Fraudulent charging management method, fraudulent charging management device, and program

Abstract

A fraudulent charging management method according to an embodiment is used in a device that manages charging of an electric vehicle from a charging device, said method comprising: an authentication step (S12) for authenticating an identifier of the electric vehicle; a count step (S13) for, when authentication of the identifier fails, counting, in association with the identifier, the number of times unauthenticated charging, which is charging with the identifier that is invalid, has been performed in the electric vehicle; and a charging prohibition step (S16) for prohibiting the electric vehicle corresponding to the identifier in which said number of times has reached a prescribed threshold value or more from being subsequently charged from the charging device. This enables even a charging station that allows charging of an electric vehicle corresponding to an invalid identifier to detect an electric vehicle that is repeatedly fraudulently charged, prohibit charging, and reliably and stably charge a legitimate electric vehicle.

Description

Unauthorized charging management method, unauthorized charging management device, and program

[0001] The present disclosure relates to an unauthorized charging management method, an unauthorized charging management device, and a program.

[0002] Conventionally, the Open Charge Point Protocol (OCPP) is known as one of the standards for charging electric vehicles.

[0003] The OCPP stipulates that even if an electric vehicle is determined to have an invalid identifier (ID) as a result of authentication at a charging station, the charging station can be set to charge the electric vehicle with the minimum amount of energy so that the electric vehicle can drive away from the charging station. Hereinafter, charging of an electric vehicle with an invalid ID will be defined as "invalid authentication charging" in the following explanation.

[0004] Japanese Patent Application Laid-Open No. 2006-262570

[0005] However, the above regulations state whether charging is permitted, but do not state the number of times charging is permitted. As a result, at charging stations that allow charging of electric vehicles with invalid identifiers (invalidated charging), it has been possible to repeatedly perform invalidated charging of electric vehicles with invalid identifiers.

[0006] If such unauthorized charging were to occur repeatedly, it would result in an unexpected power supply, which could lead to power instability or put pressure on authorized charging of other authorized electric vehicles corresponding to valid identifiers.

[0007] The present disclosure aims to provide an unauthorized charging management method, an unauthorized charging management device, and a program that detect electric vehicles that repeatedly charge illegally, even at charging stations that allow charging of electric vehicles corresponding to invalid identifiers, and prohibit charging, thereby enabling reliable and stable charging of legitimate electric vehicles.

[0008] In order to solve the above problem, an embodiment of the unauthorized charging management method is an unauthorized charging management method used in a device that manages charging from a charging device to an electric vehicle, and includes an authentication step of authenticating the identifier of the electric vehicle, a counting step of counting the number of times that authentication invalid charging, which is charging with the invalid identifier, has been performed on the electric vehicle in association with the identifier if the authentication of the identifier is invalid, and a charging prohibition step of prohibiting further charging from the charging device to the electric vehicle corresponding to the identifier where the number of times is equal to or greater than a predetermined threshold.

[0009] According to the present disclosure, even in a charging station that allows charging of an electric vehicle corresponding to an invalid identifier, it is possible to detect an electric vehicle that repeatedly charges illegally, prohibit charging, and reliably and stably charge a legitimate electric vehicle. Note that the effects described herein are not necessarily limited to those described herein, and may be any of the effects described in this specification.

[0010] FIG. 1 is a diagram showing an example of a schematic configuration of an EV charging station according to a first embodiment that charges an electric vehicle. FIG. 2 is a functional block diagram of the charging device. FIG. 3 is an explanatory diagram of an authentication list table in a storage unit 24 of the charging device 13. FIG. 4 is an explanatory diagram of an authentication invalid charging information table in the storage unit. FIG. 5 is a processing flowchart of the charging device according to the first embodiment. FIG. 6 is a sequence flowchart of the charging system according to the first embodiment when the EV ID is invalid. FIG. 7 is a diagram showing an example of a schematic configuration of a charging station according to a second embodiment that charges an EV. FIG. 8 is a functional block diagram of a charging station management server. FIG. 9 is a sequence flowchart of the charging system according to the second embodiment when the EV ID is invalid. FIG. 10 is a diagram showing an example of a schematic configuration of an EV charging system according to a third embodiment that charges an EV. FIG. 11 is a functional block diagram of a security monitoring server. FIG. 12 is an explanatory diagram of an authentication invalid charging information table in a storage unit of the security monitoring server. FIG. 13 is a processing flowchart of the EV charging system according to the third embodiment. Fig. 14 is an explanatory diagram of the relationship between the travel distance from the charging station where the first authentication-invalid charging was performed and the authentication-invalid charging allowance threshold. Fig. 15 is an explanatory diagram of a relationship table between the distance from the charging station where the first authentication-invalid charging was performed and the threshold for the number of authentication-invalid chargings. Fig. 16 is a sequence flowchart of the charging system of the third embodiment when the EV ID is invalid.

[0011] Hereinafter, an unauthorized charging management method, an unauthorized charging management device, and a program according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0012] [1] First Embodiment Fig. 1 is a diagram showing an example of the schematic configuration of a charging station according to a first embodiment for charging an electric vehicle. Hereinafter, an electric vehicle will be referred to as an EV (Electric Vehicle). As shown in Fig. 1 , a charging station 10 includes a charging and communication plug 12 and a charging device 13. Here, the charging device 13 charges the EV 11 via the charging and communication plug 12.

[0013] 2 is a functional block diagram of the charging device 13. The charging device 13 includes a charging control unit 21, an unauthorized charging detection unit 22, a communication unit 23, a storage unit 24, a display unit 25, and a communication network 26. When the charging device 13 charges the EV 11 via the charging / communication plug 12, the charging control unit 21 communicates with the EV 11 via the communication unit 23 and the charging / communication plug 12 to control the actual charging, such as the charging current, charging voltage, and amount of charging energy.

[0014] Prior to charging, the unauthorized charging detection unit 22 receives vehicle identification information (EV ID) corresponding to the EV 11 through communication via the communication unit 23 and the charging / communication plug 12, performs ID authentication by referring to an authentication list table described later, determines whether the ID is valid, and detects that unauthorized charging has occurred for an EV 11 with an invalid EV ID, and notifies the charging control unit 21 of this.

[0015] Furthermore, when the EV ID is invalid, the unauthorized charging detection unit 22 stores the number of times the ID authentication result is invalid in the memory unit 24 via the communication network 26 in association with the ID, and when the number of times the ID authentication result is invalid exceeds a predetermined threshold, the unauthorized charging detection unit 22 notifies the charging control unit 21 via the communication network 26 that charging of the EV 11 corresponding to the ID is prohibited.

