CN106994905A - A kind of regenerative brake system of hybrid bus control strategy - Google Patents
A kind of regenerative brake system of hybrid bus control strategy Download PDFInfo
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- CN106994905A CN106994905A CN201710280550.7A CN201710280550A CN106994905A CN 106994905 A CN106994905 A CN 106994905A CN 201710280550 A CN201710280550 A CN 201710280550A CN 106994905 A CN106994905 A CN 106994905A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
- B60L7/26—Controlling the braking effect
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- Power Engineering (AREA)
- Transportation (AREA)
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of regenerative brake system of hybrid bus control strategy, including the corresponding brake-power balance coefficient of different braking intensity and its corresponding braking force coefficient distribution diagram under the control logic of regeneration brake system, regenerative braking force allocative decision and braking mode based on ECE regulations；The corresponding brake-power balance coefficient of different braking intensity includes motor braking force coefficient, front-wheel mechanical braking force coefficient and trailing wheel mechanical braking force coefficient under braking mode.The Brake force distribution strategy is parallel with traditional braking power allocation strategy, changes smaller to original brakes, when regenerative braking fails, brake force is undertaken by friction brake force, still ensures that traffic safety.
Description
The present invention relates to Regenerative Braking Technology field, and in particular to a kind of regenerative brake system of hybrid bus controls plan
Slightly.
The application of Brake energy recovery technology starts from electric locomotive, and electric energy when it drives comes from power network, is returned during braking
The kinetic energy of receipts is converted into electric energy and is still stored in power network.To in the 1960s, Brake energy recovery technology starts to be applied to
Electric automobile, but because Power Electronic Technique level at that time is limited, battery technology is also relatively backward, so its development is hindered
Hinder.After 1990s, as the companies such as Toyota, the Honda of Japan release the hybrid vehicle of volume production successively,
People start to pay close attention to regenerating braking energy recovery technology once again, the research and development of the technology are accelerated, in Theoretical Design and control algolithm
In terms of achieve good achievement in research.At present, hybrid vehicle on the market all carries regeneration brake system, energy
Effectively reclaim braking energy.
All in all, although the domestic research to regeneration brake system control strategy have some to be in progress, but still in rising
The problem of step section, research, focuses mostly in modeling and simulation, and Brake energy recovery rate is also very low, the regularity and stability of braking
Difference, without ripe practical control algolithm.Regenerative Braking Technology is huge for the meaning of automobile industry, therefore, it is necessary to it
Carry out more in-depth study.
It is an object of the invention to the defect for existing control strategy and deficiency, there is provided a kind of regeneration of hybrid power passenger car
Brakes control strategy.
In order to solve the problems existing in background technology, a kind of regenerative brake system of hybrid bus of the invention control
Strategy, it includes control logic, the regenerative braking force allocative decision based on ECE regulations and the regenerative braking mould of regeneration brake system
The corresponding brake-power balance coefficient of different braking intensity and its corresponding braking force coefficient distribution diagram under formula；Under braking mode
The corresponding brake-power balance coefficient of different braking intensity includes motor braking force coefficient, front-wheel mechanical braking force coefficient and rear turbine
Tool braking force coefficient.With reference to the design feature and parameter of hybrid power passenger car itself, first by means of orthodox car brake force point
Method of completing the square, drafts out segmentation certainty ratio braking force distribution curve so that the axle braking force distribution of hybrid power passenger car is met
The requirement of ECE brake legislations, to ensure the safety and stability of braking；Then electronic mechanism is added in rear axle braking force
Power, while constraints in view of regenerative braking and to greatest extent reclaiming braking energy, based on severity of braking system
Define the Control Strategy for Regenerative Braking of the hybrid power passenger car.The Brake force distribution strategy and traditional braking power allocation strategy are simultaneously
OK, smaller is changed to original brakes, when regenerative braking fails, brake force is undertaken by friction brake force, is still ensured that
Traffic safety.
Preferably, the braking moment summation of demand should add regenerative braking moment equal to mechanical braking torque, to ensure
The braking requirement of vehicle.
