CN109606125A - A kind of new energy commercial vehicle brake energy recovering system and control method - Google Patents
A kind of new energy commercial vehicle brake energy recovering system and control method Download PDFInfo
- Publication number
- CN109606125A CN109606125A CN201811570181.6A CN201811570181A CN109606125A CN 109606125 A CN109606125 A CN 109606125A CN 201811570181 A CN201811570181 A CN 201811570181A CN 109606125 A CN109606125 A CN 109606125A
- Authority
- CN
- China
- Prior art keywords
- braking
- torque
- brake
- recycling
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004064 recycling Methods 0.000 claims abstract description 70
- 238000011084 recovery Methods 0.000 claims abstract description 46
- 241000153246 Anteros Species 0.000 claims abstract description 40
- 238000004891 communication Methods 0.000 claims abstract description 17
- 230000001172 regenerating effect Effects 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 22
- 230000008054 signal transmission Effects 0.000 claims description 4
- 210000001061 forehead Anatomy 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003387 muscular Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Classifications
-
- 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
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
- B60L7/26—Controlling the braking effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
- B60T8/28—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels responsive to deceleration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/362—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in pneumatic systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The present invention relates to a kind of new energy commercial vehicle brake energy recovering system and control methods；The recovery system includes mechanical braking system, driving motor and control system, power battery and control system, entire car controller and CAN communication system, energy regenerating and control system；Wherein, the mechanical braking system includes gas receiver, brake pedal, ABS system, brake chamber, and the brake pedal is with braking depth collecting device and brake valve；The driving motor and control system include driving motor and electric machine controller；The energy regenerating and control system include air chamber pressure sensor, antero posterior axis gas path control valve, recovery system controller.The present invention is designed by new structure, keeps energy recycling system compatible in existing vehicle braking and ABS system, has realistic feasibility, solves the problems, such as to influence vehicle braking economy in the prior art, has positive technical meaning.
Description
Technical field
The present invention relates to a kind of new energy commercial vehicle brake energy recovering system and control methods, belong to auto parts and components skill
Art field.
Background technique
Brake energy recovery is one of energy-efficient important method of new-energy automobile, i.e. vehicle in deceleration or braking process,
Under the premise of guaranteeing safety, is preferentially braked using driving motor and the kinetic energy of vehicle is converted into electric energy, be stored in power battery.
While improving vehicle economy, reduce the abrasion of mechanical braking bring braking device.
Due to caused by mechanical mechanism, the braking system of conventional truck, when brake pedal is to certain depth, mechanical braking meeting
It is applied to vehicle front and back axle by a certain percentage, is unfavorable for Brake energy recovery.In order to improve Brake energy recovery rate, design one
Kind mechanical braking and the adjustable brake energy recovering system of electricity recycling braking ratio and its method are very necessary.Antero posterior axis system
Force share ratio directly affects braking safety, and the adjustable energy recycling system of antero posterior axis braking moment equally has important meaning
Justice.
In the patent document that publication No. is CN106043263A, a kind of braking control system is disclosed.Although having reason
By upper energy recovery function, but does not have under the conditions of current technology and implement meaning.The braking control system is used and is replaced
For the method for existing braking system, ABS function is realized using included ABS solenoid valve, needs the braking system to original vehicle
System does subversive change, this is disagreed with the requirement of current art specification.Existing technical specification is to braking and ABS system
The independence and integrity demands of system are very high, if it is desired that the value that there is brake energy recovering system reality to implement, just must
The braking of vehicle and ABS system must be made to keep independent from framework, implementation process is also necessarily independent of braking and ABS system.
Therefore, design it is a kind of can braking with vehicle and ABS system keep independently operated new energy commercial vehicle Brake Energy
Recovery system is measured, is those skilled in the art's urgent problem to be solved.
Summary of the invention
In the prior art, the brake energy recovering system design scheme having already appeared, can not with existing braking system and
ABS system independent operating is needed to be realized with alternative, be contradicted with existing technical specification, it is difficult to really implemented；Or work as
Electricity recycling braking is just exited when ABS, reduces the rate of recovery of braking energy.To solve this problem, the present invention provides a kind of new energy
Source commercial vehicle brake energy recovering system is designed by new structure, keeps energy recycling system compatible in existing vehicle system
Dynamic and ABS system has realistic feasibility.
