CN103496363A - Energy-saving braking system and method and electric automobile - Google Patents

Energy-saving braking system and method and electric automobile Download PDF

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Publication number
CN103496363A
CN103496363A CN201310435778.0A CN201310435778A CN103496363A CN 103496363 A CN103496363 A CN 103496363A CN 201310435778 A CN201310435778 A CN 201310435778A CN 103496363 A CN103496363 A CN 103496363A
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China
Prior art keywords
vacuum pump
storage tank
energy
magnetic clutch
vacuum
Prior art date
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Pending
Application number
CN201310435778.0A
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Chinese (zh)
Inventor
邹忠月
王丹
曹秉刚
李复活
陈辉
卫振廷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SANMENXIA SUDA TRANSPORTATION ENERGY SAVING TECHNOLOGY Co Ltd
Original Assignee
SANMENXIA SUDA TRANSPORTATION ENERGY SAVING TECHNOLOGY Co Ltd
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Application filed by SANMENXIA SUDA TRANSPORTATION ENERGY SAVING TECHNOLOGY Co Ltd filed Critical SANMENXIA SUDA TRANSPORTATION ENERGY SAVING TECHNOLOGY Co Ltd
Priority to CN201310435778.0A priority Critical patent/CN103496363A/en
Publication of CN103496363A publication Critical patent/CN103496363A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an energy-saving braking system, and further discloses an energy-saving braking method and an electric automobile using the system or the method. The energy-saving braking system comprises an electromagnetic clutch, a vacuum pump, a vacuum pipeline (3), a gas storage tank (4) and a vehicle control unit (8). The vacuum pump is connected with the gas storage tank (4) through the vacuum pipeline (3); the electromagnetic clutch is controlled by the automobile controller (8) to be in a connection or disconnection state and can drive the vacuum pump to rotate to vacuumize the gas storage tank (4); wheels drive the vacuum pump through the electromagnetic clutch to vacuumize the gas storage tank (4), the vacuum degree required by braking is achieved or supplemented, and accordingly power consumption of the electric vacuum pump is reduced, the energy capacity of a battery is saved and the energy recovery efficiency of the electric automobile is improved.

Description

A kind of energy-conservation brake system, method and electronlmobil
Technical field
The present invention relates to the electronlmobil field, especially a kind of energy-conservation brake system, method and electronlmobil.
Background technology
The insufficient driving range that electronlmobil once charges is one of key factor of its development of restriction always, so the saving electrokinetic cell energy of adopting an effective measure in the Vehicle Driving Cycle process is significant.Electronlmobil adopts electric vacuum pump that the brake power-assisted is provided, and in the Vehicle Driving Cycle process, especially in the urban district of crowded traffic, need to brake frequently, has consumed many energy contents of battery, has shortened the continual mileage of vehicle.
In view of this, people have designed energy conserving system according to the electronlmobil characteristics, and the energy during by car retardation or brake or descending is converted into electric energy by electrical generator electrokinetic cell is charged.Yet electrokinetic cell need could provide energy into electric vacuum pump after DC/DC changes, during conversion, energy has been subject to loss.In addition, be subject to the many factors such as the charge discharge efficiency of battery and battery charge condition, energy reclaims net effciency and is restricted.
Therefore, when the energy reclaimed is only charged for battery, energy recovery efficiency is not high, and the problems such as minimizing electric vacuum pump power consumption have to be solved.
Summary of the invention
The technical problem to be solved in the present invention has been to provide a kind of energy-conservation brake system, method and electronlmobil, has saved the electric energy of electric automobile power battery, has improved the efficiency that electric automobile energy reclaims.
The invention provides a kind of energy-conservation brake system, wherein, described system comprises magnetic clutch, vacuum pump, vacuum line 3, storage tank 4 and entire car controller 8, described vacuum pump is connected with described storage tank 4 by described vacuum line 3, described entire car controller 8 is controlled joint or the separation of described magnetic clutch, and described magnetic clutch can drive described vacuum pump running described storage tank 4 is vacuumized.
