CN105584374A - Electric automobile energy feedback system based on ABS and energy feedback method - Google Patents
Electric automobile energy feedback system based on ABS and energy feedback method Download PDFInfo
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- CN105584374A CN105584374A CN201610001232.8A CN201610001232A CN105584374A CN 105584374 A CN105584374 A CN 105584374A CN 201610001232 A CN201610001232 A CN 201610001232A CN 105584374 A CN105584374 A CN 105584374A
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- 230000001133 acceleration Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 12
- 238000010248 power generation Methods 0.000 claims description 9
- 239000011449 brick Substances 0.000 claims description 5
- 230000007812 deficiency Effects 0.000 claims description 3
- HOWHQWFXSLOJEF-MGZLOUMQSA-N systemin Chemical compound NCCCC[C@H](N)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(O)=O)C(=O)OC(=O)[C@@H]1CCCN1C(=O)[C@H]1N(C(=O)[C@H](CC(O)=O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H]2N(CCC2)C(=O)[C@H]2N(CCC2)C(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](NC(=O)[C@H](C)N)C(C)C)CCC1 HOWHQWFXSLOJEF-MGZLOUMQSA-N 0.000 claims 1
- 108010050014 systemin Proteins 0.000 claims 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides an electric automobile energy feedback system based on an ABS and an energy feedback method and belongs to the technical field of automobile power supply devices and power supply methods. The system comprises an acceleration pedal, a braking pedal, a VCU, a power CAN, a motor, a motor controller, a power battery pack, a chassis CAN, the ABS and a hydraulic braking system. The acceleration pedal and the braking pedal are both connected with the VCU. The VCU is in signal connection with the power CAN, the chassis CAN and an automobile body CAN. The power CAN is in signal connection with the motor controller and the power battery pack. The motor controller is connected with the motor. A BMS is arranged in the power battery pack. The ABS is connected to the chassis CAN and connected with the hydraulic braking system. An electromagnetic valve is arranged in the hydraulic braking system. By the adoption of the electric automobile energy feedback system in cooperation with control strategies of a whole automobile controller for the pedals and a power system, cooperated energy feedback is carried out when an electric automobile slides or is forcibly braked, and therefore the driving range of the automobile is increased.
Description
Technical field
The invention belongs to vehicle electric supply installation and method of supplying power to technical field, be particularly related to a kind of electronic based on ABSAutomobile is coordinated energy feedback system and energy feedback method.
Background technology
Electric automobile is a kind of green product of energy-saving and environmental protection, and current electrokinetic cell exists that specific energy is low, cost is high, chargingThe reasons such as the time is long, make electric automobile course continuation mileage be subject to significant limitation, and how this just make reasonable distribution electrokinetic cellIn bag, limited resource becomes particularly important. In the time that vehicle enters on-position, kinetic energy becomes heat energy by unrestrained in vain greatlyExpense is fallen, and how to coordinate and recycle this part energy, for providing the required energy value of follow-up driving to study.
Summary of the invention
The object of the invention is to overcome the above-mentioned defect of mentioning and deficiency, and a kind of electric automobile based on ABS is providedCoordinate energy feedback system.
Another object of the present invention is to provide a kind of energy feedback method that utilizes energy feedback system.
The technical scheme that the present invention realizes its object employing is as follows.
Coordinate an energy system based on the electric automobile of ABS, comprise accelerator pedal, brake pedal, VCU, power CAN,Motor, electric machine controller, electrokinetic cell bag, chassis CAN, ABS and brake fluid system;
Described accelerator pedal, brake pedal are all connected with VCU; Described VCU signal is connected with power CAN, chassis CAN and vehicle bodyCAN；
Described power CAN signal is connected with electric machine controller and electrokinetic cell bag; Described electric machine controller connects motor; Described movingIn power power brick, establish BMS;
Described chassis CAN is connected with ABS; Described ABS connects brake fluid system; In described brake fluid system, establish magnetic valve.
Electric automobile based on ABS is coordinated an energy system, also comprises vehicle body CAN, combination instrument, BCM and Brake lamp;Described vehicle body CAN is connected with combination instrument and BCM; Described BCM is connected with Brake lamp.
