CN1397447A - Brake system with combination of feedback brake with hydraulic brake for motor - Google Patents
Brake system with combination of feedback brake with hydraulic brake for motor Download PDFInfo
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- CN1397447A CN1397447A CN 02136500 CN02136500A CN1397447A CN 1397447 A CN1397447 A CN 1397447A CN 02136500 CN02136500 CN 02136500 CN 02136500 A CN02136500 A CN 02136500A CN 1397447 A CN1397447 A CN 1397447A
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- braking
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- regenerative braking
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Abstract
A barake system with joint control to motor feedback braking and hydraulic braking is composed of wheels, brakes fixed to wheel, braking oil pump, motor integrated with wheel, power supply of motors, rotation speed sensor, car speed sensor and controller. Its advantages are high braking effect and recovering energy on braking.
Description
Technical field
The present invention relates to a kind of braking system of electric car, relate in particular to the brake system that a kind of motor regenerative braking and hydraulic braking jointly control.
Background technology
Traditional internal-combustion engines vehicle adopts the hydraulic brake system braking, and glancing impact can't recuperated energy.Also there is the shortcoming of braking off-capacity in electronlmobil iff relying on motor to carry out regenerative braking.Therefore, on the basis of hydraulic brake system, increase wheel limit drive motor and carry out regenerative braking, become the feasible braking scheme of braking system of electric car.
Summary of the invention
Technical matters to be solved by this invention provides the brake system that a kind of motor regenerative braking and hydraulic braking jointly control, guaranteeing preferentially under the prerequisite of deceleration and stopping performance to adopt the motor regenerative braking, to reclaim braking energy as much as possible.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme: the brake system that provides a kind of motor regenerative braking and hydraulic braking to jointly control, it comprises: wheel, and the drg of captiveing joint with wheel respectively, the brake pump that is connected with power line with drg, this brake system also comprises: the wheel motor that integrates with wheel respectively, the power supply that is connected with power line with wheel motor, be located at the tachogen on the wheel motor, car speed sensor and control unit, described tachogen, the equal incoming signal of car speed sensor is given control unit, the algorithm of described control unit is as follows: utilize tachogen, the speed of a motor vehicle of car speed sensor input and the slip rate of revolution speed calculating wheel, if wheel slip less than 0.2, then starts hydraulic braking and motor regenerative braking Associated brake pattern; If wheel slip greater than 0.2, then starts the ABS (Anti-lock Braking System) pattern.
Like this, the electronlmobil glancing impact of hydraulic brake system is being equipped with in the present invention, can be according to car load state of kinematic motion, rate of braking and motor and battery condition, motor regenerative braking system and hydraulic brake system are jointly controlled, therefore can be under the prerequisite that guarantees brake efficiency, utilize the regenerative braking characteristic of motor to reclaim braking energy, can save the energy.
Description of drawings
Fig. 1 is the structural representation of the brake system that jointly controls of motor regenerative braking and hydraulic braking.
Fig. 2 is the workflow diagram of control unit.
Fig. 3 is the workflow diagram of braking mode 100.
The specific embodiment
As shown in Figure 1: the brake system that this motor regenerative braking and hydraulic braking jointly control comprises: two front-wheels 2, two trailing wheels 7, and four drgs 1 of captiveing joint with the front-wheel trailing wheel respectively, car speed sensor 3, brake pump 4, power supply 5, be located at the storage battery SOC sensor 6 on the power supply, the wheel motor 8 that integrates with wheel respectively, be located at the tachogen 9 on the wheel motor 8, control unit 10, brake pedal displacement pickup 11, described storage battery SOC sensor 6, tachogen 9, brake pedal displacement pickup 11, car speed sensor 3 all passes to induced signal control unit 10, described wheel motor 8 and power supply 5 are connected by power line, and described brake pump 4 and drg 1 are connected by power line.
Described power supply 5 is a battery pack in the present embodiment, can reclaim the source as feedback energy simultaneously.
This brake system principle of work is as follows:
As shown in Figure 2: at first, the angular deceleration that obtains according to the deceleration/decel of the change calculations automobile of vehicle speed signal, by the wheel speed sensor calculated signals and utilize the speed of a motor vehicle and vehicle wheel rotational speed calculates the slip rate of wheel, the informix of pedal speed three aspects that obtained by brake pedal displacement and differential calculation is judged the braking mode that vehicle should enter: if wheel slip less than 0.2, then starts braking mode 100; Wheel slip then starts braking mode 200 greater than 0.2.Described braking mode 100 is hydraulic braking and motor regenerative braking Associated brake pattern; Described braking mode 200 is the ABS (Anti-lock Braking System) pattern.
Below this is explained in detail:
As shown in Figure 3: braking mode 100 times, at first,, determine whether power supply has the reverse charging ability according to the size of current storage battery SOC value, promptly determine current whether can the starter motor regenerative braking.If the SOC value greater than 60%, is then carried out hydraulic braking form 101, promptly do not carry out the motor regenerative braking, ownership power provides by hydraulic brake system, if the SOC value less than 60%, then can be carried out the motor regenerative braking, promptly enter the form 102 of hydraulic braking and motor regenerative braking associated working.
The form 102 of described hydraulic braking and motor regenerative braking associated working comprises several form specific as follows:
Form 1): if the brake pedal displacement less than certain value, is then only implemented the motor regenerative braking, hydraulic brake system is not worked.
Form 2): if the brake pedal displacement is greater than in certain value, motor regenerative braking system operates at full capacity, and not enough braking force part is provided by hydraulic brake system.
Braking mode 200 times, the present invention has following two kinds of forms:
Form 1): only utilize the brake-power regulation function of hydraulic brake system to realize ABS (Anti-lock Braking System), and do not have motor regenerative braking action.
Form 2): produce changeless best brake fluid pressure characteristic by hydraulic brake system, (prior art repeats no more here) and carry out the dynamic adjustments of braking force by the motor regenerative braking realizes anti-lock brake.Concrete principle is as follows: the tach signal that obtains according to wheel speed sensor carries out differential calculation, obtains the angular deceleration of wheel, utilizes the slip rate of reference speed calculating wheel simultaneously, and compares with the slip rate 0.2 of expecting.If the actual slip rate surpasses anticipated value, just increase the driving torque of motor with certain rate that rises, after the actual slip rate is less than anticipated value, finish.Subsequently the braking torque that increases motor with certain rate that rises until the actual slip rate greater than anticipated value.So periodically repeat to stop until automobile brake.
Claims (7)
1, the brake system that a kind of motor regenerative braking and hydraulic braking jointly control, it comprises: wheel, and the drg (1) of captiveing joint with wheel respectively, the brake pump (4) that is connected with power line with drg (1), it is characterized in that, this brake system also comprises: the wheel motor (8) that integrates with wheel respectively, the power supply (5) that is connected with power line with wheel motor (8), be located at the tachogen (9) on the wheel motor (8), car speed sensor (3) and control unit (10), described tachogen (9), car speed sensor (3) all incoming signal is given control unit (10), the algorithm of described control unit (10) is as follows: A: utilize tachogen (9) earlier, the speed of a motor vehicle and the revolution speed calculating wheel slip of car speed sensor (3) input, B, determine braking mode by judging slip rate.
2, the brake system that jointly controls of motor regenerative braking according to claim 1 and hydraulic braking, it is characterized in that, described step B, determine that by judging slip rate braking mode is meant: if wheel slip less than 0.2, then starts hydraulic braking and motor regenerative braking Associated brake pattern (100); If wheel slip greater than 0.2, then starts ABS (Anti-lock Braking System) pattern (200).
3, the brake system that jointly controls of motor regenerative braking according to claim 1 and hydraulic braking is characterized in that described power supply (5) is a battery pack.
4, the brake system that jointly controls of motor regenerative braking according to claim 1 and hydraulic braking is characterized in that, this brake system also comprises brake pedal displacement pickup (11) and is located at storage battery SOC sensor (6) on the power supply (5).
5, the brake system that motor regenerative braking according to claim 2 and hydraulic braking jointly control, it is characterized in that, hydraulic braking and motor regenerative braking Associated brake pattern (100) are meant: according to the size of current storage battery SOC value, determine whether power supply has the reverse charging ability, promptly determine current whether can the starter motor regenerative braking, if the SOC value is greater than 60%, then carry out hydraulic braking form (101), promptly do not carry out the motor regenerative braking, ownership power provides by hydraulic brake system, if the SOC value less than 60%, then can be carried out the motor regenerative braking, promptly enter the form (102) of hydraulic braking and motor regenerative braking associated working.
6, the brake system that jointly controls of motor regenerative braking according to claim 5 and hydraulic braking is characterized in that the form (102) of hydraulic braking and motor regenerative braking associated working comprises:
1) if the brake pedal displacement less than certain value, is then only implemented the motor regenerative braking, hydraulic brake system is not worked;
2) if the brake pedal displacement greater than in certain value, motor regenerative braking system operates at full capacity, not enough braking force part is provided by hydraulic brake system.
7, the brake system that jointly controls of motor regenerative braking according to claim 2 and hydraulic braking is characterized in that described ABS (Anti-lock Braking System) pattern (100) comprises following form:
1) only utilizes the brake-power regulation function of hydraulic brake system to realize ABS (Anti-lock Braking System), and do not have motor regenerative braking action.
2) produce changeless best brake fluid pressure characteristic by hydraulic brake system, and carry out the dynamic adjustments of braking force, realize ABS (Anti-lock Braking System) by the motor regenerative braking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02136500 CN1397447A (en) | 2002-08-14 | 2002-08-14 | Brake system with combination of feedback brake with hydraulic brake for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02136500 CN1397447A (en) | 2002-08-14 | 2002-08-14 | Brake system with combination of feedback brake with hydraulic brake for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1397447A true CN1397447A (en) | 2003-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02136500 Pending CN1397447A (en) | 2002-08-14 | 2002-08-14 | Brake system with combination of feedback brake with hydraulic brake for motor |
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| CN (1) | CN1397447A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427343C (en) * | 2006-11-24 | 2008-10-22 | 清华大学 | Braking energy feeding control method of electric automobile |
| CN100511965C (en) * | 2004-11-22 | 2009-07-08 | 株式会社日立制作所 | Motor control apparatus, power steering apparatus and brake control apparatus |
| CN102166961A (en) * | 2011-03-31 | 2011-08-31 | 北京汽车新能源汽车有限公司 | AT (automatic transmission)-based pure electric automobile brake energy recovery control system and method thereof |
| CN102269658A (en) * | 2011-04-29 | 2011-12-07 | 北京工业大学 | Electro-hydraulic combined brake experiment vehicle |
| CN102975714A (en) * | 2012-11-19 | 2013-03-20 | 北京工业大学 | Electric vehicle chassis system and collaborative control method thereof |
| CN103991442A (en) * | 2014-05-26 | 2014-08-20 | 北京理工大学 | Compound braking system of electric vehicle and compound braking method thereof |
| CN103991384A (en) * | 2014-05-26 | 2014-08-20 | 北京理工大学 | Compound braking system of electric vehicle and compound braking method thereof |
| CN105172785A (en) * | 2015-09-09 | 2015-12-23 | 北京汽车研究总院有限公司 | Vehicle torque vector distribution method and system |
| CN106915344A (en) * | 2015-12-24 | 2017-07-04 | 北汽福田汽车股份有限公司 | For the method and apparatus of motor vehicle driven by mixed power |
| CN107303820A (en) * | 2016-04-25 | 2017-10-31 | 上海汽车集团股份有限公司 | Anti-lock braking system and its control method, device |
| CN108583292A (en) * | 2018-04-25 | 2018-09-28 | 北京新能源汽车股份有限公司 | Control method for automobile energy recovery, vehicle control unit and electric automobile |
| CN113060006A (en) * | 2019-12-30 | 2021-07-02 | 上海汽车集团股份有限公司 | Energy recovery method, system and device for variable brake clearance of automobile |
-
2002
- 2002-08-14 CN CN 02136500 patent/CN1397447A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100511965C (en) * | 2004-11-22 | 2009-07-08 | 株式会社日立制作所 | Motor control apparatus, power steering apparatus and brake control apparatus |
| CN100427343C (en) * | 2006-11-24 | 2008-10-22 | 清华大学 | Braking energy feeding control method of electric automobile |
| CN102166961A (en) * | 2011-03-31 | 2011-08-31 | 北京汽车新能源汽车有限公司 | AT (automatic transmission)-based pure electric automobile brake energy recovery control system and method thereof |
| CN102269658A (en) * | 2011-04-29 | 2011-12-07 | 北京工业大学 | Electro-hydraulic combined brake experiment vehicle |
| CN102975714A (en) * | 2012-11-19 | 2013-03-20 | 北京工业大学 | Electric vehicle chassis system and collaborative control method thereof |
| CN102975714B (en) * | 2012-11-19 | 2015-10-14 | 北京工业大学 | A kind of elec. vehicle chassis system |
| CN103991384A (en) * | 2014-05-26 | 2014-08-20 | 北京理工大学 | Compound braking system of electric vehicle and compound braking method thereof |
| CN103991442A (en) * | 2014-05-26 | 2014-08-20 | 北京理工大学 | Compound braking system of electric vehicle and compound braking method thereof |
| CN103991384B (en) * | 2014-05-26 | 2016-04-20 | 北京理工大学 | A kind of composite braking system of elec. vehicle and composite brakig method thereof |
| CN105172785A (en) * | 2015-09-09 | 2015-12-23 | 北京汽车研究总院有限公司 | Vehicle torque vector distribution method and system |
| CN106915344A (en) * | 2015-12-24 | 2017-07-04 | 北汽福田汽车股份有限公司 | For the method and apparatus of motor vehicle driven by mixed power |
| CN106915344B (en) * | 2015-12-24 | 2019-07-23 | 北京宝沃汽车有限公司 | Method and apparatus for hybrid vehicle |
| CN107303820A (en) * | 2016-04-25 | 2017-10-31 | 上海汽车集团股份有限公司 | Anti-lock braking system and its control method, device |
| CN108583292A (en) * | 2018-04-25 | 2018-09-28 | 北京新能源汽车股份有限公司 | Control method for automobile energy recovery, vehicle control unit and electric automobile |
| CN113060006A (en) * | 2019-12-30 | 2021-07-02 | 上海汽车集团股份有限公司 | Energy recovery method, system and device for variable brake clearance of automobile |
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