JP2013104680A - Charging stand display system and charging stand display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relatively easily derive and display a charging stand at which an electric transport device can arrive with a current residual amount of a battery.SOLUTION: When accepting a transmission request of display information from a display terminal, a management server: acquires a predetermined position and a residual amount of a battery of a predetermined electric transport machine; acquires travel history data corresponding to the predetermined position of the predetermined electric transport machine from a data management section; generates display information on the basis of the travel history data corresponding to the predetermined position of the predetermined electric transport machine, the residual amount of the battery of the predetermined electric transport machine and charging stand position information for managing positions of a plurality of charging stands; and transmits it to a display terminal. The display terminal controls a display mode of the charging stands in multiple levels according to a level of the amount of power required for the arrival.

Description

  The present invention relates to a charging stand display system and a charging stand display method.

  In recent years, various automobile manufacturers have been actively developing electric vehicles against the background of increasing environmental awareness. Unlike conventional gasoline vehicles, electric vehicles do not use fossil fuels, and can run using electricity that emits less carbon dioxide during power generation, such as nuclear power generation and solar power generation.

  However, compared with gasoline cars, electric vehicles have a problem that the distance that can be traveled by one charge (the cruising range) is short, and at the present time, the rate of popularization of charging stations is low. Therefore, the user of the electric vehicle needs to travel while paying attention to the remaining amount of the battery and the position of the charging stand, which is less convenient than the gasoline vehicle.

  Therefore, a telematics service linked with a car navigation device mounted on an electric vehicle is being studied. A telematics service is a next-generation information service for automobiles.

  In Patent Document 1, a charging stand with the shortest waiting time is extracted according to the current remaining battery level and presented to the user. In Patent Document 2, the travelable area corresponding to the charging time of the battery is displayed by contour lines by polygon approximation and presented to the user.

  In the related art, generally, a travelable distance and required power of an electric vehicle are calculated using a route search algorithm.

JP 2011-83166 A JP 2009-25128 A

  In the prior art, a route search algorithm or the like is used to try to derive accurate data using traffic jam information and gradient information, but this is a statistical estimated value and does not directly refer to the actual value. Therefore, the information presented to the user is not sufficiently reliable, and there is a possibility that the electric vehicle on which the user gets cannot reach the destination.

  In the prior art, the time and distance until arrival at the charging station are displayed, but the power required for arrival is not displayed in an easy-to-understand form. Therefore, the user cannot instantaneously determine which charging stand can be reached with the current remaining battery level, and the user's usability is poor.

  Accordingly, an object of the present invention is to provide a charging station display system and a charging station display method that can provide a charging station that can be reached by an electric transportation device with relatively high reliability. Another object of the present invention is to collect travel history data of a plurality of electric transportation devices and use the travel history data to reach a predetermined electric transportation device designated by a display terminal with relatively high accuracy. It is an object of the present invention to provide a charging stand display system and a charging stand display method capable of extracting and displaying various charging stands.

  In order to solve the above-mentioned problem, a charging station display system according to the present invention is a charging station display system for detecting and displaying a charging station that can be reached by an electric transportation device, and includes a plurality of charging stations and a plurality of electric motors. A management server that is connected to a transport device via a communication network, and that collects travel history data including the remaining battery level, travel distance, position, and date / time from a plurality of electric transport devices and manages them by a data management unit; The server is connected to the server via a communication network so that two-way communication is possible, and display information including information on a charging station that can be reached from a predetermined position by a predetermined electric transport device is requested to the management server via the communication network and managed. A display terminal for displaying display information received from the server via the communication network. When a display information transmission request is received from the terminal, a predetermined position and a remaining battery level of a predetermined electric transportation device are acquired, and travel history data corresponding to a predetermined position of the predetermined electric transportation device is acquired from the data management unit, Display information is generated based on travel history data corresponding to a predetermined position of a predetermined electric transportation device, a remaining battery level of the predetermined electric transportation device, and charging station position information for managing positions of a plurality of charging stations. , Send to display terminal.

  The display terminal can request identification information from the management server by indicating identification information for identifying a predetermined electric transport device.

  The management server consumes a plurality of charging stations existing in a predetermined range determined according to a predetermined position of the predetermined electric transportation device until the predetermined electric transportation device reaches the plurality of charging stations from the predetermined position. The display terminal generates a display information by classifying it into a plurality of groups in accordance with the predetermined electric transportation in a display form that is different for each of the plurality of groups, and shows a mark indicating a charging station included in the display information received from the management server. It can be displayed on a map with a predetermined position of the device.

ADVANTAGE OF THE INVENTION According to this invention, the charging stand which an electric transport apparatus can reach can be provided with comparatively high reliability. In addition, according to the present invention, traveling history data of a plurality of electric transportation equipment is collected, and the predetermined electric transportation equipment specified by the display terminal can be reached with relatively high accuracy using the traveling history data. Can be extracted and displayed.

It is an example of the whole block diagram of the charge stand display system for electric transport equipment. The storage contents of the telematics center memory are shown. It is an example of an internal structure of the electric vehicle which is an example of an electric transport apparatus. It is an example of the internal structure of a charging stand. It is an example of the internal structure of a display terminal. It is an example of the database which manages the information which shows the charge start in a charging stand. It is an example of the database which manages the information which shows that the charge to an electric vehicle was started. It is an example of the database for managing the information regarding a charging station. It is an example of the database which manages probe information. It is an example of the information processing sequence performed between an electric vehicle and a telematics center at the time of the charge start to an electric vehicle. It is an example of the information processing sequence performed between a charging stand and a telematics center when a charging stand charges an electric vehicle. It is an example of the flowchart which shows the process for matching the information which shows the charge start in a charging stand, and the information which shows the charge start to an electric vehicle. It is an example of the information processing sequence for deriving the charge stand which an electric vehicle can reach and displaying on a display terminal. It is an example of the flowchart which shows the process which derives | leads-out the charging station which an electric vehicle can reach. It is an example of the screen structure which a display terminal displays. It is another example of the screen structure which a display terminal displays.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, as will be described in detail below, traveling history data of a plurality of electric transportation devices is collected, and charging within a predetermined range with reference to the position of the predetermined electric transportation device is performed using the traveling history data. Extract the stand. In the present embodiment, these charging stations are classified into a plurality of groups according to the amount of power consumption required for arrival, and are displayed in different display forms for each group.

