CN103158582B - Gear-shifting control method of pure electric vehicle - Google Patents

Gear-shifting control method of pure electric vehicle Download PDF

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Publication number
CN103158582B
CN103158582B CN201110427946.2A CN201110427946A CN103158582B CN 103158582 B CN103158582 B CN 103158582B CN 201110427946 A CN201110427946 A CN 201110427946A CN 103158582 B CN103158582 B CN 103158582B
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pure electric
electric automobile
gear
information
control method
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CN103158582A (en
Inventor
程琰
王圣学
张春淮
杜晓佳
闫伟
左从兵
郭齐杰
马建新
王野
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

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Abstract

The invention discloses a gear-shifting control method of a pure electric vehicle. The method includes the steps that a vehicle control unit receives gear signals and takes the gear signals as first gear information, and the gear signals are converted into low-level pulse signals and sent to a motor controller; the motor controller receives the low-level pulse signals and takes the low-level pulse signals as second gear information, whether gear-shifting conditions are met is judged according to vehicle information, and the second gear information is fed back to the vehicle control unit for gear information verification; the vehicle control unit verifies the first gear information and the second gear information and feeds back a verification result to the motor controller; and when the motor controller judges that the pure electric vehicle meets the gear-shifting conditions and the verification result indicates that the first gear information is consistent with the second gear information, a motor is driven to operate. According to the method, the motor controller judges whether the gear-shifting conditions are met according to a state of the vehicle to guarantee road safety and that over-discharge phenomena of a battery cannot occur, and verifies the gear information according to the vehicle control unit to guarantee gear shifting precision.