Preferably, described hybrid power passenger car is that rear axle is driving, recyclable Brake Energy is present on rear axle, preceding
Axle only carries out mechanical braking.
Preferably, working as SOC>Stop charging to super capacitor when 0.9, prevent super capacitor overvoltage charging, it is super to protect
Level electric capacity.
The present invention has the beneficial effect that：The baking oven can detect Indoor Air Benzene, toluene, dimethylbenzene, furans, pyridine, three
The concentration of chloromethanes and carbon monoxide, can provide sound and light alarm prompting work(in time when concentration exceedes the parameter area pre-set
Can, it efficiently avoid the generation of contingency, it is ensured that the personal safety of experimenter.
【Brief description of the drawings】
Fig. 1 is the control logic figure of regeneration brake system of the present invention；
Fig. 2 is the regenerative braking force allocative decision of the invention based on ECE regulations；
Fig. 3 is the corresponding brake-power balance coefficient of different braking intensity of the invention.
Fig. 4 is regenerative braking force coefficient distribution diagram of the invention.
Table 1 is regenerative braking force coefficient distribution diagram of the invention.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and specific implementation
Mode, the present invention will be described in further detail.It should be appreciated that embodiment described herein is only to explain this
Invention, is not intended to limit the present invention.
As shown in figure 1, it is optimal for target with Brake energy recovery, with reference to orthodox car braking force distribution method, meeting
On the premise of the requirement of ECE brake legislations, the Control Strategy for Regenerative Braking based on severity of braking has been formulated herein, its control logic figure
As shown in Figure 1.
Preferably, the braking moment summation of demand should add regenerative braking moment equal to mechanical braking torque, to ensure
The braking requirement of vehicle.
Preferably, described hybrid power passenger car is that rear axle is driving, recyclable Brake Energy is present on rear axle, preceding
Axle only carries out mechanical braking.
Preferably, working as SOC>Stop charging to super capacitor when 0.9, prevent super capacitor overvoltage charging, it is super to protect
Level electric capacity.
As shown in Fig. 2 being the regenerative braking force allocative decision based on ECE regulations, i.e.,:
1) as Z≤0.1, only electric braking works.With the increase of severity of braking, the brake force of motor also increases, when rubbing
When wiping brake force is 0, motor brake power has reached maximum of points A；
2) when 0.1<Z≤0.146 and 0.146<Z<When 0.7, Electro-mechanical brake is used along AB and BCD lines respectively.To ensure electricity
Motivation brake force is invariable, and keeps total braking force to be equal to demand brake force, friction brake force is stepped up from 0, by original
The ratio of car is the ratio between BCD line traffic control front and rear wheel brake force；
3) as Z >=0.7, it is considered as brake hard operating mode.To brake with ensuring vehicle safety, total braking force is kept to be equal to demand
Brake force, the rapid friction brake force for recovering trailing wheel simultaneously increases to maximum, at the same time, be gradually reduced motor brake power until
For 0, then front and rear wheel brake force is distributed along DE lines；
4) SOC is worked as>When 0.9, for protection super capacitor, stop charging to super capacitor, braked using only mechanical friction;Work as speed
<It is same to be braked using only mechanical friction during 6km/h, it is contemplated that the generating efficiency of motor is low and Brake energy recovery ability is small.
Calculated according to above-mentioned braking force distribution relation and obtain following relationship：
OA line segments：Fμ2=GZ Fμ1=0 (0<Z≤0.1)
AB line segments：Fμ2=Fre.max Fμ1=GZ-Fμ2 (0.1<Z≤0.146)
BC line segments：Fμ2=2.106Fμ1 Fre=Fre.max (0.146<Z≤0.4)
CD line segments：Fμ2=1.0367Fμ1+22722 Fre=Fre.max (0.4<Z≤1.0)
In formula:Fμ1--- the brake braking force (N) of front-wheel；Fμ2--- the brake braking force (N) of trailing wheel；Fre--- it is electronic
Machine regenerative braking force (N)；Fre.max--- motor maximum regenerative braking force (N)；G --- car car weight (N).