Described accelerator pedal is to the aperture signal of VCU delivery acceleration pedal; Described brake pedal transmits brake pedal to VCUAperture signal;
Described electric machine controller is connected VCU and is transmitted the current generated output higher limit allowable of motor and electricity to VCU by power CANThe current actual power power of machine; Described VCU transmits the current generated output allowable of motor by power CAN to electric machine controller;
Described electrokinetic cell bag is connected VCU and is transmitted the upper of power transmission power brick charge power allowable to VCU by power CANLimit value;
Described VCU transmits the current generated output higher limit allowable of motor and the current actual power merit of motor by chassis CAN to ABSRate; Described ABS transmits the current generated output allowable of motor by chassis CAN to VCU; Described ABS transmits to brake fluid systemSolenoid control signal.
Described VCU reclaims status information by vehicle body CAN to combination instrument transmitting energy; Described VCU by vehicle body CAN toBCM transmission braking deceleration status information; Described BCM is to Brake lamp transmission control level signal.
A coordination energy feedback method of coordinating energy feedback system based on the electric automobile of ABS, comprises the following steps:
In the driving process of electric automobile driving, in the time that release the gas pedal makes vehicle enter sliding state, VCU receives and addsThe aperture signal of speed pedal and brake pedal, the current generated output higher limit allowable of motor, the current actual power power of motor andThe higher limit of electrokinetic cell bag charge power allowable, and comprehensively judge the recyclable power upper limit value of motor and electrokinetic cell bag,Then the instruction that VCU sends motor current generated output allowable by power CAN is to electric machine controller, motor controller controls electricityMachine also makes motor generate electricity according to sliding brake function curve; In this process, if detecting wheel, ABS has locking state, ABSSend the information of wheel lock up to VCU by chassis CAN, VCU removes generating state and sends to remove by power CAN and send outThe instruction of electricity condition is to electric machine controller, and motor controller controls motor makes motor remove generating state;
In the driving process of electric automobile driving, in the time stepping on brake pedal and make vehicle enter forced brake state, VCU acceptsTo the current generated output higher limit allowable of aperture signal, motor, the current actual power merit of motor of accelerator pedal and brake pedalThe higher limit of rate and electrokinetic cell bag charge power allowable, then VCU transmits recyclable power upper limit by chassis CAN to ABSValue and brake pedal opening information are transferred to ABS, and ABS calculates the required total braking moment of vehicle according to brake pedal aperture situationValue also compares recyclable power upper limit value and the required total braking moment value of vehicle:
If the required total braking moment value of vehicle is less than braking moment value corresponding to recyclable power upper limit value, ABS passes through the endDish CAN will send to VCU when the required total braking moment value of vehicle in front, and VCU is by motor controller controls motor contrast vehicleRequired total braking moment value is generated electricity;
If the required total braking moment value of vehicle is greater than braking moment value corresponding to recyclable power upper limit value, ABS passes through the endDish CAN will send to VCU when the required total braking moment value of vehicle in front, and VCU sends instruction to Electric Machine Control by power CANDevice, motor controller controls motor also makes motor to generate electricity when the maximum recovery ability of front motor; Electric machine controller is by movingPower CAN is to the current actual power generation torque numerical value of carrying out of VCU feedback; The electricity that VCU carries out current reality by chassis CANSquare numerical value is transferred to ABS, and ABS is according to the required total braking moment value of vehicle and the current actual power generation torque numerical value of carrying out, meterCalculate and control the magnetic valve of hydraulic vehicle brake system, make up motor braking moment not to realize by brake fluid systemFoot.
In the driving process of electric automobile driving, in the time that making vehicle enter sliding state, maybe ought step on release the gas pedalWhen brake pedal makes vehicle enter forced brake state, VCU calculates when the deceleration of vehicle in front, when vehicle reaches obvious decelerationWhen state, VCU, by vehicle body CAN instruction combination instrument, points out vehicle deceleration state to driver, and VCU is by vehicle body CAN simultaneouslyTransmission of control signals is to BCM, and BCM controls Brake lamp and lights, and warns vehicle in deceleration regime with vehicle and pedestrian after car.
In the time that vehicle reaches the state of obvious deceleration, demarcate vehicle deceleration and be greater than 0.1g.
