CN102121527B - Method for automatic-manual transmission gear shifting for electronic automobile - Google Patents
Method for automatic-manual transmission gear shifting for electronic automobile Download PDFInfo
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- CN102121527B CN102121527B CN 201110058685 CN201110058685A CN102121527B CN 102121527 B CN102121527 B CN 102121527B CN 201110058685 CN201110058685 CN 201110058685 CN 201110058685 A CN201110058685 A CN 201110058685A CN 102121527 B CN102121527 B CN 102121527B
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Abstract
The invention aims to solve the technical problem of providing a method for automatic-manual transmission gear shifting for an electronic automobile, and executing four forward gears and one backward gear by adopting an automatic-manual transmission gear shafting mechanism and adding a control strategy. According to the method, manual gear shifting and automatic gear shifting are realized by means of an AMT (automatic-manual transmission) gear shifting device of a normal fuel oil automobile; a gear shifting rod is controlled to six function positions when in manual gear shifting to output switch signals of gears to a finished automobile controller; the gears are judged by the finished automobile controller according to the switch signal combination corresponding to the six function positions; then gears changing confirmation orders are transmitted by combining the current state of the automobile; and finally the motive output value domain of the current gears is changed through a motor controller, and the gears are displayed on a combination meter to realize speed changing.
Description
Technical field
The invention belongs to the electric vehicle field, particularly a kind of auto-manual gear shift method of electric vehicle.
Background technique
When determining the slow-speed of revolution, just can export the motor characteristic of pure electric automobile maximum moment of torsion, accelerating ability is strong, and in order to reduce mechanically operated efficiency losses, directly taked the fixed speed ratio mode of first stage decelerator to decelerating through motor, taked the mode speed change of physics unlike traditional fuel-engined vehicle.Driver's one pin accelerates to step down, just can reach very high speed per hour several seconds, and the characteristics of electric vehicle are very quiet, so just have larger hidden danger for pedestrian and the safety of self, particularly more dangerous during driver's error, even because pedestrian's a electric vehicle of sailing at a high speed after one's death also probably can't hear.The design that has is to attempt to add that to electric motor car the mode that the pedestrian sounds when close improves safety, and this is the initiatively loose strategy of keeping away of a kind of pedestrian.
Such as traditional fuel-engined vehicle multi-speed transmission being arranged, is not to improve Security but the size of change moment of torsion with its main purpose.Yet for a beginner, it is the first step that study manual gear vehicle is driven, and its characteristics are exactly in the time of the study starting, allows the driver almost not make mistakes and possibility that car is changed up.
Yet not having at present a kind of design makes from this angle of accelerating performance of control driver or electric vehicle itself and improves forenamed Security.
Summary of the invention
Technical problem to be solved by this invention just provides the auto-manual gear shift method of electric vehicle, adopts the auto-manual gearshift to add that control strategy goes out 4 forward gears and 1 backward gear.
Technological scheme of the present invention is as follows:
A kind of auto-manual gear shift method of electric vehicle, its method may further comprise the steps:
(1) automatic catch switches to manual gear:
Shift handle is positioned at the position 1 of AMT selector, makes switching signal 4 produce a high level 1, and entire car controller judges whether current vehicle speed is zero, if non-vanishing stopping to be calculated, if zero, then allow this input signal 1 calculate 1 with default value 0, representative is manual, and wherein default value 0 representative automatically;
(2) switching that upgrades and lower category under the manual gear pattern:
Switching upgrades: after switching under the manual mode, be defaulted as manual N shelves, entire car controller for shift handle to the position 5 of AMT selector and position 6 and the switching signal exported of automatic N shelves and R shelves do not carry out; When shift handle to time position 2, namely produce one time 1,1,0,0 switching signal combination, entire car controller provides a request that upgrades, and switches to and advances 1 grade; This velocity range of 1 grade is limited between 0 to Vmax1, if Joystick will rise once shelves again to 2 grades, entire car controller will judge that current vehicle velocity V is whether at the ideal regional Vmax1-L ~ Vmax1 that shifts gears, if less than ideal gearshift zone, the speed of a motor vehicle is excessively low after gearshift, then the moment of torsion of output can become with its value that is lower than Vmax1-L inverse correlation to calculate, until V reach the moment of torsion exported behind the Vmax1-L just only with accelerator pedal signal correction; The like carry out 2 grades to 3 grades switching;
Switching lowers category: when handling shift handle to the position 4 times a time, the AMT selector produces one group of switching signal 1,0,1,0, it is the request of lowering category that entire car controller is judged this, if gear is 2 grades before the downshift, the speed of a motor vehicle is higher than Vmax1, and the temporary transient maintenance of vehicle control unit controls vehicle is slided; The entire car controller request comes recovered energy in the mode of generating and reduces the speed of a motor vehicle to stop generating behind Vmax1 when bend the throttle, and enables the accelerator pedal signal, and the speed of a motor vehicle is limited in the Vmax1; The like carry out each gear and lower category; When lowering category neutral, vehicle control unit controls vehicle sliding, accelerator pedal invalidating signal;
(3) automatic catch
Judging current when entire car controller is automatic catch, the level 1,0 that obtains when then gearshift is to position 3,0,0 is judged as the D shelves, the level 0 that position 5 obtains, 1,0,0 is judged as the N shelves, the level 0 that position 6 obtains, 0,1,0 is judged as the R shelves, it is invalid that the level that export under the automatic catch pattern position 2 and position 4 is judged as, and is failure to actuate.
