WO2011101885A1

WO2011101885A1 - Charging guidance device

Info

Publication number: WO2011101885A1
Application number: PCT/JP2010/000945
Authority: WO
Inventors: 田中一幸
Original assignee: 三菱電機株式会社
Priority date: 2010-02-16
Filing date: 2010-02-16
Publication date: 2011-08-25

Abstract

Disclosed is a charging guidance device which notifies a user when the number of charging stations that a vehicle can reach is at or below a reference value, in accordance with the remaining charge and changes in the vehicle position as the vehicle travels.

Description

Charging guide device

The present invention relates to a charging guide device for an electric vehicle that provides a user with a charging recommendation or warning and guidance to a charging facility.

Conventionally, in a system that guides replenishment of driving energy such as charging guidance for electric vehicles, replenishment recommendation or warning based on the remaining amount of driving energy, guidance to replenishment facilities and reachability to the destination, Presented to the user.
For example, Patent Literature 1 discloses an invention proposed for an electric vehicle that uses electric power stored in a rechargeable battery as traveling energy. The content is to search for a charging facility around the vehicle position when the remaining battery capacity is below a certain level, and provide the search result together with identification information as to whether or not the vehicle can reach the charging facility. .

Further, Patent Document 2 discloses a technique for displaying a range on which a detour is possible without a supply along with a route to a destination, superimposed on a map. Patent Document 2 presents a travelable range and a power supply point within this range from the current position of the host vehicle and the remaining battery level, and an appropriate route to reach the destination via the power supply point. The technique to be disclosed is disclosed.

Furthermore, Patent Document 3 discloses a system proposed for a vehicle using hydrogen fuel as travel energy. In this system, the position of the hydrogen fuel station closest to the host vehicle is always detected, and the distance that can be traveled with the remaining amount of hydrogen fuel and the distance to the nearest hydrogen fuel station are calculated. When the distance that can be traveled is less than the distance to the nearest hydrogen fuel station plus a preset margin, a refueling warning is issued and the nearest hydrogen fuel station and its route are identified. indicate.

However, in the invention of Patent Document 1, in an area where the number of charging facilities is not sufficient, even if an attempt is made to search for a charging facility that the host vehicle can reach when the remaining battery capacity becomes a certain level or less, There is a problem that charging facilities may not exist in the vicinity.
The invention of Patent Document 2 presents the route to the destination and the travelable range as a reference for determining the reachability to the destination. The state and replenishment of the battery after reaching the destination Points are not taken into account. For this reason, there is a problem that the battery may run out during traveling after reaching the destination.

The invention of Patent Document 3 can solve the problems of

Patent Documents

1 and 2, but only detects and informs the hydrogen fuel station closest to the own vehicle position. Cannot know how many stands can be reached.
For this reason, even if there is a stand that can be refueled in addition to the notified stand, the driver cannot use the stand, and must always be aware of refueling at the notified stand.
Further, the system according to the invention of Patent Document 3 accesses the CD-ROM storing map information and hydrogen fuel station position information every time the position of the hydrogen fuel station is detected, and detects the detected hydrogen fuel station position. The calculation of the distance up to and the calculation of the distance that can be traveled with the remaining hydrogen fuel are always performed while the vehicle is traveling. For this reason, there is also a problem that the processing load of the system is high.

The present invention has been made to solve the above-described problems, and can notify the user while there is an available charging facility to give the user a sense of security regarding charging. It is an object of the present invention to obtain a charging guide device capable of reducing a processing load for detecting a reachable charging facility.

Japanese Patent Laid-Open No. 9-210702 Japanese Patent No. 3758140 JP 2000-292195 A

The charging guide device according to the present invention includes a remaining charge detection unit that detects a remaining charge of a rechargeable battery for driving a vehicle, a position information detection unit that detects position information of the vehicle, and at least position information of a charging facility. A database unit that stores charging facility information, an extraction unit that extracts charging facility information from the database unit, a remaining charge amount of the vehicle detected by the remaining charge detection unit, and a self-detection detected by the position information detection unit. According to the position of the vehicle, a determination unit that determines whether or not the vehicle can reach the charging facility from which the charging facility information has been extracted by the extraction unit, a notification unit that notifies the user, and a remaining charge detection unit The number of charging facilities that can be reached by the vehicle determined by the determination unit according to the detected remaining charge during traveling of the vehicle and the position change of the vehicle detected by the position information detection unit is a reference value. Notify the user when it is below In which a control unit for controlling.

According to the present invention, the user is notified when the number of charging facilities that the host vehicle can reach is below the reference value in accordance with the remaining charge amount and the position change of the host vehicle when the host vehicle is traveling. By doing in this way, since notification is carried out while there is an available charging facility, there is an effect that it is possible to give the user a sense of security regarding charging.

It is a block diagram which shows the structure of the car navigation apparatus to which the charge guide apparatus by Embodiment 1 of this invention is applied, and its peripheral device. It is a figure which shows the mode transition of the operation | movement by the charge guidance apparatus of Embodiment 1. FIG. It is a flowchart which shows the flow of a process of stop mode M1. It is a flowchart which shows the flow of a process of table initialization mode M2. It is a flowchart which shows the flow of a process of charge mode M3. It is a flowchart which shows the flow of a process of charge termination mode M4. It is a flowchart which shows the flow of a process of driving mode M5. It is a figure which shows the driving | running | working area of the own vehicle according to charge amount, and the reachable charging equipment. It is a flowchart which shows the flow of switching operation | movement of the determination method of the reachability determination part in Embodiment 2 of this invention. It is a flowchart which shows the flow of a process of charge completion mode M4 in Embodiment 3 of this invention. 12 is a flowchart showing a flow of processing in a travel mode M5 in the third embodiment. It is a figure which shows an example of the charging equipment information table in Embodiment 3. FIG. It is a figure which shows the driving | running | working area of the own vehicle according to the charging amount in Embodiment 4, and the reachable charging equipment. It is a figure which shows an example of the charging equipment information table in Embodiment 5. FIG. It is a figure which shows the example of application of the charge guide apparatus by Embodiment 5. FIG. 16 is a flowchart showing a flow of processing in a charging end mode M4 in the fifth embodiment. 14 is a flowchart showing a flow of processing in a travel mode M5 in the fifth embodiment. It is a figure which shows an example of the charging equipment information table in Embodiment 6. FIG. It is a figure which shows the condition where the direction on the basis of the own vehicle advancing direction changes with the driving | running | working of the own vehicle. 18 is a flowchart showing a flow of processing in a charging end mode M4 in the sixth embodiment. 18 is a flowchart showing a flow of processing in a travel mode M5 in the sixth embodiment. FIG. 20 is a diagram illustrating an example of a charging recommendation guide screen in the seventh embodiment. It is a figure which shows the screen which displayed the charging equipment of the destination candidate superimposed on a map.

Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
1 is a block diagram showing a configuration of a car navigation device to which a charging guide device according to Embodiment 1 of the present invention is applied and its peripheral devices. In FIG. 1, a car navigation device 1 is mounted on an electric vehicle having an EV side configuration 2. The EV side configuration 2 includes a drive unit 3, a rechargeable battery 4, and a charge control unit 5. The drive unit (running state detection unit) 3 generates driving force for running the host vehicle using electric power supplied from the rechargeable battery (rechargeable battery for driving) 4.
The charge control unit (remaining charge detection unit) 5 charges the rechargeable battery 4 using charging power supplied from an external charging facility including a commercial outlet (100 V or 200 V). In addition, the charge control unit 5 detects the remaining charge of the rechargeable battery 4 by observing the voltage, charge current, drive current, and the like of the rechargeable battery 4. Further, the charging control unit 5 notifies the control unit 6 of state information including charging start, charging completion, charging power interruption, charging interruption due to removal of the charging connector, and the like, and the remaining charge.

The car navigation device 1 includes a control unit 6, a position detection device 7, a data extraction unit 8, a reachability determination unit 9, a database 10, a memory 11, a display control unit 12, a display device 13, an operation control unit 14, an input device 15, and A communication device 16 is provided. The charging guidance device in the first embodiment is realized as a part of the function of the car navigation device 1, and charging facility guidance is executed using the navigation function. In addition, the position detection device 7, the display control unit 12, the display device 13, the operation control unit 14, the input device 15, and the communication device 16 that are configurations for realizing the navigation function of the car navigation device 1 are included in the charging guide device. Is also used.

The control unit 6 is a component that controls the navigation processing of the car navigation device 1 and the charging guidance processing as the charging guidance device. The position detection device (position information detection unit) 7 is a device that detects the position of the host vehicle, and includes a GPS receiver that receives radio waves from a GPS (Global Positioning System) satellite and measures the position of the host vehicle. .
The data extraction unit (extraction unit) 8 is a configuration unit that extracts, from the database 10, data related to the charging facility (including the installation position of the charging facility) that matches the specified condition input from the control unit 6. The data extracted by the data extraction unit 8 is temporarily stored in the memory 11.
The reachability determination unit (determination unit) 9 determines whether or not the charging equipment that matches the specified condition stored in the memory 11 is within a range where the host vehicle can reach with the charge amount notified from the control unit 6. It is the component which determines.

