Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, invent a kind of electronic vapour comprising optimum path search system
Car, helps driver to select the optimum charging station on optimum traffic route and this route, helps driver to reduce money or time
Cost.
The present invention provide technical scheme be:A kind of electric automobile, electric automobile includes battery and optimum path search system, road
Footpath optimization system is communicated with charging communication network with communication, between charging communication network and multiple vehicle charging station with
Communication is communicated, when electric automobile needs to charge, using optimum path search system by the charge parameter of electric automobile
To the communication network that charges, charging communication network sends above- mentioned information to multiple charging stations to information transfer, after charging station receive information, instead
The charging prediction information that feedback charging station provides for this electric automobile is sent to electric automobile by charging communication network.
The charge parameter information of described electric automobile includes:The battery capacity of electric automobile, electric automobile internally-powered battery
Current SOC, allow charge power scope, expectation charge period.Charging prediction information includes:Charge period, charge power and
Charge univalent information.Optimum path search system includes:Charging instruction input module, available path determining module, charged state module,
Charging station selects and path selection module and display module.Charging instruction input module is used for obtaining electric automobile the need of filling
The information of electricity, this information can come from the charging instruction of user input or the charging instruction automatically generating according to battery electric quantity.
Automobile current geographic position information and destination geographical location information are inputted its internal map letter by available path determining module
Breath system, determines all ride travelling from current location to destination from cartographic information system, and will be defeated for this information
Enter and select and path selection module to charging station.Charged state module receives charging instruction at charging instruction input module
Afterwards, battery current SOC state is calculated according to battery status, and calculate power bracket, the charging institute needing to charge according to this SOC
The time needing and charge period, and enter this information into charging station selection and path selection module.
Charging station selects and path selection module comprises communication module, and it utilizes communication module to join the charging of electric automobile
Number information sends all charging stations to ride, and all charging stations on drive route select to charging station and path choosing
Select module feedback charge could, charge period and the corresponding univalent information that charges of charge period, charging station selects and Path selection
The power of the charging of electric automobile that ride that module sends according to available path determining module, charged state module send
Scope, charge required time, charge period information and the charging that charging station feeds back could, charge period and charge period corresponding
The univalent information that charges the ride of optimum and the charging that be located at this ride on are calculated and determined out according to optimizing mode
Stand, and the charging station by optimum ride and on this ride sends to display module.Display module is by optimum
Ride and be located at this ride on charge station information shown in the form of cartographic information, to facilitate driver to carry out
Select or confirm.
Optimizing mode comprises the steps:1)Determine optimization aim:Drive driving time required for destination and
Charging required time sum is minimum on the way;2)Determine optimization method:Tij=Si/Vi+Bij/CVij, wherein, Tij represents from current
Position travels to target ground, and j-th charging station charges on the i-th paths and the i-th paths, and completing above-mentioned task needs to spend altogether
The time taken, Si is the circuit distance of i-th driving path, and Vi is the road speed estimated for the i-th paths jam situation,
Bij is that automobile is travelled by the i-th paths to the electricity of j-th charging station moment automobile needs charging, and CVij is on the i-th paths
The charge rate that can be provided by of j-th charging station, it is that the charge power that this electric automobile can be provided by just becomes with charging station
Than, Vi is the speed estimating out according to history driving recording, by the corresponding Si of each available charging station of available planning driving path,
Vi, Bij and CVij information is brought above-mentioned formula respectively into and is calculated the corresponding Tij of each charging station, from multiple calculated Tij
Select minimum of a value Tijmin, Tijmin can be a numerical value can also be multiple numerical value, can just calculated be less than
The Tij of certain time threshold value is all set as Tijmin;3) by the charging station in planning driving path i corresponding to Tijmin and this path
J is defined as optimum planning driving path and its corresponding charging station.
Optimizing mode comprises the steps:1)Determine optimization aim:The unit price that charges is minimum;2)Determine optimization method:Cij=
Cj+Cj×(Sij-S0)/S0, wherein, Cij represents charging unit price after the conversion of j-th charging station charging on the i-th paths, Cj
Corresponding electric automobile travels the charging station forecast unit price of the charge period to this j-th charging station, Sij along the i-th paths
For selecting after on the i-th paths, j-th charging station is as charging station, automobile travels from it to the traveling of destination with being currently located
Distance, that is, the i-th paths travel to the distance of destination, S0 represents the air line distance being currently located ground distance objective ground;By S0
And each available charging station corresponding Cj, Sij of available planning driving path brings above-mentioned formula respectively into and calculates each charging station pair
The Cij answering, selects minimum of a value Cijmin, Cijmin can be a numerical value can also be many from multiple calculated Cij
Individual numerical value, can all be set as Cijmin by the just calculated Cij less than certain threshold value;3) by the row corresponding to Cijmin
Charging station j on bus or train route footpath i and this path is defined as optimum planning driving path and its corresponding charging station.
