CN110103916A - Two-wheeled acoustic filed brake energy recovering system of electric vehicle based on double-way check valve and linear exhaust solenoid valve - Google Patents
Two-wheeled acoustic filed brake energy recovering system of electric vehicle based on double-way check valve and linear exhaust solenoid valve Download PDFInfo
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- CN110103916A CN110103916A CN201910429062.7A CN201910429062A CN110103916A CN 110103916 A CN110103916 A CN 110103916A CN 201910429062 A CN201910429062 A CN 201910429062A CN 110103916 A CN110103916 A CN 110103916A
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- driving wheel
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- brake
- valve
- solenoid valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
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- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
Abstract
The present invention provides a kind of two-wheeled acoustic filed brake energy recovering system of electric vehicle based on double-way check valve and linear exhaust solenoid valve, belong to electric vehicle brake power recovery technology field, the program is directed to the characteristics of two-wheeled acoustic filed electric bicycle drive wheel motor braking power Independent adjustable, by having based on the secondary air accumulator of increase in air pressure ABS solenoid valve decoupling type brake energy recovering system, switch electromagnetic valve, triple valve, driving wheel double-way check valve, the linear exhaust solenoid valve of drive shaft, the components such as driving wheel brake-pressure sensor, each driving wheel braking gas circuit is set to all have double back line structure, this makes it in Brake energy recovery, the high gas source of an air pressure may be selected and provide high pressure gas for each driving wheel brake chamber, when continuously being braked present in existing scheme to efficiently solve, because of the relatively low bring driving wheel of bleed pressure Coupling braking force response rate is slow, and lags behind the critical issue of demand brake force.
Description
Technical field
The invention belongs to electric vehicle brake power recovery technology fields, and in particular to one kind is based on double-way check valve and linearly
The two-wheeled acoustic filed brake energy recovering system of electric vehicle of exhaust solenoid valve.
Background technique
With getting worse for environmental pollution and energy security problem, electric vehicle is increasingly valued by people, braking
Energy recycling system is one of energy-efficient key means of electric vehicle, and energy of the script consumption in friction catch can be passed through electricity by it
Machine is recycled and is used, as document " decoupling type brake energy recovering system research " based on EMB (Yang Kun, Gao Song, Wang Jie,
Equal study [J] automobile engineering, 2016,38 (8): 1072-1079. based on the decoupling type brake energy recovering system of EMB) institute
It states, 30% or so of energy needed for this portion of energy can account for driving vehicle.
Currently, brake energy recovering system can be divided into manifold type and two kinds of decoupling type, manifold type braking according to working principle
Though energy recycling system without the arrangement of the former vehicle braking system of change, has, brake feel is poor, Brake energy recovery rate is low
Disadvantage, application gradually decreases at present.
Decoupling type brake energy recovering system can be driven by the coupling of mechanical braking force and motor braking power accurately to meet
The braking requirement for the person of sailing has the advantage that brake feel is good, Brake energy recovery rate is high.When motor braking power can be fully met
When operator brake demand, brake force is provided by motor braking completely, when motor braking power cannot fully meet operator brake
When demand, vehicle brake force is provided jointly by motor braking and mechanical braking, therefore the conjunction of motor braking power and mechanical braking force
The demand brake force that can power accurately track driver just becomes the key for influencing decoupling type brake energy recovering system effect.
For electric commercial vehicle, since complete vehicle weight is larger, shadow of the Brake energy recovery effect to vehicle economy
Sound is just particularly important, while from reduction system cost, the angle of development cost and system reform workload, currently,
Studying more electric commercial vehicle decoupling type brake energy recovering system scheme is document " integral new-energy passenger URBS air pressure ABS electricity
Magnet valve failure analysis and improvement " (Yang Kun, Ma Chao, Guo Dong wait the URBS air pressure ABS solenoid valve failure analysis of integral new-energy passenger and change
Into [J] Guangxi University journal (natural science edition), 2017,42 (5): 1647-1656.) mention in a text based on air pressure ABS
The decoupling type brake energy recovering system of solenoid valve;This scheme has at low cost, the advantage of Yi Shixian, but finds under study for action
There are the following problems: the adjustment speed of brake chamber pressure depends on the difference of air accumulator gas pressure and brake chamber gas pressure
Value, when continuously braking number is greater than twice when driving, pressure can be substantially reduced, and continuously brake in air accumulator number
More, pressure decline is bigger, and the adjustment speed of brake chamber pressure can be substantially reduced at this time, and then make brake energy recovering system
The coupling brake force for being applied to vehicle can lag behind demand brake force, thus bring brake feel different from conventional braking system,
And it may cause the serious problems such as braking distance is elongated.
In addition, the driving method of electric vehicle can be divided into traditional centralized driving mode and distributed driving method, with concentration
Driving method is compared, and distribution driving has the advantages such as transmission efficiency high, space layout is flexible, dynamic property is strong, good economy performance, together
When also have driving wheel motor braking power have Independent adjustable advantage, this for further increase its Brake energy recovery rate and
Insensitivity provides the foundation, therefore develops the decoupling type Brake energy recovery for being suitable for distributed new electric commercial vehicle
System has stronger practical value.
Summary of the invention
The present invention is having the decoupling type brake energy recovering system scheme based on air pressure ABS solenoid valve regarding to the issue above
On the basis of a kind of two-wheeled acoustic filed electric vehicle brake power based on double-way check valve and linear exhaust solenoid valve be provided return
Receipts system in the program, passes through and increases secondary air accumulator (3) in existing brake energy recovering system, switch electromagnetic valve (5), drives
The linear exhaust solenoid valve of moving axis (7), the first triple valve (8), drive shaft relay valve (9), the second triple valve (10), right driving wheel are double
Logical check valve (11), right driving wheel brake-pressure sensor (17), left driving wheel brake-pressure sensor (22), left driving wheel are double
The components such as logical check valve (28), right non-driving wheel brake-pressure sensor (41) and brake pedal displacement sensor (45), make a left side,
There are two independent high-pressure air source and double back line structures for right driving wheel brake circuit tool, and when triggering Brake energy recovery,
The gas source that can select an air pressure high by control system provides high pressure gas for each driving wheel brake chamber, to effectively solve
When continuous braking, the problem of relatively low bring air pressure brake-force control speed of bleed pressure reduces.
It is a kind of that system is recycled based on the two-wheeled acoustic filed electric vehicle brake power of double-way check valve and linear exhaust solenoid valve
System is by brake pedal (1), brake valve (2), secondary air accumulator (3), main air accumulator (4), switch electromagnetic valve (5), air compressor
(6), the linear exhaust solenoid valve of drive shaft (7), the first triple valve (8), drive shaft relay valve (9), the second triple valve (10), the right side
Driving wheel double-way check valve (11), right driving wheel wheel speed sensors (14), right driving wheel driving motor and transmission device (15), the right side
Drive wheel electric machine controller (16), right driving wheel brake-pressure sensor (17), right driving wheel brake chamber (18), right drive
Driving wheel ABS solenoid valve (19), left driving wheel ABS solenoid valve (20), left driving wheel brake chamber (21), left driving wheel brake pressure
Sensor (22), left driving wheel drive motor controller (23), left driving wheel driving motor and transmission device (24), left driving wheel
Wheel speed sensors (25), left driving wheel double-way check valve (28), battery management system (29), entire car controller (30), braking control
It is device (31) processed, nonpowered axle relay valve (32), third triple valve (33), left non-driving wheel wheel speed sensors (36), left non-driven
Take turns brake chamber (37), left non-driving wheel ABS solenoid valve (38), right non-driving wheel ABS solenoid valve (39), right non-driving wheel system
Take offence room (40), right non-driving wheel brake-pressure sensor (41), right non-driving wheel wheel speed sensors (42), brake pedal displacement
Sensor (45) composition.
The air outlet b and main air accumulator (4) air inlet port a of air compressor (6) pass through air circuit connection, air compressor
(6) the air inlet port a of air outlet a and secondary air accumulator (3) pass through air circuit connection.