The present invention adopts the following technical solutions:
A kind of new energy commercial vehicle brake energy recovering system, comprising: mechanical braking system, driving motor and control system are moved
Power battery and control system, entire car controller and CAN communication system, energy regenerating and control system, it is characterised in that:
The mechanical braking system includes gas receiver, brake pedal, ABS system, brake chamber, the brake pedal have with it is whole
The braking depth collecting device of vehicle controller signal connection；
The driving motor and control system include the driving motor for generating recycling torque and the finger for receiving entire car controller
Enable, control the electric machine controller of driving motor；
The energy regenerating and control system include air chamber pressure sensor, antero posterior axis gas path control valve, recovery system controller；
The air chamber pressure sensor is mounted on brake chamber, for measuring vehicle antero posterior axis air chamber pressure, and measuring signal is passed
It is defeated by recovery system controller；The antero posterior axis gas path control valve air inlet terminates brake pedal, and outlet terminates ABS system electromagnetism
Valve.
Preferably, the power battery and control system include for store the power battery to recover energy and with vehicle control
The battery controller of device communication processed；
The entire car controller and CAN communication system include entire car controller and the CAN communication system for signal transmission；
The braking depth collecting device is the angular transducer for acquiring pedal shaft rotational angle；
The antero posterior axis gas path control valve is long general formula solenoid valve, and brake pedal and abs valve are long logical when system does not control；
The driving motor is that can make driving motor also the permanent magnet synchronous motor of braking energy can be recycled.
A kind of control method of above-mentioned new energy commercial vehicle brake energy recovering system, which is characterized in that including walking as follows
It is rapid:
S1. entire car controller acquires brake pedal depth；
S2. recovery system controller is according to total braking moment needed for tread depths parsing；
S3. braking moment is divided into recycling torque and mechanical braking force according to braking torque distribution strategy by recovery system controller
Square, mechanical braking torque are divided into front axle mechanical braking torque and rear axle mechanical braking torque again；
S4. entire car controller is modified recycling torque according to Vehicular battery state and ABS state；
S5. recovery system controller carries out dynamic regulation to mechanical braking torque according to revised recycling torque.
Preferably, in the step S2, required total braking moment is parsed method particularly includes:
1) tread depths and antero posterior axis air chamber pressure relation curve have been formulated；According to the curve, needed for obtaining under certain tread depths
The air chamber pressure wanted, this curve are that antero posterior axis ideal braking force distribution relationship reflects to the data on antero posterior axis gas chamber；
2) according to function, calculate front axle, rear axleCorresponding braking moment；
Wherein, T is the moment of friction Nm of brake；P- gas chamber pressure pa；The effective skin membrane area ㎡ of S- gas chamber；I- lever ratio, r-
The operating radius m of brake drum or brake disc；Brake Factor；
3) basis, calculate required total braking moment under certain tread depths。
Preferably, in the step S3, recycling torque threshold value has been formulated, threshold value is fallen according to total braking moment size
Section it is different, calculate the distribution of electricity recycling torque and mechanical force moment, the distribution of antero posterior axis mechanical braking, guaranteeing brake safe
In the case where, braking energy is recycled to greatest extent.
Preferably, in the step S3, braking torque distribution strategy specifically:
1) setting recycling torque threshold value:、、, above-mentioned recycling torque threshold settings principle is as follows:For vehicle
Single rear axle braking closes on total braking moment of locking,For front axle mechanical braking rear axle electric braking, rear axle closes on the total of locking
Braking moment；For front axle mechanical braking, rear axle is electrically and mechanically braked jointly, total braking moment of the critical locking of rear axle；
2) whenWhen, it pays the utmost attention to electric braking and recovers energy, braking moment is mentioned by the driving motor of rear axle
For that is,(Electricity recycling torque)；
3) whenWhen, while paying the utmost attention to electric braking, electricity recycles remaining braking energy, by front axle machine
Tool braking absorbs, i.e.,(Motor recycles torque,
For front axle mechanical braking torque)；
4) whenWhen, electricity recycles remaining braking energy, it is absorbed jointly by front axle, rear axle mechanical braking,
I.e.(Motor recycles torque,For front axle mechanical braking torque,For rear axle mechanical braking torque)；
5) work as braking momentWhen, electric braking exits, and braking moment is provided by antero posterior axis mechanical braking, i.e.,。
Preferably, in the step S4, when battery capacity SOC is lower than setting threshold value lower limit A, total power electricity system is carried out
Dynamic recycling；When SOC is not less than threshold value lower limit A not higher than setting high thresholdhigh B again, drop power electric braking recycling, amendment
Recycle torque；When SOC is higher than setting high thresholdhigh B, recycled without electric braking；If ABS solenoid valve is failure to actuate, i.e. vehicle
Without locking phenomenon, not to recycling torque amendment；
Set two kinds of critical value H > L；When ABS electromagnetism valve events, and air chamber pressure is more than or equal to H, not to recycling torque amendment；When
ABS electromagnetism valve events, and air chamber pressure is greater than L and is less than H, drop volume amendment recycling torque again；When ABS electromagnetism valve events, and gas chamber
Pressure is less than or equal to L, and recycling torque is 0.