Further, described magnetic clutch comprises armature coil, and described armature coil one end is arranged on wheel, and an end is connected with described vacuum pump, and described magnetic clutch can drive described vacuum pump along with described wheel is synchronized with the movement.
Further, described system also comprises relay 9, and described entire car controller 8 is controlled joint or the separation of described magnetic clutch by described relay 9.
Further, the condition that described magnetic clutch engages is, the degree of vacuum in described storage tank 4 is less than threshold value, and Das Gaspedal is unclamped, and automobile gear level is greater than zero in D Drive and the speed of a motor vehicle.
Further, the condition that described magnetic clutch separates is that the degree of vacuum in storage tank reaches threshold value or Das Gaspedal is stepped on or automobile gear level is neutral gear or retreat shelves, or the speed of a motor vehicle is zero.
Further, described system comprises four magnetic clutchs, and the control signal of 8 pairs of described four magnetic clutchs of described entire car controller is identical.
Further, described system also comprises electric vacuum pump 6, and described vacuum pump and described electric vacuum pump 6 are coordinations, can to described storage tank 4, vacuumize respectively.
The present invention also provides a kind of energy-conservation brake method, wherein, vacuum pump is connected with storage tank 4 by vacuum line 3, entire car controller 8 is controlled joint or the separation of described magnetic clutch, when described magnetic clutch engages, described magnetic clutch drives described vacuum pump running, and described storage tank 4 is vacuumized.
Further, the step that described entire car controller 8 is controlled the joint of described magnetic clutch is,
S11, described entire car controller 8 detect the degree of vacuum of described storage tank 4, if degree of vacuum is less than threshold value, perform step S12, otherwise return to S11;
S12, described entire car controller 8 detect the vehicle gear signal, if when gear is D Drive, perform step S13, otherwise return to S11
S13, described entire car controller 8 detect vehicle speed signal, if the speed of a motor vehicle is greater than zero, performs step S14, otherwise return to S11;
S14, entire car controller 8 detect the accelerator pedal signal value, and contrast default accelerator pedal signal scope, judge that whether Das Gaspedal is releasing orientation, if releasing orientation performs step S15, otherwise returns to S11;
S15, magnetic clutch engage, otherwise return to S11.
Further, the step that described entire car controller 8 is controlled the separation of described magnetic clutch is,
S31, described entire car controller 8 detect the degree of vacuum of described storage tank 4, if degree of vacuum reaches threshold value, magnetic clutch separates, otherwise carry out S32;
S32, described entire car controller 8 detects the vehicle gear signal, if gear is when retreating shelves or neutral gear, magnetic clutch separates, otherwise execution S33;
S33, described entire car controller 8 detect vehicle speed signal, if the speed of a motor vehicle equals zero, magnetic clutch separates, otherwise carry out S34,
S34, entire car controller 8 detect the accelerator pedal signal value, and contrast default accelerator pedal signal scope, judge whether Das Gaspedal is releasing orientation, if not releasing orientation, magnetic clutch separates, otherwise returns to S31.
Further, described method also comprises,
S41, electric vacuum pump controller 7 or described entire car controller 8 detect the degree of vacuum of described storage tank 4, if degree of vacuum is less than threshold value, perform step S42, otherwise return to S41;
S42, open described electric vacuum pump 6, otherwise, S41 returned to.
Further, described entire car controller (8) is controlled described magnetic clutch by relay (9).
The present invention also provides a kind of energy-conservation electronlmobil, and wherein, described electronlmobil is used described energy-conservation brake system or method.
Compared with prior art, the present invention from a brand-new angle design energy-conservation brake system and method when electronlmobil deceleration or descending or brake, and the electronlmobil that uses described system or method.Wheel drives vacuum pump by magnetic clutch storage tank 4 is vacuumized, meet or the needed degree of vacuum of supplementary brake, thereby reduced the power consumption of electric vacuum pump, saved the energy content of battery, improved the energy recovery efficiency of electronlmobil, make the electronlmobil that uses described system or method can be in the situation that same electrokinetic cell, the time of travelling be more of a specified duration, and distance is farther.