The air inlet port a of brake valve (2) is connected with the air outlet d of main air accumulator (4) by gas circuit, brake valve (2)
Air inlet port b is connected with the air outlet c of main air accumulator (4) by gas circuit, the air outlet c and nonpowered axle of brake valve (2)
The control port c of relay valve (32) is connected by gas circuit, the air outlet d of brake valve (2) and the control of drive shaft relay valve (9)
Port c is connected by gas circuit.
The air outlet b of secondary air accumulator (3) is connected by gas circuit with the air inlet port a of switch electromagnetic valve (5), and electromagnetism is switched
The air outlet b of valve (5) is connected with the air inlet port a of the linear exhaust solenoid valve of drive shaft (7) by gas circuit, drive shaft linear rows
The air outlet b of pneumoelectric magnet valve (7) is connected with the air inlet port a of the first triple valve (8) by gas circuit, the first triple valve (8)
Air outlet b is connected by gas circuit with the air inlet port b of right driving wheel double-way check valve (11), the outlet of the first triple valve (8)
Port c is connected by gas circuit with the air inlet port b of left driving wheel double-way check valve (28).
The port a of drive shaft relay valve (9) is connected with the air outlet e of main air accumulator (4) by gas circuit, drive shaft servo
The port b of valve (9) is connected with the port b of the second triple valve (10) by gas circuit.
The port a of second triple valve (10) is connected by gas circuit with the air inlet port a of right driving wheel double-way check valve (11),
The air outlet c of right driving wheel double-way check valve (11) passes through the air inlet port a phase of gas circuit and right driving wheel ABS solenoid valve (19)
Even, the air inlet port b of right driving wheel ABS solenoid valve (19) is connected with right driving wheel brake chamber (18) by gas circuit.
Right driving wheel brake-pressure sensor (17) are installed on right driving wheel brake chamber (18).
The port c of second triple valve (10) is connected by gas circuit with the air inlet port a of left driving wheel double-way check valve (28),
The air outlet c of left driving wheel double-way check valve (28) passes through the air inlet port a phase of gas circuit and left driving wheel ABS solenoid valve (20)
Even, the air inlet port b of left driving wheel ABS solenoid valve (20) is connected with left driving wheel brake chamber (21) by gas circuit.
Left driving wheel brake-pressure sensor (22) are installed on left driving wheel brake chamber (21).
The port a of nonpowered axle relay valve (32) is connected with the air outlet b of main air accumulator (4) by gas circuit, non-driven
The port b of axis relay valve (32) is connected by gas circuit with the port b of third triple valve (33), the port c of third triple valve (33)
Be connected by gas circuit with the air inlet port a of left non-driving wheel ABS solenoid valve (38), left non-driving wheel ABS solenoid valve (38) into
Gas port b is connected with left non-driving wheel brake chamber (37) by gas circuit, and the port a of third triple valve (33) passes through gas circuit and the right side
The air inlet port a of non-driving wheel ABS solenoid valve (39) is connected, and the air inlet port b of right non-driving wheel ABS solenoid valve (39) and the right side are non-
Driving wheel brake chamber (40) is connected by gas circuit.
Right non-driving wheel brake-pressure sensor (41) is installed on right non-driving wheel brake chamber (40).
Right driving wheel wheel speed sensors (14), left driving wheel wheel speed sensors (25), left non-driving wheel wheel speed sensors
(36), right non-driving wheel wheel speed sensors (42) are connected by signal wire with brake monitor (31).
Right driving wheel ABS solenoid valve (19), left driving wheel ABS solenoid valve (20), left non-driving wheel ABS solenoid valve (38),
Right non-driving wheel ABS solenoid valve (39) is connected by signal wire with brake monitor (31).
Switch electromagnetic valve (5), the linear exhaust solenoid valve of drive shaft (7), right driving wheel brake-pressure sensor (17), left drive
Driver brake pressure sensor (22), right non-driving wheel brake-pressure sensor (41) and brake pedal displacement sensor (45)
It is connected by signal wire with entire car controller (30).
Right driving wheel drive motor controller (16), left driving wheel drive motor controller (23), battery management system
(29), entire car controller (30) is connected with brake monitor (31) by CAN bus.
Based on the above-mentioned two-wheeled acoustic filed electric vehicle brake power based on double-way check valve and linear exhaust solenoid valve
Recovery system, entire car controller (30) are based on speed, the brake pedal displacement biography that brake monitor (31) are exported by CAN bus
The battery permission maximum charge that pedal displacement signal, the battery management system (29) of sensor (45) output are exported by CAN bus
Electric current, the right driving wheel driving motor and transmission device that right driving wheel drive motor controller (16) is exported by CAN bus
(15) the right driving wheel maximum motor brake force that can be provided, left driving wheel drive motor controller (23) are defeated by CAN bus
The left driving wheel maximum motor brake force that left driving wheel driving motor and transmission device (24) out can be provided, judges whether to touch
Send out braking energy recovering function, and control switch solenoid valve (5) and the linear exhaust solenoid valve of drive shaft (7) accordingly.
When brake pedal and triggering braking energy recovering function, entire car controller (30) control switch solenoid valve
(5) it is connected, the gas circuit between secondary air accumulator (3) port b and the linear exhaust solenoid valve of drive shaft (7) port a is connected, vehicle control
Device (30) the control linear exhaust solenoid valve of drive shaft (7) processed is in close state, and exhaust port c is not communicated with atmosphere;When stepping on
Lower brake pedal, but when not triggering braking energy recovering function, entire car controller (30) control switch solenoid valve (5), which is in, to close
Disconnected state, the gas circuit between secondary air accumulator (3) port b and the linear exhaust solenoid valve of drive shaft (7) port a are not turned on, vehicle control
Device (30) the control linear exhaust solenoid valve of drive shaft (7) processed is in close state, and exhaust port c is not communicated with atmosphere.When driving
The person of sailing loosen the brake (1) when, entire car controller (30) control switch solenoid valve (5) disconnect pair air accumulator (3) port b with drive
Air circuit connection between the linear exhaust solenoid valve of moving axis (7) port a, entire car controller (30) control drive shaft are linearly vented electricity
Magnet valve (7) is in the open state, and exhaust port c is communicated with atmosphere, and controls its aperture and brake pedal displacement sensor
(45) the proportional relationship of pedal displacement signal exported by signal wire.
Compared with prior art, the present invention by increasing secondary air accumulator (3), switch in existing brake energy recovering system
Solenoid valve (5), the linear exhaust solenoid valve of drive shaft (7), the first triple valve (8), drive shaft relay valve (9), the second triple valve
(10), right driving wheel double-way check valve (11), right driving wheel brake-pressure sensor (17), left driving wheel brake-pressure sensor
(22), left driving wheel double-way check valve (28), right non-driving wheel brake-pressure sensor (41) and brake pedal displacement sensor
(45) etc. components, making left and right driving wheel brake circuit tool, there are two independent high-pressure air source and double back line structures, trigger Brake Energy
When amount recycling, high pressure gas can be provided for driving wheel brake chamber by the higher gas source of air pressure, to efficiently solve existing side
When continuously being braked present in case, because the relatively low bring driving wheel coupling braking force response rate of bleed pressure is slow, and lag behind
The critical issue of demand brake force.
Fig. 1 is the two-wheeled acoustic filed electric vehicle brake power the present invention is based on double-way check valve and linear exhaust solenoid valve
The structural schematic diagram of recovery system.Wherein: 1, brake pedal;2, brake valve;3, secondary air accumulator;4, main air accumulator;5, switch electricity
Magnet valve;6, air compressor;7, the linear exhaust solenoid valve of drive shaft;8, the first triple valve;9, drive shaft relay valve;10, second
Triple valve;11, right driving wheel double-way check valve;12, right driving wheel brake;13, right driving wheel;14, right driving wheel wheel speed passes
Sensor;15, right driving wheel driving motor and transmission device;16, right driving wheel drive motor controller;17, right driving wheel is braked
Pressure sensor;18, right driving wheel brake chamber;19, right driving wheel ABS solenoid valve;20, left driving wheel ABS solenoid valve;21,
Left driving wheel brake chamber;22, left driving wheel brake-pressure sensor;23, left driving wheel drive motor controller;24, left drive
Driving wheel driving motor and transmission device;25, left driving wheel wheel speed sensors;26, left driving wheel brake;27, left driving wheel;
28, left driving wheel double-way check valve;29, battery management system;30, entire car controller;31, brake monitor;32, nonpowered axle
Relay valve;33, third triple valve;34, left non-driving wheel;35, left non-driving wheel brake;36, left non-driving wheel wheel speed sensing
Device;37, left non-driving wheel brake chamber;38, left non-driving wheel ABS solenoid valve;39, right non-driving wheel ABS solenoid valve;40, right
Non-driving wheel brake chamber;41, right non-driving wheel brake-pressure sensor;42, right non-driving wheel wheel speed sensors;43, right non-
Driving wheel brake;44, right non-driving wheel;45, brake pedal displacement sensor.
