CN107444196A - Electric automobile with vacuum pump control system - Google Patents
Electric automobile with vacuum pump control system Download PDFInfo
- Publication number
- CN107444196A CN107444196A CN201710792450.2A CN201710792450A CN107444196A CN 107444196 A CN107444196 A CN 107444196A CN 201710792450 A CN201710792450 A CN 201710792450A CN 107444196 A CN107444196 A CN 107444196A
- Authority
- CN
- China
- Prior art keywords
- entire car
- car controller
- vacuum
- pressure
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- 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
- B60L7/02—Dynamic electric resistor braking
- B60L7/08—Controlling the braking effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- 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
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- 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
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
-
- 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
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a kind of electric automobile with vacuum pump control system, including entire car controller, vavuum pump, vacuum pressure sensor, ambient pressure sensor, vehicle speed sensor and braking sensor, its control comprises the following steps：Step A, entire car controller carry out the control of motor output torque in recovery braking procedure according to speed and brake pedal switch signal；Step B, according to ambient atmosphere pressure detection signal；Step C, it is determined that the pressure limit that braking is relative, calculates the absolute pressure scope in vacuum system, it is determined whether need to start vacuum pump body；Step D, the opening amount signal and aperture rate of change of brake pedal are gathered, determine that existing vacuum system whether there is gas leakage；Step E, if it is determined that vacuum system has gas leakage, and entire car controller forced brake is to reduce speed simultaneously until vehicle stops, and opens emergency light.The present invention can improve the basic performance of vavuum pump, can improve the insensitivity and reliability of electric automobile during traveling, it is ensured that the driving safety of vehicle, strong applicability and practicality are good.
Description
Technical field
The invention belongs to electric vehicle brake technical field, and in particular to a kind of electronic vapour with vacuum pump control system
Car.
Background technology
In vehicle traveling process, the reliability of brakes is directly connected to the driving safety of automobile.In conventional vehicle
On, auxiliary power-assisted mode of the generally use vacuum booster as brake system of car, the size of vacuum directly affects braking
Effect；On electric automobile, motor substituted for engine, the vacuum source for not being available for booster to use, i.e., can not produce
The effect of raw power-assisted.Vacuum booster now can not provide necessary power-assisted for driver and ensure, and electric vacuum pump passes through biography
The detection of sensor and the judgement of logic, can solve this problem well.The use of electric vacuum pump, it is ensured that power-assisted
Vacuum in device maintains certain level, and good brake efficiency is provided for running car, ensures the security of driving.
Vacuum pump of electric automobile control at present is controlled using vacuum pressure switch or vacuum sensor mostly, can meet electricity substantially
Braking requirement when electrical automobile is run.But there is certain deficiency such as in existing control method：It is urgent during high vehicle speeds
During braking, brake pedal can substantially feel partially hard in the braking distance second half section, brake vacuum degree deficiency.When vehicle in long descending or
When person continuously brakes, brake pedal substantially feels partially hard, brake vacuum deficiency.Vavuum pump control can not be in real time according to vacuum needs
Speed governing operation, waste electric energy.When vehicle is in the low area operation in highlands or atmospheric pressure, vehicle braking relative pressure
Plains region and high altitude localities are different, cause high altitude localities brake pedal feel partially hard, brake force deficiency.
The content of the invention
The purpose of the present invention be it is a kind of improve braking reliability and reduce power consumption there is vacuum pump control system
Electric automobile.
The technical scheme for realizing the object of the invention is a kind of electric automobile with vacuum pump control system, including vehicle control
Device processed, the vavuum pump being connected with the entire car controller, the vacuum pressure sensor being connected with the entire car controller, with
Ambient pressure sensor that the entire car controller is connected, the vehicle speed sensor being connected with the entire car controller and with institute
The braking sensor that entire car controller is connected is stated, its control comprises the following steps：
Step A, entire car controller carry out motor output torque in recovery braking procedure according to speed and brake pedal switch signal
Control；
Step B, entire car controller according to the ambient atmosphere pressure detection signal of ambient pressure sensor, brake required by control in real time
Relative pressure is maintained in a stable scope；
Step C, entire car controller gather GES first, it is determined that the pressure limit that braking is relative, then gathers ambient air
Pressure, calculates the absolute pressure scope in vacuum system, it is determined whether needs to start vacuum pump body；
Step D, entire car controller gathers the opening amount signal and aperture rate of change of brake pedal, in combination with vacuum pressure sensor
Pressure signal and pressure change rate, by carrying out aperture rate of change and pressure value changes are matched and compared, determine existing vacuum
System whether there is gas leakage；
Step E, if it is determined that vacuum system has gas leakage, and entire car controller forced brake is to reduce speed and until vehicle stops
Only, and emergency light is opened.
