CN101941423A - Energy recovery type electric car brake control method - Google Patents
Energy recovery type electric car brake control method Download PDFInfo
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- CN101941423A CN101941423A CN2010102595564A CN201010259556A CN101941423A CN 101941423 A CN101941423 A CN 101941423A CN 2010102595564 A CN2010102595564 A CN 2010102595564A CN 201010259556 A CN201010259556 A CN 201010259556A CN 101941423 A CN101941423 A CN 101941423A
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Abstract
The invention discloses an energy recovery type electric car brake control method and involves a brake pedal mechanism, a car controller, a battery, an electric motor, a transmission system and a mechanical braking system, wherein the brake pedal mechanism contains a first braking distance and a second braking distance; and the electric braking process is performed during the first braking distance, and the mechanical braking system is operated along with the electric braking process during the second braking distance. By using the method of the invention, when a car brakes, the maximum braking energy can be recycled, and the braking safety of the car can be ensured.
Description
[technical field]
The present invention relates to automobile brake control method, particularly a kind of have braking energy and reclaim the hybrid power of ability or the brake control method of electronlmobil.
[background technology]
At present, because the requirement of energy-saving and emission-reduction is more and more stricter, automobile energy-saving reduces discharging also increasingly stringent of standard.In order to reduce the energy consumption of vehicle, developed the numerous new vehicle system that comprises hybrid vehicle, electronlmobil.And all existing the energy storing device with reversible variation and electrical motor and the controller thereof that can realize mechanical energy, electric energy bi-directional drive function on these vehicles, this just reclaims for absorbing the energy that loses in the car brakeing process, utilization provides possibility again.The electronlmobil control of braking that comprises hybrid vehicle at present be on original brake system by to the collection of brake system signal as controlled variable, entire car controller is determined best electric braking power according to the state that comprises miscellaneous parts such as battery again, the motor controller controls drive motor is realized negative torque output according to the power or the torque request of vehicle control device, mechanical energy is converted to electric energy, be stored in the battery homenergic memory storage, realize the recovery of braking energy.The similar control method is included in chaufeur when stepping on brake pedal, when mechanical braking sytem begins to produce brake action, entire car controller is gathered the pressure signal of the pipeline in the brake system or the displacement signal of brake pedal, calculate best electric braking power, command the negative level of torque of motor controller controls drive motor, realized the recovery function of portion of energy.But obviously this method mechanical braking and electric braking are to act on simultaneously on the vehicle, and mechanical braking sytem has absorbed the brake snub energy, and this part braking energy finally is to be converted to thermal loss to have fallen, and has influenced callable total braking energy.
[summary of the invention]
The technical problem to be solved in the present invention provides a kind of the have hybrid power of braking energy recovery ability or the brake control method of electronlmobil.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of electronlmobil brake control method with energy recovery, comprise brake treadle mechanism, vehicle control device, battery, motor, driving system and mechanical braking sytem, brake treadle mechanism comprises first braking distance and second braking distance, and first braking distance only has electric braking to have an effect; Second braking distance is that mechanical braking sytem and electric braking are had an effect simultaneously.
More perfect is, brake treadle mechanism comprises pedal, push rod and pull back spring, and pedal comprises the pedal signal output unit, and the displacement of pedal is from free state position S0, through beginning contact position S1 up to pedal hard-over position Smax with push rod.
More perfect is, the corresponding pedal displacement of first braking distance is from S0 to S1, and pedal does not touch push rod, so mechanical braking is inoperative, only has an effect by pedal signal output unit start signal output electric braking; The corresponding pedal displacement of second braking distance is from S1 to Smax, and pedal touches and press down push rod, starts mechanical braking up to producing the maximum machine B.P., and pedal signal output unit output signal keeps electric braking to work simultaneously.
More perfect is, vehicle control device respectively with the pedal signal output unit, electric machine controller and battery are electrically connected, the maximum brake power that the vehicle miscellaneous part status informations such as signal combination battery that vehicle control device is exported the pedal signal output unit that receives calculate multiply by a coefficient relevant with S, obtain current best B.P. or brake-force transmission and give electric machine controller, the negative torque of electric machine controller drive motor output, vehicle mechanical can be that kinetic energy passes through wheel, driving system is delivered to motor, convert kinetic energy to power storage in battery, said process is through the whole braking distance that comprises first braking distance and second braking distance.
More perfect is that the pedal signal output unit is the position transduser of continuous signal output
More perfect is that the pedal signal output unit is a brake switch.
The invention has the beneficial effects as follows, when car brakeing, reclaim the energy of braking to greatest extent, guarantee vehicle braked safety simultaneously.Be exactly in brief in the traditional braking system, with brake pedal before mechanical braking begins the generation effect, one section suitable idle travel is set, bring into use motor to brake in this idle travel scope, but mechanical braking does not produce effect, simultaneously according to pedal displacement, the B.P. or the braking torque size of drive motor are set, before pedal position reaches mechanical braking sytem and begins the generation effect, just that electric braking is almost maximum absorbed power is brought into play, after mechanical braking begins the generation effect, electric braking continues to play a role and keep maximum braking absorbed power, in having the vehicle of anti-blocking brake system, when receiving the anti-lock signal, motor torque is according to the interrupted output of antiblock device instruction braking torque.
Because the damped condition that vehicle often uses, its braking force only has the 30-40% of maximum braking force, if under common braking condition, only there is electric braking just can be recovered to maximum braking energys in action, the life-span that can also improve the mechanical braking sytem part greatly simultaneously.
[description of drawings]
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the connection diagram of the embodiment of the invention.
Among Fig. 1,1-pedal, 2-drive wheel, 3-driving system, 4-position transduser.
Fig. 2 is the structural representation of brake treadle mechanism.
Among Fig. 2,10-pedal, 11-push rod, 12-pull back spring, 13-position transduser, 14-master brake cylinder.
[specific embodiment]
Electronlmobil brake control method as shown in Figure 1 with energy recovery, brake treadle mechanism comprises pedal 1 and position transduser 4, master brake cylinder is connected with brake cylinder on four drive wheels, position transduser 4 is contained in the appropriate location part of pedal gear, the output signal that position transduser 4 produces during with pedal displacement is connected to vehicle control device, vehicle control device connects battery and electric machine controller respectively, the electric machine controller drive motor, and motor is by driving system 3 and drive wheel mechanical connection.
In brake treadle mechanism shown in Figure 2, comprise pedal 10, push rod 11, pull back spring 12 and master brake cylinder.Wherein the displacement of pedal 10 is a reference position by following flag settings: S0, also is pedal free state position, is guaranteed can not get back to this position when pedal 10 stresses by pull back spring 12; The position of S1 is that pedal 10 begins to contact push rod 11 as shown in phantom in Figure 2, begins to produce the position of mechanical braking effect; The Smax position is the range or the angle position of pedal 10 shown in Fig. 2 dotted line, and when pedal 10 arrived this position, electric braking device and mechanical brake device all reached maximum braking force or B.P..In the whole braking distance that with the pedal displacement is sign, pedal displacement is first braking distance from S0 to S1, is second braking distance from S1 to Smax.
In first braking distance, as shown in Figure 2, be operated to the S1 position from reference position S0 at pedal 10, pedal does not touch 11 push rods, be that mechanical braking sytem is not worked, as shown in Figure 1, this moment is position sensor 13 external output signals only, pass to vehicle control device, vehicle control device receives maximum brake power or the braking force that calculates according to vehicle miscellaneous part status informations such as batteries behind the signal S and passes to electric machine controller, the negative torque of electric machine controller drive motor output is generated electricity, vehicle mechanical can be that kinetic energy is delivered to motor by wheel 2 and driving system 3 thus, convert kinetic energy to power storage in battery, in first braking distance, electric braking is only arranged in action.
As shown in Figure 2, when pedal 10 is continued to step on, when meeting and exceeding the S1 position, indicate that second braking distance begins, pedal 10 touches and presses down push rod 11, push rod 11 promotes master brake cylinder, mechanical braking sytem begins to work, as shown in Figure 1, position transduser 13 continues output current position signal S to vehicle control device simultaneously, vehicle control device receives behind the signal S equally maximum brake power or the braking force that calculates according to vehicle miscellaneous part status informations such as batteries and passes to electric machine controller, the negative torque of electric machine controller drive motor output is generated electricity, vehicle mechanical can be that kinetic energy is delivered to motor by wheel 2 and driving system 3 thus, converts kinetic energy to power storage in battery.When pedal displacement arrived Smax, pedal displacement reached range, also is the end point (Fig. 2) of second braking distance.In second braking distance, mechanical braking and electric braking are worked simultaneously, to guarantee vehicle safety.
As mentioned above, in the whole braking distance that comprises first braking distance and second braking distance, electric braking is extremely whole in action to the beginning, and only in second braking distance begins, mechanical braking sytem is started working, and acts on car brakeing simultaneously with electric braking in second braking distance.
In having the vehicle of anti-blocking brake system, for guaranteeing vehicle safety, vehicle control device is intermittently exported B.P. or braking force according to semaphore request when receiving the anti-lock signal.
Vehicle is under normal driving conditions, often braking force has only the 30-40% of maximum braking force, that is to say in the present embodiment and in most cases have only electric braking in action, can reclaim braking energy more like this, reduced the wearing and tearing of mechanical braking sytem simultaneously.
In embodiment 2, pedal is equipped with a brake switch, steps under pedal and sends signal when being subjected to displacement to vehicle control device.All the other structures of present embodiment are identical with embodiment 1.The vehicle control device received signal promptly starts electric braking by electric machine controller.
Claims (6)
1. electronlmobil brake control method with energy recovery, comprise brake treadle mechanism, vehicle control device, battery, electric machine controller, motor, driving system and mechanical braking sytem, it is characterized in that, described brake treadle mechanism comprises first braking distance and second braking distance, and described first braking distance only has electric braking to have an effect; Described second braking distance is that mechanical braking sytem and electric braking are had an effect simultaneously.
2. the electronlmobil brake control method with energy recovery as claimed in claim 1, it is characterized in that, described brake treadle mechanism comprises pedal, push rod and pull back spring, described pedal comprises the pedal signal output unit, the displacement of pedal is from free state position S0, through beginning contact position S1 up to pedal hard-over position Smax with push rod.
3. the electronlmobil brake control method with energy recovery as claimed in claim 1, it is characterized in that, the corresponding pedal displacement of described first braking distance is from S0 to S1, pedal does not touch push rod, therefore mechanical braking is inoperative, only has an effect by pedal signal output unit start signal output electric braking; The corresponding pedal displacement of described second braking distance is from S1 to Smax, and pedal touches and press down push rod, starts mechanical braking sytem up to producing the maximum machine B.P., and pedal signal output unit output signal keeps electric braking to continue to work simultaneously.
4. the electronlmobil brake control method with energy recovery as claimed in claim 1, it is characterized in that, described vehicle control device respectively with the pedal signal output unit, electric machine controller and battery are electrically connected, vehicle control device is gathered the maximum brake power that vehicle miscellaneous part status information such as battery calculates after with the signal S of the pedal signal output unit that receives output and be multiply by a coefficient relevant with S, obtain current best B.P. or brake-force transmission and give electric machine controller, the negative torque of electric machine controller drive motor output, vehicle mechanical can be that kinetic energy is delivered to motor by wheel and driving system, convert kinetic energy to power storage in battery, said process is through the whole braking distance that comprises first braking distance and second braking distance.
5. the electronlmobil brake control method with energy recovery as claimed in claim 2 is characterized in that, described pedal signal output unit is the position transduser of continuous signal output
6. the electronlmobil brake control method with energy recovery as claimed in claim 2 is characterized in that described pedal signal output unit is a brake switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102595564A CN101941423A (en) | 2010-08-16 | 2010-08-16 | Energy recovery type electric car brake control method |
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| CN2010102595564A CN101941423A (en) | 2010-08-16 | 2010-08-16 | Energy recovery type electric car brake control method |
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| CN101941423A true CN101941423A (en) | 2011-01-12 |
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| CN2010102595564A Pending CN101941423A (en) | 2010-08-16 | 2010-08-16 | Energy recovery type electric car brake control method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555818A (en) * | 2012-02-28 | 2012-07-11 | 潍柴动力股份有限公司 | Method and system for increasing brake kinetic energy recovery ratio |
| CN103253256A (en) * | 2013-04-27 | 2013-08-21 | 同济大学 | Electromobile electro-hydraulic composite braking system and braking controlling method thereof |
| CN104290727A (en) * | 2014-09-30 | 2015-01-21 | 广西柳工机械股份有限公司 | Braking system for electric wheel mining dump vehicle |
| CN104786851A (en) * | 2015-04-03 | 2015-07-22 | 安徽安凯汽车股份有限公司 | Electric passenger car brake energy efficient recycling control method |
| CN106627538A (en) * | 2016-11-25 | 2017-05-10 | 航天重型工程装备有限公司 | Electric-hydraulic composite braking system |
| CN108394386A (en) * | 2018-04-28 | 2018-08-14 | 煤炭科学技术研究院有限公司 | A kind of motor vehicle braking system |
| 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 |
| CN109515195A (en) * | 2018-11-09 | 2019-03-26 | 四川南骏汽车集团有限公司 | A kind of vehicle control system of pure electric vehicle and control method |
| CN109849680A (en) * | 2019-04-15 | 2019-06-07 | 贵州长江汽车有限公司 | A kind of hydraulic braking electric automobile energy recycling braking system and method |
| CN114407855A (en) * | 2022-01-18 | 2022-04-29 | 上汽通用五菱汽车股份有限公司 | Electric brake adjusting method, electric vehicle and computer readable storage medium |
-
2010
- 2010-08-16 CN CN2010102595564A patent/CN101941423A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555818A (en) * | 2012-02-28 | 2012-07-11 | 潍柴动力股份有限公司 | Method and system for increasing brake kinetic energy recovery ratio |
| CN102555818B (en) * | 2012-02-28 | 2014-12-10 | 潍柴动力股份有限公司 | Method and system for increasing brake kinetic energy recovery ratio |
| CN103253256A (en) * | 2013-04-27 | 2013-08-21 | 同济大学 | Electromobile electro-hydraulic composite braking system and braking controlling method thereof |
| CN104290727A (en) * | 2014-09-30 | 2015-01-21 | 广西柳工机械股份有限公司 | Braking system for electric wheel mining dump vehicle |
| CN104786851A (en) * | 2015-04-03 | 2015-07-22 | 安徽安凯汽车股份有限公司 | Electric passenger car brake energy efficient recycling control method |
| CN106627538A (en) * | 2016-11-25 | 2017-05-10 | 航天重型工程装备有限公司 | Electric-hydraulic composite braking system |
| CN108394386A (en) * | 2018-04-28 | 2018-08-14 | 煤炭科学技术研究院有限公司 | A kind of motor vehicle braking system |
| 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 |
| CN109515195A (en) * | 2018-11-09 | 2019-03-26 | 四川南骏汽车集团有限公司 | A kind of vehicle control system of pure electric vehicle and control method |
| CN109849680A (en) * | 2019-04-15 | 2019-06-07 | 贵州长江汽车有限公司 | A kind of hydraulic braking electric automobile energy recycling braking system and method |
| CN114407855A (en) * | 2022-01-18 | 2022-04-29 | 上汽通用五菱汽车股份有限公司 | Electric brake adjusting method, electric vehicle and computer readable storage medium |
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Application publication date: 20110112 |