CN100551735C - Be used for ensureing the device of electric parking brake system safety with regenerative brake function - Google Patents
Be used for ensureing the device of electric parking brake system safety with regenerative brake function Download PDFInfo
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- CN100551735C CN100551735C CNB2007101181150A CN200710118115A CN100551735C CN 100551735 C CN100551735 C CN 100551735C CN B2007101181150 A CNB2007101181150 A CN B2007101181150A CN 200710118115 A CN200710118115 A CN 200710118115A CN 100551735 C CN100551735 C CN 100551735C
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
Be used for ensureing the device of electric parking brake system safety, belong to brake device for car fender guard technical field with regenerative brake function.This device comprises regenerative braking trouble lamp (20), relay (21), travel switch (22), braking mode select switch (23), regenerative braking pressure regulating valve (16), brake controller (1); Travel switch (22) is installed in electric parking brake system pedal bottom, and with the control phase failure company of relay (21), relay is connected between regenerative braking pressure regulating valve (16) and the brake controller (1); Controller is judged brake pedal position, when it enters the regenerative braking pattern during less than 80% aperture, carries out regenerative braking until parking; During this period, if wheel lockup or pedal aperture take place greater than 80% then carry out the braking mode conversion.The big limit of the present invention ground reclaims braking energy, has improved the economy of car load, prevents wheel lockup, improves the reliability of brake system.
Description
Technical field
The present invention relates to have the safety convenience instrument and the control method thereof of the brake system of car of braking energy feedback function, belong to brake device for car fender guard technical field.
Background technology
The automobile brake energy regeneration techniques is for further reduction automobile energy consumption and discharging, and it is significant to alleviate world energy sources crisis and ambient pressure.The regenerative brake technology will widespread use on energy-saving automobile, and this comprises hybrid-power electric vehicle, pure electric automobile and fuel electric car automobile.
Automobile with regenerative brake function, its brake system has only the automobile of traditional braking system, on brake system structure and braking mechanism variation has taken place, and automobile brake effect and safety are exerted an influence.For reclaiming braking energy to greatest extent, it is complicated that brake system becomes, and regenerative braking is by the deboost phase is utilized more.
The brake safe sexual needs are protected again, brake system develops to composite braking system, patent related to the present invention for example: " pneumatically braking anti-lock brake system of mixed powered automobile " its application number of Jilin University is 200610017245.0, " being used for controlling the method and apparatus of battery-driven car regenerative brake " its application number of Hyundai Motor Corporation is 200410070893.3, " control method that braking energy reclaims during the hybrid vehicle descending " its application number of China No.1 Automobile Group Co is 200510016980.5." pneumatically braking anti-lock brake system of mixed powered automobile " of Jilin University designed one and has been enclosed within the atmospheric pressure compensating brake equipment of motor can't regenerative braking the time, increased by a cover atmospheric pressure compensating subsystem on the braking gas circuit again, and control method.Safety when " being used for controlling the method and apparatus of battery-driven car regenerative brake " of Hyundai Motor Corporation considered to carry out regenerative braking when automobile turning has designed the control corresponding algorithm.Automobile carries out regenerative braking to " control method that braking energy reclaims during the hybrid vehicle descending " of China No.1 Automobile Group Co automatically when having considered descending, and the driver need not operated, and alleviates driving fatigue.
The present invention and the above patent are had any different, and less to the brake system change when guaranteeing automotive safety, the function of realization is more, is a kind of scheme of full-scope safeguards composite braking system safety.
Summary of the invention
The present invention considers the safety and the reliability of composite braking system comprehensively, at composite braking system, design safe redundant apparatus, utilize the particularity of this composite braking system structure, safety measure, the treatment measures after fault takes place when having designed safety measure, the emergency braking of regenerative braking failure conditions at series connection type brake system.
The present invention is used for ensureing the device of the electric parking brake system safety with regenerative brake function, this device comprises regenerative braking trouble lamp 20, relay 21, travel switch 22, braking mode select switch 23, regenerative braking pressure regulating valve 16, brake controller 1; Travel switch 22 is installed in battery-driven car brake pedal bottom, links to each other with the control end of relay 21, and relay is connected between regenerative braking pressure regulating valve 16 and the brake controller 1; Regenerative braking trouble lamp 20 links to each other with brake controller 1; Braking mode select switch 23 is installed near the chaufeur instrument, connects with the power supply of brake controller 1.
Referring to Fig. 1, working process is as follows:
When the driver need carry out emergency brake or need big braking force, the driver steps on brake pedal and surpasses a certain position, aperture as 80%, this moment, safe redundant apparatus played a role, travel switch 22 actions, cutin relay 21, the power supply of cut-out regenerative braking pressure regulating valve 16, make that 16 pairs of brake pipings of regenerative braking pressure regulating valve are inoperative, the brake piping standard-sized sheet; Brake controller 1 obtains the signal of pedal position sensor 15 simultaneously, forbidding regenerative braking power; Braking afterwards and conventional brake are always; If this car is equipped with ABS, when wheel lockup took place, ABS system start-up and work were stopped until automotive safety.
