CN100402354C - Hydraulic assisted braking system of electric power automobile - Google Patents
Hydraulic assisted braking system of electric power automobile Download PDFInfo
- Publication number
- CN100402354C CN100402354C CNB2004100894299A CN200410089429A CN100402354C CN 100402354 C CN100402354 C CN 100402354C CN B2004100894299 A CNB2004100894299 A CN B2004100894299A CN 200410089429 A CN200410089429 A CN 200410089429A CN 100402354 C CN100402354 C CN 100402354C
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- Prior art keywords
- braking
- hydraulic
- control unit
- ecu
- electrical control
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- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The present invention discloses a hydraulic power-assisted braking system of an electric automobile, which comprises a braking master cylinder, a braking petal mechanism and a pipeline device. The present invention is characterized in that the system also comprises a hydraulic power-assisted body which is communicated with the braking master cylinder, the braking petal mechanism also comprises an angle sensor connected with a braking petal rotating shaft and an electric control unit connected with the angle sensor, and the pipeline device comprises a braking liquid inlet pipe, a braking liquid returning pipe, a liquid inlet valve and a liquid returning valve, wherein the braking liquid inlet pipe is arranged on the hydraulic power-assisted body, the braking liquid returning pipe is connected to the hydraulic power-assisted body, the liquid inlet valve is arranged on the braking liquid inlet pipe and is connected with the electronic control unit, and the liquid returning valve is arranged on the braking liquid returning pipe and is connected with the electronic control unit. The present invention causes the electric automobile can discard a vacuum braking power-assisted device and solves the problem of bad power-assisted result caused by low vacuum degree on the electric automobile.
Description
Technical field
The present invention relates to a kind of automobile hydraulic energy assisted braking system, particularly a kind of hydraulic assisted braking system of electric power automobile.
Background technology
Automobile powered by conventional energy utilizes vacuum booster as brake servo unit usually, mainly utilizes the degree of vacuum at driving engine trunnion place to help the pilot control brake pedal, to reach power-assisted effect.Mate vacuum booster on braking system of electric car, engine negative pressure effect so degree of vacuum are too not little owing to having, and can not reach tangible labour-saving effect.
German patent DE discloses a kind of braking system with hydraulic assisting force for 10232054 kinds, has wherein disclosed following technical characterictic: comprise master brake cylinder, brake pedal and pepe installation; The hydraulic booster body that communicates with master brake cylinder, the sensor that is used to detect the pedal action that links to each other with brake pedal, the braking feed tube, the braking liquid back pipe that communicates with the hydraulic booster body that are connected with the hydraulic booster body, be arranged on the feed liquor valve on the braking feed tube and be arranged on time liquid valve of braking on the liquid back pipe.But this patent protection is real braking force to be fed back to the occupant so that the technical scheme that pedal brake power is controlled is not set forth the concrete control setup and the control policy of power brake.
Summary of the invention
The objective of the invention is to address the above problem, a kind of angular signal that adopts angular transducer to measure brake pedal is provided, and control the hydraulic assisted braking system of electric power automobile that the liquid in-out valve opens and closes by the state of ECU (Electrical Control Unit) judgement angular signal.
The objective of the invention is by following existing techniques in realizing:
A kind of hydraulic assisted braking system of electric power automobile, comprise a master brake cylinder, a brake treadle mechanism and a pepe installation, native system also comprises a hydraulic booster body that communicates with this master brake cylinder, this pepe installation comprises a braking feed tube that is connected on this hydraulic booster body, a braking liquid back pipe that is connected on this hydraulic booster body, a feed liquor valve that is connected with this ECU (Electrical Control Unit) that is arranged on this braking feed tube is arranged on this braking liquid back pipe and time liquid valve that be connected with this ECU (Electrical Control Unit) with one, this brake treadle mechanism also comprise one with a brake pedal turning cylinder bonded assembly angular transducer and an ECU (Electrical Control Unit) that links to each other with this angular transducer, this angular transducer passes to this ECU (Electrical Control Unit) with the angular signal of the brake pedal of acquisition, this feed liquor valve opens or cuts out according to the control signal of this ECU (Electrical Control Unit), and this time liquid valve opens or cuts out according to the control signal of this ECU (Electrical Control Unit); The brake pedal angular signal that obtains when angular transducer is timing, and the feed liquor valve is opened; When the brake pedal angular signal of angular transducer acquisition was zero, the feed liquor valve cut out; The brake pedal angular signal that obtains when angular transducer is when negative, and the feed liquor valve cuts out, and returns the liquid valve and opens.