The database (database unit) 10 is a database that stores data related to the charging facility including the installation position. For example, the database 10 may be a storage medium such as a CD-ROM or DVD that can be read by a hard disk device or an external storage medium drive device provided in the car navigation apparatus 1, a USB (Universal Serial Bus) memory (semiconductor memory), or the like. Built in storage area. In addition, the database 10 may be constructed in a storage device of an external device that can be connected via the communication device 16 of the car navigation device 1.
The memory (charging facility storage unit) 11 is a storage unit that temporarily stores data related to the charging facility extracted from the database 10 by the data extraction unit 8. The memory 11 uses a storage element that has a lower access load from each component compared to the storage device in which the database 10 is constructed.

The display control unit (informing unit) 12 is a component that controls display by the display device (informing unit) 13, and at least the number of charging facilities that the host vehicle can reach exceeds the number of warnings (reference value). The display content of the normal state and the display content of the warning state in which the number of charging facilities is equal to or less than the number of warnings are distinguished and displayed on the display device 13.
For example, a warning is displayed on the screen of the display device 13 to warn that the number of charging facilities that the host vehicle can reach has become a predetermined set value or less. Further, the display control unit 12 provides an HMI (Man Machine Interface) for interactively setting information between the user using the operation control unit 14 and the input device 15 via the screen of the display device 13. . The display device 13 is realized by a liquid crystal display or the like provided in the car navigation device 1.

The operation control unit (input unit, selection unit) 14 is a component that performs processing according to an operation signal corresponding to an operation using the input device 15, and sets setting information input as an operation signal to the control unit 6 and the like. Set. The input device (input unit, selection unit) 15 is a device that accepts an operation input from the outside, such as an operation button or a touch panel of the display device 13. The communication device 16 is a component that performs communication between a component within the car navigation device 1 and an external device. For example, a wireless communication interface that performs wireless communication using a mobile phone terminal connected to the car navigation device 1. Part (connection part) and a short-range wireless communication device.

The control unit 6, the data extraction unit 8, the reachability determination unit 9, the display control unit 12, and the operation control unit 14 execute a program for charging guidance processing according to the gist of the present invention on the microcomputer in the car navigation device 1. Thus, the microcomputer can be realized as a specific means in which hardware and software cooperate.

Next, the operation will be described.
FIG. 2 is a diagram illustrating mode transition of operation by the charging guide device according to the first embodiment. As shown in FIG. 2, the charging guidance operation is divided into a stop mode M1, a table initialization mode M2, a charging mode M3, a charging end mode M4, and a traveling mode M5.
First, when the host vehicle stops at the charging station, the charging guide device enters the stop mode M1, and it is determined whether or not charging using the charging facility of the charging station is started. When charging is started here, a transition is made to the table initialization mode M2. Further, when charging is not started and traveling of the host vehicle is started, a transition is made to the traveling mode M5.

In the table initialization mode M2, based on the current position of the host vehicle and the travelable distance, information on the charging facility existing within the distance that the host vehicle can travel when the rechargeable battery 4 is fully charged from the database 10 and its The total number is extracted and temporarily stored in the memory 11. After this, if charging is not interrupted or completed, the mode transitions to the charging mode M3. In addition, when charging is interrupted or completed, the charging transition mode M4 is entered.

In the charging mode M3, among the charging facilities extracted in the table initialization mode M2 and related information is stored in the memory 11, there are charging facilities that can be reached with the current charge amount of the rechargeable battery 4 from the current position of the host vehicle. Determined. The charging facility information obtained as a result of this determination is stored in the memory 11. Thereafter, if the charging is interrupted or completed, the state transits to the charging end mode M4, and if the charging is not interrupted or completed, the charging mode M3 is repeated.

In the charging end mode M4, among the charging facilities extracted in the table initialization mode M2 and related information is stored in the memory 11, the final charging amount obtained by the interruption or completion of charging from the current position of the own vehicle The charging facility that can be reached is determined. The charging facility information obtained as a result of this determination is stored in the memory 11 and the stored content is updated. When the storage content of the memory 11 is updated in the charging end mode M4, the state transits to the stop mode M1.

In the traveling mode M5, the charging facility stored in the memory 11 is updated in accordance with the position of the vehicle moving by traveling and the decrease in the remaining charge of the rechargeable battery 4 due to power consumption. Here, when the number of reachable charging facilities is equal to or less than a predetermined value, the display device 13 displays a charging recommendation or a warning. Further, when the own vehicle stops at the facility where the charging facility is installed, the vehicle returns to the stop mode M1.

Note that “charge end” in the present invention includes a case where the battery is interrupted without being charged to the full charge amount (charge interruption) and a case where the charge is completed to the full charge amount (charge completion).
In addition, the term “full charge amount” includes a case where the rechargeable battery 4 is charged to 100% and is less than 100% (for example, 80%) set to allow regenerative charging by the drive unit 3. Degree) charge amount is also included.

FIGS. 3 to 7 are flowcharts showing the flow of processing in each mode described above, and FIG. 8 is a diagram showing a travelable area of the host vehicle and a reachable charging facility according to the amount of charge. The processing in each mode will be described in detail with reference to these drawings.
(1) Stop mode M1
FIG. 3 is a flowchart showing the flow of processing in the stop mode M1. In the stop mode M1, the control unit 6 notifies a state notification from a vehicle control system network (not shown in FIG. 1), position information of the own vehicle detected by the position detection device 7, and supply from the rechargeable battery 4 to the drive unit 3. Based on the observation result of electric power, the driving state change of the own vehicle and the charging state are monitored. When the stop of the host vehicle is detected, the control unit 6 transitions to the stop mode M1 and receives a charge start notification from the charge control unit 5 (step ST1). When the charging start is notified from the charging control unit 5 (step ST1; YES), the control unit 6 transitions to the table initialization mode M2 (step ST3).

In addition, while the charging start is not notified from the charging control unit 5 (step ST1; NO), the control unit 6 detects the traveling start of the host vehicle based on the data regarding the driving situation input from the driving unit 3 (step ST2). ). When the start of traveling of the host vehicle is detected (step ST2; YES), the vehicle transits to the traveling mode M5 (step ST4). If the host vehicle remains stopped (step ST2; NO), the process returns to step ST1 and the above process is repeated.

(2) Table initialization mode M2
FIG. 4 is a flowchart showing the flow of processing in the table initialization mode M2. When transitioning to the table initialization mode M2, the control unit 6 acquires the current position of the host vehicle detected by the position detection device 7 (step ST1a). Next, the control unit 6 uses the current position of the host vehicle acquired from the position detection device 7 and a preset distance that the host vehicle can travel when the rechargeable battery 4 is fully charged as a specified condition. 8 is instructed to extract information on the charging facility from the database 10.

The data extraction unit 8 searches the database 10 based on the designated condition instructed from the control unit 6, thereby obtaining information on charging facilities existing within the distance that the vehicle can travel when the rechargeable battery 4 is fully charged. Extracted from the database 10 (step ST2a). Thereafter, the data extraction unit 8 obtains the position information of the charging facilities and the total number of charging facilities existing within the distance that can be traveled from the current position of the host vehicle from the extracted information on the charging facilities, and temporarily stores them in the memory 11. (Step ST3a). In addition, you may memorize | store in the memory 11 as a charging equipment information table containing the position of a charging equipment and the information relevant to the said charging equipment.

When the information extraction by the data extraction unit 8 is completed, the control unit 6 determines whether charging is interrupted or completed based on the notification content of the charging control unit 5 (step ST4a). If charging has not been interrupted or completed (step ST4a; NO), transition is made to charging mode M3 (step ST5a), and if charging has been interrupted or completed (step ST4a; YES), transition to charging end mode M4 is made. (Step ST6a).

The example of FIG. 8 relates to 11 charging facilities from P0 to P10 including the charging facility P0 in which the host vehicle is charging in an area where the host vehicle can travel when fully charged (area indicated by a broken line). Information is extracted from the database 10, and information such as the location information of these charging facilities and the total number 11 of charging facilities are stored in the memory 11.

(3) Charging mode M3
FIG. 5 is a flowchart showing the flow of processing in the charging mode M3. While charging is continued, the control unit 6 acquires the current position of the host vehicle from the position detection device 7, and acquires the amount of charge from the charge control unit 5 to the present (step ST1b). Further, the control unit 6 uses the current position of the host vehicle acquired from the position detection device 7 and the current charge amount of the rechargeable battery 4 acquired from the charge control unit 5 as determination conditions for the reachability determination unit 9. Thus, it is notified to determine whether or not the host vehicle can reach the charging facility stored in the memory 11.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the charging facility stored in the memory 11 is within the range where the host vehicle can reach from the current position with the current charge amount. It is determined whether or not there is (step ST2b).
Thereafter, the reachability determination unit 9 stores the determination result in the memory 11, and simultaneously counts and stores in the memory 11 the number of charging facilities that the host vehicle can reach from the current position with the current charge amount ( Step ST3b). In this way, counting charging facilities that can be reached by the host vehicle during charging can be used as an indicator of charging progress.

Subsequently, the control unit 6 determines whether or not the charging is interrupted or completed based on the notification content of the charging control unit 5 (step ST4b). If charging is not interrupted or completed (step ST4b; NO), the process returns to step ST1b and the above process is repeated. On the other hand, if the charging has been interrupted or completed (step ST4b; YES), the state transitions to the charging end mode M4 (step ST5b).

As described above, in the charging mode M3, the charging facility that can be reached by the current charge amount of the rechargeable battery 4 is determined from the charging facilities that are extracted from the database 10 and stored in the memory 11 in the table initialization mode M2. Then, the storage contents of the memory 11 are updated with the charging facility determined to be reachable. This eliminates the need to access the database 10 and re-extract charging facility information each time a reachable charging facility is determined, thereby reducing the update processing load.

