CN103863291A - Vacuum pump control system and control method for electric automobile - Google Patents
Vacuum pump control system and control method for electric automobile Download PDFInfo
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- CN103863291A CN103863291A CN201310751938.2A CN201310751938A CN103863291A CN 103863291 A CN103863291 A CN 103863291A CN 201310751938 A CN201310751938 A CN 201310751938A CN 103863291 A CN103863291 A CN 103863291A
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Abstract
The invention provides a vacuum pump control system for an electric automobile. The vacuum pump control system comprises a vacuum pump controller, and a vacuum pump, a pressure sensor, a brake switch, an instrument display and a vehicle control unit which are electrically connected with the vacuum pump controller respectively, wherein the pressure sensor is arranged at an air outlet of a vacuum air tank and is used for detecting air pressure in the vacuum air tank; the brake switch is connected with a brake pedal, and is switched on to transmit a brake signal to the vacuum pump controller; the instrument display is used for outputting a fault signal transmitted by the vacuum pump controller; the vehicle control unit is used for regulating the running condition of the electric automobile according to the pressure condition of the vacuum pump under the control of the vacuum pump controller. The invention also provides a vacuum pump control method for an electric automobile.
Description
Technical field
The present invention relates to automotive control system and control method, refer to especially a kind of electronlmobil vacuum pump control system and control method.
Background technology
Along with the enhancing gradually of environmental consciousness, nowadays fuel orthodox car is replaced by novel electric vehicle gradually.Traditional electronlmobil vacuum brake force aid system is made up of pressure switch, controller for vacuum pump and vacuum pump, this system does not have real-time control and dependent failure diagnosis function, as: gas leakage, the fault such as motor is bad, sensor is bad, cause automobile driver in stroke can not monitor in real time vacuum brake control system situation, and there is disadvantageous thing, be unfavorable for like this development and the popularization of electronlmobil.So in order to reach this object, we develop a kind of electronlmobil vacuum brake assisted control system and control method, can allow driver can monitor in real time vacuum brake control system situation, so that safety brake in time.
Summary of the invention
The invention provides a kind of electronlmobil vacuum pump control system, it comprises: controller for vacuum pump and the vacuum pump, pressure sensor, BK Brake Switch, instrument display, the entire car controller that are electrically connected with it respectively, wherein, pressure sensor is located at the air extractor duct of vacuum gas tank, for detection of the gaseous tension in vacuum gas tank, BK Brake Switch is connected with brake pedal, and BK Brake Switch is opened, to controller for vacuum pump transmission brake signal; Instrument display, the breakdown signal transmitting for exporting controller for vacuum pump; Entire car controller, under the control of controller for vacuum pump, according to the pressure condition of vacuum pump, adjusts the operation conditions of electronlmobil.
Preferably, described vacuum pump control system further comprises vacuum booster, and it is arranged between vacuum gas tank and brake pedal, be communicated with vacuum gas tank by extraction pipe, while stepping on brake pedal, BK Brake Switch is connected, and drives vacuum booster to vacuumize to vacuum gas tank.
The present invention also provides a kind of control method of electronlmobil vacuum pump control system, and it comprises the following steps:
Step 1) starts controller for vacuum pump, and brake control system is carried out to self check;
Step 2) controller for vacuum pump starts vacuum pressure sensor the pressure in vacuum gas tank detected, and in the time that the pressure of vacuum gas tank is less than low pressure limit value, starts vacuum pump work; Maybe ought step on brake pedal, start BK Brake Switch, in the time that controller for vacuum pump is received described brake signal, start vacuum pump work;
Step 3) vacuum pump vacuumizes vacuum gas tank, in setting-up time, if when the current pressure of vacuum gas tank is greater than upper pressure limit value, vacuumize complete, drive vacuum pump quit work;
If when the current pressure of vacuum gas tank is less than low pressure limit value, drive electronlmobil to stop travelling.
Wherein, described setting-up time is 20 seconds, and the low pressure limit value of described vacuum gas tank is 40KPa, and upper pressure limit value is 65KPa.
Preferably, in step 3), in setting-up time, if the current pressure of vacuum gas tank between low pressure limit value and upper pressure limit value time, drives the work of vacuum pump intermittence.Vacuum pump, in the time of intermittence mode of operation, is worked 20 seconds, stops 10 seconds.
Preferably, if when the current pressure of vacuum gas tank is less than low pressure limit value, send breakdown signal to entire car controller and instrument display, entire car controller stops travelling according to breakdown signal control electronlmobil, and instrument display shows failure message.