A specific embodiment of the invention is described below.
The present invention provides a kind of two-wheeled acoustic filed brake of electric vehicle based on double-way check valve and linear exhaust solenoid valve
Energy recycling system referring to attached drawing and gives an actual example to the present invention to keep technical solution of the present invention and effect clearer, clear
It is further described;It should be appreciated that specific implementation described herein is not used to limit this hair only to explain the present invention
It is bright.
As shown in Figure 1, the two-wheeled acoustic filed electric vehicle brake power based on double-way check valve and linear exhaust solenoid valve
Recovery system is by brake pedal (1), brake valve (2), secondary air accumulator (3), main air accumulator (4), switch electromagnetic valve (5), air pressure
Contracting machine (6), the linear exhaust solenoid valve of drive shaft (7), the first triple valve (8), drive shaft relay valve (9), the second triple valve (10),
Right driving wheel double-way check valve (11), right driving wheel wheel speed sensors (14), right driving wheel driving motor and transmission device (15),
Right driving wheel drive motor controller (16), right driving wheel brake-pressure sensor (17), right driving wheel brake chamber (18), the right side
Driving wheel ABS solenoid valve (19), left driving wheel ABS solenoid valve (20), left driving wheel brake chamber (21), left driving wheel braking pressure
Force snesor (22), left driving wheel drive motor controller (23), left driving wheel driving motor and transmission device (24), left driving
Take turns wheel speed sensors (25), left driving wheel double-way check valve (28), battery management system (29), entire car controller (30), braking
Controller (31), nonpowered axle relay valve (32), third triple valve (33), left non-driving wheel wheel speed sensors (36), left non-drive
Driver brake gas chamber (37), left non-driving wheel ABS solenoid valve (38), right non-driving wheel ABS solenoid valve (39), right non-driving wheel
Brake chamber (40), right non-driving wheel brake-pressure sensor (41), right non-driving wheel wheel speed sensors (42), brake pedal position
Displacement sensor (45) composition.
The air outlet b and main air accumulator (4) air inlet port a of air compressor (6) pass through air circuit connection, air compressor
(6) the air inlet port a of air outlet a and secondary air accumulator (3) pass through air circuit connection.
The air inlet port a of brake valve (2) is connected with the air outlet d of main air accumulator (4) by gas circuit, brake valve (2)
Air inlet port b is connected with the air outlet c of main air accumulator (4) by gas circuit, the air outlet c and nonpowered axle of brake valve (2)
The control port c of relay valve (32) is connected by gas circuit, the air outlet d of brake valve (2) and the control of drive shaft relay valve (9)
Port c is connected by gas circuit.
The air outlet b of secondary air accumulator (3) is connected by gas circuit with the air inlet port a of switch electromagnetic valve (5), and electromagnetism is switched
The air outlet b of valve (5) is connected with the air inlet port a of the linear exhaust solenoid valve of drive shaft (7) by gas circuit, drive shaft linear rows
The air outlet b of pneumoelectric magnet valve (7) is connected with the air inlet port a of the first triple valve (8) by gas circuit, the first triple valve (8)
Air outlet b is connected by gas circuit with the air inlet port b of right driving wheel double-way check valve (11), the outlet of the first triple valve (8)
Port c is connected by gas circuit with the air inlet port b of left driving wheel double-way check valve (28).
The port a of drive shaft relay valve (9) is connected with the air outlet e of main air accumulator (4) by gas circuit, drive shaft servo
The port b of valve (9) is connected with the port b of the second triple valve (10) by gas circuit.
The port a of second triple valve (10) is connected by gas circuit with the air inlet port a of right driving wheel double-way check valve (11),
The air outlet c of right driving wheel double-way check valve (11) passes through the air inlet port a phase of gas circuit and right driving wheel ABS solenoid valve (19)
Even, the air inlet port b of right driving wheel ABS solenoid valve (19) is connected with right driving wheel brake chamber (18) by gas circuit.
Right driving wheel brake-pressure sensor (17) are installed on right driving wheel brake chamber (18).
The port c of second triple valve (10) is connected by gas circuit with the air inlet port a of left driving wheel double-way check valve (28),
The air outlet c of left driving wheel double-way check valve (28) passes through the air inlet port a phase of gas circuit and left driving wheel ABS solenoid valve (20)
Even, the air inlet port b of left driving wheel ABS solenoid valve (20) is connected with left driving wheel brake chamber (21) by gas circuit;
Left driving wheel brake-pressure sensor (22) are installed on left driving wheel brake chamber (21).
The port a of nonpowered axle relay valve (32) is connected with the air outlet b of main air accumulator (4) by gas circuit, non-driven
The port b of axis relay valve (32) is connected by gas circuit with the port b of third triple valve (33), the port c of third triple valve (33)
Be connected by gas circuit with the air inlet port a of left non-driving wheel ABS solenoid valve (38), left non-driving wheel ABS solenoid valve (38) into
Gas port b is connected with left non-driving wheel brake chamber (37) by gas circuit, and the port a of third triple valve (33) passes through gas circuit and the right side
The air inlet port a of non-driving wheel ABS solenoid valve (39) is connected, and the air inlet port b of right non-driving wheel ABS solenoid valve (39) and the right side are non-
Driving wheel brake chamber (40) is connected by gas circuit.
Right non-driving wheel brake-pressure sensor (41) is installed on right non-driving wheel brake chamber (40).
Right driving wheel wheel speed sensors (14), left driving wheel wheel speed sensors (25), left non-driving wheel wheel speed sensors
(36), right non-driving wheel wheel speed sensors (42) are connected by signal wire with brake monitor (31).
Right driving wheel ABS solenoid valve (19), left driving wheel ABS solenoid valve (20), left non-driving wheel ABS solenoid valve (38),
Right non-driving wheel ABS solenoid valve (39) is connected by signal wire with brake monitor (31).
Switch electromagnetic valve (5), the linear exhaust solenoid valve of drive shaft (7), right driving wheel brake-pressure sensor (17), left drive
Driver brake pressure sensor (22), right non-driving wheel brake-pressure sensor (41) and brake pedal displacement sensor (45)
It is connected by signal wire with entire car controller (30).
Right driving wheel drive motor controller (16), left driving wheel drive motor controller (23), battery management system
(29), entire car controller (30) is connected with brake monitor (31) by CAN bus.
When braking, the working principle of above-mentioned braking system is as follows.
In car running process, brake monitor (31) receives right driving wheel wheel speed sensors (14), left driving wheel wheel speed
The wheel speed signal that sensor (25), left non-driving wheel wheel speed sensors (36), right non-driving wheel wheel speed sensors (42) export.
Entire car controller (30) receives the speed signal exported by brake monitor (31) and vehicle acceleration signal, by making
The pedal displacement signal of dynamic pedal displacement sensor (45) output, by the non-of right non-driving wheel brake-pressure sensor (41) output
Drive shaft braking pressure pressure value, the right driving wheel braking pressure pressure value of right driving wheel brake-pressure sensor (17) output,
The left driving wheel braking pressure pressure value of left driving wheel brake-pressure sensor (22) output, battery management system (29) pass through
The battery of CAN bus output allows maximum charging current, and right driving wheel drive motor controller (16) is exported by CAN bus
Right driving wheel driving motor and the right driving wheel maximum motor brake force that can be provided of transmission device (15), left driving wheel driving
The left driving that the left driving wheel driving motor and transmission device (24) that electric machine controller (23) is exported by CAN bus can be provided
Take turns maximum motor brake force.
