CN109072797A - Method for determining the energy state of electrical energy supply system - Google Patents
Method for determining the energy state of electrical energy supply system Download PDFInfo
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- CN109072797A CN109072797A CN201780024159.9A CN201780024159A CN109072797A CN 109072797 A CN109072797 A CN 109072797A CN 201780024159 A CN201780024159 A CN 201780024159A CN 109072797 A CN109072797 A CN 109072797A
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
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- 230000000694 effects Effects 0.000 claims description 31
- 230000005611 electricity Effects 0.000 description 19
- 239000000446 fuel Substances 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000008450 motivation Effects 0.000 description 4
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- 238000010276 construction Methods 0.000 description 3
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Classifications
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- 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
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
- F02D41/083—Introducing corrections for particular operating conditions for idling taking into account engine load variation, e.g. air-conditionning
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1446—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in response to parameters of a vehicle
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
- B60W2030/1809—Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/085—Power
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/30—Auxiliary equipments
- B60W2510/305—Power absorbed by auxiliaries
-
- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
- B60W2710/065—Idle condition
-
- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
- B60W2710/0655—Coasting condition
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Method for determining the energy state of electrical energy supply system, the electrical energy supply system is connected to internal combustion engine (4), current consuming apparatus (3) and including motor (2) and electric energy accumulator (1), wherein determine the current charge level of reservoir (1), it is characterized in that, this method is further comprising the steps of :-determine the current electrical energy production ability of motor (2), determining that electrical energy supply system is in the referred to as current energy state of nominal current energy state and whether the current electrical energy production ability of motor (2) is lower than if the current charge level of reservoir (1) is higher than the fixed charge level of reservoir (1) with enough deposits is judged for it only can ensure that the fixed threshold value of supply electric energy for its motor (2).
Description
Technical field
The present invention relates to the revolving speed management and electrical energy production management of automotive field more particularly to vehicle internal combustion engine.
The engine speed of vehicle influences its discharge and its fuel consumption, but also influences its operating for producing various current consuming apparatus
The ability of necessary electric energy.
Background technique
It intelligently reduces and the engine speed of operating and controlling vehicle makes it possible to reduce its disposal of pollutants and its fuel disappears
Consumption, this represent the significant challenges in automobile industry.
However, reducing engine speed to reduce discharge and fuel consumption also and to there is the reduction producible maximum power of vehicle
Amount consequence, there may be problems in the case that this current consuming apparatus in the activity on vehicle has a high requirements.
Be realised that from document EP2138711 it is a kind of for automatically stopping and restarting the system of vehicle internal combustion engine, will be electric
The charged state in pond is accounted for determine stopping or restart the internal combustion engine of vehicle.However, only considering the charged state of battery not
It is enough the state of the electric energy for the needs for knowing whether vehicle is in the current consuming apparatus that supply is sufficient in various activities.
Summary of the invention
Therefore, the purpose of the present invention is to all predict whether vehicle is in supply all the time to be sufficient in various activities
The state of the electric energy of the needs of current consuming apparatus, especially in the case where the engine speed of vehicle contingency will be lowered.
In order to realize the purpose, it provides according to the present invention a kind of for determining the electric energy for being connected to internal combustion engine and current consuming apparatus
The method of the energy state of supply system, the system include:
Motor, can extract the mechanical energy of internal combustion engine to produce electric energy,
Electric energy accumulator,
This method includes the steps that the current charge level and following steps of determining reservoir:
Determine that the current electrical energy production ability of motor, the ability indicate the electrical energy production of motor relative to its maximum capacity
Present score,
If the current charge level of reservoir is higher than fixed charge level, it is determined that electrical energy supply system is in
The current energy state of referred to as nominal current energy state, the nominal energy state guarantee the consumption with nominal manner into activity
Electric equipment supplies electric energy, and the fixed charge level is to judge that reservoir has the load for being enough to alleviate current consuming apparatus for it
Whether the current electrical energy production ability of deposit and determining motor that lotus increases, which is lower than, only can ensure that for its motor with nominal side
The fixed threshold value of current consuming apparatus supply electric energy of the formula into activity.