The accompanying drawing explanation
Fig. 1 is the structural representation of energy-conservation brake system of the present invention;
Fig. 2 is the diagram of circuit of energy-conservation brake method of the present invention.
The specific embodiment
Thought of the present invention is: by a kind of energy-conservation brake system, method, come for electric automobile energy saving, described system comprises the parts such as magnetic clutch, vacuum pump, vacuum line 3, storage tank 4, entire car controller 8 and relay 9.Entire car controller 8 is controlled magnetic clutch by relay 9 and is engaged, wheel drives the vacuum pump running by magnetic clutch, through 3 pairs of storage tanks 4 of vacuum line, vacuumize again, required degree of vacuum when the kinetic transformation when deceleration or brake or the descending is for brake by vehicle by vacuum pump, thereby reduce the time of run of electric vacuum pump, save the energy content of battery, realize that energy reclaims.
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 shows the energy-conservation brake system of the embodiment of the present invention 1, in the present embodiment, energy-conservation brake system comprises (totally 4 of magnetic clutchs, be respectively 11,12,13,14), the part such as vacuum pump (totally 4 are respectively 21,22,23,24), vacuum line 3, storage tank 4, pressure sensor 5, electric vacuum pump 6, electric vacuum pump controller 7, entire car controller 8 and relay 9.Entire car controller 8 is controlled joint or the separation of magnetic clutch by relay 9, magnetic clutch 8 includes armature coil, described armature coil one end is arranged on wheel, one end is connected with vacuum pump, during vehicle operating, armature coil can be with wheel run-in synchronism, and drive vacuum pump run-in synchronism, then vacuumize required degree of vacuum when the kinetic transformation during by car retardation or brake or descending is for brake by vacuum pump through 3 pairs of storage tanks 4 of vacuum line.
Entire car controller 8 in the present embodiment is controlled magnetic clutch by relay 9 and is engaged, the condition of controlling is that the degree of vacuum in storage tank 4 is less than that threshold value, Das Gaspedal are unclamped, automobile gear level is that magnetic clutch could engage when D Drive and the speed of a motor vehicle are greater than zero condition and meet simultaneously.The signal that entire car controller 8 need detect comprises the degree of vacuum signal of accelerator pedal signal, automobile gear level signal, vehicle speed signal and storage tank 4 etc., and the signal of output comprises the control signal to electric vacuum pump controller 7 and relay 9.Entire car controller 8 detect the car key switch get to unlatching (ON) shelves and each several part self check all by the time, electric vacuum pump controller 7 is sent to power on signal, allow its normal operation.Send control signal by relay 9 closures when four conditions of entire car controller 8 judgements meet simultaneously, thereby magnetic clutch is engaged.The condition that magnetic clutch separates is, the condition that wheel does not drive vacuum pump is that the degree of vacuum in storage tank reaches that threshold value, Das Gaspedal are stepped on, automobile gear level is neutral gear or retreat shelves or the speed of a motor vehicle is zero, that is, four conditions meet one of them, and magnetic clutch separates.
In the present embodiment, the degree of vacuum in described storage tank 4 is to be detected by pressure sensor 5 by electric vacuum pump controller 7 or entire car controller 8, and the threshold value of degree of vacuum is according to different brake vacuum assist devices and difference.Described Das Gaspedal is unclamped and is referred in the Vehicle Driving Cycle process, state when chaufeur unclamps Das Gaspedal; Entire car controller 8, according to the signal value of Das Gaspedal, contrasts default accelerator pedal signal scope and can judge that whether it is in releasing orientation.Judge that the method whether Das Gaspedal is stepped on is to judge by contrasting default accelerator pedal signal scope equally.Automobile gear level signal and vehicle speed signal are detected by entire car controller 8.
