CN207875612U - A kind of line traffic control electro-hydraulic brake system - Google Patents
A kind of line traffic control electro-hydraulic brake system Download PDFInfo
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- CN207875612U CN207875612U CN201820084861.6U CN201820084861U CN207875612U CN 207875612 U CN207875612 U CN 207875612U CN 201820084861 U CN201820084861 U CN 201820084861U CN 207875612 U CN207875612 U CN 207875612U
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Abstract
The utility model discloses a kind of line traffic control electro-hydraulic brake systems, including electronic control unit, hydraulic control unit, brake operating mechanism, brake master cylinder assy, wheel drag assembly and hydraulic circuit；Brake operating mechanism includes pedal and pedal rotary angle transmitter, and pedal rotary angle transmitter is connect with pedal；It includes piston push rod, intermediate piston, master cylinder, fluid reservoir, pedal sense simulator, pedal sense simulator check valve and pedal sense simulator connection valve that master cylinder assembly is moved in braking.The utility model can realize four kinds of braking methods：Conventional brake method, failure alternate brake method, antero posterior axis braking force distribution braking method and ABS antilock braking methods, and it can be used for electric vehicle and realize coordination regenerative braking, motor, accumulator and each valve are controlled by coordination, realizes the switching of different braking function.Tthe utility model system response time is fast, hydraulic regulation precision is high, and expanding function is strong, product integrated level is high, can promote tolerance, response time and severity of braking of active brake system etc..
Description
Technical field
The utility model is related to vehicle brake technology field more particularly to a kind of line traffic control electro-hydraulic brake systems.
Background technology
In current market for automobiles, the braking system of most automobiles continues to use helping for engine driving vacuum booster pump
Power mode is up to 40 years, so as to reducing the cost and improving the potentiality of function very little under the principle.Following pure electric vehicle/mixing is dynamic
The market potential of power automobile is very huge.While continuing to use existing vacuum booster/electronic vacuum structure of actuator, main engine plants
There is an urgent need to certain new-type line control brake systems, can not only reduce cost, size and energy consumption, also can seamless cooperative achievement Brake Energy
Measure the advanced functions such as recycling, auxiliary braking, active brake.
Feature in brake-by-wire structure is, eliminates vacuum booster unit, not only saves installation space, also thorough
Undercutting has been broken being associated with of engine system and braking system.The independent of engine system and braking system, it is meant that once hair
Motivation failure or it is flame-out caused by the factors such as vacuum booster vacuum degree deficiency or failure, no longer influence whether braking system
Efficiency, to improve the stability of braking system.Pedal and the concept of high-pressure brake circuit decoupling make vehicle braking simultaneously
System while the somatosensory and mood for not influencing driver, be capable of providing more intelligent active safety function and efficiently
Regenerative braking capability.Many main engine plants and parts factory have carried out design and research for many years to electronic hydraulic brake system,
Portioned product has also carried out volume production, but be limited by the components such as high pressure accumulator frequently use caused integrity problem, accumulation of energy
The electronic hydraulic brake system of device formula comes there is no universal, and more perfect design scheme is still being sought by many producers.
104828053 A of China Patent No. CN, publication date August in 2015 12 days, a kind of entitled " energy-saving electronic liquid
Pressure braking system and its control method " discloses a kind of energy-saving electronic brake fluid system and its control method, deficiency
Be in：（1）Level of integrated system is relatively low；（2）Pressure interference effect is more apparent between wheel braking wheel cylinder；（3）Lack pressure
Balancing device.
Utility model content
The purpose of this utility model is to overcome deficiency in the prior art, provide a kind of level of integrated system it is high, can
Rapid switching braking mode, the line traffic control electro-hydraulic brake system for improving braking safety and capacity usage ratio.
To achieve the goals above, the utility model uses following technical scheme：
A kind of line traffic control electro-hydraulic brake system, including electronic control unit, hydraulic control unit, brake operating mechanism, braking
Master cylinder assembly, wheel drag assembly and hydraulic circuit；The brake operating mechanism includes pedal and pedal rotary angle transmitter, institute
Pedal rotary angle transmitter is stated to connect with pedal；The brake master cylinder assy include piston push rod, intermediate piston, master cylinder, fluid reservoir,
Pedal sense simulator, pedal sense simulator check valve and pedal sense simulator connection valve, the piston push rod and pedal
Connection, pedal rotary angle transmitter are between pedal and piston push rod, and piston push rod is in one end of master cylinder shell, intermediate piston
It is arranged in master cylinder, the first return spring is equipped between piston push rod and intermediate piston, intermediate piston will be separated into inside master cylinder
The first hydraulic cavities of master cylinder and the second hydraulic cavities of master cylinder, are equipped with the second return spring between intermediate piston and the master cylinder shell other end,
Master cylinder the first hydraulic cavities oil inlet is connect with fluid reservoir, and master cylinder the second hydraulic cavities oil inlet is connect with fluid reservoir, the pedal sense
Feel that simulator is connect with pedal sense simulator connection valve oil outlet, pedal sense simulator connection valve oil inlet and master cylinder first
Hydraulic cavities oil outlet connects, and pedal sense simulator check valve oil inlet is connect with pedal sense simulator connection valve oil outlet,
Pedal sense simulator check valve oil outlet is connect with pedal sense simulator connection valve oil inlet；The wheel drag assembly
Including four wheel braking wheel cylinders and four wheel speed sensors, the wheel speed sensors are arranged in one-to-one wheel braking wheel
On cylinder；The hydraulic circuit includes electric-motor pump boost module and return circuit module, and the motor pump module includes eccentric spindle motor, column
Plug pump, high pressure accumulator and accumulator hydrostatic sensor, the bias spindle motor are connect with plunger pump by shaft coupling, the column
Plug pump oil inlet is connect with fluid reservoir, and plunger pump oil outlet is connect with high pressure accumulator, and high pressure accumulator is passed with accumulator hydraulic pressure
Sensor connects.