Description

The shift control method of pure electric automobile
Technical field
The present invention relates to pure electric automobile technical field, particularly a kind of shift control method of pure electric automobile.
Background technology
Along with improving constantly of automotive technology and people's living standard, automobile has become the main traffic instrument of people gradually.But incident is with it day by day serious problem of environmental pollution, utilizes the new-energy automobile of clean energy resource to arise at the historic moment thus.Particularly pure electric automobile becomes study hotspot gradually, supports the development of future automobile industry.
New-energy automobile and conventional fuel oil vehicle have very large difference in wagon control principle.Wherein, shift control strategy not only concerns vehicle performance, and closely bound up with traffic safety.The gearshift control of traditional new forms of energy pure electric automobile adopts different control policies according to the difference of vehicle type structure and electronics package and controller.Such as: adopt Single Controller control realization or adopt multiple controller Cooperation controlling to realize.But the gearshift control of traditional new forms of energy pure electric automobile lacks gear information feedback and verifying function, thus cannot ensure the accuracy of gearshift.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency, the shift control method of a kind of pure electric automobile of special proposition, by verification gear information, the method can ensure that gear shift is accurate, and by judging whether that satisfied gearshift condition is to guarantee that travel safety and battery there will not be overdischarge phenomenon.
For achieving the above object, embodiments of the invention propose a kind of shift control method of pure electric automobile, comprise the steps: that the entire car controller of pure electric automobile receives the gear signal of pure electric automobile as the first gear information, and described gear signal is converted to the electric machine controller that low level pulse signal is sent to described pure electric automobile; The electric machine controller of described pure electric automobile receives described low level pulse signal as the second gear information, and judge whether satisfied gearshift condition according to the whole vehicle information of described pure electric automobile, and carry out gear information verification to the entire car controller of described pure electric automobile described second gear information feed back; The entire car controller of described pure electric automobile verifies described first gear information and described second gear information, and to the electric machine controller feedback check result of described pure electric automobile; And when the electric machine controller of described pure electric automobile judge described pure electric automobile meet described gearshift condition and described check results to be described first gear information consistent with described second gear information time, drive the machine operation of described pure electric automobile.
According to the shift control method of the pure electric automobile of the embodiment of the present invention, judge whether that satisfied gearshift condition is to guarantee that travel safety and battery there will not be overdischarge phenomenon by electric machine controller according to whole vehicle state.And by entire car controller, gear information is verified, thus guarantee whole shift process safety and precise.
In one embodiment of the invention, described gear signal is Low level effective signal.
In one embodiment of the invention, filtering and stabilization process carried out to described gear signal and be converted to low level pulse signal.
In one embodiment of the invention, described low level pulse signal is sent to the electric machine controller of described pure electric automobile by the entire car controller of described pure electric automobile by physics wire harness.
In one embodiment of the invention, described whole vehicle information comprises: speed information, battery charge state information, acceleration pedal information and brake pedal information.
In one embodiment of the invention, described battery charge state information is sent to the electric machine controller of described pure electric automobile by the battery management system of described pure electric automobile by power CAN.
In one embodiment of the invention, the electric machine controller of described pure electric automobile obtains described speed information, described acceleration pedal information and described brake pedal information by physics wire harness.
In one embodiment of the invention, also comprise the steps: when the electric machine controller of described pure electric automobile judge described pure electric automobile meet described gearshift condition and described check results to be described first gear information consistent with described second gear information time, the electric machine controller of described pure electric automobile sends gearshift information to the entire car controller of described pure electric automobile, and gear indicator lamp corresponding on the selector of entire car controller pure electric automobile according to described gearshift information-driven of described pure electric automobile is lighted.
In one embodiment of the invention, current gear information is sent to the instrument of described pure electric automobile by the entire car controller of described pure electric automobile.
In one embodiment of the invention, the entire car controller of described pure electric automobile is communicated by information CAN with the instrument of described pure electric automobile.
In one embodiment of the invention, the entire car controller of described pure electric automobile is communicated by power CAN with the electric machine controller of described pure electric automobile.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the FB(flow block) of the shift control method of pure electric automobile according to the embodiment of the present invention;
Fig. 2 is the mutual schematic diagram of signal of the shift control method of pure electric automobile according to the embodiment of the present invention; And
Fig. 3 is the schematic diagram of the shift control method of pure electric automobile according to the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
Below with reference to Fig. 1 to Fig. 3, the shift control method according to the pure electric automobile of the embodiment of the present invention is described.
As shown in Figure 1, the shift control method of the pure electric automobile that the embodiment of the present invention provides, comprises the steps:
Step S101, the entire car controller of pure electric automobile receives the gear signal of pure electric automobile as the first gear information, and gear signal is converted to the electric machine controller that low level pulse signal is sent to pure electric automobile.
The selector of pure electric automobile comprises R, N, D tri-kinds of states and R, N, D tri-gear indicator lamps.By pilot control selector, entire car controller reads selector signal.Wherein, gear signal is Low level effective signal.As shown in Figure 2, when selector pushes R shelves, then entire car controller reads R shelves Low level effective signal; When selector pushes D shelves, then entire car controller reads D shelves Low level effective signal; When selector pushes N shelves, then entire car controller reads N shelves Low level effective signal.After entire car controller receives effective gear signal, using it as the first gear information.Then filtering and stabilization process are carried out to gear signal, and gear signal is converted to corresponding low level pulse signal, and this low level pulse signal is sent to electric machine controller.In one embodiment of the invention, low level pulse signal duration is 50 ~ 200ms.
In one embodiment of the invention, low level pulse signal is sent to electric machine controller by physics wire harness by entire car controller.
Particularly, when selector pushes R shelves, entire car controller reads R shelves Low level effective signal, and converts this R shelves Low level effective signal to R shelves low level pulse signal that pulsewidth is 50 ~ 200ms, then R shelves low level pulse signal is exported to electric machine controller.
When selector pushes D shelves, entire car controller reads D shelves Low level effective signal, and converts this D shelves Low level effective signal to D shelves low level pulse signal that pulsewidth is 50 ~ 200ms, then D shelves low level pulse signal is exported to electric machine controller.
When selector pushes N shelves, entire car controller reads N shelves Low level effective signal, and converts this N shelves Low level effective signal to N shelves low level pulse signal that pulsewidth is 50 ~ 200ms, then N shelves Low level effective signal is exported to electric machine controller.