Various supplementary features can be provided alone or in combination:
In a variant, this method is further comprising the steps of:
Determine target engine speed,
Determine the maximum power that motor can produce under target engine speed,
If electric energy consumed by the current consuming apparatus in activity is lower than fixed maximum power, decision-making system is in
The referred to as prediction operating condition of nominal prediction operating condition, the nominal prediction operating condition are directed to the target engine speed
Guarantee that the current consuming apparatus with nominal manner into activity supplies electric energy,
If system is not on nominal current operation state and/or is not on nominal prediction operating condition, determine
System is in the electric power scarcity state for being known as critical electric power scarcity state.
The invention further relates to a kind of methods for controlling vehicle, and the vehicle includes the electricity for being connected to internal combustion engine and current consuming apparatus
Can supply system, the method includes preceding methods, if it is determined that and wherein to be not on referred to as critical electric power deficient for system
The electric power scarcity state of weary state then allows to manipulate internal combustion engine under fixed target engine speed.
In a variant, if continuous decision-making system is not on referred to as critical electricity during scheduled acknowledging time window
The electric power scarcity state of power scarcity state then allows to manipulate internal combustion engine under fixed target engine speed.
Advantageously, the duration of acknowledging time window is between 1 to 10 seconds.
Wherein vehicle can in the modification of freewheel motion of defect modes, the target engine speed be with freewheel
The associated tickover revolving speed of the movement of the vehicle of mode.
In another modification during wherein vehicle is in freewheel mode,
The current electrical energy production ability of motor is detected,
If having reached the maximum power production capacity of motor under tickover revolving speed, will with freewheel mode
The associated tickover revolving speed of movement of vehicle increase fixed value.
Advantageously, with the increment value of the associated tickover revolving speed of the movement of the vehicle of freewheel mode 100
To between 150 revs/min.
The invention further relates to a kind of electronic computers, which is characterized in that it includes acquisition device, by being stored in memory
In software instruction processing unit and control device needed for realizing method of the invention.
The invention further relates to a kind of vehicles comprising is connected to the electrical energy supply system of internal combustion engine and current consuming apparatus, this is
System includes:
Motor, can extract the mechanical energy of the engine to produce electric energy,
Electric energy accumulator,
The vehicle further includes the electronic computer according to previous claim.
Detailed description of the invention
By reading the description to specific embodiment hereafter, other feature and advantage be will be evident, the embodiment
It is not limitation of the present invention, the description is made with reference to attached drawing, in the accompanying drawings:
- Fig. 1 is equipped with schematically showing for the electrical construction of the vehicle of internal combustion engine, can realize for the electrical construction
The present invention.
- Fig. 2 is schematically showing for electric energy scarcity fallout predictor of the invention.
- Fig. 3 is that electric energy scarcity fallout predictor of the invention is adapted to the schematic table of the vehicle driving of freewheel mode
Show.
Specific embodiment
Fig. 1 shows the electrical construction of vehicle, including electric energy accumulator 1, such as such as battery, such as electrochemical cell；Electricity
Machine, such as alternating current generator 2；The In-vehicle networking 3 of vehicle, has accumulated the device of the vehicle as power consuming devices, these electricity
Can consume equipment can according to need and be individually activity in or it is inactive in.Electric energy accumulator 1 is electrically connected to motor and vehicle
Support grid network and have ground connection M.In-vehicle networking 3 is electrically connected to motor 2 and electrical ground M.
Motor 2 is mechanically connected to internal combustion engine 4, it is allowed to acquire the mechanical energy of internal combustion engine 4 to produce electric energy.By motor
2 and electric energy accumulator 1 form component formed vehicle In-vehicle networking 4 electrical energy supply system.Therefore, electrical energy supply system makes
Can be based on the electric energy being stored in advance in electric energy accumulator 1 or by will be produced by internal combustion engine 4 by means of motor 2
Mechanical energy is converted into electric energy to power electricity consuming apparatus.
