CN103587527A - Gear shift control method of full-electric vehicle with AMT (automated mechanical transmission) - Google Patents
Gear shift control method of full-electric vehicle with AMT (automated mechanical transmission) Download PDFInfo
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- CN103587527A CN103587527A CN201210291622.5A CN201210291622A CN103587527A CN 103587527 A CN103587527 A CN 103587527A CN 201210291622 A CN201210291622 A CN 201210291622A CN 103587527 A CN103587527 A CN 103587527A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000009347 mechanical transmission Effects 0.000 title 1
- 230000008859 change Effects 0.000 claims description 23
- 230000007935 neutral effect Effects 0.000 claims description 13
- 230000000630 rising effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 21
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000033228 biological regulation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a gear shift control method of a full-electric vehicle with an AMT. The method includes that during gear shift, firstly, the torque of a motor is decreased to zero and then torque in the opposite direction is generated to achieve speed adjustment; then after the gear shift is successfully performed, the torque of the motor is increased to a set value. According to the gear shift control method of the full-electric vehicle with the AMT, during the gear shift, the speed adjustment process of the motor is controlled reasonably, so that the gear shift can be rapid and stable, the vehicle impact during the conjunction process can be reduced and the driving comfort can be enhanced.
Description
Technical field
The present invention relates to field of automobile, particularly relate to a kind of shift control method of the pure electric automobile with AMT change speed gear box.
Background technology
Environmental pollution, energy shortage are two hang-ups of current auto-industry Faced In Sustainable Development, are also two large bottlenecks of Global Auto industry development.The energy consumption of the vehicle accounts for 40% of world's total energy consumption, and the energy-output ratio of automobile accounts for 1/4, and in the face of the immense pressure of energy-conservation and environmental protection, various countries require more and more stricter to automotive emissions.The dependence of minimizing to the energy, realizes energy-saving and emission-reduction, has become world economy sustainable development problem in the urgent need to address.Therefore, pure electric automobile has become the trend of current auto-domain development.Pure electric automobile replaces with motor by traditional combustion engine, with heavy-duty battery, for it, provides the energy, and can realize discharge is zero, pollution-free, is the first-selected trend of current Ge great car company development.
Fig. 1 shows a kind of technical scheme of existing pure electric automobile, wherein, and 1-liquid crystal display terminal, 2-electric machine controller, 3-motor, 4-AMT Automatic Transmission, 5-entire car controller, 6-AMT controller, 7-power battery pack, 8-charger, 9-battery management system.
As shown in Figure 1, the propulsion source of pure electric automobile is motor 3, entire car controller 5(VMS) be the core that car load is controlled, main be responsible for coordinating battery management system 9(BMS) and electric machine controller 2(MCU) between control, and and AMT controller 6(TCU) moment of torsion is coordinated, to realize driving performance and the energy optimization that vehicle is good.
Wherein, it is one of gordian technique that the gearshift of AMT Automatic Transmission 4 is controlled in pure electric automobile field, and it is also making constant progress.In the AMT of pure electric automobile Automatic Transmission 4 shift processes, by motor 3, control gearshift speed regulation process, because motor 3 speed of response are very fast, it is short that moment of torsion arrives the expected value time, be easy to cause the impact of vehicle very large, need rationally to regulate the variation of moment of torsion in motor 3 speed regulation processes, Optimal Control Strategy is extremely important for solving shock problem.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention is to propose a kind of pure electric automobile with AMT change speed gear box in shift process, rationally control Speed Process of DC Motor, make gearshift quick steadily, reduce car impact in engaging process, improve the shift control method of the pure electric automobile with AMT change speed gear box of the traveling comfort of driving.
According to the shift control method of the pure electric automobile with AMT change speed gear box of the embodiment of the present invention, described pure electric automobile comprises entire car controller and the AMT gearbox control and the electric machine controller that are connected with entire car controller respectively, comprises the following steps: a) described entire car controller judges whether to receive gear shifting signal; B), when described entire car controller is received gear shifting signal, described entire car controller sends and makes the moment of torsion of motor reduce to 0 signal to described electric machine controller; C), when the moment of torsion of described motor reduces to 0, described entire car controller sends and makes synchro move to the signal of neutral to described AMT gearbox control; D), when described synchro moves to neutral, described entire car controller sends and makes the signal of described motor generation reactive torque to carry out speed governing to described electric machine controller; E) when described motor completes speed governing, described entire car controller sends and makes the moment of torsion of described motor become 0 signal to described electric machine controller, then, described entire car controller sends and makes described synchro from neutral, move to the signal of target gear locking to described AMT gearbox control; And f), when described synchro moves to target gear and locks from neutral, described entire car controller sends the signal of the moment of torsion rising that makes described motor to described electric machine controller.