Preferably, the return circuit module includes the first circuit and second servo loop, first circuit includes the first circuit
Control valve, the first circuit isolating valve, the first loop hydraulic sensor, the near front wheel pressure charging valve, the near front wheel pressure reducing valve, the near front wheel are unidirectional
Valve, the near front wheel wheel cylinder, off hind wheel pressure charging valve, off hind wheel pressure reducing valve, off hind wheel check valve and off hind wheel wheel cylinder, it is described
First circuit control valve oil inlet is connect with the second master cylinder hydraulic pressure chamber oil outlet, and the first circuit control valve oil outlet increases with the near front wheel
Pressure valve oil inlet connects, and the near front wheel pressure charging valve oil outlet is connect with the near front wheel wheel cylinder, the near front wheel check valve oil inlet and a left side
Front-wheel pressure charging valve oil outlet connects, and the near front wheel check valve oil outlet is connect with the near front wheel pressure charging valve oil inlet, the near front wheel pressure reducing valve
Oil inlet is connect with the near front wheel wheel cylinder, and the near front wheel pressure reducing valve oil outlet is connect with fluid reservoir, first circuit isolating valve
Oil inlet is connect with high pressure accumulator oil outlet, and the first circuit isolating valve oil outlet is connect with the first circuit control valve oil outlet,
First circuit isolating valve oil outlet is connect with the first loop hydraulic sensor, and the first circuit isolating valve oil outlet is pressurized with off hind wheel
Valve oil inlet connects, and off hind wheel pressure charging valve oil outlet is connect with off hind wheel wheel cylinder, after off hind wheel check valve oil inlet and the right side
Take turns the connection of pressure charging valve oil outlet, off hind wheel check valve oil outlet connect with off hind wheel pressure charging valve oil inlet, off hind wheel pressure reducing valve into
Hydraulic fluid port is connect with off hind wheel wheel cylinder, and off hind wheel pressure reducing valve oil outlet is connect with fluid reservoir；The second servo loop includes second
Circuit control valve, second servo loop isolating valve, second servo loop hydrostatic sensor, left rear wheel pressure charging valve, left rear wheel pressure reducing valve, left rear wheel
Check valve, left rear wheel wheel cylinder, off-front wheel pressure charging valve, off-front wheel pressure reducing valve, off-front wheel check valve and off-front wheel wheel cylinder,
The second servo loop control valve oil inlet is connect with the first master cylinder hydraulic pressure chamber oil outlet, second servo loop control valve oil outlet with it is left back
The connection of pressure charging valve oil inlet is taken turns, left rear wheel pressure charging valve oil outlet is connect with left rear wheel wheel cylinder, left rear wheel check valve oil inlet
It is connect with left rear wheel pressure charging valve oil outlet, left rear wheel check valve oil outlet is connect with left rear wheel pressure charging valve oil inlet, and left rear wheel subtracts
Pressure valve oil inlet is connect with left rear wheel wheel cylinder, and left rear wheel pressure reducing valve oil outlet is connect with fluid reservoir, the second servo loop every
It is connect with high pressure accumulator oil outlet from valve oil inlet, second servo loop isolating valve oil outlet connects with second servo loop control valve oil outlet
It connects, second servo loop isolating valve oil outlet is connect with second servo loop hydrostatic sensor, second servo loop isolating valve oil outlet and off-front wheel
Pressure charging valve oil inlet connects, and off-front wheel pressure charging valve oil outlet connect with off-front wheel wheel cylinder, off-front wheel check valve oil inlet and
Off-front wheel pressure charging valve oil outlet connects, and off-front wheel check valve oil outlet is connect with off-front wheel pressure charging valve oil inlet, off-front wheel decompression
Valve oil inlet is connect with off-front wheel wheel cylinder, and off-front wheel pressure reducing valve oil outlet is connect with fluid reservoir.The utility model is using inclined
Spindle motor, plunger pump and high pressure accumulator give high pressure accumulator filling liquid as pressure source, by eccentric spindle motor and plunger pump
Pressurization, in conventional brake, high pressure accumulator release liquid is depressed into wheel cylinder and generates brake force.High pressure accumulator can reduce electric-motor pump
Operating noise, promoted motor service life；Meanwhile electric-motor pump can also individually build pressure and realize braking, with high pressure accumulator
It backups each other, forms brake safe redundancy.The utility model can apply with conventional internal combustion rolling stock, can also be applied to need to regenerate
The new energy vehicle of braking function and the automatic driving vehicle for needing active/auxiliary brake function.The hydraulic pressure of the utility model returns
