CN108725259A - A kind of big slope starting control system of novel 4 wheel driven pure electric coach - Google Patents
A kind of big slope starting control system of novel 4 wheel driven pure electric coach Download PDFInfo
- Publication number
- CN108725259A CN108725259A CN201810665523.6A CN201810665523A CN108725259A CN 108725259 A CN108725259 A CN 108725259A CN 201810665523 A CN201810665523 A CN 201810665523A CN 108725259 A CN108725259 A CN 108725259A
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- China
- Prior art keywords
- automatically controlled
- guard
- motor
- forerunner
- semiaxis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002243 precursor Substances 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Classifications
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2072—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for drive off
- B60L15/2081—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for drive off for drive off on a slope
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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 discloses a kind of novel big slope starting control systems of 4 wheel driven pure electric coach, including ramp sensor, entire car controller, CAN bus, precursor motor, rear-guard motor, power battery, forerunner is automatically controlled, rear-guard is automatically controlled, dynamic wire harness and semiaxis, the ramp sensor is connected by CAN bus with entire car controller, entire car controller is corresponded to automatically controlled and rear-guard is automatically controlled is connected with forerunner by CAN bus, forerunner is automatically controlled to be connected with precursor motor, rear-guard is automatically controlled to be connected with rear-guard motor, power battery is corresponded to automatically controlled and rear-guard is automatically controlled is connected with forerunner by dynamic wire harness, precursor motor is connected by differential mechanism with two semiaxis, rear-guard motor is connected by differential mechanism with two semiaxis.The present invention can effectively reduce the difficulty of driver driving operation, can make full use of the predisposed condition of 4 wheel driven to ensure the comfort driven.
Description
Technical field：
The present invention relates to a kind of novel big slope starting control systems of 4 wheel driven pure electric coach.
Background technology：
Existing pure electric coach must will touch on the brake in big slope starting-up process, and be in this case, anti-to slip by slope
Function cannot be activated.That is driver is in the state that touches on the brake and also to step on the throttle, and such case is for pure electric vehicle visitor
Vehicle is not allow to occur, while brake pedal and gas pedal vehicle will appear failure, therefore there is presently no appearance
The big hill start step strategy of 4 wheel driven pure electric coach.
The anti-function that slips by slope of pure electric coach is not particularly suited for big hill start step at present, and current way is specific as follows：
It is as follows that vehicle enters the anti-condition slipped by slope：
1) vehicle Ready is effective；
2) D grades/R grades effectively；
3) parking brake is invalid；
4) braking is invalid；
5) throttle is invalid；
6) motor speed is opposite with gear rotating speed of target；
Above be and relationship.When vehicle meets above-mentioned condition, vehicle, which is defaulted as entering, to be prevented slipping by slope function, automatically controlled adaptive
Torque is answered to make vehicle in the state not come down and then reach the anti-function of slipping by slope, is then exited when there is throttle signal anti-slip
Slope.The process is the need for the response time, that is to say, that exits that anti-to slip by slope the torque that response entire car controller is sent out be sometimes
Between be spaced, and at this time vehicle be in big hill start step inherently slide backward suddenly.The drawbacks of situation, is mainly as follows：Vehicle start mistake
Journey is unstable, it is desirable that driver operates horizontal high；It causes energy loss serious, serious (vehicle rollback process is damaged to motor
Need to execute advance large torque), in view of the drawback of the above strategy, it is proposed that a kind of novel big hill start step control of 4 wheel driven pure electric coach
System processed.
Invention content：
The present invention is that provide a kind of novel 4 wheel driven pure electric coach to solve the above-mentioned problems of the prior art big
Slope starting control system.
The technical solution adopted in the present invention has：A kind of big slope starting control system of novel 4 wheel driven pure electric coach, including
Ramp sensor, entire car controller, CAN bus, precursor motor, rear-guard motor, power battery, forerunner is automatically controlled, rear-guard is automatically controlled, dynamic
Flux of force lines and semiaxis, the ramp sensor are connected by CAN bus with entire car controller, and entire car controller passes through CAN bus
Corresponding automatically controlled with forerunner and rear-guard is automatically controlled is connected, forerunner is automatically controlled to be connected with precursor motor, and rear-guard is automatically controlled to be connected with rear-guard motor, dynamic
Power battery is corresponded to automatically controlled and rear-guard is automatically controlled is connected with forerunner by dynamic wire harness, and precursor motor passes through differential mechanism and two semiaxis phases
Even, rear-guard motor is connected by differential mechanism with two semiaxis.
