CN108248589A - A kind of electric motor intelligent brake assist system and its control method - Google Patents
A kind of electric motor intelligent brake assist system and its control method Download PDFInfo
- Publication number
- CN108248589A CN108248589A CN201810177386.1A CN201810177386A CN108248589A CN 108248589 A CN108248589 A CN 108248589A CN 201810177386 A CN201810177386 A CN 201810177386A CN 108248589 A CN108248589 A CN 108248589A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- electric motor
- brake assist
- assist system
- motor intelligent
- 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
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
Abstract
The present invention provides a kind of electric motor intelligent brake assist system, including controller, further includes vacuum booster, vacuum tank, vacuum pump and vacuum transducer；The vacuum booster is connect by the first pipeline with vacuum tank；The vacuum tank is connect by the second pipeline with vacuum pump；The vacuum transducer is mounted on vacuum tank and is connect with controller signals.Ingenious in design, highly reliable the present invention relates to vacuum-control(led) system and its control method needed for a kind of automobile brake, high sensitivity is adaptable；Prior art braking system part is simplified, device, which meets electric vehicle braking system in the case of no vacuum source, there are enough vacuum, so as to reach good braking ability.
Description
Technical field
The present invention relates to a kind of electric motor intelligent brake assist system, more particularly to a kind of brake of electric vehicle is true
Empty control system；Belong to electro-mechanical arts.
Background technology
Braking ability is the important indicator that Hyundai Motor is researched and developed safely in car steering.At present, each enterprise of the industry is passing
Mainly take technology as follows in terms of system vehicle braking ability：A, braking system vacuum tank connects motor intake manifold by pipeline,
Vacuum, which is provided, by manifold carrys out servobrake braking；B, braking system installs electric vacuum pump additional, and vacuum tank installs pressure sensor additional, very
The vacuum signal that empty pump control module is surveyed according to pressure sensor starts Motorized vacuum pump work, generates auxiliary vacuum.Tradition
Internal combustion engine driving automobile has the vacuum source that engine provides, and electric vehicle is without vacuum source.
Invention content
The shortcomings that technical problems to be solved by the invention are, overcome the prior art provides a kind of vehicle drive power system
Vacuum-control(led) system needed for dynamic, its object is to simplify prior art braking system part device, does not have in vehicle drive power
In the case of having vacuum source, occur to carry out brake vacuum assist with control system by increasing a set of vacuum.
In order to solve the above technical problems, the present invention provides a kind of electric motor intelligent brake assist system, including controller,
It is characterized in that：Further include vacuum booster, vacuum tank, vacuum pump and vacuum transducer；The vacuum booster passes through
One pipeline is connect with vacuum tank；The vacuum tank is connect by the second pipeline with vacuum pump；The vacuum transducer is mounted on true
It is connect on slack tank and with controller signals.
The technical characteristic that further limits of the present invention as：Further include the first check valve on the first pipeline.
Further, the second check valve on the second pipeline is further included.
Further, it is also equipped with gas leak detection device on the vacuum tank.
Further, the warning device being connect with controller signals is further included.
Further, the vacuum pump control power supply is 0~14v increment type booster powers.
The invention also discloses a kind of control methods of electric motor intelligent brake assist system, it is characterised in that including following
Several steps：
Firstth, the functional relation between height above sea level and vacuum tank upper and lower limit threshold value is established；Upper limit threshold ranging from -80Kpa
~-85Kpa；Lower threshold ranging from -60Kpa~-65Kpa；
Secondth, electric switch is opened, vacuum transducer measures vacuum tank current pressure values and is transmitted to controller；
Third, controller compare the pressure measuring value received with the upper limit threshold set；
If measured value ＜ upper limit thresholds, open vacuum pump；
If measured value >=upper limit threshold, closes vacuum pump；
4th, braking brake, if pressure measuring value≤lower threshold, opens vacuum pump；
5th, reciprocation cycle first to third walks.
Further, gas leakage detecting step is further included；The pressure value of vacuum tank is continuously detected in 1s~2s time intervals,
If the pressure value variation detected can determine whether pipeline gas leakage higher than upper limit threshold.
Further, leakage alarm step is further included, if there is gas leakage generation, controller control warning device is alarmed
Signal, while increase the time of vacuum pump forced stoppage.
Further, in the 4th step, vacuum pump is opened using the supply voltage being stepped up.
The beneficial effects of the invention are as follows：The present invention provides vacuum-control(led) system and its controlling parties needed for a kind of automobile brake
Method, ingenious in design, highly reliable, high sensitivity is adaptable；Prior art braking system part is simplified, device is met
Electric vehicle braking system in the case of no vacuum source has enough vacuum, so as to reach good braking ability.
