CN108749551A - New-energy automobile four-drive hybrid electric control system - Google Patents
New-energy automobile four-drive hybrid electric control system Download PDFInfo
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- CN108749551A CN108749551A CN201810509671.9A CN201810509671A CN108749551A CN 108749551 A CN108749551 A CN 108749551A CN 201810509671 A CN201810509671 A CN 201810509671A CN 108749551 A CN108749551 A CN 108749551A
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- 230000007935 neutral effect Effects 0.000 claims abstract description 21
- 238000005183 dynamical system Methods 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims description 5
- 230000001172 regenerating effect Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
- B60W20/14—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion in conjunction with braking regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
-
- 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
- Y02T10/62—Hybrid vehicles
-
- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Hybrid Electric Vehicles (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
The invention discloses a kind of new-energy automobile four-drive hybrid electric control systems, including：Preceding Driving force system, rear Driving force system, VCU；Preceding Driving force system is the forerunner of six grades of ATM systems, and rear Driving force system is the rear-guard of two grades of pure electric systems of AMT；VCU controls the vehicle power distribution of preceding Driving force system and rear Driving force system and pattern determines；When VCU controls forerunner's power system operational, rear Driving force system hangs neutral gear；When VCU controls rear-guard power system operational, preceding Driving force system hangs neutral gear.The present invention is cooperated by preceding Driving force system and rear Driving force system, its work is controlled by VCU, it when power is met the requirements, is driven using rear Driving force system, is supplemented by preceding Driving force system first, and, when preceding Driving force system is flame-out, rear Driving force system can carry out energy regenerating, the whole dynamic property for improving vehicle, it is horizontal to improve fuel-economizing, reduces discharge.
Description
Technical field
The present invention relates to electric vehicle engineering field more particularly to a kind of new-energy automobile four-drive hybrid electric control systems
System.
Background technology
Since the mankind are higher and higher to the frequent degree of trip, oil is fewer and fewer, also more next to the quality requirement of air
Higher, energy saving and emission reduction is to realize the two principal themes of social sustainable development, in order to realize that two of energy saving and emission reduction are mainly appointed
It is engaged in, the every country in worldwide is all formulating corresponding target and milestone plan, and the U.S., Europe, Japan formulate not
Same target, formulates the corresponding index of each stage energy-saving emission reduction, our countries also formulate corresponding target, we will be 2020
Year reach 5 liters, reach 4 liters within 2025 as fuel consumption, how to meet these requirements, hybrid power, especially depth
The characteristics of build driven may be implemented in hybrid power, and energy regenerating may be implemented in pure electric vehicle, this is hybrid power is based on these
The energy-saving index of vehicle 35%, 45% may be implemented in feature.
The main car in a manner of series, parallel, series-parallel connection on the market at present, i.e., one drive of addition on conventional mechanisms
Dynamic motor or electric generator achieve the purpose that braking energy is contributed and recycled to auxiliary to reduce oil consumption and discharge, but mostly have one
A clear disadvantage, i.e., no matter under which kind of pattern working condition, motor is regardless of work or does not work, all can be passively with defeated
Shaft rotates with being fixedly connected；Since inertia itself is larger, so when motor passive rotation, engine can be lost always in motor
Output power.
Therefore, the prior art needs to improve.
Invention content
A technical problem to be solved of the embodiment of the present invention is：A kind of new-energy automobile four-drive hybrid electric control is provided
System processed, to solve problems of the prior art.
A kind of new-energy automobile four-drive hybrid electric control system provided by the invention, including：Preceding Driving force system, rear-guard
Dynamical system, whole-control system（VCU）；
The preceding Driving force system is the forerunner of six grades of ATM systems, after the rear Driving force system is two grades of pure electric system of AMT
It drives；
The VCU controls the vehicle power distribution of the preceding Driving force system and rear Driving force system and pattern determines；
When the VCU controls forerunner's power system operational, the rear Driving force system hangs neutral gear；
When the VCU controls the rear-guard power system operational, the preceding Driving force system hangs neutral gear.
In another embodiment based on the above-mentioned new-energy automobile four-drive hybrid electric control system of the present invention, the forerunner
Dynamical system includes engine, preceding bridge gearbox, front-wheel drive,
When the VCU controls the engine work, bridge gearbox hangs suitable gear, the front-wheel before the engine driving
Drive work.
In another embodiment based on the above-mentioned new-energy automobile four-drive hybrid electric control system of the present invention, the rear-guard
Dynamical system includes：Battery, motor, rear axle gearbox, rear wheel drive；
The battery provides electric energy for the motor, and the motor works under the control of the VCU, when the motor
When start-up operation, the rear wheel drive is driven to work by the rear axle gearbox.