Step S102, the electric machine controller of pure electric automobile receives low level pulse signal as the second gear information, and judge whether satisfied gearshift condition according to the whole vehicle information of pure electric automobile, and the second gear information feed back is carried out gear information verification to the entire car controller of pure electric automobile.
Electric machine controller receives the low level pulse signal sent by entire car controller, as the second gear information.Above-mentioned second gear information sends to entire car controller to carry out gear information verification by power CAN by electric machine controller.
Electric machine controller receives battery charge state information, speed information, acceleration pedal information and brake pedal information, then judges whether satisfied gearshift condition according to above-mentioned information.As shown in Figure 2, electric machine controller receives the battery charge state information from battery management system by power CAN, and obtains speed information, acceleration pedal information and brake pedal information by physics wire harness.
The gear pushed according to selector and above-mentioned whole vehicle information judge whether satisfied gearshift condition:
1) if selector pushes N shelves, namely N shelves signal is effective, then allow to be switched to the following condition of N shelves demand fulfillment: low-voltage power supply is normal, high-pressure closing is normal, N shelves low level pulse signal effective, R shelves signal and D shelves signal all invalid (False), acceleration pedal signal are 0, brake pedal signal is effective.
2) if selector pushes D shelves, namely D shelves signal is effective, then allow to be switched to the following shift condition of D shelves demand fulfillment: low-voltage power supply is normal, high-pressure closing is normal, temperature of powered cell is normal, monomer battery voltage is normal, the SOC SOC > 15% of electrokinetic cell, D shelves signal low level pulse effective, R shelves signal and N shelves signal is invalid (False), the speed of a motor vehicle is 0, acceleration pedal signal is 0, brake pedal signal is effective.Wherein, the speed of a motor vehicle is 0, acceleration pedal signal be 0 and brake pedal signal effective, above-mentioned three conditions must meet when being changed to D shelves by R shelves.
3) if selector pushes R shelves, namely R shelves signal is effective, then allow to be switched to the following shift condition of R shelves demand fulfillment: low-voltage power supply is normal, high-pressure closing is normal, temperature of powered cell is normal, monomer battery voltage is normal, electrokinetic cell SOC > 10%, R shelves signal low level pulse effective, D shelves signal and N shelves signal is invalid (False), the speed of a motor vehicle is 0, acceleration pedal signal is 0, brake pedal signal is effective.Wherein, the speed of a motor vehicle is 0, acceleration pedal signal be 0 and brake pedal signal effective, above-mentioned three conditions must meet when being changed to R shelves by D shelves.
Step S103, the entire car controller of pure electric automobile verifies the first gear information and the second gear information, and to the electric machine controller feedback check result of pure electric automobile.
Entire car controller receives the second gear information from electric machine controller by power CAN, then the second gear information and the first gear information is verified, and generates check results.Then check results is fed back to electric machine controller by power CAN.
Step S104, when the electric machine controller of pure electric automobile judge pure electric automobile meet gearshift condition and check results to be the first gear information consistent with the second gear information time, drive the machine operation of pure electric automobile.
Electric machine controller receives the check results from entire car controller.If check results shows that the first gear information is consistent with the second gear information and pure electric automobile meets gearshift condition, then electric machine controller exports corresponding tach signal and torque signal with drive motor action.If check results shows the first gear information and the second gear information is inconsistent, then terminate shift process.
In one embodiment of the invention, gearshift information, after drive motor action, is sent to entire car controller further by power CAN by electric machine controller.Entire car controller is lighted to drive gear indicator lamp corresponding on selector according to the indicator lamp transmission indicator lamp signal of above-mentioned gearshift information to the respective notch on selector.Further, current gear information is sent to the instrument of pure electric automobile by entire car controller by information CAN, shows current gear information by instrument.
Below with reference to Fig. 3, the shift process of pure electric automobile is described in detail.
Step S301, entire car controller reads gear information.
Entire car controller reads gear signal, as the first gear information.
Step S302, is converted to low level pulse signal by gear signal, and low level pulse signal is sent to electric machine controller.
Entire car controller carries out filtering and stabilization process to gear signal, and gear signal is converted to corresponding low level pulse signal, and this low level pulse signal is sent to electric machine controller.
Step S303, electric machine controller judges whether to allow gearshift, and ought the second gear information send to entire car controller to verify.
Electric machine controller receives the low level pulse signal sent by entire car controller, as the second gear information, then sends to entire car controller to carry out gear information verification above-mentioned second gear information by power CAN.
Step S304, judges whether satisfied gearshift condition, if met, then performs step S306, otherwise performs step S305.
According to whole vehicle information, electric machine controller judges whether car load meets gearshift condition.Wherein, whole vehicle information comprises speed information, battery charge state information, acceleration pedal information and brake pedal information.If meet gearshift condition, perform step S306, otherwise perform step S305.
Step S305, electric machine controller sends " shifting gears unsuccessful " signal to entire car controller.
If electric machine controller judges not meet gearshift condition, then send " shifting gears unsuccessful " signal to entire car controller, terminate gear shifting action.
Step S306, entire car controller judges that whether the first gear information is consistent with the second gear information, if unanimously, then performs step S308, otherwise performs step S307.
Step S307, entire car controller sends " verify inconsistent, can not shift gears " signal to electric machine controller.
If entire car controller judge the first gear information and the second gear information checking inconsistent, then to electric machine controller send " verify inconsistent, can not shift gears " signal, terminate shift process.
Step S308, entire car controller sends verification acknowledgment signal to electric machine controller.
If entire car controller judges that the first gear information is consistent with the second gear information, then send verification acknowledgment signal to electric machine controller.
Step S309, the action of electric machine controller drive motor, and send gearshift information to entire car controller by power CAN.
Step S310, entire car controller drives the gear indicator lamp electric current on selector, and sends gear information to instrument by information CAN.
Entire car controller is lighted to drive gear indicator lamp corresponding on selector according to the indicator lamp transmission indicator lamp signal of gearshift information to the respective notch on selector.And by information CAN, current gear information is sent to the instrument of pure electric automobile, show current gear information by instrument.
According to the shift control method of the pure electric automobile of the embodiment of the present invention, judge whether that satisfied gearshift condition is to guarantee that travel safety and battery there will not be overdischarge phenomenon by electric machine controller according to whole vehicle state.And by entire car controller, gear information is verified, thus guarantee whole shift process safety and precise.
Describe and can be understood in diagram of circuit or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of treater or other can from instruction execution system, device or equipment fetch instruction and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this specification sheets, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronics package) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only memory (ROM) (ROM), erasablely edit read-only memory (ROM) (EPROM or flash memory), fiber device, and portable optic disk read-only memory (ROM) (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanning to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinatory logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory (ROM), disk or CD etc.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.