The invention utilizes the ABS system conventionally configuring on automobile, by increasing the cooperation mode between all parts,The control strategy of collaborative entire car controller (VCU) to pedal and dynamical system (containing motor and electrokinetic cell bag etc.), realizes electricityElectrical automobile is sliding and coordinating energy feedback when forced brake, to improve the continual mileage of vehicle. Based on NEDC(discharge markAccurate) can reach at most the rate of recovery of 8% left and right under state of cyclic operation, energy recovering effect is remarkable.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is sliding brake function curve of the present invention;
In figure: 1-accelerator pedal, 2-brake pedal, 3-VCU, 4-power CAN, 5-motor, 6-electric machine controller, 7-electrokinetic cellBag, 8-chassis CAN, 9-ABS, 10-brake fluid system, 11-vehicle body CAN, 12-combination instrument, 13-BCM, 14-Brake lamp.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Electric automobile based on ABS is coordinated an energy system, comprises accelerator pedal 1, brake pedal 2, VCU3, powerCAN4, motor 5, electric machine controller 6, electrokinetic cell bag 7, chassis CAN8, ABS9, brake fluid system 10, vehicle body CAN11, groupClose instrument 12, BCM13, Brake lamp 14.
Described accelerator pedal 1, brake pedal 2 are all connected with VCU3, and accelerator pedal 1 is opened to VCU3 delivery acceleration pedal 1Degree signal, brake pedal 2 is to the aperture signal of VCU3 transmission brake pedal 2; Described VCU3 signal is connected with power CAN4, chassisCAN8 and vehicle body CAN11.
Described VCU3, Vehiclecontrolunit, control unit for vehicle, carries out strategy control as gateway to this systemSystem. The technical program arranges power CAN4, chassis CAN8 and vehicle body CAN11 Zhe San road CAN, forms controller local area network.
Described power CAN4 signal is connected with electric machine controller 6 and electrokinetic cell bag 7; Described electric machine controller 6 connects electricityMachine 5; In described electrokinetic cell bag 7, establish BMS.
Described electric machine controller 6 connects VCU3 by power CAN4 and transmits on the current generated output allowable of motor to VCU3The current actual power power of limit value and motor. VCU3 transmits the current generating allowable of motor by power CAN4 to electric machine controller 6Power.
Described electrokinetic cell bag 7 is that electric vehicle is contained, for it provides the power supply of power. BMS, BATTERYMANAGEMENTSYSTEM is battery management system. Described electrokinetic cell bag 7 is by power CAN4 connection VCU3 and to VCU3The higher limit of transmission power transmission power brick charge power allowable.
Described chassis CAN8 is connected with ABS9; Described ABS9 connects brake fluid system 10; Described brake fluid system 10Inside establish magnetic valve.
ABS9, antilockbrakesystem, is anti-blocking brake system, effect is exactly in the time of automobile brake, automaticallyThe size of controlling brake braking force, makes wheel not by locking, in the sliding state of limit rolling, to ensure the attached of wheel and groundPut forth effort in maximum. VCU3 transmits the current generated output higher limit allowable of motor and the current reality of motor by chassis CAN8 to ABS9Border generated output. ABS9 transmits the current generated output allowable of motor by chassis CAN8 to VCU3.
ABS9 transmits solenoid control signal to brake fluid system 10.
Described vehicle body CAN11 is connected with combination instrument 12 and BCM13; Described BCM13 is connected with Brake lamp 14.
Described combination instrument 12, in order to demonstration information, is energy recovery state in order to point out driver current. VCU3 passes throughVehicle body CAN11 reclaims status information to combination instrument 12 transmitting energies.
Described BCM13, is car body control module, realizes discrete control function, numerous electrical appliances is controlled to weIn case, BCM13 is in order to control the level signal of Brake lamp 14. VCU3 transmits braking deceleration state by vehicle body CAN11 to BCM13Information. BCM13 transmits control level signal to Brake lamp 14.