  In the present embodiment, it is not based on a statistical estimated value, but directly using the actual data (travel history data) traveled by the electric transportation device, whether or not the arrival to the charging station is possible, and the electric energy required for the arrival Determine how much (power consumption) is. Thereby, a charging stand can be shown to a user with comparatively high reliability, and a user's usability improves.

  FIG. 1 shows the overall configuration of a charging stand display system. The system includes, for example, at least one telematics center 10, a plurality of electric vehicles 20, a plurality of charging stations 30, and a plurality of display terminals 40.

  As will be described later, the telematics center 10 collects and manages information from each electric vehicle 20 and each charging station 30, extracts the charging station 30 associated with the predetermined electric vehicle 20 specified by the display terminal 40, and It transmits to the display terminal 40.

  The telematics center 10 includes, for example, a CPU (Central Processing Unit) 11, a memory 12, a storage device 13, and a communication unit 14. The CPU 11 performs information processing based on the reachable charging station derivation program P10 stored in the memory 12. The storage device 13 includes, for example, a nonvolatile storage medium such as a hard disk drive or a flash memory device. The communication unit 14 is a circuit for communicating with each electric vehicle 20, each charging station 30, and each display terminal 40 via the communication network CN. These modules 11 to 14 are connected to each other by an internal communication line 15 such as a bus.

  The communication network CN can be configured by, for example, a mobile phone network or the Internet network, or both. The display terminal 40 is configured as, for example, a mobile phone, a portable information terminal, or a personal computer, but may be integrated with an in-vehicle device 23 (described later in FIG. 3) mounted on the electric vehicle 20.

  The electric vehicle 20 is an example of an “electric transportation device”. The electric vehicle 20 can include, for example, various types of moving bodies that use an electric motor such as a truck, a bus, a two-wheeled vehicle, and a standing-type traveling vehicle in addition to a passenger vehicle that travels with an electric motor. A configuration example of the electric vehicle 20 will be described with reference to FIG.

  The charging stand 30 is a device for charging a battery 24 (described later in FIG. 3) of the electric vehicle 20. A configuration example of the charging stand 30 will be described with reference to FIG.

  FIG. 2 is an explanatory diagram schematically showing the contents stored in the memory 12 of the telematics center 10.

  The reachable charging station derivation program P10 developed in the memory 12 is a computer program for deriving a charging station or the like that the electric vehicle 20 can reach from a predetermined position. The reachable charging station derivation program P10 includes, for example, a charging station charging start information processing unit P11, an electric vehicle charging start information processing unit P12, a charging start information connection processing unit P13, and a reachable charging station information distribution unit P14. Includes programs to implement each.

  The charging stand charging start information processing unit P <b> 11 is a function for acquiring information indicating that charging has started at the charging stand 30 from the charging stand 30. The electric vehicle charging start information processing unit P <b> 12 is a function for acquiring information indicating that charging of the electric vehicle 20 has been started from the electric vehicle 20. The charging start information connection processing unit P13 is a function that collates information indicating charging start at the charging station 30 with information indicating charging start of the electric vehicle 20 and associates related information with each other. The reachable charging station information distribution unit P <b> 14 is a function of distributing reachable charging station information as “display information” to the display terminal 40. The reachable charging station information classifies information on a plurality of charging stations 30 related to charging of the electric vehicle 20 into a plurality of groups, as will be described later.

  The reachable charging station derivation program P10 appropriately reads out the charging station charging start information database T10, the electric vehicle charging start information database T11, the charging station information database T12, and the probe information database T13 from the storage device 13 and stores them in the memory 12. Expand to. The configuration of each database T10 to T13 will be described later. Hereinafter, the database may be abbreviated as DB (Data Base).

  The telematics center 10 receives data from each electric vehicle 20, each charging station 30, and each display terminal 40 via the communication unit 14. Data received from the electric vehicle 20 is passed to the electric vehicle charging start information processing unit P12. The data received from the charging station 30 is passed to the charging station charging start information processing unit P11. The data received from the display terminal 40 is passed to the reachable charging station information distribution unit P14.

  The charging stand charging start information processing unit P11 accumulates the charging start information received from the charging stand 30 in the charging start information DB T10. The electric vehicle charging start information processing unit P12 accumulates the charging start information received from the electric vehicle 20 in the charging start information DB T11 and the probe information DB T13. The charge start information connection processing unit P13 performs update processing of the probe information DB T13 based on the collected charge start information.

  The reachable charging station information distribution unit P14 requests the electric vehicle 20 to transmit vehicle information in response to a request from the display terminal 40. The requested vehicle information includes, for example, the remaining amount of power storage (hereinafter referred to as SoC (State of Charge)) and the like.

  The reachable charging station information distribution unit P14 uses the vehicle information acquired from the electric vehicle 20 to acquire data of the charging station 30 that the electric vehicle 20 can reach with the current SoC from the charging station information DB T12. The reachable charging station information distribution unit P14 classifies the acquired plurality of charging stations 30 according to the amount of power necessary to reach the charging station 30, and creates reachable charging station information. The reachable charging station information distribution unit P14 transmits the created reachable charging station information to the display terminal 40 via the communication unit 14 and the communication network CN.

  FIG. 3 shows an example of the internal configuration of the electric vehicle 20. The electric vehicle 20 includes, for example, an electronic control device 21, a battery controller 22, an in-vehicle device 23, a battery 24, and a charging plug insertion port 25. Note that the configurations of the electric motor, the operating device, and the like are omitted.

  The electronic control device 21 is in charge of comprehensive electrical control of the electric vehicle 20. The in-vehicle device 23 is configured as a car navigation device, for example. The battery controller 22 controls charging to the battery 24 and discharging from the battery 24. The battery controller 22 is also configured as one of the electronic control devices 21.

  The electronic control device 21, the battery controller 22, and the in-vehicle device 23 are connected via a vehicle network 26. The in-vehicle device 23, the electronic control device 21, and the battery controller 22 exchange control information with each other via the vehicle network 26. Examples of the vehicle network 26 include a CAN (Controller Area Network).