Right driving wheel driving motor and transmission device (15) can be applied to right driving wheel (13) maximum motor brake force and
Left driving wheel driving motor and transmission device (24) can be applied to the maximum motor brake force of left driving wheel (27) by full-vehicle control
The battery that device (30) is exported according to vehicle speed, vehicle acceleration, battery management system (29) by CAN bus allows maximum to fill
Electric current, the right driving wheel driving motor and transmission device that right driving wheel drive motor controller (16) is exported by CAN bus
(15) the right driving wheel maximum motor brake force that can be provided, left driving wheel drive motor controller (23) are defeated by CAN bus
The maximum motor brake force that left driving wheel driving motor and transmission device (24) out can be provided determines.
Entire car controller (30) is based on speed, the brake pedal displacement biography that brake monitor (31) are exported by CAN bus
The battery permission maximum charge that pedal displacement signal, the battery management system (29) of sensor (45) output are exported by CAN bus
Electric current, the right driving wheel driving motor and transmission device that right driving wheel drive motor controller (16) is exported by CAN bus
(15) the right driving wheel maximum motor brake force that can be provided, left driving wheel drive motor controller (23) are defeated by CAN bus
The left driving wheel maximum motor brake force that left driving wheel driving motor and transmission device (24) out can be provided, and according to as follows
Four conditions judge whether to trigger braking energy recovering function: condition one: the pedal of brake pedal displacement sensor (45) output
Displacement signal is greater than the pedal displacement threshold value of triggering Brake energy recovery;Condition two: the vehicle speed value of brake monitor (31) output
Greater than the minimum speed threshold value for allowing Brake energy recovery;Condition three: the battery of battery management system (29) output allows maximum
Charging current is greater than 0;Condition four: the left driving wheel demand motor braking power or right driving wheel determined by entire car controller (30) needs
Motor braking power is asked to be greater than the minimum motor braking force threshold for allowing Brake energy recovery.
When meeting aforementioned four condition simultaneously, braking energy recovering function is triggered;When there is any one not to be able to satisfy,
Braking energy recovering function cannot then be triggered.
When brake pedal (1), and when triggering braking energy recovering function.
Entire car controller (30) is displaced according to speed, vehicle acceleration and brake pedal, determines left non-driving wheel (34), the right side
Total brake force target value needed for non-driving wheel (44), left driving wheel (27) and right driving wheel (13).
Entire car controller (30) total brake force target value, battery according to needed for left driving wheel (27) and right driving wheel (13)
Management system (29) allows maximum charging current, right driving wheel drive motor controller (16) by the battery that CAN bus exports
The right driving wheel maximum motor braking that the right driving wheel driving motor and transmission device (15) exported by CAN bus can be provided
Power, the left driving wheel driving motor and transmission device (24) that left driving wheel drive motor controller (23) is exported by CAN bus
The left driving wheel maximum motor brake force that can be provided, motor system needed for determining left driving wheel (27) and right driving wheel (13)
Power target value.
Entire car controller (30) is according to the total brake force target value of left driving wheel (27) and the total brake force mesh of right driving wheel (13)
Motor braking power target value needed for scale value, left driving wheel (27) and right driving wheel (13) determines left driving wheel (27) and right driving
Take turns the air-pressure brake power target value of (13).
Entire car controller (30) is exported required right driving wheel (13) motor braking power target value to the right side by CAN bus
Drive wheel electric machine controller (16), entire car controller (30) pass through CAN bus for required left driving wheel (27) motor system
Power target value, which exports, gives left driving wheel drive motor controller (23), and entire car controller (30) exports left drive by CAN bus
The air-pressure brake power target value of driving wheel (27), the air-pressure brake power target value of right driving wheel (13), right driving wheel brake pressure pass
The left drive that the right driving wheel air-pressure brake power actual value of sensor (17) output, left driving wheel brake-pressure sensor (22) export
Driving wheel air-pressure brake power actual value gives brake monitor (31).
When triggering braking energy recovering function, the principle for applying braking to left driving wheel (27) is as follows.
Entire car controller (30) control switch solenoid valve (5) is connected, and the high pressure gas in secondary air accumulator (3) successively passes through pair
The port a of the port b of air accumulator (3), the port a of switch electromagnetic valve (5) and the linear exhaust solenoid valve of port b, drive shaft (7)
The port b that left driving wheel double-way check valve (28) are reached with port b, the port a of the first triple valve (8) and port c, in this process
In not to the linear exhaust solenoid valve of drive shaft (7) apply control.
High pressure gas in main air accumulator (4) is by the port d of main air accumulator (4), the port a and port d of brake valve (2)
Into the control port c of drive shaft relay valve (9), the port a and port b of drive shaft relay valve (9) is connected, main air accumulator
(4) high pressure gas in successively passes through the port a and port b, second of the port e of main air accumulator (4), drive shaft relay valve (9)
The port b and port c of triple valve (10) reach the port a of left driving wheel double-way check valve (28).
At this point, according to left driving wheel double-way check valve (28) port a air pressure and left driving wheel double-way check valve (28) port b
The size of air pressure is divided into the following two kinds to the case where left driving wheel brake chamber (21) offer brake pressure.
When left driving wheel double-way check valve (28) port a air pressure is greater than port b air pressure, left drive is given by main air accumulator (4)
Driver brake gas chamber (21) provides high pressure gas;At this point, the high pressure gas in main air accumulator (4) successively passes through main air accumulator (4)
Port e, the port a and port b of drive shaft relay valve (9), the port b of the second triple valve (10) and port c, left driving wheel it is double
The port a and port c of logical check valve (28), the port a and port b of left driving wheel ABS solenoid valve (20) enter left driving wheel system
It takes offence room (21), so as to apply air-pressure brake power to left driving wheel (27) by left driving wheel brake (26).
When left driving wheel double-way check valve (28) port a air pressure is less than port b air pressure, left drive is given by secondary air accumulator (3)
Driver brake gas chamber (21) provides high pressure gas;At this point, the high pressure gas in secondary air accumulator (3) successively passes through secondary air accumulator (3)
Port b, switch electromagnetic valve (5) port a and the linear exhaust solenoid valve of port b, drive shaft (7) port a and port b,
The port a and port c of one triple valve (8), the port b and port c of left driving wheel double-way check valve (28), left driving wheel ABS electricity
The port a and port b of magnet valve (20) enter left driving wheel brake chamber (21), so as to be given by left driving wheel brake (26)
Left driving wheel (27) applies air-pressure brake power, and the linear exhaust solenoid valve of drive shaft (7) exhaust port c, which is in, in the process closes
State is not communicated with atmosphere.
For the decoupling control for realizing left driving wheel (27) motor braking power and air-pressure brake power, left driving wheel ABS can be passed through
Solenoid valve (20) adjusts the size of left driving wheel (27) air-pressure brake power, according to left driving wheel driving motor and transmission device
(24) it can be applied between the maximum motor brake force of left driving wheel (27) and total brake force target value of left driving wheel (27)
Relationship, the mode for applying brake force to left driving wheel (27) are divided into the following two kinds.
Mode one: when left driving wheel driving motor and transmission device (24) can be applied to the maximum motor of left driving wheel (27)
When brake force is greater than or equal to left driving wheel (27) total brake force target value, the air-pressure brake power target value of left driving wheel (27) is
0, at this point, brake monitor (31) is closed by signal line traffic control left driving wheel ABS solenoid valve (20) port a, port b and port
C is opened, and disconnects the air circuit connection between left driving wheel brake chamber (21) and left driving wheel double-way check valve (28) port c, left
Driving wheel brake chamber (21) is communicated by the port b and port c of left driving wheel ABS solenoid valve (20) with atmosphere, at this time by a left side
Brake force needed for drive wheel motor and transmission device (24) apply to left driving wheel (27).
Mode two: when left driving wheel driving motor and transmission device (24) can be applied to the maximum motor of left driving wheel (27)
When brake force is less than left driving wheel (27) total brake force target value, left driving wheel driving motor and transmission device (24) give left driving
It takes turns (27) and applies maximum motor brake force.
