CN107745632A - Oily the electrohydraulic mixed power system and different working modes conversion method that antero posterior axis independently drives - Google Patents
Oily the electrohydraulic mixed power system and different working modes conversion method that antero posterior axis independently drives Download PDFInfo
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- CN107745632A CN107745632A CN201711046232.0A CN201711046232A CN107745632A CN 107745632 A CN107745632 A CN 107745632A CN 201711046232 A CN201711046232 A CN 201711046232A CN 107745632 A CN107745632 A CN 107745632A
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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
- B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
- B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
-
- 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
- B60K6/44—Series-parallel type
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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
- Y02T10/62—Hybrid vehicles
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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
- Y02T10/80—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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Oily the electrohydraulic mixed power system and different working modes conversion method that a kind of antero posterior axis of the present invention independently drives, belong to vehicle hybrid field, the system includes front axle oil electric mixed dynamic and rear axle electrohydraulic mixed power.In automobile front-axle, engine is connected by after preceding shaft clutch and front axle motor parallel, then by gearbox with front axle differential；In vehicle rear axle, hydraulic pump/motor is connected by after rear shaft clutch and rear axle motor parallel, then by rear axle main reducing gear/differential assembly.Being introduced into for the system hydraulic pressure unit can increase the energy recovery rate of vehicle during vehicle is braked, reduce the current loss of axle motor and weaken the impact of charged/discharged current versus cell in driving/energy recovery process, during driving, vehicles dynamic performance can be strengthened.Axle independently drives the passing through property for also enhancing vehicle.
Description
Technical field
The invention belongs to vehicle hybrid technical field, is related to oil, electricity, hydraulic hybrid type power system, and in particular to a kind of
Oily the electrohydraulic mixed power system and different working modes conversion method that antero posterior axis independently drives.
Background technology
With increasingly sharpening for environment and energy problem, and the limitation of automobile fuel consumption, Abgasgesetz is more and more stricter, mixes
Power vehicle is closed increasingly by from every field to be paid attention to.Hybrid vehicle is distinguished from energy-storage travelling wave tube, Ke Yifen
For the oil electric mixed dynamic using electric energy storage and two kinds of the hydraulic hybrid using hydraulic accumulation energy.It is most widely used at present
For oil electric mixed dynamic system, and type of drive is generally forerunner.However, using batteries to store energy vehicle can be caused to rise merely
Larger electric discharge and charging current are produced in step and braking procedure, influences the service life of battery.On the other hand, braking energy returns
During receipts, due to the limitation of motor and battery, energy recovery rate is frequently not very high.
The hydraulic accumulation energy system that hydraulic hybrid power system uses uses hydraulic accumulator as energy-storage travelling wave tube.Hydraulic energy-accumulating
The power density of device is high, possesses the ability of very strong quick charge and discharge energy.Accordingly, it is appreciated that provided in Vehicle Starting Process big
Braking energy is absorbed in power drive, and braking procedure.But the energy density of hydraulic accumulator is too small, it is unfavorable for persistently
Charge and discharge energy.
Therefore, this patent is to solve the above problems, propose a kind of antero posterior axis independent driving system of the electro-hydraulic mixing of oil, with same
When meet the requirement of high power density and high-energy-density.Also, the system is independently driven using antero posterior axis, and antero posterior axis can divide
Do not control so that vehicle possesses preferably driving and braking nonslip properties, and can strengthen the passing through property of vehicle.
In disclosed patent, patent CN201010571032.9 disclose it is a kind of first oil it is electrically coupled in series, then with hydraulic pressure system
System power system for mechanical-electrical-liquid hybrid-driven vehicle in parallel, using single shaft-driven mode.Patent CN201410008743.3 is public
A kind of electro-hydraulic four-wheel-drive hybrid power system of oil and control method are opened.Internal combustion engine uses planet Volleyball Association with motor in its scheme
Connect, it is then in parallel with hydraulic system, and distribute power to front and back wheel using same axis and realize vehicle 4 wheel driven, its structure is omited
Aobvious complexity.Patent CN201320795429.5 discloses a kind of hybrid power transmission system of the electric hydrostatic Composite Transmission of oil, passes through
The power coupling mechanism of a set of similar manual transmission realizes different transmission modes, but its structure is also extremely complex.
The content of the invention
In view of this, a kind of independently driven it is an object of the invention to provide antero posterior axis oily electrohydraulic mixed power system and
Different working modes conversion method, being mixed using preceding shafting oil electricity, the antero posterior axis of the electro-hydraulic mixing of rear axle or independent hydraulic pressure independently drives,
Its structure and coupled modes are relatively easy, and existing power is overcome while making full use of electric energy storage and hydraulic accumulation energy system advantage
The above-mentioned deficiency of system.
To reach above-mentioned purpose, the present invention provides following technical scheme：
The present invention provides the oily electrohydraulic mixed power system that a kind of antero posterior axis independently drives, including gearbox and battery, also
Rear axle including the front axle oil electric mixed dynamic being independently connected with automobile front-axle by gearbox and with vehicle rear axle independent connection
Electrohydraulic mixed power, the front axle oil electric mixed dynamic include engine and preceding spindle motor, for providing driving force simultaneously to front axle
By the braking energy of preceding spindle motor recovery vehicle front axle；The rear axle electrohydraulic mixed power includes hydraulic pressure unit and rear spindle motor,
For providing driving force to rear axle and the braking energy of vehicle rear axle being absorbed by hydraulic pressure unit；Wherein, the engine and front axle
Pass through preceding shaft clutch parallel coupled between motor；Pass through rear shaft clutch parallel coupled between the hydraulic pressure unit and rear spindle motor；
The hydraulic pressure unit is made up of hydraulic pump/motor, high pressure accumulator, low pressure accumulator, control valve group；The battery and front axle electricity
Machine and rear spindle motor connect respectively.
