A kind of orderly charging system of electric car based on wireless communication and its methodTechnical field
The invention belongs to the orderly charging technique fields of electric car, relate generally to a kind of electric car based on wireless communicationOrderly charging system and its method.
Background technique
Energy conservation has become the developing direction of Global Auto industry with new-energy automobile, and electric car is extensive at home and abroadIt promotes, pure electric automobile and plug-in hybrid-power automobile add up volume of production and marketing in the trend increased rapidly.In recent years, the Chinese governmentA series of preferential policy of excitation electric automobile market development is promoted.Under the encouragement of policy, electric automobile market obtains fluffyThe exhibition of breaking out, future will form certain market scale.
And the scale charging behavior formed after electric car scale also becomes the topic of social extensive concern.Electronic vapourFor vehicle as a kind of new energy motor, energy resource supply end is power grid.It charges to power grid not although single vehicle is connected to the gridToo big influence, but when a large amount of automobiles without arrangement be connected to the grid charged when, certain pressure can be brought to power grid surely, is ledThe growth for causing its load, reduces power quality, increases the difficulty of operation of power networks control, thus with regard to safety and stability aspect to electricityForce system generates very big harm.On the one hand, totally considerable charge volume may cause that electrical network capacity is insufficient, frequency is inclined to electric carIt moves and daily load peak-valley difference increases, on the other hand, electric car is as the load with schedulability, demand response potentialityWith huge excavated space.
The rise of " internet+" brings the opportunity of transformation development model for power industry.By the height covering of internetRate and high-transmission efficiency realize interacting for power grid and user, promote Demand Side Response, make power grid towards more intelligence with it is efficientDirection is developed.It orderly charges field in electric car, user is connected electric car and charging system by internet mobile terminalIt connects, realizes the control to electric car charging behavior, while orderly charging scheme can be passed through internet platform by Charge Management personIt is communicated to customer mobile terminal, the two is attached by internet and is run with the process i.e. electric car car networking system interactedMechanism.The system realizes user, electric car and charging system three contact by internet mobile terminal, is to implement orderlyThe carrier of charging scheme.
Summary of the invention
For the adverse effect of the unordered charging power grid of extensive electric car access power grid, and in order to give full play to electronic vapourVehicle charges the adjustment effect of Load on Electric Power Grid, the present invention propose a kind of orderly charging system of the electric car based on wireless communication andIts method.For the present invention by the guidance of tou power price, the combining wireless communication technology realizes that electric car orderly charges, and reaches reductionThe problems such as system loading peak-valley difference, the as far as possible power variation of ballast system, effectively increases the power supply reliability of power grid.
The technical solution of present system is a kind of orderly charging system of electric car based on wireless communication, comprising: isControl unit, the first wireless communication module, vehicular control unit, vehicle-carrying display screen, Vehicular charging navigation module, second unite wirelesslyCommunication module, charging pile, third wireless communication module；
The system control unit is connect with first wireless communication module by conducting wire；The vehicular control unit withThe vehicle-carrying display screen is connected by conducting wire；The vehicular control unit and the Vehicular charging navigation module are connected by conducting wireIt connects；The vehicular control unit is connect with second wireless communication module by conducting wire；The charging pile and the third withoutLine communication module is connected by conducting wire；First wireless communication module and second wireless communication module are by wireless communicationMode connects；Mode is connect first wireless communication module by wireless communication with the third wireless communication module.
The vehicular control unit passes through vehicle current residual electricity, battery rated capacity, car owner the estimated time of picking up the carSecond wireless communication module is wirelessly transmitted to first wireless communication module；First wireless communication module is by vehicleCurrent residual electricity, battery rated capacity, the estimated pick-up time tranfer of car owner to the system control unit；The system controlThe charging instruction of the charging time planned section is transmitted to first wireless communication module by unit；First wireless communicationThe charging instruction of the charging time planned section is wirelessly transmitted to the third wireless communication module by module；The third is wirelessThe charging instruction of the charging time planned section is transmitted to charging pile by communication module.