Electric automobile based on ABS is coordinated an energy feedback method, comprises following content:
In the driving process of electric automobile driving, in the time that release the gas pedal 1 makes vehicle enter sliding state, VCU3 receivesThe aperture signal of accelerator pedal 1 and brake pedal 2, the current generated output higher limit allowable of motor, the current actual power merit of motorThe higher limit of rate and electrokinetic cell bag charge power allowable, and comprehensively judge on the recyclable power of motor 5 and electrokinetic cell bag 7Limit value, the instruction that then VCU3 sends the current generated output allowable of motor by power CAN4 is to electric machine controller 6, Electric Machine ControlDevice 6 is controlled motor 5 and motor 5 is generated electricity according to sliding brake function curve; In this process, if ABS9 detect wheel have embraceDeath situation state, ABS9 sends the information of wheel lock up to VCU3 by chassis CAN8, and VCU3 removes generating state and passes throughPower CAN4 sends the instruction of removing generating state to electric machine controller 6, and electric machine controller 6 is controlled motor sends out motor 5 releasingsElectricity condition.
In sliding brake function curve, transverse axis is current vehicle speed, and the longitudinal axis is motor target power generation torque. From sliding brake function curveCan find out, at low speed segment, generating capacity increases with the speed of a motor vehicle; In middling speed section, generating capacity is steady state value; In high speedSection, generating capacity increases and weakens with the speed of a motor vehicle.
When VCU comprehensively judges the recyclable power upper limit value of motor 5 and electrokinetic cell bag 7, the current required total braking of vehicleMoment is when the required braking moment of vehicle in front, and the method that this moment is demarcated by real vehicle under the different speed of a motor vehicle obtains. Vehicle hydraulicThe Return moment * transmission that the current required total braking force square of the required braking moment=vehicle providing of system-current electric power generation producesRatio; ABS9 controls magnetic valve make-and-break time (being dutycycle) and controls the braking pressure of setting up brake caliper pipeline, realizes controlThe target braking force square of fabrication pincers.
In the driving process of electric automobile driving, in the time stepping on brake pedal 2 and make vehicle enter forced brake state,It is current that VCU3 receives the current generated output higher limit allowable of aperture signal, motor, the motor of accelerator pedal 1 and brake pedal 2The higher limit of actual power power and electrokinetic cell bag charge power allowable, then VCU3 can to ABS9 transmission by chassis CAN8Regenerative power higher limit and brake pedal 2 opening information are transferred to ABS9, and ABS9 calculates vehicle according to brake pedal 2 aperture situationsRequired total braking moment value also compares recyclable power upper limit value and the required total braking moment value of vehicle:
If the required total braking moment value of vehicle is less than braking moment value corresponding to recyclable power upper limit value, ABS9 passes through the endDish CAN8 will send to VCU3 when the required total braking moment value of vehicle in front, and VCU3 controls motor 5 by electric machine controller 6 and contrastsThe required total braking moment value of vehicle is generated electricity;
If the required total braking moment value of vehicle is greater than braking moment value corresponding to recyclable power upper limit value, ABS9 passes through the endDish CAN8 will send to VCU3 when the required total braking moment value of vehicle in front, and VCU3 sends instruction to motor control by power CAN4Device 6 processed, electric machine controller 6 is controlled motor 5 and is made motor 5 to generate electricity when the maximum recovery ability of front motor 5; Electric machine controllerThe 6 power generation torque numerical value of carrying out to the current reality of VCU3 feedback by power CAN4; VCU3 passes through chassis CAN8 by current realityThe power generation torque numerical value of carrying out is transferred to ABS9, and ABS9 is according to the required total braking moment value of vehicle and current actual sending out of carrying outElectric moment numerical value, calculates and controls the magnetic valve of hydraulic vehicle brake system 10, makes up to realize by brake fluid system 10The deficiency of motor braking moment;
In the driving process of electric automobile driving, in the time that making vehicle enter sliding state, maybe ought step on release the gas pedal 1 systemWhen moving pedal 2 makes vehicle enter forced brake state, VCU3 calculates the deceleration when vehicle in front, when vehicle reaches obvious decelerationWhen state, for example, 0.1g, or other calibration values, VCU3, by vehicle body CAN11 instruction combination instrument 12, points out car to driverDeceleration regime, VCU3 is by vehicle body CAN11 transmission of control signals to BCM13 simultaneously, and BCM13 controls Brake lamp 14 and lights, withWarn vehicle in deceleration regime to vehicle after car and pedestrian.
The technical program, with the recyclable ability of VCU3 comprehensive assessment motor 5 and electrokinetic cell bag 7, taking ABS9 as brakingMoment judgement and the middle control module of distributing, the electric automobile of realizing by above-mentioned control mode is sliding recovery and forced brakeBraking energy in process is converted to the working method of power brick electric energy.
Traditional vehicle ABS9 is used in invention, by changing parts cooperation mode, while realizing the sliding and brake of electric automobileEnergy recovery function, simultaneously by system prompt current states such as combination instrument on car 12, Brake lamps 14.
The present invention is illustrated according to embodiment, is not departing under the prerequisite of present principles, if this device can also be madeDry distortion and improvement. It should be pointed out that all employings are equal to the technical scheme that the modes such as replacement or equivalent transformation obtain, and all drop on thisIn the protection domain of invention.
Claims (7)
1. the electric automobile based on ABS is coordinated an energy system, it is characterized in that, comprises accelerator pedal (1), brake pedal(2), VCU(3), power CAN(4), motor (5), electric machine controller (6), electrokinetic cell bag (7), chassis CAN(8), ABS(9) andBrake fluid system (10);
Described accelerator pedal (1), brake pedal (2) all with VCU(3) be connected; Described VCU(3) signal is connected with power CAN(4),Chassis CAN(8) and vehicle body CAN(11);
Described power CAN(4) signal is connected with electric machine controller (6) and electrokinetic cell bag (7); Described electric machine controller (6) connectsConnect motor (5); In described electrokinetic cell bag (7), establish BMS;
Described chassis CAN(8) be connected with ABS(9); Described ABS(9) connection brake fluid system (10); Described Hydraulic braking systemIn system (10), establish magnetic valve.
2. a kind of electric automobile based on ABS as claimed in claim 1 is coordinated energy system, it is characterized in that, also comprises carBody CAN(11), combination instrument (12), BCM(13) and Brake lamp (14); Described vehicle body CAN(11) be connected with combination instrument (12)And BCM(13); Described BCM(13) be connected with Brake lamp (14).
3. a kind of electric automobile based on ABS as claimed in claim 1 is coordinated energy system, it is characterized in that described accelerationPedal (1) is to VCU(3) the aperture signal of delivery acceleration pedal (1); Described brake pedal (2) is to VCU(3) transmission brake pedal(2) aperture signal;
Described electric machine controller (6) is by power CAN(4) connection VCU(3) and to VCU(3) the current generating merit allowable of transmission motorThe current actual power power of rate higher limit and motor; Described VCU(3) by power CAN(4) to electric machine controller (6) transmission electricityThe current generated output allowable of machine;
Described electrokinetic cell bag (7) is by power CAN(4) connect VCU(3) and to VCU(3) transmission power transmission power brick is allowableThe higher limit of charge power;
Described VCU(3) by chassis CAN(8) to ABS(9) the transmission current generated output higher limit allowable of motor and motor currentActual power power; Described ABS(9) by chassis CAN(8) to VCU(3) the current generated output allowable of transmission motor; Described ABS(9) to brake fluid system (10) transmission solenoid control signal.
4. a kind of electric automobile based on ABS as claimed in claim 2 is coordinated energy system, it is characterized in that described VCU(3) by vehicle body CAN(11) reclaim status information to combination instrument (12) transmitting energy; Described VCU(3) by vehicle body CAN(11) to BCM(13) transmission braking deceleration status information; Described BCM(13) to Brake lamp (14) transmission control level signal.
