EV Charging Session Verification Against Vehicle Switching Abuse
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Solution Overview
Problem
Public charging stations are often occupied by users who take advantage of free charging benefits by allowing other vehicles to continue charging without completing their sessions, leading to unfair access and potential misuse of charging privileges.
Innovation Solution
A system and method that differentiate between vehicles receiving a charge by identifying physical characteristics, communication protocols, and charge profiles, allowing the charging station to terminate the session if illicit behavior is detected, such as a non-entitled vehicle taking over a charging session.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If charging stations allow multiple vehicles to access charging sessions, then charging availability and user convenience are improved, but charging session integrity and fairness deteriorate due to illicit behavior
Solution Approach 1:
The system continuously monitors charging sessions by detecting vehicle presence through communication protocols and compares detected vehicles against authorized vehicle lists. This real-time feedback mechanism identifies when unauthorized vehicles attempt to access charging sessions, allowing the system to terminate illicit charging and maintain session integrity while still allowing legitimate users to charge.
Solution Approach 2:
The system introduces an intermediary verification layer between the charging station and vehicles. This intermediary checks vehicle identification, authorization status, and presence continuity before allowing charging access. The intermediary acts as a gatekeeper that enables convenient access for authorized vehicles while blocking unauthorized access, thus maintaining both ease of operation and charging session integrity.
2Reliability
If charging stations implement strict vehicle identification to prevent misuse, then charging session integrity is improved, but charging speed and user convenience worsen due to additional verification steps
Solution Approach 1:
The system performs vehicle identification, authorization verification, and authentication checks before the charging session begins. By completing all verification steps in advance, the system ensures charging session integrity is established upfront, allowing the actual charging process to proceed without interruption or additional verification delays.
Solution Approach 2:
The system maintains continuous monitoring of vehicle presence and authorization status throughout the charging session using ongoing detection of communication protocols. This continuous verification ensures session integrity without requiring intermittent pause-and-check operations, allowing charging to proceed continuously at full speed once authorized.
3Reliability
If charging stations monitor vehicle presence continuously to detect illicit behavior, then charging session integrity is improved, but system complexity and energy consumption worsen
Solution Approach 1:
The system leverages the vehicle's own communication protocols and electrical signals as the monitoring mechanism. By detecting standard communication handshakes and power draw patterns that vehicles naturally generate during connection and charging, the system identifies unauthorized vehicles without requiring additional sensors or active probing equipment, thus maintaining session integrity while minimizing added complexity.
Solution Approach 2:
The system uses the existing charging connection infrastructure for multiple purposes: power transfer, vehicle identification, authorization verification, and continuous presence monitoring. By making the monitoring function universal and integrated into the standard charging interaction, the system avoids adding separate dedicated monitoring hardware, reducing overall system complexity while maintaining reliable detection capabilities.
Data Source
AI summary
Systems and methods for policing charging behavior are provided. In one embodiment, a method includes an identification process such that a first iteration of the identification process includes identifying a first vehicle as a currently charging vehicle receiving a charge from a charging station during a current charging session. In a second iteration of the identification process includes identifying a second vehicle as the currently charging vehicle during the current charging session. The method further includes determining a difference between the first vehicle and the second vehicle. The method yet further includes modifying the current charging session based on the determined difference.