In another embodiment based on the above-mentioned new-energy automobile four-drive hybrid electric control system of the present invention, the VCU
The distribution of vehicle power and pattern decision for controlling the preceding Driving force system and rear Driving force system include：
When the output power of Driving force system is more than driver's request power after described, driving force after the VCU controls are described
System works, and the preceding Driving force system hangs neutral gear；
The output power of Driving force system is less than driver and asks power, and the output power of preceding Driving force system when described after
When driver asks power, the VCU controls forerunner's power system operational, and the rear Driving force system hangs neutral gear；
When the rear wheel drive system and front-wheel drive system output power, which are respectively less than driver, asks power, the VCU controls
It makes the preceding Driving force system and rear Driving force system works at the same time.
In another embodiment based on the above-mentioned new-energy automobile four-drive hybrid electric control system of the present invention, the VCU
The distribution of vehicle power and pattern decision for controlling the preceding Driving force system and rear Driving force system further include：
When front-wheel skids, the preceding Driving force system hangs neutral gear, the rear Driving force system driving；
When rear wheels slip, the rear Driving force system output current is zero extension neutral gear, and the front-wheel drive system starts driving.
In another embodiment based on the above-mentioned new-energy automobile four-drive hybrid electric control system of the present invention, the VCU
The distribution of vehicle power and pattern decision for controlling the preceding Driving force system and rear Driving force system further include：
When the preceding Driving force system is flame-out, the rear Driving force system is in energy recuperation mode, forerunner's dynamical system
Unite and charge to Driving force system after described, the size of charge volume by friction disc brake and dynamic brake ratio-dependent.
Compared with prior art, the present invention includes following advantages：
The new-energy automobile four-drive hybrid electric control system of the present invention, it is mutual by preceding Driving force system and rear Driving force system
Cooperation, controls its work, preceding Driving force system works as power by engine driving, rear Driving force system by motor drive by VCU
It when meeting the requirements, is driven using rear Driving force system, is supplemented by preceding Driving force system first, also, in preceding Driving force system
When flame-out, rear Driving force system can carry out energy regenerating, and the whole dynamic property for improving vehicle improves fuel-economizing level, reduces discharge.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is the attached drawing used in technology description to do one simply to introduce, it should be apparent that, the accompanying drawings in the following description is of the invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of the new-energy automobile four-drive hybrid electric control system of the present invention.
In figure：Driving force system, 21 behind bridge gearbox, 13 front-wheel drives, 2 before Driving force system, 11 engines, 12 before 1
Battery, 22 motor, 23 rear axle gearboxes, 24 rear wheel drives, 3 VCU.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work, shall fall within the protection scope of the present invention.
It should be pointed out that each unit module in the present invention is hardware module, which part module although with
Information processing capability, according to different design requirements, it may be necessary to coordinate corresponding software to realize, still, these softwares are equal
For conventionally known software or well known technology.Involved various control units, collecting unit, encoder etc. can in the application
It to be achieved using application-specific integrated circuit and peripheral circuit, i.e., is realized using pure hardware mode, or uses existing chip
It realizes with peripheral circuit, works by loading existing software on chip, or according to the software that existing method is realized.
The inventive point of the present invention is the installation of modules, unit, the hardware annexation of device and each hardware
The variation etc. of position, and distinctive connection relation and additional space relationship are formed, without auxiliary when using application-specific integrated circuit
Help software that can also realize, though it is specific use in need corresponding software its if be intended only as the present invention in concrete application field
Coordinated with other parts in scape, coordinated, more preferably to realize the effect of the present invention in the application, the inventive point with the present invention
It is unrelated, meanwhile, if coordinate software using existing chip come work, used software, processing method are existing soft
Part and method, the invention effect and destination that the present invention is realized are realized also not dependent on software, but pass through hardware construction
It improves to realize goal of the invention, also, the realization of invention effect and purpose that the present invention is realized is also not dependent on software, but
Goal of the invention is realized by the improvement of hardware construction, and scope of the present invention is not related to software itself, and
The only connection relation of various pieces and relative tertiary location relationship.
With reference to the accompanying drawings and examples to a kind of new-energy automobile four-drive hybrid electric control system provided by the invention
It is described in more detail.
Fig. 1 is the structural schematic diagram of one embodiment of the new-energy automobile four-drive hybrid electric control system of the present invention,
As shown in Figure 1, the new-energy automobile four-drive hybrid electric control system of the embodiment includes：Preceding Driving force system 1, rear driving force
System 2, VCU 3；
The preceding Driving force system 1 is the forerunner of six grades of ATM systems, and the rear Driving force system 2 is two grades of pure electric systems of AMT
Rear-guard；
The VCU 3 controls the vehicle power distribution of the preceding Driving force system 1 and rear Driving force system 2 and pattern determines；
When the VCU 3, which controls the preceding Driving force system 1, to work, the rear Driving force system 2 hangs neutral gear；
When the VCU 3, which controls the rear Driving force system 2, to work, the preceding Driving force system 1 hangs neutral gear.