[0016] The communication unit 23 operates as a communication interface between the EV 11 and the charging device 13. The storage unit 24 stores, in association with the EV ID, the ID status indicating whether the EV ID is valid or invalid and data on the number of charging attempts when authentication was invalid (data on the number of unauthorized charging attempts), in an authentication invalid charging information table (to be described later).

[0017] The display unit 25 displays operation guides, the status of the charging device 13 (for example, whether charging is possible), and various information. The communication network 26 enables communication between the charging control unit 21, the unauthorized charging detection unit 22, the communication unit 23, the storage unit 24, and the display unit 25.

[0018] 3 is an explanatory diagram of an authentication list table in the storage unit 24 of the charging device 13. The authentication list table 30 includes EV ID data 31, ID status data 32, and expiration date data 33.

[0019] The EV ID data 31 is uniquely assigned to each EV 11 and is data for identifying the EV 11. The ID status data 32 is data indicating whether the EV ID of the EV 11 identified by the EV ID data is valid or invalid.

[0020] The expiration date data 33 is data that stores information about the expiration date of the EV ID.

[0021] Next, the authentication-invalid charging information table will be described. Fig. 4 is an explanatory diagram of the authentication-invalid charging information table 35 in the storage unit 24 of the charging device 13. The authentication-invalid charging information table 35 includes EV ID data 36, ​​ID status data 37, and authentication-invalid charging count data 38.

[0022] The EV ID data 36 is uniquely assigned to each EV 11 and is data for identifying the EV 11. The ID status data 37 is data indicating whether the EV ID of the EV 11 identified by the EV ID data is valid or invalid.

[0023] The authentication invalid charging count data 38 counts and stores the number of times charging has been performed at a charging station when the ID status data 32 is "invalid." Thus, in the first embodiment, the charger 13 manages the authentication invalid charging count.

[0024] 5 is a processing flowchart of the charging device of the first embodiment. First, when the unauthorized charging detection unit 22 of the charging device 13 receives an ID authentication request and an EV ID from the EV 11 via the charging / communication plug 12 and the communication unit 23 (step S11), the unauthorized charging detection unit 22 starts ID authentication.

[0025] Next, the unauthorized charging detection unit 22 of the charging device 13 determines whether the notified EV ID is valid by referring to the authentication list table 30 (step S12). Specifically, the unauthorized charging detection unit 22 compares the expiration date stored in the expiration date data 33 corresponding to the EV ID with the actual date, and determines that the EV ID is valid if the actual date is before the expiration date. Conversely, the unauthorized charging detection unit 22 determines that the EV ID is invalid if the actual date is after the expiration date. Therefore, the unauthorized charging detection unit 22 of the charging device 13 can determine whether the EV ID is valid simply by inputting the EV ID. If the notified EV ID is determined to be valid in step S12 (step S12; Yes), the unauthorized charging detection unit 22 notifies the charging control unit 21 of this fact, and the charging control unit 21 controls to supply only a predetermined amount of power (step S15). In this case, the predetermined amount of power is the amount of power when the EV ID is valid.

[0026] If it is determined in step S12 that the notified EV ID is invalid (step S12; No), the unauthorized charging detection unit 22 refers to the memory unit 24 and adds 1 to the count value of the number of times charging has been performed in the EV with an invalid EV ID (number of times authentication has been invalidated charging) (step S13).

[0027] Next, the unauthorized charging detection unit 22 determines whether the number of times of authentication-invalid charging is less than the threshold value (step S14). If the number of times of authentication-invalid charging is less than the threshold value (step S14; Yes), the unauthorized charging detection unit 22 notifies the charging control unit 21 of this fact, and the charging control unit 21 controls the supply of power by a predetermined amount (step S15).

[0028] In this case, the predetermined amount of power is the amount of power when the EV ID is invalid, and is set to a minimum amount of power that is less than the amount of power when the EV ID is valid, in order to reduce the impact of unauthorized charging on the power supply of legitimate users with valid EV IDs.

[0029] 6 is a sequence flowchart of the charging system according to the first embodiment when the EV ID is invalid. First, in the charging station 10, the on-board charging controller (not shown) of the EV 11 detects that the charging and communication plug 12 is correctly connected and transmits an ID authentication request and the EV ID to the charging device 13 via the charging and communication plug 12 (step S21).

[0030] As a result, the unauthorized charging detection unit 22 of the charging device 13 receives the ID authentication request and the EV ID via the communication unit 23, and performs an ID status determination as to whether the received EV ID is valid or not based on the authentication list table 30 pre-stored in the memory unit 24 (step S22).

[0031] In this case, the unauthorized charging detection unit 22 of the charging device 13 determines that the received EV ID is invalid based on the authentication list table 30 stored in advance in the storage unit 24. As a result, the unauthorized charging detection unit 22 of the charging device 13 adds 1 to the count value of the number of times of authentication invalid charging stored in the number of times of authentication invalid charging data 38 in the authentication invalid charging information table 35 corresponding to the EV ID.

[0032] More specifically, if the count value of the number of times of authentication invalid charging stored in the authentication invalid charging count data 38 of the authentication invalid charging information table 35 corresponding to the EV ID is 0, that is, if this is the first time that the authentication invalid determination has been made for the EV ID, the unauthorized charging detection unit 22 of the charging device 13 adds 1 to the count value of the number of times of authentication invalid charging stored in the authentication invalid charging count data 38, so that the count value of the number of times of authentication invalid charging becomes 1.

[0033] Similarly, when the count value of the number of times of authentication-invalid charging corresponding to the EV ID is n, that is, when the authentication-invalid determination for the EV ID is the first, the unauthorized charging detection unit 22 of the charging device 13 adds 1 to the count value of the number of times of authentication-invalid charging stored in the authentication-invalid charging count data 38, so that the count value of the number of times of authentication-invalid charging = n + 1.

[0034] Next, the unauthorized charging detection unit 22 of the charging device 13 performs an unauthorized charging determination by determining whether the count value of the number of times of authentication invalid charging in the authentication invalid charging count data 38 after count value addition is equal to or greater than a predetermined threshold value (step S24).

[0035] If the count value of the number of times of authentication-invalid charging after the increment reaches or exceeds a predetermined threshold, the unauthorized charging detection unit 22 of the charging device 13 determines that the unauthorized charging is an abuse of authentication-invalid charging, notifies the charging control unit 21 of this fact, stops charging of the EV 11, sets the EV 11 to a charging prohibited state, and does not charge the EV 11 corresponding to the EV ID thereafter.

[0036] As described above, according to the first embodiment, even in a charging station that allows charging of an EV 11 corresponding to an invalid EV ID, i.e., charging without authentication, it is possible to detect an EV 11 that repeatedly charges illegally and prohibit charging, thereby enabling reliable and stable charging of legitimate EVs 11.

[0037] [2] Second embodiment Fig. 7 is a diagram showing an example of the schematic configuration of a charging station according to a second embodiment for charging an EV. In Fig. 6, the same components as those in Fig. 1 are denoted by the same reference numerals. Although the EV 11 does not constitute the charging station 50, the EV 11 is shown visiting the charging station 50 for ease of understanding.

[0038] 6 , the charging station 50 includes the charging and communication plug 12, a charging device 51, a power meter 52, a charging station management server 53, and a LAN 54. The charging device 51 charges the EV 11 via the charging and communication plug 12 under the control of the charging station management server 53.

[0039] Furthermore, the charging device 51 receives an authentication request from the EV 11 and vehicle identification information (EV ID) corresponding to the EV 11 via the charging / communication plug 12 and the communication unit 61, and transfers the information to the charging station management server 53 via the LAN 54. The power meter 52 measures the power consumed by the charging device 51 alone, and transmits the measured value to the charging station management server 53 via the LAN 54.

[0040] The charging station management server 53 controls the charging device 51, receives an authentication request for the EV 11 and vehicle identification information (EV ID) corresponding to the EV 11 from the charging device 51, performs ID authentication, determines whether the ID is valid, and if it determines that unauthorized charging satisfies predetermined conditions for an EV 11 with an invalid EV ID, prohibits charging by the charging device 51. As a result, in the second embodiment, the charging station management server 53 manages the number of authentication-invalid charging attempts.

[0041] 8 is a functional block diagram of the charging station management server 53. The charging station management server 53 includes a communication unit 61, a charging control instruction unit 62, an unauthorized charging detection unit 63, a storage unit 64, and a communication network 65. In this case, the storage unit 64 stores the authentication list table 30 shown in FIG. 3 and the authentication invalid charging information table 35 shown in FIG. 4.

[0042] The communication unit 61 operates as a communication interface between the EV 11 and the charging station management server 53, and between the charging device 51 or the power meter 52 and the charging station management server 53. The charging control instruction unit 62 transmits an instruction to the charging device 51 to control charging via the communication unit 61.

[0043] Prior to charging, the unauthorized charging detection unit 63 receives an authentication request acquired by the charging device 51 via the LAN 54 from the charging device 51 and vehicle identification information (EV ID) corresponding to the EV 11, performs ID authentication based on the authentication list table 30 stored in the memory unit 64, determines whether the ID is valid, and detects that unauthorized charging is occurring for an EV 11 with an invalid EV ID, and notifies the charging control instruction unit 62.

[0044] Furthermore, when the ID authentication result of the vehicle identification information (EV ID) corresponding to the EV 11 is invalid, the unauthorized charging detection unit 63 stores the number of times the ID authentication result is invalid in the authentication invalid charging information table 35 of the storage unit 64 in association with the ID via the communication network 65, and when the number of times the ID authentication result is invalid exceeds a predetermined threshold, the unauthorized charging detection unit 63 notifies the charging control instruction unit 62 to that effect via the communication network 65 in order to prohibit charging of the EV 11 corresponding to the ID. As a result, the charging control instruction unit 62 of the charging station management server 53 controls the charging device 51 via the LAN 54 to prohibit charging of the EV 11.

[0045] The storage unit 64 stores, in an authentication-invalid charging information table described later, an ID status indicating whether the ID is valid or invalid, data on the number of charging attempts when authentication is invalid (data on the number of improper charging attempts), and an authentication-invalid charging implementation charging station ID that identifies the charging device (charging station) when authentication is invalid, in association with the EV ID.

[0046] The communication network 65 allows communication between the communication unit 61 , the charge control instruction unit 62 , the unauthorized charging detection unit 63 and the storage unit 64 .

[0047] 9 is a sequence flowchart of the charging system according to the second embodiment when the EV ID is invalid. First, in the charging station 50, the onboard charging controller (not shown) of the EV 11 detects that the charging and communication plug 12 is properly connected. The onboard charging controller transmits an ID authentication request and an EV ID to the charging device 51 via the charging and communication plug 12 (step S31). The charging device 51 receives the ID authentication request and the EV ID and transfers the received ID authentication request and EV ID to the charging station management server 53 (step S32). The unauthorized charging detection unit 22 of the charging station management server 53 receives the ID authentication request and the EV ID via the communication unit 61, determines whether the received EV ID is valid based on the authentication list table 30 stored in advance in the storage unit 64, and notifies the charging device 51 of the authentication result via the communication unit 61 (step S33).

[0048] Upon receiving the notification of the authentication result, charging device 51 transmits a charging start request to charging station management server 53 regardless of the authentication result (step S34). In this case, unauthorized charging detection unit 63 determines that the received EV ID is invalid based on authentication list table 30 pre-stored in storage unit 64, and therefore adds 1 to the count value of the number of times of authentication invalid charging stored in authentication invalid charging count data 38 in authentication invalid charging information table 35 corresponding to the EV ID (step S35).

[0049] More specifically, if the count value of the number of times of authentication invalid charging stored in the authentication invalid charging count data 38 corresponding to the EV ID is n, that is, if this is the first time that authentication invalidity has been determined for the EV ID, 1 is added to the count value of the number of times of authentication invalid charging stored in the authentication invalid charging count data 38, so that the count value of the number of times of authentication invalid charging in the authentication invalid charging count data 38 becomes n+1. Next, the unauthorized charging detection unit 63 of the charging station management server 53 performs unauthorized charging determination by determining whether the count value of the number of times of authentication invalid charging stored in the authentication invalid charging count data 38 after the increment is equal to or greater than a predetermined threshold (step S36).

[0050] Then, when the count value of the number of times of authentication-invalid charging stored in the authentication-invalid charging count data 38 after the increment reaches or exceeds a predetermined threshold, the unauthorized charging detection unit 63 of the charging station management server 53 determines that the unauthorized charging is an abuse of authentication-invalid charging, and notifies the charging control instructing unit 62 to that effect. In response, the charging control instructing unit 62 notifies the charging device 51 of a charging request rejection response (step S37).

[0051] As a result, the charging device 51 enters a charging prohibited state and does not charge the EV 11 corresponding to that EV ID. Similarly, for the same EV 11, a charging request denial response is returned as long as the EV ID is invalid, so the charging device 51 enters a charging prohibited state from the next time onwards and does not charge the EV 11 corresponding to that EV ID.

[0052] As described above, according to the second embodiment, even in a charging station 50 that allows charging of an EV 11 corresponding to an invalid EV ID, i.e., authentication-invalid charging, the charging station management server 53 can detect an EV 11 that repeatedly charges illegally and prohibits charging, thereby enabling reliable and stable charging of legitimate EVs 11.

[0053] [3] Third Embodiment The third embodiment is an embodiment in which the charging station is controlled using an external security monitoring server.

[0054] Fig. 10 is a diagram showing an example of the schematic configuration of an EV charging system according to a third embodiment for charging an EV. In Fig. 10, the same components as those in Fig. 1 or 6 are denoted by the same reference numerals. In addition, although EV 11 does not constitute charging station 50, for ease of understanding, EV 11 is shown visiting charging station 71.

[0055] As shown in FIG. 10 , an EV charging system 70 includes a charging station 71 , an external network 72 , and a security monitoring server 73 .

[0056] 10 illustrates one charging station 71 and one security monitoring server 73 for ease of understanding, but in an actual EV charging system, multiple charging stations 71 are provided for security monitoring by one security monitoring server 73. That is, the security monitoring server 73 monitors the security of multiple charging stations 71 provided in different locations. That is, in the third embodiment, the security monitoring server 73 manages the number of times authentication invalid charging has occurred. Therefore, according to the third embodiment, all charging stations under the jurisdiction of the security monitoring server 73 are linked together, making it possible to more reliably prevent unauthorized charging.

[0057] The charging station 71 includes a charging and communication plug 12, a charging device 51, a power meter 52, a charging station management server 81, and an external communication device 82. Here, the charging station management server 81 is assumed to include the authentication list table 30 shown in Fig. 3. The charging device 51 charges the EV 11 via the charging and communication plug 12 under the control of the security monitoring server 73 and the charging station management server 81.

[0058] 11 is a functional block diagram of the security monitoring server 73. The security monitoring server 73 includes a communication unit 91, an unauthorized charging detection unit 92, a storage unit 93, and a communication network 94. The communication unit 91 performs communication interface operation with the charging station 71 via the external network 72.

[0059] Prior to charging, the unauthorized charging detection unit 92 receives vehicle identification information (EV ID) corresponding to the EV 11 from the charging device 51 through communication via the communication unit 91 and the external network 72, performs ID authentication, determines whether the ID is valid, and stores in the memory unit 93 the fact that unauthorized charging has occurred for the EV 11 whose EV ID is invalid.

[0060] Furthermore, when the ID authentication result of the vehicle identification information (EV ID) corresponding to the EV 11 is invalid, the unauthorized charging detection unit 92 stores the number of times the ID authentication result is invalid in the storage unit 93 via the communication network 94 in association with the ID, and when the number of times the ID authentication result is invalid exceeds a predetermined threshold, the unauthorized charging detection unit 92 notifies the charging station management server 81 to that effect via the communication unit 91, the external network 72, and the external communication device 82 in order to prohibit charging of the EV 11 corresponding to the ID.

[0061] The storage unit 93 stores, in association with the EV ID, an ID status indicating whether the ID is valid or invalid, data on the number of times charging was performed when authentication was invalid (data on the number of times unauthorized charging was performed), and an authentication-invalid charging implementation charging station ID that identifies the charging device (charging station) when authentication was invalid in an authentication-invalid charging information table 35A (see FIG. 12 ) described later.

[0062] Next, the authentication-invalid charging information table will be described. Fig. 12 is an explanatory diagram of the authentication-invalid charging information table 35A in the storage unit 93 of the security monitoring server 73. In Fig. 12, the same parts as in Fig. 4 are assigned the same reference numerals. The authentication-invalid charging information table 35A includes EV ID data 36, ​​ID status data 37, authentication-invalid charging count data 38, and authentication-invalid charging implementation charging station ID data 39.

[0063] The EV ID data 36 is uniquely assigned to each EV 11 and is data for identifying the EV 11. The ID status data 37 is data indicating whether the EV ID of the EV 11 identified by the EV ID data is valid or invalid.

[0064] The authentication-invalid charging count data 38 counts and stores the number of times charging has been performed at a charging station when the ID status data 37 is "invalid." The authentication-invalid charging execution charging station ID data 39 is data for identifying the charging station that actually performed the authentication-invalid charging. As a result, in the third embodiment, the security monitoring server 73 manages the authentication-invalid charging count.

[0065] Furthermore, by observing messages from the charging station management server 82, the unauthorized charging detection unit 92 of the security monitoring server 73, when observing the ID authentication result of the vehicle identification information (EV ID) corresponding to the EV 11 or a message indicating that the EV ID is invalid, stores the number of times that the ID authentication result is invalid in the authentication invalid charging information table 35A of the storage unit 93 in association with the ID via the communication network 65, and when the number of times that the ID authentication result is invalid exceeds a predetermined threshold, notifies the charging control instructing unit 62 to that effect via the communication network 65. As a result, the charging control instructing unit of the charging station management server 81 controls the charging device 51 via the LAN 54 to prohibit charging of the EV 11.

[0066] 13 is a processing flowchart of the EV charging system of the third embodiment. First, the charging device 51 receives an authentication request for the EV 11 and the EV ID corresponding to the EV 11 via the charging / communication plug 12, and transfers the request to the charging station management server 81 via the LAN 54. The power meter 52 measures the power consumed by the charging device 51 alone, and transmits the measured value to the charging station management server 81 via the LAN 54.

[0067] As a result, the charging station management server 81 refers to the authentication list table 30 and authenticates the EV ID (step S52).

[0068] Next, the charging station management server 81 determines whether the EV ID is valid based on the authentication result (step S53). If the EV ID is valid in the determination of step S53 (step S53; Yes), the charging station management server 81 notifies the charging device 51 and controls the charging device 51 to supply only a predetermined amount of power (step S59). In this case, the predetermined amount of power is the amount of power when the EV ID is valid.

[0069] Furthermore, the security monitoring server 73 constantly monitors the exchanges between the charging device 51 and the charging station management server 81, including the notification of the authentication result to the charging device 51. Therefore, in the determination of step S53, if the charging station management server 81 determines that the EV ID is invalid, notifies the charging device 51 of this, and a charging start request is made from the charging device 51 (step S53; No), the unauthorized charging detection unit 92 of the security monitoring server 73 adds 1 to the count value of the number of times of authentication-invalid charging corresponding to the EV ID in the storage unit 93 (step S54).

[0070] Next, the unauthorized charging detection unit 92 of the security monitoring server 73 determines whether or not this is the first unauthorized charging for the EV 11 (step S55). That is, the unauthorized charging detection unit 92 of the security monitoring server 73 determines whether or not the count value of the number of unauthorized charging attempts is 1.

[0071] If it is determined in step S55 that this is the first time that the EV 11 has been charged without authentication, a screen prompting the user to input the planned driving distance of the EV 11 is displayed on a display / input device (e.g., a touch panel display device) or a display device (e.g., a liquid crystal display) (not shown) of the charging device 51, and the user of the EV 11 is prompted to input the planned driving distance from the charging station 71 after charging at the charging station 71 via the display / input device or an input device (e.g., a keyboard) (step S56).

[0072] The reason for inputting the planned driving distance will now be described. When it is discovered that the EV ID is invalid (expired) while the EV 11 is traveling, or when there is a lead time to reactivate the invalid (expired) EV ID, it is assumed that the minimum distance required for travel (for example, the distance from the destination to the home) differs for each user of the EV 11.

[0073] Therefore, it is difficult to set a general number of times (authentication invalid charging tolerance threshold) that authentication invalid charging can be permitted before prohibiting authentication invalid charging due to detection of unauthorized charging.

[0074] Therefore, in the third embodiment, if it is found that the EV ID is invalid at the time of authentication accompanying the start of charging at a charging station, the location of the charging station where the initial charging will be performed is recorded at the time of the first authentication-invalid charging, the user is asked to input the planned mileage, and the number of times authentication-invalid charging is permitted before prohibiting authentication-invalid charging (authentication-invalid charging tolerance threshold) is set based on the input planned mileage, and detection is performed to obtain the minimum distance required for travel according to the user.

[0075] Fig. 13 is an explanatory diagram of the relationship between the travel distance from the charging station where the first authentication-invalid charging was performed and the authentication-invalid charging tolerance threshold. In Fig. 13, of the three circles C1 to C3, circle C1 is a circle with a radius of 10 km centered on the charging station CS0 where the first authentication-invalid charging was performed. Circle C2 is a circle with a radius of 30 km centered on the charging station CS0 where the first authentication-invalid charging was performed. Circle C3 is a circle with a radius of 50 km centered on the charging station CS0 where the first authentication-invalid charging was performed. Furthermore, symbols CS1 to CS13 each represent a charging station.

[0076] FIG. 14 is an explanatory diagram of a relationship table between the distance to the charging station where the first authentication-invalid charging was performed and the threshold value for the number of authentication-invalid charging attempts. The relationship table 40 includes charging station distance data 41 and authentication-invalid charging attempt threshold data 42. Here, the charging station distance data 41 corresponds to the input planned mileage, and the threshold value for the number of authentication-invalid charging attempts is set for the planned mileage range. For example, as shown in FIG. 14 , when the planned mileage is less than 10 km, the threshold value for the number of authentication-invalid charging attempts Th is 1; when the planned mileage is 10 km or more but less than 30 km, the threshold value for the number of authentication-invalid charging attempts Th is 3; when the planned mileage is 30 km or more but less than 50 km, the threshold value for the number of authentication-invalid charging attempts Th is 5; and when the planned mileage is 50 km or more, the threshold value for the number of authentication-invalid charging attempts Th is 7.

[0077] In this case, the charge amount for each authentication-invalid charging remains small as specified (for example, the distance that can be traveled with one authentication-invalid charging is approximately 5 km). Therefore, in the third embodiment, if the planned travel distance is longer than the distance that can be traveled with authentication-invalid charging, it is assumed that authentication-invalid charging will need to be performed multiple times at multiple charging stations, and the travel range is restricted by setting a threshold Th for the number of authentication-invalid charging attempts.

[0078] Specifically, as described above, when inputting the planned mileage, if the planned mileage is declared as being larger, the number of times authentication invalid charging can be obtained will be larger.

[0079] Therefore, in the case of authentication-invalid charging, the intention is to only allow movement away from the charging station CS0 where the initial authentication-invalid charging was performed, and the threshold Th is reduced if, for example, authentication-invalid charging is performed at one of the charging stations CS5 to CS9 in the area of ​​30 km or more but less than 50 km (threshold Th = 5), and then the vehicle returns to the area of ​​10 km or more but less than 30 km (threshold Th = 3) and attempts to perform authentication-invalid charging at one of the charging stations CS5 to CS9.

[0080] By configuring it in this way, if the planned driving distance is input and power is consumed by traveling back and forth within the same area, that is, if charging is not due to the minimum necessary movement, it is determined to be fraudulent charging.

[0081] Then, when the planned mileage is input, the unauthorized charging detection unit 92 of the security monitoring server 73 sets the initial value of the threshold value Th for the number of times of invalid charging that corresponds to the planned mileage (in the above example, one of 1, 3, 5, or 7 times) (step S57).

[0082] Next, the unauthorized charging detection unit 92 of the security monitoring server 73 determines whether the current number of times of authentication-invalid charging is equal to or less than the threshold value Th (step S58). More specifically, if this is the first time of authentication-invalid charging, the determination in step S58 indicates that the current number of times of authentication-invalid charging is equal to or less than the threshold value Th regardless of the planned mileage (step S58; Yes). Therefore, the unauthorized charging detection unit 92 of the security monitoring server 73 notifies the charging station management server 81 of this fact, and the charging station management server 81 controls the charging device 51 to supply only a predetermined amount of power (step S59). In this case, the predetermined amount of power is the amount of power when the EV ID is invalid.

[0083] Furthermore, if it is determined in step S55 that the invalid authentication charging is not the first time for the EV 11 (step S55; No), the input of the planned mileage has already been completed, so the unauthorized charging detection unit 92 of the security monitoring server 73 sets a threshold value Th according to the distance traveled from the charging station CS0 where the first invalid authentication charging was performed (step S57).

[0084] Specifically, in the example of Fig. 14, if the charging station at which EV11 is attempting to charge is charging station CS0 or charging station CS1, the threshold value Th is set to 1. If the charging station at which EV11 is attempting to charge is charging station CS2 to CS4, the threshold value Th is set to 3. If the charging station at which EV11 is attempting to charge is charging station CS5 to CS9, the threshold value Th is set to 5. If the charging station at which EV11 is attempting to charge is charging station CS10 to CS13, the threshold value Th is set to 7.

[0085] Next, the unauthorized charging detection unit 92 of the security monitoring server 73 determines whether the current number of times of authentication-invalid charging is equal to or less than the threshold value Th (step S58). More specifically, if the authentication-invalid charging is the second or subsequent time, and if the determination in step S58 is that the current number of times of authentication-invalid charging is equal to or less than the threshold value Th (step S58; Yes), the unauthorized charging detection unit 92 of the security monitoring server 73 notifies the charging station management server 81 of this fact, and the charging station management server 81 controls the charging device 51 to supply only a predetermined amount of power (step S59).

[0086] In this case, too, the predetermined amount of power is the amount of power when the EV ID is invalid. Furthermore, if it is determined in step S58 that the current number of times of authentication-invalid charging exceeds the threshold Th (step S58; No), the unauthorized charging detection unit 92 of the security monitoring server 73 notifies the charging station management server 81 of this fact, and the charging station management server 81 turns off (disables) the authentication-invalid charging function for the EV 11 and controls the charging device 51 not to perform subsequent authentication-invalid power supply (step S60).

[0087] 16 is a sequence flowchart of the charging system according to the third embodiment when the EV ID is invalid. First, when the onboard charging controller (not shown) of the EV 11 of the charging system 70 detects that the charging and communication plug 12 is correctly connected, the onboard charging controller transmits an ID authentication request and the EV ID to the charging device 51 via the charging and communication plug 12 of the EV 11 (step S71). The charging device 51 then receives the ID authentication request and the EV ID and transfers the received ID authentication request and the EV ID to the charging station management server 81 (step S72).

[0088] The charging station management server 81 authenticates the EV ID based on the received authentication request for the EV 11 and the EV ID corresponding to the EV 11, and notifies the authentication result (step S73).

[0089] At this time, the unauthorized charging detection unit 92 of the security monitoring server 73 monitors the exchange of information such as authentication results between the charging device 51 and the charging station management server 81 via the communication unit 91, and determines that the authentication result of the EV ID is invalid.

[0090] The charging device 51, which has received the notification of the authentication result, transmits a charging start request to the charging station management server 53 regardless of the authentication result (step S74). Meanwhile, the unauthorized charging detection unit 92 of the security monitoring server 73, which has determined that the EV ID authentication result is invalid, adds 1 to the count value of the number of times of authentication invalid charging stored in the authentication invalid charging count data 38 corresponding to the EV ID in the authentication invalid charging information table 35A of the storage unit 93 (step S75).

[0091] More specifically, when the count value of the number of times of authentication invalid charging stored in the authentication invalid charging count data 38 corresponding to the EV ID in the authentication invalid charging information table 35A in the storage unit 93 is equal to n, that is, when the authentication invalid determination for the EV ID is the first, the unauthorized charging detection unit 92 of the security monitoring server 73 adds 1 to the count value of the number of times of authentication invalid charging, so that the count value of the number of times of authentication invalid charging becomes n+1.

[0092] Next, the unauthorized charging detection unit 92 of the security monitoring server 73 causes the charging station management server 81 to display a screen on a display input device (not shown) of the charging device 51, prompting the user of the EV 11 to input the planned driving distance starting from the charging station 71 after charging at the charging station 71 (step S76).

[0093] Then, when the planned mileage is input into the charging device 51 and the planned mileage is notified (step S77), the fraudulent charging detection unit 92 of the security monitoring server 73 determines whether the count value of the number of times of invalid authentication charging after the addition is equal to or greater than a predetermined threshold, and determines whether fraudulent charging has occurred by exploiting invalid authentication charging (step S78).

[0094] Next, if the count value of the number of times of authentication-invalid charging stored in the authentication-invalid charging count data 38 after addition becomes equal to or greater than a predetermined threshold, the unauthorized charging detection unit 92 of the security monitoring server 73 determines that this is unauthorized charging that exploits authentication-invalid charging, and notifies the charging station management server 81 of this fact as an unauthorized charging detection notification.

[0095] As a result, the charging station management server 81 notifies the charging device 51 of a charging request denial response (step S79). As a result, the charging device 51 enters a charging prohibited state and does not charge the EV 11 corresponding to the EV ID.

[0096] Similarly, as long as the EV ID is invalid, a charge request denial response is sent to the same EV 11, and the charging device 51 similarly prohibits charging from the next time onwards and does not charge the EV 11 corresponding to that EV ID. As described above, according to the third embodiment, even if it is discovered that the EV ID is invalid (expired) while the EV 11 is away from home, or even if there is a lead time for reactivating an invalid (expired) EV ID, it is possible to provide as much energy as possible for the minimum amount of energy required for the minimum necessary movement for each user of the EV 11 whose EV ID is invalid, while providing appropriate charging to users whose EV IDs are valid.

[0097] Although the embodiments of the present disclosure have been described above, the above-described embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These novel embodiments and modifications thereof are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims.

[0098] Furthermore, the effects of the embodiments described in this specification are merely examples and are not limiting, and other effects may also be obtained.

[0099] Although not described in detail in the above embodiment, information regarding the validity / invalidity of the EV ID is stored in a memory unit of the device equipped with the unauthorized charging detection unit, but it is also possible to configure the information to be managed in an external EV ID management device, and for the unauthorized charging detection unit to make inquiries via a communication network.

[0100] Furthermore, if an EV ID for which authentication-invalid charging has been prohibited becomes valid later, the corresponding number of authentication-invalid charging attempts is reset and the prohibition on authentication-invalid charging is lifted.

[0101] The control unit of the charging device, the charging station management server, and the security monitoring server of the embodiment are equipped with a control device such as an MPU, a storage device such as a ROM (Read Only Memory) or a RAM, an external storage device such as an SSD or an HDD, a display device such as a display device, and input devices such as operation buttons and a keyboard, and have a hardware configuration that uses a normal computer.

[0102] The programs executed by the control unit of the charging device, the charging station management server, and the security monitoring server of this embodiment are provided as files in an installable format or an executable format recorded on a computer-readable recording medium such as a USB memory, a semiconductor storage device such as an SSD, or a DVD (Digital Versatile Disk).

[0103] The programs executed by the control unit of the charging device, the charging station management server, and the security monitoring server of this embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network.The programs executed by the control unit of the charging device, the charging station management server, and the security monitoring server of this embodiment may be provided or distributed via a network such as the Internet.

[0104] Furthermore, the programs for the control unit of the charging device, the charging station management server, and the security monitoring server of this embodiment may be provided in a state where they are pre-installed in a ROM or the like.

[0105] The programs executed by the control unit of the charging device, the charging station management server, and the security monitoring server in this embodiment are modular in structure, including the above-mentioned units (charging control unit, communication unit, unauthorized charging detection unit, etc.), and in actual hardware, the MPU (processor) reads and executes the programs from the above-mentioned storage medium, thereby loading the above-mentioned units onto the main memory device, and the charging control unit, communication unit, unauthorized charging detection unit, etc. are generated on the main memory device.

[0106] [Additional Note] The present embodiment can also be modified as follows. A first alternative aspect of the unauthorized charging management method is an unauthorized charging management method used in a device that manages charging of electric vehicles from charging devices, and includes: an authentication step of authenticating an identifier of the electric vehicle; a count step of, when the authentication of the identifier is invalid, counting, in association with the identifier, the number of times that authentication invalid charging, which is charging of the electric vehicle with the invalid identifier, has been performed; and a charging prohibition step of prohibiting subsequent charging from the charging device to the electric vehicle corresponding to the identifier when the number of times is equal to or greater than a predetermined threshold. According to this aspect, even in a charging station that allows charging of electric vehicles corresponding to invalid identifiers, an electric vehicle that repeatedly performs unauthorized charging can be detected and prohibited from being charged, thereby enabling reliable and stable charging of legitimate electric vehicles.

[0107] A second aspect of the present invention is the first aspect of the present invention, further comprising a charging step of performing the authentication invalid charging when the number of times is less than the threshold value. According to this aspect, even if an electric vehicle is charging illegally, it is possible to take into consideration a case where the illegal state is not necessarily intentional, and to enable the electric vehicle to move to a minimum extent.

[0108] In a third aspect, in the second aspect, the authentication-invalid charging is performed at a charging capacity that is less than the charging capacity when the authentication of the identifier is valid. According to this aspect, it is possible to suppress the influence on authorized electric vehicles.

[0109] A fourth alternative aspect of the present invention is the first alternative aspect of the present invention, further comprising: an input step of inputting a planned mileage from the charging device that performed the authentication-invalidated charging when the number of times the authentication-invalidated charging has been performed is 1; and a threshold setting step of setting the threshold based on the input planned mileage. According to this aspect, even if an electric vehicle is charging illegally, it is possible to take into consideration cases where the illegal state is not necessarily intentional, and to more reliably move the electric vehicle to a minimum extent.

[0110] In a fifth aspect, in the fourth aspect, the threshold setting step sets the threshold for each of a plurality of circular or ring-shaped regions defined by a plurality of circles having a radius corresponding to the planned mileage and centered on the charging device that performed the first authentication-invalidated charging, and the threshold is set so that it increases in the radial direction from the center. According to this aspect, it is possible to more reliably exclude electric vehicles that have intentionally entered an unauthorized charging state and suppress the impact on legitimate electric vehicles.

[0111] An unauthorized charging management device of a sixth aspect is an unauthorized charging management device that manages charging of an electric vehicle from a charging device, and includes: an unauthorized charging detection unit that, when an identifier of the electric vehicle is authenticated and the authentication of the identifier is invalid, counts the number of times that authentication invalid charging, which is charging of the electric vehicle with the invalid identifier, has been performed in association with the identifier; and a charging control unit that prohibits subsequent charging of the electric vehicle corresponding to the identifier when the number of times is equal to or greater than a predetermined threshold. According to this aspect, even a charging station that allows charging of an electric vehicle corresponding to an invalid identifier can detect an electric vehicle that repeatedly performs unauthorized charging and prohibit the charging, thereby ensuring reliable and stable charging of legitimate electric vehicles.

[0112] In a seventh aspect, the charging device according to the sixth aspect is further configured to perform the authentication invalid charging when the number of times is less than the threshold value. According to this aspect, even if an electric vehicle is charging illegally, it is possible to take into consideration cases where the illegal state is not necessarily intentional, and to enable the electric vehicle to move to a minimum extent.

[0113] In another aspect of the present invention, in the seventh aspect, the charging device performs the authentication-invalid charging at a charging capacity that is smaller than the charging capacity when the authentication of the identifier is valid. According to this aspect, it is possible to suppress the influence on authorized electric vehicles.

[0114] In a ninth aspect, in the sixth aspect, when the authentication-invalidated charging is performed for the identifier for which the authentication was valid for the first time, a planned mileage is input in the charging device that performed the authentication-invalidated charging, and the charging control unit sets the threshold value based on the input planned mileage. According to this aspect, even if an electric vehicle is charging fraudulently, it is possible to take into consideration cases where the fraudulent state is not necessarily intentional, and to more reliably move the electric vehicle to a minimum extent.

[0115] In a tenth aspect, in the ninth aspect, the charging control unit sets the threshold for each of a plurality of circular or ring-shaped regions specified by a plurality of circles having a radius corresponding to the planned mileage and centered on the charging device that performed the first authentication invalid charging, and the threshold is set to increase in a radial direction from the center. According to this aspect, it is possible to more reliably exclude electric vehicles that have intentionally entered an unauthorized charging state and suppress the impact on legitimate electric vehicles.

[0116] According to an eleventh aspect of the program, there is provided a program for controlling, by a computer, an unauthorized charging management device that manages charging of an electric vehicle from a charging device, the program causing the computer to function as: authentication means for authenticating an identifier of the electric vehicle; counting means for counting, when authentication of the identifier is invalid, the number of times that authentication invalid charging, which is charging of the electric vehicle with the invalid identifier, has been performed in association with the identifier; and charging prohibition means for prohibiting subsequent charging from the charging device to the electric vehicle corresponding to the identifier when the number of times is equal to or greater than a predetermined threshold. According to this aspect, even in a charging station that allows charging of an electric vehicle corresponding to an invalid identifier, an electric vehicle that repeatedly performs unauthorized charging can be detected and prohibited from being charged, thereby enabling reliable and stable charging of legitimate electric vehicles.

[0117] In a twelfth aspect, in the eleventh aspect, the computer is configured to function as a charging control unit that causes the charging device to perform the authentication-invalidated charging when the number of times is less than the threshold value. According to this aspect, even if an electric vehicle is charging illegally, it is possible to take into consideration cases where the illegal state is not necessarily intentional, and to enable the electric vehicle to move to a minimum extent.

[0118] In a thirteenth aspect, in the twelfth aspect, the authentication-invalid charging is performed at a charging capacity that is less than the charging capacity that would be achieved if the authentication of the identifier were valid. According to this aspect, it is possible to suppress the impact on authorized electric vehicles.

[0119] In a fourteenth aspect, in the eleventh aspect, when the authentication-invalidated charging has been performed for the first time, a planned mileage is input to the charging device that performed the authentication-invalidated charging, and the charging control means sets the threshold value based on the input planned mileage. According to this aspect, even if an electric vehicle is charging illegally, it is possible to take into consideration cases where the illegal state is not necessarily intentional, and to more reliably move the electric vehicle to a minimum extent.

[0120] In a fifteenth aspect, in the fourteenth aspect, the charging control means is configured to set the threshold for each of a plurality of circular or ring-shaped regions specified by a plurality of circles having a radius corresponding to the planned mileage and centered on the charging device that performed the first authentication invalid charging, and the threshold is set to increase in a radial direction from the center. According to this aspect, it is possible to more reliably exclude electric vehicles that have intentionally entered an unauthorized charging state and suppress the impact on legitimate electric vehicles.

[0121] REFERENCE SIGNS LIST 10 Charging station 11 Electric vehicle (EV) 12 Charging and communication plug 13 Charging device 21 Charging control unit 22 Unauthorized charging detection unit 23 Communication unit 24 Memory unit 25 Display unit 26 Communication network 30 Authentication invalid charging information table 31 ID data 32 ID status data 33 Authentication invalid charging count data 34 Authentication invalid charging performed EV charging station ID data 40 Relationship table 41 Distance data 42 Authentication invalid charging count threshold data 50 Charging station 51 Charging device 52 Power meter 53 Charging station management server 54 LAN 61 Communication unit 62 Charging control instruction unit 63 Unauthorized charging detection unit 64 Memory unit 70 Charging system 71 Charging station 72 External network 73 Security monitoring server 81 Charging station management server 82 External communication device 91 Communication unit 92 Unauthorized charging detection unit 93 Storage unit 94 Communication network CS0 Charging station (charging station where first invalid authentication charging was performed) CS1 to CS13 Charging stations Th Threshold value

Claims

1. An unauthorized charging management method used in a device that manages charging from a charging device to an electric vehicle, the unauthorized charging management method comprising: an authentication step of authenticating the identifier of the electric vehicle; a counting step of, if the authentication of the identifier is invalid, counting the number of times that authentication invalid charging, which is charging with the invalid identifier, has been performed in the electric vehicle in association with the identifier; and a charging prohibition step of prohibiting further charging from the charging device to the electric vehicle corresponding to the identifier whose number of times has reached a predetermined threshold or more.

2. The unauthorized charging management method according to claim 1, further comprising a charging step of performing the authentication-invalidated charging when the number of times is less than the threshold value.

3. The unauthorized charging management method according to claim 2, wherein the authentication-invalid charging is performed at a charging capacity that is less than the charging capacity when authentication of the identifier is valid.

4. The unauthorized charging management method according to claim 1, comprising: an input step of inputting a planned mileage from the charging device that performed the authentication-invalidated charging when the number of times the authentication-invalidated charging has been performed is the first time; and a threshold setting step of setting the threshold based on the input planned mileage.

5. The unauthorized charging management method according to claim 4, wherein the threshold setting step sets the threshold for each circular or ring-shaped area specified by a plurality of circles whose radius is equivalent to the planned mileage and whose center is the charging device that performed the first authentication-invalidated charging, and the threshold is set so that it increases radially from the center.

6. An unauthorized charging management device that manages charging from a charging device to an electric vehicle, comprising: an unauthorized charging detection unit that, when the identifier of the electric vehicle is authenticated and the authentication of the identifier is invalid, counts the number of times that authentication invalid charging, which is charging with the invalid identifier, has been performed on the electric vehicle, in association with the identifier; and a charging control unit that prohibits further charging of the electric vehicle corresponding to the identifier when the number of times exceeds a predetermined threshold.

7. The unauthorized charging management device according to claim 6, wherein the charging control unit causes the charging device to perform the authentication-invalidated charging when the number of times is less than the threshold value.

8. The unauthorized charging management device according to claim 7, wherein the authentication-invalid charging is performed at a charging capacity that is less than the charging capacity when the authentication of the identifier is valid.

9. The unauthorized charging management device according to claim 6, further comprising: when the number of times the authentication-invalid charging has been performed for the identifier for which the authentication has been validated is the first time, the charging device that performed the authentication-invalid charging is caused to input a planned mileage; and the charging control unit sets the threshold value based on the input planned mileage.

10. The unauthorized charging management device of claim 9, wherein the charging control unit sets the threshold for each circular or ring-shaped area specified by multiple circles with a radius corresponding to the planned driving distance and centered on the charging device that performed the first authentication-invalidated charging, and the threshold is set to increase radially from the center.

11. A program for controlling an unauthorized charging management device that manages charging from a charging device to an electric vehicle using a computer, the program causing the computer to function as: an authentication means for authenticating the identifier of the electric vehicle; a counting means for counting the number of times that authentication invalid charging, which is charging with the invalid identifier, has been performed on the electric vehicle in association with the identifier when authentication of the identifier is invalid; and a charging prohibition means for prohibiting further charging from the charging device to the electric vehicle corresponding to the identifier when the number of times exceeds a predetermined threshold.

12. The program according to claim 11, which causes the computer to function as a charging control means that causes the charging device to perform the authentication-invalidated charging when the number of times is less than the threshold value.

13. The program according to claim 12, wherein the authentication-invalid charging is performed with a charging capacity that is less than the charging capacity when the authentication of the identifier is valid.

14. The program described in claim 12, further comprising: when the number of times the authentication-invalid charging has been performed is the first time, causing the charging device that performed the authentication-invalid charging to input a planned mileage; and causing the charging control means to set the threshold value based on the input planned mileage.

15. The program according to claim 14, wherein the charging control means sets the threshold for each circular or ring-shaped area specified by multiple circles whose radius, centered on the charging device that performed the first authentication-invalidated charging, corresponds to the planned driving distance, and the threshold is set to increase radially from the center.

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