CN103158582A - Gear-shifting control method of pure electric vehicle - Google Patents
Gear-shifting control method of pure electric vehicle Download PDFInfo
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- CN103158582A CN103158582A CN2011104279462A CN201110427946A CN103158582A CN 103158582 A CN103158582 A CN 103158582A CN 2011104279462 A CN2011104279462 A CN 2011104279462A CN 201110427946 A CN201110427946 A CN 201110427946A CN 103158582 A CN103158582 A CN 103158582A
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- 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 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
Technical field
The present invention relates to the 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 people's main traffic instrument gradually.But incident with it is day by day serious problem of environmental pollution, utilizes thus the new-energy automobile of clean energy resource to arise at the historic moment.Particularly pure electric automobile becomes study hotspot gradually, supports the development of future automobile industry.
New-energy automobile and traditional fuel combustion vehicle are having very large difference aspect the vehicle control principle.Wherein, shift control strategy not only concerns vehicle performance, and closely bound up with traffic safety.The difference that the gear shift of traditional new forms of energy pure electric automobile is controlled according to vehicle type structure and electronics package and controller adopts different control policies.For example: adopt Single Controller to control and realize or adopt a plurality of controller cooperations to control and realize.But the gear shift of traditional new forms of energy pure electric automobile is controlled and is lacked gear information feedback and verifying function, thereby can't guarantee the accuracy of shifting gears.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, the special shift control method that proposes a kind of pure electric automobile, the method can guarantee that gear shift is accurate by the verification gear information, and by judging whether that satisfying the gearshift condition the overdischarge phenomenon can not occur to guarantee travel safety and battery.
For achieving the above object, embodiments of the invention propose a kind of shift control method of pure electric automobile, comprise the steps: gear signal that the entire car controller of pure electric automobile receives pure electric automobile as the first gear information, and described gear signal is converted to the electric machine controller that the 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 to satisfy the gearshift condition according to the car load information of described pure electric automobile, and the entire car controller that described the second gear information feeds back to described pure electric automobile is carried out the gear information verification; The entire car controller of described pure electric automobile carries out verification to described the first gear information and described the second gear information, and to the electric machine controller feedback check result of described pure electric automobile; And when the described pure electric automobile of the electric machine controller of described pure electric automobile judgement to satisfy described gearshift condition and described check results be described the first gear information when consistent, drives the machine operation of described pure electric automobile with described the second gear information.
Shift control method according to the pure electric automobile of the embodiment of the present invention judges whether to satisfy the gearshift condition by electric machine controller according to whole vehicle state and the overdischarge phenomenon can not occur to guarantee travel safety and battery.And by entire car controller, gear information is carried out verification, thereby guarantee whole shift process safety and precise.
In one embodiment of the invention, described gear signal is the Low level effective signal.
In one embodiment of the invention, described gear signal is carried out filtering and anti-shake processing and is converted to the low level pulse signal.
In one embodiment of the invention, the entire car controller of described pure electric automobile is sent to described low level pulse signal by the physics wire harness electric machine controller of described pure electric automobile.
In one embodiment of the invention, described car load information comprises: speed information, battery charge state information, acceleration pedal information and brake pedal information.
In one embodiment of the invention, the battery management system of described pure electric automobile sends to described battery charge state information by power CAN bus the electric machine controller of described pure electric automobile.
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 the physics wire harness.
In one embodiment of the invention, also comprise the steps: when the described pure electric automobile of the electric machine controller of described pure electric automobile judgement to satisfy described gearshift condition and described check results be described the first gear information with described the second gear information when consistent, the electric machine controller of described pure electric automobile sends gearshift information to the entire car controller of described pure electric automobile, and the entire car controller of described pure electric automobile is lighted according to gear indicator lamp corresponding on the selector of the described pure electric automobile of described gearshift information-driven.
In one embodiment of the invention, the entire car controller of described pure electric automobile sends to current gear information the instrument of described pure electric automobile.
In one embodiment of the invention, the instrument of the entire car controller of described pure electric automobile and described pure electric automobile communicates by information CAN bus.
In one embodiment of the invention, the electric machine controller of the entire car controller of described pure electric automobile and described pure electric automobile communicates by power CAN bus.
The aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Fig. 1 is the FB(flow block) according to the shift control method of the pure electric automobile of the embodiment of the present invention;
Fig. 2 is schematic diagram mutual according to the signal of the shift control method of the pure electric automobile of the embodiment of the present invention; And
Fig. 3 is the schematic diagram according to the shift control method of the pure electric automobile of the embodiment of the present invention.