The present invention can be three modules described in Fig. 2 with main decomposition:
First module 20 has the function of calculating current energy state, that is to say, that in the energy at this moment of vehicle operation
State.
When meeting the two following conditions, electrical energy supply system considered to be in " nominal " state:
The electric energy being stored in reservoir 1 is higher than threshold value predetermined.For example, the predetermined threshold can be reservoir 1
Charge level be higher than 80%.
Electrical energy supply system can only guarantee the current consuming apparatus into various activities by converting mechanical energy into electric energy
Supply electric energy.
In the con-trary case, that is to say, that in a case where, electrical energy supply system considered to be in " degradation " state:
The electric energy stored cannot be only by converting mechanical energy into electricity lower than threshold value predetermined or the system
Can come guarantee the current consuming apparatus into various activities supply electric energy.
First module 20 uses following information as input:
Indicate the information 20a of the current charge level of vehicle electric energy accumulator 1.The information can be the charging of reservoir 1
State is generally designated as SOC (acronym of english expression " State Of Charge (charged state) ").
Indicate the current electrical energy production ability of motor 2 and its information 20b of saturation degree.The electricity of current ability expression motor 2
It can present score of the production relative to its maximum capacity.In the case where motor 2 is alternating current generator, which can be the friendship
Flow the open circuit duty ratio (RCO) of the exciting circuit of generator.The information permits a determination that the current production energy of alternating current generator
Power and its saturation degree (such as the 70% current electrical energy production ability of RCO instruction alternating current generator is the 70% of its maximum value, because
This still needs to deposit 30% and just reaches its 100% saturation).
First module 20 determines to indicate the information 20c of the current energy state of electrical energy supply system, and supplying should information
20c is as output, such as in the form of boolean, state is translated to " nominal " or " degradation ".In the electric energy storage for indicating vehicle
The information 20a of the current charge level of storage 1 is the charged state SOC of Vehicular battery and indicates that the current electric energy of motor 2 is raw
In the case that the information 20b of production capacity power and its saturation degree is open circuit duty ratio RCO, the module 20 therefore constantly verifying:
The present charge state of reservoir 1 is higher than the horizontal SOC_lim of charged state predetermined.The charged state threshold
Value SOC_lim --- being, for example, 80% --- is to judge that battery has for it to be enough to alleviate the unexpected of current consuming apparatus
Load increases the threshold value of the power reserve of (for example, opening new current consuming apparatus).
The motor 2 of vehicle can only guarantee to supply electric energy to various current consuming apparatus by converting mechanical energy into electric energy.
If current duty cycle RCO is lower than threshold value RCO_alt_lim, this point is verified, for threshold value RCO_alt_lim, 2 energy of motor
Enough ensure that current consuming apparatus only into activity supplies nominal electric energy, that is to say, that without recourse to the energy being stored in reservoir 1
In the case where amount.The threshold value can be 100% saturation threshold, or preferably consider safety margin, and therefore exist
In this case it can be 80%.
If meeting the two conditions, the electrical energy supply system of vehicle will considered to be in referred to as " nominal " energy
The current energy state (as defined above) of state, otherwise it is referred to as in current " degradation " state.
Second module 21, which has, is directed to target engine speed --- that is, disappear from reducing CO2 discharge and/or reducing fuel
Want to make the engine of vehicle to operate from the perspective of consumption with this revolving speed --- to calculate the energy state of electrical energy supply system
Function.The module is intended to predict whether electrical energy supply system still is able to only by will be mechanical under the target engine speed
The electric energy that can be converted into being supplied by motor is stored in electrical power storage without seeking help from come the power electricity consuming apparatus into activity
Energy in 1.
The purpose of second module 21 is to determine be transformed into it is characterized in that can be used for being converted into the mechanical energy of electric energy most
In the case where the stage that big potentiality reduce, whether the electrical energy supply system of vehicle can satisfy its various needs on electric energy.It should
The engine speed that stage shows as vehicle reduces, it means that the maximum machine that motor 2 (such as alternating current generator) can extract
Tool can reduce.
