Method for acquiring electronic certificate and method for setting charge

Abstract

To more reliably charge a power storage device mounted on a vehicle with electric power from a charging device installed at a charging station.SOLUTION: A method for acquiring an electronic certificate comprises: a first step of determining, on the basis of a travel route from a current location to a destination and a location of the charging station, whether or not an electronic certificate can be acquired by wireless communication using a communication device before a vehicle arrives at a charging station; and a second step of acquiring, when it is determined that the electronic certificate can be acquired by wireless communication using the communication device before the vehicle arrives at the charging station, the electronic certificate by wireless communication using the communication device before the vehicle arrives at the charging station.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a method for acquiring an electronic certificate and a method for setting charges.

Background Art

[0002] Conventionally, as a method for acquiring an electronic certificate of this type, in a vehicle including a power storage device (rechargeable battery), a storage device capable of storing information, and a communication device (in-vehicle communication device) that wirelessly exchanges information with the outside, when charging the power storage device with power from a charging device (charging facility) installed in a charging stand (charging station), a method has been proposed of acquiring an electronic certificate used at that time and storing it in a storage device (memory) (see, for example, Patent Document 1). In this method, when the user operates a terminal device carried by the user, the electronic certificate is acquired from a server outside the vehicle via the communication device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above-described method for acquiring an electronic certificate, when the user does not carry a terminal device, the electronic certificate cannot be acquired. In this case, even if the vehicle arrives at the charging stand, the charging device installed in the charging stand cannot be used, and the power storage device cannot be charged.

[0005] The main object of the method for acquiring an electronic certificate and the method for setting charges according to the present disclosure is to more reliably charge the power storage device mounted on the vehicle with power from a charging device installed in a charging stand.

Means for Solving the Problems

[0006] The method for obtaining an electronic certificate and the charging setting method of the present disclosure have adopted the following means to achieve the above-mentioned main purpose.

[0007] The first method for obtaining an electronic certificate of the present disclosure is In a vehicle including a power storage device and a communication device that exchanges information at least by wireless communication, an electronic certificate acquisition method for acquiring an electronic certificate used when charging the power storage device with power from a charging device installed at a charging stand, A first step of determining whether the electronic certificate can be acquired by the wireless communication using the communication device before the vehicle arrives at the charging stand based on the driving route from the current location to the destination and the position of the charging stand; When it is determined that the electronic certificate can be acquired by the wireless communication using the communication device before the vehicle arrives at the charging stand, a second step of acquiring the electronic certificate by the wireless communication using the communication device before the vehicle arrives at the charging stand; The gist is to include the above.

[0008] In the first method for obtaining an electronic certificate of the present disclosure, based on the driving route from the current location to the destination and the position of the charging stand, it is determined whether the electronic certificate can be acquired by the wireless communication using the communication device before the vehicle arrives at the charging stand. And when it is determined that the electronic certificate can be acquired by the wireless communication using the communication device before the vehicle arrives at the charging stand, the electronic certificate is acquired by the wireless communication using the communication device before the vehicle arrives at the charging stand. Thereby, the electronic certificate can be acquired before the vehicle arrives at the charging stand. As a result, the power storage device mounted on the vehicle can be more reliably charged with the power from the charging device installed at the charging stand.

[0009] The second method for obtaining an electronic certificate of the present disclosure is In a vehicle including a power storage device, an electronic certificate acquisition method for acquiring an electronic certificate used when charging the power storage device with power from a charging device installed at a charging stand, When the number of times of failure to obtain the electronic certificate from the charging device in the past is less than a predetermined number of times, the electronic certificate is obtained from the charging device after arriving at the charging stand. This is the gist.

[0010] According to the second method for obtaining an electronic certificate of the present disclosure, when the number of times of failure to obtain the electronic certificate from the charging device in the past is less than a predetermined number of times, the electronic certificate is obtained from the charging device after arriving at the charging stand. When the number of times of failure to obtain the electronic certificate from the charging device in the past is less than a predetermined number of times, it is considered that it is unlikely that the acquisition of the electronic certificate from the charging device will fail. Therefore, when the number of times of failure to obtain the electronic certificate from the charging device in the past is less than a predetermined number of times, by obtaining the electronic certificate from the charging device after arriving at the charging stand, the electronic certificate can be obtained more reliably. As a result, the power storage device mounted on the vehicle can be more reliably charged with the power from the charging device installed at the charging stand.

