EVSE MAC Address Mapping for Plug & Charge Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric vehicles face challenges in identifying and charging from public EVSE that do not support the 'Plug & Charge' standard, due to lack of association between MAC addresses and LocationIDs or EVSEIDs, and issues with EVSE maintenance and reliability.
Innovation Solution
Generating a relationship between a media access control (MAC) address and a location identification (LocationID) value, allowing for the activation of electric vehicle supply equipment (EVSE) by referencing this relationship using the MAC address.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If EVSE do not support the Plug & Charge standard, then vehicles cannot automatically charge without payment devices, but implementing Plug & Charge requires MAC address association with LocationID/EVSEID which many EVSE lack
Solution Approach 1:
The patent introduces a cloud server as an intermediary that receives MAC addresses from EVSE, associates them with LocationID and EVSEID, and enables Plug & Charge functionality. This mediator bridges the gap between EVSE that lack native MAC address association capabilities and vehicles requiring automatic charging, allowing the system to achieve Plug & Charge without modifying the EVSE hardware itself.
2Reliability
If EVSE degradation occurs while a vehicle is being charged, then the EVSE may no longer be able to supply charge, but the vehicle only knows the MAC address and not the LocationID or EVSEID to report the issue
Solution Approach 1:
The patent establishes a feedback mechanism where the cloud server receives MAC addresses from vehicles, looks up the associated LocationID and EVSEID, and uses this information to monitor charger reliability. When degradation occurs, the system can identify the specific EVSE through the cloud lookup and report issues to the appropriate authorities, creating a closed-loop feedback system for reliability monitoring.
Solution Approach 2:
The cloud server acts as an intermediary that preserves the connection between MAC address and LocationID/EVSEID even when the vehicle only has the MAC address. This mediator enables the system to maintain identification capability for reliability monitoring purposes despite the vehicle's limited knowledge of the EVSE identity.
3Measurement precision
If a vehicle receives MAC address during SLAC but MAC address is not associated with LocationID or EVSEID, then the vehicle cannot identify which EVSE it would like to receive charge from, but creating MAC address association requires infrastructure that many EVSE lack
Solution Approach 1:
The patent moves the MAC address association functionality from the EVSE device level to the cloud network level. Instead of requiring complex infrastructure at each EVSE location, the system uses the cloud dimension to perform the association, simplifying the local device complexity while achieving precise EVSE identification through network-based resolution.
Data Source
AI summary
Systems and methods for automating delivery of electric charge to a vehicle are described. In one example, a media access control address is mapped, related, or associated with an EVSEID at each location so that a cloud server may request activation of the electric vehicle supply equipment.