CN102673551A - Electric vacuum servo brake control system of pure electric automobile - Google Patents
Electric vacuum servo brake control system of pure electric automobile Download PDFInfo
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- CN102673551A CN102673551A CN2012101488441A CN201210148844A CN102673551A CN 102673551 A CN102673551 A CN 102673551A CN 2012101488441 A CN2012101488441 A CN 2012101488441A CN 201210148844 A CN201210148844 A CN 201210148844A CN 102673551 A CN102673551 A CN 102673551A
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- 239000012530 fluid Substances 0.000 claims description 13
- 230000000052 comparative effect Effects 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention relates to an electric vacuum servo brake control system of a pure electric automobile. The electric vacuum servo brake control system comprises a vacuum pump, a vacuum gas storage tank, a booster main cylinder assembly, a braking pedal, a brake oil path, an oil storage tank, a pressure sensor and a vacuum servo brake control device, wherein the pressure sensor is located on the vacuum gas storage tank; a connecting rod mechanism is formed by the booster main cylinder assembly and the braking pedal; the booster main cylinder assembly is communicated with the vacuum gas storage tank through a vacuum pipeline; the vacuum gas storage tank is communicated with the vacuum pump through the vacuum pipeline; and the vacuum servo brake control device is electrically connected with the vacuum pump and the pressure sensor to control the opening and the closing of the vacuum pump. According to the invention, a brake servo control device is used for controlling the opening and the closing of the vacuum pump, so as to guarantee a vacuum pressure of the vacuum gas storage tank in a brake vacuum servo control system, effectively guarantee the flexibility and the reliability of a brake vacuum servo device of the pure electric automobile, and guarantee the driving safety to the greatest extent.
Description
Technical field
The present invention relates to automobile brake system, particularly the special-purpose brake vacuum assist control system of pure electric automobile.
Technical background
The use that present automobile all is furnished with brake power-assisted, especially braking vacuum booster device basically is very universal.Its principle is that the negative pressure and the pressure reduction between the barometric pressure that produce when utilizing engine operation force the interior rubber diaphragm of the scarce assembly of brake servo-unit master to move, and promotes the piston of master brake cylinder, alleviates dynamics and the reliability that the people steps on brake pedal with this.
Traditional fuel-engined vehicle mainly rotates constantly through Engine Mechanical and vacuumizes, and to guarantee to have certain brake power-assisted, operating mode is relatively sensitiveer.And in the present pure electric automobile, driving engine is being replaced by electrical motor, and electrical motor can not rotate as driving engine always, and therefore the effect of brake can not show a candle to traditional fuel-engined vehicle, for vehicle performance and traffic safety very big restriction and hidden danger is arranged all.
Summary of the invention
The present invention provides a kind of safe and reliable pure electric automobile electric vacuum booster brake control system, guarantees the sensitivity and the reliability of pure electric automobile brake, guarantees the traffic safety of pure electric automobile to greatest extent.
Technical scheme of the present invention is specially:
Said pure electric automobile electric vacuum booster brake control system comprises: vacuum pump, vacuum gas tank, servo-unit master cylinder assembly, brake pedal, brake fluid line, storage tanker, pressure sensor, vacuum servo braking control device.
Described pressure sensor is positioned on the vacuum gas tank, is used for detecting the vacuum pressure value size of vacuum gas tank and feeding back to the vacuum servo controller;
Said servo-unit master cylinder assembly and brake pedal form connecting rod mechanism, be used to the brake pedal braking power-assisted is provided;
Said servo-unit master cylinder assembly is communicated with through vacuum line with the vacuum gas tank;
Said vacuum gas tank is communicated with through vacuum line with vacuum pump;
Described vacuum servo braking control device is electrically connected with described vacuum pump and pressure sensor; Be used to receive the electric signal of the detected vacuum pressure value size of pressure sensor on the vacuum gas tank; And this electric signal is handled back output control signal give vacuum pump, with the open and close of control vacuum pump;
Fluid in the said servo-unit master cylinder assembly bonded assembly storage tanker flows to the wheel cylinder via brake fluid line, to carry out drag;
Further said vacuum servo braking control device comprises:
Power supply protection and filtration module are used for power supply is carried out reverse connecting protection and carries out filtering;
Signal receiving module is used to receive the electric signal of the vacuum pressure value of said pressure sensor feedback;
The threshold voltage module is used to set the threshold voltage that the electric signal with pressure sensor feedback vacuum pressure value compares;
Voltage comparison module is used for the threshold voltage that the received electric signal of signal receiving module and threshold voltage module set is compared, and comparative result is exported to signal output module;
Signal output module is used for the comparative result of said voltage comparison module output is exported to vacuum pump and according to the open and close of comparative result control vacuum pump.