  The battery 24 can be configured as, for example, a lithium ion storage battery or a lead storage battery, and stores electric power that is a power source of the electric vehicle 20. The charging plug of the charging stand 30 is inserted into the charging plug insertion port 25. The battery 24 is charged via a charging plug connected to the charging plug insertion port 25. The battery 24 and the charging plug insertion port 25 are connected to the battery controller 22.

  Instead of the battery 24, for example, a capacitor such as an electric double layer capacitor may be used.

  The in-vehicle device 23 includes, for example, a memory 230, a CPU 231, a storage device 232, a GPS (Global Positioning System) sensor 233, and a communication unit 234, and these modules 230 to 234 include internal communication such as a bus. They are connected to each other via a line 235.

  The CPU 231 executes predetermined information processing based on the vehicle information control program P20 stored in the memory 230. The storage device 232 is configured as a hard disk drive or a flash memory device, for example. The GPS sensor 233 acquires position information of the vehicle (electric vehicle 20).

  The vehicle information control program P20 includes, for example, programs for realizing the probe information storage unit P21, the electric vehicle charging start information transmission unit P22, and the vehicle information transmission unit P23, respectively. The vehicle information control program P20 expands the probe information DB T21 stored in the storage device 232 in the memory 230 as necessary.

  The probe information storage unit P21 is a function for storing probe information as “travel history data” in the probe information DB T21. The electric vehicle charging start information transmitting unit P22 is a function for transmitting to the telematics center 10 information indicating that charging of the electric vehicle 20 has started. The vehicle information transmission unit P23 is a function for transmitting predetermined vehicle information to the telematics center 10.

  When the communication unit 234 receives data (vehicle information transmission request) from the telematics center 10, the data is delivered to the vehicle information transmission unit P23.

  The probe information storage unit P21 periodically acquires the position information of the electric vehicle 20 and the SoC information of the battery 24, stores the position information and the SoC information in association with the acquisition date and stores them in the probe information DB T21. .

  The position information of the electric vehicle 20 can be acquired from the GPS sensor 233. The SoC information of the battery 24 can be acquired from the battery controller 22.

  When charging of the electric vehicle 20 is started, the vehicle information control program P20 uses the data stored in the probe information DB T21 as will be described later, via the communication unit 234 and the communication network CN. 10 to send.

  Further, the vehicle information transmission unit P23 receives the position information acquired from the GPS sensor 233 and the SoC information acquired from the battery controller 22 in response to the vehicle information transmission request from the telematics center 10 through the communication unit 234 and the communication network CN. To the telematics center 10.

  FIG. 4 shows an example of the internal configuration of the charging stand 30. The charging stand 30 includes, for example, a memory 31, a CPU 32, a communication unit 33, a charging plug controller 34, and a charging plug 35.

  The CPU 32 executes predetermined information processing based on the charging station information control program P30 stored in the memory 31. The communication unit 33 is a circuit for communicating with the telematics center 10 via the communication network CN. The charging plug controller 34 controls the operation of the charging plug 35. These modules 31 to 34 are connected to each other via an internal communication line 36 such as a bus. The charging plug 35 is connected to the charging plug controller 34.

  The charging station information control program P30 includes a program for realizing the charging station charging start information transmission unit P31. The charging station charging start information transmission unit P31 is a function for transmitting information indicating that charging of the electric vehicle 20 at the charging station 30 has started to the telematics center 10.

  The charging stand charging start information transmitting unit P31 periodically checks whether constant charging has been started via the charging plug controller 34. When charging is started, the charging station charging start information transmitting unit P31 associates the current time with the identifier of the charging station (hereinafter, referred to as CSID (Charge Station Identifier)), via the communication unit 33 and the communication network CN. To the telematics center 10.

  FIG. 5 shows an example of the internal configuration of the display terminal 40. The display terminal 40 can be configured as, for example, a mobile phone, a portable information terminal, a tablet computer, a notebook computer, or the like. In addition, you may integrate the vehicle equipment 23 and the display terminal 40 which were mentioned above.

  The display terminal 40 includes, for example, a memory 41, a CPU 42, a storage device 43, an input device 44, an output device 45, and a communication unit 46. The communication lines 47 are connected to each other.

  The CPU 42 executes predetermined information processing based on the reachable charging station display program P40 stored in the memory 41. The storage device 43 is configured like a hard disk drive or a flash memory device, like the other storage devices described above.

  The input device 44 is a device for the user to input instructions or information. The input device 44 can be composed of, for example, a keyboard switch, a mouse, a touch panel, a voice recognition device, and the like. The output device 45 is a device for providing information to the user, and includes, for example, a display device, a printer, or the like. The communication unit 46 is a circuit for communicating with the telematics center 10 via the communication network CN.

  The reachable charging station display program P40 includes a program for realizing the reachable charging station information display unit P41. The reachable charging station information display unit P41 is a function for causing the output device 45 to display the reachable charging station information received from the telematics center 10 via the communication unit 46.

  The reachable charging station information display program P40 expands the map DB T41 stored in the storage device 43 in the memory 41 as necessary. In addition, the structure which acquires the map data of a required range from an external map data delivery server (not shown), and stores it in map DB T41 may be sufficient.

  The reachable charging station information display unit P41, with respect to the input from the input device 44, tells the telematics center 10 the current position of the electric vehicle 20 to be displayed, the SoC information, and information such as the reachable charging station. Request. The reachable charging station information display part P41 classifies each charging station 30 into a plurality of groups for each amount of power required for arrival based on the reachable charging station information acquired from the telematics center 10, and displays different for each group. Output in form.

  FIG. 6 shows an example of the charging stand charging start information DB T10. The charging stand charging start information DB T10 manages information indicating that charging has started at the charging stand 30, and is provided in the telematics center 10.

  The charging stand charging start information DB T10 manages, for example, the CSID C100 and the date and time C101 when charging is started at the charging stand 30 in association with each other. As described above, the CSID is an identifier for uniquely identifying a plurality of charging stations 30 under the management of this system.

  FIG. 7 shows an example of the electric vehicle charging start information DB T11. The electric vehicle charging start information DB T11 manages information indicating that charging of the electric vehicle 20 has started, and is provided in the telematics center 10.

