 2011-08-26 2011-08-26 Control method for electric vehicle power system with clutch device

Publications (2)

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CN102303524A CN102303524A (en) 2012-01-04
CN102303524B true CN102303524B (en) 2012-12-19

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1778596A (en) * 2004-11-18 2006-05-31 丰田自动车株式会社 Electric vehicle and its control
CN101209683A (en) * 2006-12-26 2008-07-02 比亚迪股份有限公司 Electric automobile driving electric motor control method and control system thereof
CN101823444A (en) * 2010-05-06 2010-09-08 奇瑞汽车股份有限公司 Method for controlling starting torque of electric vehicle
CN102069729A (en) * 2009-11-19 2011-05-25 富士重工业株式会社 Control apparatus for electric automobile

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0993726A (en) * 1995-09-22 1997-04-04 Meidensha Corp Method for controlling electric rolling stock
JP2010246307A (en) * 2009-04-08 2010-10-28 Aisin Ai Co Ltd Power transmission control device for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1778596A (en) * 2004-11-18 2006-05-31 丰田自动车株式会社 Electric vehicle and its control
CN101209683A (en) * 2006-12-26 2008-07-02 比亚迪股份有限公司 Electric automobile driving electric motor control method and control system thereof
CN102069729A (en) * 2009-11-19 2011-05-25 富士重工业株式会社 Control apparatus for electric automobile
CN101823444A (en) * 2010-05-06 2010-09-08 奇瑞汽车股份有限公司 Method for controlling starting torque of electric vehicle

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP特开2010-246307A 2010.10.28
JP特开平9-93726A 1997.04.04

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CB03 Change of inventor or designer information

Inventor after: Liu Lei

Inventor after: Gu Jie

Inventor after: Sun Chunzhe

Inventor after: Zhao Zhijun

Inventor before: Lin Juguang

Inventor before: Gu Jie

Inventor before: Wang Shuwang

Inventor before: Sun Chunzhe

Inventor before: Zhao Zhijun

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data
TR01 Transfer of patent right

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.