Second module 21 calculates the various power consumptions in the activity when calculating at the moment on vehicle at each moment
Current electric energy needed for equipment power supply.
Second module 21 is predicted also directed to the given target engine speed of the present engine revolving speed lower than vehicle
The maximum power that the electrical energy supply system of vehicle can provide.
A possibility that comparing electrical energy supply system of the two energy values to decide vehicle: in the engine speed of vehicle
Towards desired target engine speed it is low in the case where whether still be able to only by the way that electric energy can be converted into mechanical energy
To guarantee to supply electric energy to current consuming apparatus.
Second module 21 uses following information as input:
Indicate a desire to the information 21a that the target engine speed for the maximum power being able to produce is predicted for it.
Indicate the information of current electric energy needed for the power electricity consuming apparatus in the various activities on vehicle.It can be based on
Current strength information 21c that the output voltage information 21b and motor 2 of motor 2 are provided obtains the information.
Second module 21 determines to indicate to send out for the engine for wanting to make vehicle with this revolving speed come the Future targets operated
The information 21d of the energy state prediction of the electrical energy supply system of motivation revolving speed simultaneously provides this information as output.
When the maximum power that the electrical energy supply system of vehicle is capable of providing under desired target engine speed be higher than to
When electric energy needed for the various power electricity consuming apparatus when calculating at the moment in activity, prediction energy state is known as " nominal " prediction
Energy state.
When the maximum power that the electrical energy supply system of vehicle is capable of providing under desired engine speed is lower than to counting
When electric energy needed for various power electricity consuming apparatus when calculating at the moment in activity, prediction energy state referred to as " degradation " predicts energy
State.
Information 21c can be indicated for example with Boolean form, and state is translated to " nominal " or " degradation ".
Based on the output voltage information 21b of motor 2 and motor 2 offer current strength information 21c come obtain indicate to
In the case where the information of current electric energy needed for the power electricity consuming apparatus in various activities on vehicle, this second module is determined:
Current electric power consumed by current consuming apparatus in various activities, Pelec_conso:
Pelec_conso=| u_Prod*i_Prod | * facteur_correction_P_conso
Wherein:
U_Prod: the output voltage of motor 2,
I_Prod: the current strength that motor 2 provides,
Factor_correction_P_conso: in view of probabilistic Dynamic gene of u_Prod and i_Prod.It should
The factor can be the constant selected in order to compensate for maximum uncertainty, or can determine and calibrate by drawing.
Wanting to mention motor 2 under target engine speed that the engine of vehicle is changed to electrical energy supply system
The maximum electric power of confession, Pelec_Max_dispo:
Pelec_Max_dispo=| Rend_Alt_d é bit_Max*CouPle_Alt_d é bit_Max*2 π/60*
Rapport_Demul_Alt*N_mot_cible | * facteur_correction_P_max
Wherein:
N_mot_cible: wanting the target engine speed that vehicle is operated with it, in other words, information 21a,
Rend_Alt_d é bit_Max: with the maximum current being capable of providing at given rotating speed of target N_mot_cible
The yield of associated motor 2,
Couple_Alt_d é bit_Max: with the maximum electricity being capable of providing at given rotating speed of target N_mot_cible
The torque that associated motor 2 is extracted is flowed,
Report_Demul_Alt: make it possible to calculate turning for motor 2 according to given rotating speed of target N_mot_cible
The reduction ratio of speed,
Factor_correction_P_max: in view of probabilistic calculating Dynamic gene of above-mentioned parameter.The factor
It can be the constant selected in order to compensate for maximum uncertainty, or can determine and calibrate by drawing.
For the step, the operating drawing using motor 2 can be provided, wherein it is strong to provide electric current according to engine speed
Degree, torque and its yield.
Then compare the two electric power values, and if there is following formula is then directed to considered rotating speed of target, electric energy supply
The prediction energy state of system is referred to as " nominal " prediction energy state:
Pelec_conso≤Pelec_Max_dispo
In the con-trary case, for the rotating speed of target considered, the prediction energy state of electrical energy supply system is referred to as " drop
Grade " prediction energy state.
