Manual Unlocking Structure for EV Charging Lock
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Solution Overview
Problem
The existing locking devices for electric vehicle charging systems can become inoperable due to abnormalities in the motor or controller, preventing the power feeding plug from being disconnected, leading to unauthorized access and theft risks.
Innovation Solution
A manual unlocking structure is integrated into the locking device, allowing users to manually override the lock mechanism using a wire and operation box, ensuring the power feeding plug can be disconnected even if the motor or controller is malfunctioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a motor-driven lock bar is used to fasten the hook and prevent unauthorized disconnection, then security against theft is improved, but reliability deteriorates when motor or controller abnormalities occur
Solution Approach 1:
A wire is introduced as an intermediary component that mechanically connects the operation box to the lock bar. This wire serves as a backup transmission medium that can directly move the lock bar when the motor-driven mechanism fails, ensuring reliability while maintaining security through the primary motor-driven system
Solution Approach 2:
The manual wire-operated unlocking mechanism is prepared in advance as a backup system. When motor or controller abnormalities occur, this pre-prepared alternative mechanism can immediately take over to move the lock bar, preventing the system from being completely locked and ensuring reliable unlocking capability
2Object-affected harmful factors
If a motor-driven locking system is implemented to prevent unauthorized disconnection, then security is improved, but ease of operation deteriorates when abnormalities occur
Solution Approach 1:
The wire acts as a simple mechanical intermediary that transmits user input from the operation box directly to the lock bar. This provides an intuitive and easy-to-operate manual override system that does not require complex electronic interfaces or specialized knowledge, maintaining ease of operation even when the electronic control system fails
Solution Approach 2:
The operation box with wire mechanism enables the user to independently override the locking system without requiring external assistance or complex procedures. The user can directly manipulate the wire through the operation box to move the lock bar, providing self-service capability for emergency unlocking
3Extent of automation
If only a motor-driven lock bar is used for securing the power feeding plug, then automation is improved, but adaptability deteriorates when system abnormalities occur
Solution Approach 1:
The lock bar is designed to be movable by multiple different mechanisms: the primary motor-driven system for normal automatic operation, and the secondary wire-operated system for manual override. This multi-functionality ensures the system can adapt to different situations including normal operation, emergency situations, and maintenance scenarios
Solution Approach 2:
The wire-operated manual mechanism is prepared in advance as a backup unlocking method. This ensures that when the automated motor-driven system encounters abnormalities, the system can adapt by switching to the pre-prepared manual method, maintaining operational flexibility and preventing complete system failure
Data Source
AI summary
A manual unlocking structure arranged in a locking device for locking a power feeding plug to a power receiving connector arranged in a vehicle. The power feeding plug includes a hook. The locking device includes a fastening member capable of fastening the hook to the power receiving connector to lock the power feeding plug to the power receiving connector. The manual unlocking structure includes an operation member that is manually operable to move and separate the fastening member from the hook. A user operates the operation member to manually unlock the power feeding plug. An operation box is arranged in the vehicle and used to manually operate the operation member in the vehicle.