CN107380152A - A kind of vacuum boost system and electric automobile - Google Patents
A kind of vacuum boost system and electric automobile Download PDFInfo
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- CN107380152A CN107380152A CN201710648071.6A CN201710648071A CN107380152A CN 107380152 A CN107380152 A CN 107380152A CN 201710648071 A CN201710648071 A CN 201710648071A CN 107380152 A CN107380152 A CN 107380152A
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- 238000009489 vacuum treatment Methods 0.000 claims abstract description 46
- 238000007405 data analysis Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 10
- 230000007613 environmental effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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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
- B60T13/24—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 the fluid being gaseous
- B60T13/46—Vacuum systems
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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
- B60T13/24—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 the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/57—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
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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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
Abstract
The invention discloses a kind of vacuum boost system and electric automobile, is related to automobile brake technical field.The vacuum boost system includes pressure sensor, vehicle speed sensor, pedal speed sensor, vacuum treatment unit, vacuum booster and electric vacuum pump.Vacuum treatment unit is according to ambient pressure data, vehicle speed data and the unlatching threshold values and closing threshold values of trampling speed data regulation electric vacuum pump, and when vacuum is less than threshold values is opened, vacuum booster control electric vacuum pump is opened.Compared with force aid system of the prior art, vacuum boost system provided by the invention is as a result of pressure sensor, vehicle speed sensor and the pedal speed sensor being connected with vacuum treatment unit, so the unlatching threshold values of dynamic vavuum pump can be flexibly adjusted according to external condition and closes threshold values, so as to flexibly control being turned on or off for electric vacuum pump, reduce its frequency of use, its service life is improved, it is practical, it is cost-effective.
Description
Technical field
The present invention relates to automobile brake technical field, in particular to a kind of vacuum boost system and electric automobile.
Background technology
Vacuum system is the force aid system in electric automobile brake fluid system, can lift the braking of brake fluid system
Ability, improve driver comfort.Existing vacuum boost system is by detecting the vacuum size in vacuum boost system, and with setting
Fixed threshold values is compared, and to control electric vacuum pump (EVP) start and stop, when vacuum is higher than setting value, is stopped electronic true
Empty pump (EVP), when vacuum is less than setting value, open electric vacuum pump (EVP).And vacuum boost system is in parking of automobile
Afterwards, vacuum in pipeline can not be kept for a long time, after automobile starting, to ensure traffic safety, needing to wait for one can just go after the meeting
Sail.
When speed is relatively low, electric automobile is in non-emergent braking, based on motor braking, if motor braking ability is inadequate
When, just supplement hydraulic braking；During high-speed cruising, electric motor of automobile brake force deficiency, based on hydraulic braking.Inventor studies hair
Existing, current electric vacuum pump can not flexibly open and close according to extraneous circumstance, cause electric vacuum pump frequency of use very
Height, service life reduce, and vacuum boost system can not continue to keep the vacuum in pipeline after automobile flameout.
In view of this, design and manufacture a kind of service life is long, keep for a long time vacuum vacuum boost system and
Electric automobile is particularly particularly important in automobile production.
The content of the invention
It is an object of the invention to provide a kind of vacuum boost system, flexibly can open or close according to external condition
Close, reduce frequency of use, improve service life, it is practical, it is cost-effective.
Another object of the present invention is to provide a kind of electric automobile, vacuum boost system therein can be according to extraneous bar
Part is flexibly turned on or off, and reduces frequency of use, improves service life, practical, cost-effective.
The present invention is realized using following technical scheme.
A kind of vacuum boost system, including pressure sensor, vehicle speed sensor, pedal speed sensor, application of vacuum list
Member, vacuum booster and electric vacuum pump；Pressure sensor is connected with vacuum treatment unit, for detecting ambient pressure environment,
Obtain ambient pressure data；Vehicle speed sensor is connected with vacuum treatment unit, for detecting Vehicle Speed, obtains speed number
According to；Pedal speed sensor is connected with vacuum treatment unit, the speed trampled for detecting pedal, obtains trampling number of speed
According to；Vacuum treatment unit is connected with electric vacuum pump, for foundation ambient pressure data, vehicle speed data and tramples speed data tune
The unlatching threshold values and closing threshold values of section electric vavuum pump；Vacuum booster is connected with electric vacuum pump, for sensing in it
Vacuum less than open threshold values when, control electric vacuum pump open, and for sense its interior vacuum up to or over
When closing threshold values, control electric vacuum pump is closed.