Road is dexterously separated into conventional brake and failure under the premise of not influencing to fail oblique circuits by isolating valve and control valve
Alternate brake hydraulic circuit reduces the pressure control complexity under regenerative braking, improves system reliability.Electric-motor pump is increased
Die block, pedal sense simulator, electronic control unit and hydraulic control unit become one, and installation volume is made to be subtracted
Small, the risk of hydraulic fluid leak is also minimized.The separation design of pedal and wheel cylinder, compared under Conventional braking systems
Regenerative braking capability and ABS functions, there is no pedal shake sense, and driver pedal power, pedal displacement and vehicle braking force three
Person's relationship linearity is high, optimizes operator brake feeling.The signal that pedal angle sensor provides passes through electronic control unit
It calculates, can recognize that the braking intention of driver, to trigger the functions such as emergency braking/auxiliary braking, improve system response
Speed simultaneously reduces braking distance.
Preferably, first circuit control valve and second servo loop control valve are power-off normally open valve, the isolation of the first circuit
Valve and second servo loop isolating valve are power-off normally close valve, and pedal sense simulator connection valve is to power off normally close valve, the near front wheel pressure charging valve,
Off hind wheel pressure charging valve, left rear wheel pressure charging valve and off-front wheel pressure charging valve are power-off normally open valve, the near front wheel pressure reducing valve, off hind wheel decompression
Valve, left rear wheel pressure reducing valve and off-front wheel pressure reducing valve are power-off normally close valve.It is dexterously separated into often by isolating valve and control valve
Regulation is dynamic and failure alternate brake hydraulic circuit, the pressure reduced under regenerative braking control complexity, it is reliable to improve system
Property.
Preferably, including elastic element, cylinder body and emulator piston, the elasticity member in the pedal sense simulator
Part includes two sections of springs, and emulator piston is in cylinder body one end, and spring is between cylinder body and emulator piston, and spring one end
With another end in contact of cylinder body, the spring other end is contacted with emulator piston.Two sections of springs can in conjunction with the first return spring
The feel curve of a simulation three-stage, i.e. pedal force-pedal travel curve are provided for driver, with stepping on for Conventional braking systems
Plate feel is closer to, and reduces the adaptive learning cost of driver.
Preferably, the return circuit module is arranged in a hydraulic valve block.It in volume production, is easily installed, reduces
Installation steps save manpower.
The beneficial effects of the utility model：（1）Cancel vacuum booster and Motorized vacuum pump part, and will electronic control
Unit, hydraulic control unit, electric-motor pump boost module and pedal simulator are integrated in one, and reduce installation volume and weight；
（2）Using eccentric spindle motor, plunger pump and high pressure accumulator as pressure source, stored to high pressure by eccentric spindle motor and plunger pump
Energy device filling liquid pressurization, in conventional brake, high pressure accumulator release liquid is depressed into wheel cylinder and generates brake force.High pressure accumulator can drop
The operating noise of low electric-motor pump, the service life for promoting motor；Meanwhile motor pump group part can also work independently and build pressure realization system
It is dynamic, it backups each other with high pressure accumulator, forms brake safe redundancy.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model conventional brake method hydraulic oil flow graph.
In figure：Fluid reservoir 1, master cylinder 2, piston push rod 3, pedal 4, pedal rotary angle transmitter 5, the first hydraulic cavities of master cylinder 6, in
Between piston 7, the second hydraulic cavities of master cylinder 8, plunger pump 9, high pressure accumulator 10, accumulator hydrostatic sensor 11, pedal sense simulation
Device connection valve 12, pedal sense simulator check valve 13, pedal sense simulator 14, the first circuit control valve 15, second servo loop
Control valve 16, the first circuit isolating valve 17, second servo loop isolating valve 18, the first loop hydraulic sensor 19, second servo loop hydraulic pressure
Sensor 20, the near front wheel pressure reducing valve 21, the near front wheel pressure charging valve 22, the near front wheel wheel cylinder 23, the near front wheel wheel speed sensors 24, the right side
Trailing wheel pressure reducing valve 25, off hind wheel pressure charging valve 26, off hind wheel wheel cylinder 27, off hind wheel wheel speed sensors 28, left rear wheel pressure reducing valve
29, left rear wheel pressure charging valve 30, left rear wheel wheel cylinder 31, left rear wheel wheel speed sensors 32, off-front wheel pressure reducing valve 33, off-front wheel increase
Pressure valve 34, off-front wheel wheel cylinder 35, off-front wheel wheel speed sensors 36.