Claims (11)

1. a shift control method for pure electric automobile, is characterized in that, comprises the steps:
The entire car controller of pure electric automobile receives the gear signal of pure electric automobile as the first gear information, and described gear signal is converted to the electric machine controller that low level pulse signal is sent to described pure electric automobile;
The electric machine controller of described pure electric automobile receives described low level pulse signal as the second gear information, and judge whether satisfied gearshift condition according to the whole vehicle information of described second gear information and described pure electric automobile, and carry out gear information verification to the entire car controller of described pure electric automobile described second gear information feed back;
The entire car controller of described pure electric automobile verifies described first gear information and described second gear information, and to the electric machine controller feedback check result of described pure electric automobile; And
When the electric machine controller of described pure electric automobile judge described pure electric automobile meet described gearshift condition and described check results to be described first gear information consistent with described second gear information time, drive the machine operation of described pure electric automobile.
2. the shift control method of pure electric automobile as claimed in claim 1, it is characterized in that, described gear signal is Low level effective signal.
3. the shift control method of pure electric automobile as claimed in claim 1, is characterized in that, carries out filtering and stabilization process to be converted to low level pulse signal to described gear signal.
4. the shift control method of pure electric automobile as claimed in claim 1, it is characterized in that, described low level pulse signal is sent to the electric machine controller of described pure electric automobile by the entire car controller of described pure electric automobile by physics wire harness.
5. the shift control method of pure electric automobile as claimed in claim 1, it is characterized in that, described whole vehicle information comprises: speed information, battery charge state information, acceleration pedal information and brake pedal information.
6. the shift control method of pure electric automobile as claimed in claim 5, it is characterized in that, described battery charge state information is sent to the electric machine controller of described pure electric automobile by the battery management system of described pure electric automobile by power CAN.
7. the shift control method of pure electric automobile as claimed in claim 5, it is characterized in that, the electric machine controller of described pure electric automobile obtains described speed information, described acceleration pedal information and described brake pedal information by physics wire harness.
8. the shift control method of pure electric automobile as claimed in claim 1, it is characterized in that, also comprise the steps: when the electric machine controller of described pure electric automobile judge described pure electric automobile meet described gearshift condition and described check results to be described first gear information consistent with described second gear information time, the electric machine controller of described pure electric automobile sends gearshift information to the entire car controller of described pure electric automobile, gear indicator lamp corresponding on the selector of entire car controller pure electric automobile according to described gearshift information-driven of described pure electric automobile is lighted.
9. the shift control method of pure electric automobile as claimed in claim 8, it is characterized in that, current gear information is sent to the instrument of described pure electric automobile by the entire car controller of described pure electric automobile.
10. the shift control method of pure electric automobile as claimed in claim 9, it is characterized in that, the entire car controller of described pure electric automobile is communicated by information CAN with the instrument of described pure electric automobile.
The shift control method of 11. pure electric automobiles as claimed in claim 1, it is characterized in that, the entire car controller of described pure electric automobile is communicated by power CAN with the electric machine controller of described pure electric automobile.
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CN105313896B (en) * 2014-06-18 2018-03-27 北京现代汽车有限公司 A kind of control method and device of automobile gears management
CN104776214B (en) * 2015-04-02 2017-06-09 河南承信齿轮传动有限公司 Pure electric automobile two keeps off automatic mechanical transmission shifting control system and its control method
CN105196890B (en) * 2015-09-16 2017-10-31 徐州科亚机电有限公司 A kind of shift integral controller and control system
CN107128210B (en) * 2016-02-29 2019-07-02 陕西汽车集团有限责任公司 Pure electric vehicle whole-control system containing two-shift automatic variable speed
CN109987040B (en) * 2019-03-26 2020-02-18 武汉理工大学 Automobile gear shifting signal identification method and device
CN111994035A (en) * 2019-05-10 2020-11-27 广州汽车集团股份有限公司 Gear shifting control method, device and system for unmanned vehicle and unmanned vehicle
CN112344013B (en) * 2020-11-05 2022-04-08 东风汽车股份有限公司 Gear shifting control system and control method for pure electric commercial vehicle

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