Further, when vehicle speed data and trample the timing of speed data one, if ambient pressure data more than the first preset value,
Vacuum treatment unit control is opened threshold values and reduced, and controls and close threshold values rise；If ambient pressure data is less than the first preset value,
Threshold values rise is opened in vacuum treatment unit control, and is controlled and closed threshold values reduction.
Further, when ambient pressure data and the timing of speed data one is trampled, if vehicle speed data is less than the second preset value,
Vacuum treatment unit control is opened threshold values and reduced, and controls and close threshold values rise；If vehicle speed data data more than the second preset value,
Threshold values rise is opened in vacuum treatment unit control, and is controlled and closed threshold values reduction.
Further, when ambient pressure data and the timing of vehicle speed data one, if trampling speed data is less than the 3rd preset value,
Vacuum treatment unit control is opened threshold values and reduced, and controls and close threshold values rise；If trampling speed data more than the 3rd preset value,
Threshold values rise is opened in vacuum treatment unit control, and is controlled and closed threshold values reduction.
Further, vacuum treatment unit includes data analysis module and control module, pressure sensor, vehicle speed sensor
Be connected with pedal speed sensor with data analysis module, data analysis module be used for receive and analysis environments pressure data,
Vehicle speed data and speed data is trampled, and produce control signal, data analysis module is connected with control module, by control signal
Control module is passed to, control module is connected with electric vacuum pump, and control module is used to adjust Motorized vacuum according to control signal
The unlatching threshold values and closing threshold values of pump.
Further, vacuum treatment unit also includes pre-cooling module, and data analysis module connects with pre-cooling module
Connect, pre-cooling module is connected with electric vacuum pump, when vehicle speed data more than the first critical value or is trampled speed data and exceeded
During the second critical value, pre-cooling module directly controls Motorized vacuum pump startup.
Further, vacuum boost system also includes vacuum tank, and vacuum tank is optionally in communication with the outside, will be electronic true
The air that empty pumping is got in vacuum booster is discharged to the external world, and vacuum tank includes tank body and electric-controlled switch valve, tank body respectively with
Electric vacuum pump connects with vacuum booster, and tank body is provided with the venthole being in communication with the outside, and electric-controlled switch valve is installed on tank body
Outside, the position correspondence of the position of electric-controlled switch valve and venthole, to be selectively opened or close venthole.
Further, electric-controlled switch valve includes switch module and the valve body with an accommodating cavity, and valve body is provided with air inlet
Mouth and gas outlet, air inlet and gas outlet connect with accommodating cavity, and air inlet connects with venthole, and gas outlet connects with extraneous
Logical, switch module is installed in accommodating cavity, to be selectively opened or close air inlet.
Further, switch module includes electromagnet, armature post, elastic component and valve element, and armature post is fixedly connected with valve element,
The shape of valve element is corresponding with the shape of air inlet, and valve element is selectively opened or closed air inlet, and elastic component is sheathed on armature
On post, one end of elastic component is abutted with valve element, and the other end abuts with valve body, and electromagnet is fixedly installed on valve body, and and armature
The one end of post away from valve element is arranged at intervals.
A kind of electric automobile, including automobile body and vacuum boost system, vacuum boost system are installed in automobile body,
Vacuum boost system includes pressure sensor, vehicle speed sensor, pedal speed sensor, vacuum treatment unit, vacuum booster
And electric vacuum pump；Pressure sensor is connected with vacuum treatment unit, for detecting ambient pressure environment, obtains environmental pressure number
According to；Vehicle speed sensor is connected with vacuum treatment unit, for detecting Vehicle Speed, obtains vehicle speed data；Pedal speed passes
Sensor is connected with vacuum treatment unit, the speed trampled for detecting pedal, obtains trampling speed data；Vacuum treatment unit
It is connected with electric vacuum pump, for foundation ambient pressure data, vehicle speed data and tramples speed data regulation electric vacuum pump
Open threshold values and close threshold values；Vacuum booster is connected with electric vacuum pump, for sensing its interior vacuum less than unlatching
During threshold values, control electric vacuum pump is opened, and for when sensing its interior vacuum up to or over threshold values is closed, controlling
Electric vacuum pump is closed.