Further said threshold voltage can be revised setting.
Further said threshold voltage is set at the half the of power line voltage.
Further said brake vacuum assist controller also comprises the time delay circuit module, carries out time-delay closing when being used for signal output module control voltage closed.
The further said time-delay closing time is 15 seconds.
The working process of this pure electric automobile electric vacuum booster brake control system is: this pure electric automobile electric vacuum booster brake control system is formed main control loop with vacuum servo controller 8 and pressure sensor 7; Power on brake vacuum assist controller 8 of system detects the electric signal that receives pressure sensors 7 atmospheric pressure values size; If vacuum pressure does not reach setting value in the vacuum gas tank 2; Pressure sensor 7 output low levels, brake vacuum assist controller 8 detects low level, and brake vacuum assist controller 8 will be controlled vacuum pump 1 and open; If vacuum pressure is to reach setting value in the vacuum gas tank 2; Pressure sensor 7 output high level, brake vacuum assist controller 8 detects high level, and brake vacuum assist controller 8 will control the 1 delay working regular hour of vacuum pump and just cut out; To guarantee that vacuum pressure is enough in the vacuum gas tank 2, guarantee pure electric automobile brake vacuum assist control system normal operation.
Beneficial effect of the present invention is: employing brake power assist controller is controlled the startup of vacuum pump and is closed; Guarantee the vacuum pressure of vacuum gas tank in the brake vacuum assist control system with this; Effectively guarantee the sensitivity and the reliability of pure electric automobile braking vacuum booster device, guaranteed traffic safety to greatest extent.
Description of drawings
Fig. 1 is a pure electric automobile electric vacuum booster brake control system structural representation;
Fig. 2 is a pure electric automobile vacuum servo braking control device principle schematic.
Among the figure: 1, vacuum pump 2, vacuum gas tank 3, servo-unit master cylinder assembly 4, brake pedal
5, brake fluid line 6, storage tanker 7, pressure sensor 8, brake vacuum assist device
It is anodal that P1 connects the 12V power supply, and P2 connects pressure sensor, and P3 connects 12V power supply negative pole, and P4 connects vacuum pump.
The specific embodiment
The present invention provides a kind of safe and reliable pure electric automobile electric vacuum booster brake control system, guarantees the sensitivity and the reliability of pure electric automobile brake, guarantees the traffic safety of pure electric automobile to greatest extent.
Technical scheme of the present invention is specially:
Said pure electric automobile electric vacuum booster brake control system comprises: vacuum pump, vacuum gas tank, servo-unit master cylinder assembly, brake pedal, brake fluid line, storage tanker, pressure sensor, vacuum servo braking control device.
Described pressure sensor is positioned on the vacuum gas tank, is used for detecting the vacuum pressure value size of vacuum gas tank and feeding back to the vacuum servo controller;
Said servo-unit master cylinder assembly and brake pedal form connecting rod mechanism, be used to the brake pedal braking power-assisted is provided;
Said servo-unit master cylinder assembly is communicated with through vacuum line with the vacuum gas tank;
Said vacuum gas tank is communicated with through vacuum line with vacuum pump;
Described vacuum servo braking control device is electrically connected with described vacuum pump and pressure sensor; Be used to receive the electric signal of the detected vacuum pressure value size of pressure sensor on the vacuum gas tank; And this electric signal is handled back output control signal give vacuum pump, with the open and close of control vacuum pump;
Fluid in the said servo-unit master cylinder assembly bonded assembly storage tanker flows to the wheel cylinder via brake fluid line, to carry out drag;
Further said vacuum servo braking control device comprises:
Power supply protection and filtration module are used for power supply is carried out reverse connecting protection and carries out filtering;
Signal receiving module is used to receive the electric signal of the vacuum pressure value of said pressure sensor feedback;
The threshold voltage module is used to set the threshold voltage that the electric signal with pressure sensor feedback vacuum pressure value compares;
Voltage comparison module is used for the threshold voltage that the received electric signal of signal receiving module and threshold voltage module set is compared, and comparative result is exported to signal output module;
Signal output module is used for the comparative result of said voltage comparison module output is exported to vacuum pump and according to the open and close of comparative result control vacuum pump.