Compared with prior art, electronlmobil vacuum pump control system of the present invention, by gaseous tension in vacuum gas tank is detected in real time, judge within certain detection time, current vacuum pressure and low pressure limit value and the comparison of low pressure limit value, to adjust its mode of operation, if when vacuum gas tank cannot reach low pressure limit value, report to the police to entire car controller, and driving stops travelling, automatically control its mode of operation, greatly improve the self check safety of electronlmobil, ensure that it travels under safe condition, the gentle safety of travelling of Automated water of parking Control of Electric Vehicles.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of a kind of electronlmobil vacuum pump of the present invention control system;
Fig. 2 is the structural representation of a kind of electronlmobil vacuum pump of the present invention control system;
Fig. 3 is the diagram of circuit of a kind of electronlmobil vacuum pump of the present invention control method.
The specific embodiment
Shown in seeing figures.1.and.2, the invention provides a kind of electronlmobil vacuum pump control system, it comprises: controller for vacuum pump 1 and the vacuum pump 2 being electrically connected with it respectively, pressure sensor 3, BK Brake Switch 4, instrument display 5, entire car controller 6 and power supply 11, wherein, pressure sensor 3 is located at the air extractor duct of vacuum gas tank 7, for detection of the gaseous tension in vacuum gas tank 7, BK Brake Switch 4 is connected with brake pedal 8, BK Brake Switch is opened, and transmits brake signal to controller for vacuum pump 1; Instrument display 5, the breakdown signal transmitting for exporting controller for vacuum pump 1; Entire car controller 6, under the control of controller for vacuum pump 1, according to the pressure condition of vacuum pump 2, adjusts the operation conditions of electronlmobil.
Shown in Fig. 2, controller for vacuum pump 1 is for controlling the mode of operation of vacuum pump 2 according to the atmospheric pressure state of vacuum pump 2.Vacuum pump 2 is electrically connected with controller for vacuum pump 1, is communicated with vacuum gas tank 7 with extraction pipe, vacuumizes to vacuum gas tank 7.Pressure sensor 3 arranges the air extractor duct end with vacuum gas tank 7, and it is electrically connected with controller for vacuum pump 1, so that the vacuum pump atmospheric pressure value of being measured is transferred in controller for vacuum pump 1 and to be compared.
In a preferred embodiment of the invention, described vacuum pump control system further comprises vacuum booster 9, and it is arranged between vacuum gas tank 7 and brake pedal 8, and one end is communicated with vacuum gas tank 7 by extraction pipe, and one end and brake pedal 8 join.In the time stepping on brake pedal 8, BK Brake Switch 4 is connected, and brake pedal 8 promotes the cylinder compression of vacuum booster 9, drives vacuum booster 9 to vacuumize to vacuum gas tank 7.Described vacuum booster 9 is connected with brake pipe 10.
The operating voltage of described electronlmobil vacuum pump control system is 12V, when institute's system voltage is less than 9V, processes by large gas leakage, and feedback breakdown signal is to entire car controller and instrument display.
Shown in Fig. 3, the present invention also provides the control method of electronlmobil vacuum pump control system, comprises the following steps:
Step 1) starts controller for vacuum pump, and brake control system is carried out to self check;
Step 2) controller for vacuum pump starts vacuum pressure sensor the pressure in vacuum gas tank detected, and in the time that the pressure of vacuum gas tank is less than low pressure limit value, starts vacuum pump work; Maybe ought step on brake pedal, start BK Brake Switch, in the time that controller for vacuum pump is received described brake signal, start vacuum pump work;
Step 3) vacuum pump vacuumizes vacuum gas tank, in setting-up time, if when the current pressure of vacuum gas tank is greater than upper pressure limit value, vacuumize complete, drive vacuum pump quit work;
If when the current pressure of vacuum gas tank is less than low pressure limit value, drive electronlmobil to stop travelling.
