EV Charging Authorization Using Parking Space and Plate Matching
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Solution Overview
Problem
In automatic authentication charging systems for electric vehicles, there is a risk of unjust charging where the owner of an electric vehicle parked in one space is charged for another vehicle's charging in a nearby space.
Innovation Solution
A charging control device that identifies vehicles through camera images, associates them with registered user information, and only authorizes charging if the vehicle is correctly matched with its owner's information, with a mechanism to deauthorize charging after a predetermined time if the vehicle is not correctly connected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic authentication charging is implemented to enable easy charging without authorization cards, then ease of operation is improved, but reliability deteriorates due to risk of unjust charging
Solution Approach 1:
The system performs preliminary vehicle identification and authorization verification before enabling charging. The charging control device captures images of the vehicle, identifies it using recognition technology, and verifies authorization status in advance before allowing the charging process to commence, thus preventing unjust charging while maintaining automatic authentication convenience
Solution Approach 2:
The system implements continuous feedback monitoring during the charging process by tracking the connection status between the charging plug and the vehicle. The charging control device monitors whether the charging plug remains properly connected and verifies vehicle presence throughout charging, automatically interrupting or preventing charging when unauthorized conditions are detected, thereby ensuring reliability while maintaining ease of operation
2Ease of operation
If charging authorization is maintained after vehicle departure to allow subsequent charging, then ease of operation is improved, but harmful factors increase due to unauthorized charging of other vehicles
Solution Approach 1:
The charging control device continuously monitors vehicle presence through image capture and recognition during the charging process. When the vehicle departs or is replaced, the system detects this change in real-time and automatically revokes charging authorization, preventing other vehicles from being charged under the original owner's account and eliminating unauthorized charging fees
Solution Approach 2:
The charging authorization is made dynamic rather than static. The system adjusts authorization status based on real-time vehicle identification and connection status. When the vehicle is present and properly connected, authorization is granted; when the vehicle departs or is replaced, authorization is automatically revoked, thus preventing harmful unauthorized charging while maintaining operational convenience
Data Source
AI summary
The vehicle identification unit identifies that a vehicle (electric vehicle) has parked in the parking space indicated by the parking space ID based on the captured image and parking space ID obtained from the camera. The charging control unit sets the charging device corresponding to the parking space to the authenticated state when the combination of the parking space ID of the parking space and the license plate number of the electric vehicle is included in the reservation information. The charging control unit causes the charging device to perform charging processing when the charging plug of the charging device in the authenticated state is connected to the electric vehicle. If the charging process unit does not receive a plug connection signal from the charging device within a predetermined time after the vehicle identification unit identifies that the electric vehicle has parked in the parking space, the charging device is de-authenticated.