CN100343102C - Electromobile braking system - Google Patents
Electromobile braking system Download PDFInfo
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- CN100343102C CN100343102C CNB2004100400015A CN200410040001A CN100343102C CN 100343102 C CN100343102 C CN 100343102C CN B2004100400015 A CNB2004100400015 A CN B2004100400015A CN 200410040001 A CN200410040001 A CN 200410040001A CN 100343102 C CN100343102 C CN 100343102C
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- 230000000694 effects Effects 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The present invention discloses an electric automobile braking system comprising a braking pedal, a braking main cylinder, a braking wheel cylinder linked with the braking main cylinder by hydraulic pressure and a brake strip mechanically connected with the braking wheel cylinder, wherein the brake strip is arranged on a wheel and can be appressed with one region of the wheel to rub under the action of the braking wheel cylinder in order to generate braking force. The present invention is characterized in that the present invention also comprises a displacement sensor used for sensing the position motion of the braking pedal and converting the position motion to an electrical signal, an electronic control unit receiving the electrical signal from the displacement sensor and sending out an action command and an executor receiving the action command of the electronic control unit and generating the action, wherein the executor is connected with the braking main cylinder by a transmission device. The present invention generates braking boosting force by a braking booster system electronically controlled and cancels a vacuum booster with big volume, and thereby, the effect of optimizing the structural arrangement of the entire automobile is reached.
Description
Technical field:
The present invention relates to a kind of braking system of electric car.
Background technology:
Extensively adopt vacuum booster as brake servo unit on the automobile, mainly utilize the degree of vacuum at driving engine trunnion place to help the pilot control brake pedal, to reach power-assisted effect, what adopt between brake pedal and the vacuum booster is mechanical connection.Because bulky vacuum booster is arranged, the layout of complete vehicle structure is subject to many limitations.
On the other hand, if adopt the vacuum booster system on electronlmobil, power-assisted effect is just not too obvious in the process of braking.In fact, engine negative pressure effect thereby degree of vacuum are too not little owing to having, and can not reach tangible labour-saving effect.
Be 02261501.6 in the patent No., name is called in the Chinese utility model patent of " brake system that motor regenerative braking and hydraulic braking jointly control ", disclose a kind of electric parking brake system, utilize the regenerative braking characteristic of motor to carry out auxiliary braking and recuperated energy.But the major advantage of this system is recuperated energy, does not provide brake boost and lie in.In fact, when capacity of cell during near fullcharging (as the SOC value greater than 60%), this system can't utilize the regenerative braking characteristic of motor to carry out auxiliary braking, thereby does not also just have brake boost.
Summary of the invention:
Purpose of the present invention is exactly can't provide the problem of brake boost in order to solve electronlmobil, and a kind of braking system of electric car is provided, and reaches tangible labour-saving effect, and optimization system is arranged.
For achieving the above object, the present invention proposes a kind of braking system of electric car, comprise brake pedal 13, master brake cylinder (8), brake wheel cylinder that links by hydraulic pressure with master brake cylinder (8) or brake clamp and the brake strip or the brake disc that link to each other with brake wheel cylinder or brake clamp machinery, brake strip or brake disc are located at the wheel side and can be close to friction to produce braking force with a position of wheel under the effects of brake wheel cylinder, also comprise and be used for that inductive brake pedal (13) position is moved and this position moved the braking intention sensor (12) that is converted into electric signal, reception comes the electric signal of self-retention intention sensor (12) and sends the electronic control unit (10) of action command, receive the action command of electronic control unit (10) and produce the actr of action, it is characterized in that: described actr links to each other with described master brake cylinder (8) by driving device, and described driving device is adjusted braking force between brake strip or brake disc and the wheel by changing brake-pressure in the master brake cylinder (8).
Owing to adopted above scheme, the invention provides the electronically controlled force aid system for braking of a cover, it can find out the braking intention of chaufeur by sensor, and should be intended to line and passed to control unit, and then control execution unit action, by the actuator drives master brake cylinder, produce brake boost.
