CN104648184A - Multi-mode drive control method of pure electric vehicle - Google Patents
Multi-mode drive control method of pure electric vehicle Download PDFInfo
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- CN104648184A CN104648184A CN201410850451.4A CN201410850451A CN104648184A CN 104648184 A CN104648184 A CN 104648184A CN 201410850451 A CN201410850451 A CN 201410850451A CN 104648184 A CN104648184 A CN 104648184A
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- 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
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- Y02T10/72—Electric energy management in electromobility
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Abstract
The invention provides a multi-mode drive control method of a pure electric vehicle, wherein a vehicle controller judges the drive mode state of the vehicle, and corresponds to different function tables according to different drive modes, the input values of the function tables are the current vehicle speed and the opening degree of an accelerator pedal, the input values are searched in the function tables to obtain the torque parameter value, and finally, the torque output value is determined according to the product of the obtained torque parameter value and the peak torque value which can be obtained under the current rotating speed of a motor. By introducing a curved surface control strategy formulated by a vehicle speed signal in various modes, the defect caused by insufficient torque at the rear section of the driving motor is effectively avoided, the working range of the driving motor is optimized, and the economy of the whole vehicle is improved.
Description
Technical field
The present invention relates to the Drive Control Technique field of pure electric automobile, be specifically related to a kind of multi-mode drived control method of pure electric automobile.
Background technology
Pure electric automobile can under the new traffic tool of variation configuration to become the overall background of focus at environment and energy problem as the pollution-free and energy, cause the common concern of people, and obtain great development, be also one of important directions of automobile industry development from now on.
Especially, on electronlmobil, functional configuration that what electronic control system was brought enrich greatly improves user and experiences the manipulation of electronlmobil, therefore widely uses the visible trend that electronic control system is development of automobile.Driving mode selection system is wherein that chaufeur is by button or switch control rule, electronically switch between motion characteristics and comfort properties, can coordinate better to drive mobility and traveling comfort, product can be made commercially to obtain larger competitive power, embodied on many moneys new-energy automobile at present.The prerequisite of application driving mode selection system is the strategy controlled for electronlmobil feature development drive pattern.
Three kinds of drive pattern sides that the control policy generally applied at present is corresponding are mode of motion, mode standard and economic model, under often kind of drive pattern, correspondence designs its pattern strategy curve as shown in Figure 1 respectively, abscissa in figure is acceleration pedal aperture, ordinate is motor torque coefficient (torque peak that can reach under torque coefficient=current torque/current rotating speed), wherein:
Mode standard curve is that acceleration pedal aperture and motor torque coefficient are linear, and namely chaufeur steps on the acceleration pedal of certain coefficient, and VCU sends the torque rating that motor peak torque is multiplied by same factor; Mode of motion curve is positioned at above mode standard, under leading portion acceleration pedal aperture, change in torque is fast, back segment is then relatively slow, and in whole acceleration pedal open range, under the identical acceleration pedal aperture of major part, the torque rating of mode of motion is all higher than the torque rating under mode standard, and therefore under mode of motion, the acceleration capability of vehicle will due to mode standard; Otherwise economic model then, concrete dynamic property and the performance of economic performance need to be analyzed by experimental test.Above-mentioned Three models curve all covers the whole torque range of motor, and that is under any pattern, chaufeur all can allow vehicle under this pattern, play maximum power performance.
But in current control policy, in the economy mode when vehicle is in starting operating mode and low speed driving operating mode, because torque coefficient is less, therefore torque rating is in machine operation low efficiency district, is unfavorable for the raising of car load economy; Under dynamic mode, the torque coefficient change due to motor high regime is little and motor total external characteristics determines that the peak torque of motor raises with rotating speed and reduces, and when vehicle can be caused to travel in high velocity, the response moment of torsion of acceleration pedal is not enough.
Summary of the invention
In view of this, the invention provides a kind of multi-mode drived control method of pure electric automobile, the car load economy under being intended to make the output torque value of vehicle under each drive pattern state all can optimize this state.
The technical solution used in the present invention is specially:
A kind of multi-mode drived control method of pure electric automobile, entire car controller judges the drive pattern state residing for vehicle, and the function table corresponding different according to different drive patterns, the input value of described function table is current vehicle speed and acceleration pedal aperture, searched in function table by input value and obtain torque parameter value, finally according to the product determination torque output of accessible peak torque value under obtained torque parameter value and the current rotating speed of motor.