The effect that the present invention reaches is, reaches the gearshift purpose in cost-effective mode, do not sacrifice transmission efficiency.After this gearshift mode had been arranged, first had solved the danger that misoperation brings; The speed of a motor vehicle can be relatively easy to be controlled at certain limit to have reduced anxious acceleration or velocity variations fluctuation excessive and a large amount of energy content of battery loss of bringing improves and drives the power consumption Economy thereby second is controlled at certain limit to gear the driver.If must bring certain loss in efficiency and adopt other machineries or physics mode to shift gears, be relatively more difficult in battery capacity and the continuous shorter of money electric motor car of mileage that makes.
Description of drawings
The position of function figure of Fig. 1 AMT selector;
The interface pin definition of Fig. 2 AMT selector switching signal;
Fig. 3 administrative division map of shifting gears.
Embodiment
Technological scheme of the present invention is that the AMT selector of using conventional fuel-engined vehicle is realized manual shift and self shifter.By handling gear level to 6 position of function such as Fig. 1, arrive entire car controller with switching signal such as the table 1 of exporting gear during manual shift.
Table 1
The interface pin definition of switching signal has switching signal 1, switching signal 2, switching signal 3, switching signal 4 such as Fig. 2.The switching signal combination judgement gear that entire car controller is corresponding according to these 6 position of function, then send shift in conjunction with the vehicle current state and confirm instruction, finally change the power output codomain of current gear by electric machine controller, and gear is presented on the combination instrument, realize speed change.Wherein among Fig. 2, B1 is+12V power supply signal (obtaining by key operation) that B2 is switching signal 1, B3 is switching signal 2, B4 is switching signal 3, and B5 is switching signal 4, and B6 is GND, by gear on-off signal and power supply share, B7 is backlight electric power anodal (from integral switch), and B8 is the economic model switching signal, and B9 is the backlight negative pole, with the economic model switching signal share (from integral switch), B11-B12 is empty.
Self shifter is by gear level being moved to position 1 among Fig. 1, make it switch to automatic mode from manual mode, switching rear gear level and can automatically reset to position 3.Under this automatic mode, forward gears is shown as D, and need not to shift gears.
As aforementioned, forward gears is D shelves corresponding position 3 under the automatic mode, neutral gear is N shelves corresponding position 5, backward gear is R shelves corresponding position 6, be failure to actuate and under this pattern shift handle is manipulated to position 2 and position 4, and only have when car load remains static and gear level to be manipulated to the switching that automatic catch and manual gear just can be finished in position 1.
After switching to manual gear, shift handle places position 3, and the gear of acquiescence is neutral N.2 finish once and upgrade to the position by handling gear level, 4 finish downshift one time to the position.Forward gear has 4 to be respectively 1 grade under the manual mode, and 2 grades, 3 grades, 4 grades, one of backward gear is the R shelves.
Its shift control strategy is summarized as follows (in conjunction with Fig. 3):
Entire car controller has corresponding pin to be used for the numeral input of gear signal, connects by electrical wiring harness.Automatic catch switches to manual gear, position 1 makes switching signal 4 produce a high level 1, and entire car controller judges whether current vehicle speed is zero, if non-vanishing stopping to be calculated, if zero, then allow this input signal 1 and default value 0(representative automatically) calculate to the 1(representative manually).
After switching under the manual mode, be defaulted as manual N shelves, entire car controller for shift handle to the position 5 and the switching signal exported of position 6 and automatic N shelves and R shelves do not carry out.When shift handle to time position 2, namely produce one time 1,1,0,0 switching signal combination, entire car controller provides a request that upgrades, and switches to and advances 1 grade.This velocity range of 1 grade is limited between 0 to Vmax1, if Joystick will rise once shelves again to 2 grades, entire car controller will judge current vehicle velocity V whether in ideal gearshift zone (Vmax1-L ~ Vmax1), if less than ideal gearshift zone, the speed of a motor vehicle is excessively low after gearshift, then the moment of torsion of output can become with its value that is lower than Vmax1-L inverse correlation to calculate, until V reach the moment of torsion exported behind the Vmax1-L just only with accelerator pedal signal correction.