In the present embodiment, the armature coil power supply voltage of magnetic clutch is+VCC, and this voltage is the voltage after electrokinetic cell is changed by DC/DC.
In the present embodiment, the entry condition of described electric vacuum pump 6 be electric vacuum pump 6 powered on and storage tank 4 in degree of vacuum be less than threshold value, control its unlatchings by electric vacuum pump controller 7 or entire car controller 8.The condition of closing of electric vacuum pump 6 is that the degree of vacuum in storage tank reaches threshold value, controls it by electric vacuum pump controller 7 or entire car controller 8 equally and closes.Vacuum pump and electric vacuum pump 6 that described wheel drives are coordinations, for guaranteeing brake security, in the situation that the two all reaches entry condition separately, can work simultaneously.The control signal that is arranged on four magnetic clutchs on wheel is identical, and the stability of vehicle operating is higher.Because wheel drives adding of vacuum pump, thereby reduce the time of run of electric vacuum pump, save the electrokinetic cell energy, realize that energy reclaims.
Fig. 2 shows the energy-conservation brake method diagram of circuit of the embodiment of the present invention 2, and the present embodiment realizes that energy-conservation brake method comprises the following steps:
The electronlmobil key switch get to beginning (ON) shelves and each several part self check all by the time, electric vacuum pump controller 7 is sent to power on signal, allow its normal operation.Next be the opening and closing condition of judgement electric vacuum pump 6 and vacuum pump.The opening and closing of its intermediate pump are to realize by the closure of entire car controller 8 control relays 9 and disconnection.
Step S21: the degree of vacuum that entire car controller 8 or electric vacuum pump controller 7 detect in storage tank 4 by pressure sensor 5 if degree of vacuum is less than threshold value, performs step S22 and step S23, if degree of vacuum, in threshold value, performs step S24.
Step S22: open electric vacuum pump 6 by electric vacuum pump controller 7, return to step S21 continuation detection degree of vacuum simultaneously and whether be less than threshold value.
Step S23: entire car controller 8 detects the vehicle gear signal, execution step S26 when gear is D Drive, otherwise execution step S25.
Step S24: close electric vacuum pump 6 and disconnect relay 9, stopping storage tank 4 is vacuumized, returning to step S21 simultaneously and judge whether degree of vacuum is less than threshold value.
Step S25: disconnect relay 9, magnetic clutch separates, and wheel does not drive the vacuum pump running, returns to step S21 simultaneously and judges whether degree of vacuum is less than threshold value.
Step S26: entire car controller 8 detects vehicle speed signal and judges whether the speed of a motor vehicle is zero, execution step S28 when the speed of a motor vehicle is greater than zero, otherwise execution step S27.
Step S27: disconnect relay 9, magnetic clutch separates, and wheel does not drive the vacuum pump running, returns to step S21 simultaneously and judges whether degree of vacuum is less than threshold value.
Step S28: entire car controller 8 detects the accelerator pedal signal values, and contrasts default accelerator pedal signal scope and can judge whether it is releasing orientation.If Das Gaspedal performs step S30 in releasing orientation, otherwise execution step S29.
Step S29: disconnect relay 9, magnetic clutch separates, and wheel does not drive the vacuum pump running, returns to step S21 simultaneously and judges whether degree of vacuum is less than threshold value.
Step S30: closing relay 9, wheel drives the vacuum pump running, and storage tank 4 is vacuumized, and the part kinetic transformation is the degree of vacuum that brake needs, and realizes that energy reclaims, and returns to step S21 simultaneously and judges whether degree of vacuum is less than threshold value.
The wheel of above-described embodiment drives by magnetic clutch the method that vacuum pump turns round, storage tank 4 is vacuumized, and has reduced the work-hours of electric vacuum pump, saves the energy of electrokinetic cell, has realized the energy recovery, has reached the purpose that improves energy recovery efficiency.