The technical solution of present system is a kind of orderly charging method of electric car based on wireless communication, is specifically includedFollowing steps:
Step 1: system control unit obtains the prediction of regional power system conventional load historical data when daily from power distribution networkAdvise load；
Step 2: when car owner's preparation charging, passing through vehicle-carrying display screen and submit preparation charging instruction, Vehicular charging navigation moduleCharging pile navigation scheme is provided for car owner, charging interconnection is established when car owner reaches charging pile；
Step 3: car owner picks up the car the time after reaching charging pile by the way that vehicle-carrying display screen input is estimated, in conjunction with information of vehicles with numberAccording to the form of packet, mode is transmitted to system control unit by wireless communication, and system control unit is planned according to information of vehiclesAnd charging planning information is wirelessly transmitted to vehicle and is charged；
Step 4: car owner selects Vehicular charging mode by vehicle-carrying display screen.
Preferably, conventional load prediction data described in step 1 is the load number not comprising electric car charging loadAccording to；
Same day conventional load is predicted described in step 1 are as follows:
It was divided into Y period every T hours by 24 hours one day, Y=24/T, then same day conventional load can be expressed asL1,L2,L3,...,LY；
Regard electric load as sequences y (t) that a column change with time t, then electric load was once seen every T hoursIt surveys；
For the past M days history Power system load datas as conventional load historical data described in step 1, by past MIt conventional load historical data was observed value every T hours, the quantity of history Power system load data be N=(M*24)/T；
History Power system load data is in t1,t2,….,tpThe observation at moment is expressed asThen t moment is predictedSame day conventional load are as follows:
Wherein, p, q are arma modeling order,θ1,θ2,...,θqFor model parameter, atFor white noise sequenceIt is listed in the value i.e. initial time interference volume of t moment, at-1,at-2,...,at-qRespectively white noise sequence in t-1, t-2 ..., t-The value at q moment is equivalent to initial time interference volume atInfluence to preceding q step, yt-1,yt-2,...,yt-pFor p load of past valueNumerical value；
The statistical analysis of model auto-correlation coefficient and partial correlation coefficient is carried out so that it is determined that model order with historical load dataNumber (p, q), the history Power system load data using history Power system load data to model prediction M days a few days ago are trained, and are usedThe recursive least squares algorithm estimation model parameter of popularization establishes arma modeling；
Preferably, Vehicular charging navigation module described in step 2 provides charging pile navigation scheme for car owner are as follows:
Charged state is transmitted to third wireless communication module by charging pile, and third wireless communication module transmits charged stateTo the first wireless communication module, charged state is transmitted to system control unit, system control unit by the first wireless communication moduleIt is that idle charging pile is transmitted to the first wireless communication module, and is wirelessly transmitted to by the first wireless communication module by charged stateSecond wireless communication module, the charged state that vehicular control unit receives the transmission of the second wireless communication module is idle chargingStake, and by Vehicular charging navigation module combination vehicle position information and road conditions information, it provides for car owner apart from recently, placeIn the charging pile navigation scheme of idle state；
Preferably, information of vehicles described in step 3 includes: vehicle reaches charging station time tst, the specified appearance of Vehicular batteryMeasure Br, Vehicular charging moment battery capacity percentage SOCst,
Information of vehicles is transmitted to the second wireless communication module by vehicular control unit, and the second wireless communication module believes vehicleBreath is sent to the first wireless communication module, and is transmitted to system control unit by the first wireless communication module；
System control unit described in step 3 is planned according to information of vehicles are as follows:
One day 24 hour was divided into Y=24/T period every T hours, indicates j-th of period in one day with j,xjIt indicates that the charged state of electric car, value state are 0 and 1, indicates charging shape of the electric car within j-th of periodState, xj=1 indicates charging, otherwise does not charge for 0 expression；