Description of the drawings
Fig. 1 is the structure connection diagram of the present invention.
Fig. 2 is the logic control chart of vacuum pump.
Specific embodiment
Embodiment 1
A kind of electric motor intelligent brake assist system provided in this embodiment, as shown in Figure 1：Including controller 1, further include
Vacuum booster 2, vacuum tank 3, vacuum pump 4 and vacuum transducer 5；The vacuum booster passes through the first pipeline 6 and vacuum
Tank connects；The vacuum tank is connect by the second pipeline 7 with vacuum pump；The vacuum transducer be mounted on vacuum tank on and with control
Device signal connection processed.
The invention also includes the first check valve 8 on the first pipeline and second on the second pipeline are unidirectional
Valve 9.Gas leak detection device is also equipped on the vacuum tank, is not shown in the accompanying drawings.
The invention also includes the warning devices being connect with controller signals.The vacuum pump control power supply is incremental for 0~14v
Type booster power.
The invention also discloses a kind of controlling party musical instruments used in a Buddhist or Taoist mass of electric motor intelligent brake assist system, main control principles
For：Vacuum pressure sensor acquires pressure signal to controller, and controller opens or closes vacuum pump by the threshold value of setting.
Mainly include following steps：
Firstth, the functional relation between height above sea level and vacuum tank upper and lower limit threshold value is established；Upper limit threshold ranging from -80Kpa
~-85Kpa；Lower threshold ranging from -60Kpa~-65Kpa；
Secondth, electric switch is opened, vacuum transducer measures vacuum tank current pressure values Vp and is transmitted to controller；
Third, controller compare the pressure measuring value received with the upper limit threshold TPmax set；As shown in Figure 2：
If measured value Vp ＜ upper limit threshold TPmax, open vacuum pump；It is carried out at the same time gas leakage detection；In 1s time intervals
The pressure value of interior continuous detection vacuum tank, if the pressure value variation detected can determine whether pipeline gas leakage higher than upper limit threshold.
If there is gas leakage generation, alarm signal occurs for controller control warning device, while increase the time of vacuum pump forced stoppage.If
Measured value >=upper limit threshold, then close vacuum pump；
4th, braking brake, if pressure measuring value Vp≤lower threshold TPmin, opens vacuum pump；Using being stepped up
Supply voltage open vacuum pump.System mechanical failure caused by normal work suddenly, extends system when can prevent cold-starting
It unites the service life.Vcon is that vacuum pump work enables variable, and=1 represents that vacuum pump work=0 is needed to represent that vacuum pump is needed to shut down.
5th, reciprocation cycle first to third walks.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical solution, all fall within the present invention claims protection domain.
Claims (10)
1. a kind of electric motor intelligent brake assist system, including controller, it is characterised in that：Further include vacuum booster, vacuum
Tank, vacuum pump and vacuum transducer；The vacuum booster is connect by the first pipeline with vacuum tank；The vacuum tank passes through
Second pipeline is connect with vacuum pump；The vacuum transducer is mounted on vacuum tank and is connect with controller signals.
2. electric motor intelligent brake assist system according to claim 1, it is characterised in that：It further includes mounted on the first pipe
First check valve of road.
3. electric motor intelligent brake assist system according to claim 2, it is characterised in that：It further includes mounted on the second pipe
Second check valve of road.
4. according to claim 1-3 any one of them electric motor intelligent brake assist systems, it is characterised in that：The vacuum tank
On be also equipped with gas leak detection device.
5. electric motor intelligent brake assist system according to claim 4, it is characterised in that：It further includes and controller signals
The warning device of connection.
6. electric motor intelligent brake assist system according to claim 5, it is characterised in that：The vacuum pump controls power supply
For 0~14v increment type booster powers.
7. a kind of control method of electric motor intelligent brake assist system, it is characterised in that including following steps：
Firstth, the functional relation between height above sea level and vacuum tank upper and lower limit threshold value is established；Upper limit threshold ranging from -80Kpa~-
85Kpa；Lower threshold ranging from -60Kpa~-65Kpa；
Secondth, electric switch is opened, vacuum transducer measures vacuum tank current pressure values and is transmitted to controller；
Third, controller compare the pressure measuring value received with the upper limit threshold set；
If measured value ＜ upper limit thresholds, open vacuum pump；
If measured value >=upper limit threshold, closes vacuum pump；
4th, braking brake, if pressure measuring value≤lower threshold, opens vacuum pump；
5th, reciprocation cycle first to third walks.