5. a utilization is wanted the electric automobile based on ABS as described in 1 as right and is coordinated the coordination energy feedback of energy feedback systemMethod, is characterized in that, comprises the following steps:
In the driving process of electric automobile driving, in the time that release the gas pedal (1) makes vehicle enter sliding state, VCU(3) connectBe subject to the current generated output higher limit allowable of aperture signal, motor, the current reality of motor of accelerator pedal (1) and brake pedal (2)The higher limit of border generated output and electrokinetic cell bag charge power allowable, and comprehensively judge motor (5) and electrokinetic cell bag (7)Recyclable power upper limit value, then VCU(3) by power CAN(4) instruction that sends the current generated output allowable of motor is to motorController (6), electric machine controller (6) is controlled motor (5) and motor (5) is generated electricity according to sliding brake function curve; This processIn, if ABS(9) detect that wheel has locking state, ABS(9) by chassis CAN(8) by the information transmission of wheel lock upGive VCU(3), VCU(3) remove generating state and pass through power CAN(4) send the instruction of removing generating state to Electric Machine ControlDevice (6), electric machine controller (6) is controlled motor makes motor (5) remove generating state;
In the driving process of electric automobile driving, in the time stepping on brake pedal (2) and make vehicle enter forced brake state, VCU(3) the current generated output higher limit allowable of aperture signal, motor, the motor that receive accelerator pedal (1) and brake pedal (2) are worked asThe higher limit of front actual power power and electrokinetic cell bag charge power allowable, then VCU(3) by chassis CAN(8) to ABS(9) transmit recyclable power upper limit value and brake pedal (2) opening information is transferred to ABS(9), ABS(9) according to brake pedal(2) aperture situation is calculated the required total braking moment value of vehicle to recyclable power upper limit value and the required total brake force of vehicleSquare value compares:
If the required total braking moment value of vehicle is less than braking moment value corresponding to recyclable power upper limit value, ABS(9) pass throughChassis CAN(8) will send to VCU(3 when the required total braking moment value of vehicle in front), VCU(3) by electric machine controller (6) controlThe required total braking moment value of motor processed (5) contrast vehicle is generated electricity;
If the required total braking moment value of vehicle is greater than braking moment value corresponding to recyclable power upper limit value, ABS(9) pass throughChassis CAN(8) will send to VCU(3 when the required total braking moment value of vehicle in front), VCU(3) by power CAN(4) transmission refers toOrder is to electric machine controller (6), and electric machine controller (6) is controlled motor (5) and made motor (5) to reclaim energy when front motor (5) is maximumPower is generated electricity; Electric machine controller (6) is by power CAN(4) to VCU(3) feed back the current actual power generation torque numerical value of carrying out;VCU(3) by chassis CAN(8) the current actual power generation torque numerical value of carrying out is transferred to ABS(9), ABS(9) according to vehicle instituteNeed total braking moment value and the current actual power generation torque numerical value of carrying out, calculate and control hydraulic vehicle brake system (10)Magnetic valve, to realize the deficiency that is made up motor braking moment by brake fluid system (10).
6. a kind of electric automobile based on ABS as claimed in claim 5 is coordinated energy feedback method, it is characterized in that, also bagDraw together following steps: in the driving process of electric automobile driving, in the time that release the gas pedal (1) makes vehicle enter sliding state orIn the time stepping on brake pedal (2) and make vehicle enter forced brake state, VCU(3) calculate the deceleration when vehicle in front, when vehicle reachesDuring to the obvious state slowing down, VCU(3) by vehicle body CAN(11) instruction combination instrument (12), point out vehicle deceleration to driverState, simultaneously VCU(3) by vehicle body CAN(11) transmission of control signals is to BCM(13), BCM(13) control Brake lamp (14) pointBright, warn vehicle in deceleration regime with vehicle and pedestrian after car.
7. a kind of electric automobile based on ABS as claimed in claim 6 is coordinated energy feedback method, it is characterized in that, also bagDraw together following steps: in the time that vehicle reaches the state of obvious deceleration, demarcate vehicle deceleration and be greater than 0.1g.
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Cited By (14)
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|---|---|---|---|---|
| CN105946856A (en) * | 2016-06-16 | 2016-09-21 | 吉林大学 | Self-adaptive slipping control method of pure electrically driven automobile |
| CN106828139A (en) * | 2016-12-14 | 2017-06-13 | 华晨汽车集团控股有限公司 | Electrical system for pure electric vehicle framework based on CAN and ZigBee heterogeneous networks topology |
| CN108819725A (en) * | 2018-06-28 | 2018-11-16 | 北京车和家信息技术有限公司 | Braking energy processing method, device, vehicle and computer readable storage medium |
| CN108859763A (en) * | 2017-05-09 | 2018-11-23 | 郑州宇通客车股份有限公司 | A kind of control method and device preventing new-energy automobile sliding, braking shake |
| CN109130874A (en) * | 2018-10-17 | 2019-01-04 | 奇瑞新能源汽车技术有限公司 | Braking energy of electric automobiles recovery control system and its control method |
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| CN109572439A (en) * | 2018-12-24 | 2019-04-05 | 广州小鹏汽车科技有限公司 | A kind of method for recovering brake energy, device and automobile |
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