CN101734164B - Automobile composite braking system - Google Patents
Automobile composite braking system Download PDFInfo
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- CN101734164B CN101734164B CN2009102433321A CN200910243332A CN101734164B CN 101734164 B CN101734164 B CN 101734164B CN 2009102433321 A CN2009102433321 A CN 2009102433321A CN 200910243332 A CN200910243332 A CN 200910243332A CN 101734164 B CN101734164 B CN 101734164B
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- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 22
- 230000005662 electromechanics Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 3
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The invention relates to an automobile composite braking system, comprising a hydraulic braking subsystem and a motor braking subsystem, wherein the hydraulic braking subsystem is composed of a pedal brake valve, a pressure retention mechanism, a pressure regulating mechanism, an ABS/ESP hydraulic valve block and a braking controller; the P port of the pedal brake valve is connected with the oil circuit at the outlet of a high pressure accumulator, the T port thereof is connected with the oil circuit of a liquid storage pot, and the A port is connected with the oil circuit of the pressure regulating mechanism; the pressure regulating mechanism is connected with the ABS/ESP hydraulic valve block and the oil circuit of the liquid storage pot; the braking controller is connected with the pressure regulating mechanism, a braking pedal displacement sensor, a wheel speed sensor and a pressure sensor circuit on the oil circuit; and the motor braking subsystem is composed of a motor, a derailleur, a motor controller and batteries. The pressure regulating mechanism can be formed by a two-position two-way normally closed valve and a normally opened valve, and also can be an independent tri-way normally opened electro-hydraulic proportional valve. The motor braking subsystem is supplied with braking force from the hydraulic braking subsystem when braking force thereof is insufficient. The invention can be used in a hybrid electric vehicle, a pure electric vehicle and a fuel cell electric vehicle.
Description
Technical field
The present invention relates to a kind of brake system, particularly about a kind of automobile composite braking system.
Background technology
Under the dual-pressure of the energy and environment, engendered the new automobile that comprises hybrid-power electric vehicle, pure electric vehicle and fuel-cell vehicle at present.Therefore this class automobile has motor and storage battery or super capacitor, can the kinetic energy of automobile be converted into power storage in storage battery or super capacitor by motor at glancing impact.But in general the recovery lock torque that provides of motor can not satisfy the demand of automobile brake, therefore this class automobile has also kept original hydraulic brake system or Pneumatic braking system, therefore automobile is worked simultaneously at glancing impact hydraulic brake system or Pneumatic braking system and motor braking system, just both associating is called composite braking system here.Composite braking system not only will be taken into account braking safety, brake feel, need to reclaim as much as possible braking energy simultaneously, and because under different storage battery state-of-charge, bus voltage and motor speeds, the lock torque that motor can provide has a great difference, therefore just need carry out the actv. utilization to original hydraulic brake system or Pneumatic braking system.
By retrieval, there are following two patents and the present invention that bigger correlativity is arranged.
One, " series connection type brake system of hybrid power vehicle " of Tsing-Hua University, number of patent application is 200510001757.In this this patented technology scheme, in order to realize the tandem braking, between master brake cylinder and ABS hydraulic efficiency governing valve piece, increased hydraulic regulator, the pressure of brake wheel cylinder is controlled by hydraulic regulator when carrying out the braking energy recovery, and the pressure of master brake cylinder is controlled by brake pedal when not carrying out the braking energy recovery.The shortcoming of this technology mainly is: be connected with the oil circuit of brake wheel cylinder when carrying out cutting off master brake cylinder by two two-position three-way valves when braking energy reclaims, thereby but cause brake pedal to be operated because the outlet of master cylinder is plugged this moment.
Two, " the hybrid power car regenerative brake and the anti-lock integrated control system " of Jilin University, number of patent application is 200710055687.In the technical scheme of this patent, two outlets of master brake cylinder directly communicate with brake wheel cylinder by the inlet valve of ABS hydraulic valve block, when therefore in the braking energy removal process, regulating the brake wheel cylinder brake-pressure, can cause master brake cylinder pressure than great fluctuation process, thereby cause the strenuous vibration of brake pedal, influence pedal sense.