In the multi-mode drived control method of above-mentioned pure electric automobile, first entire car controller judges that the drive pattern state residing for vehicle is economic model, mode of motion or general mode; Wherein:
When drive pattern is economic model, corresponding economic model function table, is searched by current acceleration pedal aperture and current vehicle speed and obtains current torque coefficient value;
When drive pattern is mode of motion, corresponding mode of motion function table, is searched by current acceleration pedal aperture and current vehicle speed and obtains current torque coefficient value;
When drive pattern is general mode, then current torque coefficient value equals current acceleration pedal opening value;
Corresponding to current drive pattern, according to current torque coefficient, in conjunction with motor speed and motor full-throttle characteristics, calculate the torque output of drive motor, this torque rating is sent to electric machine controller by entire car controller, and electric machine controller makes drive motor drive vehicle with this output valve.
In the multi-mode drived control method of above-mentioned pure electric automobile, when the speed of a motor vehicle and acceleration pedal aperture are all identical, the torque parameter value that mode of motion obtains is greater than the torque parameter value obtained in the economy mode.
In the multi-mode drived control method of above-mentioned pure electric automobile, described torque output equals the product of maximum torque corresponding to current motor rotating speed in motor full-throttle characteristics and described current torque coefficient value.
The beneficial effect that the present invention produces is:
Multi-mode drived control method of the present invention can realize power, switching between economy and common three kinds of driving models, by introducing the curved surface control policy formulated by vehicle speed signal in each mode, effectively evade the shortcoming that drive motor back segment moment of torsion deficiency is brought, obviously can alleviate driving fatigue, optimize the operation interval of drive motor simultaneously, improve car load economy.In addition, and in the present invention, control method avoids the low moment of torsion district of motor (torque coefficient less than 0.2), effectively improves the dynamic property of car load.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, more completely the present invention can be understood better.Accompanying drawing described herein is used to provide a further understanding of the present invention, and embodiment and explanation thereof, for explaining the present invention, do not form inappropriate limitation of the present invention.
Fig. 1 is at present for the drive pattern of pure electric automobile and tactful diagram of curves corresponding to mode of motion, mode standard and economic model;
Fig. 2 is the policy map of the multi-mode drived control method of a kind of pure electric automobile of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 2, first, vehicle is provided with the mode selecting button of economic model and mode of motion to the multi-mode drived control method of a kind of pure electric automobile of the present invention, and under chaufeur does not start any mode button state, definition vehicle driving patterns is general mode.When entire car controller collects chaufeur startup mode of motion button signal, definition vehicle driving patterns is mode of motion, and when entire car controller collects chaufeur startup economic model button signal, definition vehicle driving patterns is economic model.
Entire car controller VCU judges that the drive pattern state residing for vehicle is economic model, mode of motion or general mode, and the function table corresponding different according to different drive patterns, the input value of function table is current vehicle speed and acceleration pedal aperture, searched in function table by input value and obtain torque parameter value, finally according to the product determination torque output of accessible peak torque value under obtained torque parameter value and the current rotating speed of motor; Wherein:
When drive pattern is economic model, corresponding economic model function table, is searched by current acceleration pedal aperture and current vehicle speed and obtains current torque coefficient value;
When drive pattern is mode of motion, corresponding mode of motion function table, is searched by current acceleration pedal aperture and current vehicle speed and obtains current torque coefficient value;
When drive pattern is general mode, then current torque coefficient value equals current acceleration pedal opening value;
Corresponding to current drive pattern, according to current torque coefficient, in conjunction with motor speed and motor full-throttle characteristics, calculate the torque output of drive motor, this torque rating is sent to electric machine controller by entire car controller, and electric machine controller makes drive motor drive vehicle with this output valve.
The function table of economic model and mode of motion according to current vehicle speed and acceleration pedal aperture, can be searched by these two values and obtains torque parameter value in function table.The difference of two function tables is, function table under mode of motion, under the identical speed of a motor vehicle and acceleration pedal aperture situation, the torque parameter value obtained under the torque parameter value less expensive pattern obtained wants large, therefore the final actual torque value exported wants large, corresponding vehicle is under the same speed of a motor vehicle, and chaufeur steps on same acceleration pedal aperture, good than under economic model of the dynamic property of vehicle.On the contrary, in the economy mode, under the same speed of a motor vehicle, chaufeur is when stepping on same acceleration pedal aperture, the torque parameter value obtained under the torque parameter value less expensive pattern obtained wants large, therefore the final actual torque value exported is little, and corresponding battery discharge power is also less, is conducive to reducing car load energy consumption, improve vehicle economy energy, extend electronlmobil continual mileage.
Arrange current vehicle speed as the initial conditions of function table reason by: along with motor speed raise (corresponding vehicle speed rising) motor max. output torque decline determined by motor total external characteristics, therefore at different motor speed region (corresponding different vehicle speed range), export identical torque parameter value in function table, the actual torque output obtained is different.Namely chaufeur steps on identical acceleration pedal aperture, and the power obtained low vehicle speeds compared by vehicle during when running at high speed is less, drive feel to have to be optimized.In the present invention, by using the initial conditions of current vehicle speed as function table, under making same acceleration pedal aperture condition, the torque coefficient value that different speed of a motor vehicle correspondence is found increases along with the speed of a motor vehicle and increases, final with to increase with the speed of a motor vehicle and the product (i.e. actual torque output valve) of peak torque that reduces keeps exporting more uniformly, optimize driving and feel.Torque output equals the product of maximum torque corresponding to current motor rotating speed in motor full-throttle characteristics and current torque coefficient value.
As mentioned above, embodiments of the invention are explained, obviously, as long as do not depart from fact inventive point of the present invention and effect, will be readily apparent to persons skilled in the art distortion, is also all included within protection scope of the present invention.
Claims (4)
1. the multi-mode drived control method of a pure electric automobile, it is characterized in that, entire car controller judges the drive pattern state residing for vehicle, and the function table corresponding different according to different drive patterns, the input value of described function table is current vehicle speed and acceleration pedal aperture, searched in function table by input value and obtain torque parameter value, finally according to the product determination torque output of accessible peak torque value under obtained torque parameter value and the current rotating speed of motor.
2. the multi-mode drived control method of pure electric automobile according to claim 1, is characterized in that, first entire car controller judges that the drive pattern state residing for vehicle is economic model, mode of motion or general mode; Wherein:
When drive pattern is economic model, corresponding economic model function table, is searched by current acceleration pedal aperture and current vehicle speed and obtains current torque coefficient value;
When drive pattern is mode of motion, corresponding mode of motion function table, is searched by current acceleration pedal aperture and current vehicle speed and obtains current torque coefficient value;
When drive pattern is general mode, then current torque coefficient value equals current acceleration pedal opening value;
Corresponding to current drive pattern, according to current torque coefficient, in conjunction with motor speed and motor full-throttle characteristics, calculate the torque output of drive motor, this torque rating is sent to electric machine controller by entire car controller, and electric machine controller makes drive motor drive vehicle with this output valve.
3. the multi-mode drived control method of pure electric automobile according to claim 2, is characterized in that, when the speed of a motor vehicle and acceleration pedal aperture are all identical, the torque parameter value that mode of motion obtains is greater than the torque parameter value obtained in the economy mode.
4. the multi-mode drived control method of pure electric automobile according to claim 2, is characterized in that, described torque output equals the product of maximum torque corresponding to current motor rotating speed in motor full-throttle characteristics and described current torque coefficient value.
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Cited By (24)
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|---|---|---|---|---|
| CN105128852A (en) * | 2015-09-02 | 2015-12-09 | 华晨汽车集团控股有限公司 | Drive control mechanism of extended-range electric vehicle |
| CN107139752A (en) * | 2017-05-22 | 2017-09-08 | 奇瑞汽车股份有限公司 | Battery pack power management method, device and electric vehicle |
| CN108045268A (en) * | 2017-12-12 | 2018-05-18 | 安徽江淮汽车集团股份有限公司 | Pure electric automobile energy reclaiming method and system |
| CN108621859A (en) * | 2017-03-24 | 2018-10-09 | 华晨汽车集团控股有限公司 | A kind of drive control method of pure electric automobile |
| CN109017436A (en) * | 2018-06-14 | 2018-12-18 | 中兴智能汽车有限公司 | A kind of electric car exits the Motor torque follower method of when in slope |