All are more efficient in the ideal of each gear gearshift zone gearshift, the like can carry out 2 grades to 3 grades switching, and all strategies that upgrade.
When handling shift handle to the position 4 times a time, can produce one group of switching signal 1,0,1,0, it is the request of lowering category that entire car controller can be judged this, if gear is 2 grades before the downshift, the speed of a motor vehicle is higher than Vmax1, vehicle can temporarily keep sliding, the mode that entire car controller can ask to generate electricity when bend the throttle is come recovered energy and reduces the speed of a motor vehicle to stop generating behind Vmax1, and enables the accelerator pedal signal, and the speed of a motor vehicle is limited in the Vmax1.The like can draw the control strategy that each gear lowers category.
When downshift arrives neutral, this will slide, the accelerator pedal invalidating signal.
It is speed close to zero the time that manual reverse gear also needs when car comes to a complete stop, and just can switch, if change to manual reverse gear when vehicle advances, limits it on the strategy and is failure to actuate.The very fast VmaxR that is limited to of manual reverse gear.
If judge currently for automatic catch when entire car controller in the control strategy of automatic transmission, the level 1,0,0,0 that then obtains during drive range 3 is judged as the D shelves, the level 0,1,0,0 that position 5 obtains is judged as the N shelves, the level 0,0,1,0 that position 6 obtains is judged as the R shelves.It is invalid that the level that export under the automatic catch pattern position 2 and position 4 is judged as, and is failure to actuate.And during automatic catch, the maximum value of accelerator pedal signal is corresponding during the D shelves can obtain highest speed after calculating, and what obtain after calculating is the value of VmaxR(after by speed limit and the value that the accelerator pedal signal of R shelves is floored is corresponding).
Claims (3)
1. the auto-manual gear shift method of an electric vehicle, described method is that the AMT selector of using conventional fuel-engined vehicle is realized manual shift and self shifter, pass through to handle gear level to 6 position of function during manual shift, switching signal with the output gear arrives entire car controller, the switching signal combination judgement gear that entire car controller is corresponding according to these 6 position of function, then send shift in conjunction with the vehicle current state and confirm instruction, finally change the power output codomain of current gear by electric machine controller, and gear is presented on the combination instrument, realize speed change;
Described method specifically may further comprise the steps:
(1) automatic catch switches to manual gear:
Shift handle is positioned at the position 1 of AMT selector, makes switching signal 4 produce a high level 1, and entire car controller judges whether current vehicle speed is zero, if non-vanishing stopping to be calculated, if zero, then allow this input signal 1 calculate 1 with default value 0, representative is manual, and wherein default value 0 representative automatically;
(2) switching that upgrades and lower category under the manual gear pattern:
Switching upgrades: after switching under the manual mode, be defaulted as manual N shelves, entire car controller for shift handle to the position 5 of AMT selector and position 6 and the switching signal exported of automatic N shelves and R shelves do not carry out; When shift handle to time position 2, namely produce one time 1,1,0,0 switching signal combination, entire car controller provides a request that upgrades, and switches to and advances 1 grade; This velocity range of 1 grade is limited between 0 to Vmax1, if Joystick will rise once shelves again to 2 grades, entire car controller will judge that current vehicle velocity V is whether at the ideal regional Vmax1-L ~ Vmax1 that shifts gears, if less than ideal gearshift zone, the speed of a motor vehicle is excessively low after gearshift, then the moment of torsion of output can become with its value that is lower than Vmax1-L inverse correlation to calculate, until V reach the moment of torsion exported behind the Vmax1-L just only with accelerator pedal signal correction; The like carry out 2 grades to 3 grades switching;
Switching lowers category: when handling shift handle to the position 4 times a time, the AMT selector produces one group of switching signal 1,0,1,0, it is the request of lowering category that entire car controller is judged this, if gear is 2 grades before the downshift, the speed of a motor vehicle is higher than Vmax1, and the temporary transient maintenance of vehicle control unit controls vehicle is slided; The entire car controller request comes recovered energy in the mode of generating and reduces the speed of a motor vehicle to stop generating behind Vmax1 when bend the throttle, and enables the accelerator pedal signal, and the speed of a motor vehicle is limited in the Vmax1; The like carry out each gear and lower category; When lowering category neutral, vehicle control unit controls vehicle sliding, accelerator pedal invalidating signal;
(3) automatic catch
Judging current when entire car controller is automatic catch, the level 1,0 that obtains when then gearshift is to position 3,0,0 is judged as the D shelves, the level 0 that position 5 obtains, 1,0,0 is judged as the N shelves, the level 0 that position 6 obtains, 0,1,0 is judged as the R shelves, it is invalid that the level that export under the automatic catch pattern position 2 and position 4 is judged as, and is failure to actuate.