Summary of the invention
Therefore at the problems referred to above, the purpose of this invention is to provide a kind of hydraulic braking subsystem and motor braking subsystem of comprising, can realize that the tandem braking energy reclaims and guarantee the automobile composite braking system of brake pedal feel preferably.
For achieving the above object, the present invention takes following technical scheme: a kind of automobile composite braking system, it is characterized in that: it comprises hydraulic braking subsystem and motor braking subsystem, and described hydraulic braking subsystem comprises pedal brake valve, pressure holding, pressure regulating mechanism, ABS/ESP hydraulic valve block, the brake controller of threeway; High pressure accumulator outlet oil circuit in the P mouth of described pedal brake valve and the pressure holding is connected, and the T mouth is connected with fluid reservoir oil circuit in the pressure holding, and the A mouth is connected with the pressure regulating mechanism oil circuit; Described pressure regulating mechanism is connected with the fluid reservoir oil circuit with the ABS/ESP hydraulic valve block; Described brake controller is connected with pressure sensor circuit on pressure regulating mechanism, brake pedal displacement pickup, wheel speed sensors, the oil circuit; Described motor braking subsystem comprises the motor and the change-speed box of mechanical connection, and while and motor, battery, described brake controller circuit bonded assembly electric machine controller, and described battery is connected with described brake controller circuit simultaneously.
Described pressure holding comprises described high pressure accumulator, the outlet of high pressure accumulator is connected with the outlet oil circuit of an oil pump via check valve, the inlet of described oil pump is connected with described fluid reservoir oil circuit via filter, described oil pump is connected with a direct current electromechanics, and the oil supply loop of described oil pump is provided with by pass valve.
Described pressure sensor is separately positioned on pedal brake valve and pressure regulating mechanism, the near front wheel and ABS/ESP hydraulic valve block, off front wheel and the oil circuit that the ABS/ESP hydraulic valve block is communicated with.
Described pressure regulating mechanism comprises a normally closed valve and a normally open valve of 2/2-way, and the A mouth of described pedal brake valve is connected with ABS/ESP hydraulic valve block oil circuit via normally open valve, and described ABS/ESP hydraulic valve block is connected with described fluid reservoir via normally closed valve.
Described pressure regulating mechanism is one or three to drive electro-hydraulic proportional valve usually, the P mouth of described electro-hydraulic proportional valve is connected with the A mouth oil circuit of described pedal brake valve, the T mouth of electro-hydraulic proportional valve is connected with described fluid reservoir oil circuit, and the A mouth of electro-hydraulic proportional valve is connected with described ABS/ESP hydraulic valve block oil circuit.
The present invention is owing to take above technical scheme, the present invention has the following advantages: the defective that 1, the objective of the invention is to overcome existing composite braking system, the flexible of attainment brake hydraulic pressure power, make hydraulic brake system and motor braking system coordination work, machine operation is at generating state when automobile brake, the part of automobile kinetic energy is converted into electric energy, is stored in the battery, not enough braking force is provided by the hydraulic braking subsystem.2, the present invention adopts the pressure-modulation valve of two kinds of forms, a kind of is normally open valve and normally closed valve combination, another kind is often to open the electro-hydraulic proportional valve form, this benefit of two kinds is: the combination cost of normally open valve and normally closed valve is lower, anti-soil thing ability is stronger, often open the electro-hydraulic proportional valve form and then have pedal sense preferably, and need not to measure the wheel cylinder brake-pressure.3, at the pressure retaining parts branch, adopt a threeway pedal brake valve, the P mouth of pedal brake valve is connected with the outlet oil circuit of high pressure accumulator, and the T mouth of pedal brake valve is connected with the fluid reservoir oil circuit, and the A mouth of pedal brake valve is connected with the pressure regulating mechanism oil circuit by pressure sensor.The outlet of high pressure accumulator is connected with the outlet oil circuit of oil pump via check valve simultaneously, and the inlet of oil pump is connected with the fluid reservoir oil circuit via filter.In a word, this composite braking system can be applicable on hybrid vehicle, pure electric automobile and the fuel cell electric vehicle, can realize that the tandem braking energy reclaims, can guarantee brake pedal feel preferably again.