Desired operating and controlling vehicle engine speed, particularly reduce the engine speed of vehicle especially to reduce vehicle
Consumption and CO2 discharge in the case where, it is necessary to envisioning the revolving speed reduces shadow to the ability of the electrical energy production system of vehicle
It rings, to produce the electric energy for the various power electricity consuming apparatus being enough into activity always.
Therefore, third module 22 has the whether possible function of electric power scarcity risk of determining electrical energy supply system.This
Three modules 22 use the information 20c and 21d provided respectively by the first and second modules 20 and 21 as input thus.
The third module 22 determines and provides following as output:
Indicate the information 22a of the generation of the electric energy scarcity of the electrical energy supply system of vehicle.The information is its mesh in vehicle
Under front engine revolving speed and desired vehicle with its come the Future targets engine speed that operates under guarantee to supply to current consuming apparatus
Answer the image of the ability of electric energy.
If for current engine speed and/or wishing the electricity that vehicle is changed to its target engine speed vehicle
Energy supply system is not able to satisfy the needs of the current consuming apparatus in activity, referred to as " degrades " if electrical energy supply system is in other words
Current operation state and/or in the prediction operating condition that referred to as " degrades ", then the electric energy scarcity occurred is referred to as " facing
Boundary ".
In the con-trary case, if electrical energy supply system is in the current operation state for being known as " nominal " and in referred to as
The prediction operating condition of " nominal ", that is, if for current engine speed and wish that the target that vehicle is changed to it is sent out
The electrical energy supply system of motivation revolving speed vehicle can satisfy the needs of the current consuming apparatus in activity, then the electric energy scarcity occurred will claim
For " non-critical ".
Information 22a for example can be to be presented with Boolean form, and state is translated to " critical " or " non-critical ".
Then the information 22a determined in real time can be used to reduce CO2 discharge and reducing determining for fuel consumption in vehicles
The judgement about engine speed manipulation is made in terms of plan.
For example, the clutch of vehicle is opened, this makes it possible to internal combustion engine during the stage travelled with free wheel mode
It is separated with wheel, and it is expected to maintain internal combustion engine under idler revolutions, such as 800 to 900tr/ for motor vehicles
Min or so.This has the effect of making it possible to preferably utilizing the kinetic energy of vehicle and reducing its fuel consumption.In fact, at this
During stage, vehicle only consumes seldom fuel, because engine is in idling conditions and it is only with accumulation so far
Kinetic energy and advance.This is favored due to making engine/wheel separation, and it reduce the hairs opposite with the movement of vehicle
Motivation resistance.
However, traveling means that motor 2 produces the ability reduction of electric energy at these speeds, if consumption is started than this
The current consuming apparatus for the more energy that vehicle under machine revolving speed is capable of providing is in activity --- in particular to the anti-of vehicle
The current consuming apparatus of protection unit --- then there may be problems.In addition, the decline of electrical energy production may cause battery charge level
It reduces, this will affect the availability of such as engine shutdown and the function being restarted automatically.
For this purpose, Fig. 3 presents the supplement of module shown in Fig. 2.The supplement presents two add-on modules.
4th module 30, which has the function of determining, allows vehicle to travel with free wheel mode, this guarantees with free wheel mode
Under constant power consumption before and during the stage of traveling, the current consuming apparatus in activity will suitably be powered always.
4th module 30 uses following information as input:
Indicate the information 22a of the generation of the electric energy scarcity of the electrical energy supply system of vehicle.
4th module 30 determines and provides following as output:
Such as with the information 30a of Boolean form, vehicle whether is allowed to travel with free wheel mode for being translated into.
Therefore, this allow be based on indicate vehicle electrical energy supply system electric energy scarcity generation information 22a, the letter
Breath 22a travels associated engine speed calculating for with free wheel mode.The rotating speed of target corresponds generally to send out
Motivation idler revolutions.