Specific implementation mode
The structure of the utility model and operation principle are further described in the following with reference to the drawings and specific embodiments：
As depicted in figs. 1 and 2, a kind of line traffic control electro-hydraulic brake system, including electronic control unit, hydraulic control unit, system
Dynamic operating mechanism, brake master cylinder assy, wheel drag assembly and hydraulic circuit；The brake operating mechanism include pedal 4 and
Pedal rotary angle transmitter 5, the pedal rotary angle transmitter 5 are connect with pedal 4；The brake master cylinder assy include piston push rod 3,
Intermediate piston 7, master cylinder 2, fluid reservoir 1, pedal sense simulator 14, pedal sense simulator check valve 13 and pedal sense simulation
Device connection valve 12, the piston push rod 3 are connect with pedal 4, and pedal rotary angle transmitter 5 is between pedal 4 and piston push rod 3,
Piston push rod 3 is in one end of 2 shell of master cylinder, and intermediate piston 7 is arranged in master cylinder 2, between piston push rod 3 and intermediate piston 7
Equipped with the first return spring, intermediate piston 7 will be separated into the first hydraulic cavities of master cylinder 6 and the second hydraulic cavities of master cylinder 8 inside master cylinder 2,
The second return spring, 6 oil inlet of the first hydraulic cavities of master cylinder and fluid reservoir 1 are equipped between the 2 shell other end of intermediate piston 7 and master cylinder
Connection, 8 oil inlet of the second hydraulic cavities of master cylinder are connect with fluid reservoir 1, the pedal sense simulator 14 and pedal sense simulator
12 oil outlet of connection valve connects, and 12 oil inlet of pedal sense simulator connection valve connect with 6 oil outlet of the first hydraulic cavities of master cylinder, steps on
13 oil inlet of plate sense simulator check valve is connect with 12 oil outlet of pedal sense simulator connection valve, pedal sense simulator list
It is connect to 13 oil outlet of valve with 12 oil inlet of pedal sense simulator connection valve；The wheel drag assembly includes four wheels
Wheel cylinder and four wheel speed sensors, the wheel speed sensors are arranged on one-to-one wheel braking wheel cylinder；The liquid
It includes electric-motor pump boost module and return circuit module to push back road, and the motor pump module includes eccentric spindle motor, plunger pump 9, high pressure
Accumulator 10 and accumulator hydrostatic sensor 11, the bias spindle motor are connect with plunger pump 9 by shaft coupling, the plunger pump
9 oil inlets are connect with fluid reservoir 1, and 9 oil outlet of plunger pump is connect with high pressure accumulator 10, high pressure accumulator 10 and accumulator hydraulic pressure
Sensor 11 connects.
The return circuit module include the first circuit and second servo loop, first circuit include the first circuit control valve 15,
First circuit isolating valve 17, the first loop hydraulic sensor 19, the near front wheel pressure charging valve 22, the near front wheel pressure reducing valve 21, the near front wheel list
It is braked to valve, the near front wheel wheel cylinder 23, off hind wheel pressure charging valve 26, off hind wheel pressure reducing valve 25, off hind wheel check valve and off hind wheel
Wheel cylinder 27, first circuit control valve, 15 oil inlet are connect with 8 oil outlet of the second master cylinder hydraulic pressure chamber, the first circuit control valve 15
Oil outlet is connect with 22 oil inlet of the near front wheel pressure charging valve, and 22 oil outlet of the near front wheel pressure charging valve is connect with the near front wheel wheel cylinder 23,
The near front wheel check valve oil inlet is connect with 22 oil outlet of the near front wheel pressure charging valve, the near front wheel check valve oil outlet and the near front wheel pressure charging valve
22 oil inlets connect, and 21 oil inlet of the near front wheel pressure reducing valve is connect with the near front wheel wheel cylinder 23,21 oil outlet of the near front wheel pressure reducing valve
It is connect with fluid reservoir 1, first circuit isolating valve, 17 oil inlet is connect with 10 oil outlet of high pressure accumulator, the isolation of the first circuit