Preferably, in the step S5, recovery system controller is closed according to the tread depths and antero posterior axis air chamber pressure
It is curve, adjusts mechanical braking torque by adjusting air chamber pressure；It is mutually coordinated by electromechanical braking, guarantee total braking moment
It is constant；It is mutually coordinated by front and back shaft mechanical, guarantee ideal antero posterior axis braking force distribution relationship.
Preferably, in the step S5, recovery system controller is according to revised recycling torque to mechanical braking torque
Carry out dynamic regulation, method are as follows:
The recycling torque of forehead point will drop, according to front axle/ rear axleRatio be allocated, by control before
Rear axle recovery system solenoid valve is realized.
The present invention has the advantage that
(1) by the way that mechanical braking system to be independently arranged, keep the present invention compatible in existing braking system, be both easier to comply with
The requirement of technical specification, and convenient for making full use of existing component when implementing；Make implementation of the invention premised on guaranteeing safety；
(2) allocation proportion that braking moment and mechanical braking torque are recycled by dynamic regulation electricity can be improved braking energy and return
It produces effects rate；
(3) it does not immediately exit from electricity recycling braking when ABS starting using intelligent control by setting threshold value, improves energy and return
Yield；When vehicle-state is unsatisfactory for Brake energy recovery condition, does not start electricity recycling braking only with mechanical braking and guarantee row
Vehicle safety.
Detailed description of the invention
Fig. 1 is the embodiment of the present invention architecture principle schematic diagram；
Fig. 2 is control method flow diagram of the embodiment of the present invention；
Fig. 3 is tread depths and antero posterior axis air chamber pressure relation curve schematic diagram in the embodiment of the present invention；
Wherein: 1. brake pedals, 2. front axle gas path control valves, 3. rear axle gas path control valves, gas chamber before 4. right sides, 5. right rear gas chamber,
6. front axle brake gas receiver, 7. rear axles braking gas receiver, 8.ABS controller, 9. driving motors, 10. recovery system controllers,
11. electric machine controller, 12. battery controllers, 13. entire car controllers, 14. power batteries, 15. left back ABS solenoid valves, after 16.
Axis relay valve, ABS solenoid valve behind 17. right sides, 18. left front gas chambers, 19. left front ABS solenoid valves, 20. front axle quick release valves, before 21. right sides
ABS solenoid valve, air chamber pressure sensor before 24., 25. rear gas chamber's pressure sensors.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, the present embodiment is a kind of new energy commercial vehicle brake energy recovering system, comprising: muscular energy brake system
System, driving motor and control system, power battery and control system, entire car controller and CAN communication system, energy regenerating and control
System processed；
The mechanical braking system applies existing complete braking system, only makes the change in wiring connection, does not change original structure
And working principle；Including gas receiver, brake pedal 1, ABS system, brake chamber；The brake pedal 1 has and full-vehicle control
The braking depth collecting device of 13 signal of device connection.
The braking depth collecting device is the angular transducer for acquiring pedal shaft rotational angle, is used in the present embodiment
It is common directly to step on formula main brake valve.The brake valve is driven by brake pedal 1, including tetra- mouths of a1, a2, b1, b2, four mouths
Respectively rear axle braking air inlet, front axle brake air inlet, rear axle brake gas outlet, front axle brake gas outlet；In the present embodiment
Using common WG8710360003 model.