[0011] The charging setting method of the present disclosure is A charging setting method for setting a charging method when charging the power storage device with the power from a charging device installed at a charging stand in a vehicle including a power storage device and a communication device that exchanges information at least by wireless communication, A first step of determining whether it is possible to obtain an electronic certificate used when charging the power storage device with the power from the charging device by the wireless communication using the communication device before the vehicle arrives at the charging stand based on the driving route from the current location to the destination and the position of the charging stand; When it is determined that the electronic certificate can be obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, the electronic certificate is obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, and the charging method is set to the first method of charging using the obtained electronic certificate. When it is determined that the electronic certificate cannot be obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, a second step of setting the charging method to a second method of charging without using the electronic certificate is performed. The gist is to include the following.

[0012] In this charging setting method of the present disclosure, based on the driving route from the current location to the destination and the position of the charging stand, it is determined whether it is possible to obtain an electronic certificate used when charging a power storage device with power from a charging device by wireless communication using a communication device before the vehicle arrives at the charging stand. When it is determined that the electronic certificate can be obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, the electronic certificate is obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, and the charging method is set to the first method of charging using the obtained electronic certificate. Therefore, the power storage device mounted on the vehicle can be more reliably charged with the power from the charging device installed at the charging stand. Also, when it is determined that the electronic certificate cannot be obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, the charging method is set to the second method of charging without using the electronic certificate. Thereby, when the electronic certificate cannot be obtained by the wireless communication using the communication device, the power storage device mounted on the vehicle can be charged with the power from the charging device installed at the charging stand. As a result, the power storage device mounted on the vehicle can be more reliably charged with the power from the charging device installed at the charging stand.

[0013] In such a charging setting method of the present disclosure, when it is determined in the second step that the electronic certificate cannot be obtained by the wireless communication using the communication device until the vehicle arrives at the charging stand, if the number of failures in obtaining the electronic certificate from the charging device in the past is less than a predetermined number, when the vehicle arrives at the charging stand, the electronic certificate is obtained from the charging device thereafter, and the charging method is set to the first method. When the number of failures is equal to or more than the predetermined number, the charging method may be set to the second method. When the number of failures in obtaining the electronic certificate from the charging device in the past is less than a predetermined number, it is considered that it is unlikely that the acquisition of the electronic certificate from the charging device fails. Therefore, when the number of failures in obtaining the electronic certificate from the charging device in the past is less than a predetermined number, by obtaining the electronic certificate from the charging device after arriving at the charging stand, the electronic certificate can be obtained more reliably. And since the charging method is set to the first method, that is, the method of paying the charging fee using the obtained electronic certificate, the charging method can be set more appropriately. In addition, when the number of failures in obtaining the electronic certificate from the charging device in the past is equal to or more than a predetermined number, it is considered that the acquisition of the electronic certificate from the charging device is likely to fail. In this case, since the charging method is set to the second method, that is, the method of paying the charging fee without using the obtained electronic certificate, an appropriate charging method can be set even when the electronic certificate cannot be obtained. As a result, the power storage device mounted on the vehicle can be more reliably charged with the power from the charging device installed at the charging stand.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0015] Next, embodiments for carrying out the invention of the present disclosure will be described with reference to the drawings.

[0016] FIG. 1 is a schematic configuration diagram showing a vehicle charging system 1 of the present disclosure. The vehicle charging system 1 shown in the figure includes a charging device 2 capable of charging a battery B of an electric vehicle V from the outside, a management server 3, and an authentication server 4.

[0017] In addition to the battery B as a power storage device, the electric vehicle V is a battery electric vehicle (BEV) or a plug-in hybrid vehicle (PHEV) including a motor MG that exchanges power with the battery B via a power control unit (PCU) not shown in the figure. In addition to the battery B and the motor MG2, the electric vehicle V includes a communication device DCM capable of wireless communication with the authentication server 4, a navigation device NAVI, and an electronic control unit ECU that controls the motor MG and the communication device DCM.

