CN104442409B - Electric vehicle braking energy recovery controller and control method thereof - Google Patents
Electric vehicle braking energy recovery controller and control method thereof Download PDFInfo
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- CN104442409B CN104442409B CN201410634948.2A CN201410634948A CN104442409B CN 104442409 B CN104442409 B CN 104442409B CN 201410634948 A CN201410634948 A CN 201410634948A CN 104442409 B CN104442409 B CN 104442409B
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- 238000000034 method Methods 0.000 title claims description 11
- 230000005611 electricity Effects 0.000 claims description 12
- 230000001172 regenerating effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides an electric vehicle braking energy recovery controller. The electric vehicle braking energy recovery controller can intelligently judge the braking force needs of an electric braking force and hydraulic braking system, electric braking force is used preferentially, and the recovery rate of braking energy is improved extremely. The electric vehicle braking energy recovery controller structurally comprises a power module, a control chip and a pair of piston cylinders which are communicated with a main oil pipe and an auxiliary oil pipe of a brake master cylinder respectively. The piston cylinders are arranged in parallel. Push rods of the piston cylinders are driven synchronously through a control motor. At least brake pedal sensor signals, brake switch signals, ignition switch signals and vehicle speed sensor signals are input into the control chip. The control chip outputs a path of motor control signals and a path of braking energy recovery device controlling signals. The motor control signals are connected with the control motor, and the control motor can control the travel of the push rods. According to the electric vehicle braking energy recovery controller, due to the fact that the proportional relation between hydraulic braking and electric braking can be regulated intelligently, it can be guaranteed that the electric braking force is used preferentially, and the recovery rate of the braking energy of an electric vehicle can be increased greatly.
Description
Technical field
The present invention relates to vehicle technology field is and in particular to a kind of electric vehicle brake power recovery controller and its control
Method.
Background technology
Becoming increasingly popular and widely using with automobile, the pollution that ordinary internal combustion engine automobile brings and resource consumption are increasingly
How of interest by people, electric automobile automobile with its energy-conserving and environment-protective and zero-emission of increased attention.But battery
The bottleneck of technology development, constrains the development of electric automobile significantly.How to improve the course continuation mileage of electric automobile, become one
Problem demanding prompt solution.
At present, on most electric automobiles, brakes still adopts the design the same with regular gasoline car, adopts
Replace engine to provide vacuum power, assisted hydraulic brake system for vavuum pump with motor.When user brakes, helped by hydraulic pressure
Power passes through mechanical braking device, and the kinetic energy of vehicle is converted into thermal energy consumption.
How the kinetic energy collecting of vehicle during braking to be stored and to be recycled, become solution battery bottleneck at this stage, carry
Rise one of effective solution of electric motor car course continuation mileage.On simple Brake Energy retracting device, retain original hydraulic pressure
On the basis of brakes does not make any changes, same using the recoverable electric braking of braking and traditional vacuum hydraulic brakes
When action, because hydraulic system works and ratio electrical brake system longevity of service always, lead to electric braking reclaim energy less,
Energy regenerating DeGrain.
Content of the invention
The primary and foremost purpose of the present invention is to propose a kind of electric vehicle brake power recovery controller, can intelligent decision electric braking force
With the demand braking force of brake fluid system, preferentially using electric braking force, greatly improve Brake energy recovery rate.
The electric vehicle brake power recovery controller being provided according to the present invention, it is critical only that including power module, controls core
Piece and be respectively communicated with the main oil pipe of master cylinder and the piston cylinder of secondary oil pipe for a pair, described piston cylinder is arranged in parallel, described work
The push rod of plug cylinder is synchronously driven by controlled motor, and the input of described control chip at least includes brake pedal sensor signal, system
Dynamic switching signal, ignition switch signal and vehicle speed sensor signal, the output of described control chip includes a road motor control letter
Number output and road Brake energy recovery controller control signal output, described motor control signal connects controlled motor, described
Controlled motor can control the stroke of described push rod.
The electric vehicle brake power recovery controller of the present invention, the main oil pipe of master cylinder and secondary oil pipe piston cylinder it
Between arrange transfer bar mechanism, increase brake fluid flowing idle stroke, by control chip according to input signal one side pass through control
Motor adjusts idle stroke, reduces hydraulic braking force proportion, and another aspect control chip controls Brake energy recovery controller
Export corresponding electric braking force, that is, the ratio of adjustment hydraulic braking and electric braking under the basis ensureing demand braking force
Example relation, thereby may be ensured that and preferentially use electric braking force, can greatly improve the electric vehicle brake power rate of recovery.