Description of drawings
Fig. 1 is the structure of first embodiment of composite braking system of the present invention
Fig. 2 is the structure of second embodiment of composite braking system of the present invention
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As depicted in figs. 1 and 2, composite braking system of the present invention comprises hydraulic braking subsystem and motor braking subsystem, wherein the motor braking subsystem is converted into electrical power storage by electric power generation in storage battery with a part of automobile kinetic energy, and not enough braking force is provided by the hydraulic braking subsystem.
Described hydraulic braking subsystem comprises wheel speed sensors 1, pressure sensor 2, brake pedal displacement pickup 3, pedal brake valve 4, high pressure accumulator 5, check valve 6, oil pump 7, filter 8, DC machine 9, by pass valve 10, fluid reservoir 11, pressure regulating mechanism 12, ABS/ESP hydraulic valve block 15 and brake controller 16.
Wherein wheel speed sensors 1 is four, is separately positioned near four wheels.Pressure sensor 2 is three, is separately positioned on the path of pedal brake valve 4 and pressure regulating mechanism 12, the near front wheel and ABS/ESP hydraulic valve block 15, off front wheel and ABS/ESP hydraulic valve block 15.Each wheel speed sensors 1, pressure sensor 2, and brake pedal displacement pickup 3 is connected with brake controller 16 circuit, pressure regulating mechanism 12 also is connected with brake controller 16 circuit.
The outlet of high pressure accumulator 5 is connected with the outlet oil circuit of oil pump 7 via check valve 6 simultaneously, and the inlet of oil pump 7 is connected with fluid reservoir 11 oil circuits via filter 8, oil pump 7 and DC machine 9 mechanical connections.Also be provided with by pass valve 10 on the oil supply loop of oil pump 7.Above-mentioned high pressure accumulator 5, check valve 6, oil pump 7, filter 8, DC machine 9, by pass valve 10, fluid reservoir 11 are connected to form pressure holding, are used to provide high hydraulic brake fluid.
Pressure regulating mechanism 12 also is connected with fluid reservoir 11 oil circuits except that with pedal brake valve 4 oil circuits are connected, and is connected with ABS/ESP hydraulic valve block 15 oil circuits.Described pressure regulating mechanism 12 has two kinds of forms, in a kind of form as shown in Figure 1, pressure regulating mechanism 12 comprises bi-bit bi-pass high-speed solenoid valve 13 and bi-bit bi-pass high-speed solenoid valve 14, and wherein high-speed solenoid valve 13 is a normally closed valve, and high-speed solenoid valve 14 is a normally open valve.The A mouth of pedal brake valve 4 is connected with ABS/ESP hydraulic valve block 15 oil circuits via high-speed solenoid valve 14, and ABS/ESP hydraulic valve block 15 is connected with fluid reservoir 11 oil circuits via high-speed solenoid valve 13.Braking liquid when high-speed solenoid valve 14 is opened in the high pressure accumulator 5 enters ABS/ESP hydraulic valve block 15.When high-speed solenoid valve 13 was opened, the braking liquid in the ABS/ESP hydraulic valve block 15 entered fluid reservoir 11.In the another kind of form as shown in Figure 2, pressure regulating mechanism 12 is the electro-hydraulic proportional valve form, this is a triple valve, electro-hydraulic proportional valve 12 is a normally open valve, the A mouth of pedal brake valve is connected with the P mouth oil circuit of electro-hydraulic proportional valve 12, the T mouth of electro-hydraulic proportional valve 12 is connected with fluid reservoir 11 oil circuits, and the A mouth of electro-hydraulic proportional valve 12 is connected with ABS/ESP hydraulic valve block 15 oil circuits.
ABS/ESP hydraulic valve block 15 is connected with pressure-modulation valve 12 oil circuits with four wheels simultaneously.
Described motor braking subsystem comprises battery 17, electric machine controller 18, motor 19, change-speed box 20.Wherein motor 19 and change-speed box 20 mechanical connections, and by change-speed box 20 and two front-wheel mechanical connections.Electric machine controller 18 is connected with motor 19, battery 17, brake controller 16 circuit simultaneously.Battery 17 also is connected with brake controller 16 circuit.
The composite braking system that the present invention proposes comprises hydraulic braking subsystem and motor braking subsystem, when automobile brake, the motor braking subsystem is converted into electrical power storage by electric power generation in storage battery with a part of automobile kinetic energy, and not enough braking force is provided by the hydraulic braking subsystem.Described composite braking system can be applicable on hybrid vehicle, pure electric automobile and the fuel cell electric vehicle.
When the present invention works, the pedal stroke that force value that brake controller 16 records according to pressure sensor 2 or brake pedal displacement pickup 3 record is determined driver's braking requirement, and according to the definite more suitable recovery lock torque of the state of kinematic motion of battery, motor and wheel, thereby calculate the target hydraulic braking force, regulate by 12 pairs of hydraulic braking force of pressure regulating mechanism according to this expected value.When wheel is tending towards locking, cancel the recovery lock torque, pressure regulating mechanism resets.
Claims (6)
1. automobile composite braking system, it is characterized in that: it comprises hydraulic braking subsystem and motor braking subsystem, and described hydraulic braking subsystem comprises pedal brake valve, pressure holding, pressure regulating mechanism, ABS/ESP hydraulic valve block, the brake controller of wheel speed sensors, pressure sensor, brake pedal displacement pickup, threeway; Described pressure holding comprises high pressure accumulator and fluid reservoir, the outlet of described high pressure accumulator is connected with the outlet oil circuit of an oil pump via check valve, the inlet of described oil pump is connected with described fluid reservoir oil circuit via filter, described oil pump is connected with a direct current electromechanics, and the oil supply loop of described oil pump is provided with by pass valve; High pressure accumulator outlet oil circuit in the P mouth of described pedal brake valve and the pressure holding is connected, and the T mouth is connected with fluid reservoir oil circuit in the pressure holding, and the A mouth is connected with the pressure regulating mechanism oil circuit; Described pressure regulating mechanism and ABS/ESP hydraulic valve block are connected with fluid reservoir oil circuit in the pressure holding; Described brake controller is connected with pressure regulating mechanism, brake pedal displacement pickup, wheel speed sensors, pressure sensor circuit;
Described motor braking subsystem comprises another motor and the change-speed box of mechanical connection, and while and another motor, battery, described brake controller circuit bonded assembly electric machine controller, and described battery is connected with described brake controller circuit simultaneously.
2. a kind of automobile composite braking system as claimed in claim 1 is characterized in that: described pressure sensor is separately positioned on pedal brake valve and pressure regulating mechanism, the near front wheel and described ABS/ESP hydraulic valve block, off front wheel and the oil circuit that described ABS/ESP hydraulic valve block is communicated with.
3. a kind of automobile composite braking system as claimed in claim 1 or 2, it is characterized in that: described pressure regulating mechanism comprises a normally closed valve and a normally open valve, the A mouth of described pedal brake valve is connected with described ABS/ESP hydraulic valve block oil circuit via described normally open valve, and described ABS/ESP hydraulic valve block is connected with described fluid reservoir via described normally closed valve.
4. a kind of automobile composite braking system as claimed in claim 3 is characterized in that: described normally closed valve and normally open valve are the 2/2-way valve.