| CN109383511A (en) * | 2018-10-17 | 2019-02-26 | 天津易众腾动力技术有限公司 | A kind of method of electric vehicle driver acceleration request intents |
| CN110154783A (en) * | 2019-04-28 | 2019-08-23 | 南京金龙客车制造有限公司 | Based on opening four kinds of dynamic mode entire car controllers of fertile automobile |
| CN110525417A (en) * | 2018-05-25 | 2019-12-03 | 比亚迪股份有限公司 | Control method for vehicle, system and vehicle |
| CN110667589A (en) * | 2018-12-29 | 2020-01-10 | 长城汽车股份有限公司 | Driving mode skip control method, system and controller |
| CN110949284A (en) * | 2019-11-06 | 2020-04-03 | 宝能(广州)汽车研究院有限公司 | Vehicle, and control method and control device thereof |
| CN110979027A (en) * | 2019-12-31 | 2020-04-10 | 厦门金龙联合汽车工业有限公司 | Control method for economic mode of pure electric bus |
| CN111038515A (en) * | 2020-01-15 | 2020-04-21 | 江铃汽车股份有限公司 | Electric automobile driving mode control method |
| CN111137140A (en) * | 2020-03-03 | 2020-05-12 | 厦门金龙联合汽车工业有限公司 | Acceleration control method of electric automobile |
| CN112644502A (en) * | 2020-12-31 | 2021-04-13 | 大运汽车股份有限公司 | Control method suitable for driving mode switching of new energy commercial vehicle |
| CN112721653A (en) * | 2021-01-08 | 2021-04-30 | 东风华神汽车有限公司 | Method and device for controlling motion mode of direct drive motor of pure electric vehicle |
| CN113135096A (en) * | 2020-01-17 | 2021-07-20 | 北京配天技术有限公司 | Electric vehicle energy management control method and system and computer storage medium |
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| CN115384321A (en) * | 2022-09-28 | 2022-11-25 | 徐工集团工程机械股份有限公司科技分公司 | Multi-working-condition operation mode control method and system for pure electric loader |
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| CN105128852A (en) * | 2015-09-02 | 2015-12-09 | 华晨汽车集团控股有限公司 | Drive control mechanism of extended-range electric vehicle |
| CN108621859A (en) * | 2017-03-24 | 2018-10-09 | 华晨汽车集团控股有限公司 | A kind of drive control method of pure electric automobile |
| CN107139752A (en) * | 2017-05-22 | 2017-09-08 | 奇瑞汽车股份有限公司 | Battery pack power management method, device and electric vehicle |
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| CN109017436A (en) * | 2018-06-14 | 2018-12-18 | 中兴智能汽车有限公司 | A kind of electric car exits the Motor torque follower method of when in slope |
| CN109017436B (en) * | 2018-06-14 | 2021-09-28 | 中兴智能汽车有限公司 | Motor torque following method for electric automobile when exiting from parking slope |
| CN109383511A (en) * | 2018-10-17 | 2019-02-26 | 天津易众腾动力技术有限公司 | A kind of method of electric vehicle driver acceleration request intents |
| CN110667589A (en) * | 2018-12-29 | 2020-01-10 | 长城汽车股份有限公司 | Driving mode skip control method, system and controller |
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| CN110949284A (en) * | 2019-11-06 | 2020-04-03 | 宝能(广州)汽车研究院有限公司 | Vehicle, and control method and control device thereof |
| CN110979027B (en) * | 2019-12-31 | 2021-05-25 | 厦门金龙联合汽车工业有限公司 | Control method for economic mode of pure electric bus |
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| CN111137140A (en) * | 2020-03-03 | 2020-05-12 | 厦门金龙联合汽车工业有限公司 | Acceleration control method of electric automobile |
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| CN114312341B (en) * | 2020-09-30 | 2023-12-12 | 比亚迪股份有限公司 | Electric vehicle and energy-saving control method and device thereof |
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| CN114537155A (en) * | 2020-11-26 | 2022-05-27 | 北京新能源汽车股份有限公司 | Method and device for determining output torque of motor and electric vehicle |
| CN114537155B (en) * | 2020-11-26 | 2024-04-02 | 北京新能源汽车股份有限公司 | Method and device for determining motor output torque and electric automobile |
| CN112644502A (en) * | 2020-12-31 | 2021-04-13 | 大运汽车股份有限公司 | Control method suitable for driving mode switching of new energy commercial vehicle |
| CN112721653A (en) * | 2021-01-08 | 2021-04-30 | 东风华神汽车有限公司 | Method and device for controlling motion mode of direct drive motor of pure electric vehicle |
| CN114661021A (en) * | 2021-04-02 | 2022-06-24 | 北京新能源汽车股份有限公司 | Hardware-in-loop test method and device for controller |
| CN114661021B (en) * | 2021-04-02 | 2025-04-11 | 北京新能源汽车股份有限公司 | A controller hardware-in-the-loop testing method and device |
| CN113740079A (en) * | 2021-09-28 | 2021-12-03 | 奇瑞新能源汽车股份有限公司 | Accelerator calibration method and device of electric automobile |
| JP7513649B2 (en) | 2022-03-28 | 2024-07-09 | 本田技研工業株式会社 | Sudden acceleration suppression device |
| CN115384321A (en) * | 2022-09-28 | 2022-11-25 | 徐工集团工程机械股份有限公司科技分公司 | Multi-working-condition operation mode control method and system for pure electric loader |
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