Left driving wheel (27) air-pressure brake power target value is driven by the total brake force target value of left driving wheel (27) and left driving wheel
The difference that dynamic motor and transmission device (24) can be applied to the maximum motor brake force of left driving wheel (27) determines, according to left driving wheel
(27) relationship between air-pressure brake power target value and air-pressure brake power actual value applies air-pressure brake power to left driving wheel (27)
The case where be divided into following three kinds.
When left driving wheel (27) air-pressure brake power target value is greater than air-pressure brake power actual value, brake monitor (31)
It is connected by signal line traffic control left driving wheel ABS solenoid valve (20) port a and port b, port c is closed, left driving wheel bilateral list
Enter left driving wheel by the port a and port b of left driving wheel ABS solenoid valve (20) to the high pressure gas at valve (28) port c
Brake chamber (21), to realize the increase of left driving wheel (27) actual pressure brake force.
When left driving wheel (27) air-pressure brake power target value is less than air-pressure brake power actual value, brake monitor (31)
It is closed by signal line traffic control left driving wheel ABS solenoid valve (20) port a, port b and port c conducting, left driving wheel brake gas
High pressure gas at room (21) is discharged into atmosphere by left driving wheel ABS solenoid valve (20) port b and port c, to realize left driving
Take turns the reduction of (27) actual pressure brake force.
When left driving wheel (27) air-pressure brake power target value is equal to air-pressure brake power actual value, brake monitor (31)
It is closed by signal line traffic control left driving wheel ABS solenoid valve (20) port b and port c, in left driving wheel brake chamber (21)
Air pressure remains unchanged, to realize the holding of left driving wheel (27) actual pressure brake force.
When brake pedal (1), but when not triggering braking energy recovering function.
Switch electromagnetic valve (5) is closed, the port a of secondary air accumulator (3) port b and the linear exhaust solenoid valve of drive shaft (7) it
Between gas circuit disconnect, the port b of left driving wheel double-way check valve (28) is without high pressure gas.
High pressure gas in main air accumulator (4) is by the port d of main air accumulator (4), the port a and port d of brake valve (2)
Into the control port c of drive shaft relay valve (9), the port a and port b of drive shaft relay valve (9) is connected, main air accumulator
(4) high pressure gas in successively passes through the port a and port b, second of the port e of main air accumulator (4), drive shaft relay valve (9)
The port b and port c of triple valve (10) reach the port a of left driving wheel double-way check valve (28).
The port b of left driving wheel double-way check valve (28) is closed, port a and port c conducting, the height in main air accumulator (4)
Body of calming the anger successively passes through the port e of main air accumulator (4), the port a of drive shaft relay valve (9) and port b, the second triple valve (10)
Port b and port c, the port a of left driving wheel double-way check valve (28) and port c, left driving wheel ABS solenoid valve (20)
Port a and port b enters left driving wheel brake chamber (21), so as to give left driving wheel by left driving wheel brake (26)
(27) apply air-pressure brake power.
Releasing to the gentle compacting power of releasing that the releasing of left driving wheel (27) braking is divided into motor braking power, work are former
It manages as follows:
When driver loosens the brake (1), entire car controller (30) is controlled by left driving wheel drive motor controller (23)
System is reduced by the motor braking power that left driving wheel driving motor and transmission device (24) are applied to left driving wheel (27), to release a left side
The motor braking power of driving wheel.
When driver loosens the brake (1), brake valve (2) is closed, and drive shaft relay valve (9) disconnects main air accumulator
(4) connection between port e and the second triple valve (10) port b, switch electromagnetic valve (5) disconnect pair air accumulator (3) port b and
Air circuit connection between the linear exhaust solenoid valve of drive shaft (7) port a, entire car controller (30) pass through signal line traffic control drive shaft
Linear exhaust solenoid valve (7) is opened, and exhaust port c is connected with atmosphere, and controls opening for drive shaft linear exhaust solenoid valve (7)
Relationship proportional to the pedal displacement that brake pedal displacement sensor (45) export is spent, releases left driving wheel (27) air pressure system at this time
The mode of power is divided into two kinds.
Height when left driving wheel double-way check valve (28) port a is connected with port c, in left driving wheel brake chamber (21)
Body of calming the anger successively passes through air inlet port b and air inlet port a, the left driving wheel double-way check valve of left driving wheel ABS solenoid valve (20)
(28) the port b of port c and port a, the port c of the second triple valve (10) and port b, drive shaft relay valve (9) enter driving
Axis relay valve (9) is discharged into atmosphere by drive shaft relay valve (9), so as to release the air-pressure brake of left driving wheel (27),
Left driving wheel ABS solenoid valve (20) is not applied during this and is controlled.
Height when left driving wheel double-way check valve (28) port b is connected with port c, in left driving wheel brake chamber (21)
Body of calming the anger successively passes through air inlet port b and air inlet port a, the left driving wheel double-way check valve of left driving wheel ABS solenoid valve (20)
(28) the port b of port c and port b, the port c of the first triple valve (8) and the linear exhaust solenoid valve of port a, drive shaft (7)
Into the linear exhaust solenoid valve of drive shaft (7), the exhaust port c through the linear exhaust solenoid valve of drive shaft (7) is discharged into atmosphere, from
And the air-pressure brake of left driving wheel (27) can be released, left driving wheel ABS solenoid valve (20) is not applied control in the process.
When triggering braking energy recovering function, the principle for applying braking to right driving wheel (13) is as follows.
Entire car controller (30) control switch solenoid valve (5) is connected, and the high pressure gas in secondary air accumulator (3) successively passes through pair
The port a of the port b of air accumulator (3), the port a of switch electromagnetic valve (5) and the linear exhaust solenoid valve of port b, drive shaft (7)
The port b that right driving wheel double-way check valve (11) are reached with port b, the port a of the first triple valve (8) and port b, in this process
In not to the linear exhaust solenoid valve of drive shaft (7) apply control.
High pressure gas in main air accumulator (4) is by the port d of main air accumulator (4), the port a and port d of brake valve (2)
Into the control port c of drive shaft relay valve (9), the port a and port b of drive shaft relay valve (9) is connected, main air accumulator
(4) high pressure gas in successively passes through the port a and port b, second of the port e of main air accumulator (4), drive shaft relay valve (9)
The port b and port a of triple valve (10) reach the port a of right driving wheel double-way check valve (11).
At this point, according to right driving wheel double-way check valve (11) port a air pressure and right driving wheel double-way check valve (11) port
The size of b air pressure is divided into the following two kinds to the case where right driving wheel brake chamber (18) offer brake pressure.
When right driving wheel double-way check valve (11) port a air pressure is greater than port b air pressure, right drive is given by main air accumulator (4)
Driver brake gas chamber (18) provides high pressure gas;At this point, the high pressure gas in main air accumulator (4) successively passes through main air accumulator (4)
Port e, the port a and port b of drive shaft relay valve (9), the port b of the second triple valve (10) and port a, right driving wheel it is double
The port a and port c of logical check valve (11), the port a and port b of right driving wheel ABS solenoid valve (19) enter right driving wheel system
It takes offence room (18), so as to apply air-pressure brake power to right driving wheel (13) by right driving wheel brake (12).
When right driving wheel double-way check valve (11) port a air pressure is less than port b air pressure, right drive is given by secondary air accumulator (3)
Driver brake gas chamber (18) provides high pressure gas;At this point, the high pressure gas in secondary air accumulator (3) successively passes through secondary air accumulator (3)
Port b, switch electromagnetic valve (5) port a and the linear exhaust solenoid valve of port b, drive shaft (7) port a and port b,
The port a and port b of one triple valve (8), the port b and port c of right driving wheel double-way check valve (11), right driving wheel ABS electricity
The port a and port b of magnet valve (19) enter right driving wheel brake chamber (18), so as to be given by right driving wheel brake (12)
Right driving wheel (13) applies air-pressure brake power, and the linear exhaust solenoid valve of drive shaft (7) exhaust port c, which is in, in the process closes
State is not communicated with atmosphere.
For the decoupling control for realizing right driving wheel (13) motor braking power and air-pressure brake power, right driving wheel ABS can be passed through
Solenoid valve (19) adjusts the size of right driving wheel (13) air-pressure brake power, according to right driving wheel driving motor and transmission device
(15) it can be applied between the maximum motor brake force of right driving wheel (13) and total brake force target value of right driving wheel (13)
Relationship, the mode for applying brake force to right driving wheel (13) are divided into the following two kinds.