Vacuum boost system and electric automobile provided by the invention have the advantages that：
Vacuum boost system provided by the invention, pressure sensor detect to obtain ambient pressure data, vehicle speed sensor inspection
Vehicle speed data is measured, pedal speed sensor, which detects to obtain, tramples speed data, and vacuum treatment unit is according to environmental pressure number
According to, vehicle speed data and trample the unlatching threshold values of speed data regulation electric vacuum pump and close threshold values, when vacuum is less than opening
During threshold values, vacuum booster control electric vacuum pump is opened, when vacuum is up to or over threshold values is closed, vacuum booster
Electric vacuum pump is controlled to close.Compared with force aid system of the prior art, vacuum boost system provided by the invention is due to adopting
With the pressure sensor being connected with vacuum treatment unit, vehicle speed sensor and pedal speed sensor, so can be according to outer
Boundary's condition flexibly the unlatching threshold values of the dynamic vavuum pump of regulation and closes threshold values, so as to flexibly control the unlatching of electric vacuum pump or
Person closes, and reduces its frequency of use, improves its service life, practical, cost-effective.
Electric automobile provided by the invention, including vacuum boost system, can flexibly it be adjusted according to external condition dynamic true
The unlatching threshold values and closing threshold values of empty pump, so as to flexibly control being turned on or off for electric vacuum pump, reduce it and use frequency
Rate, its service life is improved, it is practical, it is cost-effective.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structure composition block diagram of vacuum boost system provided in an embodiment of the present invention；
Fig. 2 is the structure that vacuum booster is connected with electric vacuum pump in vacuum boost system provided in an embodiment of the present invention
Composition frame chart；
Fig. 3 is the knot that vacuum treatment unit is connected with electric vacuum pump in vacuum boost system provided in an embodiment of the present invention
Structure composition frame chart；
Fig. 4 is the structural representation of vacuum tank in vacuum boost system provided in an embodiment of the present invention；
Fig. 5 is the configuration schematic diagram of switch module in Fig. 4.
Icon：100- vacuum boost systems；110- pressure sensors；120- vehicle speed sensor；130- pedal speeds sense
Device；140- vacuum treatment units；141- data analysis modules；143- control modules；145- pre-cooling modules；150- vacuum helps
Power device；151- vacuum degree control devices；1511- vacuum sensors；1513- analyzer-controllers；153- booster bodies；160- electricity
Dynamic vavuum pump；170- vacuum tanks；171- tank bodies；1711- ventholes；172- electric-controlled switch valves；174- switch modules；1741- electricity
Magnet；1743- armature posts；1745- elastic components；1747- valve elements；176- valve bodies；1761- houses cavity；1763- air inlets；
1765- gas outlets.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, the instruction such as term " interior ", " outer ", " on ", " under ", " level "
Orientation or position relationship be based on orientation shown in the drawings or position relationship, or the invention product using when usually put
Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.This
Outside, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" connected ", " installation ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Below in conjunction with the accompanying drawings, some embodiments of the present invention are elaborated.It is following in the case where not conflicting
Feature in embodiment can be mutually combined.
Embodiment
Fig. 1 is refer to, the embodiments of the invention provide a kind of electric automobile (not shown), for as communications and transportation work
Tool.The electric automobile includes automobile body (not shown) and vacuum boost system 100.Vacuum boost system 100 is installed on automobile
In body, for lifting the stopping power of automobile body hydraulic braking.The vacuum boost system 100 can be according to external condition spirit
Living is turned on or off, and reduces frequency of use, improves service life, and can keep vacuum in pipeline for a long time not
Become, improve overall performance.
Vacuum boost system 100 includes pressure sensor 110, vehicle speed sensor 120, pedal speed sensor 130, vacuum
Processing unit 140, vacuum booster 150, electric vacuum pump 160 and vacuum tank 170.Pressure sensor 110 and application of vacuum list
Member 140 connects, and for detecting ambient pressure environment, obtains ambient pressure data.Vehicle speed sensor 120 and vacuum treatment unit
140 connections, for detecting Vehicle Speed, obtain vehicle speed data.Pedal speed sensor 130 and vacuum treatment unit 140
Connection, the speed trampled for detecting pedal, obtains trampling speed data.Vacuum treatment unit 140 and electric vacuum pump 160
Connection, for according to ambient pressure data, vehicle speed data and trample speed data regulation electric vacuum pump 160 unlatching threshold values and
Close threshold values.Vacuum booster 150 is connected with electric vacuum pump 160, for sensing its interior vacuum less than unlatching threshold values
When, control electric vacuum pump 160 is opened, and extracts the air in vacuum booster 150, improves the vacuum in vacuum booster 150
Degree；And for when sensing its interior vacuum up to or over threshold values is closed, control electric vacuum pump 160 to be closed.Vacuum
Tank 170 is connected with electric vacuum pump 160 and vacuum booster 150 respectively, and vacuum tank 170 is optionally in communication with the outside, will
The air that electric vacuum pump 160 is drawn into vacuum booster 150 is discharged to the external world.