The specific embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
With reference to following description and accompanying drawing, these and other aspects of embodiments of the invention will be known.These describe and accompanying drawing in, specifically disclose some specific implementations in embodiments of the invention, represent to implement some modes of the principle of embodiments of the invention, still should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise spirit and interior all changes, modification and the equivalent of intension scope that falls into additional claims.
Below with reference to the shift control method of Fig. 1 to Fig. 3 description according to the pure electric automobile of the embodiment of the present invention.
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 receive the gear signal of pure electric automobile as the first gear information, and gear signal is converted to the electric machine controller that the low level pulse signal is sent to pure electric automobile.
The selector of pure electric automobile comprises R, N, three kinds of states of D and R, N, three gear indicator lamps of D.By the pilot control selector, entire car controller reads the selector signal.Wherein, gear signal is the Low level effective signal.As shown in Figure 2, when selector pushed the R shelves, entire car controller read R shelves Low level effective signal; When selector pushed the D shelves, entire car controller read D shelves Low level effective signal; When selector pushed the N shelves, entire car controller read N shelves Low level effective signal.After entire car controller receives effective gear signal, with it as the first gear information.Then gear signal is carried out filtering and anti-shake processing, 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, entire car controller sends to electric machine controller by the physics wire harness with the low level pulse signal.
Particularly, when selector pushes the 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 pushed the D shelves, entire car controller read D shelves Low level effective signal, and converted 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 was exported to electric machine controller.
When selector pushed the N shelves, entire car controller read N shelves Low level effective signal, and converted 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 was exported to electric machine controller.
Step S102, the electric machine controller of pure electric automobile receives the low level pulse signal as the second gear information, and judge whether to satisfy the gearshift condition according to the car load information of pure electric automobile, and the entire car controller that the second gear information feeds back to pure electric automobile is carried out the gear information verification.
Electric machine controller receives the low level pulse signal that is sent by entire car controller, as the second gear information.Electric machine controller sends to entire car controller to carry out the gear information verification above-mentioned the second gear information by power CAN bus.
Electric machine controller receives battery charge state information, speed information, acceleration pedal information and brake pedal information, then judges whether to satisfy the gearshift condition according to above-mentioned information.As shown in Figure 2, electric machine controller passes through the reception of power CAN bus from the battery charge state information of battery management system, and obtains speed information, acceleration pedal information and brake pedal information by the physics wire harness.
The gear and the above-mentioned car load information that push according to selector judge whether to satisfy the gearshift condition:
1) if selector pushes the N shelves, be that N shelves signal is effective, allowing to switch to the N shelves need to meet the following conditions: low-voltage power supply is normal, high-pressure closing is normal, N shelves low level pulse signal effectively, all invalid (False), acceleration pedal signal are 0, the brake pedal signal is effective for R shelves signal and D shelves signal.
2) if selector pushes the D shelves, be that D shelves signal is effective, allow to switch to the D shelves and need to satisfy following shift condition: low-voltage power supply is normal, high-pressure closing is normal, temperature of powered cell is normal, monomer battery voltage is normal, the state-of-charge value SOC of electrokinetic cell＞15%, D shelves signal low level pulse effectively, R shelves signal and N shelves signal be that invalid (False), the speed of a motor vehicle are 0, the acceleration pedal signal is 0, the brake pedal signal is effective.Wherein, the speed of a motor vehicle is 0, the acceleration pedal signal be 0 and the brake pedal signal effective, above-mentioned three conditions must satisfy when changing to the D shelves by the R shelves.
3) if selector pushes the R shelves, be that R shelves signal is effective, allow to switch to the R shelves and need to satisfy following shift condition: 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 effectively, D shelves signal and N shelves signal be that invalid (False), the speed of a motor vehicle are 0, the acceleration pedal signal is 0, the brake pedal signal is effective.Wherein, the speed of a motor vehicle is 0, the acceleration pedal signal be 0 and the brake pedal signal effective, above-mentioned three conditions must satisfy when changing to the R shelves by the D shelves.
Step S103, the entire car controller of pure electric automobile carries out verification to the first gear information and the second gear information, and to the electric machine controller feedback check result of pure electric automobile.
Then entire car controller carries out verification with the second gear information and the first gear information by second gear information of power CAN bus reception from electric machine controller, generates check results.Then check results is fed back to electric machine controller by power CAN bus.