In the present embodiment, the degree of vacuum in described storage tank 4 is detected by pressure sensor 5 by electric vacuum pump controller 7 or entire car controller 8, and the threshold value of degree of vacuum is according to different brake vacuum assist devices and difference.Described Das Gaspedal is unclamped and is referred in the Vehicle Driving Cycle process, state when chaufeur unclamps Das Gaspedal; Entire car controller 8, according to the signal value of Das Gaspedal, contrasts default accelerator pedal signal scope and can judge that whether it is in releasing orientation.Judge that the method whether Das Gaspedal is stepped on is to judge by contrasting default accelerator pedal signal scope equally.Automobile gear level signal and vehicle speed signal are detected by entire car controller 8.
Described vacuum pump and electric vacuum pump 6 are coordinations, for guaranteeing brake security, in the situation that the two all reaches entry condition separately, can work simultaneously.The control signal that is arranged on four magnetic clutchs on wheel is identical, because vacuum pump is driven by wheel, thus the time of run of minimizing electric vacuum pump.Save the electrokinetic cell energy, realize that energy reclaims.
In closure or openness condition about vacuum pump, four conditions read the sequencing indistinction, but while using, must be defined as wherein a kind of, so to any on result without impact.Below provided a kind of embodiment, as follows:
The step that described entire car controller 8 is controlled the joint of described magnetic clutch is,
S11, described entire car controller 8 detect the degree of vacuum of described storage tank 4, if degree of vacuum is less than threshold value, perform step S12, otherwise return to S11;
S12, described entire car controller 8 detect the vehicle gear signal, if when gear is D Drive, perform step S13, otherwise return to S11;
S13, described entire car controller 8 detect vehicle speed signal, if the speed of a motor vehicle is greater than zero, performs step S14, otherwise return to S11;
S14, entire car controller 8 detect the accelerator pedal signal value, and contrast default accelerator pedal signal scope, judge that whether Das Gaspedal is releasing orientation, if releasing orientation performs step S15, otherwise returns to S11;
S15, magnetic clutch engage, otherwise return to S11.
Provide again a kind of embodiment, as follows:
The step that described entire car controller (8) is controlled the disconnection of described magnetic clutch is,
S31, described entire car controller (8) detect the degree of vacuum of described storage tank (4), if degree of vacuum reaches threshold value, disconnect magnetic clutch, otherwise carry out S32;
S32, described entire car controller (8) detect the vehicle gear signal, if gear when retreating shelves or neutral gear, disconnects magnetic clutch, otherwise execution S33;
S33, described entire car controller (8) detect vehicle speed signal, if the speed of a motor vehicle equals zero, disconnect magnetic clutch, otherwise carry out S34,
S34, entire car controller (8) detect the accelerator pedal signal value, and contrast default accelerator pedal signal scope, judge that whether Das Gaspedal is releasing orientation, if not releasing orientation disconnects magnetic clutch, otherwise returns to S31.
Embodiment 3, for application energy-conservation brake system of the present invention or the electronlmobil of method, is applied to electronlmobil by described embodiment 1 or embodiment 2, the effect that described electronlmobil also can reach that described system or method realize is energy-conservation, reclaim kinetic energy.
Described embodiment 1, embodiment 2 and embodiment 3, be only preferably embodiment of the present invention, not the present invention done to any pro forma restriction, and protection scope of the present invention is not limited to this.Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, within making various distortion, supplement or replace and all belonging to protection scope of the present invention.

Claims (8)

1. an energy-conservation brake system, it is characterized in that: described system comprises magnetic clutch, vacuum pump, vacuum line (3), storage tank (4) and entire car controller (8), described vacuum pump is connected with described storage tank (4) by described vacuum line (3), described entire car controller (8) is controlled adhesive or the disconnection of described magnetic clutch, and described magnetic clutch can drive described vacuum pump running described storage tank (4) is vacuumized.
