JP5300610B2 - Navigation device, facility search method, and facility search program - Google Patents

Description

  The present invention relates to a navigation device having a function of guiding a route to a destination, and more particularly, to a facility search method including equipment for charging a battery of an electric vehicle.

  An electric vehicle uses an electric motor driven by a battery as a power source. For this reason, electric vehicles are attracting attention as environmentally friendly next-generation vehicles because they emit less carbon dioxide and reduce noise than automobiles with internal combustion engines such as gasoline engines and diesel engines.

  Since an electric vehicle travels while consuming electric power stored in a battery, the battery needs to be charged if the remaining battery level is low. As electric vehicles become more widespread, a large number of facilities for charging batteries will be required. From such a viewpoint, Patent Document 1 proposes a navigation device that provides information suitable for an electric vehicle to a user. The navigation device of Patent Document 1 stores information regarding the presence or absence of a battery charging facility for an electric vehicle as facility data, and provides position information of the battery charging facility to the user.

JP 2001-215124 A

  As shown in Patent Document 1, the conventional navigation device stores facility data related to the presence / absence of the battery charging facility, and can search for the presence / absence of the battery charging facility alone. However, it is possible to achieve a user's purpose such as searching for a facility that can be charged while shopping, or searching for a facility that can be charged while eating. There is a lack of convenience for users because it does not have a function to search for facilities.

  An object of this invention is to solve such a subject and to provide the navigation apparatus, the facility search method, and the facility search program which can search the information regarding a charging equipment simultaneously in a facility search.

  The navigation device according to the present invention can be mounted on an electric vehicle using a battery as a power source, and includes an input means for receiving an instruction from a user, a storage means for storing facility data relating to a facility, and an instruction from the input means A facility search means for searching for facility data stored in the storage means, and a presentation means for presenting a search result screen searched for by the facility search means. A search instruction input for narrowing down and searching for facilities with battery charging facilities is included.

  Preferably, the facility search means narrows down the facility with the charging facility when the search instruction input on the search result screen is selected by the user, and the presenting means displays the narrowed-down facility on the search result screen. Present. Preferably, the navigation device further includes travel distance determination means for determining a travelable distance from the remaining battery capacity, and the facility search means narrows down and searches for facilities within the travelable distance. Preferably, the facility search means narrows down the equipment status of the charging facility, and the presenting means presents the equipment status of the charging facility on the search result screen. Preferably, the navigation device includes an acquisition unit that acquires information on a usage status of the charging facility from the outside, and the facility search unit narrows down the facilities including the charging facility based on the information on the usage status acquired by the acquisition unit. Search. Preferably, the presenting means presents an identification display on the search result screen so that the usage status of the charging facility can be determined. Preferably, the facility search means presents a search condition setting screen for setting a search condition for a charging facility to the user when a search instruction input on the search result screen is selected by the user, and the facility search means In accordance with the search condition set on the search condition setting screen, the facility equipped with the charging facility is narrowed down and searched. Preferably, the navigation device further includes search means for searching for a route to the destination when any of the facilities presented by the presentation means is set as the destination, and the search means includes the facility Facilities that are searched by the search means and that exist on the route are guided. Preferably, the search result screen displays, on a road map, a list display unit that displays at least a part of the searched facilities in a list, and a location of the facility selected from the facilities displayed in the list display unit. And a position display unit to be operated. Preferably, the search instruction input on the search result screen is selected by the user touching the screen.

  A facility search method in a navigation device that can be mounted on an electric vehicle powered by a battery according to the present invention includes a step of searching for a facility in response to a user input, and a step of displaying the searched facility on a search result screen. A search instruction input provided on the search result screen, and determining whether or not the search instruction input for narrowing down a facility having a battery charging facility from the searched facilities is selected And, when it is determined that the search instruction input has been selected, there are a step of performing a narrowed search for facilities provided with charging facilities, and a step of displaying the facility for which the narrowed search has been performed on the search result screen.

  Preferably, the facility search method further includes a step of determining a travelable distance from a remaining battery level, and the narrowing search of the facility provided with the charging facility searches for a facility within the travelable distance. Preferably, the narrow-down search searches for the facility status of the charging facility, and the facility status of the charging facility is presented on the search result screen. Preferably, the facility search method further includes a step of acquiring information on the usage status of the charging facility from the outside, and the narrowed search searches for a facility equipped with the charging facility based on the acquired information on the usage status of the charging facility. To do. Preferably, the facility search method further includes a step of presenting a search condition setting screen for setting a search condition for a charging facility to the user when a search instruction input on the search result screen is selected by the user. Searches for a facility with a charging facility according to the search condition set on the search condition setting screen. Preferably, the facility search method further includes a step of searching for a route to the destination when any one of the facilities presented on the search result screen is set as the destination, and the searched facility And guiding a facility existing on the route.

  The facility search program according to the present invention is executed by a navigation device that can be mounted on an electric vehicle using a battery as a power source, and searches for a facility in response to a user input, A step of displaying on a search result screen; and a search instruction input provided on the search result screen, wherein the search instruction input for narrowing down a facility having a battery charging facility from the searched facilities A step of determining whether or not the search instruction input has been selected; a step of performing a narrow search of facilities equipped with charging facilities when it is determined that the search instruction input has been selected; And a step of displaying.

  According to the present invention, when a facility search is performed, the facility provided with the charging facility can be narrowed down and searched, so that the user can easily search for the facility provided with the charging facility at the same time as searching for the target facility. .

It is a block diagram of the navigation apparatus which concerns on the Example of this invention. It is an example of the data structure of facility data. It is a functional block diagram of a facility search program. It is an example of the search result screen of a standard format. It is a flowchart which shows the facility search operation | movement of the navigation apparatus based on 1st Example of this invention. FIG. 6A is a display example of a search result screen when a facility search is performed, and FIG. 6B is a display example when a narrow-down search of facilities having charging facilities is performed from the searched facilities. It is an example of a display of the detailed information of a charging facility from a search result screen. It is a flowchart which shows the facility search operation | movement which concerns on 2nd Example of this invention. It is an example of the search result screen in the facility search operation | movement which concerns on 3rd Example of this invention. It is an example of the search result screen in the facility search operation | movement which concerns on 4th Example of this invention. It is a flowchart which shows the facility search operation | movement which concerns on the 5th Example of this invention. It is an example of the search condition setting screen used in the fifth embodiment. It is a flowchart which shows the facility search operation | movement which concerns on the 6th Example of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, a navigation device that can be mounted on an electric vehicle is illustrated.

  FIG. 1 is a block diagram showing a typical configuration of a navigation apparatus according to an embodiment of the present invention. The navigation device 10 is distributed from a bus interface (I / F) 20 that receives a signal related to the state of the vehicle from an in-vehicle bus, a GPS receiver 30 that receives a signal from a GPS satellite and detects the position of the vehicle, and a VICS center. A VICS receiver 40 that receives road traffic information, an input unit 50 that receives input from a user, a communication control unit 60 that performs data communication with an external device wirelessly or by wire, and a storage unit 70 that includes a storage medium such as a large-capacity hard disk A sound output unit 80 for outputting sound from the speaker 82, a display control unit 90 for displaying an image such as a road map on the display 92, a program memory 100 for storing a program, a data memory 110 for temporarily storing data, and a program It is configured to include a control unit 120 that controls each unit by executing.

  The bus interface 20 receives a detection signal from a self-contained navigation sensor (for example, a vehicle speed sensor, an acceleration sensor, a gyro sensor, etc.), a signal related to the remaining battery level, and provides this to the control unit 120. The VICS receiver 40 receives road traffic information and parking space availability information distributed from the VICS center side through optical beacons, radio beacons, FM multiplex broadcasting, and the like, and provides them to the control unit 120. The input unit 50 includes an operation panel 52 that enables input by touching the display 92, a voice input unit 54 that enables input by voice, and a remote controller 56.

  The storage unit 70 stores road map data necessary for navigation. The road map data includes link data for identifying roads, node data for identifying intersections, facility data for identifying POIs such as facilities, and the like. The link data includes road type, road name, width, regulation, coordinates of start node and end node, and the like. The intersection node includes information indicating a connection relationship with the start node and the end node of the link node and information such as an intersection type.

  The facility data further includes information for charging the battery of the electric vehicle. FIG. 2 shows an example of the data structure of facility data. The facility data 200 includes name data 210 including the name of the facility (for example, store name or branch name), position data 220 including latitude / longitude or address where the facility is located, and a genre (for example, restaurant, shopping center, parking) Genre data 230 indicating a car park, a transportation facility, an accommodation facility, an amusement facility, etc., polygon data 240 used when displaying the form of the facility, charging facility data 250 relating to the charging facility, and the like.

  Furthermore, the charging facility data 250 includes charging station information 251 indicating whether or not the facility has a charging station, identification information 252 identifying a charging station series or chain store, installed number information 253 indicating the number of charging stations installed, Equipment information 254 indicating rapid charging or normal charging, installation position information 255 indicating the installation position of the charging station in the facility, parking lot information 256 indicating whether the installation position is attached to the parking lot of the facility, and a charge indicating the charging fee Information 257, usage time information 258 indicating available time, privilege information 259 regarding a privilege and a discount, and the like are included. These charging facility data are referred to when searching for a facility having a charging facility.

  The program memory 100 includes an own vehicle position calculation program 102 that calculates the own vehicle position based on detection signals from the self-contained navigation sensor and the GPS receiver 30, and an optimum guidance route from the own vehicle position and other start positions to the destination. A guidance route guidance program 104 for searching and guiding this, a facility search program 106 for searching for facilities, and the like are included. The data memory 110 stores, for example, the road map data 112 read from the storage unit 70, the remaining battery capacity 114 obtained from the bus I / F 20, the searched facility data 200, and the like.

  FIG. 3 is a functional block diagram of the facility search program 106 of this embodiment. The facility search program 104 further relates to a charging facility from a facility search unit 300 that searches the facility data 200 in the storage unit 70 based on a search condition from the user, and from facilities searched by the facility search unit 300 in response to an instruction from the user. A charging facility search unit 310 that searches for information, a travel distance determination unit 320 that determines a travelable distance of the electric vehicle based on the remaining battery level obtained from the bus I / F 20, a facility search unit 300, and a charging facility search unit 310 And a search result creation unit 330 for creating the search results.

  The facility search unit 300 searches for a corresponding facility from a name, a genre, a telephone number, a peripheral facility, and the like according to an instruction from the user. The charging facility search unit 310 searches for a complex facility having a charging facility for a battery or a dedicated charging stand. The charging facility search unit 310 is executed when searching for a charging facility alone or, as will be described later, when a facility search is performed, the charging facility search unit 310 continues to search for charging facilities for the searched facility. When executed. When the charging facility search unit 310 is executed, the travel distance determination unit 320 determines the travelable distance of the host vehicle from the remaining battery level, and provides the determination result to the charging facility search unit 310.

  The search result creation unit 330 presents the search result information from the facility search unit 300 to the user, or provides the user with search result information when the charging facility is further refined from the facility search result. FIG. 4 is a standard format search result screen created by the search result creation unit 330 when a facility search is performed. The search result screen 340 includes a search condition display unit 342 that displays facility search conditions, a hit number display unit 344 that displays the number of facilities that hit the search conditions, and a plurality of facilities that hit the search conditions are arranged in a list. The list display unit 346 to be displayed, the position display unit 348 to display the position and detailed information corresponding to the selected facility in the list display unit 346, and the detailed information of the selected facility in the list display unit 346 are displayed. Detailed information key 350, charging facility consideration key 352 for executing a further search for charging facilities from the facility search, scroll key 354 for scrolling the facilities in the list display unit, return key 356, and completion key 358 for completing the facility search including.

  Next, the facility search operation of the navigation device according to the present embodiment will be described with reference to the flowchart of FIG. First, the user instructs facility search conditions via the input unit 50 (step S101). In response to the search result, the facility search unit 300 searches for the corresponding facility in response to the user input (step S102). The search result creation unit 330 uses the search result screen as shown in FIG. 4 to present the searched facility to the user (step S103).

  FIG. 6A is an example of a search result screen when a shopping center is searched as a facility. In the list display section 346, five shopping centers A, B, C, D, and E from 50 hits are displayed in the order of 50 sounds. Since the shopping center A in the list display unit 346 is selected on this screen, the position display unit 348 displays the position of the shopping center A on the road map.

  In the search result screen, if the user selects a desired facility and selects the completion key 358, a determination button as to whether or not to set the facility as a destination is displayed. When the determination button is selected, The destination is set for the facility (step S104). Then, the guidance route guidance program 104 searches for the optimum route to the facility (step S110) and starts its guidance.

  The charging facility search unit 310 monitors whether or not the charging facility consideration key 352 is further selected from the facility search result (step S105). The selection of the charging facility consideration key 352 is executed, for example, when the user touches the screen. When charging facility consideration key 352 is selected, charging facility search unit 310 narrows down and searches for facilities having charging facilities from the facilities searched by facility searching unit 300 (step S106). The charging facility search unit 310 refers to the charging facility data 250 in the facility data 200 shown in FIG. 2 and identifies whether or not the facility has a charging facility. The search result creation unit 330 presents a search result screen reflecting the search result from the charging facility search unit 310 to the user (step S107).

  FIG. 6B shows a screen when the charging facility considering key 352 is selected from the search state of FIG. 6A and the charging facility is searched. The number of hits is 15, and the list display unit 346 displays five cases of shopping centers B, C, D, F, and G having charging facilities. The shopping center B in the list display unit 346 is selected, and the position display unit 348 displays the position of the shopping center B on the road map.

  In the search result screen, if the user selects a desired facility and selects the completion key 358, a determination button as to whether or not to set the facility as a destination is displayed. When the determination button is selected, The destination is set for the facility (step S108). Then, the guidance route guidance program 104 searches for the optimum route to the facility (step S110), and the guidance is performed.

  6B, when the detailed information key 350 is selected on the search result screen for the facility having the charging facility shown in FIG. 6B, the search result creating unit 330 displays the charging facility data 250 included in the facility data 200. The read charging facility data 250 can be presented to the user in a predetermined format. For example, as illustrated in FIG. 7, when the detailed information key 350 is selected by the user in a state where the shopping center B of the list display unit 346 is selected, the position display unit 348 displays the charging facility of the shopping sensor B as The number of charging stations installed, charge, available time, etc. are displayed.

  As described above, according to the above-described embodiment, the user can easily find a facility that can be charged while achieving the purpose of the facility search.

  Next, a second embodiment of the present invention will be described. In the second embodiment, when the user selects the charging facility consideration key 352 on the search result screen, the travel distance determination unit 320 determines the travelable distance of the electric vehicle, and includes the charging facility based on the determination result. Search refined facilities. FIG. 8 is an operation flowchart of the second embodiment of the present invention.

  As in the case of the first embodiment, when a facility is searched in response to a user input, a search result screen as shown in FIG. 6A is displayed (step S201), and the user then charges the charging facility. When the consideration key 352 is selected (step S202), the travel distance determination unit 320 acquires information on the remaining amount of the battery via the bus I / F 20 (step S203), and the electric vehicle travels according to a previously prepared calculation formula. A possible distance is determined (step S204). Based on the determined travelable distance, the charging facility search unit 310 narrows down and searches for facilities within the travelable distance provided with the charging facility (step S205). Next, the search result creation unit 330 creates a search result screen for the facility that has been narrowed down and displays it (step S206). As in the case of the first embodiment, the user can browse the detailed information of the found facility or set the facility as the destination.

  According to the second embodiment, since the charging facility within the travelable distance is automatically searched from the remaining battery level, the user selects a desired facility from the reachable facilities as the destination. can do. In the second embodiment, the travelable distance is determined from the remaining battery level. However, in addition to this, a range in which the user specifies or searches the travelable distance (for example, 20 km centered on the own vehicle position). Etc.) may be input.

  Next, a third embodiment of the present invention will be described. In the third embodiment, the equipment state of the charging facility is identified and displayed. There are two types of charging stations: a normal charging station and a quick charging station. The normal charging stand is for charging a battery using a household outlet and can be easily charged, but takes a long time to charge. On the other hand, since the quick charging stand uses a 200V AC power supply, the battery can be charged in a short time, but a dedicated plug or equipment is required.

  In the third embodiment, the charging facility search unit 310 further determines whether the charging station is a normal charging station or a quick charging station when the searched facility includes a charging station. For example, it is determined by referring to the facility information 254 of the charging facility data 250 shown in FIG. The result determined by the charging facility search unit 310 is transmitted to the search result creation unit 330, and the search result determination unit 330 identifies and displays whether the facility corresponds to normal charging or quick charging.

  FIG. 9 shows an example of a search result screen of the third embodiment. In the facility of the list display unit 346, a mark N indicating a normal charging station and a mark (rapid) indicating a quick charging station are displayed. These identification marks may be attached to the facility icon displayed on the position display unit 348. In addition to this, the mark display method can also be distinguished by, for example, distinguishing the facility where only the normal charging station is installed in blue, the facility including only the quick charging station in yellow, and the facility including both in red. good.

  In addition, there are cases in which an electric vehicle does not support a quick charging stand due to differences in vehicle types and optional items and cannot be used. For this reason, you may set beforehand whether the own vehicle is applicable to a quick charge stand. In this case, the charging facility search unit 310 gives priority to the items set by the user so that the corresponding facility is preferentially displayed on the list display unit 346.

  As described above, according to the third embodiment, the facility status of the charging station can be determined at a glance, so that if the stay in the facility is short, the facility equipped with the quick charging station can be easily found. be able to. In addition, if the vehicle is not equipped with a dedicated connector, it is possible to prevent a facility equipped with a quick charging stand from being selected.

  Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, when the charging facility consideration key 352 is selected, the vacant information or the usage status of the charging facility is presented to the user. For example, road traffic information distributed by a VICS center or the like includes vacant information on parking lots in addition to real-time traffic jam information and accident information. In the future, with the popularization of electric vehicles, it is also expected that vacant information of charging facilities will be distributed.

  The control unit 120 analyzes the road traffic information received by the VICS / FM multiplex receiver 40 and extracts vacancy information of the charging facility included in the road traffic information. When charging facility consideration key 352 is selected by the user, charging facility search unit 310 determines the availability information of the facility provided with the charging facility based on the received availability information of the charging facility. The search result creation unit 330 can cause the list display unit 346 to preferentially display the facilities that have no waiting time and can use the immediate charging facility.

  FIG. 10 is a display example of a search result screen according to the fourth embodiment. The list display unit 346 is provided with an available mark if the charging facility is immediately available, and is provided with an unavailable mark if the charging station is in use or cannot be used immediately. Furthermore, by selecting the detailed information key, it is possible to present information such as the waiting time of the charging facility that has been disabled.

  According to the fourth embodiment, the user can determine whether the battery can be charged within the time spent in the facility by grasping the usage status of the charging station before the facility arrives. The waiting time of the charging station can be avoided.

  Next, a fifth embodiment of the present invention will be described. In the fifth embodiment, when the user selects the charging facility consideration key 352, further detailed search condition setting of the charging facility is enabled. FIG. 11 is an operation flowchart of the fifth embodiment. In response to the user input, a facility search result screen that is a search result of the facility is displayed (step S301). Next, when the user selects the charging facility consideration key 352 (step S302), the charging facility search unit 310 The search condition setting screen is displayed on the display (step S303). The search condition setting screen enables a search for charging facilities according to the user's wishes.

  FIG. 12 shows an example of a charging facility search condition setting screen. The search condition setting screen 400 shown in the figure displays check boxes for setting conditions such as the number of installed charging stations, facilities, installation positions (whether the facility parking lot is outside the parking lot), waiting time, or the like. . The user sets the search condition by setting the check box and selecting the enter button.

  The charging facility search unit 310 narrows down the charging facilities based on the search conditions set on the search condition setting screen (step S305), and the search result creation unit 330 displays the search result screen. According to the fifth embodiment, it is possible to easily search for a charging facility that meets the user's wishes.

  Next, a sixth embodiment of the present invention will be described. In the sixth embodiment, when the facility is set as the destination, the facility including the charging station on the guidance route to the destination is displayed. In the case of an electric vehicle, the remaining battery level may vary depending on the driving state, and the distance that can be driven may decrease. Initially, even if charging is considered at the facility at the destination, it is assumed that charging is forced on the way.

  In response to the user input, a facility search result screen, which is a search result of the facility, is displayed. Next, the user selects the charging facility consideration key 352, the facility search is performed, and the facility search result screen is displayed. When the user sets a desired facility among the searched facilities as a destination, the guidance route guidance program 104 searches for an optimum guidance route from the vehicle position to the destination facility. The guidance route guidance program 104 uses the search result of the facility provided with the charging facility searched by the charging facility search unit 310, and guides another charging facility on the guidance route when guiding the guidance route to the destination. The provided facilities are displayed and other charging facilities are presented to the user.

  FIG. 13 is an example of a route guide map to the destination according to the sixth embodiment. For example, it is assumed that a search result screen as shown in FIG. 6B is presented to the user, and the user sets the shopping center B as the destination. The guidance route guidance program 104 searches for a guidance route R from the vehicle position M to the destination. Further, the program 104 searches for shopping centers C and E having charging facilities along the guide route R. As the vehicle travels, guidance to the destination is started, and shopping centers C and E equipped with charging facilities are displayed and guided along the way. In addition, shopping centers D, F, and G having charging facilities that are located away from the guide route R are displayed. At this time, shopping centers C and E are highlighted more than shopping centers D, F, and G.

  In addition, when a guidance route to the destination is set, the charging facility search unit 310 can search for a charging facility along the guidance route. In this case, the list display unit 346 on the search result screen displays the facilities having the charging facility in the order from the own vehicle position. Further, as in the case of FIG. 13, facilities along the guidance route R may be highlighted.

  The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the specific embodiment, and various modifications can be made within the scope of the present invention described in the claims. Deformation / change is possible.

10: Navigation device 20: Bus I / F
30: GPS receiver 40: VICS / FM multiplex receiver 50: input unit 60: communication control unit 70: storage unit 80: audio output unit 90: image display unit 100: program memory 110: data memory 120: control units AG : Shopping center and its mark M: Own vehicle position mark R: Guide route

Claims (20)

A navigation device that can be mounted on an electric vehicle powered by a battery,
Input means for receiving instructions from the user;
Storage means for storing facility data relating to the facility;
Facility search means for searching facility data stored in the storage means based on an instruction from the input means;
Presenting means for presenting a search result screen searched by the facility search means,
The search result screen includes a search instruction input for narrowing down a facility having a battery charging facility from the searched facilities.
Navigation device. When the search instruction input on the search result screen is selected by the user, the facility search means narrows down the facilities having charging facilities, and the presenting means presents the narrowed-down facilities on the search result screen. The navigation device according to claim 1. The navigation device according to claim 2, further comprising a travel distance determining unit that determines a travelable distance from a remaining battery capacity, wherein the facility search unit narrows down a facility within the travelable distance. . The navigation apparatus according to claim 2, wherein the facility search unit narrows down the facility status of the charging facility, and the presentation unit presents the facility status of the charging facility on the search result screen. The navigation device includes an acquisition unit that acquires information on a usage status of the charging facility from the outside, and the facility search unit narrows down a facility including the charging facility based on the information on the usage status acquired by the acquisition unit. The navigation device according to claim 2. The navigation device according to claim 5, wherein the presenting unit presents an identification display on the search result screen so that a usage status of the charging facility can be determined. When the search instruction input on the search result screen is selected by the user, the facility search means presents a search condition setting screen for setting a search condition for a charging facility to the user, and the facility search means The navigation apparatus according to claim 1, wherein the facility including the charging facility is narrowed down and searched according to the search condition set on the condition setting screen. The navigation device further includes search means for searching for a route to the destination when any of the facilities presented by the presentation means is set as the destination, and the search means includes the facility search means. The navigation apparatus according to claim 1, wherein the navigation apparatus guides a facility that has been searched by the facility and exists on the route. The search result screen includes a list display unit that displays at least a part of the searched facilities in a list, and a position that displays the position of the facility selected from the facilities displayed in the list display unit on the road map. The navigation device according to claim 1, further comprising a display unit. The navigation device according to claim 2 or 7, wherein a search instruction input on the search result screen is selected by a user touching the screen. A facility search method in a navigation device that can be mounted on an electric vehicle powered by a battery,
Searching for facilities in response to user input;
Displaying the searched facilities on the search result screen;
A step of determining whether or not the search instruction input provided on the search result screen is a search instruction input for narrowing down a facility having a battery charging facility from the searched facilities. When,
When it is determined that the search instruction input is selected, performing a refinement search of facilities equipped with charging facilities;
Displaying the facility on which the refined search has been performed on the search result screen;
The facility search method which has. The facility search method further includes a step of determining a travelable distance from a remaining battery capacity, and the search for a facility including the charging facility searches for a facility within the travelable distance. Facility search method. The facility search method according to claim 11, wherein the narrowing search searches for a facility status of a charging facility, and the facility result of the charging facility is presented on the search result screen. The facility search method further includes the step of acquiring information on the usage status of the charging facility from the outside, and the narrowing search searches for a facility equipped with the charging facility based on the acquired information on the usage status of the charging facility. The facility search method according to claim 11. The facility search method further includes a step of presenting a search condition setting screen for setting a search condition for a charging facility to the user when a search instruction input on the search result screen is selected by the user. The facility search method according to claim 11, wherein a facility having a charging facility is searched according to a search condition set on the search condition setting screen. The facility search method further includes a step of searching for a route to the destination when any of the facilities presented on the search result screen is set as a destination, and the searched facility and the route The facility search method according to claim 11, further comprising a step of guiding a facility existing above. A facility search program executed by a navigation device that can be mounted on an electric vehicle powered by a battery,
Searching for facilities in response to user input;
Displaying the searched facilities on the search result screen;
A step of determining whether or not the search instruction input provided on the search result screen is a search instruction input for narrowing down a facility having a battery charging facility from the searched facilities. When,
When it is determined that the search instruction input is selected, performing a refinement search of facilities equipped with charging facilities;
Displaying the facility on which the refined search has been performed on the search result screen;
A facility search program. The facility search program further includes a step of determining a travelable distance from a battery remaining amount, and the narrowing search of the facility provided with the charging facility searches for a facility within the travelable distance. Facility search program. The facility search program according to claim 17, wherein the narrowing search searches for a facility status of a charging facility, and the facility result of the charging facility is presented on the search result screen. The facility search program further includes a step of acquiring information on the usage status of the charging facility from the outside, and the narrowing search searches for a facility equipped with the charging facility based on the acquired information on the usage status of the charging facility. The facility search program according to claim 17.

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