Using such scheme, the hydraulic pump/motor in the system had both been operable with pump condition and has been used to reclaim braking energy,
It is used to drive vehicle rear axle available for motor operating conditions.The different driving pattern of the system includes：It can be operated alone by engine；Can
It is operated alone by preceding spindle motor or rear spindle motor；It can be driven simultaneously by preceding spindle motor and rear spindle motor；Can be by hydraulic pump/motor list
Solely driving；It can be driven jointly by engine and preceding spindle motor and/or rear spindle motor；Can by preceding spindle motor and/or rear spindle motor with
Hydraulic pump/motor drives jointly；It can be driven jointly by engine and hydraulic pump/motor；Can by engine, preceding spindle motor and/or
Spindle motor and hydraulic pump/motor drive jointly afterwards.The regenerative braking of the system, which absorbs braking energy, to be included：Can by hydraulic pump/
Motor reclaims braking energy as energy conversion device；It can be returned by preceding spindle motor and/or rear spindle motor as energy conversion device
Receive braking energy；It can be reclaimed and braked collectively as energy conversion device by hydraulic pump/motor and preceding spindle motor and/or rear spindle motor
Energy.
Further, the parallel coupled is using coaxial parallel-connection coupling or twin shaft parallel coupled.
Further, the preceding spindle motor, rear spindle motor use AC induction motor or magneto.
Further, the gearbox is manual-automatic integral gearbox AMT, automatic gear-box AT, electrodeless variable-speed gearbox CVT
Or double clutch gearbox DCT.
The different working modes for the oily electrohydraulic mixed power system that the present invention is also independently driven using above-mentioned antero posterior axis turn
Method is changed, is specifically included：
1) vehicle start or acceleration driving；
1.1. judge whether pressure is less than setting value in low pressure accumulator, if being less than setting value, hydraulic pump/motor can not
Participate in driving process；Battery soc values are judged again, if battery soc values are again smaller than setting minimum value, preceding spindle motor and/or rear axle
Motor can not also participate in driving process, now only be started or accelerating vehicle by engine；
1.2. when hydraulic pump/motor can not participate in driving and battery soc values are higher than setting minimum value, then front axle electricity is judged
Can machine and/or rear spindle motor provide the driving force needed for vehicle, if driving force needed for vehicle can completely by preceding spindle motor and/or
Spindle motor provides afterwards, then is driven by preceding spindle motor and/or rear spindle motor；If driving force needed for vehicle can not be completely by preceding spindle motor
And/or rear spindle motor provides, then is driven jointly with engine by preceding spindle motor and/or rear spindle motor；
If 1.3. hydraulic pump/motor can participate in driving, i.e., low pressure accumulator pressure then needs to judge higher than setting minimum value
Whether the driving force that hydraulic pump/motor is provided provides the driving force that vehicle accelerates or starting is required enough, vehicles if enough
Only driven by hydraulic pump/motor；Need to judge that can preceding spindle motor and/or rear spindle motor participate in driving if deficiency, i.e. battery soc
Whether value is higher than minimum value is set, and preceding spindle motor and/or rear spindle motor can not provide driving force, then vehicle is by hydraulic pump/motor
Driven jointly with engine；If preceding spindle motor and/or rear spindle motor can provide driving force, before judging spindle motor and/or after
Can spindle motor supply the inadequate part driving force of hydraulic system, if preceding spindle motor and/or rear axle motor driving force are enough,
Driven jointly with hydraulic pump/motor by preceding spindle motor and/or rear spindle motor, if preceding spindle motor and/or rear axle motor driving force are not
It is enough, then it need to be driven jointly by hydraulic pump/motor, preceding spindle motor and/or rear spindle motor and engine；
2) vehicle deceleration or braking driving；
2.1. judge that can hydraulic pressure unit absorb braking energy according to high pressure accumulator pressure, if high pressure accumulator pressure reaches
To maximum is set, then hydraulic pump/motor does not reabsorb energy；If hydraulic pump/motor can continue to absorb braking energy, need
Judge whether the brake force that hydraulic pump/motor is provided meets required brake force, can be independent by hydraulic pump/motor if meeting
Braking；
If the brake force that 2.2. hydraulic pump/motor is provided can not meet required brake force, battery soc should be first judged
Whether value is more than set definite value, if battery soc values are more than setting value, preceding spindle motor and/rear spindle motor can not provide any system
Power, required brake force is now provided jointly by hydraulic pump/motor and friction braking system；If battery soc values are in setting value
Hereinafter, i.e., battery is in chargeable scope, then whether spindle motor and/or rear axle motor braking power can supply hydraulic pressure before should judging
The inadequate brake force of pump/motor, if preceding spindle motor and/or rear axle motor braking power are enough, vehicle is regenerated by hydraulic pump/motor
Braking is braked jointly with preceding spindle motor and/or rear spindle motor regenerative braking, if preceding spindle motor and/or rear axle motor braking power are not
Foot, then vehicle braking procedure is by hydraulic pump/motor regenerative braking, preceding spindle motor and/or rear spindle motor regenerative braking and friction
Braking is common to be completed；
2.3. if high pressure accumulator pressure can not absorb braking energy higher than the maximum set, hydraulic pump/motor；This
Shi Shouxian judges that can preceding spindle motor and/or rear spindle motor absorb braking energy according to whether battery soc values are more than setting value, if
Can not, then vehicle braking procedure is all completed by friction catch；If preceding spindle motor and/or rear spindle motor can absorb Brake Energy
Amount, then can spindle motor and/or rear axle motor braking power provide whole brake force before judging, if can if brake can be by front axle
Motor and/or rear axle motor braking are completed, and braking procedure is made by preceding spindle motor and/or rear axle motor braking and friction if not all right
Dynamic common completion.