[0018] Although not shown in the figure, the navigation device NAVI includes a main body with a built-in control unit, a GPS antenna that receives information on the current location of the vehicle, and a touch panel display. The control unit of the main body has a storage medium (for example, a hard disk or an SSD) in which map information and the like are stored, an input / output port, and a communication port. In the map information, service information such as charging stations 10 and parking lots, and road information for each driving section (for example, between traffic lights and between intersections) are stored as a database. When a destination is set by the user's operation of the display, the control unit of the main body of the navigation device NAVI sets a driving route from the current location of the vehicle to the destination based on the map information stored in the main body, the current location of the vehicle from the GPS antenna, and the destination, and displays the set driving route on the display to provide route guidance.

[0019] The electronic control unit ECU includes a computer (not shown in the figure) having a CPU, a ROM, a RAM, an input / output port, a communication port, etc. The electronic control unit ECU controls the motor MG. The electronic control unit ECU exchanges information with the communication device DCM and the navigation device NAVI via a communication port.

[0020] The charging device 2 is installed in a so-called charging stand 10. As shown in FIG. 1, the charging device 2 includes a housing 20, a charging cable 22 including a charging connector 21, a power conversion device (electrical equipment) 23, a communication device 24, and an electronic control unit (hereinafter referred to as "ECU") 25 as a charging control device. The charging cable 22 includes a positive power supply line connected to the positive terminal of the charging connector 21, a negative power supply line connected to the negative terminal of the charging connector 21, and a communication line connected to the signal terminal of the charging connector 21. Further, the charging cable 22 is connected to the power conversion device 23.

[0021] In the present embodiment, the power conversion device 23, the communication device 24, and the ECU 25 are arranged inside the housing 20. The power conversion device 23 has a rectifier circuit, a transformer, a switching circuit, etc., and converts AC power supplied from an AC power source such as a commercial power source into DC power. When the charging connector 21 is inserted into the charging inlet I of the electric vehicle V, the power conversion device 23 is electrically connected to the charging inlet I via the charging cable 22 and the charging connector 21. The communication device 24 exchanges various information with a management server 3 etc. shown in FIG. 1 by wireless communication.

[0022] The ECU 25 of the charging device 2 includes a computer (not shown) having a CPU, ROM, RAM, etc. When the charging connector 21 is inserted into the charging inlet I of the electric vehicle V and the relay of the electric vehicle V is closed, the ECU 25 controls the power conversion device 23 based on the detection values of a current sensor, a voltage sensor, etc. (all not shown). Thereby, the battery B of the electric vehicle V is charged by the power (DC power) from the charging device 2, that is, the power conversion device 23. Further, when the charging connector 21 is inserted into the charging inlet I of the electric vehicle V, the ECU 25 exchanges information with the electronic control unit ECU of the electric vehicle V via the communication line of the charging cable 22.

[0023] Furthermore, the charging device 2 includes a display device 26 such as a liquid crystal display. The display device 26 is attached to the housing 20 and is controlled by the ECU 25. The ECU 25 causes the display device 26 to display information for the user of the electric vehicle V parked in the parking space of the charging stand 10. The information displayed on the display device 26 includes usage guidance for the charging device 2 and payment (billing) guidance for the charging fee by cash or credit card.

[0024] The management server 3 is installed and managed by, for example, the operating company of the charging stand 10, and functions as a management device that manages the usage status of a large number of charging devices 2, the payment status of the charging fee, etc. in cooperation with the ECU 25 of the charging device 2. The management server 3 performs payment authentication in cooperation with the ECU 25 of the charging device 2. The management server 3 includes a computer (not shown) having a CPU, ROM, RAM, input / output devices, etc., a communication device 31, and a storage device 32. As shown in FIG. 1, a management module 35 is constructed in the management server 3 by the cooperation of hardware such as a CPU, ROM, and RAM and a program installed in advance.

[0025] The communication device 31 exchanges various information with the communication device 24 of the charging device 2, the authentication server 4, etc. by wireless or wired communication. The storage device 32 stores a database that associates the usage status (usage history) of the charging device 2, the payment status of the charging fee, vehicle identification information of a large number of vehicles including the electric vehicle V, and / or user identification information of the user of the electric vehicle V, etc. with the electronic certificate used when charging the battery B of the electric vehicle V at the charging stand 10. The vehicle identification information includes the vehicle identification number (chassis number) and vehicle number of the electric vehicle V. The user identification information includes the driver's license number of the user of the electric vehicle V, contact information such as a mobile phone number, and the user ID given to the user (owner) of the electric vehicle V by the vehicle manufacturer. The management module 35 executes the creation / updating process of the above database, extraction of information from the database, etc.

[0026] The authentication server 4 is installed and managed by, for example, a service provider company that provides services such as issuing electronic certificates, and functions as a certification authority that issues electronic certificates. The authentication server 4 includes a computer (not shown) having a CPU, ROM, RAM, input / output devices, etc., a communication device 41, and a storage device 42. The communication device 41 exchanges various information with the communication device 24 of the charging device 2 and the like through wireless or wired communication. Further, the communication device 41 exchanges various information with the communication device DCM of the electric vehicle V through wireless communication. The issued electronic certificates are stored in the storage device 42. The CPU of the authentication server 4 issues electronic certificates.

[0027] Next, the operation of the vehicle charging system 1 of the present disclosure, particularly the operation when charging the battery B of the electric vehicle V with the power from the charging device 2, will be described. FIG. 2 is a flowchart showing an example of a charging process routine executed by the electronic control unit ECU of the electric vehicle V. This routine is a flowchart exemplifying a routine executed by the cooperation of the navigation device NAVI and the electronic control device ECU of the electric vehicle V. This routine is started when a destination is set by the user's operation of the display of the navigation device NAVI. Note that when starting the execution of this routine, the electric vehicle V may be stopped or running.

[0028] When this routine is executed, the control unit of the main body of the navigation device NAVI sets a driving route from the current location of the vehicle to the destination based on the map information stored in the main body, the current location of the vehicle from the GPS antenna, and the destination (S100). When the electric vehicle V is stopped, when the driving route is set, the electric vehicle V starts driving by the user's operation or the like.

[0029] Subsequently, a recommended charging stand 10 on the driving route is searched for and set (S110). When there are a plurality of charging stands 10 on the driving route, the closest charging stand 10 or the charging stand 10 suitable for the charging use of the electric vehicle V is set as the recommended charging stand 10.

[0030] The CPU of the electronic control unit ECU determines whether it is possible to obtain an electronic certificate from the authentication server 4 by wireless communication via the communication device DCM until it arrives at the charging stand 10 searched in S110 (S120). In S120, when the wireless communication with the authentication server 4 is interrupted, such as when normal wireless communication cannot be performed between the authentication server 4 and the communication device DCM, or when there is a history of failed wireless communication with the authentication server 4 during travel on the same travel route in the past, it is determined that the electronic certificate cannot be obtained from the authentication server 4. When the electric vehicle V starts to travel while S120 is being executed, the process of S120 is a process of determining whether it is possible to obtain an electronic certificate by wireless communication using the communication device DCM on the travel route until the electric vehicle V arrives at the charging stand 10. When it is possible to obtain an electronic certificate by the time of arriving at the charging stand 10 in S120, the electronic certificate is obtained from the authentication server 4 by wireless communication via the communication device DCM (S140). In this way, since the electronic certificate is obtained from the authentication server 4 by wireless communication when it is possible to obtain the electronic certificate by the time of arriving at the charging stand 10, the electronic certificate can be obtained more reliably. Then, the charging method when charging the battery B of the electric vehicle V with the power from the charging device 2 is set to the first method (S160). The first method is a method of authenticating the electric vehicle V using the electronic certificate and performing charging when charging the battery B of the electric vehicle V with the power from the charging device 2.

[0031] If it is determined at S120 that the electronic certificate cannot be obtained, it is determined whether or not an attempt has been made to obtain the electronic certificate from the charging device 2 installed in the charging stand 10 searched at S110 in the past and failed (S130). At S130, when the number of times of attempting to obtain the electronic certificate from the charging device 2 installed in the charging stand 10 searched at S110 in the past is equal to or greater than a predetermined number of times (for example, 2 times, 3 times, 4 times, etc.), it is determined that the acquisition of the electronic certificate has failed. When the number of times of attempting to obtain the electronic certificate from the charging device 2 installed in the charging stand 10 searched at S110 in the past is less than the predetermined number of times, it is determined that the acquisition of the electronic certificate has not failed. When it is determined at S130 that the acquisition of the electronic certificate from the charging device 2 has not failed in the past, it is set to obtain the electronic certificate from the charging device 2 when connected to the charging device 2 (S150), and the charging method when charging the battery B of the electric vehicle V with the power from the charging device 2 via the charging cable 22 is set to the first method (S160). When it is determined at S130 that the acquisition of the electronic certificate from the charging device 2 has failed in the past, the charging method when charging the battery B of the electric vehicle V with the power from the charging device 2 is set to the second method (S170). The second method is a method of charging with cash, credit card, etc. without using the electronic certificate when charging the battery B of the electric vehicle V with the power from the charging device 2.

[0032] Subsequently, the electric vehicle V arrives at the charging stand 10, the charging connector 21 is inserted into the charging inlet I of the electric vehicle V, and it waits until it is connected to the charging device 2 via the communication line of the charging cable 22 and can exchange information with each other (S180). When the electric vehicle V is connected to the charging device 2, the charging method set in S160 or S170 is transmitted to the ECU 25 of the charging device 2 via the communication line of the charging cable 22 (S190). The ECU 25 that has received the charging method waits until an electronic certificate is transmitted from the electric vehicle V or a request for obtaining an electronic certificate is received from the electric vehicle V when the charging method is the first method. When the charging method is the second method, the display device 26 is caused to display a guide on the payment method for the charging fee by cash or cashless payment, and it waits for an input from the user via the display device 26. When the user inputs cash as the payment method, authentication information indicating that the authentication has been completed is transmitted to the electronic control unit ECU of the electric vehicle V via the communication line of the charging cable 22. When a credit card is input as the payment method from the user, further, it waits for the input of user authentication information required for user authentication. Then, when the user authentication information is input via the display device 26, in cooperation with the management server 3, payment authentication is performed based on the user authentication information, and the authentication result is transmitted to the electronic control unit ECU of the electric vehicle V via the communication line of the charging cable 22.

[0033] Subsequently, it is determined whether the charging method is the first method (S200). When the charging method is the first method, it is determined whether an electronic certificate has been acquired (S210). When the electronic certificate has been acquired, the acquired electronic certificate is transmitted to the charging ECU 52 of the charging device 2 via the communication line of the charging cable 22 (S230). When the electronic certificate has not been acquired, the electronic certificate is acquired from the charging ECU 52 of the charging device 2 via the communication line of the charging cable 22 (S220). In the acquisition of the electronic certificate, the electronic control unit ECU first transmits a certificate acquisition request and vehicle identification information to the charging ECU 52 of the charging device 2 via the communication line of the charging cable 22. The charging ECU 5 that has received the certificate acquisition request and the vehicle identification information cooperates with the management module 35 of the management server 3 to acquire an electronic certificate corresponding to the vehicle identification information from the database stored in the storage device 32 of the management server 3, and transmits the electronic certificate to the electronic control unit ECU of the electric vehicle V via the communication line of the charging cable 22. The electronic control unit ECU thus acquires the electronic certificate. Then, the acquired electronic certificate is transmitted to the charging ECU 52 of the charging device 2 via the communication line of the charging cable 22 (S230). The charging ECU 52 of the charging device 2 that has received the electronic certificate cooperates with the management server 3 to perform payment authentication using the received electronic certificate, and transmits the authentication result to the electronic control unit ECU of the electric vehicle V via the communication line of the charging cable 22.

[0034] Based on the received authentication result, the electronic control unit ECU determines whether the payment (first method) has been authenticated (S240). When the payment has been authenticated, charging of the battery B of the electric vehicle V with the power from the charging device 2 is executed via the charging cable 22 (S250), and this routine ends. When the payment is not authenticated, this routine ends.

[0035] When the charging method is not the first method in S200, that is, when the charging method is the second method, it is determined whether the payment (second method) is authenticated (S240). When the payment is authenticated, charging of the battery B of the electric vehicle V by the power from the charging device 2 is executed (S250), and this routine ends. When the payment is not authenticated, this routine ends.

[0036] When a failure occurs in the communication between the charging device 2 of the charging stand 10 and the management server 3, even if the charging connector 21 is inserted into the charging inlet I of the electric vehicle V, it may not be possible to obtain an electronic certificate via the communication line of the charging cable 22, and it may not be possible to execute charging of the battery B by the power from the charging device 2 via the charging cable 22. In the vehicle charging system 1 of the present embodiment, it is determined whether it is possible to obtain an electronic certificate by wireless communication using the communication device DCM based on the driving route from the current location to the destination and the position of the charging stand 10. And when it is determined that an electronic certificate can be obtained by wireless communication using the communication device DCM before the electric vehicle V arrives at the charging stand 10, the electronic certificate is obtained by wireless communication using the communication device DCM. Thereby, it is possible to more surely obtain an electronic certificate before arriving at the charging stand 10, and it is possible to more surely charge the battery B mounted on the electric vehicle V with the power from the charging device 2.

[0037] Also, when it is determined that an electronic certificate cannot be obtained by wireless communication using the communication device DCM before the electric vehicle V arrives at the charging stand 10, when the number of failures to obtain an electronic certificate from the charging device 2 via the communication line of the charging cable 22 in the past is less than a predetermined number, after arriving at the charging stand 10 and the charging connector 21 is inserted into the charging inlet I of the electric vehicle V, an electronic certificate is obtained from the charging device 2, so that the electronic certificate can be obtained more surely. Therefore, it is possible to more surely charge the battery B with the power from the charging device 2 installed at the charging stand 10.

[0038] Also, when it is determined that an electronic certificate cannot be obtained by wireless communication using the communication device DCM until the electric vehicle V arrives at the charging stand 10, if the number of failures to obtain an electronic certificate from the charging device 2 in the past is less than a predetermined number, an electronic certificate is obtained from the charging device 2 after arriving at the charging stand 10, and the charging method is set to the first method. When the number of failures is equal to or more than the predetermined number, by setting the charging method to the second method, the battery B mounted on the electric vehicle V can be more reliably charged with the power from the charging device 2 installed at the charging stand 10.

[0039] In the above-described embodiment, when it is possible to obtain an electronic certificate from the authentication server 4 on the travel route until arriving at the charging stand 10 searched in S110 by wireless communication via the communication device DCM, the electronic certificate is obtained by wireless communication. The timing for obtaining the electronic certificate may be any timing as long as it is before arriving at the charging stand 10. Also, when the communication fee for obtaining the electronic certificate by wireless communication becomes high, it may be decided not to obtain the electronic certificate. Further, when the communication fee for obtaining the electronic certificate by wireless communication becomes high, a selection screen for selecting whether to obtain the electronic certificate is displayed on the display of the navigation device NAVI of the electric vehicle V or on the screen of the mobile terminal possessed by the user. When it is selected not to obtain the electronic certificate, the electronic certificate is not obtained, and when it is selected to obtain the electronic certificate, the electronic certificate may be obtained.

[0040] In the above-described embodiment, when it is not possible to obtain an electronic certificate from the authentication server 4 on the travel route until arriving at the charging stand 10 searched in S110 by wireless communication via the communication device DCM, it is determined in S130 whether the acquisition of the electronic certificate from the charging device 2 has failed in the past. However, when it is not possible to obtain an electronic certificate from the authentication server 4 on the travel route until arriving at the charging stand 10 searched in S110 by wireless communication via the communication device DCM without executing S130 and S150, the charging method may be set to the second method.

[0041] In the above-described embodiment, the travel route is set in S100 to S120, the charging stand 10 on the travel route is searched for, and it is determined whether an electronic certificate can be obtained from the authentication server 4 on the travel route by wireless communication via the communication device DCM until arriving at the charging stand 10 searched for in S110. However, without executing S100 to S120, it is determined in S130 whether the acquisition of the electronic certificate from the charging device 2 has failed in the past. When the acquisition of the electronic certificate has not failed, an electronic certificate may be obtained via the communication line of the charging cable 22 after the charging connector 21 is inserted into the charging inlet I of the electric vehicle V upon arrival at the charging stand 10.

[0042] In the above-described embodiment, when it is determined in S130 that the acquisition of the electronic certificate from the charging device 2 has failed in the past when the electronic certificate cannot be obtained from the authentication server 4 on the travel route by wireless communication via the communication device DCM until arriving at the charging stand 10 searched for in S110. However, when the electronic certificate cannot be obtained from the authentication server 4 on the travel route by wireless communication via the communication device DCM until arriving at the charging stand 10 searched for in S110, the history of obtaining the electronic certificate from the charging device 2 in the past is examined. When there is no history, an attempt may be made to obtain the electronic certificate from the charging device 2 via the communication line of the charging cable 22. In this case, whether the electronic certificate has been obtained or not and the position information of the charging stand 10 may be stored in the storage device of the electronic control unit ECU, or may be stored in the management server 3 via the charging device 2. Also, when there is no history of obtaining the electronic certificate from the charging device 2 in the past, the acquisition of the electronic certificate at that charging device 2 may be prohibited. Further, in S130, it may be determined whether the acquisition of the electronic certificate from the charging device 2 has failed in the past based on the history of obtaining the electronic certificate for other electric vehicles V in the past from the management server 3 via the charging device 2.