  The electric vehicle charging start information DB T11 manages, for example, the record ID C110, the date and time C111 when charging of the electric vehicle 20 is started, and the position of the electric vehicle 20 when charging is started. The record ID C110 is an identifier for identifying a series of probe information groups acquired from the electric vehicle 20. The record ID is not set for each piece of probe information, but is set for each group of a series of probe information. The group of probe information is a plurality of pieces of probe information transmitted from the electric vehicle 20 to the telematics center 10 at the start of charging.

  FIG. 8 shows an example of the charging station information DB T12. The charging station information DB T12 manages the installation position of the charging station 30, and is provided in the telematics center 10.

  The charging station information DB T12 manages, for example, the CSID C120 and the installation position C121 of the charging station 30 in association with each other. In the present embodiment, the position of the electric vehicle 20 and the position of the charging stand 30 are expressed by latitude and longitude data. Instead, the position may be expressed by data according to another coordinate system.

  FIG. 9 shows an example of the probe information DB T13 managed by the telematics center 10. Note that the probe information DB T21 managed by the electric vehicle 20 also includes the same configurations C130 to C139 as in FIG. Here, the probe information DB T13 on the telematics center 10 side will be described.

  The probe information DB T13 includes, for example, a record ID C130, a date and time C131, position information C132, SoC information C133, power consumption C134, travel distance C135, VIN C136, CSID C137, and arrival SoC information C138. , And a traveling distance C139 on arrival.

  The record ID C130 is an identifier for identifying a series of probe information groups transmitted collectively from the electric vehicle 20 to the telematics center 10 as described above. The date and time C131 is the date and time when the probe information is acquired. The position information C132 indicates the position of the electric vehicle 20 at the probe information acquisition date and time. The SoC information C133 indicates the SoC at the probe information acquisition date. The power consumption C134 indicates the power consumption rate per unit travel distance at the probe information acquisition date and time. The travel distance C135 indicates the total travel distance (odometer value) at the probe information acquisition date and time.

  VIN (Vehicle Identification Number) C136 is an identifier for uniquely identifying each electric vehicle 20. CSID C137 is an identifier of each charging station 30. The arrival SoC information C138 is the SoC when the electric vehicle 20 arrives at the charging station 30 and starts charging. The arrival travel distance C139 is the total travel distance when the electric vehicle 20 arrives at the charging stand 30 and is charged.

  In the record indicated by the record ID “1277” on the lower side of FIG. 9, null is set for each of CSID C137, arrival SoC C138, and arrival travel distance C139. When the charge start information acquired from the charging station 30 and the charge start information acquired from the electric vehicle 20 are associated with each other by a charge start information verification process (link process), which will be described later, values appear in the fields C137 to C139. Is set.

  FIG. 10 shows a flow of information processing of the electric vehicle 20 and the telematics center 10 when the electric vehicle 20 arrives at the charging station 30 and starts charging.

  FIG. 10 shows a series of processes in which the electric vehicle charging start information processing unit P12 of the telematics center 10 collects electric vehicle charging start information from the probe information storage unit P21 and the electric vehicle charging start information transmitting unit P22 of the electric vehicle 20. It is shown.

  The probe information accumulating unit P21 and the electric vehicle charging start information transmitting unit P22 start executing when the on-vehicle device 23 is turned on, and end executing when the on-vehicle device 23 is turned off.

  In FIG. 10, the vehicle-mounted device 23 collects the position measurement result (position information) from the GPS sensor 233, the current SoC from the battery controller 22, and the power consumption and the total travel distance from the electronic control device 21 (S10). The in-vehicle device 23 stores each collected information as probe information in the probe information DB T21 on the electric vehicle side (S11).

  Thereafter, the vehicle-mounted device 23 confirms whether charging has been started via the battery controller 22 (S12). When the start of charging is detected in S12, the in-vehicle device 23 transmits the probe information accumulated in the probe information DB T21 and the predetermined charging start information related to the charging start to the telematics center 10, and the transmitted data is probed. It deletes from information DB T21 (S13).

  The predetermined charge start information includes, for example, the current position as the charge start position, the current SoC as the charge start SoC, the current total travel distance as the total travel distance at the start of charge, and the charge start time as The current time and VIN are included.

  Note that the in-vehicle device 23 acquires, for example, the power consumption of the air conditioner and / or the amount of power generated by the regenerative brake from the electronic control device 21 and uses the information on the power consumption and the amount of power generated as part of the probe information. It may be transmitted to the telematics center 10.

  The amount of power consumed by the air conditioner of the electric vehicle 20 and the amount of power generated by the regenerative brake can be used to more accurately determine whether the electric vehicle 20 can reach the charging station 30. However, in this embodiment, since the electricity cost is included as part of the probe information, the power consumption of the air conditioner and the amount of power generated by the regenerative brake are considered to be directly or indirectly reflected in the electricity cost. be able to.

  Note that the timing for deleting the transmitted data from the probe information DB T21 may be when the vehicle-mounted device 23 is powered off. In this case, probe information from the latest departure of the electric vehicle 20 to the start of charging is stored in the probe information DB T21.

  The telematics center 10 that has received the charging start information from the electric vehicle 20 registers the charging start position and the charging start time in the electric vehicle charging start information DB T11 (S20). Further, the telematics center 10 registers the probe information, the charging start SoC, the charging start total travel distance, and the VIN in the probe information DB T13 (S21).

  At this time, the telematics center 10 registers the data in the database so that the record ID C110 of the electric vehicle charging start information DB T11 and the record ID C130 of the probe information DB T13 have the same value.

  If the start of charging is not detected in S12, after waiting for a predetermined time, step S10 is executed again (S14).

  FIG. 11 shows a flow of processing in which the telematics center 10 collects charging station charging start information from the charging station 30. This process is performed between the charging station charging start information transmitting unit P31 of the charging station 30 and the charging station charging start information processing unit P11 of the telematics center 10.

  The charging stand charging start information processing unit P11 starts executing when the power of the charging stand 30 is turned on, and ends executing when the power is turned off.

  The charging stand 30 confirms whether charging is started (S30). When the charging start is detected in S30, the charging station 30 transmits the current time and the CSID of the charging station to the telematics center 10 as the time of starting charging (S31).

  When receiving the charging start information from the charging station 30, the telematics center 10 registers the CSID and the charging start time in the charging station charging start information DB T10 (S40).

  When the charging start is not detected in S30, the charging stand 30 waits for a predetermined time and then executes the charging start confirmation S30 again (S32).