Therefore, for with the associated target engine speed of free wheel mode driving vehicle, calculating indicates vehicle
The information 22a of the generation of the electric energy scarcity of electrical energy supply system, and can obtain one in the state having been explained or
Another: " critical " or " non-critical ".
Then, whether the verification information 22a during acknowledging time window of third module 30 is continuously in " non-critical " state.It should
With confirming the advantageous duration of window between 1 to 10 seconds.Minimum duration is selected to filter " non-critical " shape of transient state
State, to ensure under current state, that is to say, that in the case where calculating engine speed at the moment, vehicle can be into activity
Current consuming apparatus provides enough electric energy.The maximum duration of acknowledging time window is selected to join so that it is higher than used in this method
The duration of several corresponding transient phases.
If information 22a keeps " non-critical " state within the entire acknowledging time window duration, third module 30 is passed through
The stage travelled with free wheel mode being able to enter under associated target engine speed is provided from information 30a to vehicle
Permission.As long as information 22a keeps " non-critical " state, this allows to be maintained for effectively.
If information 22a switchs to " critical " state, third module 30 before the duration of acknowledging time window terminates
The permission for being able to enter the stage travelled with free wheel mode will not be provided via information 30a to vehicle.
In the case where obtaining allows, engine is separated by gear-box with wheel, is connect to reduce with engine
Wheel on frictional resistance.It reduce the fuel consumption of vehicle and pollutant emissions.
When during vehicle being in free wheel mode traveling, engine speed is also reduced to associated with the stage
Target engine speed (idler revolutions).Only declare the end in the stage by the wish of driver, for example, accelerate wish or
Deceleration wish.
This means that once giving the permission that vehicle is travelled with free wheel mode and vehicle is practically at freewheel
The state that mode travels then can not directly be such that the stage terminates.
Then the problem of being likely to occur is exactly that the electric energy of the change current consuming apparatus after allowing to travel with free wheel mode disappears
The problem of consumption.For example, driver can activate new current consuming apparatus, can to have after allowing to travel with free wheel mode
It can influence global energy balance (constant production/higher electricity needs).
5th module 31 has when vehicle is in determine the need for providing and the row when free wheel mode driving mode
Sail the function that the associated engine speed of mode increases.
5th module 31 uses following information as input:
Indicate the current electrical energy production ability of motor 2 and its information 20b of saturation degree.It is alternating current generator in motor 2
In the case of, which can be the open circuit duty ratio (RCO) of the exciting circuit of the alternating current generator.
5th module 31 determines and provides following as output:
Indicate to need or do not need to increase the associated internal-combustion engine rotational speed of the mode travelled with vehicle with free wheel mode
Information 31a.
The case where the information 20b of the current electrical energy production ability and its saturation degree that indicate motor 2 is open circuit duty ratio RCO
Under, the module 31 for internal combustion engine 4 with during free wheel mode traveling with it come the engine speed (idler revolutions) that operates
Detect whether motor 2 becomes to be saturated, that is, RCO=100%.
To detect the saturation of motor 2 during free wheel mode travel phase, due to the electricity of current consuming apparatus
The increase (for example, new current consuming apparatus is activated) of energy demand, it means that vehicle is no longer able to the power consumption into various activities
Equipment provides enough electric energy.5th module 31 sends the increment value of the idler revolutions of internal combustion engine 4 via information 31a, so as to
Increase the electrical energy production of motor 2 while the stage for keeping travelling with free wheel mode.With the vehicle shifting with freewheel mode
The increment value of the idler revolutions of associated internal combustion engine 4 is moved preferably between 100 and 150tr/min, which has limited driven
The person of sailing feels.
All modules of the invention can be contained in an electronic calculator, which includes acquisition device,
Pass through the required control device of the processing unit and the realization present invention of software instruction stored in memory.
The invention allows to be predicted according to engine speed when vehicle is by the electricity of vehicle when reducing its engine speed
The power electricity consuming apparatus that whether will make it possible to guarantee into all activities can be produced.On the one hand it depends on the current energy of vehicle
Amount state, the current energy state depend on the ability of electric energy needed for it provides current consuming apparatus at each moment, and another
Prediction of the aspect dependent on the differentiation that be directed to the energy state that new target engine speed is realized.