According to the shift control method of the pure electric automobile with AMT change speed gear box of the embodiment of the present invention, after predetermined gearshift condition meets, AMT change speed gear box starts gearshift.In the process of AMT gearbox shifting, the moment of torsion of motor reduced before this, after Motor torque drops to zero, produced reversing sense moment of torsion and carried out speed governing.After shifting gears successfully, the moment of torsion of motor rises, until setting value.By adopting according to the shift control method of the pure electric automobile with AMT change speed gear box of the embodiment of the present invention, make the car impact in AMT gearbox shifting process little, driver comfort is good.By reasonable control Motor torque, make moment of torsion recover smooth-going.
In addition, the shift control method of the pure electric automobile with AMT change speed gear box according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, described gear shifting signal comprises and adds gear signal and subtract gear signal.
According to one embodiment of present invention, the moment of torsion of described motor is smooth curve rising.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the schematic diagram of a kind of electronlmobil of the prior art;
Fig. 2 is the shift control method schematic flow sheet of the pure electric automobile with AMT change speed gear box according to an embodiment of the invention; With
Fig. 3 adopts the shift control method of the electronlmobil with AMT change speed gear box according to an embodiment of the invention to carry out time dependent curve synoptic diagram in shift process;
Wherein, in Fig. 3, a represents target gear curve, and b represents speed of a motor vehicle curve, and c represents actual gear curve, and d represents motor speed curve, and e represents Motor torque curve, and f represents master mode curve, and I represents 1 gear, and II represents 2 gears.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " cw ", orientation or the position relationship of indications such as " conter clockwises " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
Below with reference to accompanying drawing, describe in detail according to the shift control method of the pure electric automobile with AMT change speed gear box of the embodiment of the present invention.
As shown in Figures 2 and 3, according to the shift control method of a kind of pure electric automobile with AMT change speed gear box of the embodiment of the present invention, pure electric automobile comprises entire car controller and the AMT gearbox control and the electric machine controller that are connected with entire car controller respectively.
Specifically, described shift control method comprises the following steps:
A) described entire car controller judges whether to receive gear shifting signal.
B), when described entire car controller is received gear shifting signal, described entire car controller sends and makes the moment of torsion of motor reduce to 0 signal to described electric machine controller.
C), when the moment of torsion of described motor reduces to 0, described entire car controller sends and makes synchro move to the signal of neutral to described AMT gearbox control.
D), when described synchro moves to neutral, described entire car controller sends and makes the signal of described motor generation reactive torque to carry out speed governing to described electric machine controller.
E) when described motor completes speed governing, described entire car controller sends and makes the moment of torsion of described motor become 0 signal to described electric machine controller, then, described entire car controller sends and makes described synchro from neutral, move to the signal of target gear locking to described AMT gearbox control.
F), when described synchro moves to target gear and locks from neutral, described entire car controller sends the signal of the moment of torsion rising that makes described motor to described electric machine controller.
According to the shift control method of the pure electric automobile with AMT change speed gear box of the embodiment of the present invention, after predetermined gearshift condition meets, AMT change speed gear box starts gearshift.In the process of AMT gearbox shifting, the moment of torsion of motor reduced before this, after Motor torque drops to zero, produced reversing sense moment of torsion and carried out speed governing.After shifting gears successfully, the moment of torsion of motor rises, until setting value.By adopting according to the shift control method of the pure electric automobile with AMT change speed gear box of the embodiment of the present invention, make the car impact in AMT gearbox shifting process little, driver comfort is good.By reasonable control Motor torque, make moment of torsion recover smooth-going.The reasonable Speed Process of DC Motor of controlling, makes gearshift steadily quick, reduces the car impact in engaging process, the traveling comfort that raising is driven.
Advantageously, according to one embodiment of present invention, described gear shifting signal comprises and adds gear signal and subtract gear signal.Thus, can further improve the traveling comfort of vehicular drive.
Advantageously, according to some embodiments of the present invention, the moment of torsion of described motor is smooth curve and rises.Thus, further reduce the impact to vehicle in shift process.