It carries out taking system loading peak-valley difference as the smallest orderly charging optimization by genetic algorithm, in the vehicle parking periodIt is interior to be moved to the charging of paddy phase the charging time；
Specifically, the input quantity of algorithm are as follows: the estimated time t that picks up the car of car ownerenAnd vehicle reaches charging station time tst, vehicleBattery rated capacity Br, Vehicular charging moment battery capacity percentage SOCst, then vehicle is in parking area down time tstayIt canIt indicates are as follows:
tstay=ten-tst
Charging time tcIt may be expressed as:
Wherein, SOCenFor charging finishing time battery capacity percentage, η is electric car charge efficiency, and P is charging functionRate；
In down time tstayIt is interior by charging time tcOptimization, can be converted into parking interval tstayInterior charging time sectionNumber HcQuantity and position change, will be divided within 24 hours one day Y period, each period represent when it is T hours a length of, stopNumber of segment H when vehiclestayWith charge period number HcIt can respectively indicate are as follows:
In formula,Expression rounds up symbol, even if the charging duration of the last one i.e. charge period is T hours discontented,The charging time is divided into according to T hours durations；
Optimization problem converts at this time are as follows: charge period number HcIn parking interval number HstayThe change of interior distribution, electric car fillElectricity condition xjIn parking interval HstayInterior value is adjustable (taking 0 or 1), and section is moved to the paddy phase when charging, then corresponding paddy phase xj1 is taken,Remaining uncharged period xj0 is taken, and so on；
It is that may be expressed as: to reduce load peak-valley difference as the optimization aim of target
F=min (Lmax-Lmin)
=min [max (L1+Px1,L2+Px2,...,LY+PxY)-min(L1+Px1,L2+Px2,...,LY+PxY)]
Wherein, L1,L2,L3,...,LYIndicate that the conventional load of each period in one day Y period described in step 1 is pre-Numerical value is surveyed, P is electric car charge power；
It is iterated to calculate by genetic algorithm, filters out the charged state x for reducing load peak-valley difference1,x2,x3,...xYIt is excellentNeutralizing, charge sequence is moved to paddy phase charging (x at this timejPaddy phase state be 1), the initial time that vehicle orderly charges byStand moment tstMove tst_y, to avoid the frequent on-off charging of a large amount of vehicles from causing to impact to power grid, the continuous (x of charge periodjFor1 state is continuous) orderly final moment of charging complete be expressed as tst_y+tc, due to orderly charging modes and recharging modeIn charge period tcIt is continuous, charge period t can be passed throughcThe duration for falling in peak phase, flat phase and paddy phase carries out charging expenseIt formulates；
Charge planning information described in step 3 are as follows: the final moment t of orderly charging completest_y+tc, recharging completeFinal moment tst+tc, orderly charging modes charging expense p1,total, recharging mode charging expense p2,total；
Specifically, the peak valley situation of the load prediction according to step 1 formulates the charging expense of orderly charging modesp1,totalIt can indicate are as follows:
p1,total=(t1,ppp+t1,fpf+t1,vpv)α1
Wherein, t1,pIndicate charging duration of the orderly charging vehicle in charging station charging in the load peak phase, t1,fIt indicatesCharging duration of the sequence charging vehicle when charging station charges in the load flat phase, t1,vIndicate that orderly charging vehicle charges in charging stationWhen charging duration in the load paddy phase, ppIndicate the basic electricity price of load peak phase, pfIndicate the basic electricity price of load flat phase, pvTableShow the basic electricity price of load paddy phase, α1For the electricity price coefficient that orderly charges；
The peak valley situation of the load prediction according to step 1 obtains the flat phase duration of load peak phase duration, load and bearsLotus paddy phase duration formulates the charging expense p of recharging mode2,totalIt can indicate are as follows:
p2,total=(t2,ppp+t2,fpf+t2,vpv)α2
Wherein, t2,pIndicate recharging vehicle when charging station charges in charging duration, that is, load peak phase of load peak phaseDuration, t2,fIndicate charging duration, that is, load flat phase duration of the recharging vehicle when charging station charges in the load flat phase, t2,vIndicate charging duration, that is, load paddy phase duration of the recharging vehicle when charging station charges in the load paddy phase, ppIndicate load peakThe basic electricity price of phase, pfIndicate the basic electricity price of load flat phase, pvIndicate the basic electricity price of load paddy phase, α2For recharging electricityValence coefficient；