The preceding Driving force system 1 includes engine 11, preceding bridge gearbox 12, front-wheel drive 13,
When the VCU 3, which controls the engine 11, to work, bridge gearbox 12 hangs suitable gear before the engine 11 drives,
The front-wheel drive 13 works.
Driving force system 2 includes after described：Battery 21, motor 22, rear axle gearbox 23, rear wheel drive 24；
The battery 21 is that the motor 22 provides electric energy, and the motor 22 works under the control of the VCU 3, works as institute
When stating the start-up operation of motor 22, the rear wheel drive 24 is driven to work by the rear axle gearbox 23.
The VCU 3 controls the vehicle power distribution of the preceding Driving force system 1 and rear Driving force system 2 and pattern determines
Including：
When the output power of Driving force system 2 is more than driver's request power after described, driving after the VCU3 controls are described
Force system 2 works, and the preceding Driving force system 1 hangs neutral gear；
The output power of Driving force system 2 is less than driver and asks power, and the output power of preceding Driving force system 1 when described after
When asking power more than driver, the VCU 3 controls the preceding Driving force system 1 and works, and the rear Driving force system 2 hangs sky
Shelves；
When the rear wheel drive system 2 and 1 output power of front-wheel drive system, which are respectively less than driver, asks power, the VCU
The 3 controls preceding Driving force system 1 and rear Driving force system 2 work at the same time.
The VCU 3 controls the vehicle power distribution of the preceding Driving force system 1 and rear Driving force system 2 and pattern determines
Further include：
When front-wheel skids, the preceding Driving force system 1 hangs neutral gear, and the rear Driving force system 2 drives；
When rear wheels slip, rear 2 output current of Driving force system is zero extension neutral gear, and the front-wheel drive system 1, which starts, drives
It is dynamic.
The VCU 3 controls the vehicle power distribution of the preceding Driving force system 1 and rear Driving force system 2 and pattern determines
Further include：
When the preceding Driving force system 1 stops working, the rear Driving force system 2 is in energy recuperation mode, the preceding driving force
System 1 charges to Driving force system 2 after described, the size of charge volume by friction disc brake and dynamic brake ratio-dependent.
The inefficient area of Driving force system 1, the work(of the battery 21 and motor 22 of rear Driving force system 2 before vehicle operates in
When rate is more than driver's request power, it is operated alone using rear Driving force system 2, such as starting, low speed, low torque, preceding bridging
12 neutral gear of fast case or clutch are opened；When after 2 maximum power of Driving force system ask power but forerunner's dynamical system less than driver
When 1 power of uniting is more than driver's request power, it is operated alone by preceding Driving force system 1,2 neutral gear of rear Driving force system；After drive
Under 2 fault mode of Force system, preceding Driving force system 1 can be operated under the torque of speed related with speed and operator demand
Vehicle is operated alone, preceding bridge gearbox 12 hangs suitable gear；When the braking of driver's needs but system cannot generate electricity or generated output
When being restricted, the fully closed throttle increase engine respiratory resistance help of low gear can be used and brake；Under equal dynamic modes, need enough
Power, preceding Driving force system 1 and 2 isolated operation of rear Driving force system is all inadequate or preceding Driving force system 1 has to enter into high oil consumption
Qu Shi, preceding Driving force system 1 and rear Driving force system 2 are operated together.Driving force system 2 is operated in the best effective under the speed afterwards
Rate loads point, 2 output power of Driving force system after adjusting；When front-wheel skids, the flame-out emptying gear of preceding Driving force system 1 is rear to drive
Force system 2 drives；When rear wheels slip, the electric current of rear Driving force system 2 is zero emptying gear, and preceding Driving force system 1 starts driving.But
Driving force system 1 is had any problem before starting in short time；When Driving force system 2 drives vehicle to advance afterwards, preceding Driving force system 1 hangs 1
Shelves, gradually before engagement Driving force system 1 clutch, it is counter drag before after Driving force system 1 to certain speed, driving before oil spout starts
Force system 1.When the reversion of Driving force system 2 is fallen back afterwards, Driving force system 1 before not starting, if Driving force system 1 before starting,
Driving force system 1 before reversing gear startup must be hung.
Brake pedal is once operated, and preceding Driving force system 1 is flame-out, and rear Driving force system 2 is under energy recuperation mode,
Driving force system 2 charges afterwards, and the size of generated energy is determined by brake force size and safety, adjusts friction disc brake and power generation is made
Dynamic ratio, the electricity multiple as possible under safety condition.Charging peaks, which are less than, allows charging current；When descending speed is higher than some value
When, power generation is slowed down；When rear Driving force system 2 being needed to slow down, the energy is recycled in dynamic brake, and rear Driving force system 2 is accelerated to slow down；When
When battery power shortage, or before need to changing when the load point of Driving force system 1, preceding Driving force system 1 drives vehicle, rear Driving force system
2 charge the battery in generating state.This coupled modes generating efficiency is relatively low, and tire wear increases.But it is adjusted and starts
The load point of machine, the thermal efficiency of Driving force system 1 before improving, reduces discharge.