The driving motor and control system include generating the driving motor 9 of recycling torque (being also electric braking torque) and using
In receive entire car controller 13 instruction, control driving motor 9 electric machine controller 11；The driving motor 9 is that can drive
The permanent magnet synchronous motor of braking energy also can be recycled in motor；
The power battery and control system include for storing the power battery 14 to recover energy and leading to entire car controller 13
The battery controller 12 of news；
The entire car controller and CAN communication system include entire car controller 13 and the CAN communication system for signal transmission；It is whole
Vehicle controller 13 uses the existing universal models of commercial vehicle, uses WG8711710040 in the present embodiment；It is mainly used for: acquisition system
Dynamic 1 signal of pedal, is sent to recovery system controller；Receive the valve actuation of the electric quantity signal, abs controller 8 of battery controller 12
Make signal, processing is modified to the recycling torque signals that recovery system controller is sent, and power is recycled into revised braking
Square is sent to electric machine controller 11 and recovery system controller；The entire car controller 13 and each component being connect, pass through
CAN communication system carries out signal transmission.
The energy regenerating and control system include air chamber pressure sensor, antero posterior axis gas path control valve 3, recovery system control
Device processed；The air chamber pressure sensor is mounted on brake chamber, for measuring vehicle antero posterior axis air chamber pressure, and pressure is defeated
Recycling system controller is given out；3 air inlet of antero posterior axis gas path control valve terminates brake pedal 1, and outlet terminates ABS system electromagnetism
Valve.The recovery system controller uses the same type product of entire car controller, corresponding under 1 depth of brake pedal for parsing
Total braking moment, distribute electricity recycling torque and mechanical braking torque, and receive amendment feed back according to battery status recycling
Torque carries out dynamic regulation.Wherein electricity recycling torque is sent to electric machine controller 11 by entire car controller 13 and controls motor recycling
Torque executes, and mechanical braking torque controls gas path on-off by control valve and executes.
The antero posterior axis gas path control valve 3 is long general formula solenoid valve, and brake pedal 1 and abs valve are long when system does not control
It is logical；
The outlet side of the front axle brake gas receiver 6 and the a2 mouth of brake pedal 1 are attached by tracheae；The braking
The b2 mouth and the inlet end of front axle gas path control valve 2 of pedal 1 are attached by tracheae；The front axle gas path control valve 2
Outlet side and the inlet end of front axle quick release valve 20 are attached by tracheae；The outlet side of the front axle quick release valve 20 and front axle
The inlet end of ABS solenoid valve (19,21) is attached by tracheae；The outlet side of the preceding ABS solenoid valve (19,21) is with before
The inlet end of brake chamber (4,18) is attached by tracheae；The outlet side of the rear axle braking gas receiver 7 is stepped on braking
1a1 mouthfuls of plate are attached by tracheae；The inlet end of b1 mouthfuls of the master cylinder and rear axle gas path control valve 3 by tracheae into
Row connection；The outlet side of the rear axle gas path control valve 3 and the control terminal of rear axle relay valve 16 are attached by tracheae；Institute
Another outlet side of rear axle braking gas receiver 7 and the inlet end of rear axle relay valve 16 stated are attached by tracheae；Described
The outlet side of rear axle relay valve 16 and the inlet end of rear ABS solenoid valve (15,17) are attached by tracheae；The rear ABS
The outlet side of solenoid valve (15,17) and the inlet end of rear brake chamber (5,19) are attached by tracheae.
Wherein the abs controller 8 is connect with abs control valve (15,17,19,21) signal, controls its movement, and whole
Vehicle controller 13 is connected by CAN communication.
Wherein the recovery system controller 10 is connect with air chamber pressure sensor (24,25), acquires air chamber pressure；With
Entire car controller 13 is connected by CAN communication；With antero posterior axis gas path control valve 3(2,3).
Wherein the electric machine controller 11 is connect with power motor and 14 high-voltage electrical apparatus of power battery；And electric machine controller
11 are connect with entire car controller 13 by CAN communication.
The wherein battery controller 12 and entire car controller 13CAN communication connection.
Specifically process is as follows, and when driver's brake pedal 1, entire car controller 13 acquires 1 signal of brake pedal
And it is sent to recovery system controller, the braking of recovery system controller distribution machinery and electric braking torque, electric braking torque are sent
To entire car controller 13, entire car controller 13 issues electric machine controller 11, applies braking moment by driving motor 9, is braked,
Brake energy recovery is stored in power battery 14.Recovery system control valve antero posterior axis is according to the mechanical braking torque pair distributed
Control is opened and closed in recovery system control valve, and control process, as feedback signal, forms pressure closed loop by air chamber pressure sensor
Control.
