EV Charging Authorization via Certificate-Based Privacy Protection
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Solution Overview
Problem
Existing electric vehicle charging systems face challenges in authenticating EV users effectively, leading to revenue risks for eMobility service providers and vulnerabilities in the charging infrastructure due to security breaches, with current methods being complex, costly, and potentially violating privacy regulations.
Innovation Solution
An EV user authorization system and method that utilizes an EV certificate and private key, managed by a clearing house service certified by a vehicle-to-grid root certification authority, to authenticate EVs without requiring a contract certificate or personal data, simplifying the authentication process and supporting vehicle sharing services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication methods using contract certificates and personal data are used, then user identity can be verified, but user privacy is compromised and operational costs increase
Solution Approach 1:
The patent extracts and removes personal data and contract certificates from the authentication process. Instead of using traditional authentication methods that require personal information, the system uses only the EV certificate and private key for authentication, thereby verifying user identity without compromising privacy.
Solution Approach 2:
The patent introduces a clearing house service as an intermediary between the EV and the charging infrastructure. This intermediary manages the EV certificates and private keys, facilitating authentication without requiring direct access to personal data, thus maintaining both security and privacy.
2Reliability
If complex certificate provisioning systems and directory services are implemented, then authentication security is improved, but system complexity and operational costs increase
Solution Approach 1:
The patent removes complex certificate provisioning systems and directory services from the authentication architecture. By using a simplified model where the EV certificate and private key are directly managed by a clearing house, the system achieves adequate security without the overhead of complex infrastructure.
Solution Approach 2:
The EV performs self-authentication using its own certificate and private key stored locally. The clearing house service automatically manages the authentication process without requiring complex external systems, enabling the system to serve itself and reducing overall complexity.
3Reliability
If traditional authentication systems requiring contract certificates are used, then user identity can be confirmed, but flexibility for various business models is reduced
Solution Approach 1:
The patent creates a universal authentication mechanism using EV certificates and private keys that can serve multiple business models including car sharing, rental services, and personal vehicle charging. The clearing house service can manage different types of contracts and authorization levels, making the system adaptable to various business requirements without requiring model-specific authentication systems.
Data Source
AI summary
Disclosed is an electric vehicle (EV) user authorization method for charging an EV, the method performed by a device for mediating EV user authorization, in association with a mobility operator (MO) who makes a contract with an EV user and provides a charging service to a corresponding EV and a charge point operator (CPO) who supplies electric power to the EV which requests charging. The EV user authorization method may comprise the steps of: receiving association information between the EV and a charging service account from the mobility operator; storing the association information between the EV and the charging service account; receiving an association information identification request for an EV to be charged, from the charge point operator; and providing association information between the EV to be charged and the charging service account to the charge point operator.