The present invention also provides the oily electrohydraulic mixed power system that another antero posterior axis independently drives, including gearbox and
Battery, in addition to the front axle oil electric mixed dynamic that is independently connected with automobile front-axle by gearbox and be independently connected with vehicle rear axle
The independent hydraulic power of rear axle, the front axle oil electric mixed dynamic includes engine and preceding spindle motor, for providing drive to front axle
Power and by the braking energy of preceding spindle motor recovery vehicle front axle；The independent hydraulic power of rear axle includes hydraulic pressure unit, is used for
Driving force is provided to rear axle and the braking energy of vehicle rear axle is absorbed by hydraulic pressure unit；Wherein, the engine and preceding spindle motor
Between pass through preceding shaft clutch parallel coupled；The hydraulic pressure unit is connected between vehicle rear axle by rear shaft clutch；The hydraulic pressure
Unit is made up of hydraulic pump/motor, high pressure accumulator, low pressure accumulator, control valve group；The battery and front axle motor connection.
Using such scheme, the hydraulic pump/motor in the system had both been operable with pump condition and has been used to reclaim braking energy,
It is used to drive vehicle rear axle available for motor operating conditions.The different driving pattern of the system includes：It can be operated alone by engine；Can
It is operated alone by preceding spindle motor or rear spindle motor；It can be driven simultaneously by preceding spindle motor and rear spindle motor；Can be by hydraulic pump/motor list
Solely driving；It can be driven jointly by engine and preceding spindle motor and/or rear spindle motor；Can by preceding spindle motor and/or rear spindle motor with
Hydraulic pump/motor drives jointly；It can be driven jointly by engine and hydraulic pump/motor；Can by engine, preceding spindle motor and/or
Spindle motor and hydraulic pump/motor drive jointly afterwards.The regenerative braking of the system, which absorbs braking energy, to be included：Can by hydraulic pump/
Motor reclaims braking energy as energy conversion device；It can be returned by preceding spindle motor and/or rear spindle motor as energy conversion device
Receive braking energy；It can be reclaimed and braked collectively as energy conversion device by hydraulic pump/motor and preceding spindle motor and/or rear spindle motor
Energy.
Further, the parallel coupled is coaxial parallel-connection coupling or twin shaft parallel coupled.
Further, the preceding spindle motor uses AC induction motor or magneto.
Further, the gearbox is manual-automatic integral gearbox AMT, automatic gear-box AT, electrodeless variable-speed gearbox CVT
Or double clutch gearbox DCT.
The different working modes for the oily electrohydraulic mixed power system that the present invention is also independently driven using above-mentioned antero posterior axis turn
Method is changed, is specifically included：
1) vehicle start or acceleration driving；
1.1. judge whether pressure is less than setting value in low pressure accumulator, if being less than setting value, hydraulic pump/motor can not
Participate in driving process；Battery soc values are judged again, if battery soc values can not also participate in again smaller than setting minimum value, preceding spindle motor
Driving process, now only started or accelerating vehicle by engine；
1.2. when hydraulic pump/motor can not participate in driving and battery soc values are higher than setting minimum value, then front axle electricity is judged
The no driving force provided needed for vehicle of function, if driving force needed for vehicle can be provided by preceding spindle motor completely, by preceding spindle motor
Driving；If driving force needed for vehicle can not be provided by preceding spindle motor completely, driven jointly with engine by preceding spindle motor；
If 1.3. hydraulic pump/motor can participate in driving, i.e., low pressure accumulator pressure then needs to judge higher than setting minimum value
Whether the driving force that hydraulic pump/motor is provided provides the driving force that vehicle accelerates or starting is required enough, vehicles if enough
Only driven by hydraulic pump/motor；Need to judge that can front axle participate in driving if deficiency, i.e., whether battery soc values are higher than setting most
Small value, preceding spindle motor can not provide driving force, then vehicle is driven jointly by hydraulic pump/motor and engine；If preceding spindle motor can
To provide driving force, then can spindle motor supply the inadequate part driving force of hydraulic pump/motor before judging, if preceding spindle motor drives
Power is enough, then is driven jointly with hydraulic pump/motor by preceding spindle motor, if front axle motor driving force is inadequate, need to by hydraulic pump/
Motor, preceding spindle motor and engine drive jointly；
2) vehicle deceleration or braking driving；
2.1. judge that can hydraulic pump/motor absorb braking energy according to high pressure accumulator pressure, if high pressure accumulator pressure
Power reaches setting maximum, then hydraulic pump/motor does not reabsorb energy；If hydraulic pump/motor can continue to absorb braking energy,
Then need to judge whether the brake force that hydraulic pump/motor is provided meets required brake force, can be by hydraulic pump/motor if meeting
Independent brake；
If the brake force that 2.2. hydraulic pump/motor is provided can not meet required brake force, battery soc should be first judged
Whether value is more than set definite value, if battery soc values are more than setting value, preceding spindle motor can not provide any brake force, now by
Hydraulic pump/motor and friction braking system provide required brake force jointly；If battery soc values are below setting value, i.e. battery
In chargeable scope, then it should judge whether front axle motor braking power can supply the inadequate brake force of hydraulic pump/motor, if preceding
Spindle motor brake force is enough, then vehicle is braked jointly by hydraulic pump/motor regenerative braking and preceding spindle motor regenerative braking, if front axle
Motor and/or rear axle motor braking power deficiency, then vehicle braking procedure is by hydraulic pump/motor regenerative braking, the regeneration of preceding spindle motor
Braking and friction catch are completed jointly；
2.3. if high pressure accumulator pressure can not absorb braking energy higher than the maximum set, hydraulic pump/motor；This
Can Shi Shouxian absorb braking energy according to whether battery soc values are more than spindle motor before setting value judges, if can not, vehicle system
Dynamic process is all completed by friction catch；If preceding spindle motor can absorb braking energy, judge that can front axle motor braking power
Whole brake force is provided, if can if brake and can be completed by front axle motor braking, braking procedure is by preceding spindle motor if not all right
Braking and friction catch are completed jointly.