(4) Charging end mode M4
FIG. 6 is a flowchart showing the flow of processing in the charging end mode M4. The control unit 6 acquires the current position of the host vehicle from the position detection device 7, and acquires the final charge amount obtained when the charging is interrupted or completed from the charging control unit 5 (step ST1c). Next, the control unit 6 uses the current position of the host vehicle acquired from the position detection device 7 and the final charge amount of the rechargeable battery 4 acquired from the charge control unit 5 as determination conditions. The charging facility stored in the memory 11 is notified to determine whether or not the host vehicle can be reached.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the charging facility stored in the memory 11 arrives at the vehicle from the current position at the final charge amount when the charge is interrupted or completed. It is determined whether it is within a possible range (step ST2c).
Thereafter, the reachability determination unit 9 stores the determination result in the memory 11, and simultaneously counts and stores in the memory 11 the number of charging facilities that the host vehicle can reach from the current position with the final charge amount (step ST3c). ).

Next, the reachability determination unit 9 discards, from the memory 11, information related to a charging facility that does not exist within the reachable range of the host vehicle from the current position, based on the final charge amount when charging is interrupted or completed (step ST4c). . When the update by the reachability determination result and the count of reachable charging facilities are completed, the vehicle transits to the stop mode M1 (step ST5c).

In the example of FIG. 8, the area indicated by the thick line is the final charge amount when the charging is interrupted, and indicates the range where the host vehicle can reach from the current position (position of the charging facility P0). In this case, charging facilities P9 and P10 in which the storage contents of the memory 11 are updated and the storage contents of the memory 11 are determined to be unreachable as the charging facilities that can be reached by the final charge amount at the time of interruption of charging at nine places from P0 to P8 The information regarding is discarded from the memory 11.

(5) Travel mode M5
FIG. 7 is a flowchart showing the flow of processing in the travel mode M5. The control unit 6 observes the power supplied from the rechargeable battery 4 to the drive unit 3 in addition to the state notification from the vehicle control system network and the position information of the own vehicle detected by the position detection device 7. The start of running is detected.

When detecting the start of traveling of the host vehicle, the control unit 6 sequentially acquires the position of the host vehicle that is moved by traveling from the position detection device 7, and determines the remaining charge amount of the rechargeable battery that is reduced by power consumption from the charging control unit 4. It acquires sequentially (step ST1d). At this time, the control unit 6 is stored in the memory 11 with respect to the reachability determination unit 9 using the own vehicle position acquired from the position detection device 7 and the remaining charge amount acquired from the charge control unit 4 as determination conditions. Notify the charging facility to determine whether or not the host vehicle is reachable.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the charging facility stored in the memory 11 is within the range where the host vehicle can reach from the current position with the notified remaining charge amount. (Step ST2d).
Thereafter, the reachability determination unit 9 stores the determination result in the memory 11, and simultaneously counts and stores in the memory 11 the number of charging facilities that the vehicle can reach from the current position with the remaining charge amount (step S1). ST3d).

Next, the control unit 6 determines whether or not the number of charging facilities updated by the reachability determination unit 9 is equal to or less than a preset warning number CW (step ST4d). At this time, if the updated number of charging facilities is equal to or less than the warning number CW (reference value) (step ST4d; YES), the control unit 6 instructs the display control unit 12 to display a warning on the display device 13. To do. Thereby, a warning is displayed on the display device 13 (step ST5d).

On the other hand, if the updated number of charging facilities is larger than the warning number CW (step ST4d; NO), the control unit 6 determines whether or not the host vehicle has stopped based on the same information as the detection of the start of travel ( Step ST6d). Here, when it is determined that the host vehicle is stopped (step ST6d; YES), the process proceeds to the stop mode M1 (step ST7d). If the host vehicle is traveling (step ST6d; NO), the process returns to step ST1d. The process of each step described above is repeated.

In the example of FIG. 8, the warning number CW is set so as to warn when the number of charging facilities that the host vehicle can reach is three or less. In FIG. 8, when the vehicle starts traveling from the charging facility P0 that has been charged and moves to the point A, the charging facility P6 is determined to be unreachable, and the reachable charging facilities are P0, P7, and P8. become. At this time, since the count value of the reachable charging facility in the memory 11 is updated to 3 and becomes the warning number CW or less, the control unit 6 instructs the display control unit 12 to display a warning.

When the display control unit 12 receives a warning display instruction from the control unit 6, the display control unit 12 causes the display device 13 to display a warning content as described later in the seventh embodiment. Moreover, in order to notify reliably that the charging equipment which can be charged has decreased, you may comprise so that warning lights, such as LED, may be lighted, or warning sounds, such as a chime, may be output, for example.

In the example of FIG. 8, the range in which the host vehicle can travel is represented by a circular area centered on the initial position. The shape of can vary.

As described above, according to the first embodiment, the charge control unit 5 that detects the remaining charge of the rechargeable battery for driving the host vehicle, the position detection device 7 that detects the position information of the host vehicle, and at least the charging A database 10 for storing charging equipment information including equipment location information, a data extraction section 8 for extracting charging equipment information from the database 10, and a remaining charge amount of the own vehicle detected by the charging control section 5 and a position detection device 7 In accordance with the position of the host vehicle detected in step S3, a reachability determination unit 9 that determines whether or not the host vehicle can reach the charging facility from which the charging facility information has been extracted by the data extraction unit 8, and a notification to the user are performed. According to the notification unit including the display control unit 12 and the display device 13, the remaining charge during traveling of the host vehicle detected by the charging control unit 5, and the position change of the host vehicle detected by the position detection device 7, Determined by the reachability determination unit 9 The own vehicle in which a control unit 6 for controlling the notification unit to notify a the user the number of possible charging facility reached becomes less than the reference value.
In this way, instead of searching for a charging facility when the remaining charge reaches a predetermined value, the transition of the number of charging facilities that can be reached according to the traveling of the host vehicle is grasped, and a predetermined number of warnings is used as a reference. Therefore, the user can be notified while there is always a reachable charging facility.
Further, since the notification is made while there are a plurality of charging facilities that the host vehicle can reach, an appropriate charging facility can be selected from the plurality of charging facilities.

Moreover, according to this Embodiment 1, the memory 11 which memorize | stores the charging equipment information extracted from the database 10 by the data extraction part 8 is provided, and the data extraction part 8 is charging remaining charge while charging the rechargeable battery 4. The charging facility information of the charging facility that the host vehicle can reach according to the host vehicle position is extracted from the database 10 and stored in the memory 11. In this way, by extracting a charging facility that can be reached by the host vehicle and storing it in the memory 11 during charging when the system operation such as navigation processing is not performed, the memory 11 can be stored without affecting the system operation. Information about charging facilities that the host vehicle can reach can be set.

Furthermore, in Embodiment 1 described above, the case where the display control unit 12 displays a warning on the display device 13 when the number of charging facilities that the host vehicle can reach is equal to or less than the set value has been described, but charging is required. In addition to the warning display that strongly informs the user, either the recommended display that recommends charging more gently or the guidance display to the charging facility may be used as the notification content. Thereby, while there is always a charging facility that the host vehicle can reach, it is possible to perform a recommendation display, a warning display, and guidance to the charging facility.

Further, in the first embodiment, the display is different in two states: a state in which the number of charging facilities that the host vehicle can reach is sufficient, and a warning state in which the number of charging facilities is equal to or less than a predetermined number of warnings. Although it was set as the contents, the contents indicating other than the above two states such as displaying the transition of the number of charging facilities according to the traveling of the host vehicle may be displayed on the screen. In this way, more detailed notification can be performed.

In the first embodiment, a case is shown in which a warning is displayed when the number of charging facilities that the host vehicle can reach is equal to or less than the set value. However, the user can reach the host vehicle at an arbitrary time. The number of charging facilities may be always displayed so that the number of charging facilities can be confirmed. Further, the number of charging facilities may be displayed in accordance with an operation input using the input device 15.

In the first embodiment, the storage content of the database 10 may be appropriately updated. For example, the storage contents of the database 10 are updated from the outside via the communication device 16 so that the latest information can be obtained. By comprising in this way, a charging facility guidance can be performed to a user always based on new charging facility information. The communication device 16 may be a communication device having a power line communication function using a charging power line, or may be an interface that communicates with a communication device such as a mobile phone.

The database 10 is updated in the stop mode M1. By doing in this way, the other process implemented while driving | running | working a vehicle and the update process of the database 10 can be implemented, without giving a load mutually. In addition, when wireless communication is used for updating the database 10, it is possible to eliminate the influence of fluctuations in the communication state during travel on the update process.

Further, when the database 10 is updated using communication via the communication device 16, the user may be able to start the update at an arbitrary time by an operation input using the input device 15.
By doing in this way, the user can select the time and place where the update is performed, and the update can be executed at a place with a good communication state or at a time convenient for the user.

Embodiment 2. FIG.
In the reachability determination unit according to the second embodiment, the range in which the host vehicle is reachable by the two determination methods of simple determination with a small processing load and detailed determination that is more detailed than the simple determination but with a large processing load. Determine the charging equipment. The basic configuration of the charging guide device according to the second embodiment is the same as the configuration described with reference to FIG. 1 in the first embodiment. Therefore, in the following description, refer to FIG. 1 for the device configuration. I decided to.

In the reachability determination unit 9 according to the second embodiment, two determination methods, simple determination and detailed determination, are set, and the determination method is switched according to an instruction from the control unit 6.
In the simple determination, for example, the reachability is determined by comparing the straight distance between the vehicle position and the charging facility with the distance that can be traveled with the remaining charge at the time of determination.
In the detailed determination, for example, the route information from the car navigation device 1 to the charging facility is acquired, the power required for traveling from the vehicle position to the charging facility on this route is calculated, and the calculated power is consumed. A determination is made as to whether or not it is reachable by comparing the amount of charge to be received and the remaining charge at the time of determination.

FIG. 9 is a flowchart showing the flow of the switching operation of the determination method of the reachability determination unit in the second embodiment of the present invention. The control unit 6 instructs the reachability determination unit 9 to switch the determination method according to the number of charging facilities stored in the memory 11.
First, the control unit 6 determines whether or not the number of charging facilities stored in the memory 11 is equal to or less than a predetermined value (for example, a value twice the number of warnings CW) (step ST1e). If the number of charging facilities exceeds a predetermined value (step ST1e; NO), the control unit 6 instructs the reachability determination unit 9 to make a simple determination. The reachability determination unit 9 determines the reachability of the charging facility stored in the memory 11 by simple determination according to the instruction from the control unit 6 (step ST2e).

On the other hand, when the number of charging facilities is equal to or less than the predetermined value (step ST1e; YES), the control unit 6 instructs the reachability determination unit 9 to make a detailed determination. The reachability determination unit 9 determines whether or not the charging facility stored in the memory 11 is reachable by detailed determination in accordance with the instruction of the control unit 6 (step ST3e). In the example of FIG. 8 shown in the first embodiment, when the number of warnings CW × 2 = 3 × 2 = 6 or less, the simple determination method is switched to detailed determination.

As described above, when the number of charging facilities stored in the memory 11 is large, it is considered that there are sufficient charging facilities that can be used, and it is only necessary to roughly grasp whether or not the current charging remaining amount can be reached. A determination method is used to determine reachability. Thereby, the load required for the entire determination process can be reduced.
In addition, when the number of charging facilities stored in the memory 11 is small, it is necessary to accurately grasp whether or not the available charging facilities are small and can be reached with the current remaining charge amount. Use to determine reachability. Thereby, the precision of the determination of reachability to the charging facility is improved.

As described above, in the second embodiment, the reachability determination unit 9 includes a plurality of determination methods for determining whether or not the host vehicle can reach the charging facility, and the charging facility for determining whether or not the host vehicle can be reached. When the number is large, the determination is performed by a simple determination method as compared with the case where the number of charging facilities is small. In this way, the accuracy and processing load required for reachability determination can be optimized according to the situation.

In the second embodiment, the case where the two determination methods of the simple determination and the detailed determination are switched is shown, but a determination method may be further set. For example, a plurality of setting values to be compared with the number of charging facilities stored in the memory 11 are prepared, and a determination method in which the determination accuracy and processing load are between simple determination and detailed determination is provided, and charging accompanying traveling of the host vehicle The judgment method is switched according to changes in the number of facilities. Even in this case, when the number of charging facilities is large, the determination process is simplified and the processing load is reduced as compared with the case where the number of charging facilities is small.

Embodiment 3 FIG.
In the third embodiment, related information on charging equipment is stored in a database as information on charging equipment. This related information includes any information of the available time zone of the charging facility, the type of the charging facility, the incidental facility, the usage price, and the waiting time required for charging.
The basic configuration of the charging guide device according to the third embodiment is the same as that described with reference to FIG. 1 in the first embodiment, and therefore, in the following description, refer to FIG. 1 for the device configuration. I decided to.

Next, the operation will be described.
Here, details of the charging end mode M4 and the traveling mode M5 in which processing different from that of the first embodiment is performed by using the related information of the charging facility will be described.
In addition, the case where the kind of charging equipment (rapid charger / double speed charger (200V) / normal charger (100V)) is set will be described as an example of the information related to the charging equipment.
FIG. 10 is a flowchart showing the flow of processing in charge termination mode M4 in Embodiment 3 of the present invention, and FIG. 11 is a flowchart showing the flow of processing in travel mode M5 in Embodiment 3. FIG. 12 is a diagram illustrating an example of a charging facility information table according to the third embodiment. For each type of charging facility, the number of charging facilities within the range that the host vehicle can reach with the amount of charge at the end of charging, An updated value of the number of charging facilities within a range that the host vehicle can reach with the remaining amount of charge during traveling and the number of warnings set for each classification are set.

(1a) Charging end mode M4 (see FIG. 10)
The control unit 6 acquires the current position of the host vehicle from the position detection device 7, and acquires the final charge amount obtained when the charging is interrupted or completed from the charging control unit 5 (step ST1f). Next, the control unit 6 uses the current position of the host vehicle acquired from the position detection device 7 and the final charge amount of the rechargeable battery 4 acquired from the charge control unit 5 as determination conditions. The charging facility stored in the memory 11 is notified to determine whether or not the host vehicle can be reached.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the reachability determination unit 9 reads out the charging facility stored in the memory 11 (step ST2f), and the read out charging facility determines when the charging is interrupted or completed. It is determined whether or not the vehicle is within the reachable range from the current position with the final charge amount (step ST3f). If the charging facility is not within the reachable range of the host vehicle (step ST3f; NO), the reachability determination unit 9 transitions to step ST6f.

If it is determined that the charging facility is within the reachable range of the host vehicle (step ST3f; YES), the reachability determination unit 9 determines the type of charging facility from the related information of the charging facility (step ST4f).
When the charging facility is a quick charging facility, reachability determination unit 9 counts the number of quick charging facilities that the host vehicle can reach from the current position as the final charge amount, and stores it in memory 11 (step ST5f-1). ).
In addition, if the charging facility is a normal charging facility, the reachability determination unit 9 counts the number of normal charging facilities that the host vehicle can reach from the current position with the final charge amount, and stores the counted number in the memory 11 (Step 11). ST5f-2).
Further, when the charging facility is a double speed charging facility, the reachability determination unit 9 counts the number of double speed charging facilities that the host vehicle can reach from the current position as the final charge amount, and stores the counted number in the memory 11 ( Step ST5f-3).

Thereafter, the reachability determination unit 9 determines whether or not the above processing has been completed for all the charging facilities stored in the memory 11 (step ST6f). Here, if the processing of all the charging facilities has not been completed (step ST6f; NO), the reachability determination unit 9 returns to the processing of step ST2f, and selects the unprocessed charging facilities stored in the memory 11. Read and repeat the process from step ST2f to step ST6f.

On the other hand, if the processing of all the charging facilities stored in the memory 11 is completed (step ST6f; YES), the reachability determination unit 9 determines the reachable charging facility information and the reachable charging facility information. The number is stored in the memory 11 for each type of charging equipment (step ST7f).
As described above, the charging facility determined to be reachable is confirmed from the related information, the type of the charging facility is confirmed, the number of charging facilities that can be reached for each type is counted, and the initial value (CO) shown in FIG. Is stored in the memory 11.

Next, the reachability determination unit 9 discards, from the memory 11, information related to the charging facility that is determined not to be within the reachable range of the host vehicle from the current position based on the final charge amount when charging is interrupted or completed. (Step ST8f). If the said process is completed, it will change to the stop mode M1 (step ST9f).

(2a) Travel mode M5 (see FIG. 11)
When detecting the start of traveling of the host vehicle, the control unit 6 sequentially acquires the position of the host vehicle that is moved by traveling from the position detection device 7, and determines the remaining charge amount of the rechargeable battery that is reduced by power consumption from the charging control unit 4. Obtained sequentially (step ST1g). At this time, the control unit 6 is stored in the memory 11 with respect to the reachability determination unit 9 using the own vehicle position acquired from the position detection device 7 and the remaining charge amount acquired from the charge control unit 4 as determination conditions. Notify the charging facility to determine whether or not the host vehicle is reachable.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the charge facility stored in the memory 11 is read (step ST <b> 2 g), and the read charge facility is the notified remaining charge amount. Then, it is determined whether or not the host vehicle is within a reachable range from the current position (step ST3g). Here, when it is within the reachable range (step ST3g; YES), the reachability determination unit 9 transitions to step ST8g.

When it is determined that the charging facility is not within the reachable range of the host vehicle (step ST3g; NO), the reachability determination unit 9 determines the type of charging facility from the related information of the charging facility (step ST4g).
When it is determined that the charging facility is a quick charging facility, the reachability determination unit 9 counts the number of quick charging facilities that the host vehicle can reach from the current position with the notified remaining charge amount, 11 updates the number of quick charging facilities stored (the running count (CN) in FIG. 12) (step ST5g-1).
Subsequently, the control unit 6 determines whether or not the number of quick charging facilities updated by the reachability determination unit 9 is equal to or less than a preset number of warnings CW (the number of warnings CW1 (= 4) in FIG. 12) regarding the quick charging facilities. Is determined (step ST6g-1). At this time, if the number of quick charging facilities exceeds the warning number CW (step ST6g-1; NO), the process proceeds to step ST8g.
If the number of quick charging facilities is equal to or less than the warning number CW (step ST6g-1; YES), the control unit 6 instructs the display control unit 12 to display a warning about the quick charging facilities on the display device 13. Thereby, the display device 13 displays a warning for the quick charging facility (step ST7g-1).

In step ST4g, when it is determined that the charging facility is a normal charging facility, the reachability determination unit 9 counts the number of normal charging facilities that the host vehicle can reach from the current position with the notified remaining charge amount. Then, the number of normal charging facilities (the running count (CN) in FIG. 12) stored in the memory 11 is updated (step ST5g-2).
Subsequently, the control unit 6 determines whether or not the number of normal charging facilities updated by the reachability determination unit 9 is equal to or less than a preset number of warnings CW (the number of warnings CW3 (= 2) in FIG. 12) regarding the normal charging facilities. Is determined (step ST6g-2). At this time, if the number of normal charging facilities exceeds the warning number CW (step ST6g-2; NO), the process proceeds to step ST8g.
If the number of normal charging facilities is equal to or less than the warning number CW (step ST6g-2; YES), the control unit 6 instructs the display control unit 12 to display a warning about the normal charging facilities on the display device 13. Thereby, the display device 13 displays a warning for the normal charging facility (step ST7g-2).

Furthermore, when it is determined in step ST4g that the charging facility is a double speed charging facility, the reachability determination unit 9 determines the number of double speed charging facilities that the host vehicle can reach from the current position with the notified remaining charge amount. And the number of double-speed charging facilities (the running count (CN) in FIG. 12) stored in the memory 11 is updated (step ST5g-3).
Subsequently, the control unit 6 determines whether or not the number of double-speed charging facilities updated by the reachability determination unit 9 is equal to or less than a preset number of warnings CW (number of warnings CW2 (= 2) in FIG. 12) regarding the double-speed charging facilities. Is determined (step ST6g-3). At this time, if the number of double speed charging facilities exceeds the warning number CW (step ST6g-3; NO), the process proceeds to step ST8g.
If the number of double speed charging facilities is equal to or less than the warning number CW (step ST6g-3; YES), the control unit 6 instructs the display control unit 12 to display a warning about the double speed charging facilities on the display device 13. Thereby, the display device 13 displays a warning for the double speed charging facility (step ST7g-3).

Thereafter, the control unit 6 determines whether or not the above processing has been completed for all the charging facilities stored in the memory 11 (step ST8g). Here, if the processing of all the charging facilities is not completed (step ST8g; NO), the processing from step ST1g to step ST8g is repeated for the unprocessed charging facilities stored in the memory 11.

On the other hand, if the processing of all the charging facilities stored in the memory 11 is completed (step ST8g; YES), the control unit 6 stops the host vehicle based on the same information as the detection of the start of traveling. (Step ST9g). Here, if it is determined that the host vehicle is stopped (step ST9g; YES), the process proceeds to the stop mode M1 (step ST10g). If the host vehicle is traveling (step ST9g; NO), the process returns to step ST1g. The process of each step described above is repeated.

Thus, the count value (number of charging facilities) is updated for each type of charging facility for the plurality of charging facilities stored in the memory 11. When the updated count value (CN) is equal to or less than the number of warnings (CW1 to CW3) set for each type of charging equipment, the display device 13 displays a warning regarding the relevant type of charging equipment.
Here, the display control unit 12 may use the display device 13 to display a warning with a different content for each type of charging facility.
Further, the number of warnings (CW1 to CW3) for each type of charging equipment may be the same value or different values.

In addition, although the case where the warning display was shown for every kind of charging equipment was shown, warning number CW0 (for example, CW0 = 5) is set also about the total number of the charging equipment memorize | stored in the memory 11, as shown in FIG. Even when the total count value of the number of charging facilities updated for each type becomes the warning number CW0 or less, a warning may be displayed.

Furthermore, the number of warnings for each type of charging facility may be configured to be settable by the user using the input device 15. In this configuration, the display control unit 12 displays a setting screen and a selection screen on the display device 13, and provides an HMI that can be set from outside the device by an operation input using the input device 15 on the screen. By using this HMI, the user can appropriately set the number of warnings and select charging facility information. Thereby, it is possible to preferentially notify the charging facility of the classification desired by the user.
For example, as shown in FIG. 12, the warning number CW1 of the quick charging facility is set to a value CW1 (= 4) larger than the warning numbers CW2 and CW3 (= 2) of other types of charging facilities. A reduction in the number of possible rapid charging facilities can be warned in preference to other types of charging facilities.

As described above, according to the third embodiment, related information including at least the type of charging facility is set as the charging facility information stored in the database 10, extracted from the database 10 and stored in the memory 11. For each type of charging equipment, determine whether the host vehicle is reachable, update the number of charging facilities as the host vehicle is traveling, and whether to display warnings according to changes in the number of charging facilities. To do. Thereby, the kind of charging equipment which a user desires can be selected suitably.

In the third embodiment, the determination of whether or not the host vehicle can reach, the update of the number of charging facilities accompanying the traveling of the host vehicle, and the determination of whether or not to display a warning according to the transition of the number of charging facilities is performed for each type of charging facility. Although the case where it carries out was shown, this invention is not limited to this.
For example, as item information constituting the related information of charging equipment, incidental equipment of charging equipment, charge setting such as whether charging is charged or free, price when charged, available time zone, waiting time for charging, etc. Is set in advance. As an incidental facility of the charging facility, there is information indicating whether a store such as a convenience store or a dining room is provided in addition to the charging facility.
Using at least one item information of these related information, in the same manner as described above, it is determined whether or not the host vehicle is reachable, the number of charging facilities is updated when the host vehicle is traveling, and the warning is based on the transition of the number of charging facilities. Judge whether display is possible. As a result, it is possible to provide information necessary for the user to select an optimal charging facility.

Moreover, in the said Embodiment 3, the number CW of warnings used for determination of the possibility of warning display based on the relevant information on charging equipment can be changed, or the number of warnings for each type of charging equipment can be arbitrarily changed by the user However, the present invention is not limited to this.
In the present invention, the display control unit 12 displays an item information selection screen of related information on the display device 13, and an HMI that selects item information from the outside of the device by an operation input using the input device 15 on the screen is performed. It may be configured to provide.
By using this HMI, the user can determine whether the host vehicle is reachable, update the number of charging facilities as the host vehicle travels, and determine whether a warning display is available according to the change in the number of charging facilities. As the item information of the related information, desired item information can be selected from the related information including the type of the charging facility.
For example, one item information (if it is the type of charging equipment, it is a quick charging equipment) may be selected from the related information, or a plurality of item information (type of charging equipment and incidental information). Or a quick charging facility and a store may be selected.
Of course, the number of warnings CW may be set for each selected item information (for example, a quick charging facility and a store is also provided). That is, the “item information” of the related information of the charging facility and the “warning number CW” corresponding thereto can be freely set.
Thereby, the charging equipment classified for each item information constituting the related information can be notified for each classification. Moreover, about the charging equipment classified for every item information which comprises related information, the decision | availability determination of notification for every said classification and the determination reference value (number of warnings) are set, and the charging equipment of the classification which a user desires is set. Priority can be notified.

Embodiment 4 FIG.
In the first embodiment, the reachability determination unit 9 determines the reachability based on the warning number CW set in advance. In this case, when the total number of charging facilities stored in the memory 11 is less than the warning number CW from the beginning when it is determined that the host vehicle is reachable at the end of charging (when charging is interrupted or completed), immediately after the transition to the driving mode M5 Therefore, it is determined that the number of warnings is CW or less, and a warning display or the like is notified.
Therefore, in the fourth embodiment, a configuration will be described in which the warning number CW is changed according to the number of charging facilities finally determined to be reachable in the charging end mode M4.
The basic configuration of the charging guide device according to the fourth embodiment is the same as that described with reference to FIG. 1 in the first embodiment, and therefore, in the following description, refer to FIG. 1 for the device configuration. I decided to.

Next, the operation will be described.
Here, a case where the initial value of the warning number CW is 10 is taken as an example.
In the charging end mode M4, the reachability determination unit 9 determines whether the charging facility stored in the memory 11 is within the range where the host vehicle can reach from the current position with the final charging amount when the charging is interrupted or completed. In addition to determining whether or not, the number of charging facilities determined to be reachable is counted. The number of charging facilities counted at this time is set as an initial value CO.

When the initial value CO is equal to or larger than the initial value (= 10) (first reference value) of the preset warning number CW, the control unit 6 uses this warning number CW as it is to determine whether or not to display a warning. judge. If the initial value CO is less than the initial value (= 10) of the warning number CW, the control unit 6 increases the warning number CW to CO / 2 (rounds up if CO is an odd number) (second reference value). Set to.
FIG. 13 is a diagram illustrating a travelable area of the host vehicle and a reachable charging facility according to the amount of charge in the fourth embodiment. In the example of FIG. 13, since the initial value CO at the time of charging interruption is 9, and the initial value of the warning number CW is less than 10, the control unit 6 changes the warning number CW from CO / 2 = 4.5 → 5. Change the setting.

In the travel mode M5, the reachability determination unit 9 updates the count value of the charging facility that can be reached as the host vehicle travels. In FIG. 13, when the own vehicle starts traveling from the charging facility P0 and moves to the point B, it is determined that the charging facility P2 is unreachable. At this time, the count value of the reachable charging facility is changed from the immediately preceding value 6 (value including the charging facility P2) to 5 (P0, P1, P6, P7, P8). As a result, the count value of the reachable charging equipment is equal to or less than the warning number CW (= 5), so the control unit 6 instructs the display control unit 12 to display a warning.