The invention allows to determine in the case where expectation reduces its engine speed, such as reduction CO2Discharge
The considerations of, whether vehicle is exposed to the state of electric energy scarcity.
Therefore, from the viewpoint of electric energy supply, the invention allows to the engine speed of intelligently operating and controlling vehicle, with
Just its consumption and its discharge are safely reduced.
Claims (10)
1. this is for determining the method for being connected to the energy state of electrical energy supply system of internal combustion engine (4) and current consuming apparatus (3)
System includes:
Motor (2), can extract the mechanical energy of internal combustion engine (4) to produce electric energy,
Electric energy accumulator (1),
The step of the method includes current charge level (20a) of the determination reservoir (1),
It is characterized in that, the method also includes following steps:
Determine the current electrical energy production ability of the motor (2), the ability indicate the electrical energy production of the motor (2) relative to
The present score of its maximum capacity,
If the current charge level (20a) of the reservoir (1) is higher than fixed charge level, it is determined that (20)
The electrical energy supply system is in the current energy state for being known as nominal current energy state, and the nominal current energy state is protected
Card supplies electric energy with current consuming apparatus of the nominal manner into activity, and the fixed charge level is to judge the storage for it
Storage (1) has the deposit for the load increase for being enough to alleviate the current consuming apparatus and determines the described current of the motor (2)
Whether electrical energy production ability is lower than the current consuming apparatus supply that only can ensure that for motor described in its (2) with nominal manner into activity
The fixed threshold value of electric energy.
2. the method according to claim 1, wherein the method also includes following steps:
Determine target engine speed (21a),
Determine the maximum power (21b, 21c) that the motor (2) is able to produce at the target engine speed (21a),
If electric energy consumed by the current consuming apparatus in activity is lower than fixed maximum power, (21) described system is determined
Prediction operating condition in referred to as nominal prediction operating condition, the nominal prediction operating condition are directed to the target engine
Revolving speed guarantees that the current consuming apparatus with nominal manner into activity supplies electric energy,
If the system is not on nominal current operation state and/or is not on nominal prediction operating condition, determine
(22) system is in the electric power scarcity state for being known as critical electric power scarcity state.
3. the method for controlling vehicle, the vehicle includes the electrical energy supply system for being connected to internal combustion engine (4) and current consuming apparatus (3),
If it is determined that it is characterized in that, the method includes according to the method described in claim 2, and wherein the system does not have
Electric power scarcity state in referred to as critical electric power scarcity state, then allow (30) in fixed target engine speed
The internal combustion engine (4) are manipulated under (21a).
4. according to method described in previous claim, which is characterized in that if continuously sentenced during scheduled acknowledging time window
The fixed system is not on the electric power scarcity state of referred to as critical electric power scarcity state, then allows to start in fixed target
The internal combustion engine (4) are manipulated under machine revolving speed (21a).
5. according to the method described in claim 4, it is characterized in that, the duration of the acknowledging time window 1 to 10 seconds it
Between.
6. according to method described in one in claim 3 to 5, which is characterized in that the vehicle can be with freewheel mode
It is mobile, the target engine speed be with the associated tickover revolving speed of the movement of the vehicle of freewheel mode.
7. according to the method described in claim 6, it is characterized in that, during the vehicle is in freewheel mode,
The current electrical energy production ability of the motor (2) is detected,
If having reached the maximum power production capacity of the motor (2) under tickover revolving speed, will with freedom
The associated tickover revolving speed of the movement of the vehicle of wheel mode increases fixed value.
8. the method according to the description of claim 7 is characterized in that with the associated sky of the movement of the vehicle of freewheel mode
Turn the increment value of engine speed between 100 to 150 revs/min.
9. electronic computer, which is characterized in that it includes acquisition device, passes through the processing of software instruction stored in memory
Control device needed for device and realization method according to one of the preceding claims.