Compared with prior art, its remarkable advantage is the present invention：On the basis of traditional front driving type oil electric mixed dynamic,
Increase electro-hydraulic mixing or single hydraulic pressure power-driven system in rear axle, enhance the passing through property of vehicle；Power of motor is divided
To front and rear motor so that power of motor can match relatively small；And increased hydraulic accumulation energy system can increase vehicle
Energy recovery rate and provide driving during needed for it is high-power, can reduce the loss of electric machine, weaken high current charge-discharge for
The influence of service lifetime of accumulator.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can by following specification realizing and
Obtain.
Brief description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing excellent
The detailed description of choosing, wherein：
Fig. 1 is the structural representation of present system；
Fig. 2 is driving, acceleration or the starting mode control logic figure of present system；
Fig. 3 is braking/slow down mode control logic figure of present system；
Fig. 4 is another prolongation structure schematic diagram of present system；
Reference：Engine 1, preceding spindle motor 2, gearbox 3, preceding shaft clutch 4, battery 5, rear shaft clutch 6, hydraulic pressure
Pump/motor 7, high pressure accumulator 8, low pressure accumulator 9, control valve group 10, rear spindle motor 11.
Embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail；It should be appreciated that preferred embodiment
Only for the explanation present invention, the protection domain being not intended to be limiting of the invention.
Embodiment one：
Embodiment is substantially as shown in Figure 1：The oily electro-hydraulic mixing that a kind of antero posterior axis that the present embodiment provides independently drives is dynamic
Force system, including gearbox 3, battery 5, the front axle oil electric mixed dynamic being independently connected by gearbox 3 with automobile front-axle and with
The rear axle electrohydraulic mixed power of vehicle rear axle independent connection, the front axle oil electric mixed dynamic include engine 1 and preceding spindle motor 2,
For providing driving force to front axle and the braking energy of automobile front-axle being reclaimed by preceding spindle motor 2；The rear axle electrohydraulic mixed power bag
Hydraulic pressure unit and rear spindle motor 11 are included, for providing driving force to rear axle and the Brake Energy of vehicle rear axle being absorbed by hydraulic pressure unit
Amount；Wherein, by the preceding parallel coupled of shaft clutch 4 between engine 1 and preceding spindle motor 2, then with gearbox 3 front axle differential is passed through
(not shown) is connected on front axle；By the rear parallel coupled of shaft clutch 6 between hydraulic pressure unit and rear spindle motor 11, then pass through rear axle
Main reducing gear/differential assembly is connected on rear axle；Hydraulic pressure unit is by hydraulic pump/motor 7, high pressure accumulator 8, low pressure accumulator
9th, control valve group 10 forms；Battery 5 is connected respectively with preceding spindle motor 2 and rear spindle motor 11；Parallel coupled uses coaxial parallel-connection coupling
Close or twin shaft parallel coupled, preceding spindle motor 2, rear spindle motor 11 use AC induction motor or magneto, gearbox 5 is hand
Automatic integral gearbox AMT, automatic gear-box AT, electrodeless variable-speed gearbox CVT or double clutch gearboxes DCT；Hydraulic pump/motor
7, which be both operable with pump condition, is used to reclaim braking energy, it can also be used to which motor operating conditions are used to drive vehicle rear axle.
Using such scheme, the element being connected with system front axle includes engine 1, preceding spindle motor 2, gearbox 3, clutch
4, when current axis only needs the engine 1 to export, preceding shaft clutch 4 engages, now preceding spindle motor 2 not power output, only by engine 1
Power output；Before current axis only needs during 2 power output of spindle motor, preceding shaft clutch 4 is not engaged, and engine 1 is shut down, only by front axle
Motor 2 exports；When current axis needs engine 1 and the preceding spindle motor 2 to drive jointly, preceding shaft clutch 4 engages, engine 1 it is defeated
Go out the rotor of spindle motor 2 before power is superimposed to, both drive front axle jointly.When vehicle is braked, front axle is absorbed by preceding spindle motor 2
Partial brake energy.There is a rear spindle motor 11 with the element of axis connection after system, rear shaft clutch 6, and by hydraulic pump/motor
7th, the hydraulic pressure unit that high pressure accumulator 8, low pressure accumulator 9, control valve block 10 form, hydraulic pump/motor 7 are logical with rear spindle motor 11
Later shaft clutch 6 connects, and both form coaxial parallel-connection structure, when rear axle only needs rear spindle motor 11 to drive, rear shaft clutch 6
Do not engage, only rear axle is by the rear power output of spindle motor 11；When rear axle only needs hydraulic pressure unit to drive, rear shaft clutch 6 engages, after
The not power output of spindle motor 11, the power that hydraulic pump/motor 7 exports is via rear shaft clutch 6, the rotor transmission of rear spindle motor 11
To rear axle；When spindle motor and hydraulic pressure unit drive jointly after rear axle needs, rear shaft clutch 6 engages, hydraulic pump/motor 7
Power is superimposed with the power of rear spindle motor 11, drives rear axle jointly；, can be by rear spindle motor 11 and/or hydraulic pressure when vehicle is braked
Pump/motor 7 absorbs the partial brake energy of rear axle.The advantages of the system, has：Hydraulic pressure unit introduces what can be braked in vehicle
During increase vehicle energy recovery rate, reduce motor current loss and weaken driving/energy recovery process in electric discharge/
Impact of the charging current to battery, during driving, vehicles dynamic performance can be strengthened；And antero posterior axis independently drives and also strengthened
The passing through property of vehicle.
First, the drive pattern of the system has following several：
1st, simple engine drive mode.Now after shaft clutch 6 separate, preceding shaft clutch 4 engages, preceding spindle motor 2 and
Spindle motor 11 does not work afterwards, and the power that engine 1 exports is defeated via preceding shaft clutch 4, the rotor of preceding spindle motor 2, speed changer 3
Go out to front axle.Now vehicle is forerunner's pattern.