When vehicle speed data and the timing of speed data one is trampled, if ambient pressure data is more than the first preset value, application of vacuum
The control of unit 140 is opened threshold values and reduced, and controls and close threshold values rise；If ambient pressure data is less than the first preset value, vacuum
Threshold values rise is opened in the control of processing unit 140, and is controlled and closed threshold values reduction.
When ambient pressure data and the timing of speed data one is trampled, if vehicle speed data is less than the second preset value, application of vacuum
The control of unit 140 is opened threshold values and reduced, and controls and close threshold values rise；If vehicle speed data data are more than the second preset value, vacuum
Threshold values rise is opened in the control of processing unit 140, and is controlled and closed threshold values reduction.
When ambient pressure data and the timing of vehicle speed data one, if trampling speed data is less than the 3rd preset value, application of vacuum
The control of unit 140 is opened threshold values and reduced, and controls and close threshold values rise；If speed data is trampled more than the 3rd preset value, vacuum
Threshold values rise is opened in the control of processing unit 140, and is controlled and closed threshold values reduction.
Fig. 2 is refer to, vacuum booster 150 includes vacuum degree control device 151 and booster body 153.Booster body
153 are connected by vacuum degree control device 151 with electric vacuum pump 160, and vacuum degree control device 151 is used to detect booster body
Vacuum in 153, and by it compared with opening threshold values or closing threshold values, and control electric vacuum pump 160 to open or close
Close.
Vacuum degree control device 151 includes vacuum sensor 1511 and analyzer-controller 1513.Vacuum sensor 1511
It is connected with booster body 153, to detect the vacuum in booster body 153, vacuum sensor 1511 and analysis and Control
Device 1513 connects, by vacuum transmission to analyzer-controller 1513.Analyzer-controller 1513 is used for vacuum and opening valve
Value or closing threshold values compare, and control electric vacuum pump 160 to be turned on or off.
Fig. 3 is refer to, vacuum treatment unit 140 includes data analysis module 141, control module 143 and pre-cooling mould
Block 145.Pressure sensor 110, vehicle speed sensor 120 and pedal speed sensor 130 are connected with data analysis module 141,
Data analysis module 141 is for reception and analysis environments pressure data, vehicle speed data and tramples speed data, and produces control letter
Number.Data analysis module 141 is connected with control module 143, and control signal is passed into control module 143, control module 143
Be connected with electric vacuum pump 160, control module 143 be used for according to control signal adjust electric vacuum pump 160 unlatching threshold values and
Close threshold values.Data analysis module 141 is connected with pre-cooling module 145, pre-cooling module 145 and electric vacuum pump 160
Connection, when vehicle speed data is more than the first critical value or when trampling speed data more than the second critical value, pre-cooling module 145
Directly control electric vacuum pump 160 starts, pre-cooling electric vacuum pump 160, maximizes power-assisted effect, improves Brake Energy
Power, improve the security of running car.
Fig. 4 is refer to, vacuum tank 170 includes tank body 171 and electric-controlled switch valve 172.Tank body 171 respectively with electric vacuum pump
160 and vacuum booster 150 connect, tank body 171 is provided with the venthole 1711 being in communication with the outside.Electric-controlled switch valve 172 is installed
In outside tank body 171, the position of electric-controlled switch valve 172 and the position correspondence of venthole 1711, to be selectively opened or close
Venthole 1711.
Electric-controlled switch valve 172 includes switch module 174 and the valve body 176 with an accommodating cavity 1761.Valve body 176 is set
There are air inlet 1763 and gas outlet 1765, air inlet 1763 and gas outlet 1765 connect with accommodating cavity 1761.Air inlet
1763 are connected with venthole 1711, and gas outlet 1765 is in communication with the outside, and switch module 174 is installed in accommodating cavity 1761, with
It is selectively opened or closes air inlet 1763.
Fig. 5 is refer to, switch module 174 includes electromagnet 1741, armature post 1743, elastic component 1745 and valve element 1747.
Armature post 1743 is fixedly connected with valve element 1747, and the shape of valve element 1747 is corresponding with the shape of air inlet 1763, and valve element 1747 selects
Open or close to selecting property air inlet 1763, elastic component 1745 is sheathed on armature post 1743, one end of elastic component 1745 with
Valve element 1747 is abutted, and the other end abuts with valve body 176, and electromagnet 1741 is fixedly installed on valve body 176, and with armature post 1743
One end away from valve element 1747 is arranged at intervals.