Below with reference to accompanying drawing 3, sketch the process of shifting gears according to the shift control method of the pure electric automobile with AMT change speed gear box of the present invention that adopts.
First it should be noted that, under EV pattern, the optimization of gear shift is important commissioning content.Entire car controller and AMT gearbox control need good coordinated torque, just can make gear shift normally carry out, and shifting shock are little.Gear be take two gears as example.
(1) when the speed of a motor vehicle increases gradually, when vehicle meets 1 grade while rising 2 grades of while accelerating (be car load needs) conditions, AMT gearbox control master mode becomes the 2(master mode curve f when the t0 as shown in Figure 3 from 0), now to receive AMT gearbox control master mode be not 0 signal to entire car controller, and to motor, send a moment of torsion and reduce to 0 instruction.When t0, motor is received instruction and is reduced moment of torsion (as shown in Figure 3, Motor torque curve e reduces to 0 when t0, and the peak value of motor speed curve d before t0 becomes the progressively decline after t0).
(2) when t1, Motor torque is 0, and now AMT gearbox control starts control synchro and moves to neutral gear position.
(3) during t1-t2, be the electric machine speed regulation stage.AMT gearbox control master mode becomes 1 from 2.In gearshift procedure, the speed governing change in torque of motor is larger, in speed-regulating mode, by regulating motor to produce reciprocal moment of torsion, carrys out speed governing.As shown in Figure 3, during t1-t2, Motor torque curve e first declines and rises afterwards, and the rotating speed of motor further reduces (as shown in motor speed curve d).
(4) when t2, electric machine speed regulation completes.AMT gearbox control sends Free Mode(free schema to motor), the target torque of motor becomes 0.At t2-t3, be the gearshift stage, synchro starts mobile, until move on to target gear and pin.
(5) shift gears successfully during t3, gear is upgraded to 2 grades by 1 grade.Synchro moves on to behind position, and it is 0 signal that AMT gearbox control sends master mode to entire car controller.Entire car controller receives after signal, does the operation that moment of torsion recovers, and the moment of torsion that entire car controller is issued motor is the variation of rising.As shown in Figure 3, by t3, started, master mode curve f is 0, and actual gear curve c overlaps with target gear curve a, and Motor torque curve e rises gradually by 0, and motor speed curve d rises gradually by 0, and speed of a motor vehicle curve b starts to rise.Car load completes upshift speed-raising.
When understandable, when the speed of a motor vehicle slows down gradually, when vehicle meets 2 grades while falling 1 grade of condition, in shift process, also can make the moment of torsion of motor first reduce, after Motor torque drops to zero, produce reversing sense moment of torsion and carry out speed governing.After shifting gears successfully, the moment of torsion of motor rises until setting value.Do not repeat them here.
According to the shift control method of the pure electric automobile with AMT change speed gear box of the embodiment of the present invention, in shift process, rationally control Speed Process of DC Motor, make gearshift steadily quick, reduce the car impact in engaging process, the traveling comfort that raising is driven.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (3)
1. with a shift control method for the pure electric automobile of AMT change speed gear box, described pure electric automobile comprises entire car controller and the AMT gearbox control and the electric machine controller that are connected with entire car controller respectively, it is characterized in that, comprises the following steps:
A) described entire car controller judges whether to receive gear shifting signal;
B), when described entire car controller is received gear shifting signal, described entire car controller sends and makes the moment of torsion of motor reduce to 0 signal to described electric machine controller;
C), when the moment of torsion of described motor reduces to 0, described entire car controller sends and makes synchro move to the signal of neutral to described AMT gearbox control;
D), when described synchro moves to neutral, described entire car controller sends and makes the signal of described motor generation reactive torque to carry out speed governing to described electric machine controller;
E) when described motor completes speed governing, described entire car controller sends and makes the moment of torsion of described motor become 0 signal to described electric machine controller, then, described entire car controller sends and makes described synchro from neutral, move to the signal of target gear locking to described AMT gearbox control; With
F), when described synchro moves to target gear and locks from neutral, described entire car controller sends the signal of the moment of torsion rising that makes described motor to described electric machine controller.
2. the shift control method of the pure electric automobile with AMT change speed gear box according to claim 1, is characterized in that, described gear shifting signal comprises and adds gear signal and subtract gear signal.