Electricity price coefficient value range are as follows:
When car owner selects orderly charging, discount factor α=α1Take the part less than 1, α1For the electricity price coefficient that orderly charges, takeBeing worth range is (1-M, 1), in the Y period of division, when the orderly charge period of planning is in period paddy phase and accounts for entire chargingThe ratio of section is higher, then electricity charge discount dynamics is bigger, and charging expense is lower；
When car owner selects recharging, discount factor α=α2Take the part greater than 1, α2For recharging electricity price coefficient, takeBeing worth range is (1,1+M), and higher in the ratio that the charging duration of load peak period phase accounts for entire charge period, discount factor α takesPart less than 1, charging expense are higher；
System control unit will charge planning information, that is, orderly charging complete final moment, recharging complete it is finalMoment, the charging expense of orderly charging modes, the charging expense of recharging mode are transmitted to by the first wireless communication moduleSecond wireless communication module, vehicular control unit, which is received, is transmitted to vehicle by the charging planning information that the second wireless communication module transmitsCarry display screen；
Preferably, Vehicular charging mode described in step 4 is two kinds:
The first is according to the orderly charging modes of planning information, and the participation network load peak clipping for being actively engaged in systems organization is filled outThe regulation of paddy, charging expense is lower, and charge period is a period of time in the vehicle parking period；
Second is common recharging mode, is charged costly, but access charging interface can charge at once；
Car owner selects one of Vehicular charging mode to charge by vehicle-carrying display screen.
Compared with prior art, the present invention has the advantage that
Electric car based on wireless communication orderly charges optimal way, and one comes for a user, can greatly reduce electricityElectrical automobile charging cost as far as possible guides electric car toward the paddy phase, and two are conducive to the peak load shifting of power grid.
According to and the charging responsiveness of electric car car owner carry out the real-time discount of tou power price and divide so that entire systemOrderly charging process of uniting more accurate and effective；
By considering that user response situation carries out charging push to car owner, making car owner, quickly participation is orderly charged as far as possible,Improve the efficiency of system order charging；
Make car owner user that itself trip wish be combined to carry out electric car charging controlled central based on wireless communication techniqueSelection, Vehicular charging navigation module provides charging navigation scheme in combination with road conditions user, and car owner can be according to own situation certainlyMaster decides whether to participate in orderly to charge, and has very high Democracy.
Detailed description of the invention
Fig. 1: the structural schematic diagram of present system；
Fig. 2: the orderly charging flow figure of the electric car of the method for the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based onEmbodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every otherEmbodiment shall fall within the protection scope of the present invention.
Fig. 1 is system structure diagram of the invention.The technical solution of present system is a kind of electricity based on wireless communicationThe orderly charging system of electrical automobile, comprising: system control unit, the first wireless communication module, vehicular control unit, car-mounted displayScreen, Vehicular charging navigation module, the second wireless communication module, charging pile, third wireless communication module；
The system control unit is connect with first wireless communication module by conducting wire；The vehicular control unit withThe vehicle-carrying display screen is connected by conducting wire；The vehicular control unit and the Vehicular charging navigation module are connected by conducting wireIt connects；The vehicular control unit is connect with second wireless communication module by conducting wire；The charging pile and the third withoutLine communication module is connected by conducting wire；First wireless communication module and second wireless communication module are by wireless communicationMode connects；Mode is connect first wireless communication module by wireless communication with the third wireless communication module.