In step, when speed is in 0-40km/h regions, when VCU detects brake switch signal, controlled motor exports
Negative torque is -20 ~ 40Nm；When speed is in 40-60km/h regions, when VCU detects brake switch signal, controlled motor exports
Negative torque is -40 ~ 60Nm；When speed is in 60-80km/h regions, when VCU detects brake switch signal, controlled motor exports
Negative torque is -60 ~ 80Nm.
In step C, if it is determined that start vavuum pump, now entire car controller gather in real time brake pedal opening amount signal with
It is determined that now whether in brake hard or continuous braking, the speed vacuumized of vavuum pump is improved, adjusts the rotating speed of vavuum pump, such as
Fruit determines not start vavuum pump, but entire car controller collects damped condition when belonging to brake hard or continuously braking, whole
Vehicle controller starts vavuum pump and reaches maximum braking relative pressure with high rotating speed rapid vacuumizing at once.
It is whole when pressure value rate of change and brake pedal aperture rate of change and brake pedal opening value mismatch in step D
Vehicle controller determines that present vacuum system has gas leakage, otherwise in the absence of gas leakage.
The present invention has positive effect：The present invention can improve the basic performance of vavuum pump, while can also improve electronic
The insensitivity and reliability of running car, it is ensured that the driving safety of vehicle, and the power consumption of electric automobile can be reduced,
So as to improve course continuation mileage, strong applicability and practicality is good.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail, wherein：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the rate-determining steps schematic diagram of the present invention.
Embodiment
（Embodiment 1）
Fig. 1 and Fig. 2 shows a kind of embodiment of the present invention, and wherein Fig. 1 is the structural representation of the present invention；Fig. 2 is
The rate-determining steps schematic diagram of the present invention.
See Fig. 1 and Fig. 2, a kind of electric automobile with vacuum pump control system, including entire car controller 1, with it is described whole
Vavuum pump 2 that vehicle controller 1 is connected, the vacuum pressure sensor 3 being connected with the entire car controller 1, with the vehicle
Ambient pressure sensor 4 that controller 1 is connected, the vehicle speed sensor 5 being connected with the entire car controller 1 and with it is described whole
The braking sensor 6 that vehicle controller 1 is connected, its control comprise the following steps：
Step A, entire car controller carry out motor output torque in recovery braking procedure according to speed and brake pedal switch signal
Control；
Step B, entire car controller according to the ambient atmosphere pressure detection signal of ambient pressure sensor, brake required by control in real time
Relative pressure is maintained in a stable scope；
Step C, entire car controller gather GES first, it is determined that the pressure limit that braking is relative, then gathers ambient air
Pressure, calculates the absolute pressure scope in vacuum system, it is determined whether needs to start vacuum pump body；
Step D, entire car controller gathers the opening amount signal and aperture rate of change of brake pedal, in combination with vacuum pressure sensor
Pressure signal and pressure change rate, by carrying out aperture rate of change and pressure value changes are matched and compared, determine existing vacuum
System whether there is gas leakage；
Step E, if it is determined that vacuum system has gas leakage, and entire car controller forced brake is to reduce speed and until vehicle stops
Only, and emergency light is opened.
In step, when speed is in 0-40km/h regions, when VCU detects brake switch signal, controlled motor exports
Negative torque is -20 ~ 40Nm；When speed is in 40-60km/h regions, when VCU detects brake switch signal, controlled motor exports
Negative torque is -40 ~ 60Nm；When speed is in 60-80km/h regions, when VCU detects brake switch signal, controlled motor exports
Negative torque is -60 ~ 80Nm.