2nd, the electric combination drive pattern of oil.Shaft clutch 6 separates after now, and preceding shaft clutch 4 engages, and engine 1 works, preceding
Spindle motor 2 and/or rear spindle motor 11 work.The power that engine 1 exports is via preceding shaft clutch 4, the output with preceding spindle motor 2
Power is superimposed (if preceding spindle motor 2 works), or before being directly over spindle motor 2 rotor (if preceding spindle motor 2 does not work), by by
Gearbox 3 is exported to front axle；The power output of spindle motor 11 (if rear spindle motor 11 works) is directly output to rear axle afterwards.Now vehicle
In forerunner's pattern (if rear spindle motor 11 does not work) or 4 wheel driven pattern (if rear spindle motor 11 works).
3rd, hydraulic pressure assisted engine drive pattern.Shaft clutch 6 engages after now, and preceding shaft clutch 4 engages, rear spindle motor
11 and preceding spindle motor 2 do not work.The power that engine 1 exports is via preceding shaft clutch 4, the rotor of preceding spindle motor 2, gearbox
3 export to front axle；High-voltage oil liquid in high pressure accumulator 8 drives hydraulic pump/motor 7 by control valve group 10.Hydraulic pump/motor
7 power outputs are exported to rear axle via rear shaft clutch 6, the rotor of rear spindle motor 11.Now vehicle is 4 wheel driven pattern.
4th, pure electric drive mode.Shaft clutch 6 is separated after now, and preceding shaft clutch 4 is separated, and engine 1 is shut down.Rear axle electricity
Machine 11 and preceding spindle motor 2 are worked, and rear spindle motor 11 is exported to rear axle, and the preceding power of spindle motor 2 is exported to front axle by gearbox 3,
Now vehicle is 4 wheel driven pattern.Or depending on vehicle power demand situation, spindle motor 2 or rear spindle motor 11 are defeated before can be used alone
Go out power, then vehicle is in single forerunner or rear-guard pattern
5th, hydraulic pressure stand-by motor drive pattern.Shaft clutch 6 engages after now, and preceding shaft clutch 4 separates, and engine 1 stops
Machine, rear spindle motor 11 and/or preceding spindle motor 2 work.High-voltage oil liquid in high pressure accumulator 8 drives hydraulic pressure by control valve group 10
Pump/motor 7.The power output of hydraulic pump/motor 7 via rear shaft clutch 6, be superimposed with the power output of rear spindle motor 11 (when after
When spindle motor 11 starts) or directly exported via the rotor of rear spindle motor 11 (when rear spindle motor 11 does not work) to rear axle, it is preceding
Axle is driven by preceding spindle motor 2.Now vehicle is rear-guard or 4 wheel driven pattern.
6th, pattern is operated alone in hydraulic pressure.Shaft clutch 6 is engaged after now, and preceding shaft clutch 4 is separated, and engine 1 is shut down, after
Spindle motor 11 does not work, and preceding spindle motor 2 does not work.High-voltage oil liquid in high pressure accumulator 8 drives hydraulic pressure by control valve group 10
Pump/motor 7.The power output of hydraulic pump/motor 7 is exported to rear axle, driving via rear shaft clutch 6, the rotor of rear spindle motor 11
Vehicle.Because hydraulic accumulation energy energy density is small, therefore suitable for starting operating mode.Now vehicle is rear-guard pattern.
7th, full combination drive.Shaft clutch 6 engages after now, and preceding shaft clutch 4 engages, and engine 1 works, rear spindle motor
11 and the 2 at least one work of preceding spindle motor.The power that engine 1 exports is via preceding shaft clutch 4, the output with preceding spindle motor 2
Power is superimposed (if preceding spindle motor 2 works), or before being directly over spindle motor 2 rotor (if preceding spindle motor 2 does not work), by by
Gearbox 3 is exported to front axle；High-voltage oil liquid in high pressure accumulator 8 drives hydraulic pump/motor 7 by control valve group 10.Hydraulic pressure
The power output of pump/motor 7 is superimposed (if rear spindle motor 11 works) with the power output of rear spindle motor 11 via rear shaft clutch 6,
Or directly via the rotor (if rear spindle motor 11 does not work) of rear spindle motor 11, rear output to rear axle.Now vehicle is 4 wheel driven mould
Formula.
Vehicle different driving patten transformation principle in starting to walk or driving accelerator is shown in accompanying drawing 3.When needs accelerate or rise
During step：
1.1. judge whether pressure is less than setting value in low pressure accumulator 9, if being less than setting value, the nothing of hydraulic pump/motor 7
Method participates in driving process；The soc values of battery 5 are judged again, if the soc values of battery 5 are again smaller than setting minimum value, preceding spindle motor 2
And/or rear spindle motor 11 can not also participate in driving process, now only started or accelerating vehicle by engine 1；
1.2. when hydraulic pump/motor 7 can not participate in the soc values of driving and battery 5 higher than setting minimum value, then before judging
Can spindle motor 2 and/or rear spindle motor 11 provide the driving force needed for vehicle, if driving force needed for vehicle can be completely by front axle electricity
Machine 2 and/or rear spindle motor 11 provide, then are driven by preceding spindle motor 2 and/or rear spindle motor 11；If driving force can not needed for vehicle
There is provided completely by preceding spindle motor 2 and/or rear spindle motor 11, then it is common by preceding spindle motor 2 and/or rear spindle motor 11 and engine 1
Driving；
If 1.3. hydraulic pump/motor 7 can participate in driving, i.e., the pressure of low pressure accumulator 9 then needs to sentence higher than setting minimum value
Whether the driving force that disconnected hydraulic pump/motor 7 is provided provides the driving force that vehicle accelerates or starting is required enough, cars if enough
Only driven by hydraulic pump/motor 7；Spindle motor 2 and/or rear spindle motor 11 before judging is needed to participate in driving if deficiency, i.e.,
Whether the soc values of battery 5 are higher than minimum value is set, and preceding spindle motor 2 and/or rear spindle motor 11 can not provide driving force, then vehicle
Driven jointly by hydraulic pump/motor 7 and engine 1；If preceding spindle motor 2 and/or rear spindle motor 11 can provide driving force, sentence
Can spindle motor 2 and/or rear spindle motor 11 supply the inadequate part driving force of hydraulic pressure unit before disconnected, if preceding spindle motor 2 and/or
The driving force of spindle motor 11 is enough afterwards, then is driven jointly with hydraulic pump/motor 7 by preceding spindle motor 2 and/or rear spindle motor 11, if preceding
Spindle motor 2 and/or the rear driving force of spindle motor 11 are inadequate, then need to be by hydraulic pump/motor 7, preceding spindle motor 2 and/or rear spindle motor 11
And engine 1 drives jointly.