2. the auto-manual gear shift method of electric vehicle according to claim 1, it is characterized in that: what obtain after the corresponding calculating of the maximum value of accelerator pedal signal when the D of automatic catch shelves is highest speed, that obtain after the corresponding calculating of the value that the accelerator pedal signal is floored when the R shelves is VmaxR, namely by the value after the speed limit.
3. the auto-manual gear shift method of electric vehicle according to claim 1 and 2, it is characterized in that: manually reverse gear need to work as car and comes to a complete stop that to be speed just can switch when zero, if when vehicle advances, change to manual reverse gear, limit it on the strategy and be failure to actuate, manually the very fast VmaxR that is limited to of reverse gear.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103158582B (en) * | 2011-12-19 | 2015-04-22 | 北汽福田汽车股份有限公司 | Gear-shifting control method of pure electric vehicle |
| CN103527762B (en) * | 2013-10-29 | 2016-07-27 | 长城汽车股份有限公司 | Stopping device for the transmission assembly of auto-manual |
| US9802618B2 (en) * | 2015-05-19 | 2017-10-31 | Ford Global Technologies, Llc | Systems and methods for improving manual transmission shifting |
| CN106907480A (en) * | 2017-03-23 | 2017-06-30 | 中国第汽车股份有限公司 | A kind of method of discrimination of automobile-used shift handle shift mode |
| CN111207208A (en) * | 2018-11-21 | 2020-05-29 | 北汽福田汽车股份有限公司 | Gear shifting method and device and vehicle |
| CN110696630B (en) * | 2019-10-15 | 2023-03-14 | 神龙汽车有限公司 | Control system and method compatible with automatic gear electric automobile and manual gear electric automobile |
| CN113815427B (en) * | 2020-06-19 | 2024-01-23 | 北京新能源汽车股份有限公司 | Operation control method and device and electric automobile |
| CN114645938B (en) * | 2020-12-18 | 2023-08-18 | 长城汽车股份有限公司 | Method and device for realizing gear shifting based on manual-automatic gear shifter and automobile |
| CN112648360B (en) * | 2020-12-18 | 2023-02-21 | 奇瑞新能源汽车股份有限公司 | Pure electric vehicle gear shifting system and method with two-gear transmission |
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| US4633728A (en) * | 1985-09-05 | 1987-01-06 | Ford Motor Company | Gear selector control for manual transmission |
| DE19938528A1 (en) * | 1999-08-13 | 2001-02-15 | Audi Ag | Control device for automatically and manually shiftable transmissions |
| US7199551B2 (en) * | 2003-09-26 | 2007-04-03 | Ford Global Technologies, Llc | Method and system for controllably transferring energy from a high voltage bus to a low voltage bus in a hybrid electric vehicle |
| DE102006016780A1 (en) * | 2006-04-10 | 2007-10-11 | Ford Global Technologies, LLC, Dearborn | Method and device for selecting driving programs in automatic transmissions |
| JP4940984B2 (en) * | 2007-02-14 | 2012-05-30 | トヨタ自動車株式会社 | Control device for vehicle drive device |
| JP5261758B2 (en) * | 2007-08-31 | 2013-08-14 | 本田技研工業株式会社 | Automatic transmission control device for vehicle |
| CN101417636B (en) * | 2008-03-14 | 2013-03-20 | 北京理工大学 | Pure electric motor coach communication system and method based on three CAN bus |
| CN201553048U (en) * | 2009-07-14 | 2010-08-18 | 吉林大学 | A pure electric motor coach |
| CN101870279B (en) * | 2010-03-10 | 2012-08-29 | 重庆长安汽车股份有限公司 | Method for gear information display and gear shift prompt of hybrid electric vehicle |
| CN101907167A (en) * | 2010-08-09 | 2010-12-08 | 奇瑞汽车股份有限公司 | Device and method for identifying electric motor vehicle gears with constant speed ratio |
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Application publication date: 20110713 Assignee: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Assignor: Chongqing Changan Automobile Co.,Ltd.|CHONGQING CHANG'AN NEW ENERGY AUTOMOBILE Co.,Ltd. Contract record no.: 2018500000018 Denomination of invention: Method for automatic-manual transmission gear shifting for electronic automobile Granted publication date: 20131030 License type: Exclusive License Record date: 20181121 |
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Effective date of registration: 20190108 Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Co-patentee before: CHONGQING CHANG'AN NEW ENERGY AUTOMOBILE Co.,Ltd. Patentee before: Chongqing Changan Automobile Co.,Ltd. |
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Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |