CN205769259U - Intelligence pure electric coach braking control system - Google Patents
Intelligence pure electric coach braking control system Download PDFInfo
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- CN205769259U CN205769259U CN201620693070.4U CN201620693070U CN205769259U CN 205769259 U CN205769259 U CN 205769259U CN 201620693070 U CN201620693070 U CN 201620693070U CN 205769259 U CN205769259 U CN 205769259U
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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
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
This utility model provides a kind of intelligence pure electric coach braking control system and control method thereof; described braking control system includes wheel speed sensors, accelerator pedal device and sensor, brake pedal apparatus and sensor, motor braking system, Pneumatic braking system and controller VCU; described Pneumatic braking system includes being sequentially connected with the pneumatic module processed formed by air compressor, feather valve and four-loop protection valve; conventional service brake gas circuit, Anti-slip regulation braking gas circuit and parking braking gas circuit.The control method of described braking control system includes that conventional brake control, ABS anti-lock control and Anti-slip regulation controls, and selects corresponding braking strategy according to severity of braking Z and battery SOC situation.This utility model, on the premise of ensureing braking safety, improves Brake energy recovery rate.
Description
Technical field
This utility model belongs to automobile brake technical field, is specifically related to intelligence pure electric coach braking control system, suitable
For electric motor coach Pneumatic braking system.
Background technology
Along with the progress of consumption, ecological deterioration and the technology of the energy, vehicle intellectualized and motorized is present automobile industry
Development trend.Vehicle intellectualized is to make running car safer, more comfortable.Electric automobile has Brake energy recovery merit
Can, it is possible to save the energy.Passenger vehicle under city driving cycle, due to congested in traffic, speed is the highest, frequent repeatedly starting and stopping, cause
Very big energy dissipation, and it is susceptible to vehicle accident.
The brakes of intelligence pure electric coach needs to take into account braking safety and two aspects of energy recovery rate, is running into
Emergency wants to remind driver, even actively braking, on the premise of ensureing braking safety, it should carry as far as possible
High Brake energy recovery rate.
Utility model content
In order to realize on the premise of ensureing braking safety, improving Brake energy recovery rate, this utility model provides
A kind of intelligence pure electric coach braking control system, in conjunction with Figure of description, technical scheme is as follows:
Intelligence pure electric coach braking control system, steps on including wheel speed sensors, accelerator pedal device and sensor, braking
Panel assembly and sensor, motor braking system, Pneumatic braking system and controller VCU；
Described motor braking system includes being arranged on the battery at automobile front-axle and battery management system 24 and being arranged on
Main reducing gear 39 on rear axle and motor 40, be provided with electric machine controller 37 on described motor 40；
Described Pneumatic braking system includes being sequentially connected with formed by air compressor 1, feather valve 3 and four-loop protection valve 6
Pneumatic module processed, conventional service brake gas circuit, Anti-slip regulation braking gas circuit and parking braking gas circuit；
The described conventional service brake gas circuit of front axle is: four-loop protection valve 6, front gas receiver 9, brake pedal apparatus 12
Epicoele, the low-pressure admission mouth of front dual control proportion relay valve 16 and three-way valve I 22 are sequentially connected with, and give vent to anger for two of three-way valve I 22
Mouth is sequentially connected with left and right front-wheel ABS electromagnetic valve and left and right front brake chamber respectively；
The described conventional service brake gas circuit of rear axle is: four-loop protection valve 6, rear gas receiver 8, brake pedal apparatus 12
Cavity of resorption, the low-pressure admission mouth of rear dual control proportion relay valve 41 and three-way valve II 38 are sequentially connected with, and two of three-way valve II 38 go out
QI KOU is sequentially connected with left and right trailing wheel ABS electromagnetic valve and left and right rear brake chamber respectively；
The high pressure admission mouth of described front dual control proportion relay valve 16 is directly connected with front gas receiver 9；
The high pressure admission mouth of described rear dual control proportion relay valve 41 is directly connected with rear gas receiver 8；
Brake chamber pressure transducer it is mounted on described brake chamber；
Described sensor, battery management system 24, electric machine controller 37, dual control proportion relay valve, three-way valve, wheel ABS electricity
Magnet valve all controls to be connected with controller VCU.
Intelligence pure electric coach braking control system, wherein, described Anti-slip regulation service brake gas circuit is:
One gas outlet of four-loop protection valve 6, front gas receiver 9, the epicoele of brake pedal apparatus 12, front active pressure control
Molding block and three-way valve I 22 are sequentially connected with, two gas outlets of three-way valve I 22 respectively with left and right front-wheel ABS electromagnetic valve and
Left and right front brake chamber is sequentially connected with；
Another gas outlet of four-loop protection valve 6, rear gas receiver 8, the cavity of resorption of brake pedal apparatus 12, rear active pressure
Control module and three-way valve II 38 are sequentially connected with, two gas outlets of three-way valve II 38 respectively with left and right trailing wheel ABS electromagnetic valve
It is sequentially connected with left and right rear brake chamber；
Described active pressure control module controls to be connected with controller VCU.
Intelligence pure electric coach braking control system, wherein, described active pressure control module is by a quick release valve and
Individual linear solenoid valve is composed in series, and described quick release valve is connected with gas receiver, and affiliated linear solenoid valve is connected with three-way valve, described line
Property electromagnetic valve automatically controlled signal Interface and Controler VCU corresponding automatically controlled signal interface be connected.
Intelligence pure electric coach braking control system, wherein, described parking braking gas circuit is: four-loop protection valve 6 and three
Logical valve III 43 is connected, two gas outlets of three-way valve III 43 respectively with left and right trailing wheel ABS electromagnetic valve and left and right rear brake chamber
It is sequentially connected with；
Described three-way valve III 43 controls to be connected with controller VCU.
Intelligence pure electric coach braking control system, wherein, described control system also includes range finder module and data analysis
Module, described range finder module is connected with data analysis module, and described range finder module is by microwave radar, laser radar and video system
Composition, is used for image and the traffic information providing road ahead real-time；Described data analysis module is by single-chip microcomputer and related circuit
Composition, described data analysis module controls to be connected with controller VCU.
Intelligence pure electric coach braking control system, wherein, described control system also includes that vehicle body stable type controls assembly,
By the yaw-rate sensor 31 being arranged on back axle midline, be arranged on wheel steering post steering wheel angle sensing
Device 30 and be arranged on the lateral acceleration sensor 29 at the rear axle vertical with automobile longitudinal direction of advance and form, described yaw
The signal output part of angular-rate sensor 31, steering wheel angle sensor 30 and lateral acceleration sensor 29 respectively with vehicle control
The signal receiving end of device VCU processed is connected.
Compared with prior art, the beneficial effects of the utility model are:
In existing regenerative braking system of electric vehicle, due to technology and cost reason, typically when ABS works, all
It is to close regeneration brake system, recovers traditional air-pressure brake.And in existing technology, especially commercial car field, braking
System is not carried out total Linearization control, it is impossible to realize the most accurately controlling brake pressure.This utility model devises one
Kind new control strategy, it is possible to ABS works when, motor braking also works, when so can significantly improve braking
Energy recovery efficiency.This utility model, in the brakes of design, is complete line traffic control, can not only realize the accurate of brake pressure
Control, also there is the function such as full decoupling, failure mode braking, actively braking.
Accompanying drawing explanation
Fig. 1 is the structure diagram of intelligence pure electric coach braking control system of the present utility model；
Fig. 2 is the structure letter of active pressure control module in intelligence pure electric coach braking control system of the present utility model
Figure；
Fig. 3 is intelligence pure electric coach braking control system work process sketch of the present utility model；
Fig. 4 is in intelligence pure electric coach braking control system work process of the present utility model, R thresholding and other thresholdings
Value graph of a relation；
Fig. 5 is in the work process of intelligence pure electric coach braking control system of the present utility model, ABS ANTI LOCK
Control workflow block diagram；
In figure:
1-air compressor；2-off hind wheel wheel speed sensors；3-feather valve；
4-off hind wheel；Brake chamber behind the 5-right side；6-four-loop protection valve；
Brake chamber pressure transducer behind the 7-right side；Gas receiver after 8-；Gas receiver before 9-；
10-brake-pedal load sensor；11-brake pedal displacement transducer；12-brake pedal apparatus；
13-accelerator pedal force transducer；14-accelerator pedal displacement transducer；15-accelerator pedal device；
Dual control proportion relay valve before 16-；17-off-front wheel ABS electromagnetic valve；Brake chamber pressure transducer before the 18-right side；
Brake chamber before the 19-right side；20-off-front wheel；21-off-front wheel wheel speed sensors；
22-three-way valve I；23-the near front wheel ABS electromagnetic valve；24-battery management system (BMS)；
The left front brake chamber of 25-；26-left front brake chamber pressure transducer；27-the near front wheel wheel speed sensors；
28-the near front wheel；29-lateral acceleration sensor；30-steering wheel angle sensor；
31-yaw-rate sensor；32-left rear wheel；33-left rear wheel wheel speed sensors；
34-left back brake chamber pressure transducer；The left back brake chamber of 35-；36-left rear wheel ABS electromagnetic valve；
37-electric machine controller (MCU)；38-three-way valve II；39-main reducing gear；
40-motor；Dual control proportion relay valve after 41-；42-off hind wheel ABS electromagnetic valve；
43-three-way valve III.