[0043] Note that the correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems is an example for specifically explaining the mode for carrying out the invention described in the column of means for solving the problems in the embodiment. Therefore, it does not limit the elements of the invention described in the column of means for solving the problems. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description in that column, and the embodiment is merely a specific example of the invention described in the column of means for solving the problems.

[0044] As described above, embodiments for carrying out the present disclosure have been explained. However, the present disclosure is not limited to such embodiments, and it goes without saying that it can be implemented in various forms without departing from the gist of the present disclosure.

Industrial Applicability

[0045] The present invention can be used in the manufacturing industry of products using an electronic certificate acquisition device, a charging setting device, and the like.

Explanation of Reference Numerals

[0046] 20 Vehicle charging system, 2 Charging device, 20 Housing, 21 Charging connector, 22 Charging cable, 23 Power conversion device, 24 Communication device, 25 Electronic control unit (ECU), 26 Display device, 27 Camera (imaging device), 3 Management server, 31 Communication device, 32 Storage device, 35 Management module, 10 Quick charging stand, B Battery, ECU Electronic control unit, I Charging inlet, V Electric vehicle.

Claims

1. In a vehicle including a power storage device and at least a communication device that exchanges information by wireless communication, an electronic certificate acquisition method for acquiring an electronic certificate used when charging the power storage device with power from a charging device installed at a charging stand, a first step of determining whether it is possible to acquire the electronic certificate by the wireless communication using the communication device before the vehicle arrives at the charging stand based on a travel route from the current location to the destination and the location of the charging stand; a second step of acquiring the electronic certificate by the wireless communication using the communication device before the vehicle arrives at the charging stand when it is determined that it is possible to acquire the electronic certificate by the wireless communication using the communication device before the vehicle arrives at the charging stand; An electronic certificate acquisition method comprising the above.

2. The electronic certificate acquisition method according to Claim 1, wherein in the second step, when it is determined that the electronic certificate cannot be acquired by the wireless communication using the communication device before the vehicle arrives at the charging stand, and when the number of failures to acquire the electronic certificate from the charging device in the past is less than a predetermined number, the electronic certificate is acquired from the charging device after arriving at the charging stand. An electronic certificate acquisition method.

3. In a vehicle including a power storage device, an electronic certificate acquisition method for acquiring an electronic certificate used when charging the power storage device with power from a charging device installed at a charging stand, when the number of failures to acquire the electronic certificate from the charging device in the past is less than a predetermined number, the electronic certificate is acquired from the charging device after arriving at the charging stand. An electronic certificate acquisition method.

4. In a vehicle including a power storage device and at least a communication device that exchanges information by wireless communication, a charging setting method for setting a charging method when charging the power storage device with power from a charging device installed at a charging stand, a first step of determining whether it is possible to acquire an electronic certificate used when charging the power storage device with power from the charging device by the wireless communication using the communication device before the vehicle arrives at the charging stand based on a travel route from the current location to the destination and the location of the charging stand; When it is determined that the electronic certificate can be obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, the electronic certificate is obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, and the charging method is set to the first method of charging using the obtained electronic certificate. When it is determined that the electronic certificate cannot be obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, a second step of setting the charging method to a second method of charging without using the electronic certificate; A charging setting method comprising the above.

5. The charging setting method according to claim 4, In the second step, when it is determined that the electronic certificate cannot be obtained by the wireless communication using the communication device before the vehicle arrives at the charging stand, if the number of failures to obtain the electronic certificate from the charging device in the past is less than a predetermined number, the electronic certificate is obtained from the charging device after the vehicle arrives at the charging stand, and the charging method is set to the first method. When the number of failures is equal to or more than the predetermined number, the charging method is set to the second method Charging setting method.

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