By calculating, the corresponding brake-power balance coefficient of different braking intensity under braking mode, such as table 1 are finally given
Shown, its corresponding braking force coefficient distribution diagram is as shown in Figure 3.The Brake force distribution strategy and traditional braking power allocation strategy are simultaneously
OK, smaller is changed to original brakes, when regenerative braking fails, brake force is undertaken by friction brake force, is still ensured that
Traffic safety.
It is described above, it is merely illustrative of the technical solution of the present invention and unrestricted, those of ordinary skill in the art are to this hair
Other modifications or equivalent substitution that bright technical scheme is made, without departing from the spirit and scope of technical solution of the present invention,
It all should cover among scope of the presently claimed invention.
Claims (4)
1. a kind of regenerative brake system of hybrid bus control strategy, it is characterised in that：It includes the control of regeneration brake system
Logic processed（Fig. 1）, regenerative braking force allocative decision based on ECE regulations（Fig. 2）With different braking intensity under braking mode
Corresponding brake-power balance coefficient（Table 1）And its corresponding braking force coefficient distribution diagram（Fig. 3）.
2. a kind of regenerative brake system of hybrid bus control strategy according to claim 1, it is characterised in that：It is described
Regeneration brake system control logic（Fig. 1）To be the Strategy for Regeneration Control based on severity of braking.
3. a kind of regenerative brake system of hybrid bus control strategy according to claim 1, it is characterised in that：It is described
The regenerative braking force allocative decision based on ECE regulations（Fig. 2）Distribution curve include：
As Z≤0.1, only electric braking is worked, and front and rear wheel brake force is distributed along OA lines；When 0.1<Z≤0.146 and 0.146<
Z<When 0.7, Electro-mechanical brake is used along AB and BCD lines respectively, by the ratio between BCD line traffic control front and rear wheel brake force；When Z >=0.7
When, distribute front and rear wheel brake force along DE lines.
4. a kind of regenerative brake system of hybrid bus control strategy according to claim 1, it is characterised in that：It is described
Braking mode under the corresponding brake-power balance coefficient of different braking intensity（Table 1）Including：Motor braking force coefficient, front-wheel
Mechanical braking force coefficient and trailing wheel mechanical braking force coefficient, while also having refined the classification of severity of braking, severity of braking is respectively：
0<Z≤0.1；0.1 <Z≤0.146；0.146<Z≤0.4；0.4<Z≤0.7；0.7<Z≤1.0.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472251A (en) * | 2017-08-08 | 2017-12-15 | 北京长城华冠汽车科技股份有限公司 | A kind of four-wheel driving electric vehicle slides control method and system |
| CN108248393A (en) * | 2018-01-12 | 2018-07-06 | 武汉理工大学 | Braking energy of electric automobiles recovery method based on piezoelectric material recycling braking energy |
| CN108944865A (en) * | 2018-06-28 | 2018-12-07 | 潍柴动力股份有限公司 | The braking system and its braking method of new energy vehicle |
| CN109204260A (en) * | 2018-05-15 | 2019-01-15 | 哈尔滨理工大学 | Electric vehicle brake force distribution method |
| CN109941245A (en) * | 2019-04-08 | 2019-06-28 | 哈尔滨理工大学 | A kind of electric vehicle brake force distribution method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472251A (en) * | 2017-08-08 | 2017-12-15 | 北京长城华冠汽车科技股份有限公司 | A kind of four-wheel driving electric vehicle slides control method and system |
| CN108248393A (en) * | 2018-01-12 | 2018-07-06 | 武汉理工大学 | Braking energy of electric automobiles recovery method based on piezoelectric material recycling braking energy |
| CN109204260A (en) * | 2018-05-15 | 2019-01-15 | 哈尔滨理工大学 | Electric vehicle brake force distribution method |
| CN108944865A (en) * | 2018-06-28 | 2018-12-07 | 潍柴动力股份有限公司 | The braking system and its braking method of new energy vehicle |
| CN109941245A (en) * | 2019-04-08 | 2019-06-28 | 哈尔滨理工大学 | A kind of electric vehicle brake force distribution method |
| CN109941245B (en) * | 2019-04-08 | 2022-02-01 | 哈尔滨理工大学 | Braking force distribution method for electric automobile |
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