The vehicular control unit passes through vehicle current residual electricity, battery rated capacity, car owner the estimated time of picking up the carSecond wireless communication module is wirelessly transmitted to first wireless communication module；First wireless communication module is by vehicleCurrent residual electricity, battery rated capacity, the estimated pick-up time tranfer of car owner to the system control unit；The system controlThe charging instruction of the charging time planned section is transmitted to first wireless communication module by unit；First wireless communicationThe charging instruction of the charging time planned section is wirelessly transmitted to the third wireless communication module by module；The third is wirelessThe charging instruction of the charging time planned section is transmitted to charging pile by communication module.
The system control unit type selecting is Dell commercial affairs machine；The first wireless communication module type selecting isESP8266WiFi chip；The vehicular control unit type selecting is arm processor；The vehicle-carrying display screen type selecting is to selectJCP200-070 type Vehicular display device；The Vehicular charging navigation module type selecting is OEMStar GPS navigation module；Described secondWireless communication module type selecting is ESP8266WiFi chip；The charging pile type selecting is the AC charging of ZCJ21-A-32A220V seriesStake；The third wireless communication module type selecting is ESP8266WiFi chip.
Embodiments of the present invention are introduced below with reference to Fig. 1 to Fig. 2.Embodiment of the present invention specific technical solution is one kindThe orderly charging method of electric car based on wireless communication, specifically includes the following steps:
Step 1: system control unit obtains the prediction of regional power system conventional load historical data when daily from power distribution networkAdvise load；
Conventional load prediction data described in step 1 is the load data not comprising electric car charging load；
Same day conventional load is predicted described in step 1 are as follows:
It was divided into Y=48 period every T=0.5 hours by 24 hours one day, Y=24/T, then same day conventional load canTo be expressed as L1,L2,L3,...,LY；
Regard electric load as sequences y (t) that a column change with time t, then electric load was once seen every T hoursIt surveys；
For the past M=7 days history Power system load datas as conventional load historical data described in step 1, incited somebody to actionM=7 days conventional load historical datas are gone to be observed value every T=0.5 hours, the quantity of history Power system load data isN=(M*24)/T；
History Power system load data is in t1,t2,….,tpThe observation at moment is expressed asThen t moment is predictedSame day conventional load are as follows:
Wherein, p, q are arma modeling order,θ1,θ2,...,θqFor model parameter, atFor white noise sequenceIt is listed in the value i.e. initial time interference volume of t moment, at-1,at-2,...,at-qRespectively white noise sequence in t-1, t-2 ..., t-The value at q moment is equivalent to initial time interference volume atInfluence to preceding q step, yt-1,yt-2,...,yt-pFor p load of past valueNumerical value；
The statistical analysis of model auto-correlation coefficient and partial correlation coefficient is carried out so that it is determined that model order with historical load dataNumber (p, q), the history Power system load data using history Power system load data to model prediction M=7 days a few days ago are trained, adoptArma modeling is established with the recursive least squares algorithm of popularization estimation model parameter；
Step 2: when car owner's preparation charging, passing through vehicle-carrying display screen and submit preparation charging instruction, Vehicular charging navigation moduleCharging pile navigation scheme is provided for car owner, charging interconnection is established when car owner reaches charging pile；
Vehicular charging navigation module described in step 2 provides charging pile navigation scheme for car owner are as follows:
Charged state is transmitted to third wireless communication module by charging pile, and third wireless communication module transmits charged stateTo the first wireless communication module, charged state is transmitted to system control unit, system control unit by the first wireless communication moduleIt is that idle charging pile is transmitted to the first wireless communication module, and is wirelessly transmitted to by the first wireless communication module by charged stateSecond wireless communication module, the charged state that vehicular control unit receives the transmission of the second wireless communication module is idle chargingStake, and by Vehicular charging navigation module combination vehicle position information and road conditions information, it provides for car owner apart from recently, placeIn the charging pile navigation scheme of idle state；