2nd, the mode of operation during recovery braking energy of the system has：
1st, hydraulic pressure recovery braking energy.Shaft clutch 6 engages after now, and rear spindle motor 11 does not produce braking moment, also not
Produce feedback current.Hydraulic pump/motor 7 is worked under pump pattern, using the torque that rear axle passes over by low pressure accumulator 9
Low pressure fluid be pumped into high pressure accumulator 8 via control valve group 10, produce moment of resistance abrupt deceleration vehicle, and by the braking energy of recovery
It is stored in the form of hydraulic energy in high pressure accumulator 8.
2nd, motor recovery braking energy.Shaft clutch 6 does not engage after now, and preceding shaft clutch 4 does not engage, rear spindle motor 11
And/or preceding spindle motor 2 is in regenerative braking pattern, rear spindle motor 11 and/or preceding spindle motor 2 produce electromagnetic braking torque braking car
, and feedback current is produced, braking energy is stored in battery 5 in a manner of electric energy.
3rd, the compound recovery braking energy of electric-liquid.Shaft clutch 6 engages after now, and preceding shaft clutch 4 does not engage, rear axle electricity
Machine 11 and at least one generation electromagnetic braking torque of preceding spindle motor 2, braking moment caused by hydraulic pump/motor 7 and rear spindle motor
Braking moment caused by 11 is superimposed, and regenerative braking force is provided to rear axle；Braking moment caused by preceding spindle motor 2 provides again for front-wheel
Raw brake force.Now partial regeneration braking energy is converted into hydraulic energy and is stored in high pressure accumulator 8, partial regeneration braking energy
It is converted into electric energy and is stored in battery 5, thus the energy recovery rate of regenerative braking can be improved.
In addition to regenerative braking, to ensure brake safe and brake efficiency, system should have conventional friction braking in itself
System.Therefore system, because different brake force is engaged, makes system have multiple different braking mould in braking procedure
Formula.
Vehicle different driving patten transformation principle in deceleration or braking procedure is shown in accompanying drawing 4.When needing to slow down or braking：
2.1. judge that can hydraulic pump/motor 7 absorb braking energy according to the pressure of high pressure accumulator 8, if high pressure accumulator 8
Pressure reaches setting maximum, then hydraulic pump/motor 7 does not reabsorb energy；If hydraulic pump/motor 7 can continue to absorb braking
Energy, then need to judge whether the brake force that hydraulic pump/motor 7 is provided meets required brake force, can be by hydraulic pressure if meeting
The independent brake of pump/motor 7；
If the brake force that 2.2. hydraulic pump/motor 7 is provided can not meet required brake force, battery 5 should be first judged
Soc values whether be more than set definite value, if the soc values of battery 5 are more than setting value, preceding spindle motor 2 and/rear spindle motor 11 can not
Any brake force is provided, now provides required brake force jointly by hydraulic pump/motor 7 and friction braking system；If battery 5
Soc values are below setting value, i.e., battery 5 is in chargeable scope, then spindle motor 2 and/or rear spindle motor 11 are braked before should judging
Whether power can supply the inadequate brake force of hydraulic pump/motor 7, if preceding spindle motor 2 and/or the rear brake force of spindle motor 11 are enough,
Then vehicle is braked jointly by the regenerative braking of hydraulic pump/motor 7 and preceding spindle motor 2 and/or the rear regenerative braking of spindle motor 11, if front axle
Motor 2 and/or the rear brake force of spindle motor 11 deficiency, then vehicle braking procedure is by the regenerative braking of hydraulic pump/motor 7, preceding spindle motor 2
And/or the rear regenerative braking of spindle motor 11 and friction catch are completed jointly；
2.3. if the pressure of high pressure accumulator 8 can not absorb braking energy higher than the maximum set, hydraulic pump/motor 7；
Now system can be absorbed according to whether the soc values of battery 5 are more than spindle motor 2 and/or rear spindle motor 11 before setting value judges first
Energy, if can not, vehicle braking procedure is all completed by friction catch；If preceding spindle motor 2 and/or rear spindle motor 11 can be with
Braking energy is absorbed, then can spindle motor 2 and/or the rear brake force of spindle motor 11 provide whole brake force before judging, if can be with
Then braking can brake completion by preceding spindle motor 2 and/or rear spindle motor 11, if not all right braking procedure by preceding spindle motor 2 and/or after
Spindle motor 11 is braked and friction catch is completed jointly.
The system is also equipped with the charge mode of engine 1：Preceding shaft clutch 4 engages, and engine 1 works, and preceding spindle motor 2 works
In generator mode, produce electric current and charged to battery 5.
By the analysis of above mode of operation as can be seen that the oily electrohydraulic mixed power system energy that the antero posterior axis independently drives
Enough realize is provided (or absorption) by different-energy source and is distributed to the driving of different driving axle (or braking) energy.By appropriate
Control method control vehicle switches under different driving (braking) pattern, and vehicle can adapt to many different driving cycles；Together
When, using the advantage process auxiliary drive (braking) of hydraulic accumulation energy, it also can to a certain extent mitigate or even eliminate electric motor starting and feedback
Charging current impact is put during braking, and energy recovery rate is improved in braking procedure.