  FIG. 12 shows a processing flow of the charging start information connection processing unit P13 in the telematics center 10. This process is periodically executed from the time of starting the telematics center 10, and there is no limitation on the interval. The process of FIG. 12 can be executed regularly or irregularly. Further, it is assumed that the position information 821 of the charging station 30 is stored in advance in the charging station information DB T12. Hereinafter, the charging start information connection processing unit P13 may be abbreviated as a connection processing unit P13.

  In FIG. 12, the connection processing unit P13 acquires one piece of data from the charging station charging start information DB T10 (S50). Based on the charging station charging start date and time C101 included in the acquired charging start information, the connection processing unit P13 determines from the electric vehicle charging start information DB T11 that the difference from the electric vehicle charging start date and time C111 is a predetermined time difference α or less. The predetermined electric vehicle charging start information is searched (S51).

  Further, the connection processing unit P13 searches for the electric vehicle whose linear distance between the position information C121 of the charging station 30 and the electric vehicle charging start position C112 is equal to or less than the predetermined separation distance β from the searched predetermined electric vehicle charging start information. The charging start information is searched (S52). Note that the order of S51 and S52 may be reversed.

  In S52, the determination may be made by using a difference in latitude or longitude between two points, or a difference in both.

  Further, the position information C121 of the charging station 30 may be generated by the telematics center 10 based on the charging start information of the electric vehicle 20 and the position information C112 at that time. Alternatively, the charging station 30 may include a position sensor such as a GPS sensor, or the charging station position information may be stored in the memory 31 of the charging station 30 in advance. In that case, when transmitting charging station charging start information from the charging station 30 to the telematics center 10, the position information C121 of the charging station 30 may be transmitted together.

  After performing a search in S51 and S52, the connection processing unit P13 checks whether the search result is 0 (S53). When it is confirmed in S53 that the result is zero (S53: YES), the connection processing unit P13 puts the processing on the charging stand charging start information to be processed selected in S50 on hold and charges the next charging stand. The process returns to S50 to acquire start information.

  When it is confirmed in S53 that the result is not 0 (S53: NO), the connection processing unit P13 confirms whether the search result is 2 or more (S54). When it is confirmed in S54 that the result is two or more (S54: YES), the connection processing unit P13 has the smallest difference between the charging start date / time C101 at the charging station and the charging start date / time C111 to the electric vehicle. One electric vehicle charging start information is selected (S55). In S55, the electric vehicle charging start information with the smallest distance difference may be selected. Further, instead of the difference in distance, a difference in latitude or longitude may be used.

  On the other hand, when there is one search result (S54: NO), the connection processing unit P13 selects the only electric vehicle charging start information. Through the above processing, the connection processing unit P13 takes out charging station charging start information and electric vehicle charging start information one by one.

  Thereafter, the connection processing unit P13 searches for all probe information in which the record ID C110 of the extracted electric vehicle charging start information and the record IDC 130 of the probe information DB T13 are the same (S56).

  The connection processing unit P13 performs update to add the CSID C100 of the charging station charging start information, the arrival SoC C138, and the arrival total travel distance C139 to each searched probe information (S57). As a result, out of the probe information stored in the probe information DB T13, in the probe information in which the charging location is specified, CSID or the like that specifies the charging station 30 at the charging location is stored instead of “null”. The

  The connection processing unit P13 deletes the electric charging start information from the charging stand charging start information DBT10 and the electric vehicle charging start information DB T11, respectively (S58). This is because the collation has been completed and it is not necessary to hold any more.

  FIG. 13 shows a series of processes for deriving and displaying information about reachable charging stations. This process is executed among the reachable charging station information display unit P41 of the display terminal 40, the reachable charging station information distribution unit P14 of the telematics center 10, and the vehicle information transmission unit P23 of the electric vehicle 20.

  The user inputs VIN for designating a target electric vehicle (“predetermined electric vehicle”) via the input device 44. When the VIN of the target electric vehicle 20 is input, the display terminal 40 requests the telematics center 10 for information on the charging station 30 that can be reached by the electric vehicle 20 specified by the VIN (S60).

  Note that information other than VIN may be used as long as the information can identify the target electric vehicle 20. For example, when the telematics center 101 has a user management DB that stores the correspondence between the user identifier (user ID) and the VIN, the user may input the user ID from the input device 44 instead of the VIN.

  Further, the information transmitted from the display terminal 40 to the telematics center 10 may include information on the scale of the map to be displayed and the display area. These pieces of information can be used as information for limiting the range of the charging station 30 to be searched in S90 described later with reference to FIG. That is, only the charging station 30 that can be reached by the electric vehicle 20 needs to be extracted from the charging stations 30 within the range that can be displayed on the display terminal 40, and the processing is simplified.

  When the telematics center 10 receives a vehicle state acquisition request from the display terminal 40 (S70), the telematics center 10 provides vehicle information such as the current location, SoC, and power consumption to the predetermined electric vehicle 20 corresponding to the designated VIN. A request is made to transmit (S71).

  The electric vehicle 20 receives a vehicle information acquisition request from the telematics center 10 (S80). The electric vehicle 20 acquires the current position (position positioning result) from the GPS sensor 233, acquires the current SoC and the remaining battery level from the battery controller 22, collects the current power consumption from the electronic control device 21, and Information is transmitted to the telematics center 10 as vehicle information (S81).

  The telematics center 10 receives vehicle information from a predetermined electric vehicle 20 (S72). The telematics center 10 derives the identifier CSID of the charging station 30 that the predetermined electric vehicle 20 can reach, the position information of the charging station 30, and the power required for arrival as information on the charging station that can be reached (S73). ).

  Details of S73 will be described later with reference to the flowchart of FIG. Thereafter, the telematics center 10 transmits an information group indicating the reachable charging station 30 together with the vehicle information to the display terminal 40 (S74).

  In the present embodiment, the information indicating the charging station that can be reached by the predetermined electric vehicle 20 also includes information on the charging station that has low reachability and the charging station that is estimated to be unreachable. . Which charging station is to be used is a matter that should be left to the final judgment of the user, and therefore information on the charging station 30 with a low possibility is also provided.

  The user can also instruct the charging station 30 with low reachability not to be displayed. In that case, information on the charging station 30 with low reachability can also be transmitted to the display terminal 40, and only charging stations that satisfy the reachability specified by the user can be displayed.

  Alternatively, the reachability specified by the user is transmitted from the display terminal 40 to the telematics center 10 together with the VIN, and the telematics center 10 transmits only the information regarding the charging station 30 having the specified reachability to the display terminal 40. May be.

  Reachability is the possibility to reach the charging station. When the remaining battery level of the electric vehicle 20 is equal to or greater than the amount of power required to travel from the current position to the charging station 30, the reachability is high. The reachability decreases as the remaining battery level falls below the required amount of power.

  The information transmitted from the telematics center 10 to the display terminal 40 may include the travel distance and travel time from the current location of the electric vehicle 20 to the charging station 30. Information about these travel distance and travel time can be calculated by the telematics center 10 using a route search algorithm.

  The display terminal 40 receives vehicle information and reachable charging station information from the telematics center 10 (S61). The display terminal 40 causes the output device 45 to display the position of the predetermined electric vehicle 20 and the information on the reachable charging station 30 on the map information stored in the map DB T41 (S62). Examples of the display screen will be described later with reference to FIGS.

  The screen (S62) displayed on the display terminal 40 can be periodically updated while the predetermined electric vehicle 20 is traveling. For example, when the probe information is accumulated in the probe information DB T21, the telematics center 10 may be inquired about the latest information on the reachable charging station, and the display screen may be updated based on the latest information.

  The vehicle information of the electric vehicle 20 may be manually input by the user from the input device 44 of the display terminal 40 and transmitted to the telematics center 10. In this case, the telematics center 10 does not transmit a vehicle state acquisition request (S71) to the electric vehicle 20.

  The map DB T41 that stores the map information may exist in the telematics center 10 instead of in the display terminal 40. In this case, the display terminal 40 may receive a map image around the current location of the predetermined electric vehicle 20 from the telematics center 10 together with the reachable charging station information via the communication unit 46 and the communication network CN.

  The flowchart in FIG. 14 shows details of the reachable charging station derivation process (S73 in FIG. 13).

  First, when the battery 24 is in a fully charged state, the telematics center 10 extracts a charging station 30 that exists within a range where the predetermined electric vehicle 20 can travel from the current position as a search target (S90). This is because the charging stations to be searched are narrowed down to charging stations within a predetermined range to speed up the processing.

  For this reason, the telematics center 10 determines that the distance between the current location and the charging station 30 between the current location and the charging station 30 is fully charged based on the current position, the remaining battery level, and the power consumption sent from the predetermined electric vehicle 20. A charging station that is shorter than the travelable distance in the state is derived as a search target (S90).

  In S90, the charging station to be searched may be narrowed down based on the map scale and displayable area information sent from the display terminal 40.

  Alternatively, the process of S90 may be omitted. In this case, the charging station 30 for which there is no arrival record from the current position of the electric vehicle 20 is not included in the information transmitted to the display terminal 40.

  Next, the telematics center 10 searches the probe information DB T13 for probe information whose linear distance between the current location and the position information C121 is γ or less (S91). As a search criterion at this time, instead of the linear distance between the two points, a difference in latitude or longitude between the two points, or a difference in both may be used.

  The probe information to be searched may be restricted based on the date and time. For example, it is conceivable to limit probe information to be used according to the same time zone, the same day of the week, or the like. This is because the road congestion may change depending on the day of the week and time zone. Accordingly, the reachable charging station 30 may be derived using probe information of the same day of the week and time zone when the electric vehicle 20 to be displayed is specified. Note that it is not always necessary to distinguish between the seven days of the week, and it is sufficient if so-called weekdays can be distinguished from holidays and holidays.

  Probe information to be searched may be limited based on VIN. For example, if it is limited to probe information having the same VIN as a predetermined electric vehicle, the reachable charging station 30 can be derived based only on the user's own driving history. In this case, it is possible to derive the charging stand by eliminating the skill of driving among users.

  Furthermore, when the VIN of the same vehicle type is known, the reachable charging station 30 may be derived using only the probe information of the same vehicle type as the predetermined electric vehicle 20. In this case, differences due to vehicle types can be eliminated.

  Now, the telematics center 10 confirms whether the result of searching for probe information is zero (S92). When the search result is 0 (S92: YES), it can be determined that there is no probe information that has departed or passed through the current location of the predetermined electric vehicle 20. The telematics center 10 determines that there is no charging station with an arrival record (S93).

  If the search result is not 0 (S92: NO), the telematics center 10 checks whether there is another record ID C130 in which the CSID C137 of the reachable charging station 30 is the same (S94).

  When probe information having the same record ID C130 exists (S94: YES), the telematics center 10 selects a record ID having the smallest difference between the total travel distance C139 on arrival and the total travel distance C135 (S95). This is because the probe information having the selected record ID can be determined as the probe information that arrives at the charging station specified by the CSID C137 from the position information C132 of the predetermined electric vehicle 20 through the shortest route.

  The telematics center 10 of this embodiment accumulates a large amount of probe information as the operation continues. In a high-traffic road such as a main road or a main road, a lot of probe information indicating that the vehicle has moved from the same point to the same charging station is accumulated.

  However, even when moving from the same point to the same charging station, the actual route is different. An electric vehicle 20 reaches a charging station while repeating a detour. The other electric vehicle 20 goes directly to the charging station. Therefore, in the present embodiment, probe information aiming at the charging station 30 at the shortest distance is used from the probe information indicating that the battery is charged at the same charging station 30 starting from the same point.

  Through the above processing, the telematics center 10 specifies probe information indicating the record of arrival at the charging station for each CSID one by one. When the probe information including the target CSID does not exist, the telematics center 10 determines that there is no charging station 30 with a track record of arrival from the current location of the predetermined electric vehicle 20.

  The telematics center 10 determines that the predetermined electric vehicle 20 is actually transferred to the charging station 30 based on the electric cost obtained from the electric vehicle 20, the difference between the SoC C138 and SoC 703 when the probe information arrives, and the electric cost C134 of the probe information. The amount of power required to arrive (power consumption) is derived for each charging station (S96).

  The telematics center 10 determines that arrival at the charging station 30 is not possible when the power consumption required to reach the charging station 30 exceeds the remaining battery level of the predetermined electric vehicle 20.

  In calculating the necessary power consumption, the power consumption by using the air conditioner and the power generation by the regenerative brake may be taken into consideration. In addition, the power consumption required for arrival may be calculated based on the difference between the SoC C138 and the SoC 133 at the time of arrival of the probe information, instead of calculating the power consumption required for arrival.

  FIG. 15 is an example of a display screen of the reachable charging station displayed on the output device 45 of the display terminal 40. The area on the left side of the screen in FIG. 15 is a map area G10 (1). An area adjacent to the right side of the map area G10 (1) is an explanation area G11 for explaining a display form of the charging station 30.

  In the map area G10 (1), an icon GP11 that symbolizes the predetermined electric vehicle 20 and icons GP12 to GP16 that symbolize the charging station 30 existing around the predetermined electric vehicle 20 are displayed over the map data. Has been. Further, an image GP17 indicating the remaining battery level of the predetermined electric vehicle 20 is also displayed in the map area G10 (1).

  In the explanation area G11, the charging stations 30 are classified and displayed for each stage (for each category) of the electric energy required to reach each charging station 30.

  The first icon GP12 indicates a charging station in which the amount of power required for reaching is less than or equal to the remaining battery level. The remaining battery level shown in FIG. 15 is 50%, and the amount of power required to reach the charging station indicated by the first icon GP12 is, for example, less than 40%.

  The second icon GP13 indicates a charging station where the amount of power required to reach the battery may not be sufficient only with the remaining battery level. The amount of electric power required to reach the vehicle varies depending on the actual road conditions, driving skill, vehicle type, and the like. In the example of FIG. 15, the amount of power required for reaching is 40% or more and less than 80%. Therefore, the predetermined electric vehicle (GP11) may or may not be able to reach the charging station indicated by the second icon GP13.

  The third icon GP14 indicates a charging station in which the amount of electric power required for reaching greatly exceeds the remaining battery level and is unlikely to be reached. In the example of FIG. 15, the amount of power required to reach is 80% or more. Although it is unlikely, it is a charging stand that cannot be declared as impossible.

  The fourth icon GP15 indicates a charging station in which the amount of power required for arrival is far greater than the remaining battery level, and it can be determined that it cannot be reached even if favorable conditions are met.

  The fifth icon GP16 indicates a charging station where there is no precedent for an electric vehicle arriving from the current position of a predetermined electric vehicle (GP11). For example, a newly established charging station is applicable.

  The electric vehicle battery information display GP 17 may be an image, a character string, or a combination of both. The user can easily determine the charging station 30 where the electric vehicle 1302 can reliably arrive by browsing the map area GP10 (1) together with the display form explanation area GP11.

  The display category can also be designated by the user. The user may input a value indicating the range of the electric energy required for reaching from the input device 44.

  You may enable it to switch the display or non-display of the icon image which shows the position of a charging stand for every category. For example, the user can display only a charging station of a category having the largest amount of power required to reach, or can display only a category having a power amount required to reach less than the current remaining battery level.

  As an example of changing the display form (icon image) step by step, the amount of power required for arrival at the charging station has been illustrated, but instead of this, the travel distance until arrival or the travel time until arrival is used. Also good.

  Furthermore, as another form, the display terminal 40 may manage the position information of the charging station 30, and the amount of power required for arrival may be derived based on the travel distance based on the route search algorithm. In this case, the display terminal 40 may display the display form of the charging station while changing it stepwise according to the amount of power required for arrival.

  FIG. 16 is another example screen displayed on the output device 45 of the display terminal 40. In the screen of FIG. 16, in addition to the screen configuration of FIG. 15, a polygon having a vertex of a charging station group belonging to the same category (same group) is generated by a plurality of straight lines GP20, GP21, and GP22.

  As a premise for generating the straight lines GP20 to GP22, there must be at least three charging stations belonging to the same category. As a charging station that forms a vertex of a polygon, a convex polygon formed by selected vertices includes all charging stations of the same category in the polygon, and the number of sides is the smallest. The method of being a thing can be considered.

  In this way, by displaying a polygon that connects charging stations of the same category with a predetermined electric vehicle (GP11) as the center, the user can also reach the amount of power required to reach a charging station that has no previous example (probe information). Can be estimated to some extent. Therefore, user options are improved and usability is increased.

  Instead of a straight line, the charging station icon, which is the vertex of a polygon, may be expressed as a curve that passes smoothly.

  According to the present embodiment configured as described above, the reachable charging station 30 corresponding to the current position and SoC of the predetermined electric vehicle 20 can be relatively determined by directly referring to the probe information actually accumulated. Can be accurately derived.

  Further, since the display terminal 40 displays the charging stand while changing the display form of the charging stand in a stepwise manner according to the remaining battery level required for arrival, the user goes to which charging stand with the current remaining battery level. Judgment of what should be done can be made easily.

  In addition, this invention is not limited to the Example mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention.

  For example, as another embodiment, a point of interest (POI) may be targeted instead of a charging stand. In this case, charging start information from the charging stand is not used. Instead, when the vehicle-mounted device 23 is turned off, the electric vehicle 20 transmits information such as the arrival SoC to the telematics center 10 as point arrival information. Alternatively, when traveling within a certain distance of a certain POI while traveling, SoC or the like at the time of arrival is transmitted to the telematics center 10.

  The display terminal 40 displays the POI that can be reached from the current location while changing the display form step by step. By generating a polygon as shown in FIG. 16 for POIs in which power required for arrival belongs to the same category, it is also possible to display a boundary line of the travelable area.

  As yet another embodiment, the electric vehicle 20 and the display terminal 40 may be connected via the communication network CN. In this case, the function of the telematics center 10 is borne by the in-vehicle device 23 of the electric vehicle 20. The electric vehicle 20 does not transmit the probe information to the telematics center at the start of charging, and accumulates the probe information and the charging start information in the probe information DB T21 managed by the electric vehicle 20. Then, the display terminal 40 inquires the electric vehicle 20 about arrival chargeable station information, and the electric vehicle 20 derives a reachable charging station based on the probe information stored by itself and transmits it to the display terminal 40.

10: Telematics center 20: Electric vehicle 30: Charging station 40: Display terminal

Claims (12)

A charging station display system for detecting and displaying a charging station that can be reached by an electric transportation device,
It is connected to a plurality of charging stations and a plurality of electric transportation devices via a communication network, and collects traveling history data including battery remaining amount, traveling distance, position, date and time from the plurality of electric transportation devices, and data management. A management server managed by the department,
Display information including information on a charging station that is connected to the management server via a communication network so that bidirectional communication is possible and a predetermined electric transport device can be reached from a predetermined position is displayed on the management server via the communication network. A display terminal for requesting and displaying the display information received from the management server via the communication network;
With
The management server
When receiving a transmission request for the display information from the display terminal, obtain the predetermined position and the remaining battery level of the predetermined electric transport equipment,
The travel history data corresponding to the predetermined position of the predetermined electric transport equipment is acquired from the data management unit,
The display based on the travel history data corresponding to the predetermined position of the predetermined electric transportation device, a remaining battery level of the predetermined electric transportation device, and charging station position information for managing positions of a plurality of charging stations. Information is generated and transmitted to the display terminal;
Charging stand display system.
The display terminal indicates identification information for specifying the predetermined electric transportation device, and requests the display information from the management server.
The charging stand display system according to claim 1.
The management server includes a plurality of charging stations that exist in a predetermined range determined according to the predetermined position of the predetermined electric transportation device until the predetermined electric transportation device reaches the plurality of charging stations from the predetermined position. The display information is generated by classifying into a plurality of groups according to the amount of power consumed.
The display terminal displays a mark indicating a charging station included in the display information received from the management server in a display form that is different for each of the plurality of groups on a map together with a predetermined position of the predetermined electric transportation device. To
The charging stand display system according to claim 2.
The management server identifies at which charging station the plurality of electric transport devices that acquire the traveling history data are charged, and associates information for identifying the identified charging station with the traveling history data Managed by the data management unit
The charging stand display system according to claim 3.
The management server
Obtaining the charging start time and vehicle position when the electric transportation device is charged from the electric transportation device via the communication network,
Obtaining the charging start time and the charging station installation position from which the charging station has started charging the electric transportation device from the charging station via the communication network;
Based on the charging start time and the vehicle position of the electric transportation device, and the charging start time and the charging stand installation position at the charging station, it is specified at which charging station the electric transportation device has been charged. And
Associating the travel history data managed by the data management unit with information related to a charging station to which the electric transport device is charged;
The charging stand display system according to claim 4.
When the electric transportation device starts charging at a charging station, it transmits the traveling history data up to that point and predetermined charging start information related to charging start to the management server via the communication network,
The predetermined charging start information includes the charging start time when the electric transport device is charged, the vehicle position at the start of charging, the remaining battery level at the start of charging, and the travel distance at the start of charging. And
The management server stores and manages the travel history data and the predetermined charging start information in the data management unit,
The charging stand display system according to claim 5.
The predetermined electric transportation device is configured to transmit predetermined vehicle information to the management server via the communication network in response to a request from the management server.
The predetermined vehicle information includes a current position as the predetermined position of the predetermined electric transportation device, a remaining battery level, and a power consumption rate indicating a travelable distance per unit power,
The management server
Obtaining travel history data corresponding to the current position included in the predetermined vehicle information from the data management unit;
Based on the acquired travel history data, the remaining battery level, the power consumption rate, and the distance from the current position of the predetermined electric transportation device to the plurality of charging stations, the predetermined electric transportation device is Calculate the power consumption required to reach a plurality of charging stations for each of the plurality of charging stations,
Of the plurality of charging stations existing in the predetermined range, charging stations whose power consumption is equal to or less than the remaining battery level of the predetermined electric transportation device are classified into a first group,
Among the plurality of charging stations present in the predetermined range, charging stations in which the power consumption exceeds the battery remaining amount of the predetermined electric transportation device are classified into a second group,
The display information is generated by associating the position of the charging station belonging to the first group, the position of the charging station belonging to the second group, and the power consumption required to reach the charging station of each group. To
The charging stand display system according to claim 6.
The second group is further classified into a plurality of groups according to a required power consumption level.
The charging stand display system according to claim 7.
The management server also includes, in the display information, information related to a charging station in which corresponding traveling history data is not stored in the data management unit among a plurality of charging stations existing in the predetermined range.
The charging stand display system according to claim 8.
The predetermined range is set as a reachable range when the battery capacity of the predetermined electric transport device is full,
The charging stand display system according to claim 9.
A charging station display method for detecting and displaying a charging station that can be reached by an electric transportation device,
It is connected to a plurality of charging stations and a plurality of electric transportation devices via a communication network, and collects traveling history data including battery remaining amount, traveling distance, position, date and time from the plurality of electric transportation devices, and data management. A management server managed by the department,
Display information including information on a charging station that is connected to the management server via a communication network so that bidirectional communication is possible and a predetermined electric transport device can be reached from a predetermined position is displayed on the management server via the communication network. A display terminal for requesting and displaying the display information received from the management server via the communication network;
With
The management server
When receiving a transmission request for the display information from the display terminal, obtain the predetermined position and the remaining battery level of the predetermined electric transport equipment,
The travel history data corresponding to the predetermined position of the predetermined electric transport equipment is acquired from the data management unit,
The display based on the travel history data corresponding to the predetermined position of the predetermined electric transportation device, a remaining battery level of the predetermined electric transportation device, and charging station position information for managing positions of a plurality of charging stations. Information is generated and transmitted to the display terminal;
Charging stand display method.
A management server used in a charging station display system for detecting and displaying a charging station that can be reached by an electric transportation device,
It is connected to the display terminal, a plurality of charging stations, and a plurality of electric transportation equipment via a communication network,
A data management unit for managing travel history data including battery remaining amount, travel distance, position, and date and time collected from the plurality of electric transportation devices,
When the display information is requested via the communication network, the display information including information on a charging station where a predetermined electric transportation device can be reached from a predetermined position,
Obtaining the predetermined position and the remaining battery level of the predetermined electric transport device;
The travel history data corresponding to the predetermined position of the predetermined electric transport equipment is acquired from the data management unit,
The display based on the travel history data corresponding to the predetermined position of the predetermined electric transportation device, a remaining battery level of the predetermined electric transportation device, and charging station position information for managing positions of a plurality of charging stations. Information is generated and transmitted to the display terminal;
Management server for charging stand display system.

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