Mode one: when right driving wheel driving motor and transmission device (15) can be applied to the maximum motor of right driving wheel (13)
When brake force is greater than or equal to right driving wheel (13) total brake force target value, the air-pressure brake power target value of right driving wheel (13) is
0, at this point, brake monitor (31) is closed by signal line traffic control right driving wheel ABS solenoid valve (19) port a, port b and port
C is opened, and disconnects the air circuit connection between right driving wheel brake chamber (18) and right driving wheel double-way check valve (11) port c, right
Driving wheel brake chamber (18) is communicated by the port b and port c of right driving wheel ABS solenoid valve (19) with atmosphere, at this time by the right side
Brake force needed for drive wheel motor and transmission device (15) apply to right driving wheel (13).
Mode two: when right driving wheel driving motor and transmission device (15) can be applied to the maximum motor of right driving wheel (13)
When brake force is less than right driving wheel (13) total brake force target value, right driving wheel driving motor and transmission device (15) give right driving
It takes turns (13) and applies maximum motor brake force.
Right driving wheel (13) air-pressure brake power target value is driven by the total brake force target value of right driving wheel (13) and right driving wheel
The difference that dynamic motor and transmission device (15) can be applied to the maximum motor brake force of right driving wheel (13) determines, according to right driving wheel
(13) relationship between air-pressure brake power target value and air-pressure brake power actual value applies air-pressure brake power to right driving wheel (13)
The case where be divided into following three kinds.
When right driving wheel (13) air-pressure brake power target value is greater than air-pressure brake power actual value, brake monitor (31)
It is connected by signal line traffic control right driving wheel ABS solenoid valve (19) port a and port b, port c is closed, right driving wheel bilateral list
Enter right driving wheel system by right driving wheel ABS solenoid valve (19) port a and port b to the high pressure gas at valve (11) port c
It takes offence room (18), to realize the increase of right driving wheel (13) actual pressure brake force.
When right driving wheel (13) air-pressure brake power target value is less than air-pressure brake power actual value, brake monitor (31)
It is closed by signal line traffic control right driving wheel ABS solenoid valve (19) port a, port b and port c conducting, right driving wheel brake gas
High pressure gas at room (18) is discharged into atmosphere by right driving wheel ABS solenoid valve (19) port b and port c, to realize right driving
Take turns the reduction of (13) actual pressure brake force.
When right driving wheel (13) air-pressure brake power target value is equal to air-pressure brake power actual value, brake monitor (31)
It is closed by signal line traffic control right driving wheel ABS solenoid valve (19) port b and port c, in right driving wheel brake chamber (18)
Air pressure remains unchanged, to realize the holding of right driving wheel (13) actual pressure brake force.
When brake pedal (1), but when not triggering braking energy recovering function.
Switch electromagnetic valve (5) is closed, and the gas circuit between secondary air accumulator (3) port b and the port a of the first triple valve (8) is disconnected
It opens, the port b of right driving wheel double-way check valve (11) is without high pressure gas.
High pressure gas in main air accumulator (4) is by the port d of main air accumulator (4), the port a and port d of brake valve (2)
Into the control port c of drive shaft relay valve (9), the port a and port b of drive shaft relay valve (9) is connected, main air accumulator
(4) high pressure gas in successively passes through the port a and port b, second of the port e of main air accumulator (4), drive shaft relay valve (9)
The port b and port a of triple valve (10) reach the port a of right driving wheel double-way check valve (11).
The port b of right driving wheel double-way check valve (11) is closed, port a and port c conducting, the height in main air accumulator (4)
Body of calming the anger successively passes through the port e of main air accumulator (4), the port a of drive shaft relay valve (9) and port b, the second triple valve (10)
Port b and port a, the port a of right driving wheel double-way check valve (11) and port c, right driving wheel ABS solenoid valve (19)
Port a and port b enters right driving wheel brake chamber (18), so as to give right driving wheel by right driving wheel brake (12)
(13) apply air-pressure brake power.
Releasing to the gentle compacting power of releasing that the releasing of right driving wheel (13) braking is divided into motor braking power, work are former
It manages as follows.
When driver loosens the brake (1), entire car controller (30) passes through right driving wheel drive motor controller
(16) it controls and is reduced by the motor braking power that right driving wheel driving motor and transmission device (15) are applied to right driving wheel (13), with
Release the motor braking power of right driving wheel.
When driver loosens the brake (1), brake valve (2) is closed, and drive shaft relay valve (9) disconnects main air accumulator
(4) air circuit connection between port e and the second triple valve (10) port b, switch electromagnetic valve (5) disconnect secondary air accumulator (3) port
Air circuit connection between b and the linear exhaust solenoid valve of drive shaft (7) port a, entire car controller (30) are driven by signal line traffic control
The linear exhaust solenoid valve of moving axis (7) is opened, and exhaust port c is connected with atmosphere, and controls the linear exhaust solenoid valve of drive shaft (7)
Aperture relationship proportional to the pedal displacement that brake pedal displacement sensor (45) exports, at this time release right driving wheel (13) gas
The mode of compacting power is divided into two kinds.
Height when right driving wheel double-way check valve (11) port a is connected with port c, in right driving wheel brake chamber (18)
Body of calming the anger successively passes through air inlet port b and air inlet port a, the right driving wheel double-way check valve of right driving wheel ABS solenoid valve (19)
(11) the port b of port c and port a, the port a of the second triple valve (10) and port b, drive shaft relay valve (9) enter driving
Axis relay valve (9) is discharged into atmosphere by drive shaft relay valve (9), so as to release the air-pressure brake of right driving wheel (13),
Right driving wheel ABS solenoid valve (19) is not applied during this and is controlled.
Height when right driving wheel double-way check valve (11) port b is connected with port c, in right driving wheel brake chamber (18)
Body of calming the anger successively passes through air inlet port b and air inlet port a, the right driving wheel double-way check valve of right driving wheel ABS solenoid valve (19)
(11) the port b of port c and port b, the port b of the first triple valve (8) and the linear exhaust solenoid valve of port a, drive shaft (7)
Into the linear exhaust solenoid valve of drive shaft (7), the exhaust port c through the linear exhaust solenoid valve of drive shaft (7) is discharged into atmosphere, from
And the air-pressure brake of right driving wheel (13) can be released, right driving wheel ABS solenoid valve (19) is not applied control in the process.
Working principle when left non-driving wheel (34) are applied with air-pressure brake is as follows: when driver's brake pedal (1)
When, brake valve (2) is opened, and the high pressure gas in main air accumulator (4) is by the port c of main air accumulator (4), the end of brake valve (2)
Mouth b and port c enters the control port c of nonpowered axle relay valve (32), makes port a and the end of nonpowered axle relay valve (32)
Mouth b conducting;High pressure gas in main air accumulator (4) successively passes through the port b of main air accumulator (4), nonpowered axle relay valve (32)
Port a and port b, the port b of third triple valve (33) and port c, left non-driving wheel ABS solenoid valve (38) port a and
Port b enters left non-driving wheel brake chamber (37), is applied by left non-driving wheel brake (35) to left non-driving wheel (34)
Air-pressure brake power.
Target value and left non-driving wheel gas based on the left non-driving wheel air-pressure brake power determined by entire car controller (30)
The relationship between power actual value is suppressed, following three kinds of situations are divided into the control of left non-driving wheel (34) air-pressure brake power.
When left non-driving wheel (34) air-pressure brake power target value is greater than air-pressure brake power actual value, brake monitor (31)
It is connected by signal line traffic control left non-driving wheel ABS solenoid valve (38) port a and port b, port c is closed, third triple valve
(33) high pressure gas at the c of port enters left non-driving wheel system by left non-driving wheel ABS solenoid valve (38) port a and port b
It takes offence room (37), to realize the increase of left non-driving wheel (34) actual pressure brake force.
When left non-driving wheel (34) air-pressure brake power target value is less than air-pressure brake power actual value, brake monitor (31)
It is closed by left non-driving wheel ABS solenoid valve (38) the port a of signal line traffic control, port b and port c conducting, left non-driving wheel system
The high pressure gas taken offence at room (37) is discharged into atmosphere by left non-driving wheel ABS solenoid valve (38) port b and port c, to realize
The reduction of left non-driving wheel (34) actual pressure brake force.