Embodiment two：
In addition, oily electrohydraulic mixed power system involved in the present invention also includes another Extended forms such as accompanying drawing 2, i.e., before
Axle is the electric coaxial parallel-connection hybrid power system of oil, and rear axle is pure hydraulic-driven, that is, has lacked rear spindle motor 11.Its drive pattern and system
The judgment principle of dynamic model formula is identical with the antero posterior axis independent driving system of the preceding shafting oil electricity mixing electro-hydraulic mixing of rear axle, is not just repeating
.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Right among.
Claims (10)
1. the oily electrohydraulic mixed power system that a kind of antero posterior axis independently drives, including gearbox (3) and battery (5), its feature exist
In, in addition to the front axle oil electric mixed dynamic that is independently connected with automobile front-axle by gearbox and with vehicle rear axle independent connection
Rear axle electrohydraulic mixed power, the front axle oil electric mixed dynamic includes engine (1) and preceding spindle motor (2), for being carried to front axle
For driving force and by the braking energy of preceding spindle motor recovery vehicle front axle；The rear axle electrohydraulic mixed power include hydraulic pressure unit and
Spindle motor (11) afterwards, for providing driving force to rear axle and the braking energy of vehicle rear axle being absorbed by hydraulic pressure unit；Wherein, it is described
Pass through preceding shaft clutch (4) parallel coupled between engine and preceding spindle motor；Pass through rear axle between the hydraulic pressure unit and rear spindle motor
Clutch (6) parallel coupled；The hydraulic pressure unit is by hydraulic pump/motor (7), high pressure accumulator (8), low pressure accumulator (9), control
Valve group (10) composition processed；The battery is connected respectively with preceding spindle motor and rear spindle motor.
2. the oily electrohydraulic mixed power system that antero posterior axis according to claim 1 independently drives, it is characterised in that it is described simultaneously
Connection coupling is using coaxial parallel-connection coupling or twin shaft parallel coupled.
3. the oily electrohydraulic mixed power system that antero posterior axis according to claim 1 independently drives, it is characterised in that before described
Spindle motor, rear spindle motor use AC induction motor or magneto.
4. the oily electrohydraulic mixed power system that antero posterior axis according to claim 1 independently drives, it is characterised in that the change
Fast case is manual-automatic integral gearbox AMT, automatic gear-box AT, electrodeless variable-speed gearbox CVT or double clutch gearboxes DCT.
5. the oily electrohydraulic mixed power system that a kind of antero posterior axis independently drives, it is characterised in that including gearbox (3) and battery
(5), it is characterised in that also include the front axle oil electric mixed dynamic that is independently connected with automobile front-axle by gearbox and with after vehicle
The independent hydraulic power of rear axle of axle independent connection, the front axle oil electric mixed dynamic include engine (1) and preceding spindle motor (2),
For providing driving force and by the braking energy of preceding spindle motor recovery vehicle front axle to front axle；The independent hydraulic power bag of rear axle
Hydraulic pressure unit is included, for providing driving force to rear axle and the braking energy of vehicle rear axle being absorbed by hydraulic pressure unit；Wherein, the hair
Pass through preceding shaft clutch (4) parallel coupled between motivation and preceding spindle motor；Between the hydraulic pressure unit and vehicle rear axle by rear axle from
Clutch (6) connects；The hydraulic pressure unit is by hydraulic pump/motor (7), high pressure accumulator (8), low pressure accumulator (9), control valve group
(10) form；The battery and front axle motor connection.
6. the oily electrohydraulic mixed power system that antero posterior axis according to claim 5 independently drives, it is characterised in that it is described simultaneously
Connection is coupled as coaxial parallel-connection coupling or twin shaft parallel coupled.
7. the oily electrohydraulic mixed power system that antero posterior axis according to claim 5 independently drives, it is characterised in that before described
Spindle motor uses AC induction motor or magneto.
8. the oily electrohydraulic mixed power system that antero posterior axis according to claim 5 independently drives, it is characterised in that the change
Fast case is manual-automatic integral gearbox AMT, automatic gear-box AT, electrodeless variable-speed gearbox CVT or double clutch gearboxes DCT.
9. the different operating of the oily electrohydraulic mixed power system independently driven using the antero posterior axis described in claim any one of 1-4
Mode conversion method, it is characterised in that including：
1) vehicle start or acceleration driving；
1.1. judge whether pressure is less than setting value in low pressure accumulator, if being less than setting value, hydraulic pump/motor can not participate in
Driving process；Battery soc values are judged again, if battery soc values are again smaller than setting minimum value, preceding spindle motor and/or rear spindle motor
Also driving process can not be participated in, is now only started or accelerating vehicle by engine；
1.2. when hydraulic pump/motor can not participate in driving and battery soc values are higher than setting minimum value, then spindle motor before judging
And/or can rear spindle motor provide the driving force needed for vehicle, if driving force needed for vehicle can completely by preceding spindle motor and/or after
Spindle motor provides, then is driven by preceding spindle motor and/or rear spindle motor；If driving force needed for vehicle can not be completely by preceding spindle motor
And/or rear spindle motor provides, then is driven jointly with engine by preceding spindle motor and/or rear spindle motor；
If 1.3. hydraulic pump/motor can participate in driving, i.e., low pressure accumulator pressure then needs to judge hydraulic pressure higher than setting minimum value
The driving force that pump/motor is provided whether enough provide vehicle accelerate or starting needed for driving force, if enough if vehicle only by
Hydraulic pump/motor drives；Need to judge that can preceding spindle motor and/or rear spindle motor participate in driving if deficiency, i.e., battery soc values are
No to provide driving force higher than setting minimum value, preceding spindle motor and/or rear spindle motor, then vehicle is by hydraulic pump/motor and hair
Motivation drives jointly；If preceding spindle motor and/or rear spindle motor can provide driving force, spindle motor and/or rear axle electricity before judging
Function is no to supply the inadequate part driving force of hydraulic system, if preceding spindle motor and/or rear axle motor driving force are enough, by preceding