Owing to cancelled bulky vacuum booster, therefore on braking system of electric car, allow the brake pedal and the annexation of master brake cylinder realize changing linear the connection into by mechanical connection, optimize the effect that complete vehicle structure is arranged thereby can reach.
Description of drawings:
Fig. 1 is the embodiment of the invention one actr and driving device scheme drawing (initial position).
Fig. 2 is the embodiment of the invention one actr and driving device scheme drawing (run location).
Fig. 3 is the embodiment of the invention one an anti-roll effect piece scheme drawing.
Fig. 4 is the embodiment of the invention one a system global structure block scheme.
Fig. 5 is the embodiment of the invention one a system mechanics structural representation.
Fig. 6 is an embodiment of the invention two system physical construction scheme drawing.
The specific embodiment:
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
Embodiment one: see Fig. 4,5, shown in braking system of electric car, brake wheel cylinder (or using brake clamp) 15 that comprises brake pedal 13, master brake cylinder 8, links by hydraulic pressure with master brake cylinder 8 and the brake strip (or brake disc) 16 that links to each other with brake wheel cylinder machinery, brake strip is located on the wheel and can be close to friction with the generation braking force with a position of wheel under the effect of brake wheel cylinder.
System is different with traditional braking, the present invention also comprises and is used for that inductive brake pedal 13 positions are moved and this position is moved the braking intention sensor 12 that is converted into electric signal, reception comes the electric signal of self-retention intention sensor 12 and sends the electronic control unit 10 (being called for short ECU) of action command, receive the action command of electronic control unit 10 and produce the actr of action, described actr links to each other with described master brake cylinder 8 by driving device.
Fig. 1, the 2nd, actr and driving device scheme drawing in the described brake system.
The mutual alignment of various piece relation and annexation are in actr and driving device: electrical motor 1 and retarder 2 are as a whole, nut 4 and push rod 9 are fixed on the contiguous block (being connecting assembly again) 6, electrical motor and retarder, anti-roll effect piece, master brake cylinder, position transduser 5 all is fixed relationships, adopt flat key between screw 3 and retarder 2 output shafts, bolt connects simultaneously, the threads engaged of screw 3 and nut 4, contiguous block issues the life shifting movement in the turning effort of screw like this, anti-roll effect piece 7 as shown in Figure 3, it is fixed in structure, it only and movement relation arranged between the contiguous block, this movement relation is a slipping motion, guide groove by both sides prevents that the motor arm of action from following its rotation under the drive of helical screw rotation, and control push rod 9 (be motor arm of action 91 in Fig. 6) is at axial motion.Wherein the effect of position transduser 5 is: the position of real-time and dynamic monitoring piston rod, so that calculate the interior pressure of current master brake cylinder.
The label of all the other elements is among Fig. 5: 11-pedal feel simulator, the 14-threeway connects valve, 15-brake clamp, 16-brake disc, signal 1---speed sensor, signal 2---rotary angle transmitter, signal 3---yaw velocity sensor.Need to prove that the concrete structure of driving system can have other modes:, enumerate no longer one by one as adopting gear transmission, lever transmission etc.
Electrical motor 1 adopts DC servo motor, has time resolution characteristics preferably, avoids producing the power-assisted hysteresis phenomenon.
On described brake pedal 13, also be provided with feel simulator 11 (being a spring in this example), be used for when brake pedal 13 is depressed, producing counter-force, so that the personnel that control can perception what of push down on the pedal, and after brake pedal 13 is released, make brake pedal 13 return in time.
The control method of braking procedure is that braking force is by ECU and actr control, carry out in the brake operation course at chaufeur, the braking intention of being found out chaufeur by pedal stroke sensor (is slowly slowed down, snap catch), this intention is converted to electric signal and passes to ECU, the simplest control method is exactly the signal linear process of position transduser 5 (being the braking intention sensor in this example), makes braking force be proportional to the distance that brake pedal is stepped on.