Further, the output voltage of the power battery is 576V.
The present invention has the advantages that：
The present invention can effectively reduce the difficulty of driver driving operation, and the predisposed condition of 4 wheel driven can be made full use of
Ensure the comfort driven.
Description of the drawings：
Fig. 1 is the structural schematic diagram of control system of the present invention.
Fig. 2 is the energy diagram of present invention driving procedures system.
Fig. 3 is that the big hill start of four-wheel drive cars walks force analysis.
Fig. 4 is that the big hill start of four-wheel drive cars walks schematic diagram.
In figure：
1, ramp sensor；2, entire car controller；3, CAN bus；4, precursor motor；5, rear-guard motor；6, power battery；
7, forerunner is automatically controlled；8, rear-guard is automatically controlled；9, dynamic wire harness；10, semiaxis；F:Holding power of the ramp to vehicle；G：Vehicle its own gravity
Component on the slope；T：Effective traction；f：Wind resistance and frictional force；a：The gradient；1：Ramp sensor 11：4-wheel driven car
?.
Specific implementation mode：
The present invention will be further described below with reference to the drawings.
As shown in Figure 1 to Figure 4, a kind of novel big slope starting control system of 4 wheel driven pure electric coach of the present invention, including ramp sensing
Device 1, entire car controller 2, CAN bus 3, precursor motor 4, rear-guard motor 5, power battery 6, forerunner are automatically controlled 7, rear-guard is automatically controlled 8, dynamic
Flux of force lines 9 and semiaxis 10, ramp sensor 1 are connected by CAN bus 3 with entire car controller 2, and entire car controller 2 is total by CAN
The correspondence of line 3 is connected with forerunner automatically controlled 7 and rear-guard automatically controlled 8, and forerunner automatically controlled 7 is connected with precursor motor 4, rear-guard automatically controlled 8 and rear-guard electricity
Machine 5 is connected, and power battery 6 is corresponded to by dynamic wire harness 9 to be connected with forerunner automatically controlled 7 and rear-guard automatically controlled 8, and precursor motor 4 passes through difference
Fast device is connected with two semiaxis 10, and rear-guard motor 5 is connected by differential mechanism with two semiaxis 10.
The output voltage of power battery 6 is 576V.
The basic functional principle of the present invention is as follows：
1) it is specifically defined the range of gradient a, such as following table first：
2) big hill start walks torque arithmetic, as follows：
As shown in figure 3, the precondition that vehicle is not buffered in big hill start step is to remain static, that just must satisfy
The component of f=T, i.e. motor driving torque and complete vehicle quality balance each other with resistance, need to meet the following conditions：
F=T is 1.
Transmission efficiency is indicated with η, Tm indicates that motor actual torque, T1/T2 indicate front and back motor actual torque, vehicle respectively
Gross mass M, component on the slope then have for Mg：
T=η * Tm Tm=T1+T2 T=f+Mg are 3.
Remarks：The front and back parameter of electric machine is completely the same.
3) big hill start step strategy：
When entire car controller receives ramp sensor gradient a >=8 °, entire car controller starts to wake up big hill start step shape
State, when current, rear-guard motor rotating speed=0, vehicle meets big hill start step condition：
(1) D grades effectively；
(2)a≥8°；
(3) motor speed is 0；
(4) R grades it is invalid；
Above be and relationship, vehicle walks into big hill start, and R grade effectively release big hill start and walk, and accelerator and brake signal cannot
Simultaneously effectively.Vehicle be in big hill start step state, in spite of have parking brake signal, brake signal and throttle signal VCU all by
(theoretical value, actually subject to sample car debugging) is executed according to T torques, vehicle is made to remain static.Journey of correcting one's mistakes needs carry out one
Lower judgement：
(1) T is less than single motor peak torque Tt, and vehicle sends single motor work (work of rear-guard motor)；
(2) T is more than or equal to motor peak torque Tt, and vehicle is averagely allocated to front and back motor according to vehicle aggregate demand torque；
When in uphill starting condition, vehicle control when the required torque of throttle signal is less than the torque for meeting stationary vehicle
Device processed is then not responding to the signal, only just can perform when demand torque is more than vehicle stationary state demand torque.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as the present invention's
Protection domain.