Further said threshold voltage can be revised setting.
Further said threshold voltage is set at the half the of power line voltage.
Further said brake vacuum assist controller also comprises the time delay circuit module, carries out time-delay closing when being used for signal output module control voltage closed.
The working process of this pure electric automobile electric vacuum booster brake control system is: this pure electric automobile electric vacuum booster brake control system is formed main control loop with brake vacuum assist control setup 8 and pressure sensor 7; Power on brake vacuum assist controller 8 of system detects the electric signal that receives pressure sensors 7 atmospheric pressure values size; If vacuum pressure does not reach setting value in the vacuum gas tank 2; Pressure sensor 7 output low levels, brake vacuum assist controller 8 detects low level, and brake vacuum assist controller 8 will be controlled vacuum pump 1 and open; If vacuum pressure is to reach setting value in the vacuum gas tank 2; Pressure sensor 7 output high level, brake vacuum assist controller 8 detects high level, and brake vacuum assist controller 8 will control the 1 delay working regular hour of vacuum pump and just cut out; To guarantee that vacuum pressure is enough in the vacuum gas tank 2, guarantee pure electric automobile brake vacuum assist control system normal operation.
Embodiment one:
Comprise like the said pure electric automobile brake of Fig. 1 assisted control system: 1 vacuum pump, 2 vacuum gas tanks, 3 servo-unit master cylinder assemblies, 4 brake pedals, 5 brake fluid lines, 6 storage tankers, 7 pressure sensors, 8 vacuum servo braking control devices.Servo-unit master cylinder assembly 3 forms connecting rod mechanism with brake pedal 4; Be used to brake pedal 5 power-assisted is provided; Servo-unit master cylinder assembly 3 is communicated to vacuum gas tank 2 by vacuum line; This vacuum gas tank 2 is communicated to vacuum pump 1 via vacuum line again, and vacuum gas tank 2 is provided with pressure sensor 7, and brake vacuum assist controller 8 is electrically connected with pressure sensor 7 and vacuum pump 1; Be used for detecting the size of vacuum gas tank 2 vacuum pressure values, and then control the open and close of vacuum pumps 1 through brake vacuum assist controller 8 through pressure sensor 7.Servo-unit master cylinder assembly 3 is connected with storage tanker 6 pipelines, and its joining place has rubber diaphragm, and the fluid in the servo-unit master cylinder assembly 3 bonded assembly storage tankers 6 is transported to the wheel cylinder via brake fluid line 5, reaches the purpose of drag thus.
This pure electric automobile electric vacuum booster brake control system is formed main control loop with vacuum servo braking control device 8 and pressure sensor 7; Power on brake vacuum assist controller 8 of system detects the electric signal that receives pressure sensors 7 atmospheric pressure values size; If vacuum pressure does not reach setting value in the vacuum gas tank 2; Pressure sensor 7 output low levels, brake vacuum assist controller 8 detects low level, and brake vacuum assist controller 8 will be controlled vacuum pump 1 and open; If vacuum pressure is to reach setting value in the vacuum gas tank 2; Pressure sensor 7 output high level, brake vacuum assist controller 8 detects high level, and work was just closed in 15 seconds when brake vacuum assist controller 8 will be controlled vacuum pump 1 court of a feudal ruler; To guarantee that vacuum pressure is enough in the vacuum gas tank 2, guarantee pure electric automobile brake vacuum assist control system normal operation.
Embodiment two:
Like Fig. 2 is vacuum servo braking control device principle schematic provided by the invention.
R1 among Fig. 2, R2, R3, R3, R4, R5, R6, R7, R8, R9 represent resistance, and C1, C2, C3 represent electric capacity, and EC1, EC2, EC3 represent chemical capacitor; RW1 representes adjustable resistance, and D1, D2 represent diode, and Q1 representes metal-oxide-semiconductor; IC1A, IC1B represent comparator, and VCC representes power input, VIN expression signal input end; GND representes ground terminal, and OUT representes mouth.