When left non-driving wheel (34) air-pressure brake power target value is equal to air-pressure brake power actual value, brake monitor (31)
It is closed by signal line traffic control left non-driving wheel ABS solenoid valve (38) port b and port c, left non-driving wheel brake chamber (37)
In air pressure remain unchanged, to realize the holding of left non-driving wheel (34) actual pressure brake force.
The working principle for releasing air-pressure brake to left non-driving wheel (34) is as follows: when driver loosens the brake (1),
Brake valve (2) is closed, and nonpowered axle relay valve (32) disconnects between main air accumulator (4) port b and third triple valve (33) port b
Air circuit connection, the high pressure gas in left non-driving wheel brake chamber (37) passes sequentially through left non-driving wheel ABS solenoid valve (38)
Port b and port a, the port c of third triple valve (33) and port b enter nonpowered axle relay valve (32), through nonpowered axle
Relay valve (32) is discharged into atmosphere, so that the air-pressure brake power of left non-driving wheel (34) is released, in the process not to left non-driven
It takes turns ABS solenoid valve (38) and applies control.
Working principle when right non-driving wheel (44) are applied with air-pressure brake is as follows: when driver's brake pedal (1)
When, brake valve (2) is opened, and the high pressure gas in main air accumulator (4) is by the port c of main air accumulator (4), the end of brake valve (2)
Mouth b and port c enters the control port c of nonpowered axle relay valve (32), makes port a and the end of nonpowered axle relay valve (32)
Mouth b conducting;High pressure gas in main air accumulator (4) successively passes through the port b of main air accumulator (4), nonpowered axle relay valve (32)
Port a and port b, the port b of third triple valve (33) and port a, right non-driving wheel ABS solenoid valve (39) port a and
Port b enters right non-driving wheel brake chamber (40), is applied by right non-driving wheel brake (43) to right non-driving wheel (44)
Air-pressure brake power.
Target value and air-pressure brake power based on the right non-driving wheel air-pressure brake power determined by entire car controller (30) is real
Relationship between actual value is divided into following three kinds of situations to the control of right non-driving wheel (44) air-pressure brake power.
When right non-driving wheel (44) air-pressure brake power target value is greater than air-pressure brake power actual value, brake monitor (31)
It is connected by signal line traffic control right non-driving wheel ABS solenoid valve (39) port a and port b, port c is closed, third triple valve
(33) high pressure gas at a of port enters right non-driving wheel system by right non-driving wheel ABS solenoid valve (39) port a and port b
It takes offence room (40), to realize the increase of right non-driving wheel (44) actual pressure brake force.
When right non-driving wheel (44) air-pressure brake power target value is less than air-pressure brake power actual value, brake monitor (31)
It is closed by right non-driving wheel ABS solenoid valve (39) the port a of signal line traffic control, port b and port c conducting, right non-driving wheel system
The high pressure gas taken offence at room (40) is discharged into atmosphere by right non-driving wheel ABS solenoid valve (39) port b and port c, to realize
The reduction of right non-driving wheel (44) actual pressure brake force.
When right non-driving wheel (44) air-pressure brake power target value is equal to air-pressure brake power actual value, brake monitor (31)
It is closed by signal line traffic control right non-driving wheel ABS solenoid valve (39) port b and port c, right non-driving wheel brake chamber (40)
In air pressure remain unchanged, to realize the holding of right non-driving wheel (44) actual pressure brake force.
The working principle for releasing air-pressure brake to right non-driving wheel (44) is as follows: when driver loosens the brake (1),
Brake valve (2) is closed, and nonpowered axle relay valve (32) disconnects between main air accumulator (4) port b and third triple valve (33) port b
Air circuit connection, the high pressure gas in right non-driving wheel brake chamber (40) passes sequentially through right non-driving wheel ABS solenoid valve (39)
Port b and port a, the port a of third triple valve (33) and port b enter nonpowered axle relay valve (32), through nonpowered axle
Relay valve (32) is discharged into atmosphere, so that the air-pressure brake power of right non-driving wheel (44) is released, in the process not to right non-driven
It takes turns ABS solenoid valve (39) and applies control.
To the two-wheeled acoustic filed brake energy recovering system of electric vehicle based on double-way check valve and linear electromagnetic exhaust valve
Middle switch electromagnetic valve (5), the linear exhaust solenoid valve of drive shaft (7), right driving wheel double-way check valve (11), left driving wheel bilateral list
It is described below to the work characteristics of valve (28).
When the non-brake pedal of driver (1), switch electromagnetic valve (5) is in an off state, and drive shaft is linearly vented
Without high pressure gas at the port a of solenoid valve (7);Braking energy recovering function is not triggered when driver's brake pedal (1) but
When, switch electromagnetic valve (5) is in an off state, without high pressure gas at the port a of the linear exhaust solenoid valve of drive shaft (7);When driving
When the person's of sailing brake pedal (1) and triggering braking energy recovering function, switch electromagnetic valve (5) is in the conductive state, drive shaft
There is high pressure gas at the port a of linear exhaust solenoid valve (7).
There are three ports for the linear exhaust solenoid valve of drive shaft (7) tool: port a, port b and exhaust port c, port a and end
Mouth b is connected with braking gas circuit, is in normal open state, and exhaust port c is not connected with braking gas circuit, is stepping on electronic brake pedal
When, exhaust port c is in close state, and is not connected with atmosphere;When unclamping electronic brake pedal, exhaust port c, which is in, to be opened
State is connected with atmosphere, aperture relationship proportional to pedal displacement.
There are three ports for right driving wheel double-way check valve (11) tool: air inlet port a, air inlet port b and air outlet c, work
When making, the big port conducting of input air pressure, the small port shutdown of input air pressure, i.e., when the air pressure of air inlet port a is greater than inlet end
When the air pressure of mouth b, gas is flowed into from air inlet port a, is flowed out from air outlet c, air inlet port b shutdown;When the gas of air inlet port a
When pressure is less than the air pressure of air inlet port b, gas is flowed into from air inlet port b, is flowed out from air outlet c, air inlet port a shutdown.
There are three ports for left driving wheel double-way check valve (28) tool: air inlet port a, air inlet port b and air outlet c, work
When making, the big port conducting of input air pressure, the small port shutdown of input air pressure, i.e., when the air pressure of air inlet port a is greater than inlet end
When the air pressure of mouth b, gas is flowed into from air inlet port a, is flowed out from air outlet c, air inlet port b shutdown;When the gas of air inlet port a
When pressure is less than the air pressure of air inlet port b, gas is flowed into from air inlet port b, is flowed out from air outlet c, air inlet port a shutdown.
By above-mentioned discussion it is found that by increasing secondary air accumulator (3), switch electromagnetic valve in existing brake energy recovering system
(5), the linear exhaust solenoid valve of drive shaft (7), the first triple valve (8), drive shaft relay valve (9), the second triple valve (10), the right side
Driving wheel double-way check valve (11), right driving wheel brake-pressure sensor (17), left driving wheel brake-pressure sensor (22), a left side
The portions such as driving wheel double-way check valve (28), right non-driving wheel brake-pressure sensor (41) and brake pedal displacement sensor (45)
Part, making left and right driving wheel brake circuit tool, there are two independent high-pressure air source and double back line structures, step on when driver steps on braking
When plate (1) and no triggering braking energy recovering function, high pressure gas needed for right driving wheel (13) and left driving wheel (27) is by leading
Air accumulator (4) provides;When driver's brake pedal (1) and triggering braking energy recovering function when, right driving wheel (13) and
High pressure gas needed for left driving wheel (27) is provided by the big person of air pressure in main air accumulator (4) and secondary air accumulator (3), so as to have
When effect solves continuously to brake present in existing scheme, because of the relatively low bring driving wheel coupling braking force response rate of bleed pressure
Slowly, and the critical issue of demand brake force is lagged behind.