It is worth noting that, the operation principle of electric-controlled switch valve 172 is, when automobile starting, electromagnet 1741, which is powered, to be produced
Magnetisation, armature post 1743 are bonded electromagnet 1741 in the presence of magnetic force, and at the same time, armature post 1743 is with movable valve plug 1747
Overcome the elastic force of elastic component 1745 to be subjected to displacement, open air inlet 1763, venthole 1711 is in communication with the outside；When automobile stops
Afterwards, the power-off of electromagnet 1741 loses magnetism, the resilience of band moving armature post 1743 in the presence of the elastic force of elastic component 1745 of valve element 1747,
Air inlet 1763 is closed, venthole 1711 is closed with extraneous, prevents outside air from entering, keep the vacuum in tank body 171
Degree.
In the present embodiment, elastic component 1745 is spring.It is not limited to this, elastic component 1745 can also be elastic rubber
Glue, the material of elastic component 1745 is not especially limited, as long as flexible, valve element 1747 can be held in air inlet 1763
Go up and close the material of the elastic component 1745 of air inlet 1763 within protection scope of the present invention.
Vacuum boost system 100 provided in an embodiment of the present invention, the detection of pressure sensor 110 obtain ambient pressure data,
The detection of vehicle speed sensor 120 obtains vehicle speed data, and the detection of pedal speed sensor 130 obtains trampling speed data, application of vacuum
Unit 140 is according to ambient pressure data, vehicle speed data and unlatching threshold values and the pass of trampling speed data regulation electric vacuum pump 160
Valve closing value, when vacuum is less than threshold values is opened, vacuum booster 150 controls electric vacuum pump 160 to open, when vacuum reaches
Or during more than closing threshold values, vacuum booster 150 controls electric vacuum pump 160 to close.With force aid system of the prior art
Compare, vacuum boost system 100 provided by the invention is as a result of the pressure sensor being connected with vacuum treatment unit 140
110th, vehicle speed sensor 120 and pedal speed sensor 130, so dynamic vavuum pump can flexibly be adjusted according to external condition
Open threshold values and close threshold values, so as to flexibly control being turned on or off for electric vacuum pump 160, reduce its frequency of use,
Its service life is improved, it is practical, it is cost-effective, and rear enclosed air inlet 1763 can be powered off in vehicle, protect for a long time
The vacuum held in pipeline is constant, improves overall performance, makes electric automobile powerful, safety coefficient increase.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of vacuum boost system, it is characterised in that including pressure sensor, vehicle speed sensor, pedal speed sensor, true
Empty processing unit, vacuum booster and electric vacuum pump；
The pressure sensor is connected with the vacuum treatment unit, for detecting ambient pressure environment, obtains environmental pressure number
According to；
The vehicle speed sensor is connected with the vacuum treatment unit, for detecting Vehicle Speed, obtains vehicle speed data；
The pedal speed sensor is connected with the vacuum treatment unit, the speed trampled for detecting pedal, is stepped on
Step on speed data；
The vacuum treatment unit is connected with the electric vacuum pump, for according to the ambient pressure data, the speed number
According to and the speed data of trampling adjust the unlatching threshold values of the electric vacuum pump and close threshold values；
The vacuum booster is connected with the electric vacuum pump, for sensing that its interior vacuum is less than the unlatching threshold values
When, control the electric vacuum pump to open, and be used for when sensing its interior vacuum up to or over the closing threshold values,
The electric vacuum pump is controlled to close.
2. vacuum boost system according to claim 1, it is characterised in that when the vehicle speed data and described trample speed
The timing of data one, if the ambient pressure data controls the unlatching threshold values more than the first preset value, the vacuum treatment unit
Reduce, and control the closing threshold values to raise；If the ambient pressure data is less than the first preset value, the vacuum treatment unit
Control the unlatching threshold values to raise, and control the closing threshold values to reduce.
3. vacuum boost system according to claim 1, it is characterised in that when the ambient pressure data and described trample
The timing of speed data one, if the vehicle speed data is less than the second preset value, the vacuum treatment unit controls the unlatching threshold values
Reduce, and control the closing threshold values to raise；If the vehicle speed data data are more than the second preset value, the vacuum treatment unit
Control the unlatching threshold values to raise, and control the closing threshold values to reduce.