2. system according to claim 1, it is characterized in that: described magnetic clutch comprises armature coil, described armature coil is arranged on wheel, and described magnetic clutch is connected with described vacuum pump by described armature coil, and described vacuum pump can be synchronized with the movement along with described wheel.
3. system according to claim 1 and 2, it is characterized in that: described system also comprises relay (9), described entire car controller (8) is controlled adhesive or the disconnection of described magnetic clutch by described relay (9).
4. system according to claim 1 is characterized in that: the condition of described magnetic clutch adhesive is, the degree of vacuum in described storage tank (4) is less than threshold value, and Das Gaspedal is unclamped, and automobile gear level is greater than zero in D Drive and the speed of a motor vehicle.
5. system according to claim 1 is characterized in that: the condition that described magnetic clutch disconnects is that the degree of vacuum in storage tank reaches threshold value or Das Gaspedal is stepped on, automobile gear level is neutral gear or retreat shelves, or the speed of a motor vehicle is zero.
6. system according to claim 1, it is characterized in that: described system comprises four magnetic clutchs (11,12,13,14), and described entire car controller (8) is identical to the control signal of described four magnetic clutchs.
7. system according to claim 1, it is characterized in that: described system also comprises electric vacuum pump (6), described vacuum pump and described electric vacuum pump (6) they are coordinations, can to described storage tank (4), vacuumize respectively.
8. an energy-conservation electronlmobil, is characterized in that, described electronlmobil right to use requires 1 to 7 arbitrary described brake system.
CN201310435778.0A 2013-09-24 2013-09-24 Energy-saving braking system and method and electric automobile Pending CN103496363A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134518A (en) * 2015-08-25 2015-12-09 青岛理工大学 Vehicle gravitational potential energy and no-load surplus energy collecting device
CN106080576A (en) * 2016-06-07 2016-11-09 上汽通用汽车有限公司 Evacuation and the method for filling and anti-blocking brake system
CN111791860A (en) * 2020-07-01 2020-10-20 神龙汽车有限公司 Electric vacuum pump control method of electric manual transmission automobile

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CN201863719U (en) * 2010-09-15 2011-06-15 陈安荣 Electric vehicle with heating and cooling air conditioner, charger and vacuum brake device
CN102923078A (en) * 2012-11-06 2013-02-13 潍柴动力股份有限公司 Automobile air compression device and control method
CN203472840U (en) * 2013-09-24 2014-03-12 三门峡速达交通节能科技股份有限公司 Energy-saving braking system and electric automobile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201863719U (en) * 2010-09-15 2011-06-15 陈安荣 Electric vehicle with heating and cooling air conditioner, charger and vacuum brake device
CN102069788A (en) * 2010-10-15 2011-05-25 北京工业大学 Pneumatic vehicular braking energy recovery and recycling device and control method
CN102923078A (en) * 2012-11-06 2013-02-13 潍柴动力股份有限公司 Automobile air compression device and control method
CN203472840U (en) * 2013-09-24 2014-03-12 三门峡速达交通节能科技股份有限公司 Energy-saving braking system and electric automobile

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134518A (en) * 2015-08-25 2015-12-09 青岛理工大学 Vehicle gravitational potential energy and no-load surplus energy collecting device
CN105134518B (en) * 2015-08-25 2017-07-28 青岛理工大学 A kind of vehicle gravity force potential energy and unloaded complementary energy collection device
CN106080576A (en) * 2016-06-07 2016-11-09 上汽通用汽车有限公司 Evacuation and the method for filling and anti-blocking brake system
CN106080576B (en) * 2016-06-07 2019-12-31 上汽通用汽车有限公司 Vacuumizing and filling method and anti-lock braking system
CN111791860A (en) * 2020-07-01 2020-10-20 神龙汽车有限公司 Electric vacuum pump control method of electric manual transmission automobile
CN111791860B (en) * 2020-07-01 2021-08-13 神龙汽车有限公司 Electric vacuum pump control method of electric manual transmission automobile

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