This hardware control circuit as shown in the figure comprises; Power supply reverse connecting protection and power filter that D1, EC1, C1 form; R1, R8, EC3, C3 provide the comparative voltage threshold values of comparator IC1A; Said threshold voltage scope can be set as the case may be; Under the preferable case; Said threshold voltage is the half the of power supply voltage; The negative input end (P2) as said hardware control circuit of said IC1A comparator is used for inserting the electric signal from the expression atmospheric pressure value size of pressure sensor
, and electric signal and predefined threshold voltage that the expression atmospheric pressure value that receives is big or small compare.When comparative result is the magnitude of voltage of the electric signal that receives during less than predefined threshold voltage, comparator IC1A port outputs a control signal to vacuum pump 1, open vacuum pump 1 through R7 control Q1.When comparative result is the magnitude of voltage of the electric signal that receives during greater than predefined threshold voltage, comparator IC1A port outputs a control signal to vacuum pump 1 through R7 control Q1, closes vacuum pump 1.RW1, R9, EC2, C2 form circuit when closing the court of a feudal ruler of vacuum pump 1, and said time delay circuit delay time can be set as the case may be, and under the preferable case, said time delay circuit delay adjustments is 15 seconds.
Although reference implementation example and accompanying drawing; Pure electric automobile electric vacuum booster brake control system of the present invention is illustrated; But above-mentioned disclosed content only is in order better to understand the present invention; Rather than limit the scope of claim by any way, so all according to the described structure of patent claim of the present invention, characteristic and principle do etc. change or modify, include in protection scope of the present invention.
Claims (7)
1. a pure electric automobile electric vacuum booster brake control system is characterized in that, said pure electric automobile electric vacuum booster brake control system comprises: vacuum pump; The vacuum gas tank, servo-unit master cylinder assembly, brake pedal; Brake fluid line; Storage tanker, pressure sensor, vacuum servo braking control device;
Described pressure sensor is positioned on the vacuum gas tank, is used for detecting the vacuum pressure value size of vacuum gas tank and feeding back to the vacuum servo controller;
Said servo-unit master cylinder assembly and brake pedal form connecting rod mechanism, be used to the brake pedal braking power-assisted is provided;
Said servo-unit master cylinder assembly is communicated with through vacuum line with the vacuum gas tank;
Said vacuum gas tank is communicated with through vacuum line with vacuum pump;
Described vacuum servo braking control device is electrically connected with described vacuum pump and pressure sensor; Be used to receive the electric signal of the detected vacuum pressure value size of pressure sensor on the vacuum gas tank; And this electric signal is handled back output control signal give vacuum pump, with the open and close of control vacuum pump.
2. pure electric automobile electric vacuum booster brake control system according to claim 1 is characterized in that said vacuum servo braking control device comprises:
Power supply protection and filtration module are used for power supply is carried out reverse connecting protection and carries out filtering;
Signal receiving module is used to receive the electric signal of the vacuum pressure value of said pressure sensor feedback;
The threshold voltage module is used to set the threshold voltage that the electric signal with pressure sensor feedback vacuum pressure value compares;
Voltage comparison module is used for the threshold voltage that the received electric signal of signal receiving module and threshold voltage module set is compared, and comparative result is exported to signal output module;
Signal output module is used for the comparative result of said voltage comparison module output is exported to vacuum pump and according to the open and close of comparative result control vacuum pump.
3. like the said pure electric automobile electric vacuum booster of claim 2 brake control system, it is characterized in that: said threshold voltage can be revised setting.
4. like the said pure electric automobile electric vacuum booster of claim 3 brake control system, it is characterized in that: said threshold voltage is set at the half the of power supply voltage.
5. like the said pure electric automobile electric vacuum booster of claim 2 brake control system, it is characterized in that: said brake vacuum assist controller also comprises the time delay circuit module, is used for signal output module is controlled the pass of delaying time when voltage is closed.
6. like the said pure electric automobile electric vacuum booster of claim 5 brake control system, it is characterized in that: the said time-delay closing time is 15 seconds.