Spindle motor and/or rear spindle motor drive jointly with hydraulic pump/motor, if preceding spindle motor and/or rear axle motor driving force are inadequate,
It need to be driven jointly by hydraulic pump/motor, preceding spindle motor and/or rear spindle motor and engine；
2) vehicle deceleration or braking driving；
2.1. judge that can hydraulic pressure unit absorb braking energy according to high pressure accumulator pressure, set if high pressure accumulator pressure reaches
Determine maximum, then hydraulic pump/motor does not reabsorb energy；If hydraulic pump/motor can continue to absorb braking energy, need to judge
Whether the brake force that hydraulic pump/motor is provided meets required brake force, can individually be made by hydraulic pump/motor if meeting
It is dynamic；
If the brake force that 2.2. hydraulic pump/motor is provided can not meet required brake force, it should first judge that battery soc values are
No to be more than set definite value, if battery soc values are more than setting value, preceding spindle motor and/rear spindle motor can not provide any brake force,
Brake force needed for now being provided jointly by hydraulic pump/motor and friction braking system；If battery soc values below setting value,
I.e. battery is in chargeable scope, then whether spindle motor and/or rear axle motor braking power can supply hydraulic pump/horse before should judging
Up to inadequate brake force, if preceding spindle motor and/or rear axle motor braking power are enough, vehicle is by hydraulic pump/motor regenerative braking
Braked jointly with preceding spindle motor and/or rear spindle motor regenerative braking, if preceding spindle motor and/or rear axle motor braking power deficiency,
Vehicle braking procedure is total to by hydraulic pump/motor regenerative braking, preceding spindle motor and/or rear spindle motor regenerative braking and friction catch
With completion；
2.3. if high pressure accumulator pressure can not absorb braking energy higher than the maximum set, hydraulic pump/motor；It is now first
First judge that can preceding spindle motor and/or rear spindle motor absorb braking energy according to whether battery soc values are more than setting value, if not
Can, then vehicle braking procedure is all completed by friction catch；If preceding spindle motor and/or rear spindle motor can absorb braking energy,
Can spindle motor and/or rear axle motor braking power provide whole brake force before then judging, if can if brake can be by front axle electricity
Machine and/or rear axle motor braking are completed, and braking procedure is by preceding spindle motor and/or rear axle motor braking and friction catch if not all right
It is common to complete.
10. the different works of the oily electrohydraulic mixed power system independently driven using the antero posterior axis described in claim any one of 5-8
Operation mode conversion method, it is characterised in that including：
1) vehicle start or acceleration driving；
1.1. judge whether pressure is less than setting value in low pressure accumulator, if being less than setting value, hydraulic pump/motor can not participate in
Driving process；Battery soc values are judged again, if battery soc values can not also participate in driving again smaller than setting minimum value, preceding spindle motor
Process, now only started or accelerating vehicle by engine；
1.2. when hydraulic pump/motor can not participate in driving and battery soc values are higher than setting minimum value, then spindle motor energy before judging
Driving force needed for no offer vehicle, if driving force needed for vehicle can be provided by preceding spindle motor completely, driven by preceding spindle motor；
If driving force needed for vehicle can not be provided by preceding spindle motor completely, driven jointly with engine by preceding spindle motor；
If 1.3. hydraulic pump/motor can participate in driving, i.e., low pressure accumulator pressure then needs to judge hydraulic pressure higher than setting minimum value
The driving force that pump/motor is provided whether enough provide vehicle accelerate or starting needed for driving force, if enough if vehicle only by
Hydraulic pump/motor drives；Need to judge that can front axle participate in driving if deficiency, i.e., whether battery soc values are higher than setting minimum value,
Preceding spindle motor can not provide driving force, then vehicle is driven jointly by hydraulic pump/motor and engine；If preceding spindle motor can provide
Driving force, then can spindle motor supply the inadequate part driving force of hydraulic pump/motor before judging, if front axle motor driving force is sufficient
It is enough, then driven jointly with hydraulic pump/motor by preceding spindle motor, if front axle motor driving force is inadequate, need to by hydraulic pump/motor,
Preceding spindle motor and engine drive jointly；
2) vehicle deceleration or braking driving；
2.1. judge that can hydraulic pump/motor absorb braking energy according to high pressure accumulator pressure, if high pressure accumulator pressure reaches
To maximum is set, then hydraulic pump/motor does not reabsorb energy；If hydraulic pump/motor can continue to absorb braking energy, need
Judge whether the brake force that hydraulic pump/motor is provided meets required brake force, can be independent by hydraulic pump/motor if meeting
Braking；
If the brake force that 2.2. hydraulic pump/motor is provided can not meet required brake force, it should first judge that battery soc values are
No to be more than set definite value, if battery soc values are more than setting value, preceding spindle motor can not provide any brake force, now by hydraulic pressure
Pump/motor and friction braking system provide required brake force jointly；If battery soc values are below setting value, i.e., battery is in
Chargeable scope, then should judge whether front axle motor braking power can supply the inadequate brake force of hydraulic pump/motor, if front axle is electric
Brake force is enough, then vehicle is braked jointly by hydraulic pump/motor regenerative braking and preceding spindle motor regenerative braking, if preceding spindle motor
And/or rear axle motor braking power deficiency, then vehicle braking procedure is by hydraulic pump/motor regenerative braking, preceding spindle motor regenerative braking
And friction catch is completed jointly；
2.3. if high pressure accumulator pressure can not absorb braking energy higher than the maximum set, hydraulic pump/motor；It is now first
Braking energy first can be absorbed according to whether battery soc values are more than spindle motor before setting value judges, if can not, vehicle was braked
Journey is all completed by friction catch；If preceding spindle motor can absorb braking energy, judge that can front axle motor braking power provide
Whole brake force, if can if brake and can be completed by front axle motor braking, braking procedure is by front axle motor braking if not all right
Completed jointly with friction catch.
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