Step 3: car owner picks up the car the time after reaching charging pile by the way that vehicle-carrying display screen input is estimated, in conjunction with information of vehicles with numberAccording to the form of packet, mode is transmitted to system control unit by wireless communication, and system control unit is planned according to information of vehiclesAnd charging planning information is wirelessly transmitted to vehicle and is charged；
Information of vehicles described in step 3 includes: vehicle reaches charging station time tst, Vehicular battery rated capacity Br, vehicleCharging moment battery capacity percentage SOCst,
Information of vehicles is transmitted to the second wireless communication module by vehicular control unit, and the second wireless communication module believes vehicleBreath is sent to the first wireless communication module, and is transmitted to system control unit by the first wireless communication module；
System control unit described in step 3 is planned according to information of vehicles are as follows:
One day 24 hour was divided into Y=24/T=48 period every T=0.5 hours, in one day is indicated with jJ period, xjIt indicates that the charged state of electric car, value state are 0 and 1, indicates electric car within j-th of periodCharged state, xj=1 indicates charging, otherwise does not charge for 0 expression；
It carries out taking system loading peak-valley difference as the smallest orderly charging optimization by genetic algorithm, in the vehicle parking periodIt is interior to be moved to the charging of paddy phase the charging time；
Specifically, the input quantity of algorithm are as follows: the estimated time t that picks up the car of car ownerenAnd vehicle reaches charging station time tst, vehicleBattery rated capacity Br, Vehicular charging moment battery capacity percentage SOCst, then vehicle is in parking area down time tstayIt canIt indicates are as follows:
tstay=ten-tst
Charging time tcIt may be expressed as:
Wherein, SOCenFor charging finishing time battery capacity percentage, η is electric car charge efficiency, and P is charging functionRate；
In down time tstayIt is interior by charging time tcOptimization, can be converted into parking interval tstayInterior charging time sectionNumber HcQuantity and position change, Y=48 period will be divided within 24 hours one day, the when a length of T=that each period represents0.5 hour, parking interval number HstayWith charge period number HcIt can respectively indicate are as follows:
In formula,Expression rounds up symbol, even if to be discontented with T=0.5 small for the charging duration of the last one i.e. charge periodWhen, also the charging time is divided into according to T=0.5 hours durations；
Optimization problem converts at this time are as follows: charge period number HcIn parking interval number HstayThe change of interior distribution, electric car fillElectricity condition xjIn parking interval HstayInterior value is adjustable (taking 0 or 1), and section is moved to the paddy phase when charging, then corresponding paddy phase xj1 is taken,Remaining uncharged period xj0 is taken, and so on；
It is that may be expressed as: to reduce load peak-valley difference as the optimization aim of target
F=min (Lmax-Lmin)
=min [max (L1+Px1,L2+Px2,...,LY+PxY)-min(L1+Px1,L2+Px2,...,LY+PxY)]
Wherein, L1,L2,L3,...,LYIndicate that the conventional load of each period in one day Y period described in step 1 is pre-Numerical value is surveyed, P is electric car charge power；
It is iterated to calculate by genetic algorithm, filters out the charged state x for reducing load peak-valley difference1,x2,x3,...xYIt is excellentNeutralizing, charge sequence is moved to paddy phase charging (x at this timejPaddy phase state be 1), the initial time that vehicle orderly charges byStand moment tstMove tst_y, to avoid the frequent on-off charging of a large amount of vehicles from causing to impact to power grid, the continuous (x of charge periodjFor1 state is continuous) orderly final moment of charging complete be expressed as tst_y+tc, due to orderly charging modes and recharging modeIn charge period tcIt is continuous, charge period t can be passed throughcThe duration for falling in peak phase, flat phase and paddy phase carries out charging expenseIt formulates；
Charge planning information described in step 3 are as follows: the final moment t of orderly charging completest_y+tc, recharging completeFinal moment tst+tc, orderly charging modes charging expense p1,total, recharging mode charging expense p2,total；
Specifically, the peak valley situation of the load prediction according to step 1 formulates the charging expense of orderly charging modesp1,totalIt can indicate are as follows:
p1,total=(t1,ppp+t1,fpf+t1,vpv)α1
Wherein, t1,pIndicate charging duration of the orderly charging vehicle in charging station charging in the load peak phase, t1,fIt indicatesCharging duration of the sequence charging vehicle when charging station charges in the load flat phase, t1,vIndicate that orderly charging vehicle charges in charging stationWhen charging duration in the load paddy phase, ppIndicate the basic electricity price of load peak phase, pfIndicate the basic electricity price of load flat phase, pvTableShow the basic electricity price of load paddy phase, α1=0.9 is orderly charging electricity price coefficient；
The peak valley situation of the load prediction according to step 1 obtains the flat phase duration of load peak phase duration, load and bearsLotus paddy phase duration formulates the charging expense p of recharging mode2,totalIt can indicate are as follows:
p2,total=(t2,ppp+t2,fpf+t2,vpv)α2
Wherein, t2,pIndicate recharging vehicle when charging station charges in charging duration, that is, load peak phase of load peak phaseDuration, t2,fIndicate charging duration, that is, load flat phase duration of the recharging vehicle when charging station charges in the load flat phase, t2,vIndicate charging duration, that is, load paddy phase duration of the recharging vehicle when charging station charges in the load paddy phase, ppIndicate load peakThe basic electricity price of phase, pfIndicate the basic electricity price of load flat phase, pvIndicate the basic electricity price of load paddy phase, α2=1.1 be independently to fillElectric electricity price coefficient；
Electricity price coefficient value range are as follows:
When car owner selects orderly charging, discount factor α=α1Take the part less than 1, α1For the electricity price coefficient that orderly charges, takeBeing worth range is (1-M, 1), in the Y period of division, when the orderly charge period of planning is in period paddy phase and accounts for entire chargingThe ratio of section is higher, then electricity charge discount dynamics is bigger, and charging expense is lower；
When car owner selects recharging, discount factor α=α2Take the part greater than 1, α2For recharging electricity price coefficient, takeBeing worth range is (1,1+M), and higher in the ratio that the charging duration of load peak period phase accounts for entire charge period, discount factor α takesPart less than 1, charging expense are higher；
System control unit will charge planning information, that is, orderly charging complete final moment, recharging complete it is finalMoment, the charging expense of orderly charging modes, the charging expense of recharging mode are transmitted to by the first wireless communication moduleSecond wireless communication module, vehicular control unit, which is received, is transmitted to vehicle by the charging planning information that the second wireless communication module transmitsCarry display screen；
Step 4: car owner selects Vehicular charging mode by vehicle-carrying display screen；
Vehicular charging mode described in step 4 is two kinds:
The first is according to the orderly charging modes of planning information, and the participation network load peak clipping for being actively engaged in systems organization is filled outThe regulation of paddy, charging expense is lower, and charge period is a period of time in the vehicle parking period；
Second is common recharging mode, is charged costly, but access charging interface can charge at once；
Car owner selects one of Vehicular charging mode to charge by vehicle-carrying display screen.
Although system control unit, the first wireless communication module, vehicular control unit, vehicle-mounted aobvious is used more hereinThe terms such as display screen, Vehicular charging navigation module, the second wireless communication module, charging pile, third wireless communication module, but do not arrangeA possibility that except other terms are used.The use of these items is only for more easily describing essence of the invention, themBeing construed to any additional limitation is disagreed with spirit of that invention.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to thisThe limitation of invention patent protection range, those skilled in the art under the inspiration of the present invention, are not departing from power of the present inventionBenefit requires to make replacement or deformation under protected ambit, fall within the scope of protection of the present invention, this hairIt is bright range is claimed to be determined by the appended claims.