First, start vacuum pump control system and carry out self check, if system is normal, the pressure in vacuum gas tank is detected, if the system failure, to entire car controller 6 reporting fault information, is reported to the police, and transfer to instrument display 5 and export failure message.Next, measure through pressure sensor 3, if when the air pressure in vacuum gas tank 7 is greater than low pressure limit value 40KPa, the pressure state in vacuum gas tank 7 meets setting requirement, and vacuum pump 2 is not worked, and need not vacuumize vacuum gas tank 7; If when the air pressure in vacuum gas tank 7 is less than low pressure limit value 40KPa, starts vacuum pump 2 vacuum gas tank 7 is vacuumized.In addition, if controller for vacuum pump 1 receives brake signal, brake pedal 8 also can promote vacuum booster 9 compression work, no matter the pressure in vacuum gas tank is how many, all drives vacuum booster 9 to vacuumize vacuum gas tank 7.In the present embodiment, setting-up time is 20 seconds, if in 20 seconds, when the air pressure in vacuum gas tank reaches upper pressure limit value 65KPa, vacuum pump quits work; If in 20 seconds, the current pressure of vacuum gas tank is between low pressure limit value 40KPa and upper pressure limit value 65KPa time, drive the work of vacuum pump intermittence, vacuum pump, in the time of intermittence mode of operation, is worked 20 seconds, stops 10 seconds, at this moment, vacuum gas tank is little gas leakage state, sends breakdown signal to entire car controller and instrument display by controller for vacuum pump, shows failure message; If in 20 seconds, when the current pressure of vacuum gas tank is still less than low pressure limit value 40KPa, at this moment, vacuum gas tank is large gas leakage state, and controller for vacuum pump sends breakdown signal to entire car controller, drives it to control vehicle stop and travels.Vaccum pump motor adopts the control of PMW mode of speed control, and start dutycycle is 100%, shuts down to adopt and stops slowly, in 2 seconds, progressively decays to 0% by PWM.
Claims (10)
1. an electronlmobil vacuum pump control system, it is characterized in that comprising: controller for vacuum pump and the vacuum pump, pressure sensor, BK Brake Switch, instrument display, the entire car controller that are electrically connected with it respectively, wherein, pressure sensor is located at the air extractor duct of vacuum gas tank, for detection of the gaseous tension in vacuum gas tank, BK Brake Switch is connected with brake pedal, and BK Brake Switch is opened, to controller for vacuum pump transmission brake signal; Instrument display, the breakdown signal transmitting for exporting controller for vacuum pump; Entire car controller, under the control of controller for vacuum pump, according to the pressure condition of vacuum pump, adjusts the operation conditions of electronlmobil.
2. electronlmobil vacuum pump control system according to claim 1, it is characterized in that: described vacuum pump control system further comprises vacuum booster, it is arranged between vacuum gas tank and brake pedal, be communicated with vacuum gas tank by extraction pipe, while stepping on brake pedal, BK Brake Switch is connected, and drives vacuum booster to vacuumize to vacuum gas tank.
3. the electronlmobil vacuum pump control system of stating according to claim 2, is characterized in that: described vacuum booster is further communicated with brake pipe.
4. a control method for electronlmobil vacuum pump control system, is characterized in that comprising the following steps:
Step 1) starts controller for vacuum pump, and brake control system is carried out to self check;
Step 2) controller for vacuum pump start vacuum pressure sensor the pressure in vacuum gas tank is detected,
In the time that the pressure of vacuum gas tank is less than low pressure limit value, start vacuum pump work;
Maybe ought step on brake pedal, start BK Brake Switch, in the time that controller for vacuum pump is received described brake signal, start vacuum pump work;
Step 3) vacuum pump vacuumizes vacuum gas tank, in setting-up time, if when the current pressure of vacuum gas tank is greater than upper pressure limit value, vacuumize complete, drive vacuum pump quit work; If when the current pressure of vacuum gas tank is less than low pressure limit value, drive electronlmobil to stop travelling.
5. the control method of electronlmobil controller for vacuum pump according to claim 4, it is characterized in that: in step 3), in setting-up time, if the current pressure of vacuum gas tank between low pressure limit value and upper pressure limit value time, drives the work of vacuum pump intermittence.
6. the control method of electronlmobil controller for vacuum pump according to claim 5, is characterized in that: described setting-up time is 20 seconds.
According to claim 4 ?the control method of the electronlmobil controller for vacuum pump described in any one in 6, it is characterized in that: the low pressure limit value of described vacuum gas tank is 40KPa, upper pressure limit value is 65KPa.
8. the control method of electronlmobil controller for vacuum pump according to claim 4, it is characterized in that: if when the current pressure of vacuum gas tank is less than low pressure limit value, send breakdown signal to entire car controller and instrument display, entire car controller stops travelling according to breakdown signal control electronlmobil, and instrument display shows failure message.
9. the control method of electronlmobil controller for vacuum pump according to claim 5, is characterized in that: vacuum pump, in the time of intermittence mode of operation, is worked 20 seconds, stops 10 seconds.