Further, the input of described control chip also includes clutch switch signal and engine speed sensor letter
Number.So can more accurately calculate the maximum electricity system that driver demand for power and current brake energy regenerating controller are provided that
Power and car load allow to participate in the maximum electric braking force of braking.
Specifically, the stroke of described controlled motor push rod according to following rule control：Set Brake energy recovery
The maximum electric braking force that controller is provided that is x, sets described push rod stroke and has z gear, and car load allows to participate in braking
Maximum electric braking force is zN, sets push rod position and is in kth shelves, if x is less than N, k=0, if N≤x is ＜ 2N, k=1 ..., if
（z-1）N≤x ＜ zN, then k=z-1, if x is ＞ zN, k=z；If x is ＜ zN, described control chip controls described braking energy to return
Admission controller adopts kN electric braking force to participate in braking, if x >=zN, described control chip controls described Brake energy recovery to control
Device adopts zN electric braking force to participate in braking.It is difficult to precise control is realized to electric braking force in practical application, multiple-rank control can be passed through
Realize electric braking force to adjust.
Further, described rule also includes：If control chip receives the fully loaded of described Brake energy recovery controller
Signal, then control the stroke of described push rod to be reduced to 0.So electric brake controller can be disconnected after recuperator is fully loaded with, prevent
Only overload equivalent risk.
The present invention also provides the control method of described electric vehicle brake power recovery controller, comprises the following steps：
Electricity in A, Full Vehicle System, piston cylinder push rod moves to the upper limit, that is, the stroke of described push rod is initialized as 0；
B, user's brake pedal, the brake fluid of master cylinder passes through main and auxiliary oil pipe and flows into proportioning valve, now by braking
Master cylinder provides brake force；
C, control chip collection brake pedal sensor signal, brake switch signal, ignition switch signal and speed sensing
Device signal, calculates the maximum electric braking force that current brake energy regenerating controller is provided that and car load allows to participate in braking
Big electric braking force, and according to following rule control push rod stroke：Set Brake energy recovery controller to be provided that
Big electric braking force is x, sets described push rod stroke and has z gear, and it is zN that car load allows the maximum electric braking force participating in braking,
Set push rod position and be in kth shelves, if x is less than N, k=0, if N≤x is ＜ 2N, k=1 ..., if（z-1）N≤x ＜ zN, then k
=z-1, if x is ＞ zN, k=z；If x is ＜ zN, described control chip controls described Brake energy recovery controller to adopt kN electricity system
Power participates in braking, if x >=zN, described control chip controls described Brake energy recovery controller to adopt zN electric braking force to join
With braking.
This method passes through to set the stroke gear of increased piston cylinder push rod, various according to received by control chip
Sensor signal, calculates the maximum electricity system that current driver's power demand and current brake energy regenerating controller are provided that
Power and car load allow to participate in the maximum electric braking force of braking, and then control piston cylinder push rod to march to accordingly by controlled motor
Stroke gear, simultaneously control Brake energy recovery controller ensure current braking effort demand in the case of select reasonably electricity
Brake force participates in braking, improves motor-car Brake energy recovery rate.
Further, if the control rule of described push rod also includes control chip and receives described Brake energy recovery control
The full signal of device, then control the stroke of described push rod to be reduced to 0.
Further, the control chip collection signal of described step C also includes clutch switch signal and engine speed
Sensor signal.
Brief description
Fig. 1 is the structural representation of the electric vehicle brake power recovery controller of the present invention.
Fig. 2 is the system block diagram of the present invention.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, for example involved to the specific embodiment of the present invention is each
Mutual alignment between the shape of component, construction, each several part and annexation, the effect of each several part and operation principle etc. are made into one
The detailed description of step.