Step S104, to satisfy gearshift condition and check results be the first gear information when consistent, drives the machine operation of pure electric automobile with the second gear information when the electric machine controller of pure electric automobile judgement pure electric automobile.
Electric machine controller receives the check results from entire car controller.If check results demonstration the first gear information is consistent with the second gear information and pure electric automobile satisfies the gearshift condition, the electric machine controller corresponding tach signal of output and torque signal move with drive motor.If check results shows the first gear information and the second gear information inconsistency, finish shift process.
In one embodiment of the invention, electric machine controller further sends to entire car controller by power CAN bus with gearshift information after the drive motor action.The indicator lamp of entire car controller respective notch on the selector according to above-mentioned gearshift information sends the indicator lamp signal and lights to drive gear indicator lamp corresponding on selector.And entire car controller sends to current gear information the instrument of pure electric automobile by information CAN bus, 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 the low level pulse signal with gear signal, and the low level pulse signal is sent to electric machine controller.
Entire car controller carries out filtering and anti-shake processing 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 judge whether to allow gearshift, and ought the second gear information send to entire car controller to carry out verification.
Electric machine controller receives the low level pulse signal that is sent by entire car controller, as the second gear information, then sends to entire car controller to carry out the gear information verification above-mentioned the second gear information by power CAN bus.
Step S304 judges whether to satisfy the gearshift condition, if satisfy, and execution in step S306, otherwise execution in step S305.
Electric machine controller judges according to car load information whether car load satisfies the gearshift condition.Wherein, car load information comprises speed information, battery charge state information, acceleration pedal information and brake pedal information.If satisfy the gearshift condition execution in step S306, otherwise execution in step S305.
Step S305, electric machine controller send " shifting gears unsuccessful " signal to entire car controller.
If the gearshift condition is not satisfied in the electric machine controller judgement, send " shifting gears unsuccessful " signal to entire car controller, finish the gearshift action.
Step S306, entire car controller judge whether the first gear information is consistent with the second gear information, if consistent, execution in step S308, otherwise execution in step S307.
Step S307, entire car controller send " verification is inconsistent, can not shift gears " signal to electric machine controller.
If entire car controller judgement the first gear information and the second gear information checking are inconsistent, send " verification is inconsistent, can not shift gears " signal to electric machine controller, finish shift process.
Step S308, entire car controller send the verification acknowledgment signal to electric machine controller.
If entire car controller judgement the first gear information is consistent with the second gear information, send the 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 bus.
Step S310, entire car controller drives the gear indicator lamp electric current on selector, and sends gear information to instrument by information CAN bus.
The indicator lamp of entire car controller respective notch on the selector according to gearshift information sends the indicator lamp signal and lights to drive gear indicator lamp corresponding on selector.And current gear information is sent to the instrument of pure electric automobile by information CAN bus, show current gear information by instrument.
Shift control method according to the pure electric automobile of the embodiment of the present invention judges whether to satisfy the gearshift condition by electric machine controller according to whole vehicle state and the overdischarge phenomenon can not occur to guarantee travel safety and battery.And by entire car controller, gear information is carried out verification, thereby guarantee whole shift process safety and precise.
Describe and to be understood in diagram of circuit or in this any process of otherwise describing or method, expression comprises module, fragment or the part of code of the executable instruction of the step that one or more is used to realize specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by opposite order, carry out function, this should be understood by the embodiments of the invention person of ordinary skill in the field.
In diagram of circuit the expression or in this logic of otherwise describing and/or step, for example, can be considered to the sequencing list be used to the executable instruction that realizes logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (as the computer based system, comprise that the system of treater or other can and carry out the system of instruction from instruction execution system, device or equipment fetch instruction), or use in conjunction with these instruction execution systems, device or equipment.With regard to this specification sheets, " computer-readable medium " can be anyly can comprise, storage, communication, propagation or transmission procedure be 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 of computer-readable medium (non-exhaustive list) comprises following: the electrical connection section (electronics package) with one or more wirings, portable computer diskette box (magnetic device), random access memory (RAM), read-only memory (ROM) (ROM), the erasable read-only memory (ROM) (EPROM or flash memory) of editing, fiber device, and portable optic disk read-only memory (ROM) (CDROM).In addition, computer-readable medium can be even paper or other the suitable medium that can print described program thereon, because can be for example by paper or other media be carried out optical scanning, then edit, decipher or process in the electronics mode with other suitable methods in case of necessity and obtain described program, then it is 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, a plurality of steps or method can realize with being stored in memory device and by software or firmware that suitable instruction execution system is carried out.For example, if realize with hardware, the same in another embodiment, can realize with any one in following technology well known in the art or their combination: have for data-signal being realized the discrete logic of the logic gates of logic function, special IC with suitable combinatory logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that and realize that all or part of step that above-described embodiment method is carried is to come the relevant hardware of instruction to complete by program, described program can be stored in a kind of computer-readable recording medium, this program comprises step of embodiment of the method one or a combination set of when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory (ROM), disk or CD etc.