5. a kind of automobile composite braking system as claimed in claim 1 or 2, it is characterized in that: described pressure regulating mechanism is one often to drive electro-hydraulic proportional valve, the P mouth of described electro-hydraulic proportional valve is connected with the A mouth oil circuit of described pedal brake valve, the T mouth of electro-hydraulic proportional valve is connected with described fluid reservoir oil circuit, and the A mouth of electro-hydraulic proportional valve is connected with described ABS/ESP hydraulic valve block oil circuit.
6. a kind of automobile composite braking system as claimed in claim 5 is characterized in that: the described electro-hydraulic proportional valve of often opening is a triple valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102433321A CN101734164B (en) | 2009-12-21 | 2009-12-21 | Automobile composite braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102433321A CN101734164B (en) | 2009-12-21 | 2009-12-21 | Automobile composite braking system |
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| CN101734164A CN101734164A (en) | 2010-06-16 |
| CN101734164B true CN101734164B (en) | 2011-09-14 |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941430B (en) * | 2010-07-05 | 2013-01-02 | 清华大学 | Hydraulic braking system of four-wheel driven electric vehicle |
| CN101927703B (en) * | 2010-07-19 | 2013-03-06 | 清华大学 | Electric vehicle hydraulic brake system according with brake energy recovery and having ABS/ESP function |
| CN101913352B (en) * | 2010-08-02 | 2012-11-21 | 清华大学 | Coordinated braking control method of electric automobile |
| FR2970682B1 (en) * | 2011-01-25 | 2013-01-11 | Renault Sas | METHOD FOR CONTROLLING A MEANS FOR RECOVERING ENERGY GENERATED BY BRAKING A MOTOR VEHICLE |
| CN102133891B (en) * | 2011-03-07 | 2013-05-22 | 清华大学 | H-shaped pipeline layout energy-feedback type hydraulic anti-lock brake system for electric vehicles |
| CN102310850B (en) * | 2011-06-15 | 2013-05-22 | 浙江亚太机电股份有限公司 | Electric vehicle braking system capable of reclaiming braking energy |
| CN104442414B (en) * | 2014-11-13 | 2017-03-22 | 奇瑞汽车股份有限公司 | Brake energy recycling control method |
| CN104816639B (en) * | 2015-04-24 | 2018-06-05 | 浙江科力车辆控制系统有限公司 | A kind of new energy commercial car energy efficient recovery system |
| CN104924914B (en) * | 2015-06-15 | 2017-08-25 | 中通客车控股股份有限公司 | A kind of braking system of electric car and brake control method |
| CN105299102A (en) * | 2015-08-11 | 2016-02-03 | 张泽伟 | Automobile smart brake pad |
| CN107239069A (en) * | 2017-06-12 | 2017-10-10 | 奇瑞汽车股份有限公司 | A kind of intelligent vehicle line control brake system, brake apparatus and testboard |
| CN108639037B (en) * | 2018-06-21 | 2020-03-06 | 北京新能源汽车股份有限公司 | Electric brake compensation control method, controller, electric power-assisted auxiliary system and automobile |
| CN109398099A (en) * | 2018-09-06 | 2019-03-01 | 同济大学 | Regenerative braking low speed based on motor compensating withdraws from operating condition shock extent control method |
| CN109398102A (en) * | 2018-09-13 | 2019-03-01 | 同济大学 | A kind of composite braking transient process control method based on Dual-loop feedback control |
| CN112572385A (en) * | 2020-12-22 | 2021-03-30 | 广西柳工机械股份有限公司 | Pure electric loader braking system and braking control method |
| CN113071463A (en) * | 2021-03-24 | 2021-07-06 | 浙江亚太智能网联汽车创新中心有限公司 | Brake system of unmanned vehicle |
| CN117183751B (en) * | 2023-11-07 | 2024-04-16 | 华侨大学 | Safe and efficient regenerative braking system, control method and electric wheel type engineering machinery |
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