Certificate-Based Charging Authorization for Dynamic e-Roaming
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Solution Overview
Problem
The challenge in electromobility is the lack of predefined contractual relationships between electromobility providers and charging point operators, necessitating complex, ad hoc negotiations for service authorization, which existing methods fail to address efficiently.
Innovation Solution
A certificate-based authorization method involving authentication, extraction of digital certificate attributes, generation of a resource identifier, and initiation of a certificate validation protocol to facilitate dynamic and flexible negotiation of indirect contractual relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ad hoc negotiations are conducted for service authorization between electromobility providers and charging point operators, then service authorization can be achieved, but the process complexity and time consumption increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-establishing contractual relationships and authorization rules between electromobility providers and charging point operators before actual service usage. The system stores authorization rules, pricing models, and service terms in advance, allowing automated validation and negotiation during charging sessions without requiring real-time ad hoc negotiations, thus reducing process complexity while maintaining reliable service authorization
Solution Approach 2:
The patent introduces an intermediary authorization management system that mediates between electromobility providers and charging point operators. This intermediary system handles the complex negotiation and authorization processes centrally, using pre-configured rules and digital certificates to validate service requests, thereby simplifying the interaction between parties and reducing overall system complexity while ensuring reliable authorization
2Reliability
If ad hoc negotiations are conducted for service authorization, then service terms can be agreed upon, but the time required for authorization increases
Solution Approach 1:
The system performs preliminary actions by pre-configuring authorization rules, service terms, and pricing models in a database before actual charging sessions. When a service request occurs, the system automatically retrieves and applies these pre-negotiated terms, eliminating the need for time-consuming real-time negotiations while ensuring reliable service authorization through pre-established contractual frameworks
Solution Approach 2:
The patent implements self-service by enabling automated authorization validation between charging point operators and electromobility providers using digital certificates and pre-stored authorization rules. The system autonomously validates service requests, checks authorization status, and negotiates service terms without human intervention, dramatically reducing authorization time while maintaining reliable service validation through automated rule-based decision-making
Data Source
AI summary
The invention relates to a negotiation of an indirect contractual relationship which is also known in the field of electromobility as "e-roaming". E-roaming allows a service user who maintains a contractual relationship with an electromobility provider as a service provider to charge his electric vehicle at public charging points which are not necessarily operated by the electromobility provider itself. The method according to the invention allows for an automated authorization request to an electromobility provider, or EMP, on the part of a charging point, in which the conditions of the operator, or CPO, of said charging point are transmitted in the authorization request. The embodiment according to the invention of a formation of a resource identifier for coding terms and conditions of the delivery station ensures a due economy of data in the transmission of details regarding the service user or the delivery station; at the same time, all participants are afforded comprehensive freedom of design in the negotiation of indirect contractual relationships. According to the invention, a simple standard protocol is used as the interface for the negotiation of indirect contractual relationships, while complex business decisions and the negotiations associated therewith are implemented with the participating parties.