With increasing for battery SOC, 13 pairs of recycling torques of entire car controller carry out drop volume amendment, while recovery system controls
Device increases corresponding air chamber pressure to supplement, protects according to the drop volume of electricity recycling torque by controlling the opening and closing of recovery system control valve
It is constant to demonstrate,prove braking moment.
Likewise, 13 pairs of electricity recycling torques of entire car controller carry out at drop volume according to the size of ABS state and air chamber pressure
Reason, dropped amount control valve events by recovery system, increase corresponding air chamber pressure to supplement, and guarantee that braking moment is constant.
A kind of control method of new energy commercial vehicle brake energy recovering system described in the present embodiment, which is characterized in that packet
Include following steps:
S1. entire car controller 13 acquires 1 depth of brake pedal；
It is collected to step on since the braking depth collecting device is the angular transducer for acquiring pedal shaft rotational angle
Plate depth is with angle (°) Lai Jiliang.
S2. recovery system controller is according to total braking moment needed for tread depths parsing；
S3. braking moment is divided into recycling torque and mechanical braking force according to braking torque distribution strategy by recovery system controller
Square, mechanical braking torque are divided into front axle mechanical braking torque and rear axle mechanical braking torque again；
S4. entire car controller 13 is modified recycling torque according to Vehicular battery state and ABS state；
S5. recovery system controller carries out dynamic regulation to mechanical braking torque according to revised recycling torque.
In the step S2, required total braking moment is parsed method particularly includes:
1) tread depths and antero posterior axis air chamber pressure relation curve have been formulated；According to the curve, needed for obtaining under certain tread depths
The air chamber pressure wanted, this curve are that antero posterior axis ideal braking force distribution relationship reflects to the data on antero posterior axis gas chamber；
2) according to function, calculate front axle, rear axleCorresponding braking moment；
Wherein, T is the moment of friction Nm of brake；P- gas chamber pressure pa；The effective skin membrane area ㎡ of S- gas chamber；I- lever ratio, r-
The operating radius m of brake drum or brake disc；Brake Factor；
3) basis, calculate required total braking moment under certain tread depths。
In the step S3, recycling torque threshold value has been formulated, the section of threshold value is fallen according to total braking moment size
Difference calculates the distribution of electricity recycling torque and mechanical force moment, the distribution of antero posterior axis mechanical braking, the case where guaranteeing brake safe
Under, braking energy is recycled to greatest extent.
In this step, braking torque distribution strategy specifically:
1) setting recycling torque threshold value:、、, above-mentioned recycling torque threshold settings principle is as follows:For vehicle
Single rear axle braking closes on total braking moment of locking,For front axle mechanical braking rear axle electric braking, rear axle closes on the total of locking
Braking moment；For front axle mechanical braking, rear axle is electrically and mechanically braked jointly, total braking moment of the critical locking of rear axle；
2) whenWhen, it pays the utmost attention to electric braking and recovers energy, braking moment is mentioned by the driving motor of rear axle
For that is,(Electricity recycling torque)；
3) whenWhen, while paying the utmost attention to electric braking, electricity recycles remaining braking energy, by front axle machine
Tool braking absorbs, i.e.,(Motor recycles torque,
For front axle mechanical braking torque)；
4) whenWhen, electricity recycles remaining braking energy, it is absorbed jointly by front axle, rear axle mechanical braking,
I.e.(Motor recycles torque,For front axle mechanical braking torque,For rear axle mechanical braking torque)；
5) work as braking momentWhen, electric braking exits, and braking moment is provided by antero posterior axis mechanical braking, i.e.,。
In the step S4, when battery capacity SOC is lower than setting threshold value lower limit A, total power (electric machine controller is carried out
Permitted maximum power) electric braking recycling；When SOC is not less than threshold value lower limit A not higher than setting high thresholdhigh B again,
The recycling of power electric braking, amendment recycling torque drop；When SOC is higher than setting high thresholdhigh B, recycled without electric braking；If
ABS solenoid valve is failure to actuate, i.e. vehicle is without locking phenomenon, not to recycling torque amendment；(thresholding A is set in the present embodiment as 75%, B
For 98%)
Set two kinds of critical value H > L；When ABS electromagnetism valve events, and air chamber pressure is more than or equal to setting value H, not to recycling torque
Amendment；When ABS electromagnetism valve events, and air chamber pressure is greater than the set value L and is less than setting value H, drop volume amendment recycling torque again；When
ABS electromagnetism valve events, and air chamber pressure is less than or equal to setting value L, recycling torque is 0.(in the present embodiment H setting value be 4bar,
L is 1.5bar)
In the step S5, recovery system controller carries out dynamic tune to mechanical braking torque according to revised recycling torque
Section, method are as follows:
Recovery system controller according to the tread depths and antero posterior axis air chamber pressure relation curve, by adjust air chamber pressure come
Adjust mechanical braking torque；It is mutually coordinated by electromechanical braking, guarantee that total braking moment is constant；It is mutually assisted by front and back shaft mechanical
It adjusts, guarantees ideal antero posterior axis braking force distribution relationship；
The recycling torque of forehead point will drop, according to front axle/ rear axleRatio be allocated, by control before
The recovery system solenoid valve of rear axle is realized.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
A variety of modifications of embodiment will be readily apparent to those skilled in the art, it is as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention, not be described in detail
The part presented with partial enlargement is the prior art, herein without repeating.Therefore, the present invention is not intended to be limited to herein
Shown in these embodiments, and be to fit to the widest scope consistent with principles disclosed herein and feature.