Embodiment 1：
As Fig. 1,2, the electric vehicle brake power recovery controller of the present invention, including power module, control chip and one
Piston cylinder to the main oil pipe being respectively communicated with master cylinder and secondary oil pipe, described piston cylinder is arranged in parallel, the pushing away of described piston cylinder
Bar is synchronously driven by controlled motor, and the input of described control chip includes brake pedal sensor signal, brake switch signal, point
Fiery switching signal, vehicle speed sensor signal, clutch switch signal and engine speed sensor signal, described control chip
Output includes a road motor control signal output and a road Brake energy recovery controller control signal output, described motor control
Signal connects controlled motor, and described controlled motor can control the stroke of described push rod.Controlled motor is according to following rule control institute
State the stroke of push rod：Set the maximum electric braking force that Brake energy recovery controller is provided that as x, set described push rod stroke z
Individual gear, it is zN that car load allows the maximum electric braking force participating in braking, if x is less than N, z=0, if N≤x is ＜ 2N, Z=
1 ..., if（z-1）≤ x is less than zN, then z=N, if x is more than zN, z=N；If x is less than zN, described control chip controls institute
Stating Brake energy recovery device adopts xN electric braking force to participate in braking, if x >=zN, described control chip controls described braking energy
Recover adopts zN electric braking force to participate in braking.In order to disconnect electric brake controller after recuperator is fully loaded with, prevent from transshipping
Equivalent risk, control chip receives the full signal of described Brake energy recovery controller, then control the stroke of described push rod to drop
For 0.
A, the control method of this electric vehicle brake power recovery controller comprise the following steps：Electricity, piston in Full Vehicle System
Cylinder push rod moves to the upper limit, that is, the stroke of described push rod is initialized as 0；
B, user's brake pedal, the brake fluid of master cylinder passes through main and auxiliary oil pipe and flows into proportioning valve, now by braking
Master cylinder provides brake force；
C, control chip collection brake pedal sensor signal, brake switch signal, ignition switch signal and speed sensing
Device signal, calculates the maximum electric braking force that current brake energy regenerating controller is provided that and car load allows to participate in braking
Big electric braking force, and according to following rule control push rod stroke：Set Brake energy recovery controller to be provided that
Big electric braking force is x, sets described z gear of push rod stroke, and it is zN that car load allows the maximum electric braking force participating in braking, if x
Less than N, then z=0, if N≤x is ＜ 2N, Z=1 ..., if（z-1）≤ x is less than zN, then z=N, if x is more than zN, z=N；If
X is less than zN, then described control chip controls described Brake energy recovery device to adopt xN electric braking force to participate in braking, if x >=zN,
Described control chip controls described Brake energy recovery device to adopt zN electric braking force to participate in braking.
This method passes through to set the stroke gear of increased piston cylinder push rod, various according to received by control chip
Sensor signal, calculates the maximum electricity system that current driver's power demand and current brake energy regenerating controller are provided that
Power and car load allow to participate in the maximum electric braking force of braking, and then control piston cylinder push rod to march to accordingly by controlled motor
Stroke gear, simultaneously control Brake energy recovery controller ensure current braking effort demand in the case of select reasonably electricity
Brake force participates in braking, improves motor-car Brake energy recovery rate.The present invention is the effectively course continuation mileage of lifting car load or minimizing
The capacity of battery, reduces the important method of integral vehicle cost and weight.
During practical application, if Brake energy recovery controller, electric machine controller, control chip be whole or single inefficacy, can
Corresponding Indication of Losing Efficacy lamp is set, reminds user function to lose efficacy, hydraulic system normal work.Even if Brake energy recovery controls
Device, electric machine controller, control chip be whole or single inefficacy, and brake force remains to normally provide, simply brake force and pedal travel
Corresponding relation can change, and therefore the present invention also has the feature that security of system can be good, is suitable to promote the use of.
Claims (5)
1. a kind of electric vehicle brake power recovery controller is it is characterised in that include power module, control chip and a pair point
Not Lian Tong the main oil pipe of master cylinder and the piston cylinder of secondary oil pipe, described piston cylinder is arranged in parallel, the push rod of described piston cylinder by
Controlled motor synchronously drives, and the input of described control chip at least includes brake pedal sensor signal, brake switch signal, point
Fiery switching signal and vehicle speed sensor signal, the output of described control chip includes a road motor control signal output and a road system
Energy recovery controller control signal exports, and described motor control signal connects controlled motor, and described controlled motor can control
The stroke of described push rod, the input of described control chip also includes clutch switch signal and engine speed sensor signal,
The stroke of described controlled motor push rod according to following rule control：Set the maximum that Brake energy recovery controller is provided that
Electric braking force is x, sets described push rod stroke and has z gear, and it is zN that car load allows the maximum electric braking force participating in braking, if
Determine push rod position and be in kth shelves, if x is less than N, k=0, if N≤x is ＜ 2N, k=1 ..., if（z-1）N≤x ＜ zN, then k=
Z-1, if x is ＞ zN, k=z；If x is ＜ zN, described control chip controls described Brake energy recovery controller to adopt kN electricity system
Power participates in braking, if x >=zN, described control chip controls described Brake energy recovery controller to adopt zN electric braking force to join
With braking.