7. pure electric automobile electric vacuum booster brake control system according to claim 1, it is characterized in that: said servo-unit master cylinder assembly is connected with storage tanker, and the fluid in the storage tanker flows to the wheel cylinder via brake fluid line, to carry out drag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101488441A CN102673551A (en) | 2012-05-15 | 2012-05-15 | Electric vacuum servo brake control system of pure electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101488441A CN102673551A (en) | 2012-05-15 | 2012-05-15 | Electric vacuum servo brake control system of pure electric automobile |
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| CN102673551A true CN102673551A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101488441A Pending CN102673551A (en) | 2012-05-15 | 2012-05-15 | Electric vacuum servo brake control system of pure electric automobile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083249A (en) * | 2015-09-22 | 2015-11-25 | 苏州普京真空技术有限公司 | Vacuum booster |
| CN108248589A (en) * | 2018-03-02 | 2018-07-06 | 江苏凯龙宝顿动力科技有限公司 | A kind of electric motor intelligent brake assist system and its control method |
| CN108407792A (en) * | 2018-03-28 | 2018-08-17 | 浙江大行科技有限公司 | Automobile brake rotary-vane vaccum pump detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070240421A1 (en) * | 2004-06-17 | 2007-10-18 | Continental Teves Ag & Co. Ohg | Hydraulic Unit |
| CN101357630A (en) * | 2007-07-30 | 2009-02-04 | 比亚迪股份有限公司 | Brake vacuum booster device for electric automobile and control method thereof |
| CN201525372U (en) * | 2009-10-21 | 2010-07-14 | 深圳市陆地方舟电动车有限公司 | Electric power brake auxiliary system of electric vehicle |
| 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 |
-
2012
- 2012-05-15 CN CN2012101488441A patent/CN102673551A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070240421A1 (en) * | 2004-06-17 | 2007-10-18 | Continental Teves Ag & Co. Ohg | Hydraulic Unit |
| CN101357630A (en) * | 2007-07-30 | 2009-02-04 | 比亚迪股份有限公司 | Brake vacuum booster device for electric automobile and control method thereof |
| CN201525372U (en) * | 2009-10-21 | 2010-07-14 | 深圳市陆地方舟电动车有限公司 | Electric power brake auxiliary system of electric vehicle |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083249A (en) * | 2015-09-22 | 2015-11-25 | 苏州普京真空技术有限公司 | Vacuum booster |
| CN108248589A (en) * | 2018-03-02 | 2018-07-06 | 江苏凯龙宝顿动力科技有限公司 | A kind of electric motor intelligent brake assist system and its control method |
| CN108407792A (en) * | 2018-03-28 | 2018-08-17 | 浙江大行科技有限公司 | Automobile brake rotary-vane vaccum pump detection device |
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Legal Events
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| C06 | Publication | ||
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Fourth, AIA second industrial zone Tianliao community Tong Ming Road 518000 Guangdong province Shenzhen Guangming New District Office of Gongming 5, 6, 7 Applicant after: SHENZHEN GREENWHEEL ELECTRIC VECHICLE GROUP CO., LTD. Address before: Fourth, AIA second industrial zone Tianliao community Tong Ming Road 518000 Guangdong province Shenzhen Guangming New District Office of Gongming 5, 6, 7 Applicant before: Shenzhen GreenWheel Electric Vehicle Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHENZHEN GEENWILL ELECTRIC VEHICLE CO., LTD. TO: SHENZHEN GREEN WHEEL EV NEW ENERGY ELECTROMBILE GROUP CO., LTD. |
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| C10 | Entry into substantive examination | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120919 Assignee: JIANGSU GREENWHEEL NEW ENERGY ELECTRIC VEHICLE CO., LTD. Assignor: SHENZHEN GREENWHEEL ELECTRIC VECHICLE GROUP CO., LTD. Contract record no.: 2015320000593 Denomination of invention: Electric vacuum servo brake control system of pure electric automobile License type: Common License Record date: 20150918 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170117 Address after: 226500 Jiangsu city of Rugao Province town Huacheng Road No. 188 (Rugao Economic Development Zone) Applicant after: JIANGSU GREENWHEEL NEW ENERGY ELECTRIC VEHICLE CO., LTD. Address before: Fourth, AIA second industrial zone Tianliao community Tong Ming Road 518000 Guangdong province Shenzhen Guangming New District Office of Gongming 5, 6, 7 Applicant before: SHENZHEN GREENWHEEL ELECTRIC VECHICLE GROUP CO., LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120919 |