Claims (9)
1. a kind of new energy commercial vehicle brake energy recovering system, comprising: mechanical braking system, driving motor and control system,
Power battery and control system, entire car controller and CAN communication system, energy regenerating and control system, it is characterised in that:
The mechanical braking system includes gas receiver, brake pedal (1), ABS system, brake chamber, brake pedal (1) band
There is the braking depth collecting device connecting with entire car controller (13) signal；
The driving motor and control system include generating the driving motor (9) of recycling torque and for receiving entire car controller
(13) electric machine controller (11) of instruction, control driving motor (9)；
The energy regenerating and control system include air chamber pressure sensor, antero posterior axis gas path control valve, recovery system controller
(10)；The air chamber pressure sensor is mounted on brake chamber, is believed for measuring vehicle antero posterior axis air chamber pressure, and by measurement
Number it is transferred to recovery system controller (10)；The antero posterior axis gas path control valve air inlet terminates brake pedal (1), outlet termination
ABS system solenoid valve.
2. brake energy recovering system according to claim 1, which is characterized in that the power battery and control system packet
Include the battery controller (12) for storing the power battery to recover energy (14) and with entire car controller (13) communication；
The entire car controller and CAN communication system include entire car controller (13) and the CAN communication system for signal transmission；
The braking depth collecting device is the angular transducer for acquiring pedal shaft rotational angle；
The antero posterior axis gas path control valve is long general formula solenoid valve, and brake pedal (1) and abs valve are long logical when system does not control；
The driving motor (9) is that can make driving motor (9) also the permanent magnet synchronous motor of braking energy can be recycled.
3. a kind of control method of brake energy recovering system as described in claim 1, which comprises the steps of:
S1. entire car controller acquires brake pedal depth；
S2. recovery system controller is according to total braking moment needed for tread depths parsing；
S3. braking moment is divided into recycling torque and mechanical braking force according to braking torque distribution strategy by recovery system controller
Square, mechanical braking torque are divided into front axle mechanical braking torque and rear axle mechanical braking torque again；
S4. entire car controller is modified recycling torque according to Vehicular battery state and ABS state；
S5. recovery system controller carries out dynamic regulation to mechanical braking torque according to revised recycling torque.
4. brake energy recovering system according to claim 3, which is characterized in that in the step S2, parse required
Total braking moment method particularly includes:
1) tread depths and antero posterior axis air chamber pressure relation curve have been formulated；According to the curve, needed for obtaining under certain tread depths
The air chamber pressure wanted, this curve are that antero posterior axis ideal braking force distribution relationship reflects to the data on antero posterior axis gas chamber；
2) according to function, calculate front axle, rear axleCorresponding braking moment；
Wherein, T is the moment of friction Nm of brake；P- gas chamber pressure pa；The effective skin membrane area ㎡ of S- gas chamber；I- lever ratio, r-
The operating radius m of brake drum or brake disc；Brake Factor；
3) basis, calculate required total braking moment under certain tread depths。
5. brake energy recovering system according to claim 3, which is characterized in that in the step S3, formulated recycling
Torque threshold value, falls in the difference in threshold value section according to total braking moment size, calculates electricity recycling torque and mechanical force moment
Distribution, the distribution of antero posterior axis mechanical braking recycle braking energy in the case where guaranteeing brake safe to greatest extent.
