CN104175898A

CN104175898A - Method and system for providing charge service to electric vehicles

Info

Publication number: CN104175898A
Application number: CN201410407066.2A
Authority: CN
Inventors: 徐国卿; 袁登科; 刘峰; 王晶晶
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2014-08-18
Filing date: 2014-08-18
Publication date: 2014-12-03

Abstract

The invention provides a method and a system for providing charge service to electric vehicles. The method includes acquiring residual electric quantities of the electric vehicles; judging whether the residual electric quantities are lower than warning electric quantities or not; acquiring current locations of the electric vehicles when the residual electric quantities are lower than the warning electric quantities and marking the electric vehicles as target electric vehicles; determining a service vehicle for charging the electric vehicles as a charge service vehicle; planning charge routes for the target electric vehicles and planning service routes for the charge service vehicle. The system comprises the electric vehicles, the service vehicle and service stations for dispatching the service vehicle and charging the electric vehicles. The method and the system for providing the charge service to the electric vehicles have the advantages that the electric vehicles can be charged by the aid of the charge stations and also can be charged by the aid of the service vehicle, accordingly, a fixed charge mode can be combined with a mobile charge mode, the electric vehicle charging flexibility can be greatly improved, the endurance of the electric vehicles can be effectively enhanced, and the method and the system are favorable for popularizing and applying the electric vehicles to cities.

Description

Method for providing electricity supplementing service for electric vehicle and electricity supplementing service system

Technical Field

The invention belongs to the field of new energy vehicles, and relates to a method for providing power supplementing service for an electric vehicle and a power supplementing service system.

Background

At present, in order to respond to the national call for green energy use and energy conservation and emission reduction, electric vehicles are advocated to be used for travel in many cities, such as electric taxies, electric buses, personal electric cars, electric motorcycles, electric quadricycles for the old and the like, but the battery capacity of the electric vehicles is limited and the electric quantity cannot be supplemented in time, so the cruising ability of the electric vehicles is greatly limited, the daily travel requirement of a driver cannot be met, and the further popularization of the electric vehicles in the cities is also limited.

Disclosure of Invention

The first object of the invention is to provide a method for providing a power supplementing service for an electric vehicle.

The second purpose of the present invention is to provide an electric vehicle power supplementing service system capable of implementing the above method, which can provide power supplementing service for electric vehicles operating in cities in time.

In order to achieve the above purpose, the solution of the invention is as follows:

a method for providing power supplementing service for an electric vehicle comprises the following steps:

acquiring the residual electric quantity of the electric vehicle;

judging whether the residual electric quantity is lower than the warning electric quantity or not;

when the residual electric quantity is lower than the warning electric quantity, acquiring the current position of the electric vehicle and marking the electric vehicle as a target electric vehicle;

determining a service vehicle for supplying power to the electric vehicle as a power supply service vehicle;

and planning a power supply circuit line for the target electric vehicle and planning a service line for the power supply service vehicle.

The method for determining the power supply service vehicle comprises the following steps:

acquiring a driving range supported by the residual electric quantity and comparing the driving range with the service ranges of all service vehicles;

when the compared driving range is not intersected with the service ranges of all the service vehicles, the current positions of all the service vehicles are obtained, the distance between the current position of the target electric vehicle and the nearest road of the current positions of all the service vehicles is compared, and the service vehicle which is the smallest in distance between the current position of the target electric vehicle and the nearest road of the current position of the target electric vehicle is used as a power supply service vehicle;

when the comparative travel range is only intersected with the service range of one service vehicle, taking the service vehicle as a power supply service vehicle;

and when the comparison travel range is intersected with the service ranges of the plurality of service vehicles, continuously comparing the current position of the target electric vehicle with the distance between the current positions of the plurality of service vehicles and the nearest road, and taking the service vehicle with the smallest distance between the current position of the target electric vehicle and the nearest road as a power supplementing service vehicle.

The method for planning the circuit supplementing line and the service line comprises the following steps:

acquiring the current position of the electricity supplementing service vehicle;

acquiring a nearest road between the current position of the electricity supplementing service vehicle and the current position of the target electric vehicle;

acquiring an intersection point of the nearest road and the driving range and taking the intersection point as a power supplementing point;

and taking the part between the electricity supplementing service vehicle and the electricity supplementing point in the nearest road as a service route and taking the part between the target electric vehicle and the electricity supplementing point as an electricity supplementing circuit line.

The method for providing the power supplementing service for the electric vehicle further comprises the step of planning an alternative power supplementing circuit line for the target electric vehicle, and comprises the following steps:

acquiring the positions of all power supplementing stations;

comparing the driving range with the positions of all power supplementing stations and determining a target power supplementing station;

and taking the nearest road between the current position of the target electric vehicle and the position of the target power supplementing station as an alternative power supplementing circuit line.

The method for determining the target power supplementing station comprises the following steps:

when the position of only one power supply station is within the driving range, taking the power supply station as a target power supply station;

and when the positions of the plurality of power supplementing stations are within the driving range, comparing the current position of the target electric vehicle with the nearest road distances of the positions of the plurality of power supplementing stations, and taking the power supplementing station with the smallest nearest road distance to the current position of the target electric vehicle as the target power supplementing station.

An electric vehicle power supplementing service system, comprising: the system comprises at least one electric vehicle, at least one service vehicle and a service station for scheduling the service vehicle to charge the electric vehicle;

each electric vehicle at least comprises: the device comprises a battery pack, a battery pack electric quantity monitoring module, a judging module, an electric vehicle positioning module and an electric vehicle communication module. The battery pack electric quantity monitoring module, the judging module and the electric vehicle positioning module are in communication connection. The battery pack electric quantity monitoring module is used for monitoring the residual electric quantity of the battery pack, the judging module is used for judging whether the residual electric quantity of the battery pack is below the warning electric quantity or not, the electric vehicle positioning module is used for acquiring the current position of the electric vehicle, and the electric vehicle communication module is used for at least sending the residual electric quantity of the battery pack and the current position of the electric vehicle to the service station.

The service station comprises at least: the system comprises a service station communication module and a route planning module. The service station communication module at least receives the remaining capacity of the battery pack and the current location of the electric vehicle. The route planning module marks a certain electric vehicle as a target electric vehicle when receiving the current position of the electric vehicle, designates the certain service vehicle as an electricity supplementing service vehicle, and plans an electricity supplementing circuit line for the target electric vehicle and a service route for the electricity supplementing service vehicle. After the circuit supplementing line and the service route are planned, the service station communication module sends the circuit supplementing line to the target electric vehicle or sends the service route to the power supplementing service vehicle.

Each service vehicle at least comprises: the system comprises an energy storage battery, a service vehicle communication module and a service vehicle information informing module. The energy storage battery is used for rapidly charging the battery pack. The service vehicle communication module receives at least the service route. The service vehicle information informing module is used for informing a service route to a driver of the electricity supplementing service vehicle so as to enable the driver to drive along the service route.

The electric vehicle communication module in the target electric vehicle also receives a circuit supplementing line; the electric vehicle further comprises an electric vehicle information informing module for informing a driver of the target electric vehicle of at least the supplementary circuit line.

The service vehicle further comprises a service vehicle positioning module used for obtaining the current position of the service vehicle. The service vehicle communication module also sends the current position of the service vehicle to the service station, and when a certain electric vehicle is marked as a target electric vehicle, the route planning module compares the running range supported by the residual electric quantity of the target electric vehicle with the service ranges of all service vehicles;

when the compared traveling range is not intersected with the service ranges of all the service vehicles, continuously comparing the current position of the target electric vehicle with the nearest road distances of the current positions of all the service vehicles, and taking the service vehicle with the smallest nearest road distance to the current position of the target electric vehicle as a power supply service vehicle;

when the comparison travel range is intersected with the service ranges of the plurality of service vehicles, continuously comparing the current position of the target electric vehicle with the distance between the current positions of the plurality of service vehicles and the nearest road, and taking the service vehicle with the smallest distance between the current position of the target electric vehicle and the nearest road as a power supply service vehicle;

and the route planning module continues to take the intersection point of the nearest road between the current position of the electricity supplementing service vehicle and the current position of the target electric vehicle and the driving range as an electricity supplementing point, take the part between the electricity supplementing service vehicle and the electricity supplementing point in the nearest road as a service route and take the part between the target electric vehicle and the electricity supplementing point as an electricity supplementing circuit line.

The service cart further comprises a plurality of solar power generation panels for charging the energy storage battery by using solar energy, and a battery pack storage warehouse for detachably storing a plurality of battery packs.

The electric vehicle electricity supplementing service system further comprises a plurality of electricity supplementing stations fixed in position, wherein each electricity supplementing station comprises a battery rack for storing a plurality of battery packs and charging the battery packs and an electricity replacing robot for replacing the battery packs on the battery rack and a battery pack storage library or a battery pack in a target electric vehicle.

The power supplementing station further comprises a plurality of charging piles for charging the energy storage batteries in the service vehicle or the battery packs in the electric vehicle.

The power supply station further comprises a wind generating set or a solar generating set, and the wind generating set or the solar generating set is connected with the charging pile and the battery rack through power transmission lines.

The service station also comprises a storage module for storing the positions of all the power supplementing stations, and the storage module is in communication connection with the route planning module. When the circuit supplementing line and the service route are planned, the route planning module continues to appoint one circuit supplementing station as a target circuit supplementing station according to the positions of all the circuit supplementing stations stored in the storage module and plans an alternative circuit supplementing line for the target electric vehicle, the service station communication module sends the alternative circuit supplementing line to the target electric vehicle while sending the circuit supplementing line to the target electric vehicle, the electric vehicle communication module in the target electric vehicle also receives the alternative circuit supplementing line when receiving the circuit supplementing line, and the electric vehicle information informing module also informs the alternative circuit supplementing line to a driver of the target electric vehicle.

When the circuit supplementing line and the service route are planned, the route planning module continuously compares the driving range with the positions of all the power supplementing stations;

when the positions of the plurality of power supplementing stations are within the driving range, the distance between the current position of the target electric vehicle and the nearest road of the positions of the plurality of power supplementing stations is continuously compared, the power supplementing station with the minimum distance between the current position of the target electric vehicle and the nearest road of the current position of the target electric vehicle is used as the target power supplementing station, and the nearest road between the current position of the target electric vehicle and the position of the target power supplementing station is used as an alternative power supplementing circuit line by the route planning module.

Due to the adoption of the scheme, the invention has the beneficial effects that:

firstly, the route planning module of the service station can plan an optimal circuit supplementing line for the electric vehicle according to the current position of the electric vehicle to be supplemented and the residual electric quantity of a battery pack used by the electric vehicle, a driver does not need to check and repair the circuit line by himself, convenience is provided for the driver, and the service quality is improved.

Secondly, the electric vehicle electricity supplementing service system can not only adopt the electricity supplementing station to supplement electricity to the electric vehicle, but also adopt the service vehicle to supplement electricity to the electric vehicle, thereby combining the fixed electricity supplementing mode and the movable electricity supplementing mode, greatly improving the flexibility of the electric vehicle electricity supplementing, effectively improving the cruising ability of the electric vehicle, and being beneficial to promoting the popularization and application of the electric vehicle in the city.

Finally, the service station and the service vehicle can utilize clean energy such as wind energy or solar energy to generate electricity, so that the electricity consumption can be reduced, the dependence on an urban power grid is reduced, and the construction of a low-carbon city can be promoted.

Drawings

Fig. 1 is a block diagram of an electric vehicle power supplement service system according to a first embodiment of the present invention.

Fig. 2 is a block diagram of an electric vehicle according to a first embodiment of the present invention.

Fig. 3 is a block diagram of a service station according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram illustrating a first option of a charging service cart according to a first embodiment of the present invention.

Fig. 5 is a schematic diagram illustrating a second option of the charging service cart according to the first embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating a third alternative situation of the charging service cart according to the first embodiment of the present invention.

Fig. 7 is a schematic circuit trace diagram of a target electric vehicle according to a first embodiment of the invention.

Fig. 8 is a schematic view of a service cart according to a first embodiment of the present invention.

Fig. 9 is a block diagram of a service cart according to a first embodiment of the present invention.

Fig. 10 is a current compensation process diagram of an electric vehicle according to a first embodiment of the invention.

Fig. 11 is a block diagram of an electric vehicle power supplement service system according to a second embodiment of the present invention.

Fig. 12 is a schematic diagram of a power supply station in the second embodiment of the present invention.

Fig. 13 is a block diagram of a power supply station in the second embodiment of the present invention.

Fig. 14 is a schematic diagram of a first option of the power supplementing station in the second embodiment of the present invention.

Fig. 15 is a schematic diagram of a second option of the power supplementing station in the second embodiment of the present invention.

Fig. 16 is a current compensation process diagram of an electric vehicle according to a second embodiment of the present invention.

Fig. 17 is a flowchart of determining a complementary circuit line in the second embodiment of the present invention.

Fig. 18 is a flowchart of determining an alternative complementary circuit line in the second embodiment of the present invention.

Fig. 19 is a schematic diagram of a road selection list in the third embodiment of the present invention.