3. the shift control method of the pure electric automobile with AMT change speed gear box according to claim 1, is characterized in that, the moment of torsion of described motor is smooth curve and rises.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210291622.5A CN103587527A (en) | 2012-08-15 | 2012-08-15 | Gear shift control method of full-electric vehicle with AMT (automated mechanical transmission) |
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| CN201210291622.5A CN103587527A (en) | 2012-08-15 | 2012-08-15 | Gear shift control method of full-electric vehicle with AMT (automated mechanical transmission) |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608769A (en) * | 2014-10-20 | 2015-05-13 | 比亚迪股份有限公司 | Gear-shifting control method for electric automobile and motor speed adjusting method based on gear-shifting |
| CN104728422A (en) * | 2015-03-23 | 2015-06-24 | 山东理工大学 | Electric vehicle gear-shifting control method and system |
| CN104828092A (en) * | 2014-04-10 | 2015-08-12 | 北汽福田汽车股份有限公司 | Shifting method and shifting system of hybrid electric vehicle |
| CN105270387A (en) * | 2015-11-04 | 2016-01-27 | 东风商用车有限公司 | Gear shifting control method of hybrid power vehicle with AMT |
| CN106080155A (en) * | 2016-06-28 | 2016-11-09 | 泰州市海博汽车科技有限公司 | A kind of optimization integrated system driving motor and automatic transmission and shift control method |
| CN106926747A (en) * | 2017-02-15 | 2017-07-07 | 同济大学 | Pure electric automobile shifting control system based on no-clutch two-shift automatic speed variator |
| CN107599891A (en) * | 2017-08-31 | 2018-01-19 | 北京新能源汽车股份有限公司 | Gear shifting method and device |
| CN108394412A (en) * | 2018-04-25 | 2018-08-14 | 吉利汽车研究院（宁波）有限公司 | A kind of shifting control system and method for hybrid vehicle |
| CN109595306A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | A kind of transmission system and its process for gear |
| CN110296186A (en) * | 2019-06-24 | 2019-10-01 | 山推工程机械股份有限公司 | One kind two keeps off pure electric vehicle speed change system, pure electric vehicle engineering truck and its control method |
| CN110901644A (en) * | 2019-11-22 | 2020-03-24 | 东风商用车有限公司 | Gear shifting control method for AMT (automated mechanical transmission) steep slope of electric automobile |
| CN111102350A (en) * | 2018-10-26 | 2020-05-05 | 上海汽车集团股份有限公司 | Method and device for controlling rotating speed of power source in vehicle gear shifting process |
| CN111503259A (en) * | 2020-04-02 | 2020-08-07 | 菲仕绿能科技(宁波)有限公司 | Method for eliminating impact of vehicle gear shifting gear |
| CN114165584A (en) * | 2021-11-05 | 2022-03-11 | 潍柴动力股份有限公司 | AMT gearbox, gear shifting control method and device of AMT gearbox and medium |
| CN114483945A (en) * | 2022-02-17 | 2022-05-13 | 一汽解放汽车有限公司 | AMT dynamic gear shifting control method for pure electric vehicle |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828092A (en) * | 2014-04-10 | 2015-08-12 | 北汽福田汽车股份有限公司 | Shifting method and shifting system of hybrid electric vehicle |
| CN104828092B (en) * | 2014-04-10 | 2019-01-25 | 北汽福田汽车股份有限公司 | The process for gear and system of hybrid vehicle |
| CN104608769A (en) * | 2014-10-20 | 2015-05-13 | 比亚迪股份有限公司 | Gear-shifting control method for electric automobile and motor speed adjusting method based on gear-shifting |
| CN104608769B (en) * | 2014-10-20 | 2016-04-13 | 比亚迪股份有限公司 | The shift control method of electronlmobil and the motor speed control method based on gearshift |
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| CN106080155A (en) * | 2016-06-28 | 2016-11-09 | 泰州市海博汽车科技有限公司 | A kind of optimization integrated system driving motor and automatic transmission and shift control method |
| CN106926747A (en) * | 2017-02-15 | 2017-07-07 | 同济大学 | Pure electric automobile shifting control system based on no-clutch two-shift automatic speed variator |
| CN106926747B (en) * | 2017-02-15 | 2019-07-05 | 同济大学 | Pure electric automobile shifting control system based on no-clutch two-speed automatic transmission |
| CN107599891A (en) * | 2017-08-31 | 2018-01-19 | 北京新能源汽车股份有限公司 | Gear shifting method and device |
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Application publication date: 20140219 |