17 oil outlet of valve is connect with 15 oil outlet of the first circuit control valve, and 17 oil outlet of the first circuit isolating valve and the first loop hydraulic pass
Sensor 19 connects, and 17 oil outlet of the first circuit isolating valve is connect with 26 oil inlet of off hind wheel pressure charging valve, and off hind wheel pressure charging valve 26 goes out
Hydraulic fluid port is connect with off hind wheel wheel cylinder 27, and off hind wheel check valve oil inlet is connect with 26 oil outlet of off hind wheel pressure charging valve, after right
Wheel check valve oil outlet is connect with 26 oil inlet of off hind wheel pressure charging valve, 25 oil inlet of off hind wheel pressure reducing valve and off hind wheel wheel cylinder
27 connections, 25 oil outlet of off hind wheel pressure reducing valve are connect with fluid reservoir 1；The second servo loop includes second servo loop control valve 16,
Secondary circuit isolating valve 18, second servo loop hydrostatic sensor 20, left rear wheel pressure charging valve 30, left rear wheel pressure reducing valve 29, left rear wheel are unidirectional
Valve, left rear wheel wheel cylinder 31, off-front wheel pressure charging valve 34, off-front wheel pressure reducing valve 33, off-front wheel check valve and off-front wheel braked wheel
35 cylinders, 16 oil inlet of second servo loop control valve are connect with 6 oil outlet of the first master cylinder hydraulic pressure chamber, and second servo loop control valve 16 goes out
Hydraulic fluid port is connect with 30 oil inlet of left rear wheel pressure charging valve, and 30 oil outlet of left rear wheel pressure charging valve is connect with left rear wheel wheel cylinder 31, left
Trailing wheel check valve oil inlet is connect with 30 oil outlet of left rear wheel pressure charging valve, left rear wheel check valve oil outlet and left rear wheel pressure charging valve 30
Oil inlet connects, and 29 oil inlet of left rear wheel pressure reducing valve connect with left rear wheel wheel cylinder 31,29 oil outlet of left rear wheel pressure reducing valve and
Fluid reservoir 1 connects, and 18 oil inlet of second servo loop isolating valve is connect with 10 oil outlet of high pressure accumulator, second servo loop isolating valve
18 oil outlets are connect with 16 oil outlet of second servo loop control valve, 18 oil outlet of second servo loop isolating valve and second servo loop hydraulic sensing
Device 20 connects, and 18 oil outlet of second servo loop isolating valve is connect with 34 oil inlet of off-front wheel pressure charging valve, and off-front wheel pressure charging valve 34 is fuel-displaced
Mouth is connect with off-front wheel wheel cylinder 35, and off-front wheel check valve oil inlet is connect with 34 oil outlet of off-front wheel pressure charging valve, off-front wheel
Check valve oil outlet is connect with 34 oil inlet of off-front wheel pressure charging valve, 33 oil inlet of off-front wheel pressure reducing valve and off-front wheel wheel cylinder 35
Connection, 33 oil outlet of off-front wheel pressure reducing valve are connect with fluid reservoir 1.
First circuit control valve 15 and second servo loop control valve 16 are power-off normally open valve, the first circuit isolating valve 17 and
Second servo loop isolating valve 18 is power-off normally close valve, and pedal sense simulator connection valve 12 is power-off normally close valve, the near front wheel pressure charging valve
22, off hind wheel pressure charging valve 26, left rear wheel pressure charging valve 30 and off-front wheel pressure charging valve 34 are to power off normally open valve, the near front wheel pressure reducing valve 21,
Off hind wheel pressure reducing valve 25, left rear wheel pressure reducing valve 29 and 33 pressure reducing valve of off-front wheel are power-off normally close valve.
Include elastic element, cylinder body and emulator piston in the pedal sense simulator 14, the elastic element includes
Two sections of springs, emulator piston are in cylinder body one end, and spring is between cylinder body and emulator piston, and spring one end and cylinder body
Another end in contact, the spring other end contacts with emulator piston.
The return circuit module is arranged in a hydraulic valve block.
In the present embodiment, under conventional brake pattern, electronic control unit control the first circuit isolating valve and second servo loop every
It is powered and opens from valve, the first circuit control valve and second servo loop control valve are powered and close, and pedal sense simulator connection valve is powered
It opens, driver steps on pedal, and a part of hydraulic oil in the first hydraulic cavities of master cylinder is pushed into pedal sense simulator, pedal sense
Feel that the first return spring of groups of springs and the first hydraulic cavities of master cylinder in simulator provides braking feel for driver, pedal passes through
Pedal rotary angle transmitter measures deflection angle, sends out signal, passes to electronic control unit, and subsequent electronic control unit passes through inclined
Gyration calculates and needs the brake pressure that generates, and eccentric spindle motor is driven to rotate, and drives plunger pump work, hydraulic oil from
Plunger pump is flowed in fluid reservoir and enters high pressure accumulator, and the high-pressure and hydraulic oil in high pressure accumulator is that two-way flows to the respectively
Primary Ioops isolating valve and second servo loop isolating valve, at this time electronic control unit control the near front wheel pressure charging valve, off hind wheel pressure charging valve, a left side
Trailing wheel pressure charging valve and the power-off of off-front wheel pressure charging valve are opened, before the near front wheel pressure reducing valve, off hind wheel pressure reducing valve, left rear wheel pressure reducing valve and the right side
It takes turns pressure reducing valve power-off to close, hydraulic oil is again split into two-way after the first circuit isolating valve, and first via hydraulic oil passes through left front
Wheel pressure charging valve enters the near front wheel wheel cylinder, and the second road hydraulic oil enters off hind wheel wheel cylinder, liquid by off hind wheel pressure charging valve
Pressure oil is equally divided into two-way after second servo loop isolating valve, and third road hydraulic oil enters left rear wheel system by left rear wheel pressure charging valve
Driving wheel cylinder, the 4th road hydraulic oil enter off-front wheel wheel cylinder by off-front wheel pressure charging valve, and hydraulic oil is in four braked wheels at this time
Pressure is generated in cylinder, wheel is braked, and the first loop hydraulic sensor and second servo loop hydrostatic sensor are electronics at this time
Control unit provides the feedback signal of current first circuit and second servo loop pressure, the movement feelings of list control unit combination pedal
Half section of condition increases, subtracts, pressurize action, for the decompression under conventional brake pattern, while be powered open four pressure reducing valves or
Open simultaneously different two pressure reducing valves for opening simultaneously different circuit all can, the hydraulic oil in wheel braking wheel cylinder can be by subtracting
Pressure valve enters fluid reservoir, is depressurized to whole system, you can terminates wheel braking action.The eccentric spindle motor of the utility model use,
Plunger pump and high pressure accumulator are pressurizeed by eccentric spindle motor and plunger pump to high pressure accumulator filling liquid, as pressure source normal
When regulation is moved, high pressure accumulator release liquid is depressed into wheel cylinder and generates brake force.The work that high pressure accumulator can reduce electric-motor pump is made an uproar
Sound, the service life for promoting motor；Meanwhile electric-motor pump can also individually build pressure and realize braking, backup each other with high pressure accumulator,
Form brake safe redundancy.The utility model can apply with conventional internal combustion rolling stock, can also be applied to need regenerative braking capability
New energy vehicle and need the automatic driving vehicle of active/auxiliary brake function.The hydraulic circuit of the utility model is in not shadow
Under the premise of ringing failure oblique circuits, conventional brake and failure alternate brake are dexterously separated by isolating valve and control valve
Hydraulic circuit reduces the pressure control complexity under regenerative braking, improves system reliability.By electric-motor pump boost module,
Pedal sense simulator, electronic control unit and hydraulic control unit become one, and installation volume is made to be reduced, hydraulic oil
The risk of leakage is also minimized.The separation design of pedal and wheel cylinder, compared to the regeneration system under Conventional braking systems
Dynamic function and ABS functions, do not have pedal shake sense, and driver pedal power, pedal displacement and vehicle braking force triadic relation's line
Property degree it is high, optimize operator brake feeling.The signal that pedal angle sensor provides is calculated by electronic control unit, can be known
The braking intention for not going out driver, to triggering the functions such as emergency braking/auxiliary braking, improving system response time and reducing
Braking distance.
Claims (5)
1. a kind of line traffic control electro-hydraulic brake system, characterized in that including electronic control unit, hydraulic control unit, braking maneuver machine
Structure, brake master cylinder assy, wheel drag assembly and hydraulic circuit；
The brake operating mechanism includes pedal and pedal rotary angle transmitter, and the pedal rotary angle transmitter is connect with pedal；
The brake master cylinder assy includes piston push rod, intermediate piston, master cylinder, fluid reservoir, pedal sense simulator, pedal sense
Simulator check valve and pedal sense simulator connection valve, the piston push rod are connect with pedal, and pedal rotary angle transmitter is in
Between pedal and piston push rod, piston push rod is in one end of master cylinder shell, and intermediate piston is arranged in master cylinder, intermediate piston with
The first return spring is equipped between intermediate piston, intermediate piston will be separated into the first hydraulic cavities of master cylinder and master cylinder second inside master cylinder
Hydraulic cavities are equipped with the second return spring, master cylinder the first hydraulic cavities oil inlet and storage between intermediate piston and the master cylinder shell other end
Flow container connects, and master cylinder the second hydraulic cavities oil inlet is connect with fluid reservoir, the pedal sense simulator and pedal sense simulator
Connection valve oil outlet connects, and pedal sense simulator connection valve oil inlet is connect with master cylinder the first hydraulic cavities oil outlet, pedal sense
Feel that simulator check valve oil inlet is connect with pedal sense simulator connection valve oil outlet, pedal sense simulator check valve is fuel-displaced
Mouth is connect with pedal sense simulator connection valve oil inlet；
The wheel drag assembly includes four wheel braking wheel cylinders and four wheel speed sensors, the wheel speed sensors setting
On one-to-one wheel braking wheel cylinder；
The hydraulic circuit includes electric-motor pump boost module and return circuit module, and the motor pump module includes eccentric spindle motor, column
Plug pump, high pressure accumulator and accumulator hydrostatic sensor, the bias spindle motor are connect with plunger pump by shaft coupling, the column
Plug pump oil inlet is connect with fluid reservoir, and plunger pump oil outlet is connect with high pressure accumulator, and high pressure accumulator is passed with accumulator hydraulic pressure
Sensor connects.