10. vehicle comprising be connected to the electrical energy supply system of internal combustion engine (4) and current consuming apparatus (3), which includes:
Motor (2), can extract the mechanical energy of the engine to produce electric energy,
Electric energy accumulator (1),
The vehicle further includes the electronic computer according to previous claim.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1653429A FR3050160B1 (en) | 2016-04-19 | 2016-04-19 | PROCESS FOR DETERMINING AN ENERGY STATE OF AN ELECTRICAL ENERGY SUPPLY SYSTEM |
| FR1653429 | 2016-04-19 | ||
| PCT/FR2017/050602 WO2017182722A1 (en) | 2016-04-19 | 2017-03-15 | Method for determining an energy state of an electrical power supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109072797A true CN109072797A (en) | 2018-12-21 |
| CN109072797B CN109072797B (en) | 2021-12-17 |
Family
ID=56322120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780024159.9A Active CN109072797B (en) | 2016-04-19 | 2017-03-15 | Method for determining an energy state of an electrical energy supply system |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3445962A1 (en) |
| CN (1) | CN109072797B (en) |
| FR (1) | FR3050160B1 (en) |
| WO (1) | WO2017182722A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08214469A (en) * | 1995-01-31 | 1996-08-20 | Nippondenso Co Ltd | Power generation controller for vehicle |
| US20040174018A1 (en) * | 2003-03-06 | 2004-09-09 | Yasumitsu Itoh | Power generation controller for AC generator |
| CN101246973B (en) * | 2007-02-15 | 2010-06-02 | 株式会社电装 | Vehicle-use battery monitoring apparatus |
| US20110088658A1 (en) * | 2009-10-15 | 2011-04-21 | Gm Global Technology Operations, Inc. | Method and apparatus for optimizing engine idle speed in a vehicle |
| CN105429260A (en) * | 2015-12-14 | 2016-03-23 | 重庆交通大学 | Power supply system used for fuel driven patrol car and control method thereof |
| FR3026992A1 (en) * | 2014-10-09 | 2016-04-15 | Continental Automotive France | METHOD FOR CONTROLLING A BATTERY CHARGING DEVICE, IN THE IDLING MOTOR REGIME |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2932848B1 (en) | 2008-06-24 | 2011-06-17 | Peugeot Citroen Automobiles Sa | METHOD FOR CONTROLLING THE DEVICE FOR AUTOMATICALLY STOPPING AND RESTARTING THE THERMAL MOTOR OF A VEHICLE |
-
2016
- 2016-04-19 FR FR1653429A patent/FR3050160B1/en active Active
-
2017
- 2017-03-15 CN CN201780024159.9A patent/CN109072797B/en active Active
- 2017-03-15 EP EP17717776.3A patent/EP3445962A1/en not_active Withdrawn
- 2017-03-15 WO PCT/FR2017/050602 patent/WO2017182722A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08214469A (en) * | 1995-01-31 | 1996-08-20 | Nippondenso Co Ltd | Power generation controller for vehicle |
| US20040174018A1 (en) * | 2003-03-06 | 2004-09-09 | Yasumitsu Itoh | Power generation controller for AC generator |
| CN101246973B (en) * | 2007-02-15 | 2010-06-02 | 株式会社电装 | Vehicle-use battery monitoring apparatus |
| US20110088658A1 (en) * | 2009-10-15 | 2011-04-21 | Gm Global Technology Operations, Inc. | Method and apparatus for optimizing engine idle speed in a vehicle |
| FR3026992A1 (en) * | 2014-10-09 | 2016-04-15 | Continental Automotive France | METHOD FOR CONTROLLING A BATTERY CHARGING DEVICE, IN THE IDLING MOTOR REGIME |
| CN105429260A (en) * | 2015-12-14 | 2016-03-23 | 重庆交通大学 | Power supply system used for fuel driven patrol car and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3050160B1 (en) | 2021-02-19 |
| FR3050160A1 (en) | 2017-10-20 |
| WO2017182722A1 (en) | 2017-10-26 |
| EP3445962A1 (en) | 2019-02-27 |
| CN109072797B (en) | 2021-12-17 |
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