Detailed description of the invention
This utility model provides a set of intelligence pure electric coach brakes, is not only able to by dual control proportion relay valve
Realize the accurate distribution of front axle and rear axle braking force, by the ABS electromagnetic valve on rear axle can also realize rear axle air-pressure brake power and
The accurate distribution of motor regenerative braking force, simultaneously when automatically controlled partial failure, can carry out conventional brake, it is ensured that brake safe.
This brakes realizes actively braking and brake hard by active pressure control module.In order to further illustrate this utility model
Technical scheme, in conjunction with Figure of description, detailed description of the invention of the present utility model is as follows:
As it is shown in figure 1, this utility model provides a kind of intelligence pure electric coach braking control system, sense including wheel speed
Device, accelerator pedal device and sensor, brake pedal apparatus and sensor, motor braking system, Pneumatic braking system and control
Device VCU processed；
Described motor braking system includes being arranged on the battery at automobile front-axle and battery management system 24 and being arranged on
Main reducing gear 39 on rear axle and motor 40, be provided with electric machine controller 37 on described motor 40；
Described Pneumatic braking system includes conventional service brake gas circuit, Anti-slip regulation braking gas circuit and parking braking gas
Road；
The gas part processed of described Pneumatic braking system includes air compressor 1, feather valve 3 and four-loop protection valve 6.Extraneous
Air through air compressor 1 process after, through feather valve 3 and four-loop protection valve 6, be filled into front gas receiver 9, rear gas storage
Cylinder 8.When parking braking, gases at high pressure can be flowed into three-way valve 43 directly by a gas outlet of four-loop protection valve,
The most directly it is filled into the spring brake chamber of two trailing wheels, carries out parking braking.
The conventional service brake gas circuit of control system of the present utility model is divided into front axle and rear axle.
The gas outlet of front gas receiver 9 is connected with the epicoele air inlet of brake pedal apparatus 12, brake pedal apparatus 12 upper
Gas outlet, chamber is connected with the low-pressure admission mouth of dual control proportion relay valve 16；The gas outlet of dual control proportion relay valve 16 and three-way valve 22
Air inlet be connected, two gas outlets of three-way valve 22 respectively with off-front wheel ABS electromagnetic valve 17, the near front wheel ABS electromagnetic valve 23
Air inlet is connected, and the gas outlet of off-front wheel ABS electromagnetic valve 17 is connected with brake chamber before the right side 19, the near front wheel ABS electromagnetic valve 23
Air inlet is connected with left front brake chamber 25, and this is the conventional brake gas circuit of front axle；
The high pressure admission mouth of front dual control proportion relay valve 16 directly gas outlet with front gas receiver 9 is connected, and dual control ratio continues
The automatically controlled signal interface signaling interface corresponding with automobile controller VCU of dynamic valve 16 is connected；
The gas outlet of rear gas receiver 8 is connected with the cavity of resorption air inlet of brake pedal 12, the cavity of resorption gas outlet of brake pedal 12
It is connected with the low-pressure admission mouth of dual control proportion relay valve 41；The gas outlet of dual control proportion relay valve 41 and the air inlet of three-way valve 38
Be connected, two gas outlets of three-way valve 38 respectively with off hind wheel ABS electromagnetic valve 42, the air inlet phase of left rear wheel ABS electromagnetic valve 36
Even, the gas outlet of off hind wheel ABS electromagnetic valve 42 is connected with brake chamber behind the right side 5, and the gas outlet of left rear wheel ABS electromagnetic valve 36 is with left
Rear brake chamber 35 is connected, and this is the conventional brake gas circuit of rear axle.
The high pressure admission mouth of rear dual control proportion relay valve 41 directly gas outlet with rear gas receiver 8 is connected, and dual control ratio continues
The automatically controlled signal interface signaling interface corresponding with automobile controller VCU of dynamic valve 41 is connected；
Under normal circumstances, driver's brake pedal, generation automatically controlled signal, to gas outlet pressure for dual control proportion relay valve
Power is controlled；When electric-control system lost efficacy, during driver's brake pedal, by the gas pressure of the upper and lower cavity of brake pedal
Gas outlet pressure is controlled by power.
Before the most left front, right, behind the left back and right side, on brake chamber, it is mounted on brake chamber pressure transducer,
Wherein, brake chamber pressure transducer 7, right front brake chamber pressure transducer 18, left front brake chamber pressure transducer behind the right side
26, left back brake chamber pressure transducer 34 gathers the air chamber pressure of corresponding four brake chambers, four brake chambers respectively
The signal output part of pressure transducer signal receiving end with vehicle control device VCU respectively is connected.