As described above, according to the fourth embodiment, in changing the number of warnings used for determining whether or not warning is possible according to the number of charging facilities that the vehicle extracted by the memory 11 can reach, the charging end mode M4 When the initial value CO of the number of charging facilities set in the memory 11 is less than the initial value of the warning number CW, a value smaller than the initial value of the warning number CW is set as the warning number CW.
As a result, when the total number of charging facilities determined that the host vehicle is reachable at the end of charging (when charging is interrupted or completed) is smaller than the initial value of the warning number CW, the transition is made from the charging end mode M4 to the travel mode M5. It is possible to prevent notification such as warning display from being performed immediately after the operation.

Embodiment 5 FIG.
In the said Embodiment 3, the case where the charging equipment which the own vehicle can reach | attain | categorize was classified for every item of related information, the number of warnings was set for every classification | category, and the determination of notification possibility was shown.
In the fifth embodiment, charging facilities that can be reached by the host vehicle are classified by geographical arrangement, and the number of warnings is set for each classification to determine whether or not notification is possible. As a specific example, charging facilities are classified according to the directions of east, west, south, and north.
The basic configuration of the charging guide apparatus according to the fifth embodiment is the same as that described with reference to FIG. 1 in the first embodiment, and therefore, in the following description, refer to FIG. 1 for the apparatus configuration. I decided to.

FIG. 14 is a diagram illustrating an example of a charging facility information table in the fifth embodiment. As shown in FIG. 14, in the charging facility information table in the fifth embodiment, the number of charging facilities obtained in the charging end mode M4 (the number of charging facilities that can be reached with the final charge amount at the end of charging) It is set as an initial value (COe, COw, COs, COn) for each classification by direction.
In addition, the number of charging facilities updated in the travel mode M5 is set as a count value (CNe, CNw, CNs, CNn) for each classification based on the directions of east, west, south, and north.
Furthermore, the number of warnings (CWe, CWw, CWs, CWn) for each classification based on the directions of east, west, north, and south is set. It should be noted that the number of warnings may be configured so that the user can arbitrarily change the number of warnings arbitrarily or according to the initial value of the number of charging facilities at the end of charging, as described in the first to fourth embodiments. In the following description, the number of warnings for each direction is set according to the initial value of the number of charging facilities at the end of charging.

Next, the operation will be described.
Here, details of the charging end mode M4 and the traveling mode M5 in which processing different from that of the first embodiment is performed by classifying the charging facilities that can be reached by the host vehicle in the east, west, south, and north directions will be described.
FIG. 15 is a diagram illustrating an application example of the charging guide device according to the fifth embodiment. FIG. 15 shows the charged charging facility P0, the arrangement of charging facilities around the charging facility P0, the area where the host vehicle can reach with the amount of charge at the end of charging, the destination C of the host vehicle, and the planned travel route. . The charging end mode M4 and the traveling mode M5 will be described using this application example.
FIG. 16 is a flowchart showing the flow of processing in charge end mode M4 in the fifth embodiment, and FIG. 17 is a flowchart showing the flow of processing in traveling mode M5 in the fifth embodiment.

(1b) Charging end mode M4 (see FIG. 16)
The control unit 6 acquires the current position of the host vehicle from the position detection device 7, and acquires the final charge amount obtained when the charging is interrupted or completed from the charging control unit 5 (step ST1h).
Next, the control unit 6 uses the current position of the host vehicle acquired from the position detection device 7 and the final charge amount of the rechargeable battery 4 acquired from the charge control unit 5 as determination conditions. The charging facility stored in the memory 11 is notified to determine whether or not the host vehicle can be reached.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the reachability determination unit 9 reads out the charging facility stored in the memory 11 (step ST2h), and the read out charging facility determines whether the charging is interrupted or completed. It is determined whether or not the vehicle is within the reachable range from the current position with the final charge amount (step ST3h).

Here, as shown in FIG. 15, the reachability determination unit 9 determines the surrounding areas based on the vehicle position (the position of the charging facility P0) as the areas corresponding to the east, west, south, and north directions. Classify into: Accordingly, when the reachability determination unit 9 determines that the charging facility is within the reachable range of the host vehicle by the above-described processing (step ST3h; YES), the charging facility is on the east side, west side, south side, or north side. It is confirmed in which direction area the vehicle is located, the number of charging facilities that the host vehicle can reach is counted for each direction, and the count value of the number of charging facilities in the charging facility information table in the memory 11 is updated for each direction ( Step ST4h).
On the other hand, if the charging facility is not located within the reachable range of the host vehicle (step ST3h; NO), the reachability determination unit 9 discards information on the charging facility from the memory 11 (step ST5h). .

Thereafter, the reachability determination unit 9 determines whether or not the above processing has been completed for all the charging facilities stored in the memory 11 (step ST6h). Here, if the processing of all the charging facilities has not been completed (step ST6h; NO), the reachability determination unit 9 returns to the processing of step ST2h and selects the unprocessed charging facilities stored in the memory 11. Read out and repeat the processing from step ST2h to step ST6h.

On the other hand, if processing of all the charging facilities stored in the memory 11 has been completed (step ST6h; YES), the reachability determination unit 9 determines the reachable charging facility information and the number of reachable charging facilities. (Initial values COe, COw, COs, COn) are stored in the charging facility information table of the memory 11 for each direction (step ST7h).
Further, the reachability determination unit 9 sets the warning numbers CWe, CWw, CWs, CWn for each direction according to the initial values COe, COw, COs, COn for each direction of the number of charging facilities that the host vehicle can reach, It memorize | stores in the charging equipment information table of the memory 11 (step ST8h).
Here, as shown in FIG. 14, a value of 10% of the initial value (the number of charging facilities that the host vehicle can reach at the end of charging) is set as the number of warnings for each direction. After that, the mode changes to the stop mode M1 (step ST9h).

(2b) Travel mode M5 (see FIG. 17)
Here, a case where charging is performed at the charging facility P0 shown in FIG. 15 and the host vehicle travels from the charging facility P0 to the destination C after completion of charging will be described as an example.
When detecting the start of traveling of the host vehicle, the control unit 6 sequentially acquires the position of the host vehicle that is moved by traveling from the position detection device 7, and determines the remaining charge amount of the rechargeable battery that is reduced by power consumption from the charging control unit 4. It acquires sequentially (step ST1i). At this time, the control unit 6 is stored in the memory 11 with respect to the reachability determination unit 9 using the own vehicle position acquired from the position detection device 7 and the remaining charge amount acquired from the charge control unit 4 as determination conditions. Notify the charging facility to determine whether or not the host vehicle is reachable.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the reachability determination unit 9 reads out the charging facility stored in the memory 11 (step ST <b> 2 i), and the read out charging facility is the notified remaining charge amount. It is determined whether or not the host vehicle is within a reachable range from the current position (step ST3i). Here, when the read charging equipment is within the reachable range of the host vehicle (step ST3i; YES), the reachability determination unit 9 transitions to step ST7i.

When it is determined that the host vehicle is not within the reachable range (step ST3i; NO), the reachability determination unit 9 determines in which direction area the east side, the west side, the south side, and the north side the charging facility is arranged. After confirmation, the number of charging facilities that the host vehicle can reach is counted by direction, and the count values CNe, CNw, CNs, CNn in the charging facility information table of the memory 11 are updated (step ST4i).

Subsequently, the control unit 6 determines whether or not the count value of the number of charging facilities for each azimuth updated by the reachability determination unit 9 is equal to or less than a preset number of warnings CWe, CWw, CWs, and CWn for each azimuth. Determine (step ST5i). At this time, if the number of charging facilities exceeds the number of warnings (step ST5i; NO), the process proceeds to step ST7i.
Further, when any one of the count values CNe, CNw, CNs, and CNn becomes equal to or less than the warning number CWe, CWw, CWs, CWn for each direction (step ST5i; YES), the control unit 6 instructs the display control unit 12 to Instruct the warning display for the charging equipment in the corresponding direction. Thereby, the display apparatus 13 displays the warning of the said charging equipment by control of the display control part 12 (step ST6i).

Thereafter, the control unit 6 determines whether or not the above processing has been completed for all the charging facilities stored in the memory 11 (step ST7i). Here, if the processing of all the charging facilities is not completed (step ST7i; NO), the processing from step ST1i to step ST7i is repeated for the unprocessed charging facility stored in the memory 11.

On the other hand, if the processing of all the charging facilities stored in the memory 11 is completed (step ST7i; YES), the control unit 6 stops the host vehicle based on the same information as the detection of the start of traveling. (Step ST8i). Here, if it is determined that the host vehicle is stopped (step ST8i; YES), the process proceeds to the stop mode M1 (step ST9i). If the host vehicle is traveling (step ST8i; NO), the process returns to step ST1i. The process of each step described above is repeated.

As described above, according to the fifth embodiment, the charging facilities extracted from the database 10 and stored in the memory 11 are classified by the position of the charging facility, and the number of charging facilities stored in the memory 11 is classified for each classification. And update for each category. By doing in this way, an information method can be set up for every position where charging equipment exists. In addition, it is possible to preferentially notify the charging facility existing at a position desired by the user.

Further, according to the fifth embodiment, since the position of the charging facility is classified by the orientation in the charging facility information table of the memory 11, a notification method can be set for each orientation in which the charging facility exists. Thereby, it is possible to preferentially notify the charging facility in the direction desired by the user.
For example, consider a case where the host vehicle travels along the planned travel route shown in FIG. 15 and goes to the destination C in the north area from the host vehicle position (position of the charging facility P0) as the departure point. In this case, by increasing the number of warnings on the north side than on the east side, the destination C that will be driven when the remaining charge level is lower than the east side area that is close to the departure point and has a sufficient remaining charge level is included. The charging facility in the north area can be preferentially notified.

Embodiment 6 FIG.
In the fifth embodiment, the charging facility information table data is classified according to the direction of east, west, south, and north with reference to the vehicle position at the end of charging, and the notification determination is performed by setting the number of warnings for each classification.
In the sixth embodiment, the position of the charging facility is always classified based on the position of the own vehicle, and the notification is determined by setting the number of warnings for each classification. Here, the charging facilities are classified in directions (front, rear, right, left) based on the traveling direction of the host vehicle.
The basic configuration of the charging guide device according to the sixth embodiment is the same as that described with reference to FIG. 1 in the first embodiment, and therefore, in the following description, refer to FIG. 1 for the device configuration. I decided to.

FIG. 18 is a diagram illustrating an example of a charging facility information table according to the sixth embodiment. As shown in FIG. 18, in the charging facility information table in the sixth embodiment, the number of charging facilities obtained in the charging end mode M4 (the number of charging facilities that can be reached with the final charge amount at the end of charging) It is set as an initial value (COf, COb, COr, COl) for each classification according to the direction based on the traveling direction. Further, the number of charging facilities updated in the traveling mode M5 is set as a count value (CNf, CNb, CNr, CNl) for each classification according to the direction. Furthermore, the number of warnings (CWf, CWb, CWr, CWl) for each classification according to the direction is set.

Next, the operation will be described.
Here, the details of the charging end mode M4 and the traveling mode M5 in which processing different from that of the first embodiment is performed by classifying the charging facilities that can be reached by the host vehicle according to the direction based on the traveling direction of the host vehicle. To state.
FIG. 19 is a diagram illustrating a situation in which the direction of the traveling direction of the host vehicle changes with the traveling of the host vehicle. The host vehicle travels from position A through position B to position C on the travel route. The case of moving is shown. The traveling mode M5 will be described using this application example.
FIG. 20 is a flowchart showing a process flow in the charging end mode M4 in the sixth embodiment, and FIG. 21 is a flowchart showing a process flow in the traveling mode M5 in the sixth embodiment.

(1c) Charge end mode M4 (see FIG. 20)
The control unit 6 acquires the current position of the host vehicle from the position detection device 7, and acquires the final charge amount obtained when the charging is interrupted or completed from the charging control unit 5 (step ST1j).
Next, the control unit 6 uses the current position of the host vehicle acquired from the position detection device 7 and the final charge amount of the rechargeable battery 4 acquired from the charge control unit 5 as a determination condition to the reachability determination unit 9 in the memory. 11 is notified so as to determine whether or not the host vehicle can reach the charging facility stored in 11.

When the reachability determination unit 9 receives an execution notification of reachability determination from the control unit 6, the reachability determination unit 9 reads out the charging facility stored in the memory 11 (step ST2j), and the read out charging facility determines whether the charging is interrupted or completed. It is determined whether or not the vehicle is within a reachable range from the current position with the final charge amount (step ST3j).

When it is determined that the charging facility is within the reachable range of the host vehicle (step ST3j; YES), the reachability determination unit 9 determines that the charging facility is forward, backward, right side, left side with reference to the traveling direction of the host vehicle. In which direction the vehicle is located, count the number of charging facilities that the host vehicle can reach for each direction, and update the count value of the number of charging facilities in the charging facility information table of the memory 11 for each direction ( Step ST4j). The direction of each charging facility is defined as a direction based on the traveling direction of the host vehicle when stopping at the current stop position (stopping for the charging facility).
Further, if the charging facility is not within the reachable range of the host vehicle (step ST3j; NO), the reachability determination unit 9 discards information on the charging facility from the memory 11 (step ST5j).

Thereafter, the reachability determination unit 9 determines whether or not the above processing has been completed for all the charging facilities stored in the memory 11 (step ST6j). Here, if the processing of all the charging facilities has not been completed (step ST6j; NO), the reachability determination unit 9 returns to the processing of step ST2j and selects the unprocessed charging facilities stored in the memory 11. Read and repeat the process from step ST2j to step ST6j.

On the other hand, if the processing of all the charging facilities stored in the memory 11 is completed (step ST6j; YES), the reachability determination unit 9 determines the reachable charging facility information and the number of reachable charging facilities. (Initial values COf, COb, COr, COl) are stored in the charging equipment information table of the memory 11 for each direction (step ST7j).
Further, the reachability determination unit 9 sets the warning numbers CWf, CWb, CWr, CWl for each direction according to the initial values COf, COb, COr, COl for each direction of the number of charging facilities that the host vehicle can reach, It memorize | stores in the charging equipment information table of the memory 11 (step ST8j).
Here, as in the fifth embodiment, the number of warnings for each direction is determined based on the initial value (the number of charging facilities that the host vehicle can reach at the end of charging), and charging is performed together with the initial value as shown in FIG. Store in the equipment information table. Thereafter, the mode transits to the stop mode M1 (step ST9j).

(2c) Travel mode M5 (see FIG. 21)
When detecting the start of traveling of the host vehicle, the control unit 6 sequentially acquires the position of the host vehicle that moves by traveling and the traveling direction of the host vehicle from the position detection device 7, and the charging unit 4 reduces the charging that decreases due to power consumption. The remaining battery charge is sequentially acquired (step ST1k). At this time, the control unit 6 outputs the own vehicle position and traveling direction acquired from the position detection device 7 and the remaining charge amount acquired from the charge control unit 4 to the reachability determination unit 9 and stored in the memory 11. To determine whether or not the vehicle can reach the charging facility.

When the reachability determination unit 9 receives the execution notification of the reachability determination from the control unit 6, the reachability determination unit 9 reads the charging facility stored in the memory 11 (step ST2k). First, the direction in which the read charging facility is classified And based on the current traveling direction of the host vehicle, it is determined whether or not there is a change in the direction in which the charging facility is classified (step ST3k). If there is no change in the direction in which the read charging facility is classified (step ST3k; NO), the reachability determination unit 9 transitions to step ST5k.

When there is a change in the direction in which the charging facility is classified (step ST3k; YES), the reachability determination unit 9 confirms in which direction the charging facility is based on the current traveling direction of the host vehicle. Then, the number of charging facilities that the host vehicle can reach is counted for each direction, and the count values CNf, CNb, CNr, CNl in the charging facility information table of the memory 11 are updated (step ST4k).

For example, since the charging facility Pa shown in FIG. 19 is based on the traveling direction of the host vehicle, it is forward at the position A, rightward at the position B, and rearward at the position C. Therefore, the classification according to the direction of the charging facility is updated each time. Is done. Therefore, when the host vehicle moves from position A to position B, with respect to charging facility Pa, the number of forward charging facilities (CNf) becomes “−1” and the number of charging facilities on the right side (CNr) becomes “+1”. Become. At position C, the number of charging facilities on the right side (CNr) is “−1” and the number of charging facilities on the rear side (CNb) is “+1”.

Next, the reachability determination unit 9 determines whether or not the charging facility is within the reachable range of the host vehicle from the current position with the notified remaining charge amount (step ST5k). Here, when the host vehicle is within the reachable range (step ST5k; YES), the reachability determination unit 9 transitions to step ST7k.
If it is determined that the host vehicle is not within the reachable range (step ST5k; NO), the reachability determination unit 9 counts the number of charging facilities that the host vehicle can reach for each direction, and the charging facility information table in the memory 11 The count values CNf, CNb, CNr, and CNl are updated (step ST6k).

Subsequently, the control unit 6 determines whether or not the above processing has been completed for all the charging facilities stored in the memory 11 (step ST7k). Here, if the processing of all the charging facilities is not completed (step ST7k; NO), the processing from step ST1k to step ST7k is repeated for the unprocessed charging facilities stored in the memory 11.

On the other hand, if the processing of all the charging facilities stored in the memory 11 has been completed (step ST7k; YES), the control unit 6 counts the number of charging facilities for each direction updated by the reachability determination unit 9. It is determined whether or not the value is less than or equal to a preset number of warnings CWf, CWb, CWr, CWl for each direction (step ST8k). At this time, if the number of charging facilities exceeds the number of warnings (step ST8k; NO), the process proceeds to step ST10k.
When any one of the count values CNf, CNb, CNr, CNl becomes equal to or less than the warning number CWf, CWb, CWr, CWl for each direction (step ST8k; YES), the control unit 6 instructs the display control unit 12 to To instruct the charging equipment in the corresponding direction to display a warning. Thereby, the display apparatus 13 displays the warning of the said charging equipment by control of the display control part 12 (step ST9k), and changes to step ST10k.

Thereafter, the control unit 6 determines whether or not the host vehicle has stopped based on the same information as the detection of the start of travel (step ST10k). Here, if it is determined that the host vehicle is stopped (step ST10k; YES), the process proceeds to the stop mode M1 (step ST11k). If the host vehicle is traveling (step ST10k; NO), the process returns to step ST1k. The process of each step described above is repeated.

As described above, according to the sixth embodiment, the position of the charging facility set in the charging facility information table of the memory 11 is classified according to the direction based on the traveling direction of the host vehicle. It is possible to set the charging facility notification method for each direction based on the traveling direction of the host vehicle. Thereby, it is possible to preferentially notify the charging facility existing in the direction based on the traveling direction desired by the user.

Further, according to the sixth embodiment, the reachability determination unit 9 updates the direction of the charging facility based on the traveling direction of the host vehicle in accordance with the traveling of the host vehicle. Whether or not notification is possible can be determined by classifying the position of the charging facility for each direction while updating the change in the direction based on the traveling direction of the host vehicle.