Claims (2)
1. a kind of two-wheeled acoustic filed brake energy recovering system of electric vehicle based on double-way check valve and linear exhaust solenoid valve,
It is characterized by:
By brake pedal (1), brake valve (2), secondary air accumulator (3), main air accumulator (4), switch electromagnetic valve (5), air compressor
(6), the linear exhaust solenoid valve of drive shaft (7), the first triple valve (8), drive shaft relay valve (9), the second triple valve (10), right drive
Driving wheel double-way check valve (11), right driving wheel wheel speed sensors (14), right driving wheel driving motor and transmission device (15), right drive
Driving wheel drive motor controller (16), right driving wheel brake-pressure sensor (17), right driving wheel brake chamber (18), right driving
Take turns ABS solenoid valve (19), left driving wheel ABS solenoid valve (20), left driving wheel brake chamber (21), left driving wheel brake pressure biography
Sensor (22), left driving wheel drive motor controller (23), left driving wheel driving motor and transmission device (24), left driving wheel wheel
Fast sensor (25), left driving wheel double-way check valve (28), battery management system (29), entire car controller (30), control for brake
Device (31), nonpowered axle relay valve (32), third triple valve (33), left non-driving wheel wheel speed sensors (36), left non-driving wheel
Brake chamber (37), left non-driving wheel ABS solenoid valve (38), right non-driving wheel ABS solenoid valve (39), right non-driving wheel brake gas
Room (40), right non-driving wheel brake-pressure sensor (41), right non-driving wheel wheel speed sensors (42), brake pedal displacement sensing
Device (45) composition;
The air outlet b and main air accumulator (4) air inlet port a of air compressor (6) pass through air circuit connection, air compressor (6)
Air outlet a and the air inlet port a of secondary air accumulator (3) pass through air circuit connection;
The air inlet port a of brake valve (2) is connected with the air outlet d of main air accumulator (4) by gas circuit, the air inlet of brake valve (2)
Port b is connected with the air outlet c of main air accumulator (4) by gas circuit, the air outlet c and nonpowered axle servo of brake valve (2)
The control port c of valve (32) is connected by gas circuit, the air outlet d of brake valve (2) and the control port of drive shaft relay valve (9)
C is connected by gas circuit;
The air outlet b of secondary air accumulator (3) is connected by gas circuit with the air inlet port a of switch electromagnetic valve (5), switch electromagnetic valve
(5) air outlet b is connected with the air inlet port a of the linear exhaust solenoid valve of drive shaft (7) by gas circuit, and drive shaft is linearly vented
The air outlet b of solenoid valve (7) is connected with the air inlet port a of the first triple valve (8) by gas circuit, and the first triple valve (8) goes out
Gas port b is connected by gas circuit with the air inlet port b of right driving wheel double-way check valve (11), the outlet side of the first triple valve (8)
Mouth c is connected by gas circuit with the air inlet port b of left driving wheel double-way check valve (28);
The port a of drive shaft relay valve (9) is connected with the air outlet e of main air accumulator (4) by gas circuit, drive shaft relay valve
(9) port b is connected with the port b of the second triple valve (10) by gas circuit;
The port a of second triple valve (10) is connected by gas circuit with the air inlet port a of right driving wheel double-way check valve (11), right drive
The air outlet c of driving wheel double-way check valve (11) is connected by gas circuit with the air inlet port a of right driving wheel ABS solenoid valve (19),
The air inlet port b of right driving wheel ABS solenoid valve (19) is connected with right driving wheel brake chamber (18) by gas circuit;Right driving wheel system
It takes offence and right driving wheel brake-pressure sensor (17) is installed on room (18);
The port c of second triple valve (10) is connected by gas circuit with the air inlet port a of left driving wheel double-way check valve (28), left drive
The air outlet c of driving wheel double-way check valve (28) is connected by gas circuit with the air inlet port a of left driving wheel ABS solenoid valve (20),
The air inlet port b of left driving wheel ABS solenoid valve (20) is connected with left driving wheel brake chamber (21) by gas circuit;Left driving wheel system
It takes offence and left driving wheel brake-pressure sensor (22) is installed on room (21);
The port a of nonpowered axle relay valve (32) is connected with the air outlet b of main air accumulator (4) by gas circuit, nonpowered axle after
The port b of dynamic valve (32) is connected by gas circuit with the port b of third triple valve (33), and the port c of third triple valve (33) passes through
Gas circuit is connected with the air inlet port a of left non-driving wheel ABS solenoid valve (38), the inlet end of left non-driving wheel ABS solenoid valve (38)
Mouth b is connected with left non-driving wheel brake chamber (37) by gas circuit, and the port a of third triple valve (33) passes through gas circuit and right non-drive
The air inlet port a of driving wheel ABS solenoid valve (39) is connected, and the air inlet port b of right non-driving wheel ABS solenoid valve (39) and the right side are non-driven
Brake chamber (40) are taken turns to be connected by gas circuit;
Right non-driving wheel brake-pressure sensor (41) is installed on right non-driving wheel brake chamber (40);
Right driving wheel wheel speed sensors (14), left driving wheel wheel speed sensors (25), left non-driving wheel wheel speed sensors (36), the right side
Non-driving wheel wheel speed sensors (42) are connected by signal wire with brake monitor (31);
Right driving wheel ABS solenoid valve (19), left driving wheel ABS solenoid valve (20), left non-driving wheel ABS solenoid valve (38), the right side are non-
Driving wheel ABS solenoid valve (39) is connected by signal wire with brake monitor (31);
Switch electromagnetic valve (5), the linear exhaust solenoid valve of drive shaft (7), right driving wheel brake-pressure sensor (17), left driving wheel
Brake-pressure sensor (22), right non-driving wheel brake-pressure sensor (41) and brake pedal displacement sensor (45) pass through letter
Number line is connected with entire car controller (30);
It is right driving wheel drive motor controller (16), left driving wheel drive motor controller (23), battery management system (29), whole
Vehicle controller (30) is connected with brake monitor (31) by CAN bus.
2. the two-wheeled acoustic filed electric vehicle system according to claim 1 based on double-way check valve and linear exhaust solenoid valve
Energy recovery system, entire car controller (30) are based on speed, the brake pedal that brake monitor (31) are exported by CAN bus
Pedal displacement signal, the battery management system (29) of displacement sensor (45) output are allowed most by the battery that CAN bus exports
Big charging current, the right driving wheel driving motor and transmission that right driving wheel drive motor controller (16) is exported by CAN bus
The right driving wheel maximum motor brake force that device (15) can be provided, left driving wheel drive motor controller (23) are total by CAN
The left driving wheel maximum motor brake force that the left driving wheel driving motor and transmission device (24) of line output can be provided, judgement are
No triggering braking energy recovering function, and control switch solenoid valve (5) and the linear exhaust solenoid valve of drive shaft (7) accordingly, it is special
Sign is:
When brake pedal and triggering braking energy recovering function, entire car controller (30) control switch solenoid valve (5) is led
Logical, the gas circuit between secondary air accumulator (3) port b and the linear exhaust solenoid valve of drive shaft (7) port a is connected, entire car controller
(30) the control linear exhaust solenoid valve of drive shaft (7) is in close state, and exhaust port c is not communicated with atmosphere;It is made when stepping on
When moving pedal, but not triggering braking energy recovering function, entire car controller (30) control switch solenoid valve (5) is off shape
State, the gas circuit between secondary air accumulator (3) port b and the linear exhaust solenoid valve of drive shaft (7) port a are not turned on, entire car controller
(30) the control linear exhaust solenoid valve of drive shaft (7) is in close state, and exhaust port c is not communicated with atmosphere;Work as driver
Loosen the brake (1) when, entire car controller (30) control switch solenoid valve (5) disconnects pair air accumulator (3) port b and drive shaft
Air circuit connection between linear exhaust solenoid valve (7) port a, entire car controller (30) control the linear exhaust solenoid valve of drive shaft
(7) in the open state, exhaust port c is communicated with atmosphere, and it is logical with brake pedal displacement sensor (45) to control its aperture
Cross the proportional relationship of pedal displacement signal of signal wire output.
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CN201910429062.7A CN110103916B (en) | 2019-05-22 | 2019-05-22 | Two-wheeled distributed drive electric vehicle braking energy recovery system based on two-way check valve and linear exhaust electromagnetic valve |
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