The Anti-slip regulation service brake gas circuit of control system of the present utility model is: give vent to anger for one of four-loop protection valve 6
Mouth, front gas receiver 9, the epicoele of brake pedal apparatus 12, front active pressure control module and three-way valve I 22 are sequentially connected with, and three
Two gas outlets of logical valve I 22 are sequentially connected with left and right front-wheel ABS electromagnetic valve and left and right front brake chamber respectively；
Another gas outlet of four-loop protection valve 6, rear gas receiver 8, the cavity of resorption of brake pedal apparatus 12, rear active pressure
Control module and three-way valve II 38 are sequentially connected with, two gas outlets of three-way valve II 38 respectively with left and right trailing wheel ABS electromagnetic valve
It is sequentially connected with left and right rear brake chamber；
As in figure 2 it is shown, described front active pressure control module is identical with rear active pressure control module structure, fast by one
Putting valve and a linear solenoid valve composition, the air inlet of active pressure control module is connected with the gas outlet of gas receiver, gas outlet
Being connected with the air inlet of three-way valve, signal controls end and is connected with the signal control end of vehicle control device VCU.Front active pressure controls
The air inlet of module is connected with the gas outlet of front gas receiver 9, front active pressure control module gas outlet and three-way valve 22 air inlet
Be connected, two gas outlets of three-way valve 22 respectively with the air inlet of off-front wheel ABS electromagnetic valve 17, the near front wheel ABS electromagnetic valve 23
Air inlet is connected.The gas outlet of off-front wheel ABS electromagnetic valve 17 is connected with brake chamber before the right side 19, the near front wheel ABS electromagnetic valve 23
Gas outlet is connected with left front brake chamber 25.The automatically controlled signal interface of front active pressure control module is with vehicle control device VCU's
Corresponding automatically controlled signal interface is connected.The air inlet of rear active pressure control module is connected with the gas outlet of rear gas receiver 8, rear active
The gas outlet of pressure control module is connected with the air inlet of three-way valve 38, two gas outlets of three-way valve 38 respectively with off hind wheel
ABS electromagnetic valve 42, the air inlet of left rear wheel ABS electromagnetic valve 36 are connected.Braking is waited with right in the gas outlet of off hind wheel ABS electromagnetic valve 42
Air chamber 5 is connected, and the gas outlet of left rear wheel ABS electromagnetic valve 36 is connected with left back brake chamber 35.Rear active pressure control module
Automatically controlled signal interface automatically controlled signal interface corresponding to vehicle control device VCU is connected.
The parking braking gas circuit of control system of the present utility model is: four-loop protection valve 6 is connected with three-way valve III 43, three
Two gas outlets of logical valve III 43 are sequentially connected with left and right trailing wheel ABS electromagnetic valve and left and right rear brake chamber respectively；Described three
Logical valve III 43 controls to be connected with controller VCU.
As it is shown in figure 1, be provided with brake-pedal load sensor 10, brake pedal displacement transducer below brake pedal
11.The signal measured by brake-pedal load sensor 10 and brake pedal displacement transducer 11, can identify driver
Braking intention and demand brake force.On accelerator pedal, accelerator pedal force transducer 13, accelerator pedal displacement sensing are installed
Device 14.The signal measured by accelerator pedal force transducer 13 and accelerator pedal displacement transducer 14, can identify driver
Traveling be intended to.Vehicle control device VCU gathers brake-pedal load sensor 10, brake pedal displacement transducer 11, accelerates to step on
Plate force transducer 13 and the signal of accelerator pedal displacement transducer 14, be analyzed calculating, and can obtain now driver accurate
True driving intention.
Control system of the present utility model also includes range finder module, data analysis module and vehicle body stable type control group
Part.
Described range finder module is connected with data analysis module, and described range finder module is by microwave radar, laser radar and video
System forms, and is used for image and the traffic information providing road ahead real-time；Described data analysis module is by single-chip microcomputer and corresponding
Circuit forms, and described data analysis module controls to be connected with controller VCU.Range finder module can measure the road of vehicle front in real time
Condition, it can provide safe and accurate, the real-time image of road ahead and traffic information.The information that measurement is arrived by range finder module passes
Giving data analysis module, the distance measured is compared by data analysis module with alarm distance, safe distance, and will analyze
Result be sent to vehicle control device VCU.When the distance recorded is less than alarm distance set in advance, and vehicle control device VCU is just
Carry out alarm sounds, even if not having enough time to step on the situation of brake pedal when the distance recorded is less than safe distance driver
Under, vehicle control device VCU also can send corresponding instruction to active pressure control module, opens active pressure control module, front
Four wheels are directly braked by the gases at high pressure in rear gas receiver by active pressure control module.
Described vehicle body stable type controls assembly and includes lateral acceleration sensor 29, steering wheel angle sensor 30 and horizontal stroke
Pivot angle velocity sensor 31.Wherein, yaw-rate sensor 31 is arranged on vehicle rear axle midline, yaw-rate sensor
The signal transmission ends of 31 is connected with the signal receiving end of vehicle control device VCU；Steering wheel angle sensor 30 is arranged on direction
On dish steering column, the signal transmission ends of steering wheel angle sensor 30 is connected with the signal receiving end of vehicle control device VCU；Side
It is arranged at the rear axle vertical with automobile longitudinal direction of advance to acceleration transducer 29, the signal of lateral acceleration sensor 29
Outfan is connected with the signal receiving end of vehicle control device VCU.Vehicle control device VCU gathers lateral acceleration sensor respectively
Steering wheel angle signal, yaw velocity that 29 lateral acceleration signals measured, steering wheel angle sensor 30 are measured sense
The yaw rate signal that device 31 is measured.
