CN202827557U - Electric vehicle power-driven vacuum servobrake control system - Google Patents
Electric vehicle power-driven vacuum servobrake control system Download PDFInfo
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- CN202827557U CN202827557U CN2012202162083U CN201220216208U CN202827557U CN 202827557 U CN202827557 U CN 202827557U CN 2012202162083 U CN2012202162083 U CN 2012202162083U CN 201220216208 U CN201220216208 U CN 201220216208U CN 202827557 U CN202827557 U CN 202827557U
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- pressure sensor
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Abstract
The utility model relates to an electric vehicle power-driven vacuum servobrake control system which comprises a vacuum pump, a vacuum gas storage tank, a servo actuator main cylinder assembly, a brake pedal, a brake oil way, an oil storage tank, a pressure sensor and a vacuum servobrake control device. The pressure sensor is located on the vacuum gas storage tank, the servo actuator main cylinder assembly and the brake pedal form a link mechanism, the servo actuator main cylinder assembly is communicated with the vacuum gas storage tank through a vacuum pipeline, the vacuum gas storage tank and the vacuum pump are communicated with a vacuum pipeline, the vacuum servobrake control device is in electrical connection with the vacuum pump and the pressure sensor to control opening and closing of the vacuum pump. According to the electric vehicle power-driven vacuum servobrake control system, the opening and the closing of the vacuum pump are controlled through the vacuum servobrake control device, and therefore vacuum pressure of the vacuum gas storage tank in the vacuum servobrake control system is guaranteed, sensitivity and reliability of the electric vehicle power-driven vacuum servobrake control system are effectively guaranteed, and traffic safety is guaranteed to the maximum degree.
Description
Technical field
The utility model relates to automobile brake system, particularly pure electric automobile Special braking vacuum servo control system.
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 booster 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.
The traditional fuel-engined vehicle mainly machinery by driving engine rotates constantly and vacuumizes, and to ensure certain brake power-assisted, operating mode is relatively sensitiveer.And in the present pure electric automobile, driving engine to be being replaced by electrical motor, and electrical motor can not always rotation as driving engine, and therefore the effect of brake can not show a candle to traditional fuel-engined vehicle, for vehicle performance and traffic safety very large restriction and hidden danger is arranged.
Summary of the invention
The utility model provides a kind of safe and reliable pure electric automobile electric vacuum booster brake control system, guarantees sensitivity and the reliability of pure electric automobile brake, guarantees to greatest extent the traffic safety of pure electric automobile.
The technical solution of the utility model is specially:
Described 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, for detection of the vacuum pressure value in vacuum gas tank size and feed back to the vacuum servo braking control device;
Described servo-unit master cylinder assembly and brake pedal form connecting rod mechanism, are used to the brake pedal braking that power-assisted is provided;
Described servo-unit master cylinder assembly is communicated with by vacuum line with the vacuum gas tank;
Described vacuum gas tank is communicated with by vacuum line with vacuum pump;
Described vacuum servo braking control device is electrically connected with described vacuum pump and pressure sensor, be used for to receive the electric signal of the vacuum pressure value size that the pressure sensor on the vacuum gas tank detects, and this electric signal processed rear output control signal to vacuum pump, with the open and close of control vacuum pump;
Fluid in the storage tanker that described servo-unit master cylinder assembly connects flows to the wheel cylinder via brake fluid line, to carry out drag;
Further described 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 for the electric signal of the vacuum pressure value that receives described pressure sensor feedback;
The threshold voltage module be used for to be 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 described voltage comparison module output is exported to vacuum pump and according to the open and close of comparative result control vacuum pump.
Further described threshold voltage can be revised setting.
Further described threshold voltage is set as half of power line voltage.
Further described vacuum servo braking control device also comprises delay circuit module, carries out time-delay closing when voltage is closed for signal output module is controlled.
The further described 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 forms main control loop with vacuum servo braking control device and pressure sensor, system's vacuum servo braking control device that powers on detect to receive the electric signal of pressure sensor atmospheric pressure value size, if vacuum pressure does not reach setting value in the vacuum gas tank, the pressure sensor output low level, the vacuum servo braking control device detects low level, the vacuum servo braking control device will be controlled vacuum pump and open, if vacuum pressure is to reach setting value in the vacuum gas tank, pressure sensor output high level, the vacuum servo braking control device detects high level, the vacuum servo braking control device will be controlled the vacuum pump delay working regular hour and just close, to guarantee that vacuum pressure is enough in the vacuum gas tank, guarantee the normal operation of pure electric automobile brake vacuum assist control system.