Implement the electric automobile charging station of the present invention, have the advantages that, using optimum path search system of the present invention
Electric automobile can be in conjunction with self-demand, and reasonable selection optimum charging scheme closes according to current automobile batteries state, line conditions
Reason selects optimum traffic route and optimal charge station, can save the time it is also possible to reduce charging expense.
Specific embodiment
Fig. 1 is charging station deployment scenarios figure around the road network of the present invention and road network:To geographical position by the way of grid
Information is defined, on grid, the scale of abscissa is defined as A, B, C ... J, K, L, and ordinate is defined as 1,2,3 ... 9,10,11,
For example:Respective coordinates are C11, K2 respectively in figure square position, are respectively used to represent automobile present position and purpose
Position, the circle position charging station to the path of destination for the corresponding driving respectively, its coordinate definition is H10, J6,
G8, I6, D10, J3, D9, F6, I3, E5, H3, C6, D4 and H2, charging station H10, J6 of wherein being defined by geographical position are located at
Article first, in planning driving path S1, planning driving path correspondence travels from automobile present position to the vehicle line of destination locations,
Charging station G8, I6 are located in Article 2 planning driving path S2, and charging station D10, J3 are located in Article 3 planning driving path S3, charging station
D9, F6 and I3 are located in Article 4 planning driving path S4, and charging station E5, H3 are located in Article 5 planning driving path S5 respectively, charging station
C6, D4 and H2 are located in Article 6 planning driving path S6 respectively.Combine the selection that planning driving path determines optimum charging station for convenience,
Charging station position mirror image can be represented on the line, for example, in figure charging station H10, J6 are respectively positioned on first roadway
On footpath, respectively charging station H10 is defined as 11, J6 according to the direction of traffic to destination and is defined as 12,1 representing at this charging station
In first planning driving path, 2 represent second charging station running on this line direction, in the same manner, positioned at Article 2 driving
Charging station G8, I6 on path are respectively defined as 21,22.Around above-mentioned road network and road network, charging station deployment scenarios figure is stored in and fills
In the identification module of power station, during for selecting optimum planning driving path, input computing unit, asking in order to optimization method as parameter
Solution, and calculate and select the charging station on optimum planning driving path and this path accordingly.
Fig. 2 is to communicate schematic diagram between electric automobile, charging communication network and charging station, and electric automobile utilizes its in-car path
Optimization system or special communication system by the battery capacity of electric automobile, current SOC and allow the basic ginseng such as charge power scope
To the communication network that charges, above-mentioned parameter information is forwarded to electric automobile charging station, charging station root to number information transmission by charging communication network
Determine whether to be that this charging electric vehicle, charge period, charge power and the univalent information of charging send to charging according to above- mentioned information
Communication network, charging communication network forwards this information to the electric automobile needing to charge again.Electric automobile, charging communication network and fill
Communicated using mobile radio communication system between power station.
Fig. 3 is optimum path search system layout in the electric automobile of the present invention, and optimum path search system 300 includes charging instruction
Input module 310, available path determining module 320, charged state module 330, charging station selects and path selection module 340 He
Display module 350.Wherein, charging instruction input module is used for obtaining electric automobile the need of the information charging, and this information can
Since from the charging instruction of user input it is also possible to the charging instruction being automatically generated, for example:When automobile internally-powered battery electric quantity
State automatically generates charging instruction to charging instruction input module when being less than certain threshold value.When charging instruction input module determines
When receiving charging instruction, user is pointed out to input destination geographical location information further, charging instruction input module 310 will afterwards
Destination geographical location information inputs to available path determining module 320, and charging instruction is inputted to charged state module 330.
Automobile current geographic position information and destination geographical location information are inputted its internal map by available path determining module 320
Information system, determines all feasible ride from current location to destination or path from cartographic information system.Work as road
When footpath is more, it can be screened, select preferably path relatively.For example:If current location is apart from destination
The distance of short path is S, and the path that path distance can be more than 1.5s is rejected, or ought according to history driver information system
The path that the front period easily blocks up is rejected.Available path determining module 320 is by the mulitpath information input after screening to charging
Stand and select and path selection module 340.After charged state module 330 receives charging instruction, battery is calculated according to battery status and works as
Front SOC state, and the time according to needed for this SOC calculates the power bracket needing to charge and charges, and by this information input
Select and path selection module 340 to charging station.Charging station selects and path selection module 340 receives available path determining module
The mulitpath information of 320 transmissions and the SOC of electric automobile internally-powered battery, the power bracket of the charging and charging required time
After information, send, to all charging stations on all feasible paths, unit price consulting of charging, and according to routing information, battery status
The optimum charging station that information and the univalent information that charges calculate and select on optimum charge path and this path, charging station selection and
Path selection module will determine multiple schemes, and these schemes can be that path is identical, but charging station difference or path
Difference, but the technical scheme that charging station is identical or charging station is all different from path.Will be corresponding for each scheme in multiple schemes
Charge station information on driving path and path sends to display module 350, by display module 350 by path and charging thereon
Station is shown, to facilitate driver to be selected or to confirm.Wherein also include communication system and control system on display module,
When travelling driving path and the charging station in scheme and scheme when driver certifying, the communication system on display module needs charging
Ask information to send to selected charging station, examine whether this charging station can meet charge requirement in charge period.This charging needs
Ask information can include the information such as battery SOC, charge power and charging interval simultaneously.When this charging station can be expired at the appointed time
During the charge requirement of sufficient electric automobile, display module receives the confirmation charge information of charging station, is prompted to driver afterwards, and
Charging station on driving path and path is shown to driver with cartographic information, to facilitate driver to try to locate by following up a clue.When this fills
When power station can not meet the charge requirement of electric automobile at the appointed time, charge requirement is believed by the communication system on display module
Whether breath sends to the selected charging station of another program, carry out examining by step before and can charge in this charging station, if
Can charge and then charge path and charging station be shown, if repeat the above steps can not be continued, until selecting suitable scheme.Fill
Power station selects and path selection module 340 can optimum scheme comparison as follows:1)Determine optimization aim:Drive to destination
Required driving time and on the way charging required time sum minimum;2)Determine optimization method:Tij=Si/Vi+Bij/
CVij, wherein, Tij represents and travels to target ground from current location, and j-th charging station on the i-th paths and the i-th paths
Charge, complete the time that above-mentioned task need to spend altogether, Si is the circuit distance of i-th driving path, Vi is for the i-th paths
The road speed that jam situation is estimated, Bij is travelled by the i-th paths for automobile to be needed to charge to j-th charging station moment automobile
Electricity, CVij is the charge rate that j-th charging station on the i-th paths can be provided by, and it is this electronic vapour with charging station
The charge power that car can be provided by is directly proportional, and Vi is the speed estimating out according to history driving recording, by available planning driving path
Corresponding Si, Vi, the Bij and CVij information of each available charging station bring above-mentioned formula respectively into calculate each charging station corresponding
Tij, selects minimum of a value Tijmin, Tijmin can be a numerical value can also be many numbers from multiple calculated Tij
Value, can all be set as Tijmin by the just calculated Tij less than certain time threshold value;3) by the row corresponding to Tijmin
Charging station j on bus or train route footpath i and this path is defined as optimum planning driving path and its corresponding charging station.
Charging station selects and path selection module 340 also can optimum scheme comparison as follows:1)Determine optimization aim:
The unit price that charges is minimum;2)Determine optimization method:Cij=Cj+Cj×(Sij-S0)/S0, wherein, Cij represents jth on the i-th paths
Charge after the conversion that individual charging station charges unit price, and the corresponding electric automobile of Cj travels to this j-th charging station along the i-th paths
Charge period charging station forecast unit price, Sij be select the i-th paths on j-th charging station as charging station after, automobile from
It travels to the operating range of destination with being currently located, and that is, the i-th paths travel to the distance of destination, and S0 represents current institute
Air line distance on ground distance objective ground;By each available charging station corresponding Cj, Sij of S0 and available planning driving path respectively
Bring above-mentioned formula into and calculate the corresponding Cij of each charging station, from multiple calculated Cij, select minimum of a value Cijmin,
Cijmin can be a numerical value can also be multiple numerical value, can the just calculated Cij less than certain threshold value be all provided with
It is set to Cijmin;3) by the charging station j in planning driving path i corresponding to Cijmin and this path be defined as optimum planning driving path and
Its corresponding charging station.
The invention is not restricted to the disclosed embodiments and accompanying drawing and fall into each of spirit and scope of the present invention it is intended to cover
Plant change and deform.