Electric Vehicle Security Device for Unauthorized Charging Disconnection
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Solution Overview
Problem
Electric vehicles are vulnerable to theft when unexpectedly disconnected from charging stations by unauthorized users, as existing security measures are inadequate to prevent unauthorized disconnections during the time-consuming charging process.
Innovation Solution
A security device with a processor and control module that generates and transmits a command signal to lock the vehicle's battery when an unexpected disconnection from the charging station occurs, preventing operation and ensuring the vehicle remains inoperable until authorized access is re-established.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electric vehicle is left unattended at the charging station, then the user can perform other tasks during charging, but the vehicle becomes vulnerable to unauthorized disconnection and theft
Solution Approach 1:
The security device is pre-configured with authorization credentials (RFID tag, biometric data, or PIN code) before charging begins. When disconnection is detected, the system automatically checks authorization status and activates the locking mechanism on the battery terminal, preventing unauthorized removal of the vehicle from the charging station
Solution Approach 2:
The security device acts as an intermediary between the charging station and the electric vehicle. It monitors the charging connection status and mediates the locking/unlocking of the battery terminal based on authorization verification, providing a security layer that allows legitimate users to leave their vehicles while blocking unauthorized access
2Reliability
If a security device is added to monitor disconnection and lock the battery, then vehicle theft is prevented, but device complexity increases
Solution Approach 1:
The security device integrates multiple functions into a single unit: it monitors charging connection status, verifies user authorization, controls the locking mechanism, and communicates with both the charging station and vehicle systems. This multi-functionality reduces the need for separate security components while maintaining comprehensive protection
Solution Approach 2:
The security device operates autonomously by automatically detecting disconnection events, verifying authorization credentials, and activating the battery terminal lock without requiring user intervention. The system self-manages the security protocol, reducing operational complexity while maintaining robust security
Data Source
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AI summary
A security device (112) for use with an electric vehicle (102) is provided. The security device includes a processor (214) that is programmed to receive at least one signal representative of a disconnection between a charging station (104) and a battery within the electric vehicle. The processor is further programmed to generate a command signal based on the signal. Moreover, the security device includes a control module (120) that is coupled to the processor, wherein the security device is configured to receive the command signal. The control module is also configured to transmit a control signal to lock the battery to render the electric vehicle inoperable when the disconnection between the charging station and the battery is performed by an unauthorized user.