Reference numerals:

the electric vehicle electricity supplementing service system 1, the service subsystem 2, the service station 3, the electricity supplementing station 4, the service vehicle 5, the electric vehicle 6, the battery pack 7, the battery pack electricity quantity monitoring module 8, the electric vehicle positioning module 9, the electric vehicle communication module 10, the electric vehicle control module 11, the service station communication module 12, the judgment module 13, the route planning module 14, the electric vehicle information informing module 15, the service station control module 16, the service vehicle control module 17, the energy storage battery 18, the service vehicle communication module 19, the service vehicle information informing module 20, the service vehicle positioning module 21, the solar power generation panel 22, the battery pack storage library 23, the electricity supplementing station control module 24, the battery frame 25, the electricity changing robot 26, the charging pile 27, the wind power generator set 28, the solar power generator set 29, the power grid interface 30, the storage module 31, the service vehicle charging port 32, the electric vehicle charging port 33, the command input module 34, the electricity, The system comprises a charging room 35, a battery replacement room 36, a power supply station communication module 37, power supply equipment 38 and an electric vehicle power supply service system 39.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

Example one

The embodiment provides a method for providing power supplementing service for an electric vehicle, which can provide timely power supplementing service for the electric vehicle operated in a city, and comprises the following steps:

(1) acquiring the residual electric quantity of the electric vehicle;

(2) judging whether the residual electric quantity is lower than the warning electric quantity or not;

(3) when the residual electric quantity is lower than the warning electric quantity, the current position of the electric vehicle is obtained and the electric vehicle is marked as a target electric vehicle;

(4) determining a service vehicle for supplying power to the electric vehicle as a power supply service vehicle;

(5) and planning a circuit supplementing line for the target electric vehicle and planning a service line for the power supplementing service vehicle.

(1) acquiring a driving range supported by the residual electric quantity and comparing the driving range with the service ranges of all service vehicles;

(2) when the compared traveling range is not intersected with the service ranges of all the service vehicles, the current positions of all the service vehicles are obtained, the distance between the current position of the target electric vehicle and the nearest road of the current positions of all the service vehicles is compared, and the service vehicle which is the smallest in distance between the current position of the target electric vehicle and the nearest road of the current position of the target electric vehicle is used as a power supply service vehicle;

(3) when the comparative travel range is only intersected with the service range of one service vehicle, taking the service vehicle as a power supply service vehicle;

(4) and when the comparison travel range is intersected with the service ranges of the plurality of service vehicles, continuously comparing the current position of the target electric vehicle with the distance between the current positions of the plurality of service vehicles on the nearest roads, and taking the service vehicle with the smallest distance between the current position of the target electric vehicle and the nearest road as a power supplementing service vehicle.

The method for planning the circuit supplementing line and the service route comprises the following steps:

(1) acquiring the current position of the power supply service vehicle;

(2) acquiring a nearest road between the current position of the electricity supplementing service vehicle and the current position of the target electric vehicle;

(3) acquiring an intersection point of the nearest road and the driving range and taking the intersection point as a power supplementing point;

(4) and taking the part between the electricity supplementing service vehicle and the electricity supplementing point in the nearest road as a service route and taking the part between the target electric vehicle and the electricity supplementing point as an electricity supplementing circuit line.

(1) acquiring the positions of all power supply stations;

(2) comparing the driving range with the positions of all the power supply stations and determining a target power supply station;

(3) and taking the nearest road between the current position of the target electric vehicle and the position of the target power supplementing station as an alternative power supplementing circuit line.

(1) when the position of only one power supply station is within the driving range, the power supply station is taken as a target power supply station;

(2) and when the positions of the plurality of electricity supplementing stations are within the driving range, comparing the current position of the target electric vehicle with the nearest road distances of the positions of the plurality of electricity supplementing stations, and taking the electricity supplementing station with the smallest nearest road distance to the current position of the target electric vehicle as the target electricity supplementing station.

Example two

The embodiment provides an electric vehicle power supplementing service system capable of implementing the method mentioned in the first embodiment, and the method can automatically plan power supplementing lines for various types of electric vehicles operated in cities so as to enable the electric vehicles to supplement electric quantity in time and further expand the cruising ability of the electric vehicles. As shown in fig. 1, an electric vehicle recharging service system 1 includes a plurality of electric vehicles 6 in operation and a service subsystem 2 for providing a recharging (i.e., recharging) service to the electric vehicles 6.

As shown in fig. 2, each electric vehicle 6 includes a battery pack 7, a battery pack power monitoring module 8, an electric vehicle positioning module 9, an electric vehicle communication module 10, an electric vehicle information notification module 15, an electric vehicle control module 11, a determination module 13, a command input module 34, and other functional modules.

The electric vehicle control module 11 is used for controlling the operation of the battery pack electric quantity monitoring module 8, the electric vehicle positioning module 9, the electric vehicle communication module 10, the electric vehicle information informing module 15, the judging module 13, the command input module 34 and other functional modules according to certain instructions.

The electric vehicle communication module 10 is used for taking charge of information interaction between the functional modules and information interaction to the outside under the control of the electric vehicle control module 11.

The battery pack 7 is used for providing driving power for the electric vehicle 6. Different types of electric vehicles 6 may be provided with battery packs 7 having different battery capacities.

The battery pack power monitoring module 8 is used for monitoring the remaining power of the battery pack 7 in the running electric vehicle 6.

The judging module 13 is used for judging whether the current remaining power of the electric vehicle 6 is below the warning power. The warning power can be set to 5% -10% of the battery capacity of the battery pack 7 according to actual conditions. When the judging module 13 judges that the average value of the residual electric quantity counted in a period of time is below the warning electric quantity, a power shortage judging result indicating that the electric vehicle 6 needs to be supplemented with electric quantity is obtained, and the power shortage judging result is sent to the electric vehicle control module 11 through the electric vehicle communication module 10 and is also sent to the electric vehicle information informing module 15 through the electric vehicle communication module 10. The purpose of counting the residual electric quantity in a period of time is to prevent the occurrence of false alarm due to occasional electric quantity measurement errors, so that the false alarm rate is reduced, and the ordered and efficient operation of the whole electric vehicle power supplementing service system 1 is favorably maintained.

The electric vehicle positioning module 9 is used for acquiring the current position of the electric vehicle 6. When the electric vehicle control module 11 receives the power shortage judgment result, the electric vehicle positioning module 9 is controlled to obtain the current position of the electric vehicle 6, and the current position of the electric vehicle 6, the residual capacity of the battery pack 7 and the battery pack model are sent to the service subsystem 2 through the electric vehicle communication module 10, so that the service subsystem 2 plans a proper power supply circuit line for the electric vehicle 6 and selects a proper power supply service type.

The electric vehicle information notification module 15 is used for notifying the driver of the electric vehicle 6 that the remaining power of the battery pack 7 is insufficient and the power needs to be supplemented in time. When the electric vehicle information informing module 15 receives the power shortage judgment result, the driver can be informed of the information of insufficient electric quantity in various modes such as voice broadcasting, picture display, music playing or vibration, so as to know the electric quantity service condition of the battery pack 7.

The command input module 34 is used for allowing the driver of the electric vehicle 6 to input relevant commands according to the information notified by the electric vehicle information notification module 15.

As shown in fig. 1, the service subsystem 2 includes a plurality of mobile service vehicles 5 and a service station 3 for scheduling the service vehicles 5 to charge electric vehicles 6.

The service station 3 may be set up in the vicinity of a university or a research institute in a city in order to obtain technical support nearby. As shown in fig. 3, the service station 3 includes functional modules such as a service station communication module 12, a route planning module 14, a storage module 31, and a service station control module 16.

The service station control module 16 is used for controlling the operation of the service station communication module 12, the route planning module 14, the storage module 31 and other functional modules according to certain instructions.

The service station communication module 12 is configured to take charge of information interaction between the function modules and information interaction to the outside under the control of the service station control module 16. The service station communication module 12 can receive the remaining capacity and the current location of the built-in battery pack 7 transmitted from a certain electric vehicle 6 and transmit the remaining capacity and the current location to the route planning module 14.

The storage module 31 stores a map of a city in which the electric vehicle is located and service ranges of all service vehicles 5 in the city. The map contains information of all roads in the current city.

The route planning module 14 is configured to plan a power supply line for the electric vehicle to be charged and schedule a service vehicle 5 as a power supply service vehicle to provide power supply service for the electric vehicle. Specifically, after the route planning module 14 receives the current location of a certain electric vehicle 6, the electric vehicle 6 is marked as a target electric vehicle, the service ranges of all the service vehicles 5 and the map of the city where the target electric vehicle is located are read from the storage module 31, the travel range supported by the remaining power of the target electric vehicle is estimated according to the current location of the target electric vehicle, then the travel range is compared with the service ranges of all the service vehicles 5 to obtain different comparison results, and the electricity-supplementing service vehicle is determined according to the comparison results. The determination process of the electricity supplementing service vehicle is as follows:

as shown in fig. 4, the dashed line indicates the service range of each service car 5, and ∈ indicates each service car 5 (e.g., a)₁、A₂And A₃) The good represents the current position of the target electric vehicle (e.g., T), and the dash-dot line represents the running range supported by the remaining amount of power of the target electric vehicle. When the comparison travel range is not intersected with the service ranges of all the service vehicles 5, the route planning module 14 continues to compare the current position of the target electric vehicle with the distance between the nearest roads of the current positions of all the service vehicles, compares the service vehicle with the shortest distance between the nearest roads of the current position of the target electric vehicle and the current position of the target electric vehicle, and takes the service vehicle as a power supply service vehicle. The route planning module 14 only compares the nearest road distance between the current position of the service vehicle and the current position of the target electric vehicle, and then selects the service vehicle with the smallest nearest road distance instead of comparing the straight-line distance between the current position of the service vehicle and the current position of the target electric vehicle, so that the factor of the running time of the target electric vehicle is fully considered, the target electric vehicle can run for a shorter distance before power supplement, and the time cost of a driver is saved. The nearest road between the current position of the target electric vehicle and the current position of any service vehicle is determined as follows: for example, in FIG. 4, service cart A₃When two roads reach the target electric vehicle T, the route planning module 14 compares the road lengths of the two roads, and takes the road with the smallest road length as the nearest road. The length of the nearest road is the nearest road distance.

As shown in fig. 5, when the travel range is compared to intersect with the service range of only one service vehicle, the route planning module 14 directly takes the service vehicle as the electricity supplementing service vehicle. For example, in fig. 5, the traveling range of the target electric vehicle is only associated with the service vehicle a₂So that the route planning module 14 directly connects the service vehicles a₂As a service vehicle for power supply, the distance between other service vehicles and the target electric vehicle is not compared, even if the service vehicle A₁Closer to the target electric vehicle. This is because each service vehicle has a predetermined service range and is out of range for emergencyThe service of the electric vehicle out of the service range of the electric vehicle inevitably affects the service quality of other electric vehicles.

As shown in fig. 6, when the comparative travel range intersects (i.e. partially overlaps) the service ranges of the plurality of service vehicles 5, the route planning module 14 continues to compare the current position of the target electric vehicle with the distance between the current positions of the plurality of service vehicles that intersect, and takes the service vehicle with the smallest distance between the current position of the target electric vehicle and the closest road as the electricity-supplementing service vehicle. For example, in FIG. 6, because service cart A₁The shortest road distance between the target electric vehicle is the smallest, so the service vehicle A₁As a service vehicle for supplementing electricity.

After the route planning module 14 determines the electricity supplementing service vehicle for the target electric vehicle, the electricity supplementing circuit line is continuously determined for the target electric vehicle. As shown in fig. 7, the route planning module 14 continues to use the intersection point of the nearest road between the current position of the electricity compensation service vehicle and the current position of the target electric vehicle and the driving range as the electricity compensation point S, and use the part of the nearest road between the electricity compensation service vehicle and the electricity compensation point S as the service route L₁And the part between the target electric vehicle and the electricity supplementing point S in the nearest road is taken as an electricity supplementing circuit line L₂. Then, the service station control module 16 controls the service station communication module 12 to add the circuit line L₂And sending the information to the target electric vehicle. The electric vehicle information notification module 15 notifies the driver of the supplementary circuit line and allows the driver to decide whether or not to adopt the supplementary circuit line. When a driver of the target electric vehicle adopts the electricity supplementing line, the confirmation information is input through the command input module 34, the electric vehicle communication module 10 sends the confirmation information to the service station 3, the service station communication module 12 sends the service route to the service vehicle 5 after receiving the confirmation information, the driver of the service vehicle 5 drives to an electricity supplementing point along the service route after seeing the service route, and electricity is supplemented for the target electric vehicle at the electricity supplementing point.

As shown in fig. 8 and 9, the service cart 5 includes a service cart control module 17, an energy storage battery 18, a service cart communication module 19, a service cart information notification module 20, a service cart positioning module 21, a solar power generation panel 22, a battery replacement robot 26, and a battery pack storage 23.

The service vehicle control module 17 is used for controlling the operation of the functional modules such as the energy storage battery 18, the service vehicle communication module 19, the service vehicle information notification module 20 and the service vehicle positioning module 21 according to certain instructions.

The service vehicle communication module 19 is used for taking charge of information interaction between the function modules and information interaction to the outside under the control of the service vehicle control module 17.

The energy storage battery 18 not only provides driving power for the service vehicle 5 itself, but also rapidly charges the battery packs of various target electric vehicles through the electric vehicle charging ports 33 provided at both sides of the service vehicle 5. When the energy storage battery 18 is short of its own charge, it can also be charged through a service vehicle charging port 32 provided at the rear of the vehicle compartment.

The solar power generation panels 2 are arranged on the top of the service trolley 5, and can utilize solar energy to charge the energy storage batteries 18 in the daytime so as to utilize the solar energy to the maximum extent.

The battery pack storage 23 detachably stores a plurality of different types of battery packs. The types of these battery packs are consistent with the types of battery packs used in commercially available electric vehicles 6.

The battery replacement robot 26 is configured to replace the battery pack of the target electric vehicle with a battery pack of the same type stored in the battery pack storage 23.

The service vehicle positioning module 21 is configured to obtain the current position of the service vehicle 5 in real time, and send the current position to the service station 3 through the service vehicle communication module 19.

The service vehicle information notifying module 20 is configured to notify a driver of the service vehicle 5 of information such as a service route. When the service vehicle communication module 19 receives the service route from the service station 3, the service vehicle information notification module 20 notifies the driver of the service vehicle 5 of the service route, and the driver of the service vehicle 5 drives along the service route to the power compensation point after seeing the service route. And selecting a proper charging interface for the target electric vehicle or replacing a corresponding battery pack at the power supplementing point according to the received battery pack model.

As shown in fig. 10, the flow of compensating the power of a certain electric vehicle 6 in operation by using the electric vehicle power compensation service system 1 is as follows:

step 1-1:

in the running process of the electric vehicle 6, the electric vehicle control module 11 controls the battery pack electric quantity monitoring module 8 to monitor the residual electric quantity of the battery pack 7, sends a monitoring result (namely the value of the residual electric quantity) to the judging module 13 through the electric vehicle communication module 10, and then enters the step 1-2.

Step 1-2:

the judging module 13 judges whether the counted remaining electric quantity is below the warning electric quantity within a period of time, and when the counted remaining electric quantity is below the warning electric quantity, the remaining electric quantity of the electric vehicle 6 is really insufficient, and the battery pack needs to be charged or replaced, and then the step 1-3 is carried out; otherwise, returning to the step 1-1.

Step 1-3:

the judging module 13 obtains a power shortage judging result, sends the power shortage judging result to the electric vehicle control module 11 through the electric vehicle communication module 10, and then enters the step 1-4.

Step 1-4:

after receiving the power shortage judgment result, the electric vehicle control module 11 controls the electric vehicle positioning module 9 to acquire the current position of the electric vehicle 6, and sends the current position, the remaining capacity of the battery pack and the model of the battery pack to the service subsystem 2 through the electric vehicle communication module 10, and controls the electric vehicle information informing module 15 to inform a driver of the electric vehicle 6 that the remaining capacity of the current battery pack 7 is insufficient, so that the driver can know the capacity usage condition of the battery pack 7, and then the steps 1-5 are carried out.

Step 1-5:

the service station communication module 12 receives the current position, the remaining capacity and the battery pack model number transmitted by a certain electric vehicle 6 and transmits the information to the route planning module 14, and then the steps 1 to 6 are carried out.

Step 1-6:

the route planning module 14 marks the electric vehicle 6 as a target electric vehicle, reads the service ranges of all the service vehicles 5 from the storage module 31, estimates the driving range supported by the remaining electric quantity of the target electric vehicle, and then compares the driving range with the service ranges of all the service vehicles 5; when the comparative traveling range is not intersected with the service ranges of all the service vehicles 5, the step 1-7 is carried out; when the comparative travel range is only intersected with the service range of one service vehicle 5, entering the step 1-8; when the comparison travel range intersects the service ranges of the plurality of service vehicles 5, the process proceeds to steps 1 to 9.

Step 1-7:

the route planning module 14 continuously compares the current position of the target electric vehicle with the distance between the current positions of all the service vehicles 5 on the nearest roads, compares the service vehicle with the minimum distance between the current position of the target electric vehicle and the nearest road, takes the service vehicle as a power supply service vehicle, and then enters the step 1-10.

Step 1-8:

the route planning module 14 directly takes the service vehicle as a power supply service vehicle and then proceeds to steps 1-10.

Step 1-9:

the route planning module 14 continuously compares the current position of the target electric vehicle with the distance between the target electric vehicle and the nearest road of the current positions of the plurality of service vehicles, compares the service vehicle with the smallest distance between the target electric vehicle and the nearest road of the current position of the target electric vehicle, takes the service vehicle as a power supply service vehicle, and then enters the step 1-10.

Step 1-10:

the route planning module 14 will determine the maximum distance between the current position of the electricity supplementing service vehicle and the current position of the target electric vehicleThe intersection point of the driving range supported by the residual electric quantity of the near road and the target electric vehicle is used as a power supplementing point S, and the part between the current position of the power supplementing service vehicle and the power supplementing point S in the near road is used as a service route L₁Taking the part between the current position of the target electric vehicle and the power supplementing point S in the nearest road as a power supplementing circuit line L₂The service station control module 16 controls the service station communication module 12 to supplement the circuit line L₂Sending to the target electric vehicle, and then entering the step 1-11.

Step 1-11:

the electric vehicle communication module 10 receives the supplementary circuit line L sent by the service station 3₂The electric vehicle information informing module 15 informs the driver of the supplementary circuit line and makes the driver decide whether to adopt the supplementary circuit line, and when the driver decides to adopt the supplementary circuit line, the steps 1 to 12 are carried out.

Step 1-12:

the driver inputs the confirmation information through the command input module 34, and the electric vehicle control module 11 transmits the confirmation information to the service station 3 through the electric vehicle communication module 10, and then proceeds to steps 1 to 13.

Step 1-13:

after receiving the confirmation information, the service station communication module 12 sends the service route to the service vehicle 5 under the control of the service station control module 16, the service vehicle communication module 19 receives the service route, the service vehicle control module 17 informs the service route to a driver of the service vehicle 5 through the service vehicle information informing module 20, the service vehicle 5 provides a battery pack replacement and charging service for the target electric vehicle at a power supplementing point, and the process is declared to be finished for a certain route planning.

And if the service station 3 receives the current positions of the plurality of electric vehicles, the residual electric quantity and the model information of the battery packs within a period of time, sequentially carrying out the processing on each electric vehicle according to the sequence of the receiving time.

EXAMPLE III

The electric vehicle power supplementing service system in the second embodiment adopts the movable power supplementing vehicle to supplement power for the electric vehicle to be charged, and actually, the electric vehicle power supplementing service system can also set a power supplementing station in a region with higher use frequency of the electric vehicle, so that the electric vehicle to be charged can enter the station to enjoy power supplementing service, and a fixed power supplementing mode and a movable power supplementing mode are combined. In the third embodiment, the same functional blocks as those in the second embodiment are given the same names, and the same description is omitted.

As shown in fig. 11, the electric vehicle electricity supplementing service system 39 in the present embodiment includes a plurality of electricity supplementing stations 4 in addition to the configuration of the second embodiment.

The power supply station 4 is generally set up at a scenic spot or a traffic junction where traffic flows are dense. As shown in fig. 12 and 13, the electricity supplementing station 4 includes a charging room 35, an electricity replacement room 36, a power supply device 38, an electricity supplementing station communication module 37, and an electricity supplementing station control module 24.

A plurality of charging piles 27 are provided in the charging chamber 35. Each fills and all is equipped with the interface that charges of different grade type on the electric pile 27. Through these charging interfaces, the charging post 27 can charge the energy storage battery used by the service vehicle 5 and the battery pack 7 used by the electric vehicle.

A plurality of battery racks 25 are disposed in the battery changing chamber 36. Various types of battery packs 7 are placed on the battery holder 25. Different types of charging interfaces are also arranged on the battery rack 25. These charging interfaces enable the battery pack 7 or the energy storage battery 18 to be charged by slow charging. The service trolley 5 returns to the power supplementing station 4 at night (21: 00-6: 00), and the carried battery pack and the energy storage battery 18 are fully charged in a slow charging mode.

The battery replacement robot 26 is used to replace a battery pack with a full charge in the battery rack 25 with a battery pack storage 23 of the service cart 5 or a battery pack with a low charge in the target electric vehicle.

The power supply device 38 is used to supply power to the charging post 27 and the battery rack 25, and includes the wind turbine generator set 28, the solar turbine generator set 29, and the grid interface 30. The wind turbine generator system 28, the solar turbine generator system 29 and the grid interface 30 are connected to the charging pile 27 and the battery rack 25 via power lines. In this way, the power supply device 38 can utilize wind energy, solar energy and urban power grid to supply power in a hybrid manner, and therefore sufficient power supply of the power supply station is effectively guaranteed. The wind energy and the solar energy are utilized to supplement the electricity, and the power grid is utilized to supplement the electricity when the electric quantity of the renewable energy is insufficient.

The power supply station communication module 37 is used for taking charge of information interaction between the functional modules and information interaction to the outside under the control of the power supply station control module 24.

As shown in fig. 12, the storage module 31 of the service station 3 in the third embodiment also stores the positions of all the power replenishment stations, compared to the second embodiment.

Compared with the second embodiment, the route planning module 14 may also plan an alternative power supply circuit line for the target electric vehicle, so that the target electric vehicle finds the corresponding power supply station according to the alternative power supply circuit line. Specifically, in this embodiment, after the route planning module 14 finishes planning the electricity supplementing route and the service route, the positions of all the electricity supplementing stations and the map of the city where the target electric vehicle is located are read from the storage module 31, the driving range supported by the remaining power of the target electric vehicle is estimated according to the current position of the target electric vehicle, the driving range is compared with the positions of all the electricity supplementing stations to obtain different comparison results, and the target electricity supplementing station is determined according to the comparison results. The determination process of the target power supplementing station is as follows:

when the position of none of the power supply stations is within the driving range, the route planning module 14 does not determine the target power supply station and does not plan the alternative power supply circuit line.

As shown in fig. 14, the position of the power supplement station 4, the current position of the target electric vehicle (e.g., T), and the driving range supported by the remaining amount of power of the target electric vehicle are shown by dotted lines. When the position of only one power supply station is within the driving range, taking the power supply station as a target power supply station;

as shown in fig. 15, when the positions where the plurality of power replenishment stations are compared fall within the driving range, the current position of the target electric vehicle is continuously compared with the nearest road distances of the plurality of power replenishment station positions, and the power replenishment station with the smallest nearest road distance to the current position of the target electric vehicle is used as the target power replenishment station. The method for determining the nearest road distance is the same as that in the first embodiment.

And when the route planning module 14 determines the target power supplementing station, taking the nearest road between the current position of the target electric vehicle and the position of the target power supplementing station as an alternative power supplementing circuit line. Then, the service station control module 16 controls the service station communication module 12 to simultaneously transmit the supplementary circuit line and the alternative supplementary circuit line to the target electric vehicle. The electric vehicle information informing module 15 informs the driver of the supplementary circuit line and the alternative supplementary circuit line, so that the driver can decide whether to adopt the supplementary circuit line or the alternative supplementary circuit line or not, or neither. When a driver of the target electric vehicle adopts the electricity supplementing line, the first confirmation information is input through the command input module 34, the electric vehicle communication module 10 sends the first confirmation information to the service station 3, the service station communication module 12 sends the service route to the service vehicle 5 after receiving the first confirmation information, the driver of the service vehicle 5 drives to an electricity supplementing point along the service route after seeing the service route, and electricity is supplemented for the target electric vehicle at the electricity supplementing point. When a driver of the target electric vehicle adopts the alternative power supply circuit line, second confirmation information is input through the command input module 34, the electric vehicle communication module 10 sends the second confirmation information to the service station 3, the service station communication module 12 sends the battery pack model power supply station communication module 37 of the target electric vehicle to the target power supply station after receiving the second confirmation information, and the target power supply station distributes a power supply mode and a power supply position for the target electric vehicle according to the battery pack model received by the power supply station communication module 37.

As shown in fig. 16, the flow of compensating the power of a certain electric vehicle 6 in operation by using the electric vehicle power compensation service system 39 is as follows:

step 2-1:

in the running process of the electric vehicle 6, the electric vehicle control module 11 controls the battery pack electric quantity monitoring module 8 to monitor the residual electric quantity of the battery pack 7, sends a monitoring result (namely the value of the residual electric quantity) to the judging module 13 through the electric vehicle communication module 10, and then enters the step 2-2.

Step 2-2:

the judging module 13 judges whether the counted remaining electric quantity is below the warning electric quantity within a period of time, and when the counted remaining electric quantity is below the warning electric quantity, the remaining electric quantity of the electric vehicle 6 is really insufficient, and charging or battery pack replacement is needed, and then the step 2-3 is performed; otherwise, returning to the step 2-1.

Step 2-3:

the judging module 13 obtains a power shortage judging result, sends the power shortage judging result to the electric vehicle control module 11 through the electric vehicle communication module 10, and then enters the step 2-4.

Step 2-4:

after receiving the power shortage judgment result, the electric vehicle control module 11 controls the electric vehicle positioning module 9 to acquire the current position of the electric vehicle 6, and sends the current position, the remaining capacity of the battery pack and the model of the battery pack to the service subsystem 2 through the electric vehicle communication module 10, and controls the electric vehicle information informing module 15 to inform a driver of the electric vehicle 6 that the remaining capacity of the current battery pack 7 is insufficient, so that the driver can know the capacity usage condition of the battery pack 7, and then the step 2-5 is carried out.

Step 2-5:

the service station communication module 12 receives the current position, the remaining capacity and the model number sent by a certain electric vehicle 6, sends the information to the route planning module 14, and then enters the steps 2-6.

Step 2-6:

the route planning module 14 marks the electric vehicle 6 as the target electric vehicle and then proceeds to steps 2-7.

Step 2-7:

the route planning module 14 determines the electricity supplementing service vehicle and the target electric vehicle, determines a service route and an electricity supplementing circuit line, and then enters the step 2-8.

Step 2-8:

and the route planning module 14 determines a target power supply station and an alternative power supply circuit line, and then the step 2-9 is carried out.

Step 2-9:

and the service station control module 16 controls the service station communication module 12 to simultaneously send the circuit supplementing circuit lines and the alternative circuit supplementing circuit lines to the target electric vehicle, and then the step 2-10 is carried out.

Step 2-10:

the electric vehicle information informing module 15 informs a driver of the supplementary circuit line and the alternative supplementary circuit line, so that the driver can decide whether to adopt the supplementary circuit line or the alternative supplementary circuit line or not; when a driver adopts a circuit supplementing line, entering the step 2-11; and (5) when the driver adopts the alternative circuit supplementing line, entering the step 2-13.

Step 2-11:

the driver of the target electric vehicle inputs the first confirmation information through the command input module 34, and the electric vehicle control module 11 transmits the first confirmation information to the service station 3 through the electric vehicle communication module 10, and then proceeds to steps 2-12.

Step 2-12:

after receiving the first confirmation information, the service station communication module 12 sends the service route to the service vehicle 5 under the control of the service station control module 16, the service vehicle communication module 19 receives the service route, the service vehicle control module 17 informs the service route to the driver of the service vehicle 5 through the service vehicle information informing module 20, the service vehicle 5 provides the battery pack replacement and charging service for the target electric vehicle at the power supplementing point, and then the route planning process is ended.

Step 2-13:

the driver of the target electric vehicle inputs the second confirmation information through the command input module 34, transmits the second confirmation information to the service station 3 by the electric vehicle communication module 10, and then proceeds to steps 2-14.

Step 2-14:

and after receiving the second confirmation information, the service station communication module 12 sends the battery pack model of the target electric vehicle to the target power supplementing station, and the target power supplementing station allocates a power supplementing mode and a power supplementing position to the target electric vehicle according to the battery pack model and then finishes the route planning process.

As shown in fig. 17, in step 2-7, the service route and the complementary circuit route are determined in detail as follows:

step 3-1:

the route planning module 14 reads the service ranges of all the service vehicles 5 from the storage module 31, estimates the driving range supported by the remaining electric quantity of the target electric vehicle, and then compares the driving range with the service ranges of all the service vehicles 5; when the comparative traveling range is not intersected with the service ranges of all the service vehicles 5, the step 3-2 is carried out; when the comparative travel range is only intersected with the service range of one service vehicle 5, entering the step 3-3; and when the comparison travel range intersects with the service ranges of the plurality of service vehicles 5, entering the step 3-4.

Step 3-2:

the route planning module 14 continuously compares the current position of the target electric vehicle with the distance between the current positions of all the service vehicles 5 and the nearest road, compares the service vehicle with the smallest distance between the current position of the target electric vehicle and the nearest road, takes the service vehicle as a power supply service vehicle, and then proceeds to step 3-5.

Step 3-3:

the route planning module 14 directly takes the service vehicle as a power supply service vehicle, and then proceeds to step 3-5.

Step 3-4:

the route planning module 14 continuously compares the current position of the target electric vehicle with the distance between the target electric vehicle and the nearest road of the current positions of the plurality of service vehicles, compares the service vehicle with the smallest distance between the target electric vehicle and the nearest road of the current position of the target electric vehicle, takes the service vehicle as a power supply service vehicle, and then enters step 3-5.

Step 3-5:

the route planning module 14 takes the intersection point of the nearest road between the current position of the electricity supplementing service vehicle and the current position of the target electric vehicle and the driving range supported by the residual electric quantity of the target electric vehicle as an electricity supplementing point, takes the road between the current position of the electricity supplementing service vehicle and the electricity supplementing point S as a service route, takes the road between the current position of the target electric vehicle and the electricity supplementing point S as an electricity supplementing circuit line, and then the steps 2 to 7 are finished.

As shown in fig. 18, in step 2-8, the determination of the alternative repair circuit line is detailed as follows:

step 4-1:

the route planning module 14 reads the positions of all the power supplementing stations and the map of the city where the target electric vehicle is located from the storage module 31, estimates the driving range supported by the residual electric quantity of the target electric vehicle according to the current position of the target electric vehicle, and then compares the driving range with the positions of all the power supplementing stations; when the position of no power supply station is within the driving range, the route planning module 14 does not determine the target power supply station and does not plan the alternative power supply circuit line, and the planning process for the alternative power supply circuit line is finished; when the position of only one power supply station is within the driving range, entering the step 4-2; and 4-3, when the positions of the plurality of power supplementing stations are compared to be within the driving range, entering the step.

Step 4-2:

the route planning module 14 takes the power replenishment station as a target power replenishment station, and then proceeds to step 4-4.

Step 4-3:

the route planning module 14 continuously compares the current position of the target electric vehicle with the nearest road distances of the plurality of power supplementing stations, takes the power supplementing station with the smallest nearest road distance to the current position of the target electric vehicle as the target power supplementing station, and then proceeds to step 4-4.

Step 4-4:

and (4) the route planning module 14 takes the nearest road between the current position of the target electric vehicle and the position of the target power supplementing station as an alternative power supplementing circuit line, and the step 2-8 is ended.

Example four

The second embodiment and the third embodiment are both performed by comparing the road with the smallest road length among all roads between two points and automatically taking the road as the nearest road. However, in actual circumstances, it is not sufficient to consider only the road length, but also a road congestion caused by construction and traffic control, or even if the road length is short, it may take a long time to supplement power. At the moment, a driver needs to select a proper road by himself, namely, the roads between the position of each power supplementing station and the current position of the target electric vehicle are arranged from small to large according to the length of the roads to generate a road selection list, and then the driver selects the expected road, so that the humanization can be embodied, the blocked road can be removed, and the power supplementing efficiency is improved better. As shown in fig. 19, the target electric vehicle T and the electricity replenishment station a₅There are two roads C between₁And C₂And a power supply station A₄Three roads C between₃、C₄And C₅Then, the alternative complementary circuit line in the third embodiment may be determined according to the following steps:

step 5-1:

the route planning module 14 compares the road lengths of five roads between the target electric vehicle T and the two power supplementing stations, arranges the road lengths from small to large into a road selection list, and the service station control module 16 controls the service station communication module 12 to send the road selection list to the target electric vehicle, and then the step 5-2 is performed.

Step 5-2:

the electric vehicle communication module 10 receives the road selection list sent by the service station 3, and the electric vehicle information notification module 15 notifies the driver of the road selection list and allows the driver to select a road, and then the process goes to step 5-3.

Step 5-3:

the driver inputs a road through the command input module 34, transmits the road information to the service station 3 by the electric vehicle communication module 10, and then proceeds to step 5-4.

Step 5-4:

the service station communication module 12 receives the road information and sends the road information to the route planning module 14, and the route planning module 14 confirms the power supplementing station located at the end point of the road as the target power supplementing station and confirms the road as the alternative power supplementing circuit line until the selection process of the alternative power supplementing circuit line is finished.

Likewise, the service route and the charging route may be selected by the driver in the above manner.

The electric vehicle power supplementing service system is suitable for popularization and use in southern coastal cities, and because wind energy and solar energy of many southern coastal cities (such as Shenzhen, Hainan, mansion and the like) are abundant, the renewable energy sources are very suitable for being used in electric vehicle charging or battery replacement, so that the popularization of electric vehicles is facilitated, and the aim of constructing low-carbon cities is really achieved.

EXAMPLE five

Compared with the third embodiment and the fourth embodiment, the complementary circuit lines and the alternative complementary circuit lines can be interchanged, that is, in this embodiment, the complementary circuit line in the second embodiment is used as the alternative complementary circuit line in this embodiment, and the alternative complementary circuit line in the third embodiment is used as the complementary circuit line in this embodiment, so that the purpose of this arrangement is as follows: the service vehicle is dispatched to answer the power supply when the residual electric quantity of the electric vehicle is not enough to support the electric vehicle to run to the power supply station, so that the running quantity and the dispatching pressure of the service vehicle can be effectively reduced, and the overall running cost of the power supply service system of the electric vehicle is saved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. A method for providing power supplementing service for an electric vehicle is characterized in that: the method comprises the following steps:

acquiring the residual electric quantity of the electric vehicle;

judging whether the residual electric quantity is lower than a warning electric quantity or not;

2. The method of claim 1, wherein: the method for determining the power supply service vehicle comprises the following steps:

when the driving range is not intersected with the service ranges of all the service vehicles, the current positions of all the service vehicles are obtained, the distance between the current position of the target electric vehicle and the nearest road of the current positions of all the service vehicles is compared, and the service vehicle with the smallest distance between the current position of the target electric vehicle and the nearest road of the current position of the target electric vehicle is used as the electricity supplementing service vehicle;

when the running range is compared to be only intersected with the service range of one service vehicle, taking the service vehicle as the power supply service vehicle;

and when the running range is intersected with the service ranges of a plurality of service vehicles, comparing the distance between the current position of the target electric vehicle and the nearest road of the current positions of the plurality of service vehicles, and taking the service vehicle with the smallest distance between the current position of the target electric vehicle and the nearest road as the electricity supplementing service vehicle.

3. The method of claim 1, wherein:

and taking the part of the nearest road between the electricity supplementing service vehicle and the electricity supplementing point as the service route and taking the part of the nearest road between the target electric vehicle and the electricity supplementing point as the electricity supplementing circuit line.

4. The method of claim 2, wherein: the method also comprises the step of continuing to plan alternative circuit supplementing lines for the target electric vehicle after the circuit supplementing lines are planned for the target electric vehicle, and the method comprises the following steps:

acquiring the positions of all power supplementing stations;

comparing the driving range with the positions of all the power supplementing stations and determining a target power supplementing station;

and taking the nearest road between the current position of the target electric vehicle and the position of the target power supplementing station as the alternative power supplementing circuit line.

5. The method of claim 4, wherein: the method for determining the target power supplementing station comprises the following steps:

when the position of only one power supply station is within the driving range, taking the power supply station as the target power supply station;

and when the positions of the plurality of power supplementing stations are within the driving range, comparing the distance between the current position of the target electric vehicle and the nearest road of the positions of the plurality of power supplementing stations, and taking the power supplementing station with the smallest distance between the current position of the target electric vehicle and the nearest road as the target power supplementing station.

6. An electric vehicle service system for supplementing electricity to implement the method according to any one of claims 1 to 5, comprising: the system comprises at least one electric vehicle, at least one service vehicle and a service station for dispatching the service vehicle to supplement power for the electric vehicle;

the electric vehicle includes: the electric vehicle positioning system comprises a battery pack, a battery pack electric quantity monitoring module for monitoring the residual electric quantity of the battery pack, a judging module for judging whether the residual electric quantity of the battery pack is lower than the warning electric quantity or not and an electric vehicle positioning module for acquiring the current position of the electric vehicle; the battery pack electric quantity monitoring module, the judging module and the electric vehicle positioning module are in communication connection;

the service station includes: the route planning module is used for planning a circuit supplementing line and a service line;

the service cart includes: the service vehicle information informing module is used for informing a driver of a service vehicle of the service route;

the electric vehicle further comprises an electric vehicle information informing module for informing a driver of the electric vehicle of at least the supplementary circuit line.

7. The electric vehicle power supplementing service system according to claim 6, wherein: the service vehicle further comprises a service vehicle positioning module used for obtaining the current position of the service vehicle.

8. The electric vehicle power supplementing service system according to claim 6, wherein: the service trolley also comprises a plurality of solar power generation boards for charging the energy storage batteries by utilizing solar energy and a battery pack storage warehouse for storing a plurality of battery packs; or,

the electric vehicle electricity supplementing service system further comprises a plurality of electricity supplementing stations with fixed positions, wherein each electricity supplementing station comprises a battery rack for storing a plurality of battery packs and charging the battery packs and an electricity replacing robot for replacing the battery packs on the battery rack and the battery pack storage warehouse or the battery packs in the target electric vehicle.

9. The electric vehicle power supplementing service system according to claim 8, wherein: the power supplementing station also comprises a plurality of charging piles for charging the energy storage batteries in the service vehicle or the battery packs in the electric vehicle; or,

the power supplementing station further comprises a wind generating set or a solar generating set, and the wind generating set or the solar generating set is connected with the charging pile and the battery rack through power transmission lines.

10. The electric vehicle power supplementing service system according to claim 8, wherein: the service station also comprises a storage module which stores the positions of all the power supplementing stations, and the storage module is in communication connection with the route planning module.