The beneficial effects of the utility model are: 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 sensitivity and the reliability of pure electric automobile braking vacuum booster device, guaranteed to greatest extent traffic safety.
Description of drawings
Fig. 1 is pure electric automobile electric vacuum booster brake control system structural representation;
Fig. 2 is 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, vacuum servo braking control 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 utility model provides a kind of safe and reliable pure electric automobile electric vacuum booster brake control system, guarantees sensitivity and the reliability of pure electric automobile brake, guarantees to greatest extent the traffic safety of pure electric automobile.
The technical solution of the utility model is specially:
Described 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, for detection of the vacuum pressure value in vacuum gas tank size and feed back to the vacuum servo braking control device;
Described servo-unit master cylinder assembly and brake pedal form connecting rod mechanism, are used to the brake pedal braking that power-assisted is provided;
Described servo-unit master cylinder assembly is communicated with by vacuum line with the vacuum gas tank;
Described vacuum gas tank is communicated with by vacuum line with vacuum pump;
Described vacuum servo braking control device is electrically connected with described vacuum pump and pressure sensor, be used for to receive the electric signal of the vacuum pressure value size that the pressure sensor on the vacuum gas tank detects, and this electric signal processed rear output control signal to vacuum pump, with the open and close of control vacuum pump;
Fluid in the storage tanker that described servo-unit master cylinder assembly connects flows to the wheel cylinder via brake fluid line, to carry out drag;
Further described 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 for the electric signal of the vacuum pressure value that receives described pressure sensor feedback;
The threshold voltage module be used for to be 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 described voltage comparison module output is exported to vacuum pump and according to the open and close of comparative result control vacuum pump.
Further described threshold voltage can be revised setting.
Further described threshold voltage is set as half of power line voltage.
Further described vacuum servo braking control device also comprises delay circuit module, carries out time-delay closing when voltage is closed for signal output module is controlled.
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 forms main control loop with vacuum servo braking control device 8 and pressure sensor 7, power on vacuum servo braking control device 8 of system detects the electric signal that receives pressure sensors 7 atmospheric pressure value sizes, if vacuum pressure does not reach setting value in the vacuum gas tank 2, pressure sensor 7 output low levels, vacuum servo braking control device 8 detects low level, vacuum servo braking control device 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, vacuum servo braking control device 8 detects high level, vacuum servo braking control device 8 will be controlled the 1 delay working regular hour of vacuum pump and just close, to guarantee that vacuum pressure is enough in the vacuum gas tank 2, guarantee the normal operation of pure electric automobile brake vacuum assist control system.
Embodiment one:
Pure electric automobile brake assisted control system comprises as described in Figure 1: 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 4 that 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, be provided with pressure sensor 7 on the vacuum gas tank 2, vacuum servo braking control device 8 is electrically connected with pressure sensor 7 and vacuum pump 1, be used for detecting by pressure sensor 7 size of vacuum gas tank 2 vacuum pressure values, and then control the open and close of vacuum pumps 1 by vacuum servo braking control device 8.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 storage tanker 6 that servo-unit master cylinder assembly 3 connects is transported to the wheel cylinder via brake fluid line 5, reaches thus the purpose of drag.
This pure electric automobile electric vacuum booster brake control system forms main control loop with vacuum servo braking control device 8 and pressure sensor 7, power on vacuum servo braking control device 8 of system detects the electric signal that receives pressure sensors 7 atmospheric pressure value sizes, if vacuum pressure does not reach setting value in the vacuum gas tank 2, pressure sensor 7 output low levels, vacuum servo braking control device 8 detects low level, vacuum servo braking control device 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, vacuum servo braking control device 8 detects high level, work was just closed in 15 seconds when vacuum servo braking control device 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 the normal operation of pure electric automobile brake vacuum assist control system.
Embodiment two:
The vacuum servo braking control device principle schematic that provides for the utility model such as Fig. 2.
R1 among Fig. 2, R2, R3, R3, R4, R5, R6, R7, R8, R9 represent resistance, C1, C2, C3 represent electric capacity, EC1, EC2, EC3 represent chemical capacitor, and RW1 represents adjustable resistance, and D1, D2 represent diode, Q1 represents metal-oxide-semiconductor, IC1A, IC1B represent comparator, and VCC represents power input, and VIN represents signal input part, GND represents ground terminal, and OUT represents mouth.
This hardware control circuit comprises as shown in the figure; 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; described threshold voltage scope can be set as the case may be; under the preferable case; described threshold voltage is half of power supply voltage, and the negative input end (P2) as described hardware control circuit of described IC1A comparator is used for access from pressure sensor
The electric signal of expression atmospheric pressure value size, electric signal and the predefined threshold voltage of the expression atmospheric pressure value size that receives compared.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 through R7 control Q1, opens vacuum pump 1.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 described time delay circuit delay time can be set as the case may be, and under the preferable case, described time delay circuit delay adjustments is 15 seconds.
Although reference example and accompanying drawing; pure electric automobile electric vacuum booster brake control system of the present utility model is illustrated; but above-mentioned disclosed content only is in order better to understand the utility model; rather than limit by any way the scope of claim; so all according to the described structure of the utility model patent claim, feature and principle do etc. change or modify, be included in protection domain of the present utility model.
Claims (7)
1. pure electric automobile electric vacuum booster brake control system, it is characterized in that, described 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, for detection of the vacuum pressure value in vacuum gas tank size and feed back to the vacuum servo controller;
Described servo-unit master cylinder assembly and brake pedal form connecting rod mechanism, are used to the brake pedal braking that power-assisted is provided;
Described servo-unit master cylinder assembly is communicated with by vacuum line with the vacuum gas tank;
Described vacuum gas tank is communicated with by vacuum line with vacuum pump;
Described vacuum servo braking control device is electrically connected with described vacuum pump and pressure sensor, be used for to receive the electric signal of the vacuum pressure value size that the pressure sensor on the vacuum gas tank detects, and this electric signal processed rear output control signal to vacuum pump, with the open and close of control vacuum pump.
2. pure electric automobile electric vacuum booster brake control system as claimed in claim 1 is characterized in that described 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 for the electric signal of the vacuum pressure value that receives described pressure sensor feedback;
The threshold voltage module be used for to be 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 described voltage comparison module output is exported to vacuum pump and according to the open and close of comparative result control vacuum pump.
3. pure electric automobile electric vacuum booster brake control system as claimed in claim 2, it is characterized in that: described threshold voltage can be revised setting.
4. pure electric automobile electric vacuum booster brake control system as claimed in claim 3, it is characterized in that: described threshold voltage is set as half of power supply voltage.
5. pure electric automobile electric vacuum booster brake control system as claimed in claim 2, it is characterized in that: described vacuum servo braking control device also comprises delay circuit module, carries out time-delay closing when being used for signal output module control voltage closed.
6. pure electric automobile electric vacuum booster brake control system as claimed in claim 5, it is characterized in that: the described time-delay closing time is 15 seconds.
7. pure electric automobile electric vacuum booster brake control system as claimed in claim 1, it is characterized in that: described 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 |
|---|---|---|---|
| CN2012202162083U CN202827557U (en) | 2012-05-15 | 2012-05-15 | Electric vehicle power-driven vacuum servobrake control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202162083U CN202827557U (en) | 2012-05-15 | 2012-05-15 | Electric vehicle power-driven vacuum servobrake control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202827557U true CN202827557U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202162083U Expired - Lifetime CN202827557U (en) | 2012-05-15 | 2012-05-15 | Electric vehicle power-driven vacuum servobrake control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202827557U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
-
2012
- 2012-05-15 CN CN2012202162083U patent/CN202827557U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU GREEN WHEEL EV NEW ENERGY ELECTRIC AUTOMOB Free format text: FORMER OWNER: SHENZHEN GREEN WHEEL EV NEW ENERGY ELECTROMBILE GROUP CO., LTD. Effective date: 20131220 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN GREEN WHEEL EV NEW ENERGY ELECTROMBILE GR Free format text: FORMER NAME: SHENZHEN GEENWILL ELECTRIC VEHICLE CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 226502 NANTONG, JIANGSU PROVINCE |
|
| CP01 | Change in the name or title of a patent holder |
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 Patentee after: GREENWHEEL 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 Patentee before: SHENZHEN GREENWHEEL ELECTRIC VEHICLE Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131220 Address after: 226502 Jiangsu city of Nantong province Rugao city town Huacheng Road No. 188 (Rugao Economic Development Zone) Patentee 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 Patentee before: GREENWHEEL ELECTRIC VEHICLE CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |