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KR-20260064601-A - SERVER AND SYSTEM

KR20260064601AKR 20260064601 AKR20260064601 AKR 20260064601AKR-20260064601-A

Abstract

The server is equipped with a communication unit that communicates with the vehicle's DCM and a processor. If the cancellation of the DCM is not requested, the processor transmits a first digital certificate to the DCM through the communication unit. If the cancellation of the DCM is requested, the processor transmits a second digital certificate to the DCM through the communication unit, which has a longer validity period than the first digital certificate.

Inventors

  • 미사와 다카히로

Assignees

  • 도요타 지도샤（주）

Dates

Publication Date
20260507
Application Date
20251029
Priority Date
20241030

Claims (10)

  1. As a server that transmits a digital certificate used for communication between the vehicle and the power stand to the said vehicle, A communication unit that communicates with the vehicle communication unit of the above vehicle, and It is equipped with a control unit, The above digital certificate includes a first digital certificate and a second digital certificate having a longer validity period than the first digital certificate, and The above control unit is, If the cancellation of the above vehicle communication device has not been requested, the first digital certificate is transmitted to the above vehicle communication device through the above communication unit, and A server that transmits the second digital certificate to the vehicle communication device through the communication unit when a request for cancellation of the vehicle communication device is made.
  2. In Article 1, The control unit is a server that transmits the first digital certificate to the vehicle communication unit through the communication unit when an operation to apply for a contract of the vehicle communication unit is performed by the user of the vehicle.
  3. In Article 1 or Article 2, The above control unit is, Execute a process to verify the contract information of the above vehicle communication device, and A server that determines whether a request for cancellation of the vehicle communication device has been made based on the above contract information.
  4. In Paragraph 3, The control unit is a server that executes the processing of verifying the contract information in accordance with the IG power of the vehicle being turned on.
  5. In Article 1 or Article 2, A server that transmits the second digital certificate to the vehicle communication unit through the communication unit when the control unit receives a cancellation signal indicating that an operation to request cancellation of the vehicle communication unit has been performed by the user of the vehicle.
  6. In Article 1 or Article 2, The control unit is a server that, if the cancellation of the vehicle communication device is requested a predetermined period prior to the expiration date of the first digital certificate, transmits the second digital certificate to the vehicle communication device through the communication unit before the vehicle communication device is canceled.
  7. In Article 6, The above vehicle communicator is capable of receiving the digital certificate from the communication unit when the contract of the above vehicle communicator is valid, and is unable to receive the digital certificate from the communication unit when the contract of the above vehicle communicator is invalid, and A server in which, if the above control unit requests cancellation of the vehicle communication unit before the above predetermined period prior to the above validity period, the communication unit receives a signal from the vehicle communication unit indicating that the second digital certificate has been recorded in the vehicle's ECU.
  8. The server described in Article 1 or Article 2, and A system comprising a vehicle including a vehicle communication device that communicates with the above communication unit.
  9. In Article 8, The above vehicle is equipped with an ECU capable of recording the above first digital certificate and the above second digital certificate, and A system in which the second digital certificate is initially recorded in the above ECU.
  10. In Article 9, The above vehicle communicator is capable of communicating with an authentication station that issues each of the above first digital certificate and the above second digital certificate, and The above server is, It includes a memory unit that stores the second digital certificate transmitted from the certification station to the vehicle communicator and also initially recorded in the ECU, A system that transmits the second digital certificate stored in the memory unit to the vehicle communication unit through the communication unit when a request for cancellation of the vehicle communication unit is made.

Description

Server and System The present disclosure relates to servers and systems. Japanese Patent Publication No. 2022-527902 discloses a system in which a digital certificate transmitted from an EV charging station is authenticated in a vehicle. In this system, communication is established between the vehicle and the EV charging station based on the digital certificate, and then, charging of the vehicle is performed. Although not specified in the aforementioned Japanese Patent Publication No. 2022-527902, in order for a vehicle to receive a digital certificate, it is necessary to keep the contract of the vehicle communication device valid, and if the contract of the vehicle communication device is not valid, the vehicle cannot receive the digital certificate. When the vehicle is not receiving the digital certificate, a communication connection between the vehicle and the EV charging station cannot be established. The present disclosure is made to solve the above problem, and its purpose is to provide a server and system capable of more reliably establishing a communication connection between a vehicle and a power stand even when the contract of the vehicle communication device is invalid. A server related to the first aspect of the present disclosure is a server that transmits a digital certificate used for communication between a vehicle and a power stand to a vehicle, and comprises a communication unit that communicates with a vehicle communication unit of the vehicle and a control unit. The digital certificate includes a first digital certificate and a second digital certificate with a longer validity period than the first digital certificate. The control unit transmits the first digital certificate to the vehicle communication unit through the communication unit when the cancellation of the vehicle communication unit has not been requested, and transmits the second digital certificate to the vehicle communication unit through the communication unit when the cancellation of the vehicle communication unit has been requested. A system related to the second phase of the present disclosure comprises a vehicle including a server related to the first phase and a vehicle communication device that communicates with a communication unit. The above and other objects, features, aspects, and advantages of this invention will become apparent from the following detailed description of this invention as understood in conjunction with the accompanying drawings. FIG. 1 is a drawing showing the configuration of a system according to the present embodiment. FIG. 2 is the first figure showing the sequence of a system according to the present embodiment. FIG. 3 is a second figure showing the sequence of a system according to the present embodiment. FIG. 4 is a sequence diagram of a system according to a first variation of the present embodiment. FIG. 5 is a sequence diagram of a system according to a second variation of the present embodiment. Embodiments of the present disclosure will be described with reference to the drawings. In addition, in the drawings referenced below, identical or equivalent components are given the same number. FIG. 1 is a diagram showing the configuration of a system (1) related to the present embodiment. The system (1) is equipped with a server (100) and a vehicle (200). The server (100) is equipped with a processor (110), memory (120), and a communication unit (130). Additionally, the processor (110) is an example of a “control unit” of the present disclosure. In the memory (120), information used in the program (e.g., maps, formulas, and various parameters) is stored in addition to the program executed on the processor (110). The communication unit (130) is controlled by the processor (110). The communication unit (130) can communicate with each of the Data Communication Module (DCM) (230) described later and the authentication station (400) described later. The vehicle (200) is equipped with an ECU (Electronic Control Unit) (210), a battery pack (220), a DCM (230), a car navigation device (240), and an inlet (250). Additionally, the DCM (230) is an example of the “vehicle communication device” of the present disclosure. The ECU (210) is equipped with a processor (211), a memory (212), and a communication unit (213). In the memory (212), information used in the program (e.g., maps, formulas, and various parameters) is stored in addition to the program executed by the processor (211). The communication unit (213) is controlled by the processor (211). The communication unit (213) can communicate with the DCM (230) and the car navigation device (240), etc., via CAN (Controller Area Network) communication, etc. The battery pack (220) is a battery for driving a vehicle (200). The vehicle (200) may be a PHEV (Plug-in Hybrid Electric Vehicle), a BEV (Battery Electric Vehicle), and an FCEV (Fuel Cell Electric Vehicle), etc. The vehicle (200) is electrically connected to the EVSE (300) via a cable (301), thereby