Wherein, this hydraulic booster body comprises that a hydraulic cavities, one are arranged in this hydraulic cavities and boosting piston and a dust boot that is fixed on this hydraulic cavities that link to each other with brake push rod.
Wherein, this braking feed tube links to each other with the energy storage tank of hydraulic power-assist steering system, and this braking liquid back pipe links to each other with the fluid reservoir of this hydraulic power-assist steering system.
Positive progressive effect of the present invention is: use the hydraulic coupling that hydraulic power-assist steering system produces, divide a pipeline on brake system, to come, adopt angular transducer to measure the angular signal of brake pedal, and judge that by ECU (Electrical Control Unit) the state of angular signal controls the liquid in-out valve and open and close, when having reduced the shared space of system, cost-cutting, can realize power brake effectively.
Description of drawings
Fig. 1 is the initial position scheme drawing of one embodiment of the invention.
Fig. 2 is the scheme drawing after the brake pedal of one embodiment of the invention moves.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
As shown in Figure 1, a kind of hydraulic assisted braking system of electric power automobile, comprise a master brake cylinder 1, a brake treadle mechanism and a pepe installation, native system also comprises a hydraulic booster body 2 that communicates with this master brake cylinder 1, comprises that a hydraulic cavities 4, one are arranged in this hydraulic cavities 4 and boosting piston 3 and dust boots 5 that are fixed on this hydraulic cavities 4 that link to each other with brake push rod 6;
This brake treadle mechanism also comprise one with a brake pedal turning cylinder bonded assembly angular transducer 9 and an ECU (Electrical Control Unit) 10 that links to each other with this angular transducer 9, this angular transducer 9 can pass to this ECU (Electrical Control Unit) 10 with the angular signal of the brake pedal 7 that obtains;
This pepe installation comprise one be connected braking feed tube 13 on this hydraulic booster body 2, one be connected braking liquid back pipe 14 on this hydraulic booster body 2, one be arranged on this braking feed tube 13 the feed liquor valve 11 that is connected with this ECU (Electrical Control Unit) 10 with one be arranged on this braking liquid back pipe 14 and be connected with this ECU (Electrical Control Unit) 10 return liquid valve 12, this braking feed tube 13 links to each other with the energy storage tank 15 of hydraulic power-assist steering system 17, and this braking liquid back pipe 14 links to each other with the fluid reservoir 16 of this hydraulic power-assist steering system 17.
At initial position, feed liquor valve 11 and time liquid valve 12 all are in normally off, when chaufeur is stepped on brake pedal 7, angular transducer 9 obtains the positive angular signal (signal of brake activation direction) of brake pedal 7, and pass to ECU (Electrical Control Unit) 10, ECU (Electrical Control Unit) 10 is sent signal to feed liquor valve 11, and feed liquor valve 11 is opened.
If sometime, the cireular frequency that ECU (Electrical Control Unit) 10 is judged the angular signal of the brake pedal that obtains from angular transducer 9 is zero, just is the pressure hold mode at this moment, and ECU (Electrical Control Unit) 10 is sent signal at stop feed liquor valve 11.
If it is negative that ECU (Electrical Control Unit) 10 is judged the angular signal of the brake pedal 7 of angular transducer 9 acquisitions, be that chaufeur reduces the pressure that is applied on the brake pedal 7, brake pedal 7 moves to initial position under the effect of pull back spring, ECU (Electrical Control Unit) 10 is just closed feed liquor valve 11, and opens back liquid valve 12.
Claims (3)
1. hydraulic assisted braking system of electric power automobile, comprise a master brake cylinder, a brake treadle mechanism and a pepe installation, native system also comprises a hydraulic booster body that communicates with this master brake cylinder, this pepe installation comprises a braking feed tube that is connected on this hydraulic booster body, a braking liquid back pipe that is connected on this hydraulic booster body, a feed liquor valve that is connected with this ECU (Electrical Control Unit) that is arranged on this braking feed tube is arranged on this braking liquid back pipe and time liquid valve that be connected with this ECU (Electrical Control Unit) with one, it is characterized in that: this brake treadle mechanism also comprise one with a brake pedal turning cylinder bonded assembly angular transducer and an ECU (Electrical Control Unit) that links to each other with this angular transducer, this angular transducer passes to this ECU (Electrical Control Unit) with the angular signal of the brake pedal of acquisition, this feed liquor valve opens or cuts out according to the control signal of this ECU (Electrical Control Unit), and this time liquid valve opens or cuts out according to the control signal of this ECU (Electrical Control Unit); The brake pedal angular signal that obtains when angular transducer is timing, and the feed liquor valve is opened; When the brake pedal angular signal of angular transducer acquisition was zero, the feed liquor valve cut out; The brake pedal angular signal that obtains when angular transducer is when negative, and the feed liquor valve cuts out, and returns the liquid valve and opens.
2. hydraulic assisted braking system of electric power automobile according to claim 1, it is characterized in that this hydraulic booster body comprises that a hydraulic cavities, one are arranged in this hydraulic cavities and boosting piston and a dust boot that is fixed on this hydraulic cavities that link to each other with brake push rod.
3. hydraulic assisted braking system of electric power automobile according to claim 1 and 2 is characterized in that, this braking feed tube links to each other with the energy storage tank of hydraulic power-assist steering system, and this braking liquid back pipe links to each other with the fluid reservoir of this hydraulic power-assist steering system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100894299A CN100402354C (en) | 2004-12-10 | 2004-12-10 | Hydraulic assisted braking system of electric power automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100894299A CN100402354C (en) | 2004-12-10 | 2004-12-10 | Hydraulic assisted braking system of electric power automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1785727A CN1785727A (en) | 2006-06-14 |
| CN100402354C true CN100402354C (en) | 2008-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100894299A Expired - Fee Related CN100402354C (en) | 2004-12-10 | 2004-12-10 | Hydraulic assisted braking system of electric power automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100402354C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863269A (en) * | 2010-06-18 | 2010-10-20 | 奇瑞汽车股份有限公司 | Electronic braking pedal |
| CN103738328A (en) * | 2013-12-31 | 2014-04-23 | 合肥德通电驱动***有限公司 | Brake device for electric vehicle |
| CN106347335B (en) * | 2016-10-11 | 2019-08-30 | 浙江吉利控股集团有限公司 | A kind of force aid system for vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030222497A1 (en) * | 2000-06-20 | 2003-12-04 | Wolfgang Fey | Electrohydraulic brake system for motor vehicles |
| DE10232054A1 (en) * | 2002-07-16 | 2004-02-05 | Robert Bosch Gmbh | Hydraulically operated brake unit for vehicle, comprising mechanism transmitting feed back of actual brake operation to driver |
| DE10235373A1 (en) * | 2002-08-02 | 2004-02-12 | Robert Bosch Gmbh | Vehicle brakes test method for testing an electro-hydraulic motor vehicle braking system tests for unreleased gas in a brake fluid |
| KR20040034152A (en) * | 2002-10-21 | 2004-04-28 | 현대자동차주식회사 | Auxiliary brake system in vehicle |
-
2004
- 2004-12-10 CN CNB2004100894299A patent/CN100402354C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030222497A1 (en) * | 2000-06-20 | 2003-12-04 | Wolfgang Fey | Electrohydraulic brake system for motor vehicles |
| DE10232054A1 (en) * | 2002-07-16 | 2004-02-05 | Robert Bosch Gmbh | Hydraulically operated brake unit for vehicle, comprising mechanism transmitting feed back of actual brake operation to driver |
| DE10235373A1 (en) * | 2002-08-02 | 2004-02-12 | Robert Bosch Gmbh | Vehicle brakes test method for testing an electro-hydraulic motor vehicle braking system tests for unreleased gas in a brake fluid |
| KR20040034152A (en) * | 2002-10-21 | 2004-04-28 | 현대자동차주식회사 | Auxiliary brake system in vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1785727A (en) | 2006-06-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080716 |