When regenerative braking was lost efficacy, brake controller 1 obtains the status signal of electric machine controller 4 feedbacks, the signal of brake pedal displacement pickup 15, regenerative braking pressure regulating valve 16 signals, judge the incident that motor lost efficacy, control regenerative braking pressure regulating valve 16 afterwards and recover the unimpeded of brake piping, control electric machine controller 4, the forbidding regenerative braking, compression air brake power will compensate current demand braking force simultaneously, the brake pressure signal that feeds back by pressure sensor 19, judge that can charging pressure produce the brake-pressure of corresponding pedal position, carries out closed loop adjustment and recover fully until braking force.
When regenerative braking was lost efficacy, another kind of solution is: demarcated cooresponding car load braking force with the brake pedal aperture, this corresponding relation comprise car load only with the corresponding relation of traditional braking system works, only with corresponding relation and two kinds of corresponding relations that braking is used simultaneously of regenerative braking, controller forbidding regenerative braking when motor lost efficacy, control feedback pressure regulating valve is opened fast, and the car load braking force is got back to cooresponding pedal aperture rapidly; On the basis of not changing original series connection type brake system, the problem when having solved electric feedback system and lost efficacy by control method does not need the driver to change original braking intention simultaneously and just can finish automatically, sends fault alarm to the driver afterwards.
Treatment measures after fault takes place, after the situation that regenerative braking was lost efficacy took place, brake controller 1 will be forbidden regenerative braking, controls regenerative braking pressure regulating valve 16 simultaneously and makes brake piping unimpeded; The driver can see regenerative braking trouble lamp 20 ACTIVE CONTROL braking mode switch 23 afterwards simultaneously, and the power supply of forbidding brake controller 1 and cut-out regenerative braking pressure regulating valve 16 can carry out identical control when the brake controller et out of order.
The safeguard of ABS function, the easy phenomenon that wheel lockup takes place when emergency braking, the safety measure during emergency braking has been done corresponding processing; If running car is when hanging down attached road surface, automobile promptly has the trend of locking under the little situation of braking force, this moment, brake controller obtained pedal position signal, abs controller signal, carry out analysis and judgement, if little (being lower than a certain aperture) the wheel locking of pedal position aperture is then judged automobile at low attached road traveling, brake controller 1 carries out the switching of braking mode, the control regenerative braking transforms to traditional braking, forbids the regenerative braking function afterwards up to braking beginning next time.Simultaneously, the driver can ACTIVE CONTROL braking mode switch 23, closes the regenerative braking function, recovers traditional braking systemic-function and ABS function, guarantees that automobile is in the low ground-surface safety of adhering to.
The invention still further relates to a kind of method that is used for ensureing the electric parking brake system safety with regenerative brake function, this method is achieved in that
With reference to Fig. 3, the driver steps on brake pedal, braking beginning, and controller is judged brake pedal position, when it enters the regenerative braking pattern during less than certain aperture (as 80%), judgment device is normal, carries out regenerative braking until parking.During this period, if wheel lockup takes place, perhaps pedal aperture excessive (greater than 80%) is then carried out the conversion of braking mode, progressively cancels regenerative braking, recovers compression air brake, carries out the ABS Working Status Monitoring simultaneously.During regenerative braking, if taking place, the regenerative braking that motor lost efficacy or other reasons produces lost efficacy, then increase compression air brake power fast, recover total braking force, this moment, the driver can not change original braking intention, until emergency.
The braking beginning, the driver is emergency braking if desired, then enters the emergency braking pattern, and have only compression air brake work this moment, and ABS monitors.Simultaneously, safe redundant apparatus work this moment guarantees that regenerative braking does not conflict with compression air brake, until emergency.
The present invention promptly can co-operative control energy recovery subsystem and braking anti-lock subsystem, braking force be can when motor lost efficacy, compensate again fast and brake feel and safety (not changing the original braking intention of chaufeur) guaranteed, braking after electrical fault takes place can be forbidden the regenerative braking function, recovers air pressure or hydraulic brake system; The driver can select braking mode when the brake controller fault; The emergency brake and the ABS function of fast original air pressure of quick-recovery or hydraulic brake system under the situation of emergency braking.Can guarantee to reclaim braking energy to greatest extent, improve the economy of car load, prevent wheel lockup, improve the reliability of brake system.
Description of drawings
Fig. 1 illustrates example one, uses a typical scenario of the present invention.