Battery and the battery management system 24 of vehicle are arranged on front part of vehicle, and set of cells is by the Ni-MH battery string of single-unit also
Connection combines, and battery management system (BMS) 24 can gather the signals such as the SOC of set of cells, voltage, electric current, temperature, and will
The signal gathered sends vehicle control device to, carries out corresponding analysis and Control.
As it is shown on figure 3, the work process of intelligence pure electric coach braking control system of the present utility model includes conventional system
Dynamic control, ABS anti-lock control, Anti-slip regulation controls, actively control for brake and vehicle body stability control；
1. conventional brake controls: when driver's release the gas pedal 15 brake pedal 12, be positioned at brake pedal 12 times
Brake-pressure sensor 10 and the Brake displacement sensor 11 of side are measured corresponding signal and are passed to vehicle control device VCU, vehicle
Controller VCU calculates demand braking force and severity of braking demand Z of car load, and now vehicle control device VCU gathers four cars simultaneously
Wheel wheel speed, the rotary speed information of electric machine controller (MCU) 37 and the corresponding SOC of battery management system (BMS) 24, voltage, electric current,
The signals such as temperature, and analyze accordingly, confirm mode of braking.
(1) if confirmed through vehicle control device VCU computational analysis: now severity of braking Z less than 0.1, battery SOC is less than
Higher limit 0.9, in drive shaft the wheel speed of two wheels more than motor minimum start rotating speed and now demand brake force less than electricity
The maximum braking force that machine can be provided by.Now vehicle control device VCU will make: the brake force of car braking is all produced by motor
Raw instruction.Now vehicle control device VCU only sends control instruction to motor 40, produces the braking moment of demand.
(2) if be analyzed to identify through vehicle control device VCU: now severity of braking Z be in moderate strength 0.1-0.7 it
Between, battery SOC less than higher limit 0.9, in drive shaft, the wheel speed of two wheels starts rotating speed, now vehicle more than the minimum of motor
Controller will send: the instruction that the braking moment of two wheels of front axle is all provided by Pneumatic braking system.Vehicle control device
Also antero posterior axis demand braking force value can during this time be calculated.
If i) maximum moment that now motor is provided that is more than the braking moment needed for rear axle, the then braking of two trailing wheels
Moment is produced by motor completely.Vehicle control device VCU sends control instruction to the dual control proportion relay valve 16 of front axle, closes dual control
The low-pressure admission mouth of proportion relay valve 16, the aperture of regulation dual control proportion relay valve 16, like this, the height in front gas receiver 9
Body of calming the anger arrives off-front wheel ABS electromagnetic valve 17 and the near front wheel ABS electromagnetic valve 23 through dual control proportion relay valve 16, arrives the most respectively
Reach brake chamber 19 and left front brake chamber 25 before the right side, produce corresponding demand braking moment and be braked.Vehicle control device VCU
Send corresponding control instruction to electric machine controller (MCU) 37, make motor 40 produce the braking moment needed for rear axle.
Ii) if the maximum moment that now motor is provided that is less than the braking moment needed for rear axle, the most now motor produces
Maximum braking moment, the moment values that baric systerm produces is that rear axle demand braking moment deducts motor braking moment.Vehicle control
Device VCU processed sends control instruction, the low-pressure admission of the 16 of closedown dual control proportion relay valve to the dual control proportion relay valve 16 of front axle
Mouthful, open the high pressure admission mouth of dual control proportion relay valve 16, regulate the aperture of dual control proportion relay valve 16, like this, front storage
Gases at high pressure in inflator 9 arrive off-front wheel ABS electromagnetic valve 17 and the near front wheel ABS electromagnetic valve through dual control proportion relay valve 16
23, then arrive separately at brake chamber 19 and left front brake chamber 25 before the right side, produce corresponding demand braking moment and be braked.
Vehicle control device VCU sends corresponding control instruction to electric machine controller (MCU) 37, makes motor 40 produce the maximum that can be provided by
Regenerative braking moment, vehicle control device VCU sends corresponding control instruction to the dual control proportion relay valve 41 of rear axle simultaneously, regulation
The aperture of dual control proportion relay valve 41 so that it is rear axle demand braking moment can be produced and deduct the maximum braking moment that motor 40 produces
After braking moment.After now, the gases at high pressure in gas receiver 8 arrive off hind wheel ABS electricity through rear axle dual control proportion relay valve 41
Magnet valve and left rear wheel ABS electromagnetic valve, then arrive separately at brake chamber 5 and left back brake chamber 35 behind the right side, produce with motor 40
Braking moment together two trailing wheels are braked.