6. brake energy recovering system according to claim 3, which is characterized in that in the step S3, braking moment point
With strategy specifically:
1) setting recycling torque threshold value:、、, above-mentioned recycling torque threshold settings principle is as follows:For vehicle
Single rear axle braking closes on total braking moment of locking,For front axle mechanical braking rear axle electric braking, rear axle closes on total system of locking
Kinetic moment；For front axle mechanical braking, rear axle is electrically and mechanically braked jointly, total braking moment of the critical locking of rear axle；
2) whenWhen, it pays the utmost attention to electric braking and recovers energy, braking moment is mentioned by the driving motor of rear axle
For that is,(Electricity recycling torque)；
3) whenWhen, while paying the utmost attention to electric braking, electricity recycles remaining braking energy, by front axle machine
Tool braking absorbs, i.e.,(Motor recycles torque,
For front axle mechanical braking torque)；
4) whenWhen, electricity recycles remaining braking energy, is absorbed jointly by front axle, rear axle mechanical braking, i.e.,(Motor recycles torque,For front axle mechanical braking torque,For rear axle mechanical braking torque)；
5) work as braking momentWhen, electric braking exits, and braking moment is provided by antero posterior axis mechanical braking, i.e.,。
7. brake energy recovering system according to claim 3, which is characterized in that in the step S4, work as battery capacity
When SOC is lower than setting threshold value lower limit A, the recycling of total power electric braking is carried out；When SOC is not higher than setting high thresholdhigh B again not
When lower than threshold value lower limit A, drop power electric braking recycling, amendment recycling torque；When SOC is higher than setting high thresholdhigh B, no
Carry out electric braking recycling；If ABS solenoid valve is failure to actuate, i.e. vehicle is without locking phenomenon, not to recycling torque amendment；
Set two kinds of critical value H > L；When ABS electromagnetism valve events, and air chamber pressure is more than or equal to H, not to recycling torque amendment；When
ABS electromagnetism valve events, and air chamber pressure is greater than L and is less than H, drop volume amendment recycling torque again；When ABS electromagnetism valve events, and gas chamber
Pressure is less than or equal to L, and recycling torque is 0.
8. brake energy recovering system according to claim 3, which is characterized in that in the step S5, recovery system control
Device processed adjusts mechanical braking force by adjusting air chamber pressure according to the tread depths and antero posterior axis air chamber pressure relation curve
Square；It is mutually coordinated by electromechanical braking, guarantee that total braking moment is constant；It is mutually coordinated by front and back shaft mechanical, guarantee ideal
Antero posterior axis braking force distribution relationship.
9. brake energy recovering system according to claim 3, which is characterized in that in the step S5, recovery system control
Device processed carries out dynamic regulation, method to mechanical braking torque according to revised recycling torque are as follows: will drop the recycling of forehead point
Torque, according to front axle/ rear axleRatio be allocated, it is real to pass through control antero posterior axis recovery system solenoid valve
It is existing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570181.6A CN109606125B (en) | 2018-12-21 | 2018-12-21 | New energy commercial vehicle braking energy recovery system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570181.6A CN109606125B (en) | 2018-12-21 | 2018-12-21 | New energy commercial vehicle braking energy recovery system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109606125A true CN109606125A (en) | 2019-04-12 |
| CN109606125B CN109606125B (en) | 2023-10-27 |
Family
ID=66011113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811570181.6A Active CN109606125B (en) | 2018-12-21 | 2018-12-21 | New energy commercial vehicle braking energy recovery system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109606125B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4826257A (en) * | 1987-02-28 | 1989-05-02 | Daimler-Benz Aktiengesellschaft | Anti-blocking system for a road vehicle having a hydraulic multi-circuit brake installation |
| CN101407179A (en) * | 2008-11-28 | 2009-04-15 | 清华大学 | Composite braking system having anti-locking brake function and control method |
| CN101979259A (en) * | 2010-09-10 | 2011-02-23 | 奇瑞汽车股份有限公司 | Electric vehicle energy recovery system and control method thereof |
