EV Charging Authorization via Personal Mobile Credentials
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Solution Overview
Problem
Existing charging contracts for electric vehicles are vehicle-specific, limiting their use to a single vehicle and not easily transferable to other vehicles, such as rental vehicles.
Innovation Solution
Authorization data for charging operations are linked with a person rather than the vehicle, allowing for temporary or long-term association, and are exchanged via direct or indirect interactions using a communication link, enabling convenient charging without vehicle-specific storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If authorization data are stored in the motor vehicle, then charging operation can be enabled conveniently, but the charging contract becomes coupled to the motor vehicle and cannot be used for other vehicles
Solution Approach 1:
A mobile communication device serves as an intermediary between the charging station and the person associated with the charging contract. The authorization data are stored in the mobile device rather than in the motor vehicle, allowing the same authorization data to be used across multiple vehicles while maintaining secure communication through the mobile device as a mediator.
Solution Approach 2:
The patent shifts the storage dimension of authorization data from the vehicle-specific domain to the personal domain via mobile devices. By changing where the data resides (from vehicle memory to mobile device memory), the system enables cross-vehicle usage while maintaining secure authentication through the communication link.
2Adaptability or versatility
If authorization data are linked with a person via interaction, then charging contract can be used across different vehicles, but the charging operation requires additional interaction steps
Solution Approach 1:
The person associates their mobile communication device with the charging contract in advance, storing authorization data in the mobile device before actual charging operations. This preliminary action ensures that when the person needs to charge any vehicle, the authorization data are already prepared and available in the mobile device, eliminating the need for repeated setup steps.
Solution Approach 2:
The system enables the person to autonomously use their charging contract across different vehicles by having the mobile device automatically provide authorization data. The person services their own charging needs across multiple vehicles without requiring manual contract transfers or administrative intervention for each vehicle.
3Extent of automation
If authorization data are stored in the motor vehicle, then charging operation can be performed autonomously, but the system lacks flexibility for rental or shared vehicles
Solution Approach 1:
The mobile communication device serves as a universal storage medium for authorization data that can be used across multiple different vehicles. Instead of having vehicle-specific authorization stored in each vehicle, the same mobile device can authenticate the user with any vehicle in the system, providing multi-functionality and universal access.
Data Source
AI summary
A method and system for charging an electric motor vehicle at a charging station. A communication link is established between the motor vehicle and the charging station, via which a charging operation is enabled by linking with authorization data, characterized in that the authorization data are not stored in the motor vehicle, and the authorization data are linked with the motor vehicle by an interaction with a person.