(3) if confirmed through vehicle control device VCU computational analysis: now severity of braking Z be more greatly Z more than 0.7 or
Person's battery SOC is too high is higher than 0.9.Vehicle control device VCU will make: closes the brake force needed for regeneration brake system, vehicle
Produced by Pneumatic braking system completely.
Now to send the corresponding signal of telecommunication respectively double to the dual control proportion relay valve 16 of front axle and rear axle for vehicle control device VCU
Control proportion relay valve 41, the low-pressure admission mouth of 16 and the 41 of closedown dual control proportion relay valve, open dual control proportion relay valve 16 He
The high pressure admission mouth of 41, and the aperture of air inlet can be adjusted, thus regulate braking pressure power.Like this, front gas storage
Gases at high pressure in cylinder 9 arrive off-front wheel ABS electromagnetic valve 17 and left rear wheel ABS electromagnetic valve through dual control proportion relay valve 16, so
After arrive separately at brake chamber 19 and left front brake chamber 25 before the right side, be braked.Gases at high pressure in rear gas receiver 8 are through later
Axle dual control proportion relay valve 41 arrives off hind wheel ABS electromagnetic valve and left rear wheel ABS electromagnetic valve, brakes gas after then arriving separately at the right side
Two trailing wheels are braked by room 5 and left back brake chamber 35.
2.ABS anti-lock controls: when vehicle is when carrying out conventional brake, if now before off hind wheel wheel speed sensors 2, the right side
The wheel speed letter of four wheels that wheel wheel speed sensors 21, the near front wheel wheel speed sensors 27 and left rear wheel wheel speed sensors 33 collect
Breath, draws certain wheel after vehicle control device VCU analytical calculation, locking or when having the trend close to locking, car
Controller VCU will send the associated cyclic control signals such as decompression, pressurize, supercharging to the ABS electromagnetic valve at corresponding wheel place,
Until this wheel recovers normal on-position.Consider the regenerative braking during braking anti-lock.Traditional logic threshold
Value: A-wheel angular acceleration the first threshold value；A1-wheel angular acceleration threshold value；A0-wheel angular deceleration threshold value；S1-car
Wheel slip rate lower limit；S2-wheel slip higher limit；Introduce R threshold value, R threshold value and other threshold value magnitude relationship, as
Shown in Fig. 4.
ABS ANTI LOCK can be divided into three below process:
1) braking procedure before R thresholding triggers, this is conventional abs braking process；
2) after R thresholding triggers, the braking procedure before the triggering of a0 thresholding, referred to as R-a0 braking procedure；
3) braking procedure after a0 thresholding triggers, braking procedure after referred to as a0.
Braking procedure before wherein R thresholding triggers is the conventional brake process that ABS works；After R-a0 braking procedure and a0
Braking procedure is referred to as ABS and controls braking procedure with regenerative brake coordination.
As it is shown in figure 5, intelligence pure electric coach Braking Analysis in R-a0 braking procedure:
When wheel angular deceleration is more than R threshold value, i.e. dw < during R, the trend that at this moment air-pressure brake power is reduced, this
Time regenerative braking moment carried out little gradient reduction；
Regenerative braking moment is during reducing, if regenerative braking force is reduced to zero, then the air pressure recovering conventional is prevented
Braking with locked wheels；If regenerative braking moment is not zero, judge wheel angular acceleration dw the most again, if dw > R, regenerative braking moment is entered
Row pressurize processes；If dw<R, then judge the relation of dw Yu a0, if dw>a0, continue that regenerative braking moment is carried out little gradient and subtract
Little process；If dw < a0, then enter into braking procedure after a0.
Intelligence pure electric coach Braking Analysis in braking procedure after a0 as shown in Figure 5:
Dw<a0, at this time, it may be necessary to carry out the comparison of slip rate, if slip rate S>S1 now, the most respectively to air-pressure brake power
Carrying out reduced pressure treatment with regenerative braking moment, wherein regenerative braking moment remains employing little gradient reduction；If regenerative braking force
Square is reduced to zero during little gradient reduces, and then returns to traditional air pressure ANTI LOCK；If regenerative braking moment is not
It is zero, then its relation with a0 of interpretation, if dw < a0, still air-pressure brake moment and regenerative braking moment are carried out reduction process；
If dw > a0, then keep regenerative braking moment and carry out pressurize timing；Judge the relation of dw and a1 the most again, if dw > a1, the most extensive
Multiple to conventional abs braking process；If dw < a1, gradient reduces regenerative braking moment.