In step C, if it is determined that start vavuum pump, now entire car controller gather in real time brake pedal opening amount signal with
It is determined that now whether in brake hard or continuous braking, the speed vacuumized of vavuum pump is improved, adjusts the rotating speed of vavuum pump, such as
Fruit determines not start vavuum pump, but entire car controller collects damped condition when belonging to brake hard or continuously braking, whole
Vehicle controller starts vavuum pump and reaches maximum braking relative pressure with high rotating speed rapid vacuumizing at once.
It is whole when pressure value rate of change and brake pedal aperture rate of change and brake pedal opening value mismatch in step D
Vehicle controller determines that present vacuum system has gas leakage, otherwise in the absence of gas leakage.
The present invention can improve the basic performance of vavuum pump, at the same can also improve electric automobile during traveling insensitivity and
Reliability, it is ensured that the driving safety of vehicle, and the power consumption of electric automobile can be reduced, so as to improve course continuation mileage, it is applicable
The strong and practicality of property is good.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And these
The obvious changes or variations that the connotation for belonging to of the invention is extended out still falls within protection scope of the present invention.
Claims (4)
1. a kind of electric automobile with vacuum pump control system, including entire car controller, it is connected with the entire car controller
Vavuum pump, the vacuum pressure sensor, the environment that is connected with the entire car controller that are connected with the entire car controller
Pressure sensor, the vehicle speed sensor being connected with the entire car controller and the braking biography being connected with the entire car controller
Sensor, it is characterised in that：Its control comprises the following steps：
Step A, entire car controller carry out motor output torque in recovery braking procedure according to speed and brake pedal switch signal
Control；
Step B, entire car controller according to the ambient atmosphere pressure detection signal of ambient pressure sensor, brake required by control in real time
Relative pressure is maintained in a stable scope；
Step C, entire car controller gather GES first, it is determined that the pressure limit that braking is relative, then gathers ambient air
Pressure, calculates the absolute pressure scope in vacuum system, it is determined whether needs to start vacuum pump body；
Step D, entire car controller gathers the opening amount signal and aperture rate of change of brake pedal, in combination with vacuum pressure sensor
Pressure signal and pressure change rate, by carrying out aperture rate of change and pressure value changes are matched and compared, determine existing vacuum
System whether there is gas leakage；
Step E, if it is determined that vacuum system has gas leakage, and entire car controller forced brake is to reduce speed and until vehicle stops
Only, and emergency light is opened.
2. the electric automobile according to claim 1 with vacuum pump control system, it is characterised in that：In step, when
Speed is in 0-40km/h regions, and when VCU detects brake switch signal, controlled motor output negative torque is -20 ~ 40Nm；When
Speed is in 40-60km/h regions, and when VCU detects brake switch signal, controlled motor output negative torque is -40 ~ 60Nm；When
Speed is in 60-80km/h regions, and when VCU detects brake switch signal, controlled motor output negative torque is -60 ~ 80Nm.
3. the electric automobile according to claim 2 with vacuum pump control system, it is characterised in that：In step C, such as
Fruit determines startup vavuum pump, and now entire car controller gathers brake pedal opening amount signal to determine now whether promptly making in real time
Dynamic or continuous braking, the speed vacuumized of vavuum pump is improved, adjust the rotating speed of vavuum pump, if it is determined that do not start vavuum pump,
But entire car controller collects damped condition when belonging to brake hard or continuously braking, entire car controller starts vacuum at once
Pump reaches maximum braking relative pressure with high rotating speed rapid vacuumizing.