But consider needs such as anti-lock, can adopt more optimal control method, for example: ECU compiles wheel speed sensors (signal 1) in the present embodiment, steering angle sensor (signal 2), yaw velocity, longitudinal acceleration sensor (signal 3) waits each road signal, by comparing the data that rotary angle transmitter and yaw velocity sensor are collected, whether can judge vehicle in the bend road conditions, utilize the speed of a motor vehicle and vehicle wheel rotational speed can obtain the slip rate of wheel, use the method for brake pedal displacement pickup in addition by differential calculation, identify the speed of pedal, just can find out out braking intention (the slowly braking of chaufeur, snap catch), data with prior setting compare again, select wherein a kind of braking intention of execution.In electronic control unit,, serve as according to calculating current needed braking force with different vehicle running states and slip rate by the various sensor signal of its synchronous processing.
Also have a possible mode to be: ECU is according to the data of collecting, calculate the maximum braking force that this moment allows, when the braking force that is proportional to the distance that brake pedal steps near or when equaling this maximum braking force, no longer increase braking force, with the anti-vehicle locking.
The drg principle of work of present embodiment employing at present is: chaufeur is stepped on brake pedal, promotes the piston rod that and braking pressure regulator and master brake cylinder links to each other.Master brake cylinder will form corresponding pressure according to the size of treadle effort on the braking route, under machinery and fluid power mutual action, promote brake clamp by wheel edge trig cylinder and press to brake disc.
In actuating system, adopt servomotor motor to be carried out current control in the mode of closed loop control, utilize the characteristics of worm drive, be converted into straight-line motion rotatablely moving, thereby drive the work of brake master cylinder piston, the hydraulic braking force that produces in the master brake cylinder is delivered on each brake wheel cylinder, thereby is guaranteeing to finish vehicle braked with the deceleration/decel of the best under the riding stability condition.
What adopt in native system is electronic brake pedal 13, and it is connected with the ECU of system by the mode (the linear connection) of cable, because linear connected system is compared with the preceence of mechanical connection.Therefore the layout in whole brake system structure parts just seems very flexible, does not resemble be connected (must be fixed together by the push rod fork of vacuum booster) of brake action arm and vacuum booster on the present automobile.Substitute traditional hydraulic braking pedal 13 with electronic type brake pedal 13, cancelled bulky vacuum brake assistor, can optimize the structural arrangement of car load.In addition, system can shorten the reaction time according to different driving cycles automatically regulating master cylinder brake-pressures, avoided hydraulic machinery brake system effect counter-force cause vibrations and cause the driver to reduce the danger of braking force unconsciously.
Embodiment two: as shown in Figure 6, also comprise second driving device---pedal push rod 21 in this example, its end links to each other with brake pedal 13, and the other end links to each other by the piston rod of tandem piece 20 with master brake cylinder 8, is used for stepping on back direct drive master brake cylinder 8 at brake pedal 13 and produces braking force.Notice that push rod 9 among the embodiment one has been divided into 21 3 of motor arm of action 91, piston push rod 92 and pedal push rods here, to show differentiation.Motor arm of action 91 and pedal push rod 21 can independently act on separately on the tandem piece 20 (adopt here " tandem piece " speech for the ease of with embodiment one in " contiguous block " distinguish mutually), two arm of actions all are sliding relation on tandem piece 20, and tandem piece 20 will be delivered to piston push rod all from the direct driving force of pedal with from the propelling thrust of motor push rod.When electric-control system is malfunctioning, can also keep certain braking force like this, to guarantee safety.In fact, in this example, electric controlled brake system just produces power-assisted to braking, rather than brake system is whole.
Claims (7)
1, a kind of braking system of electric car, comprise brake pedal 13, master brake cylinder (8), brake wheel cylinder that links by hydraulic pressure with master brake cylinder (8) or brake clamp and the brake strip or the brake disc that link to each other with brake wheel cylinder or brake clamp machinery, brake strip or brake disc are located at the wheel side and can be close to friction to produce braking force with a position of wheel under the effects of brake wheel cylinder, also comprise and be used for that inductive brake pedal (13) position is moved and this position moved the braking intention sensor (12) that is converted into electric signal, reception comes the electric signal of self-retention intention sensor (12) and sends the electronic control unit (10) of action command, receive the action command of electronic control unit (10) and produce the actr of action, it is characterized in that: described actr links to each other with described master brake cylinder (8) by driving device, and described driving device is adjusted braking force between brake strip or brake disc and the wheel by changing brake-pressure in the master brake cylinder (8).
2, braking system of electric car as claimed in claim 1 is characterized in that: the retarder (2) that described actr comprises electrical motor (1) and is attached thereto; Described driving device comprise screw (3), with the nut (4) and the push rod (9) that links to each other with nut (4) of screw (3) screw thread fit, described push rod (9) links to each other with the piston of master brake cylinder (8).
3, braking system of electric car as claimed in claim 2 is characterized in that: described push rod (9) links to each other with nut (4) by contiguous block (6), and promptly nut (4) and push rod (9) are fixed on the contiguous block (6); Upward or outside it anti-roll effect piece (7) is arranged at contiguous block (6), make contiguous block (6) can under the restriction of anti-roll effect piece (7), can only produce slippage and move fortune and limit its rotation.
4, braking system of electric car as claimed in claim 2 is characterized in that: described electrical motor (1) and retarder (2) are as a whole; Adopt flat key, bolt to be connected simultaneously between screw (3) and retarder (2) output shaft.
5, braking system of electric car as claimed in claim 1 or 2 is characterized in that: described braking intention sensor (12) is a displacement pickup; Also comprise speed sensor, rotary angle transmitter and yaw velocity, longitudinal acceleration sensor in the brake system, its signal output part all links to each other with electronic control unit (10), is respectively applied for induction wheel speed, deflection angle and yaw velocity longitudinal acceleration.
6, braking system of electric car as claimed in claim 1 or 2, it is characterized in that: on described brake pedal (13), also be provided with feel simulator (11), be used for when brake pedal (13) is depressed, producing counter-force, and after brake pedal (13) is released, make brake pedal (13) return in time.
7, braking system of electric car as claimed in claim 1 or 2, it is characterized in that: also comprise second driving device, it all links to each other with master brake cylinder (8) with brake pedal (13), is used for direct drive master brake cylinder (8) generation braking force after brake pedal (13) is stepped on certain distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100400015A CN100343102C (en) | 2004-06-10 | 2004-06-10 | Electromobile braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100400015A CN100343102C (en) | 2004-06-10 | 2004-06-10 | Electromobile braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1706701A CN1706701A (en) | 2005-12-14 |
| CN100343102C true CN100343102C (en) | 2007-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100400015A Expired - Fee Related CN100343102C (en) | 2004-06-10 | 2004-06-10 | Electromobile braking system |
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| Country | Link |
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| CN (1) | CN100343102C (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100515821C (en) * | 2005-12-19 | 2009-07-22 | 比亚迪股份有限公司 | Combined brake controlling system of electromobile |
| KR100897941B1 (en) * | 2007-09-12 | 2009-05-18 | 현대모비스 주식회사 | Solenoid assisting force generated type Single Motor Electric Wedge Brake System |
| CN101559766B (en) * | 2009-06-01 | 2011-08-10 | 奇瑞汽车股份有限公司 | Automobile braking system |
| CN102029915B (en) * | 2009-09-25 | 2013-06-26 | 株式会社万都 | Regenerative braking system |
| CN101797917B (en) * | 2010-03-25 | 2012-02-08 | 中国人民解放军炮兵学院 | Braking device of unmanned vehicle |
| CN102275576A (en) * | 2011-06-03 | 2011-12-14 | 南昌工程学院 | Automobile brake-by-wire system based on giant magnetostriction |