| CN104143011A (en) * | 2013-05-09 | 2014-11-12 | 广州汽车集团股份有限公司 | Braking system matching analysis method and system |
| 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 |
| CN106926711A (en) * | 2017-03-28 | 2017-07-07 | 奇瑞汽车股份有限公司 | A kind of regenerative brake control system and method |
| CN108032848A (en) * | 2018-01-08 | 2018-05-15 | 吉林大学 | A kind of brake power recovering device and its control method |
| CN108545071A (en) * | 2018-04-03 | 2018-09-18 | 中机生产力促进中心 | A kind of regenerating brake control method of hydraulic braking and electric braking Collaborative Control |
| CN108819726A (en) * | 2018-05-04 | 2018-11-16 | 合肥工业大学 | Brake energy recovery control method and system based on brake efficiency consistency |
| CN209305369U (en) * | 2018-12-21 | 2019-08-27 | 中国重汽集团济南动力有限公司 | A kind of new energy commercial vehicle brake energy recovering system |
-
2018
- 2018-12-21 CN CN201811570181.6A patent/CN109606125B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4826257A (en) * | 1987-02-28 | 1989-05-02 | Daimler-Benz Aktiengesellschaft | Anti-blocking system for a road vehicle having a hydraulic multi-circuit brake installation |
| CN101407179A (en) * | 2008-11-28 | 2009-04-15 | 清华大学 | Composite braking system having anti-locking brake function and control method |
| CN101979259A (en) * | 2010-09-10 | 2011-02-23 | 奇瑞汽车股份有限公司 | Electric vehicle energy recovery system and control method thereof |
| CN104143011A (en) * | 2013-05-09 | 2014-11-12 | 广州汽车集团股份有限公司 | Braking system matching analysis method and system |
| 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 |
| CN106926711A (en) * | 2017-03-28 | 2017-07-07 | 奇瑞汽车股份有限公司 | A kind of regenerative brake control system and method |
| CN108032848A (en) * | 2018-01-08 | 2018-05-15 | 吉林大学 | A kind of brake power recovering device and its control method |
| CN108545071A (en) * | 2018-04-03 | 2018-09-18 | 中机生产力促进中心 | A kind of regenerating brake control method of hydraulic braking and electric braking Collaborative Control |
| CN108819726A (en) * | 2018-05-04 | 2018-11-16 | 合肥工业大学 | Brake energy recovery control method and system based on brake efficiency consistency |
| CN209305369U (en) * | 2018-12-21 | 2019-08-27 | 中国重汽集团济南动力有限公司 | A kind of new energy commercial vehicle brake energy recovering system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109606125B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209305369U (en) | A kind of new energy commercial vehicle brake energy recovering system | |
| CN102745183B (en) | Energy-feedback active control type air braking system | |
| Ahn et al. | Analysis of a regenerative braking system for hybrid electric vehicles using an electro-mechanical brake | |
| CN101524995B (en) | Hybrid power car braking coordinated control system and control method thereof | |
| CN102490617B (en) | Hybrid braking system with active auxiliary braking function and control method | |
| US6070953A (en) | Braking system for a vehicle | |
| CN103180184B (en) | Brake control device | |
| CN202686347U (en) | Energy feedback active control air braking system | |
| KR101272515B1 (en) | Auto cruise control method for electric vehicle | |
| KR20150125982A (en) | Method for operating a brake system, brake system in which the method is performed and uses of the brake system | |
| CN103332184A (en) | Electric-hydro complex brake control method for electric vehicle use and controlling device thereof | |
| CN102642474A (en) | Accelerator pedal and brake pedal-based electrically driven automobile feedback brake control method | |
| CN101596869A (en) | Hybrid power passenger car air pressure and regenerative brake coordination control system | |
| CN112677772B (en) | Control method of automobile regenerative braking control system based on electronic hydraulic braking | |
| CN105584374A (en) | Electric automobile energy feedback system based on ABS and energy feedback method | |
| CN102361786A (en) | Brake device for vehicle | |
| Lv et al. | Regenerative braking control algorithm for an electrified vehicle equipped with a by-wire brake system | |
| CN103153724A (en) | Electric vehicle brake control device | |
| CN201030800Y (en) | Motor feedback braking and air-pressure brake combination controlled braking arrangement | |
| CN106828119A (en) | A kind of brakes and braking method for taking into account feedback efficiency and brake efficiency | |
| CN108081960B (en) | Method and system for recovering braking energy of electric automobile | |
| CN109606125A (en) | A kind of new energy commercial vehicle brake energy recovering system and control method | |
| CN204845581U (en) | Electric automobile braking system | |
| CN202378715U (en) | Hybrid braking system with active auxiliary braking function | |
| CN207725229U (en) | A kind of air pressure type braking energy recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |