Guidance system for electric motor vehicles

Abstract

A guidance system for an electric motor vehicle is provided. A guidance system (10) for an electric motor vehicle (20) includes a registration unit (43) that registers, for an electric motor vehicle (20) capable of replacing a battery, a replacement site (50) for a replacement battery (21B); a presumption unit (33B) that presumes a travelable distance of the electric motor vehicle (20) based on a remaining amount of the battery of the electric motor vehicle (20); and a display unit (33H) that displays, on map information, a replacement site (50) that is within the presumed travelable distance of the electric motor vehicle (20) among the replacement sites (50) for the replacement battery (21B) registered in the registration unit (43).

Description

TECHNICAL FIELD

[0001] The present application relates to a guidance system for a motor vehicle. BACKGROUND

[0002] For example, in Japanese Patent Application Publication No. 2017-91426, with respect to a battery pack of a motor vehicle such as an electric bicycle, a charging device capable of replacing a battery pack with a remaining capacity remaining little with a charged battery pack, and a reservation management system that makes a reservation for replacement of a battery pack in such a charging device are disclosed. The reservation management system disclosed in Japanese Patent Application Publication No. 2017-91426 searches for a charging device that can be reserved in a case where it is determined that a reservation for a certain charging device cannot be made, and transmits information about the charging device to an information terminal in a case where there is a charging device that can be reserved. According to Japanese Patent Application Publication No. 2017-91426, the information about the charging device can include navigation up to the charging device.

[0003] In Japanese Patent Application Publication No. 2010-191636, a battery replacement system is disclosed, which is a replacement system for a battery of a motor vehicle such as an electric bicycle, and is provided with an IC chip installed in a battery and capable of being written with historical data such as the number of times of charging, and a value determination device that determines the difference in value between a detached battery and a battery to be replaced based on the history written to the IC chip.

[0004] In Japanese Patent Application Publication No. 2020-102025 and Japanese Patent Application Publication No. 2014-39388, a system that promotes charging of a storage battery mounted on a vehicle with electric power generated by using renewable energy is disclosed. According to the system disclosed in Japanese Patent Application Publication No. 2020-102025, for this purpose, a coupon that can be used in a store provided in the vicinity of a power supply device that can be charged with electric power generated by using renewable energy is issued. According to the system disclosed in Japanese Patent Application Publication No. 2014-39388, the amount of storage based on electric power generated by using renewable energy and the amount of storage based on electric power from the system are managed separately.

[0005] PRIOR ART DOCUMENTS

[0006] Patent Document 1: Japanese Patent Application Publication No. 2017-91426

[0007] Patent Document 2: Japanese Patent Application Publication No. 2010-191636

[0008] Patent Document 3: Japanese Patent Application Publication No. 2020-102025

[0009] Patent Literature 4: Japanese Patent Application Publication No. 2014-39388 SUMMARY

[0010] In the system disclosed in Japanese Patent Application Publication No. 2017-91426, it is possible that a battery replacement site cannot be reached within the range of the remaining capacity of the battery pack.

[0011] The guidance system for an electric motor vehicle according to the present embodiment is a guidance system for an electric motor vehicle that includes a registration unit that registers a battery replacement site at which a battery of an electric motor vehicle is replaced, a prediction unit that predicts a travelable distance of the electric motor vehicle based on a battery remaining amount of the electric motor vehicle, and a display unit that displays, on map information, a battery replacement site that is within the predicted travelable distance of the electric motor vehicle, among the battery replacement sites registered in the registration unit.

[0012] According to the guidance system for an electric motor vehicle described above, a user of the electric motor vehicle can know a battery replacement site that is predicted to be able to be reached within the range of the battery remaining amount. Therefore, it is possible to reduce the possibility that the battery replacement site cannot be reached within the range of the battery remaining amount.

[0013] The guidance system for an electric motor vehicle can also include a destination input unit into which a destination to which the electric motor vehicle is to travel is input, and a selection unit that selects a battery replacement site based on the predicted travelable distance of the electric motor vehicle and the destination input into the destination input unit. The battery replacement site can include a battery replacement site that has a battery replacement site that is charged at least in part with power generated by a renewable energy source, and the registration unit can register a battery replacement site that has a battery replacement site that is charged with power generated by a renewable energy source as a priority facility. The selection unit can be configured to preferentially select the priority facility.

[0014] The guidance system for an electric motor vehicle can also include a price setting unit that sets a lending price of a battery replacement site. The price setting unit can set a lending price of a battery replacement site that is charged with a large proportion of power generated by a renewable energy source to be lower than a lending price of a battery replacement site that is charged with a small proportion of power generated by a renewable energy source. The display unit can display the lending price of the battery replacement site. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a diagram of the configuration of a guidance system for an electric motor vehicle according to an embodiment.

[0016] Figure 2 FIG. 2 is a flowchart illustrating one example of route selection by the guidance system.

[0017] Figure 3 FIG. 3 is a diagram of route selection by the guidance system. DETAILED DESCRIPTION

[0018] An embodiment of the guidance system for an electric motor vehicle disclosed herein will be described below with reference to the accompanying drawings. The embodiment described herein is obviously not intended to particularly limit the present application. In the present application, unless particularly mentioned, the embodiment described herein is not limited thereto. In addition, the same symbols are appropriately added to components, parts that play the same role, and repetitive explanation is appropriately omitted.

[0019] Figure 1 is a configuration diagram of a guidance system 10 for an electric motor vehicle (hereinafter, also simply referred to as guidance system 10) according to an embodiment. The guidance system 10 is a system that guides an electric motor vehicle 20 capable of replacing a battery to a battery replacement site 50. Here, the guidance system 10 is a system that refers to an input destination of the electric motor vehicle 20 and a remaining amount of the battery 21 and guides the electric motor vehicle 20 to a suitable battery replacement site 50. The guidance system 10 is realized by, for example, a server of a client-server system. However, the guidance system 10 can also be realized by cloud computing.

[0020] As Figure 1 indicated, the guidance system 10 according to the embodiment includes the electric motor vehicle 20, a user terminal 30, a server device 40, and the battery replacement site 50. In the guidance system 10 according to the embodiment, the user terminal 30 carried by the user 1 is configured to be able to communicate with the electric motor vehicle 20 and the server device 40, and mediate between the server device 40 and the electric motor vehicle 20. However, the electric motor vehicle 20 itself can also be configured to be able to perform the functions of the user terminal 30. In this case, the user terminal 30 can also not be used. Alternatively, the electric motor vehicle 20 can also be configured to neither communicate with the server device 40 nor communicate with the user terminal 30. In this case, the user 1 can manually input information displayed on the electric motor vehicle 20 to the user terminal 30. Furthermore, the functions assumed by the electric motor vehicle 20, the user terminal 30, the server device 40, and the battery replacement site 50 can also be interchanged.

[0021] The electric motor vehicle 20 is, for example, an electrically assisted bicycle that is assisted in propulsion by a motor driven by the battery 21. However, as for the kind of the electric motor vehicle 20, there is no particular limitation as long as it is an electric motor vehicle capable of replacing the battery 21. The electric motor vehicle 20 can also be, for example, an electric motorcycle. The electric motor vehicle 20 can be a rental motor vehicle that the user rents, or a motor vehicle owned by the user 1.

[0022] As Figure 1As shown, the electric motor vehicle 20 is provided with a battery 21, a remaining amount acquisition device 22, an on-board computer 23, a display device 24, and a mode switching device 25. The battery 21 is, for example, a lithium ion secondary battery. However, the type of the battery 21 is not particularly limited. The remaining amount acquisition device 22 acquires the remaining amount of the battery 21. The information of the remaining amount of the battery 21 acquired by the remaining amount acquisition device 22 is at least temporarily stored in the on-board computer 23.

[0023] The display device 24 displays the remaining amount of the battery 21 and other information related to the electric motor vehicle 20. The display device 24 is, for example, provided with a small liquid crystal display. In the display device 24, in addition to the remaining amount of the battery 21, for example, a mode of electric assist is also displayed. The mode of electric assist includes, for example, an economy mode, a standard mode, a strong mode of electric assist, and the like. The mode switching device 25 is, for example, provided with an operation button that switches the mode of electric assist. However, the electric motor vehicle 20 can also be an electric motor vehicle that does not have the display device 24 and the mode switching device 25.

[0024] The on-board computer 23 is configured to be able to communicate with the user terminal 30 and the server device 40. The electric motor vehicle 20 is recognized by the server device 40 through the communication of the on-board computer 23 with the server device 40. Here, the on-board computer 23 is provided with an authentication section 23A that authenticates the user terminal 30 as a destination of transmission and reception of information, and an information transmission section 23B that transmits information including the information of the remaining amount of the battery 21 to the user terminal 30. In the case where the electric motor vehicle 20 is a rented motor vehicle, the authentication of the user terminal 30 by the authentication section 23A is a time-limited authentication. In the case where the electric motor vehicle 20 is the property of the user 1, the authentication of the user terminal 30 by the authentication section 23A can also be a fixed authentication. The on-board computer 23 can also transmit information directly to the server device 40 without going through the user terminal 30.

[0025] The user terminal 30 is, for example, a smartphone, a tablet terminal, or the like used by the user 1. It is preferable that the user terminal 30 be configured to be able to be carried by the user 1. The user terminal 30 is provided with an operation screen 31 and a computer 32. The operation screen 31 is, for example, a touch panel. However, the user terminal 30 can also be operated not through the operation screen 31 but through a mechanical button or the like, or in addition to the operation screen 31 through a mechanical button or the like. Here, the computer 32 constitutes a processing section 33 that processes, for example, information input to the operation screen 31, information received from the electric motor vehicle 20, and information received from the server device 40 through an installed application software, and transmits the information to the server device 40.

[0026] The processing section 33 includes a battery level reception section 33A, a travelable distance estimation section 33B, a position information acquisition section 33C, a destination input section 33D, a reservation section 33E, an information transmission section 33F, an information reception section 33G, and a display section 33H. The battery level reception section 33A receives information on the level of the battery 21 acquired by the level acquisition device 22 of the motor-driven vehicle 20 from the motor-driven vehicle 20. However, the user 1 can also input information on the level of the battery 21 to the user terminal 30 using the operation screen 31.

[0027] The travelable distance estimation section 33B estimates the travelable distance of the motor-driven vehicle 20 based on the battery level of the motor-driven vehicle 20. The travelable distance estimation section 33B can also be provided to the motor-driven vehicle 20. In this case, the user terminal 30 receives information on the estimated travelable distance of the motor-driven vehicle 20 from the motor-driven vehicle 20. Alternatively, the user 1 inputs information on the estimated travelable distance of the motor-driven vehicle 20 to the user terminal 30. Alternatively, the function of the travelable distance estimation section 33B can also be assumed by the server device 40.

[0028] Here, the estimated travelable distance of the motor-driven vehicle 20 refers to a distance estimated to be able to travel by accepting electric power generated by discharging of the battery 21 as electric assist. The estimated travelable distance of the motor-driven vehicle 20 can also differ depending on the mode of the electric assist. In the case of an electric assist bicycle, even after becoming unable to travel by accepting electric assist, the user 1 can travel by pedaling the bicycle. In the case of the motor-driven vehicle 20 that cannot travel without the battery 21, the estimated travelable distance of the motor-driven vehicle 20 refers to a distance estimated to be able to travel by the motor-driven vehicle 20 accepting discharging of the battery 21.

[0029] The position information acquisition section 33C acquires position information of the user terminal 30 on a map, for example, using a GPS (Global Positioning System). The current position of the user terminal 30 is determined by the position information acquisition section 33C. The destination to which the motor-driven vehicle 20 is to travel is input to the destination input section 33D. The destination can be input, for example, by selecting a location on a map or by inputting an address, a name, or the like. The method of inputting the destination is not particularly limited. In the present embodiment, whether or not the destination to which the motor-driven vehicle 20 is to travel is arbitrarily decided by the user 1.

[0030] In the reservation unit 33E, the replacement battery 21 at the battery replacement site 50 can be reserved. Hereinafter, in the case where it is necessary to distinguish, the battery installed in the electric motor vehicle 20 in use is denoted by the symbol 21A, and the replacement battery is denoted by the symbol 21B. In the present embodiment, the battery 21 is a rental battery that is renewed to a fully charged battery by replacement at the battery replacement site 50. In each reservation of the reservation unit 33E, one of the plurality of battery replacement sites 50 is selected. The selected battery replacement site 50 is described later.

[0031] The information transmission unit 33F transmits information to the server device 40. In the information transmitted to the server device 40, for example, the current location information of the user terminal 30, the destination information of the electric motor vehicle 20, the information of the estimated travelable distance of the electric motor vehicle 20, the reservation information of the replacement battery 21B, and the like are included. The information reception unit 33G receives information from the server device 40. In the information received from the server device 40, for example, the information of the recommended route of the electric motor vehicle 20 including the recommended battery replacement site 50, the warning information, and the like are included.

[0032] The display unit 33H displays, in the map information, the battery replacement site 50 within the range of the estimated travelable distance of the electric motor vehicle 20, among the battery replacement sites 50 registered by the site registration unit 43 (described later) of the server device 40. In addition, the display unit 33H displays the place of the electric motor vehicle 20 or the place of the user 1 in the map information. Here, the place of the user 1 is estimated to be the place of the user terminal 30. The display unit 33H displays the recommended battery replacement site 50 and the recommended route selected in accordance with the current location of the user terminal 30 or the electric motor vehicle 20, the destination of the electric motor vehicle 20, and the estimated travelable distance of the electric motor vehicle 20. Here, the display unit 33H displays the above-described information on the operation screen 31. Here, the display unit 33H also displays the lending price of the replacement battery 21B. The display unit 33H can also display information other than the above-described information.

[0033] The server device 40 manages the guidance system 10. The server device 40 can be realized by a single computer or by cooperation of a plurality of computers. The server device 40 has, for example, an I / F, a CPU, a ROM, and a RAM. As shown in FIG. 6, the server device 40 has an information reception unit 41, an information transmission unit 42, a site registration unit 43, a site selection unit 44, a route selection unit 45, a price setting unit 46, a reservation reception unit 47, a site management unit 48, and a warning unit 49. The server device 40 can have other processing units, but the illustration and the description thereof are omitted here. Figure 1

[0034] ​The information receiving section 41 receives information such as the current location of the user terminal 30 or the electric motor vehicle 20, the destination of the electric motor vehicle 20, the estimated travel distance of the electric motor vehicle 20, the reservation information of the replacement battery 21B, and the like from the user terminal 30 or the electric motor vehicle 20. The information transmitting section 42 transmits information such as the recommended route of the electric motor vehicle 20 including the recommended battery replacement site 50, warning information, and the like to the user terminal 30, for example.

[0035] The battery replacement site 50 is registered in the site registration section 43. The number of the battery replacement site 50 is plural. Here, the site registration section 43 registers the battery replacement site 50 having the replacement battery 21B charged with the electric power generated by the renewable energy as a priority facility. The battery replacement site 50 includes the battery replacement site 50 having at least a part of the replacement battery 21B charged with the electric power generated by the renewable energy, and the replacement battery 21B includes at least a part of the replacement battery 21B charged with the electric power generated by the renewable energy.

[0036] The site selection section 44 selects the battery replacement site 50 in which the replacement battery 21B is replaced, based on the travel distance of the electric motor vehicle 20 estimated by the travel distance estimation section 33B, the destination input to the destination input section 33D, and the current position of the electric motor vehicle 20 or the user terminal 30. In the case where the user 1 does not input the destination of the electric motor vehicle 20, the recommended battery replacement site 50 can not be selected. In this case, the display section 33H can display the battery replacement site 50 within the estimated travel distance of the electric motor vehicle 20 among the battery replacement sites 50 registered in the site registration section 43, but not display the recommended battery replacement site 50 therefrom.

[0037] In the present embodiment, the site selection section 44 is configured to preferentially select a priority facility that has the replacement battery 21B charged with power generated by a renewable energy source. The site selection section 44 can be configured, for example, to search for a battery replacement site 50 through which the electric motor vehicle 20 can reach the destination, and select a priority facility if it is included in the battery replacement site 50. However, an increase in distance or the like due to a detour to the priority facility can also be taken into consideration. The selection procedure by which the battery replacement site 50 is selected is not particularly limited as long as the electric motor vehicle 20 can reach the destination. Further, with respect to "preferentially selecting the battery replacement site 50", in addition to guiding the user 1 to the selected battery replacement site 50, for example, it also includes preferentially displaying the selected battery replacement site 50, or displaying it in such a manner that the selected battery replacement site 50 is recognized as a recommended battery replacement site. The route selection section 45 selects a route to the destination that passes through the recommended battery replacement site 50 or the reserved battery replacement site 50.

[0038] In the price setting section 46, the lending price of the replacement battery 21B is set. In the present embodiment, the price setting section 46 sets the lending price of the replacement battery 21B that has a large proportion of power charged with power generated by a renewable energy source to be cheaper than the replacement battery 21B that has a small proportion. Here, the lending price can refer to the unit price per predetermined amount of power, and the amount of power can refer to the difference between the amount of charge of the replacement battery 21B and the remaining amount of the returned battery 21A. In the price setting section 46, the user 1 can be given other rewards instead of a discount on the lending price. The lending price can be the actual price after the rewards are subtracted as such. As the rewards, for example, a coupon for power or other goods is cited. The coupon can be a paper coupon or an electronic coupon.

[0039] The reservation reception section 47 receives the reservation of the replacement battery 21B by the user 1 through the user terminal 30. The site management section 48 manages the power generation device 51, the charging device 52, and the like of the battery replacement site 50 via the management device 53 of the battery replacement site 50.

[0040] Warning unit 49 sends a warning to user terminal 30, for example, if the electric motor vehicle 20 may be unable to reach the selected battery replacement station 50 due to reasons such as the battery 21A being consumed more than expected or the user 1 selecting a route other than the recommended route. In this embodiment, server device 40 monitors the route of electric motor vehicle 20 and the remaining battery 21A in real time. The warning content of warning unit 49 is not particularly limited. Warning unit 49 may also send information about the battery replacement station 50 reselected by station selection unit 44 to user terminal 30. Warning unit 49 may also send a message to user terminal 30 urging the user to change the electric assist mode to a mode that consumes less power. In cases where electric motor vehicle 20 can travel even without battery 21, such as an electric-assisted bicycle, warning unit 49 may also display the distance and route that may require autonomous travel. In this case, warning unit 49 may also display the difficulty of autonomous travel, such as the elevation difference of the route.

[0041] like Figure 1 As shown, one example of a battery swapping station 50 includes a power generation device 51, a charging device 52, and a management device 53 for managing the power generation device 51 and the charging device 52. However, some or all of the battery swapping stations 50 may not include a power generation device 51. The battery swapping station 50 only needs to have a charging device 52 capable of charging multiple batteries 21 and a management device 53 for managing the charging device 52. For example, when using system power, the battery swapping station 50 may also be installed in commercial facilities, etc.

[0042] The power generation device 51 can preferably be a device that generates electricity using renewable energy sources, such as a solar power generation device or a wind power generation device. Considering power transmission efficiency, the charging device 52 is preferably located near the power generation device 51. Here, the charging device 52 has multiple charging ports 52A, each capable of charging a battery 21. The charging device 52 is managed by a management device 53 and configured to allow the removal of a scheduled replacement battery 21B from the charging port 52A. The management device 53 is, for example, a computer. Used batteries 21A can be installed into an empty or designated charging port 52A. However, the charging device 52 may not be connected to the management device 53. The charging device 52 can also be managed by an operator (e.g., a staff member handling battery lending) who receives information from the management device 53.

[0043] The following describes the flow of route guidance in a case where the user 1 has input a destination of the electromotive vehicle 20, with reference to a flowchart. In a case where a destination of the electromotive vehicle 20 has not been input, the display section 33H of the guidance system 10 can also display, on the map information, only the battery exchange sites 50 registered in the site registration section 43, among the battery exchange sites 50, that are within the range of the estimable travel distance of the electromotive vehicle 20 estimated by the estimable distance estimation section 33B. Further, the display section 33H can also display the battery exchange sites 50 that are outside the range of the estimable travel distance of the electromotive vehicle 20. In this case, the display section 33H displays the battery exchange sites 50 that are outside the range of the estimable travel distance of the electromotive vehicle 20 in a manner distinguishable from the battery exchange sites 50 that are within the range.

[0044] Figure 2 is a flowchart showing one example of route selection by the guidance system 10. As shown in Figure 2 Step S10, the remaining amount of the battery 21A and the estimable travel distance of the electromotive vehicle 20 are displayed on the user terminal 30, for example, in accordance with an operation of starting guidance by the user 1. In step S20, the user 1 inputs a destination of the electromotive vehicle 20. The order of step S10 and step S20 can also be reversed.

[0045] In the following step S30, it is determined whether the input destination can be reached without replacement of the battery 21A. In a case where it is determined that the destination can be reached without replacement of the battery 21A (in a case where the result of step S30 is "Yes"), the guidance system 10 guides a route to the destination in step S41. When the electromotive vehicle 20 reaches the destination, the guidance system 10 ends the guidance in step S50.

[0046] In a case where it is determined in step S30 that the destination cannot be reached without replacement of the battery 21A (in a case where the result of step S30 is "No"), the guidance system 10 displays, in step S42, the battery exchange sites 50 estimated to be reachable with the remaining amount of the battery 21A as candidates for relay sites on the user terminal 30. At this time, the guidance system 10 can also display the battery exchange sites 50 registered as priority facilities (here, the battery exchange sites 50 that have the replacement battery 21B charged with power generated by renewable energy) in a manner distinguishable from other battery exchange sites. The guidance system 10 can also cause the user terminal 30 to display the lending price of the replacement battery 21B, or other kinds of rewards. The guidance system 10 can also cause the user terminal 30 to display traffic information such as congestion conditions of roads.

[0047] In step S43, the battery exchange site 50 as a relay is selected by the user 1. Alternatively, in a case where the user 1 entrusts the selection of the battery exchange site 50 to the guidance system 10, the battery exchange site 50 halfway can also be selected by the guidance system 10. In step S43, the reservation of the replacement battery 21B can also be completed. The selected battery exchange site 50 can be one or a plurality of sites.

[0048] Figure 3 is a schematic view of the route selection by the guidance system 10. As shown in Figure 3 the guidance system 10 recommends the first battery exchange site 50A as a relay to the user 1 in a case where it is determined that the electric motor vehicle 20 cannot reach the destination 60 without the replacement of the battery 21A. In this example, the second battery exchange site 50B is not a battery exchange site 50 that possesses the replacement battery 21B charged with the electric power generated by the power generation using the renewable energy. Therefore, the second battery exchange site 50B is not recommended by the guidance system 10. In addition, in this example, the third battery exchange site 50C is located in a direction different from the direction to the destination 60. Therefore, the third battery exchange site 50C is not recommended by the guidance system 10.

[0049] In step S44, the route guidance until the battery exchange site 50A as a relay is started. When the electric motor vehicle 20 reaches the selected battery exchange site 50A, the battery 21 is replaced in step S45. At this time, which replacement battery 21B should be accepted (which replacement battery 21B is reserved in a case where the reservation is made) can also be displayed in the user terminal 30.

[0050] After the replacement of the battery 21, the route guidance until the next destination (the final destination or the next relay) is started in step S46. In this case, the guidance system 10 also ends the guidance in step S50 when the electric motor vehicle 20 reaches the final destination. The guidance system 10 can also notify the user 1 of the battery exchange site 50 or the return site of the replacement battery 21B in the vicinity of the final destination in a case where such sites exist.

[0051] The departure place of the electric motor vehicle 20 is not limited, and for example, can also be a rental site of the electric motor vehicle 20. The rental site of the electric motor vehicle 20 can also be, for example, a facility of a transportation agency such as a train station or a bus stop, a public facility such as a tourist information center, an accommodation facility, or the like, or the periphery thereof. In a case where the owner of the electric motor vehicle 20 is the user 1, or the like, the departure place of the electric motor vehicle 20 can also be the user's 1 own house. The destination of the electric motor vehicle 20 is also not limited. The guidance system 10 can also be configured to recommend the destination itself with or without a condition. In this case, as for the recommended destination, from the viewpoint of using a renewable energy source, it is preferable that it be a site in the vicinity of a power generation facility that generates power using a renewable energy source and that easily generates surplus power. As an example of such a site, a park having a solar power generation device, a seashore having a wind power generation device, or the like is exemplified.

[0052] As described above, the guidance system 10 of the electric motor vehicle 20 according to the present embodiment includes a site registration unit 43 that registers, with respect to the electric motor vehicle 20 capable of replacing a battery, a replacement place (battery replacement site 50) of the replacement battery 21B, a travel distance estimation unit 33B that estimates a travel distance of the electric motor vehicle 20 from a remaining amount of the battery 21A of the electric motor vehicle 20, and a display unit 33H that displays, on map information, the battery replacement site 50 among the battery replacement sites 50 registered in the site registration unit 43, which is within a range of the estimated travel distance of the electric motor vehicle 20. According to the guidance system 10 described above, the user 1 of the electric motor vehicle 20 can know the battery replacement site 50 estimated to be able to be reached within the range of the remaining amount of the battery 21A. Therefore, it is possible to reduce the possibility that the battery replacement site 50 cannot be reached within the range of the remaining amount of the battery 21A.

[0053] The guidance system 10 according to the present embodiment includes a destination input unit 33D into which a destination to which the electric motor vehicle 20 is to go is input, and a site selection unit 44 that selects the battery replacement site 50 in accordance with the estimated travel distance of the electric motor vehicle 20 and the destination input to the destination input unit 33D. With the guidance system 10 described above, the appropriate battery replacement site 50 is selected in accordance with the destination of the electric motor vehicle 20. Therefore, the movement efficiency is good, and in addition, it is less likely to cause a failure such as the remaining amount of the battery 21A being used up.

[0054] In the present embodiment, the battery replacement site 50 includes a battery replacement site 50 that possesses at least a part of the replacement batteries 21B that are charged using electric power generated by renewable energy power generation. The site registration section 43 registers the battery replacement site 50 that possesses the replacement batteries 21B charged using electric power generated by renewable energy power generation as a priority facility. The site selection section 44 is configured to preferentially select the priority facility. According to the above-described guidance system 10, the use of electric power generated by renewable energy power generation can be promoted. As a result, a contribution to the protection of the global environment can be made.

[0055] The guidance system 10 according to the present embodiment is provided with a price setting section 46 that sets the lending price of the replacement batteries 21B. The price setting section 46 sets the lending price of the replacement batteries 21B that are charged using a large proportion of electric power generated by renewable energy power generation to be cheaper than the replacement batteries 21B that are charged using a small proportion of electric power generated by renewable energy power generation. The display section 33H displays the lending price of the replacement batteries 21B. According to the above-described guidance system 10, the use of electric power generated by renewable energy power generation can also be promoted.

Claims

1. A guidance system for an electric motor vehicle, comprising: a registration section that registers, with respect to an electric motor vehicle that can replace a battery, a replacement site that replaces the battery; a presumption section that presumes a travelable distance of the electric motor vehicle based on a remaining amount of the battery of the electric motor vehicle; a display section that displays map information; a destination input section into which a destination to which the electric motor vehicle travels is input; and a selection section that selects the replacement site that replaces the battery based on the presumed travelable distance of the electric motor vehicle and the destination input into the destination input section, wherein in a case where the destination is not input into the destination input section, the display section displays, in the map information, only the replacement site that is within the presumed travelable distance of the electric motor vehicle among the replacement sites that replace the battery and that are registered in the registration section, wherein in a case where the destination is input into the destination input section, the guidance system for the electric motor vehicle determines whether the destination can be reached without replacing the battery of the electric motor vehicle, and in a case where it is determined that the destination can be reached without replacing the battery of the electric motor vehicle, the display section displays a route up to the destination in the map information, and in a case where it is determined that the destination cannot be reached without replacing the battery of the electric motor vehicle, the display section displays the selected replacement site that replaces the battery and a recommended route to the destination via the selected replacement site that replaces the battery.

2. The guidance system for the electric motor vehicle according to claim 1, wherein the replacement site includes a replacement site that has at least a part of the replacement battery charged with power generated by renewable energy, the registration section registers the replacement site that has the replacement battery charged with power generated by renewable energy as a priority facility, and the selection section is configured to preferentially select the priority facility.

3. The guidance system for the electric motor vehicle according to claim 1 or 2, wherein the replacement battery includes a replacement battery that has at least a part of the replacement battery charged with power generated by renewable energy, the guidance system comprises a price setting section that sets a lending price of the replacement battery, the price setting section sets the lending price of the replacement battery that has a large proportion of the replacement battery charged with power generated by renewable energy to be cheaper than the lending price of the replacement battery that has a small proportion of the replacement battery charged with power generated by renewable energy, and the display section displays the lending price of the replacement battery. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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