| CN103231706B (en) * | 2013-05-14 | 2014-12-24 | 湖南湖大艾盛汽车技术开发有限公司 | Electric brake booster |
| CN103496365A (en) * | 2013-10-25 | 2014-01-08 | 北京汽车股份有限公司 | Hydraulic brake master pump assisted by electric power |
| CN104442778A (en) * | 2014-12-31 | 2015-03-25 | 朱海燕 | Hydraulic brake system of electric vehicle |
| CN105936262B (en) * | 2016-07-12 | 2019-01-11 | 桂林思超汽车科技有限公司 | Electric-control auxiliary brake method and device |
| CN106828475A (en) * | 2017-03-09 | 2017-06-13 | 华景科技无锡有限公司 | A kind of brake booster device and its brake method |
| CN108569265B (en) * | 2017-07-03 | 2020-05-29 | 浙江零跑科技有限公司 | Automobile brake simulation system |
| CN107415918B (en) * | 2017-07-17 | 2024-01-30 | 安徽工程大学 | Braking system suitable for electric vehicle |
| CN108528420A (en) * | 2018-03-28 | 2018-09-14 | 浙江吉利控股集团有限公司 | A kind of motor vehicle braking system and braking method |
| CN110203179B (en) * | 2019-05-28 | 2024-10-18 | 武汉理工大学 | Brake for electric automobile based on hydraulic energy braking |
| CN113104003B (en) * | 2021-04-21 | 2022-09-16 | 江苏大学 | Automobile safety braking booster unit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3518715A1 (en) * | 1985-05-24 | 1986-11-27 | Daimler-Benz Ag, 7000 Stuttgart | Parking brake device |
| DE4401524A1 (en) * | 1993-03-27 | 1995-08-17 | Teves Gmbh Alfred | Hydraulic braking system with slip control esp. for motor vehicle |
| US5558409A (en) * | 1994-12-14 | 1996-09-24 | General Motors Corporation | Electrohydraulic braking system |
| DE19620344A1 (en) * | 1996-02-09 | 1997-08-14 | Teves Gmbh Alfred | Combined service and parking brake system |
| CN1184742A (en) * | 1996-05-29 | 1998-06-17 | 方中祥 | Intelligent braking type anti-blocking-system |
| US6033036A (en) * | 1995-09-08 | 2000-03-07 | Itt Manufacturing Enterprises Inc. | Electronically controllable brake operating system for motor vehicles |
| DE10055715A1 (en) * | 1999-11-12 | 2001-05-31 | Aisin Seiki | Hydraulic braking device for vehicles has valve element for opening/closing power chamber in hydraulic booster in response to hydraulic pressure in main cylinder to control boost process |
| US6578932B2 (en) * | 2001-02-19 | 2003-06-17 | Aisin Seiki Kabushiki Kaisha | Hydraulic brake apparatus for a vehicle |
-
2004
- 2004-06-10 CN CNB2004100400015A patent/CN100343102C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3518715A1 (en) * | 1985-05-24 | 1986-11-27 | Daimler-Benz Ag, 7000 Stuttgart | Parking brake device |
| DE4401524A1 (en) * | 1993-03-27 | 1995-08-17 | Teves Gmbh Alfred | Hydraulic braking system with slip control esp. for motor vehicle |
| US5558409A (en) * | 1994-12-14 | 1996-09-24 | General Motors Corporation | Electrohydraulic braking system |
| US6033036A (en) * | 1995-09-08 | 2000-03-07 | Itt Manufacturing Enterprises Inc. | Electronically controllable brake operating system for motor vehicles |
| DE19620344A1 (en) * | 1996-02-09 | 1997-08-14 | Teves Gmbh Alfred | Combined service and parking brake system |
| CN1184742A (en) * | 1996-05-29 | 1998-06-17 | 方中祥 | Intelligent braking type anti-blocking-system |
| DE10055715A1 (en) * | 1999-11-12 | 2001-05-31 | Aisin Seiki | Hydraulic braking device for vehicles has valve element for opening/closing power chamber in hydraulic booster in response to hydraulic pressure in main cylinder to control boost process |
| US6578932B2 (en) * | 2001-02-19 | 2003-06-17 | Aisin Seiki Kabushiki Kaisha | Hydraulic brake apparatus for a vehicle |
Also Published As
| Publication number | Publication date |
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| CN1706701A (en) | 2005-12-14 |
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