2. a kind of line traffic control electro-hydraulic brake system according to claim 1, characterized in that the return circuit module includes first time
Road and second servo loop, first circuit include the first circuit control valve, the first circuit isolating valve, the first loop hydraulic sensing
Device, the near front wheel pressure charging valve, the near front wheel pressure reducing valve, the near front wheel check valve, the near front wheel wheel cylinder, off hind wheel pressure charging valve, off hind wheel
Pressure reducing valve, off hind wheel check valve and off hind wheel wheel cylinder, the first circuit control valve oil inlet and the second master cylinder hydraulic pressure chamber
Oil outlet connects, and the first circuit control valve oil outlet connect with the near front wheel pressure charging valve oil inlet, the near front wheel pressure charging valve oil outlet and
The near front wheel wheel cylinder connects, and the near front wheel check valve oil inlet is connect with the near front wheel pressure charging valve oil outlet, and the near front wheel check valve goes out
Hydraulic fluid port is connect with the near front wheel pressure charging valve oil inlet, and the near front wheel pressure reducing valve oil inlet is connect with the near front wheel wheel cylinder, and the near front wheel subtracts
Pressure valve oil outlet is connect with fluid reservoir, and the first circuit isolating valve oil inlet is connect with high pressure accumulator oil outlet, first time
Road isolating valve oil outlet is connect with the first circuit control valve oil outlet, and the first circuit isolating valve oil outlet and the first loop hydraulic pass
Sensor connects, and the first circuit isolating valve oil outlet is connect with off hind wheel pressure charging valve oil inlet, off hind wheel pressure charging valve oil outlet and the right side
Rear service brake wheel cylinder connects, and off hind wheel check valve oil inlet is connect with off hind wheel pressure charging valve oil outlet, and off hind wheel check valve is fuel-displaced
Mouth is connect with off hind wheel pressure charging valve oil inlet, and off hind wheel pressure reducing valve oil inlet is connect with off hind wheel wheel cylinder, off hind wheel decompression
Valve oil outlet is connect with fluid reservoir；
The second servo loop includes second servo loop control valve, second servo loop isolating valve, second servo loop hydrostatic sensor, left rear wheel increasing
Before pressure valve, left rear wheel pressure reducing valve, left rear wheel check valve, left rear wheel wheel cylinder, off-front wheel pressure charging valve, off-front wheel pressure reducing valve, the right side
Wheel check valve and off-front wheel wheel cylinder, the second servo loop control valve oil inlet are connect with the first master cylinder hydraulic pressure chamber oil outlet,
Second servo loop control valve oil outlet is connect with left rear wheel pressure charging valve oil inlet, left rear wheel pressure charging valve oil outlet and left rear wheel braked wheel
Cylinder connects, and left rear wheel check valve oil inlet is connect with left rear wheel pressure charging valve oil outlet, left rear wheel check valve oil outlet and left rear wheel
Pressure charging valve oil inlet connects, and left rear wheel pressure reducing valve oil inlet connect with left rear wheel wheel cylinder, left rear wheel pressure reducing valve oil outlet and
Fluid reservoir connects, and the second servo loop isolating valve oil inlet is connect with high pressure accumulator oil outlet, and second servo loop isolating valve is fuel-displaced
Mouth is connect with second servo loop control valve oil outlet, and second servo loop isolating valve oil outlet is connect with second servo loop hydrostatic sensor, the
Secondary circuit isolating valve oil outlet is connect with off-front wheel pressure charging valve oil inlet, off-front wheel pressure charging valve oil outlet and off-front wheel wheel cylinder
Connection, off-front wheel check valve oil inlet are connect with off-front wheel pressure charging valve oil outlet, and off-front wheel check valve oil outlet increases with off-front wheel
Pressure valve oil inlet connects, and off-front wheel pressure reducing valve oil inlet is connect with off-front wheel wheel cylinder, off-front wheel pressure reducing valve oil outlet and storage
Flow container connects.
3. a kind of line traffic control electro-hydraulic brake system according to claim 1 or 2, characterized in that first circuit control valve
And second servo loop control valve is power-off normally open valve, the first circuit isolating valve and second servo loop isolating valve are power-off normally close valve, pedal
Sense simulator connection valve is power-off normally close valve, and the near front wheel pressure charging valve, off hind wheel pressure charging valve, left rear wheel pressure charging valve and off-front wheel increase
Pressure valve is power-off normally open valve, and the near front wheel pressure reducing valve, off hind wheel pressure reducing valve, left rear wheel pressure reducing valve and off-front wheel pressure reducing valve are that power-off is normal
Valve closing.