4. the electric automobile according to claim 3 with vacuum pump control system, it is characterised in that：In step D, work as pressure
When force value rate of change and brake pedal aperture rate of change and brake pedal opening value mismatch, entire car controller determines present vacuum
There is gas leakage in system, otherwise in the absence of gas leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710792450.2A CN107444196A (en) | 2017-09-05 | 2017-09-05 | Electric automobile with vacuum pump control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710792450.2A CN107444196A (en) | 2017-09-05 | 2017-09-05 | Electric automobile with vacuum pump control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107444196A true CN107444196A (en) | 2017-12-08 |
Family
ID=60495918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710792450.2A Pending CN107444196A (en) | 2017-09-05 | 2017-09-05 | Electric automobile with vacuum pump control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107444196A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674483A (en) * | 2018-04-28 | 2018-10-19 | 东风商用车有限公司 | A kind of electric hydraulic power-assisted steering braking system and its control method |
| CN108973962A (en) * | 2018-07-23 | 2018-12-11 | 四川江淮汽车有限公司 | A kind of electric vehicle brake vacuum pump startup control method |
| CN108973963A (en) * | 2018-07-23 | 2018-12-11 | 四川江淮汽车有限公司 | A kind of the Motorized vacuum pump control system and method for electric car |
| CN110466491A (en) * | 2018-05-09 | 2019-11-19 | 郑州宇通重工有限公司 | A kind of control system and method for vehicle electric vacuum pump |
| CN110884477A (en) * | 2018-09-07 | 2020-03-17 | 宝沃汽车（中国）有限公司 | Vacuum system fault detection method and device |
| CN110979288A (en) * | 2019-12-27 | 2020-04-10 | 郑州日产汽车有限公司 | Pure electric vehicle intelligent vacuum pump control system and method based on whole vehicle CAN architecture |
| CN111497810A (en) * | 2020-04-19 | 2020-08-07 | 东风汽车集团有限公司 | Control system and control method for brake vacuum pump of electric automobile |
| CN112519738A (en) * | 2019-09-18 | 2021-03-19 | 广州汽车集团股份有限公司 | Vacuum-assisted brake system, brake control method, and brake control apparatus |
| CN112677944A (en) * | 2021-01-07 | 2021-04-20 | 大运汽车股份有限公司 | Electronic vacuum pump control system suitable for high altitude |
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| US20050178622A1 (en) * | 2004-02-18 | 2005-08-18 | Scott Blue | Altitude compensating trailer brake system |
| CN201816579U (en) * | 2010-09-25 | 2011-05-04 | 阿尔特(中国)汽车技术有限公司 | Brake assist system for electric automobile |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674483A (en) * | 2018-04-28 | 2018-10-19 | 东风商用车有限公司 | A kind of electric hydraulic power-assisted steering braking system and its control method |
| CN108674483B (en) * | 2018-04-28 | 2023-05-12 | 东风商用车有限公司 | Control method of electro-hydraulic power-assisted steering braking system |
| CN110466491A (en) * | 2018-05-09 | 2019-11-19 | 郑州宇通重工有限公司 | A kind of control system and method for vehicle electric vacuum pump |
| CN108973962A (en) * | 2018-07-23 | 2018-12-11 | 四川江淮汽车有限公司 | A kind of electric vehicle brake vacuum pump startup control method |
| CN108973963A (en) * | 2018-07-23 | 2018-12-11 | 四川江淮汽车有限公司 | A kind of the Motorized vacuum pump control system and method for electric car |
| CN110884477A (en) * | 2018-09-07 | 2020-03-17 | 宝沃汽车（中国）有限公司 | Vacuum system fault detection method and device |
| CN110884477B (en) * | 2018-09-07 | 2021-07-20 | 宝沃汽车（中国）有限公司 | Vacuum system fault detection method and device |
| CN112519738A (en) * | 2019-09-18 | 2021-03-19 | 广州汽车集团股份有限公司 | Vacuum-assisted brake system, brake control method, and brake control apparatus |
| CN112519738B (en) * | 2019-09-18 | 2022-04-26 | 广州汽车集团股份有限公司 | Vacuum-assisted brake system, brake control method, and brake control apparatus |
| CN110979288A (en) * | 2019-12-27 | 2020-04-10 | 郑州日产汽车有限公司 | Pure electric vehicle intelligent vacuum pump control system and method based on whole vehicle CAN architecture |
| CN111497810A (en) * | 2020-04-19 | 2020-08-07 | 东风汽车集团有限公司 | Control system and control method for brake vacuum pump of electric automobile |
| CN112677944A (en) * | 2021-01-07 | 2021-04-20 | 大运汽车股份有限公司 | Electronic vacuum pump control system suitable for high altitude |
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