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 characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (11)
1. the shift control method of a 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 the 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 to satisfy the gearshift condition according to the car load information of described pure electric automobile, and the entire car controller that described the second gear information feeds back to described pure electric automobile is carried out the gear information verification;
The entire car controller of described pure electric automobile carries out verification to described the first gear information and described the second gear information, and to the electric machine controller device feedback check result of described pure electric automobile; And
When the described pure electric automobile of the electric machine controller of described pure electric automobile judgement to satisfy described gearshift condition and described check results be described the first gear information when consistent, drives the machine operation of described pure electric automobile with described the second gear information.
2. the shift control method of pure electric automobile as claimed in claim 1, is characterized in that, described gear signal is the Low level effective signal.
3. the shift control method of pure electric automobile as claimed in claim 1, is characterized in that, described gear signal is carried out filtering and anti-shake processing to be converted to the low level pulse signal.
4. the shift control method of pure electric automobile as claimed in claim 1, is characterized in that, the entire car controller of described pure electric automobile is sent to described low level pulse signal by the physics wire harness electric machine controller of described pure electric automobile.
5. the shift control method of pure electric automobile as claimed in claim 1, is characterized in that, described car load 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, is characterized in that, the battery management system of described pure electric automobile sends to described battery charge state information by power CAN bus the electric machine controller of described pure electric automobile.
7. the shift control method of pure electric automobile as claimed in claim 5, 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 the physics wire harness.
8. the shift control method of pure electric automobile as claimed in claim 1, it is characterized in that, comprise the steps: that also to satisfy described gearshift condition and described check results be described the first gear information with described the second gear information when consistent when the described pure electric automobile of the electric machine controller of described pure electric automobile judgement, the electric machine controller of described pure electric automobile sends gearshift information to the entire car controller of described pure electric automobile, the entire car controller of described pure electric automobile is lighted according to gear indicator lamp corresponding on the selector of the described pure electric automobile of described gearshift information-driven.
9. the shift control method of pure electric automobile as claimed in claim 8, is characterized in that, the entire car controller of described pure electric automobile sends to current gear information the instrument of described pure electric automobile.
10. the shift control method of pure electric automobile as claimed in claim 9, is characterized in that, the entire car controller of described pure electric automobile and the instrument of described pure electric automobile communicate by information CAN bus.
11. the shift control method of pure electric automobile as claimed in claim 1 is characterized in that, the entire car controller of described pure electric automobile and the electric machine controller of described pure electric automobile communicate by power CAN bus.
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| CN104776214A (en) * | 2015-04-02 | 2015-07-15 | 河南承信齿轮传动有限公司 | Pure electric vehicle two-gear mechanical automatic transmission gear-shifting control system and control method thereof |
| CN105196890A (en) * | 2015-09-16 | 2015-12-30 | 徐州科亚机电有限公司 | Gear-shifting integrated controller and control system |
| CN105313896A (en) * | 2014-06-18 | 2016-02-10 | 北京现代汽车有限公司 | Automobile gear management control method and device |
| CN107128210A (en) * | 2016-02-29 | 2017-09-05 | 陕西汽车集团有限责任公司 | Pure electric vehicle whole-control system containing two-shift automatic variable speed |
| CN109987040A (en) * | 2019-03-26 | 2019-07-09 | 武汉理工大学 | A kind of car gear shifting signal recognition 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 |
| CN112344013A (en) * | 2020-11-05 | 2021-02-09 | 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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| 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 |
| CN109987040A (en) * | 2019-03-26 | 2019-07-09 | 武汉理工大学 | A kind of car gear shifting signal recognition method and device |
| 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 |
| CN112344013A (en) * | 2020-11-05 | 2021-02-09 | 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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