3. Anti-slip regulation controls: when vehicle is in driving operating mode, if now vehicle control device VCU passes through wheel speed sensors
2,21,27,33 gather wheel speed signal, and analytical calculation draws, when now vehicle is in slipping state.When speed is relatively low, vehicle
Controller VCU sends control instruction to electric machine controller (MCU) 37, reduces the driving moment of motor 40, vehicle control device simultaneously
VCU active pressure control module backward sends control instruction, and after regulation, the linear solenoid valve in active pressure control module opens
Degree, carries out linear regulation to the off hind wheel ABS electromagnetic valve 42 on rear axle, the aperture of left rear wheel ABS electromagnetic valve 36 simultaneously.Such
Words, it becomes possible to the driving wheel on rear axle is applied certain brake pressure.When speed is higher, vehicle control device VCU is to motor
Controller (MCU) sends control instruction, reduces the driving moment of motor,
4. active control for brake: range finder module measures the road conditions of vehicle front, the information transmission that measurement is arrived by range finder module
To data analysis module, the distance measured is compared by data analysis module with alarm distance, safe distance, and by analysis
Result is sent to vehicle control device VCU.When the distance recorded is less than alarm distance set in advance, and vehicle control device VCU just enters
Row alarm sounds, even if when the distance recorded is less than safe distance in the case of driver does not have enough time to step on brake pedal
(brake hard), vehicle control device VCU can send corresponding instruction to active pressure control module, opens active pressure and controls mould
Block, and the aperture of the electromagnetic valve in active pressure control module is carried out linear regulation, front and back the gases at high pressure in gas receiver are straight
Connected active pressure control module four wheels are braked.
5. vehicle body stability controls: vehicle, during straight-line travelling, is gathered laterally by lateral acceleration sensor 29
Acceleration signal, it will be appreciated that the traveling attitude of automobile and driving trace；Vehicle, under steering situation, is passed by lateral acceleration
Sensor 29 gathers lateral acceleration signal, and yaw-rate sensor 31 gathers yaw rate signal, and steering wheel angle senses
Device 30 gathers steering wheel angle signal, it will be appreciated that vehicle vehicle attitude under steering situation.When sensor will collect
Signal passes to vehicle control device VCU, carries out computational analysis, if now vehicle plays pendulum, vehicle control device VCU will
Can calculate and need vehicle to be kept to be in steady statue to the great brake force of each wheel applying.Vehicle control device simultaneously
VCU will send corresponding control signal to front and back's active pressure control module, simultaneously to off-front wheel ABS electromagnetic valve 17, left front
Wheel ABS electromagnetic valve 23, left rear wheel ABS electromagnetic valve, off hind wheel ABS electromagnetic valve 42 carry out linear regulation.Like this, from the highest
Each wheel, by active pressure control module and the regulation of corresponding ABS electromagnetic valve, can be produced by the gases at high pressure of pressure gas receiver
Raw corresponding brake pressure, thus can make vehicle recover steady statue.
Claims (6)
1. intelligence pure electric coach braking control system, it is characterised in that:
Including wheel speed sensors, accelerator pedal device and sensor, brake pedal apparatus and sensor, motor braking system, gas
Pressure brakes and controller VCU；
After described motor braking system includes being arranged on the battery at automobile front-axle and battery management system (24) and being arranged on
Main reducing gear (39) on axle and motor (40), be provided with electric machine controller (37) on described motor (40)；
Described Pneumatic braking system includes being sequentially connected with group by air compressor (1), feather valve (3) and four-loop protection valve (6)
The pneumatic module processed become, conventional service brake gas circuit, Anti-slip regulation braking gas circuit and parking braking gas circuit；
The described conventional service brake gas circuit of front axle is: four-loop protection valve (6), front gas receiver (9), brake pedal apparatus (12)
Epicoele, the low-pressure admission mouth of front dual control proportion relay valve (16) and three-way valve I (22) be sequentially connected with, three-way valve I (22)
Two gas outlets are sequentially connected with left and right front-wheel ABS electromagnetic valve and left and right front brake chamber respectively；
The described conventional service brake gas circuit of rear axle is: four-loop protection valve (6), rear gas receiver (8), brake pedal apparatus (12)
Cavity of resorption, the low-pressure admission mouth of rear dual control proportion relay valve (41) and three-way valve II (38) be sequentially connected with, three-way valve II (38)
Two gas outlets be sequentially connected with left and right trailing wheel ABS electromagnetic valve and left and right rear brake chamber respectively；
The high pressure admission mouth of described front dual control proportion relay valve (16) is directly connected with front gas receiver (9)；
The high pressure admission mouth of described rear dual control proportion relay valve (41) is directly connected with rear gas receiver (8)；
Brake chamber pressure transducer it is mounted on described brake chamber；
Described sensor, battery management system (24), electric machine controller (37), dual control proportion relay valve, three-way valve, wheel ABS electricity
Magnet valve all controls to be connected with controller VCU.
2. the most intelligent pure electric coach braking control system, it is characterised in that:
Described Anti-slip regulation service brake gas circuit is:
One gas outlet of four-loop protection valve (6), front gas receiver (9), the epicoele of brake pedal apparatus (12), front active pressure
Control module and three-way valve I (22) are sequentially connected with, two gas outlets of three-way valve I (22) respectively with left and right front-wheel ABS electromagnetism
Valve and left and right front brake chamber are sequentially connected with；
Another gas outlet of four-loop protection valve (6), rear gas receiver (8), the cavity of resorption of brake pedal apparatus (12), rear actively pressure
Power control module and three-way valve II (38) are sequentially connected with, two gas outlets of three-way valve II (38) respectively with left and right trailing wheel ABS
Electromagnetic valve and left and right rear brake chamber are sequentially connected with；
Described active pressure control module controls to be connected with controller VCU.
3. the most intelligent pure electric coach braking control system, it is characterised in that:
Described active pressure control module is composed in series by a quick release valve and a linear solenoid valve, described quick release valve and gas storage
Cylinder is connected, and affiliated linear solenoid valve is connected with three-way valve, the phase of the automatically controlled signal Interface and Controler VCU of described linear solenoid valve
Automatically controlled signal interface is answered to be connected.
4. the most intelligent pure electric coach braking control system, it is characterised in that:
Described parking braking gas circuit is: four-loop protection valve (6) is connected with three-way valve III (43), and two of three-way valve III (43) go out
QI KOU is sequentially connected with left and right trailing wheel ABS electromagnetic valve and left and right rear brake chamber respectively；
Described three-way valve III (43) controls to be connected with controller VCU.
5. the most intelligent pure electric coach braking control system, it is characterised in that:
Described control system also includes that range finder module and data analysis module, described range finder module are connected with data analysis module,
Described range finder module is made up of microwave radar, laser radar and video system, is used for image and the road providing road ahead real-time
Condition information；Described data analysis module is made up of single-chip microcomputer and related circuit, and described data analysis module controls with controller VCU
Connect.
6. the most intelligent pure electric coach braking control system, it is characterised in that:
Described control system also includes that vehicle body stable type controls assembly, the yaw velocity being arranged on back axle midline sense
Device (31), the steering wheel angle sensor (30) being arranged on wheel steering post and be arranged on and automobile longitudinal direction of advance
Lateral acceleration sensor (29) composition at vertical rear axle, described yaw-rate sensor (31), steering wheel angle pass
The signal output part of sensor (30) and lateral acceleration sensor (29) signal receiving end with vehicle control device VCU respectively is connected
Connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620693070.4U CN205769259U (en) | 2016-07-04 | 2016-07-04 | Intelligence pure electric coach braking control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620693070.4U CN205769259U (en) | 2016-07-04 | 2016-07-04 | Intelligence pure electric coach braking control system |
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| CN205769259U true CN205769259U (en) | 2016-12-07 |
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| CN201620693070.4U Expired - Fee Related CN205769259U (en) | 2016-07-04 | 2016-07-04 | Intelligence pure electric coach braking control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043263A (en) * | 2016-07-04 | 2016-10-26 | 吉林大学 | Intelligent braking control system of pure electric passenger car and control method of intelligent braking control system |
| CN106802650A (en) * | 2017-03-28 | 2017-06-06 | 吉林大学 | Electric motor coach integration control hardware is in ring test platform and method of testing |
| CN108657150A (en) * | 2018-07-21 | 2018-10-16 | 华东交通大学 | A kind of electric vehicle brake control system with active safety |
| CN109050508A (en) * | 2018-07-23 | 2018-12-21 | 南京金龙客车制造有限公司 | A kind of car tailgating-proof system and its control method |
| CN109367528A (en) * | 2018-08-28 | 2019-02-22 | 南京金龙客车制造有限公司 | A kind of automatic parking system and its control method |
-
2016
- 2016-07-04 CN CN201620693070.4U patent/CN205769259U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043263A (en) * | 2016-07-04 | 2016-10-26 | 吉林大学 | Intelligent braking control system of pure electric passenger car and control method of intelligent braking control system |
| CN106802650A (en) * | 2017-03-28 | 2017-06-06 | 吉林大学 | Electric motor coach integration control hardware is in ring test platform and method of testing |
| CN108657150A (en) * | 2018-07-21 | 2018-10-16 | 华东交通大学 | A kind of electric vehicle brake control system with active safety |
| CN109050508A (en) * | 2018-07-23 | 2018-12-21 | 南京金龙客车制造有限公司 | A kind of car tailgating-proof system and its control method |
| CN109367528A (en) * | 2018-08-28 | 2019-02-22 | 南京金龙客车制造有限公司 | A kind of automatic parking system and its control method |
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Granted publication date: 20161207 Termination date: 20180704 |