Fig. 2 illustrates safe redundant apparatus and braking mode selecting arrangement.
Fig. 3 is a typical control method flow diagram.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
One of application example of the present invention, its composite braking system structural representation as shown in Figure 1, this composite braking system for electric automobile comprises pneumatic braking sub system and reclaims the braking subsystem.Pneumatic braking sub system comprises brake pedal 14 and is connected with storage tank 12, air compressor 11 as pressure holding with its pressure-gradient control valve that links 13, pressure-gradient control valve 13 the right, pressure-gradient control valve 13 left sides are connected with abs control valve 18 by pressure-modulation valve 16, and ABS parts group comprises abs controller 9, wheel speed sensors 10, abs control valve 18 and accident warning device 8; Reclaim brake system comprise have the motor 5 that reclaims braking function, motor 5 by change-speed box 6 be connected with axletree with main reduction gear 7, by electric machine controller 4 connection storage batterys 2 and the brake controller 1 that electric machine controller 4 sent control command.
In car running process, pressurized air remains on a constant compression force scope in the storage tank 12 of the pressure-keeping mechanism by comprising air compressor 11.Brake pedal 14 is stepped on, and the pressurized air in the storage tank 12 enters and respectively takes turns drg by the pressure control of pressure-gradient control valve 13, pressure-modulation valve 16 and abs control valve 18, produces friction brake force.Wherein, pressure-gradient control valve 13 is subjected to the control of brake pedal 14, and pressure-modulation valve 16 is subjected to the control of brake controller 1, and abs control valve 18 is subjected to the control of abs controller 9.Simultaneously, brake controller 1 assigns torque command for electric machine controller 4 according to signals such as brake pedal jaw opening sensor 15 signals, storage battery 2 states, bus states 3, and the motor braking torque is delivered on the drive wheel (trailing wheel) by change-speed box 6, main reduction gear 7.
What above-mentioned pressure-gradient control valve adopted is binary channel machinery pressure regulating valve, according to the difference of pressure before and after the brake-pedal travel decision valve, thus the pressure of control front and back wheel.
The processing of regenerative braking failure conditions, obtain status signal, brake pedal jaw opening sensor 15 signals, pressure-modulation valve 16 signals of motor controller 4 feedbacks by brake controller, judge the incident that motor lost efficacy, co-operative control pressure-modulation valve 16, electric machine controller 4, the forbidding regenerative braking, complemental air compacting power, the brake pressure signal that feeds back by pressure sensor 19, judge that can charging pressure produce the brake-pressure of corresponding pedal position, carries out closed loop adjustment and recover fully until braking force.Described pressure sensor 19 is contained on drive wheel and the non-driving wheel, also can select as required to install.
Another scheme of handling this situation is, demarcated cooresponding car load braking force with the brake pedal aperture, this corresponding relation comprises car load corresponding relation, corresponding relation and two kinds of corresponding relations that braking is used simultaneously with the regenerative braking braking with the traditional braking system works, brake controller 1 forbidding regenerative braking when motor lost efficacy, control feedback pressure regulating valve 16 is opened fast, and the car load braking force is got back to cooresponding pedal aperture rapidly.On the basis of not changing original series connection type brake system, the problem when having solved electric feedback system and lost efficacy by control method does not need the driver to change original braking intention simultaneously and just can finish automatically, sends fault alarm to the driver afterwards.
Safety measure during emergency braking, when the driver need carry out emergency brake or need big braking force, motor to lose efficacy the situation that the speech major failure takes place for situation that brake controller simultaneously fails to handle and brake controller 1, the driver steps on brake pedal greater than a certain aperture position, aperture as 80%, this moment, safe redundant apparatus played a role, travel switch 22 powers on for relay 21, cuts off regenerative braking pressure regulating valve 16, makes the brake piping standard-sized sheet; Brake controller 1 obtains pedal position signal forbidding regenerative braking power simultaneously.When if wheel lockup takes place, ABS system start-up and work; If need make rate of braking become bigger, can not forbid regenerative braking power.
Treatment measures after fault takes place, after the situation that regenerative braking was lost efficacy took place, brake controller will be forbidden regenerative braking, and the regenerative braking pressure regulating valve is often opened.The driver can be forbidden brake controller 1 and open regenerative braking pressure regulating valve 16 at ACTIVE CONTROL braking mode switch 23 after the signal of seeing regenerative braking trouble lamp 20 simultaneously, can carry out identical control when brake controller 1 et out of order.
The safeguard of ABS function, the easy phenomenon that wheel lockup takes place when emergency braking, corresponding processing method is being handled; If running car is when hanging down attached road surface, automobile promptly has the trend of locking under the little situation of braking force, this moment, brake controller obtained brake pedal jaw opening sensor 15 signals, ABS control system device signal, carry out analysis and judgement, if little (being lower than a certain aperture) the ABS locking of brake pedal jaw opening sensor 15 signals, judge that then automobile is at low attached road traveling, brake controller carries out the switching of braking mode, the control regenerative braking transforms to traditional braking, forbids regenerative braking afterwards up to braking beginning next time
Claims (2)
1, is used for ensureing the device of electric parking brake system safety with regenerative brake function, it is characterized in that, this device comprises regenerative braking trouble lamp (20), relay (21), travel switch (22), braking mode select switch (23), regenerative braking pressure regulating valve (16), brake controller (1);
Travel switch (22) is installed in electric parking brake system pedal bottom, links to each other with the control end of relay (21), and relay is connected between regenerative braking pressure regulating valve (16) and the brake controller (1); Regenerative braking trouble lamp (20) links to each other with brake controller (1); Braking mode select switch (23) is installed near the chaufeur instrument, connects with the power supply of brake controller (1).
2, a kind of method that is used for ensureing electric parking brake system safety with regenerative brake function, it is characterized in that described method is: brake controller is judged brake pedal position, when it enters the regenerative braking pattern during less than 80% aperture, judgment device is normal, carries out regenerative braking until parking; During this period, if wheel lockup takes place, perhaps the pedal aperture is then carried out the conversion of braking mode greater than 80%, progressively cancels regenerative braking, recovers compression air brake, carries out the ABS Working Status Monitoring simultaneously; During regenerative braking, if taking place, the regenerative braking that motor lost efficacy or other reasons produces lost efficacy, then recover total braking force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101181150A CN100551735C (en) | 2007-06-29 | 2007-06-29 | Be used for ensureing the device of electric parking brake system safety with regenerative brake function |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101181150A CN100551735C (en) | 2007-06-29 | 2007-06-29 | Be used for ensureing the device of electric parking brake system safety with regenerative brake function |
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| CN101073991A CN101073991A (en) | 2007-11-21 |
| CN100551735C true CN100551735C (en) | 2009-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582608A (en) * | 2012-02-29 | 2012-07-18 | 湖南南车时代电动汽车股份有限公司 | Emergency braking electrical control device of purely electric automobile |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407179B (en) * | 2008-11-28 | 2011-01-26 | 清华大学 | Composite braking system having anti-locking brake function and control method |
| CN102582447B (en) * | 2012-02-13 | 2014-04-30 | 北京长城华冠汽车技术开发有限公司 | Device capable of adjusting recovery proportion of braking force of electric vehicle and method therefor |
| CN106627032B (en) * | 2016-10-21 | 2023-04-14 | 林凯强 | Air-conditioning compressor for vehicle Intelligent controller |
| CN108859778B (en) * | 2017-05-09 | 2020-09-01 | 郑州宇通客车股份有限公司 | New energy automobile regenerative braking control method and device |
| CN109421681A (en) * | 2017-08-22 | 2019-03-05 | 郑州宇通客车股份有限公司 | A kind of new-energy automobile brake gear and its control method |
| CN107972655B (en) * | 2017-11-14 | 2019-08-27 | 潍柴动力股份有限公司 | For the relay valve of electric car, braking system and braking method |
| CN108891400A (en) * | 2018-08-23 | 2018-11-27 | 东风华神汽车有限公司 | New-energy automobile air-pressure brake energy feedback piston type blocks control valve |
| CN108891399A (en) * | 2018-08-23 | 2018-11-27 | 东风华神汽车有限公司 | New-energy automobile air-pressure brake energy feedback diaphragm type blocks control valve |
| CN109305153A (en) * | 2018-09-28 | 2019-02-05 | 上汽通用五菱汽车股份有限公司 | Electric vehicle with braking control system |
| CN112440750A (en) * | 2019-08-28 | 2021-03-05 | 北京新能源汽车股份有限公司 | Control method and device for energy recovery working condition and electric automobile |
| CN113212172A (en) * | 2021-05-10 | 2021-08-06 | 宝能(广州)汽车研究院有限公司 | Energy feedback control method and device for electric automobile, medium and electronic equipment |
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2007
- 2007-06-29 CN CNB2007101181150A patent/CN100551735C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 混合动力电动汽车研究开发及前景展望. 岳东鹏，郝志勇，张俊智.拖拉机与农用运输车，第2004卷第2期. 2004 |
| 混合动力电动汽车研究开发及前景展望. 岳东鹏，郝志勇，张俊智.拖拉机与农用运输车，第2004卷第2期. 2004 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582608A (en) * | 2012-02-29 | 2012-07-18 | 湖南南车时代电动汽车股份有限公司 | Emergency braking electrical control device of purely electric automobile |
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| CN101073991A (en) | 2007-11-21 |
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