Embodiment 7 FIG.
The charging guidance device according to the seventh embodiment facilitates the extraction of destination candidates by setting the destination of the car navigation device using information on charging facilities that can be reached by the host vehicle stored in the memory. It is a thing.
The basic configuration of the charging guide device according to the seventh embodiment is the same as that described with reference to FIG. 1 in the first embodiment, and therefore, in the following description, refer to FIG. 1 for the device configuration. I decided to.

Similarly to the first to fifth embodiments, the control unit 6 according to the seventh embodiment has the number of charging facilities that the host vehicle can reach with the remaining charge amount in the driving mode M5 as the warning number CW or less. When this happens, the display control unit 12 is instructed to display a warning. As a result, a warning is displayed on the display device 13.
At this time, in the seventh embodiment, the control unit 6 instructs the display control unit 12 to display a guidance screen that recommends charging. Thereby, the display apparatus 13 displays the charging facility memorize | stored in the memory 11 as a destination setting screen of the car navigation apparatus 1 and the candidate of a destination according to control of the said display control part 12. FIG.

FIG. 22 is a diagram illustrating an example of a charging recommendation guidance screen according to the seventh embodiment. The control unit 6 determines that the number of charging facilities that the host vehicle can reach at the point A in FIG. This shows a case where it is detected that At this time, as shown in FIG. 8, the charging facilities that the host vehicle can reach are the charging facilities P0, P7, and P8. Therefore, the control unit 6 controls the display control unit 12 with the charging facilities P0, P7, and P8. Instructing to display a guidance screen that recommends charging with P8 as a destination candidate. Thereby, the display device 13 displays the guidance screen shown in FIG. 22 according to the control of the display control unit 12.

FIG. 23 is a diagram showing a screen in which the destination candidate charging facilities are superimposed on the map, and the destination facilities charging facilities P0, P7, and P8 in FIG. 22 are superimposed on the navigation screen map. Shows the case. As shown in FIG. 23, the visibility of the positions of the destination candidate and the host vehicle is improved by displaying the charging facility as the destination candidate in an overlapping manner on the map.
When the charging facility displayed on the screen is selected by an operation input using the input device 15, the operation control unit 14 detects the selection result of the charging facility and notifies the control unit 6. When the charging facility selection result is notified in this way, the control unit 6 sets the charging facility of the selection result as the destination of the car navigation device 1.

22 A soft button for selecting facility information of the charging facility is displayed on the screens of FIGS. By selecting the facility information soft button with the input device 15, the facility information display screen for the charging facility is displayed. The facility information may be related information described in the third embodiment. For example, the type of charging facility, the incidental facility of the charging facility (stores arranged in parallel with the charging facility, etc.), whether charging is charged There is a charge setting such as whether it is free, a price when paying, an available time, and a waiting time.

As described above, according to the seventh embodiment, the selection unit including the operation control unit 14 and the input device 15 that selects the charging facility notified by the notification unit including the display control unit 12 and the display device 13 is provided. The control unit 6 sets the charging facility selected by the selection unit as the destination of the car navigation device. By doing in this way, the guidance of the charging facility which the own vehicle can reach | attain to a user, and the route setting of the car navigation apparatus 1 can be performed easily.

Further, according to the seventh embodiment, the display device 13 displays the charging facilities stored in the memory 11 in a list format and notifies them under the control of the display control unit 12.
As described above, instead of extracting charging facility information from the database 10 at each notification, the charging facility information can be displayed promptly by displaying the charging facility information already extracted in the memory 11. Moreover, a plurality of charging facilities can be guided with high visibility by displaying in a list format.

When displaying charging facilities in a list format, related information (facility information, etc.) of charging facilities is displayed at the same time. By comprising in this way, the information for a user to select an appropriate charging equipment can be provided.

In the seventh embodiment, the map and the arrangement of the charging facility are displayed in a superimposed manner, and at the same time, the route having the charging facility as the destination is displayed. By doing in this way, a user can grasp | ascertain and utilize the position of a charging equipment easily.

When displaying the map and the charging equipment in a superimposed manner, the display form may be displayed differently according to the related information (facility information etc.) of the charging equipment. For example, the color or icon shape is changed according to the related information. Thereby, the user can easily grasp information that can be a determination material for selecting the charging facility and the position of the charging facility.

The charging guide device according to the present invention is capable of providing a driver with a sense of security related to charging by selecting a charging facility to be used from a plurality of charging facilities and detecting a charging facility that can be reached by the host vehicle. Therefore, it is suitable for a navigation device mounted on a vehicle driven by the power of a rechargeable battery.

Claims

A remaining charge detection unit for detecting the remaining charge of the rechargeable battery for driving the vehicle;
A position information detector for detecting position information of the host vehicle;
A database unit for storing charging equipment information including at least position information of the charging equipment; and
An extraction unit for extracting charging facility information from the database unit;
According to the remaining charge amount of the host vehicle detected by the remaining charge detection unit and the position of the host vehicle detected by the position information detection unit, the charging facility information extracted by the extraction unit is automatically detected. A determination unit for determining whether the vehicle is reachable;
An informing unit for informing a user;
The own vehicle determined by the determination unit arrives according to the remaining charge amount during traveling of the own vehicle detected by the remaining charge detection unit and the position change of the own vehicle detected by the position information detection unit. A charging guide device comprising: a control unit that controls the notification unit so as to notify a user when the number of possible charging facilities becomes a reference value or less.
A charging facility storage unit for storing charging facility information extracted from the database unit by the extraction unit;
The extraction unit extracts charging facility information of a charging facility that can be reached by the host vehicle from the database unit according to a remaining charge amount and a position of the host vehicle during charging of the rechargeable battery for driving, and stores the charging facility. The charging guide device according to claim 1, wherein the charging guide device is stored in a storage unit.
The charging guide device according to claim 1, wherein the notification by the notification unit includes any one of charging recommendation, a charging warning, and a guidance display to a charging facility.
3. The charging guidance device according to claim 2, wherein the notification by the notification unit is a display of a list of charging facilities that can be reached by the host vehicle stored in the charging facility storage unit.
The charging facility information includes information related to the charging facility,
5. The charging guidance device according to claim 4, wherein the notification unit also displays related information of the charging facility when displaying the charging facility in a list format. 6.
The charging guide device according to claim 2, wherein the notification by the notification unit is a display in which charging facilities that can be reached by the host vehicle stored in the charging facility storage unit are superimposed on a map.
The charging facility information includes information related to the charging facility,
7. The charging guide device according to claim 6, wherein the notification unit changes a display form of the charging facility in accordance with related information of the charging facility when displaying the charging facility on a map in an overlapping manner. .
The determination unit
Provided with a plurality of determination methods for determining whether or not the vehicle can reach the charging facility,
The charging guide device according to claim 1, wherein when the number of charging facilities for determining whether or not the host vehicle is reachable is large, the determination is performed by a simple determination method as compared with the case where the number of charging facilities is small.
Provided with a wired or wireless connection with a communication unit outside the vehicle or a communication device outside the vehicle,
The charging guide device according to claim 1, wherein the charging facility information stored in the database unit is updated by communication with outside the vehicle.
A running state detection unit that detects the running state of the host vehicle,
The charging guide device according to claim 9, wherein the charging facility information is updated when the host vehicle detected by the traveling state detection unit stops.
An input unit that outputs an operation signal corresponding to the user's operation is provided.
The charging guide device according to claim 9, wherein the charging facility information is updated based on the operation signal from the input unit.
The charging facility information includes information related to the charging facility,
2. The charging guide device according to claim 1, wherein the related information includes any one of a type of charging equipment, a usable time zone, an auxiliary equipment of the charging equipment, a usage price, and a waiting time for charging. .
The charging facilities are classified according to the related information,
The determination unit counts the number of charging facilities that the host vehicle can reach for each classification,
The charging guide device according to claim 12, wherein a reference value for performing notification by the notification unit is set for each of the classifications.
The charging guide according to claim 13, wherein the control unit determines whether to perform notification by the notification unit and sets the reference value for each classification based on the related information of the charging facility. apparatus.
A charging facility storage unit for storing charging facility information extracted from the database unit by the extraction unit;
When the number of charging facilities that can be reached by the host vehicle stored in the charging facility storage unit is less than a first reference value, the control unit determines a second reference value that is smaller than the first reference value. The charging guide device according to claim 1, wherein the charging guide device is set as a reference value.
A charging facility storage unit for storing charging facility information extracted from the database unit by the extraction unit;
The charging facility storage unit classifies and stores the charging facility according to the position of the charging facility,
The determination unit updates the number of charging facilities that can be reached by the host vehicle stored in the charging facility storage unit for each classification.
The charging guide device according to claim 1, wherein the control unit determines whether to perform notification by the notification unit with a reference value set for each classification.
The charging guide device according to claim 16, wherein the charging facility storage unit classifies and stores the position of the charging facility according to a direction.
The charging guide device according to claim 16, wherein the charging facility storage unit classifies and stores the position of the charging facility according to a direction based on a traveling direction of the host vehicle.
19. The charging guide device according to claim 18, wherein the determination unit updates the direction of the charging facility based on the traveling direction of the host vehicle according to the traveling of the host vehicle.
A selection unit that selects a charging facility that has been notified by the notification unit;
The charging control device according to claim 1, wherein the control unit sets the charging facility selected by the selection unit as a destination of a car navigation device.