4. a kind of line traffic control electro-hydraulic brake system according to claim 1, characterized in that packet in the pedal sense simulator
Elastic element, cylinder body and emulator piston are included, the elastic element includes two sections of springs, and emulator piston is in cylinder body one end,
Spring is between cylinder body and emulator piston, and another end in contact of spring one end and cylinder body, the spring other end and simulator
Piston contact.
5. a kind of line traffic control electro-hydraulic brake system according to claim 1, characterized in that the return circuit module is arranged at one
In hydraulic valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109927698A (en) * | 2018-01-18 | 2019-06-25 | 万向钱潮股份有限公司 | A kind of line traffic control electro-hydraulic brake system and braking method |
| CN110203185A (en) * | 2019-05-28 | 2019-09-06 | 万向钱潮股份有限公司 | A kind of master cylinder with liquid storage chamber |
| CN111216559A (en) * | 2020-01-22 | 2020-06-02 | 湘潭大学 | Electric vehicle multi-sensor cooperative braking energy recovery system and recovery method |
| CN111572517A (en) * | 2020-05-29 | 2020-08-25 | 四川铭宏芯瑞科技有限公司 | Hydraulic system for realizing high-efficiency energy regenerative braking of vehicle |
| CN112141066A (en) * | 2020-11-03 | 2020-12-29 | 吉林大学 | Integrated electronic control brake system of new energy automobile |
| CN112744202A (en) * | 2019-10-31 | 2021-05-04 | 比亚迪股份有限公司 | Electro-hydraulic brake system, method applied to electro-hydraulic brake system and vehicle |
| CN112776770A (en) * | 2019-11-08 | 2021-05-11 | 比亚迪股份有限公司 | Vehicle brake system and control method thereof |
| CN112849105A (en) * | 2019-11-27 | 2021-05-28 | 比亚迪股份有限公司 | Vehicle brake system, control method and vehicle |
| CN113771815A (en) * | 2021-09-06 | 2021-12-10 | 北京英创汇智科技有限公司 | Vehicle integrated electro-hydraulic braking system device |
| CN113879270A (en) * | 2021-10-08 | 2022-01-04 | 岚图汽车科技有限公司 | Integrated electro-hydraulic braking system and control method thereof |
| CN115384467A (en) * | 2022-09-05 | 2022-11-25 | 浙江极氪智能科技有限公司 | Braking system and vehicle |
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| CN109927698A (en) * | 2018-01-18 | 2019-06-25 | 万向钱潮股份有限公司 | A kind of line traffic control electro-hydraulic brake system and braking method |
| CN110203185B (en) * | 2019-05-28 | 2023-10-24 | 万向钱潮股份公司 | Brake master cylinder with liquid storage cavity |
| CN110203185A (en) * | 2019-05-28 | 2019-09-06 | 万向钱潮股份有限公司 | A kind of master cylinder with liquid storage chamber |
| CN112744202A (en) * | 2019-10-31 | 2021-05-04 | 比亚迪股份有限公司 | Electro-hydraulic brake system, method applied to electro-hydraulic brake system and vehicle |
| CN112776770A (en) * | 2019-11-08 | 2021-05-11 | 比亚迪股份有限公司 | Vehicle brake system and control method thereof |
| CN112849105A (en) * | 2019-11-27 | 2021-05-28 | 比亚迪股份有限公司 | Vehicle brake system, control method and vehicle |
| CN111216559A (en) * | 2020-01-22 | 2020-06-02 | 湘潭大学 | Electric vehicle multi-sensor cooperative braking energy recovery system and recovery method |
| CN111216559B (en) * | 2020-01-22 | 2021-03-26 | 湘潭大学 | Electric vehicle multi-sensor cooperative braking energy recovery system and recovery method |
| CN111572517A (en) * | 2020-05-29 | 2020-08-25 | 四川铭宏芯瑞科技有限公司 | Hydraulic system for realizing high-efficiency energy regenerative braking of vehicle |
| CN111572517B (en) * | 2020-05-29 | 2021-08-06 | 四川铭宏芯瑞科技有限公司 | Hydraulic system for realizing high-efficiency energy regenerative braking of vehicle |
| CN112141066A (en) * | 2020-11-03 | 2020-12-29 | 吉林大学 | Integrated electronic control brake system of new energy automobile |
| WO2023272667A1 (en) * | 2021-06-30 | 2023-01-05 | 华为技术有限公司 | Brake-by-wire system and control method |
| CN113771815A (en) * | 2021-09-06 | 2021-12-10 | 北京英创汇智科技有限公司 | Vehicle integrated electro-hydraulic braking system device |
| CN113879270A (en) * | 2021-10-08 | 2022-01-04 | 岚图汽车科技有限公司 | Integrated electro-hydraulic braking system and control method thereof |
| CN115384467A (en) * | 2022-09-05 | 2022-11-25 | 浙江极氪智能科技有限公司 | Braking system and vehicle |
| CN115384467B (en) * | 2022-09-05 | 2023-11-17 | 浙江极氪智能科技有限公司 | Braking system and vehicle |
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