8. the control method of electric motor intelligent brake assist system according to claim 7, it is characterised in that：Further include leakage
Gas detecting step；The pressure value of vacuum tank is continuously detected in 1s~2s time intervals, if the pressure value variation detected is high
In upper limit threshold, then pipeline gas leakage is can determine whether.
9. the control method of electric motor intelligent brake assist system according to claim 8, it is characterised in that：Further include leakage
Gas alarming step, if there is gas leakage generation, alarm signal occurs for controller control warning device, while increases vacuum pump pressure and stop
The time of machine.
10. the control method of electric motor intelligent brake assist system according to claim 9, it is characterised in that：The 4th
In step, vacuum pump is opened using the supply voltage being stepped up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810177386.1A CN108248589A (en) | 2018-03-02 | 2018-03-02 | A kind of electric motor intelligent brake assist system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810177386.1A CN108248589A (en) | 2018-03-02 | 2018-03-02 | A kind of electric motor intelligent brake assist system and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108248589A true CN108248589A (en) | 2018-07-06 |
Family
ID=62745723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810177386.1A Pending CN108248589A (en) | 2018-03-02 | 2018-03-02 | A kind of electric motor intelligent brake assist system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108248589A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112319447A (en) * | 2020-11-05 | 2021-02-05 | 东风柳州汽车有限公司 | Electric automobile vacuum system, control method and vehicle |
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| CN101767581A (en) * | 2008-12-30 | 2010-07-07 | 比亚迪股份有限公司 | Vacuum assisted brake system, control method thereof, and vehicle comprising vacuum assisted brake system |
| CN101791980A (en) * | 2010-02-11 | 2010-08-04 | 中国汽车技术研究中心 | Electric vacuum servo device control strategy of electric car brake |
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| CN202827557U (en) * | 2012-05-15 | 2013-03-27 | 深圳市陆地方舟电动车有限公司 | Electric vehicle power-driven vacuum servobrake control system |
| CN103043049A (en) * | 2012-12-29 | 2013-04-17 | 深圳市陆地方舟电动车有限公司 | Vacuum brake boosting control system and vacuum brake boosting control method for electric cars |
| CN104309603A (en) * | 2014-09-30 | 2015-01-28 | 联合汽车电子有限公司 | Method for diagnosing air leakage of vacuum air suction system for providing vacuum degree of brake system |
| US20150037172A1 (en) * | 2011-07-01 | 2015-02-05 | Jaguar Land Rover Limited | Method of controlling vacuum pump for vehicle brake booster |
| CN105523032A (en) * | 2016-02-26 | 2016-04-27 | 成都雅骏新能源汽车科技股份有限公司 | Electric motorcar vacuum boost control system and control method thereof |
| CN205381264U (en) * | 2016-02-26 | 2016-07-13 | 成都雅骏新能源汽车科技股份有限公司 | Electric motor car vacuum servo control system |
| CN107264502A (en) * | 2017-06-21 | 2017-10-20 | 南京世界村汽车动力有限公司 | Vacuum-control(led) system needed for automobile brake |
| CN207943032U (en) * | 2018-03-02 | 2018-10-09 | 江苏凯龙宝顿动力科技有限公司 | A kind of electric motor intelligent brake assist system |
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2018
- 2018-03-02 CN CN201810177386.1A patent/CN108248589A/en active Pending
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| CN101767581A (en) * | 2008-12-30 | 2010-07-07 | 比亚迪股份有限公司 | Vacuum assisted brake system, control method thereof, and vehicle comprising vacuum assisted brake system |
| CN101791980A (en) * | 2010-02-11 | 2010-08-04 | 中国汽车技术研究中心 | Electric vacuum servo device control strategy of electric car brake |
| US20150037172A1 (en) * | 2011-07-01 | 2015-02-05 | Jaguar Land Rover Limited | Method of controlling vacuum pump for vehicle brake booster |
| CN102673551A (en) * | 2012-05-15 | 2012-09-19 | 深圳市陆地方舟电动车有限公司 | Electric vacuum servo brake control system of pure electric automobile |
| CN202827557U (en) * | 2012-05-15 | 2013-03-27 | 深圳市陆地方舟电动车有限公司 | Electric vehicle power-driven vacuum servobrake control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112319447A (en) * | 2020-11-05 | 2021-02-05 | 东风柳州汽车有限公司 | Electric automobile vacuum system, control method and vehicle |
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Application publication date: 20180706 |