10. the control method of electronlmobil controller for vacuum pump according to claim 4, is characterized in that: vacuum pump adopts the control of PMW mode of speed control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310751938.2A CN103863291A (en) | 2013-12-31 | 2013-12-31 | Vacuum pump control system and control method for electric automobile |
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| CN201310751938.2A CN103863291A (en) | 2013-12-31 | 2013-12-31 | Vacuum pump control system and control method for electric automobile |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527626A (en) * | 2015-01-22 | 2015-04-22 | 北京市进联国玉制动泵有限责任公司 | Control system and vacuumizing system of electric vacuum pump |
| CN105353691A (en) * | 2015-12-07 | 2016-02-24 | 北京新能源汽车股份有限公司 | Control circuit, control method and device for electric vacuum pump of electric automobile |
| 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 |
| CN105946835A (en) * | 2016-06-27 | 2016-09-21 | 成都雅骏新能源汽车科技股份有限公司 | Electric vacuum pump controller and control method applicable to pure electric vehicle |
| CN106240546A (en) * | 2016-08-15 | 2016-12-21 | 金龙联合汽车工业（苏州）有限公司 | A kind of vacuum boost system for pure electric automobile hydraulic braking |
| CN107628015A (en) * | 2017-08-14 | 2018-01-26 | 芜湖奇点新能源科技有限公司 | The electric vacuum pump of automobile system of Redundant Control |
| CN108238034A (en) * | 2018-01-10 | 2018-07-03 | 北京汽车股份有限公司 | Brake control method and device |
| CN108437966A (en) * | 2018-02-01 | 2018-08-24 | 阿尔特汽车技术股份有限公司 | A kind of vacuum pump of electric automobile method for testing performance based on entire car controller |
| CN108437967A (en) * | 2018-02-01 | 2018-08-24 | 阿尔特汽车技术股份有限公司 | A kind of vacuum pump of electric automobile method for testing performance based on off-line test equipment |
| CN108897269A (en) * | 2018-07-09 | 2018-11-27 | 西北工业大学 | Electrical Break System of Aircraft pressure sensor fault tolerant control method |
| CN110654360A (en) * | 2018-06-28 | 2020-01-07 | 长城汽车股份有限公司 | Electronic vacuum pump control method, device, system and machine readable storage medium |
| CN110936944A (en) * | 2019-09-29 | 2020-03-31 | 浙江合众新能源汽车有限公司 | Electric vehicle vacuum pump signal diagnosis method and system |
-
2013
- 2013-12-31 CN CN201310751938.2A patent/CN103863291A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527626B (en) * | 2015-01-22 | 2017-11-07 | 北京市进联国玉制动泵有限责任公司 | The control system and pumped vacuum systems of electric vacuum pump |
| CN104527626A (en) * | 2015-01-22 | 2015-04-22 | 北京市进联国玉制动泵有限责任公司 | Control system and vacuumizing system of electric vacuum pump |
| CN105353691B (en) * | 2015-12-07 | 2018-05-25 | 北京新能源汽车股份有限公司 | Control circuit, control method and device for electric vacuum pump of electric automobile |
| CN105353691A (en) * | 2015-12-07 | 2016-02-24 | 北京新能源汽车股份有限公司 | Control circuit, control method and device for electric vacuum pump of electric automobile |
| 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 |
| CN105946835A (en) * | 2016-06-27 | 2016-09-21 | 成都雅骏新能源汽车科技股份有限公司 | Electric vacuum pump controller and control method applicable to pure electric vehicle |
| CN106240546A (en) * | 2016-08-15 | 2016-12-21 | 金龙联合汽车工业（苏州）有限公司 | A kind of vacuum boost system for pure electric automobile hydraulic braking |
| CN107628015A (en) * | 2017-08-14 | 2018-01-26 | 芜湖奇点新能源科技有限公司 | The electric vacuum pump of automobile system of Redundant Control |
| CN108238034A (en) * | 2018-01-10 | 2018-07-03 | 北京汽车股份有限公司 | Brake control method and device |
| CN108238034B (en) * | 2018-01-10 | 2020-01-17 | 北京汽车股份有限公司 | Brake control method and device |
| CN108437966A (en) * | 2018-02-01 | 2018-08-24 | 阿尔特汽车技术股份有限公司 | A kind of vacuum pump of electric automobile method for testing performance based on entire car controller |
| CN108437967A (en) * | 2018-02-01 | 2018-08-24 | 阿尔特汽车技术股份有限公司 | A kind of vacuum pump of electric automobile method for testing performance based on off-line test equipment |
| CN110654360A (en) * | 2018-06-28 | 2020-01-07 | 长城汽车股份有限公司 | Electronic vacuum pump control method, device, system and machine readable storage medium |
| CN108897269A (en) * | 2018-07-09 | 2018-11-27 | 西北工业大学 | Electrical Break System of Aircraft pressure sensor fault tolerant control method |
| CN110936944A (en) * | 2019-09-29 | 2020-03-31 | 浙江合众新能源汽车有限公司 | Electric vehicle vacuum pump signal diagnosis method and system |
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Application publication date: 20140618 |