Claims (2)
1. a kind of big slope starting control system of novel 4 wheel driven pure electric coach, it is characterised in that：Including ramp sensor (1), whole
Vehicle controller (2), CAN bus (3), precursor motor (4), rear-guard motor (5), power battery (6), forerunner automatically controlled (7), rear-guard electricity
Control (8), dynamic wire harness (9) and semiaxis (10), the ramp sensor (1) pass through CAN bus (3) and entire car controller (2) phase
Even, entire car controller (2) is connected by CAN bus (3) corresponding (7) automatically controlled with forerunner and rear-guard automatically controlled (8), and forerunner is automatically controlled (7)
It is connected with precursor motor (4), rear-guard automatically controlled (8) is connected with rear-guard motor (5), and power battery (6) is corresponding by dynamic wire harness (9)
(7) automatically controlled with forerunner and rear-guard automatically controlled (8) are connected, and precursor motor (4) is connected by differential mechanism with two semiaxis (10), rear-guard electricity
Machine (5) is connected by differential mechanism with two semiaxis (10).
2. the novel big slope starting control system of 4 wheel driven pure electric coach as described in claim 1, it is characterised in that：The power
The output voltage of battery (6) is 576V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810665523.6A CN108725259A (en) | 2018-06-26 | 2018-06-26 | A kind of big slope starting control system of novel 4 wheel driven pure electric coach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810665523.6A CN108725259A (en) | 2018-06-26 | 2018-06-26 | A kind of big slope starting control system of novel 4 wheel driven pure electric coach |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108725259A true CN108725259A (en) | 2018-11-02 |
Family
ID=63930605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810665523.6A Pending CN108725259A (en) | 2018-06-26 | 2018-06-26 | A kind of big slope starting control system of novel 4 wheel driven pure electric coach |
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| Country | Link |
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| CN (1) | CN108725259A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660831A (en) * | 2020-06-29 | 2020-09-15 | 北京博格华纳汽车传动器有限公司 | Four-wheel-drive gradient torque control method and device and four-wheel-drive vehicle |
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|---|---|---|---|---|
| CN204547776U (en) * | 2015-04-22 | 2015-08-12 | 姜守强 | The electronlmobil of rotation traveling is driven without the need to change speed gear box 4 wheel driven or two |
| CN104875742A (en) * | 2015-05-15 | 2015-09-02 | 北汽福田汽车股份有限公司 | Hill starting control method, system of double-model HEV (Hybrid Electric Vehicle) and HEV |
| CN205239188U (en) * | 2015-12-03 | 2016-05-18 | 康迪电动汽车（长兴）有限公司 | Driving device for electric automobile |
| CN106976411A (en) * | 2017-04-17 | 2017-07-25 | 深圳市瀚路新能源汽车有限公司 | Upward slope householder method and device |
| CN208324909U (en) * | 2018-06-26 | 2019-01-04 | 南京恒天领锐汽车有限公司 | A kind of big slope starting control system of novel 4 wheel driven pure electric coach |
| US20200055409A1 (en) * | 2016-11-28 | 2020-02-20 | Byd Company Limited | Vehicle, vehicle slope assist system, and control method thereof |
-
2018
- 2018-06-26 CN CN201810665523.6A patent/CN108725259A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204547776U (en) * | 2015-04-22 | 2015-08-12 | 姜守强 | The electronlmobil of rotation traveling is driven without the need to change speed gear box 4 wheel driven or two |
| CN104875742A (en) * | 2015-05-15 | 2015-09-02 | 北汽福田汽车股份有限公司 | Hill starting control method, system of double-model HEV (Hybrid Electric Vehicle) and HEV |
| CN205239188U (en) * | 2015-12-03 | 2016-05-18 | 康迪电动汽车（长兴）有限公司 | Driving device for electric automobile |
| US20200055409A1 (en) * | 2016-11-28 | 2020-02-20 | Byd Company Limited | Vehicle, vehicle slope assist system, and control method thereof |
| CN106976411A (en) * | 2017-04-17 | 2017-07-25 | 深圳市瀚路新能源汽车有限公司 | Upward slope householder method and device |
| CN208324909U (en) * | 2018-06-26 | 2019-01-04 | 南京恒天领锐汽车有限公司 | A kind of big slope starting control system of novel 4 wheel driven pure electric coach |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660831A (en) * | 2020-06-29 | 2020-09-15 | 北京博格华纳汽车传动器有限公司 | Four-wheel-drive gradient torque control method and device and four-wheel-drive vehicle |
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| PB01 | Publication | ||
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Application publication date: 20181102 |