2. electric vehicle brake power recovery controller according to claim 1 is it is characterised in that described rule also includes：If
Control chip receives the full signal of described energy recovery controller, then control the stroke of described push rod to be reduced to 0.
3. electric vehicle brake power recovery controller according to claim 1 control method it is characterised in that include with
Lower step：
Electricity in A, Full Vehicle System, piston cylinder push rod moves to the upper limit, that is, the stroke of described push rod is initialized as 0；
B, user's brake pedal, the brake fluid of master cylinder passes through main and auxiliary oil pipe and flows into proportioning valve, now by master cylinder
Brake force is provided；
C, control chip collection brake pedal sensor signal, brake switch signal, ignition switch signal and vehicle speed sensor letter
Number, calculate the maximum electric braking force that current brake energy regenerating controller is provided that and car load allows to participate in the maximum electricity of braking
Brake force, and according to following rule control push rod stroke：Set the maximum electricity that Brake energy recovery controller is provided that
Brake force is x, sets described push rod stroke and has z gear, and it is zN that car load allows the maximum electric braking force participating in braking, sets
Push rod position is in kth shelves, if x is less than N, k=0, if N≤x is ＜ 2N, k=1 ..., if（z-1）N≤x ＜ zN, then k=z-
1, if x is ＞ zN, k=z；If x is ＜ zN, described control chip controls described Brake energy recovery controller to adopt kN electric braking
Power participates in braking, if x >=zN, described control chip controls described Brake energy recovery controller to adopt zN electric braking force to participate in
Braking.
4. the control method of electric vehicle brake power recovery controller according to claim 3 is it is characterised in that described push away
If the rule that controls of bar also includes the full signal that control chip receives described Brake energy recovery controller, control described
The stroke of push rod is reduced to 0.
5. the control method of the electric vehicle brake power recovery controller according to claim 3 or 4 is it is characterised in that described
The control chip collection signal of step C also includes clutch switch signal and engine speed sensor signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634948.2A CN104442409B (en) | 2014-11-13 | 2014-11-13 | Electric vehicle braking energy recovery controller and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634948.2A CN104442409B (en) | 2014-11-13 | 2014-11-13 | Electric vehicle braking energy recovery controller and control method thereof |
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| Publication Number | Publication Date |
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| CN104442409A CN104442409A (en) | 2015-03-25 |
| CN104442409B true CN104442409B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410634948.2A Active CN104442409B (en) | 2014-11-13 | 2014-11-13 | Electric vehicle braking energy recovery controller and control method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043256B (en) * | 2016-07-11 | 2018-09-25 | 南京航空航天大学 | A kind of electric vehicle Electro-hydraulic brake system and its optimization method |
| CN111137136B (en) * | 2019-12-26 | 2023-05-02 | 的卢技术有限公司 | Braking response method and system for pure electric vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887954A (en) * | 1995-11-22 | 1999-03-30 | Mercedes Benz Ag | Vehicle brake-pressure control device for electrohydraulic multi-circuit brake system |
| CN1401515A (en) * | 2000-08-03 | 2003-03-12 | 丰田自动车株式会社 | Vehicle controlling device |
| CN103950445A (en) * | 2014-04-14 | 2014-07-30 | 同济大学 | Hydraulic double-motor driving electronic hydraulic braking system |
| CN104118329A (en) * | 2014-07-25 | 2014-10-29 | 奇瑞汽车股份有限公司 | Automobile braking energy recovery and control system and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014205645A1 (en) * | 2013-04-24 | 2014-10-30 | Robert Bosch Gmbh | Method for operating a brake system for a vehicle and control device for a brake system of a vehicle |
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2014
- 2014-11-13 CN CN201410634948.2A patent/CN104442409B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887954A (en) * | 1995-11-22 | 1999-03-30 | Mercedes Benz Ag | Vehicle brake-pressure control device for electrohydraulic multi-circuit brake system |
| CN1401515A (en) * | 2000-08-03 | 2003-03-12 | 丰田自动车株式会社 | Vehicle controlling device |
| CN103950445A (en) * | 2014-04-14 | 2014-07-30 | 同济大学 | Hydraulic double-motor driving electronic hydraulic braking system |
| CN104118329A (en) * | 2014-07-25 | 2014-10-29 | 奇瑞汽车股份有限公司 | Automobile braking energy recovery and control system and control method thereof |
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| CN104442409A (en) | 2015-03-25 |
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