Mobile EV Charging With Peer-to-Peer Power Transfer
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Solution Overview
Problem
Existing electric vehicle charging systems lack a method for efficiently supplying power when vehicles cannot easily find or reach a charging station.
Innovation Solution
A method and system for power transmission between mobile power supply devices and electric vehicles, including communication protocols and devices for identification, authentication, and charging processes, enabling peer-to-peer power transfer and various use cases such as emergency charging and trading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed charging station infrastructure is used, then power supply reliability is improved, but system adaptability deteriorates when vehicles cannot reach charging stations
Solution Approach 1:
Instead of having vehicles travel to fixed charging stations, the patent inverts the approach by making the power supply device mobile and bringing it to the vehicle's location. The mobile power supply device can be transported to where the vehicle is stranded, reversing the traditional charging paradigm and enabling power supply when fixed infrastructure is inaccessible.
Solution Approach 2:
The patent employs a mobile power supply device that can dynamically relocate to different positions based on vehicle needs. Unlike fixed charging stations, this dynamic system can be moved to various locations, adapting to different charging scenarios and improving accessibility for vehicles that cannot reach conventional charging points.
2Adaptability or versatility
If mobile power supply devices are deployed, then charging accessibility is improved, but communication and control complexity increases
Solution Approach 1:
The patent introduces a communication and control device as an intermediary between the mobile power supply device and the vehicle. This intermediary manages the communication protocols, authentication, and control signals, simplifying the overall system architecture while enabling complex functions like peer-to-peer charging and emergency charging modes.
3Adaptability or versatility
If peer-to-peer power transfer is implemented, then system versatility is improved, but authentication and authorization complexity increases
Solution Approach 1:
The patent implements self-service authentication and authorization mechanisms where the communication and control device autonomously manages identification, authentication, and authorization processes between the mobile power supply device and the vehicle. This self-service approach handles multiple charging modes (peer-to-peer, emergency charging, etc.) without requiring manual intervention, reducing operational complexity despite the sophisticated authentication requirements.
Data Source
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AI summary
A charging method according to the present invention comprises the steps of: establishing a communication link with a mobile power supply device; performing at least one of mutual identification, authentication, or authorization between the mobile power supply device and an electric mobility means; starting a charging process for receiving power from the mobile power supply device; and terminating the charging process.