The characteristics of four-drive hybrid electric control system is the whole dynamic property for improving vehicle.If 1 peak of preceding Driving force system
Value power is 100kW, and the peak power of rear Driving force system 2 is 40kW, while when driving, and total maximum power of vehicle improves
40%.In fact, the maximum power of the two is happened on the same rotating speed, so under different rotating speeds, four-wheel drive system increases
Power proportions be variation.Simultaneously when driving, it is very big to increase ratio for torque when low speed, is especially advantageous for high speed and starts to walk.From 0-
The accelerating ability of 50km/h can greatly improve.The low speed followability of vehicle is fine.Starting quickly, smoothly, comfortably, can be with pure electric vehicle
Top grade is run to, the shift number of Driving force system 1 gearbox low grade before reducing reduces clutch abrasion.In urban district traffic congestion mould
Formula stays enough electricity for starting to walk, and does not have to stay many electricity on expressway, and Driving force system 1 works in low oil consumption area before avoiding, and improves section
Oil level reduces discharge；It can generate electricity and carry out energy regenerating；Power interruption shift is eliminated, it is simpler than DCT；Four-wheel drive can prevent
There is the case where cannot being travelled when tyre slip, redundancy, reliability be not high for driving.
A kind of new-energy automobile four-drive hybrid electric control system provided by the present invention is described in detail above,
Principle and implementation of the present invention are described for specific case used herein, and the explanation of above example is only used
In facilitating the understanding of the method and its core concept of the invention；Meanwhile for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as
Limitation of the present invention.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of new-energy automobile four-drive hybrid electric control system, which is characterized in that including：
Preceding Driving force system, rear Driving force system, whole-control system（VCU）；
The preceding Driving force system is the forerunner of six grades of ATM systems, after the rear Driving force system is two grades of pure electric system of AMT
It drives；
The VCU controls the vehicle power distribution of the preceding Driving force system and rear Driving force system and pattern determines；
When the VCU controls forerunner's power system operational, the rear Driving force system hangs neutral gear；
When the VCU controls the rear-guard power system operational, the preceding Driving force system hangs neutral gear.
2. new-energy automobile four-drive hybrid electric control system according to claim 1, which is characterized in that driving before described
Force system includes engine, preceding bridge gearbox, front-wheel drive,
When the VCU controls the engine work, bridge gearbox hangs suitable gear, the front-wheel before the engine driving
Drive work.
3. new-energy automobile four-drive hybrid electric control system according to claim 1, which is characterized in that driving after described
Force system includes：Battery, motor, rear axle gearbox, rear wheel drive；
The battery provides electric energy for the motor, and the motor works under the control of the VCU, when the motor
When start-up operation, the rear wheel drive is driven to work by the rear axle gearbox.
4. new-energy automobile four-drive hybrid electric control system according to claim 1, which is characterized in that the VCU controls
The distribution of vehicle power and pattern decision for making the preceding Driving force system and rear Driving force system include：
When the output power of Driving force system is more than driver's request power after described, driving force after the VCU controls are described
System works, and the preceding Driving force system hangs neutral gear；
The output power of Driving force system is less than driver and asks power, and the output power of preceding Driving force system when described after
When driver asks power, the VCU controls forerunner's power system operational, and the rear Driving force system hangs neutral gear；
When the rear wheel drive system and front-wheel drive system output power, which are respectively less than driver, asks power, the VCU controls
It makes the preceding Driving force system and rear Driving force system works at the same time.
5. new-energy automobile four-drive hybrid electric control system according to claim 4, which is characterized in that the VCU controls
The distribution of vehicle power and pattern decision for making the preceding Driving force system and rear Driving force system further include：
When front-wheel skids, the preceding Driving force system hangs neutral gear, the rear Driving force system driving；
When rear wheels slip, the rear Driving force system output current is zero extension neutral gear, and the front-wheel drive system starts driving.
6. new-energy automobile four-drive hybrid electric control system according to claim 4, which is characterized in that the VCU controls
The distribution of vehicle power and pattern decision for making the preceding Driving force system and rear Driving force system further include：
When the preceding Driving force system is flame-out, the rear Driving force system is in energy recuperation mode, forerunner's dynamical system
Unite and charge to Driving force system after described, the size of charge volume by friction disc brake and dynamic brake ratio-dependent.
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| CN117681856A (en) * | 2024-02-04 | 2024-03-12 | 西南交通大学 | Energy management control method based on whole vehicle torque demand and electric quantity state |
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