4. vacuum boost system according to claim 1, it is characterised in that when the ambient pressure data and the speed
The timing of data one, if the speed data of trampling is less than the 3rd preset value, the vacuum treatment unit controls the unlatching threshold values
Reduce, and control the closing threshold values to raise；If the speed data of trampling is more than the 3rd preset value, the vacuum treatment unit
Control the unlatching threshold values to raise, and control the closing threshold values to reduce.
5. vacuum boost system according to claim 1, it is characterised in that the vacuum treatment unit includes data analysis
Module and control module, the pressure sensor, the vehicle speed sensor and the pedal speed sensor with the data
Analysis module connects, and the data analysis module is used to receiving and analyze the ambient pressure data, the vehicle speed data and institute
State and trample speed data, and produce control signal, the data analysis module is connected with the control module, by the control
Signal passes to the control module, and the control module is connected with the electric vacuum pump, and the control module is used for basis
The control signal adjusts the unlatching threshold values of the electric vacuum pump and closes threshold values.
6. vacuum boost system according to claim 5, it is characterised in that the vacuum treatment unit also includes opening in advance
Dynamic model block, the data analysis module are connected with the pre-cooling module, the pre-cooling module and the Motorized vacuum
Pump connect, when the vehicle speed data more than the first critical value or it is described trample speed data more than the second critical value when, it is described
Pre-cooling module directly controls the Motorized vacuum pump startup.
7. according to the vacuum boost system described in any one of claim 1 to 6, it is characterised in that the vacuum boost system is also
Including vacuum tank, the vacuum tank is optionally in communication with the outside, and the electric vacuum pump is drawn into the vacuum servo
Air in device is discharged to the external world, and the vacuum tank includes tank body and electric-controlled switch valve, the tank body respectively with it is described electronic true
Empty pump connects with the vacuum booster, and the tank body is provided with the venthole being in communication with the outside, the electric-controlled switch valve installation
In outside the tank body, the position of the electric-controlled switch valve and the position correspondence of the venthole, to be selectively opened or close
Close the venthole.
8. vacuum boost system according to claim 7, it is characterised in that the electric-controlled switch valve include switch module and
Valve body with an accommodating cavity, the valve body are provided with air inlet and gas outlet, the air inlet and the gas outlet with
The accommodating cavity connection, the air inlet connect with the venthole, and the gas outlet is in communication with the outside, the switch module
It is installed in the accommodating cavity, to be selectively opened or close the air inlet.
9. vacuum boost system according to claim 8, it is characterised in that the switch module includes electromagnet, armature
Post, elastic component and valve element, the armature post are fixedly connected with the valve element, the shape of the valve element and the shape of the air inlet
Corresponding, the valve element is selectively opened or closed the air inlet, and the elastic component is sheathed on the armature post, described
One end of elastic component abuts with the valve element, and the other end abuts with the valve body, and the electromagnet is fixedly installed in the valve body
On, and be arranged at intervals with the one end of the armature post away from the valve element.
A kind of 10. electric automobile, it is characterised in that including automobile body and vacuum boost system, the vacuum boost system peace
Loaded in the automobile body, the vacuum boost system include pressure sensor, vehicle speed sensor, pedal speed sensor,
Vacuum treatment unit, vacuum booster and electric vacuum pump；
The pressure sensor is connected with the vacuum treatment unit, for detecting ambient pressure environment, obtains environmental pressure number
According to；
The vehicle speed sensor is connected with the vacuum treatment unit, for detecting Vehicle Speed, obtains vehicle speed data；
The pedal speed sensor is connected with the vacuum treatment unit, the speed trampled for detecting pedal, is stepped on
Step on speed data；
The vacuum treatment unit is connected with the electric vacuum pump, for according to the ambient pressure data, the speed number
According to and the speed data of trampling adjust the unlatching threshold values of the electric vacuum pump and close threshold values；
The vacuum booster is connected with the electric vacuum pump, for sensing that its interior vacuum is less than the unlatching threshold values
When, control the electric vacuum pump to open, and be used for when sensing its interior vacuum up to or over the closing threshold values,
The electric vacuum pump is controlled to close.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710648071.6A CN107380152A (en) | 2017-08-01 | 2017-08-01 | A kind of vacuum boost system and electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710648071.6A CN107380152A (en) | 2017-08-01 | 2017-08-01 | A kind of vacuum boost system and electric automobile |
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| Publication Number | Publication Date |
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| CN107380152A true CN107380152A (en) | 2017-11-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710648071.6A Pending CN107380152A (en) | 2017-08-01 | 2017-08-01 | A kind of vacuum boost system and electric automobile |
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