Ejector Mechanism for Automatic EV Charging Connector Removal
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Solution Overview
Problem
Electric vehicle charging connectors require manual removal, which can be inconvenient and unsafe, especially in adverse weather conditions or remote locations, as drivers must remain parked and unable to exit the vehicle until the charging is completed and the connector is unplugged.
Innovation Solution
An ejector mechanism is integrated into the charging connector that automatically forces the connector out of the charging port, controlled via wired or wireless signals, using a sliding member, ratcheting assembly, and actuator assembly, allowing for automatic ejection upon charging completion or user command.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual removal of charging connector is required, then device complexity is reduced, but ease of operation deteriorates and safety risks increase in adverse conditions
Solution Approach 1:
The charging connector system performs the ejection operation automatically without requiring manual intervention from the user. The ejector mechanism is activated by the control system when charging is complete or when a unsafe condition is detected, allowing the system to service itself by removing the connector automatically.
Solution Approach 2:
The patent replaces the purely manual mechanical removal process with an automated electromechanical system. The ejector mechanism uses an actuator (such as a motor or solenoid) controlled by circuitry to automatically push the charging connector out of the charging port, substituting manual mechanical action with automated control.
2Reliability
If automatic ejection mechanism is added, then ease of operation and safety are improved, but device complexity increases
Solution Approach 1:
The control system monitors the charging state and environmental conditions, and automatically activates the ejector mechanism when appropriate. The system receives feedback about charging completion or unsafe conditions (such as severe weather detection) and responds by initiating the ejection sequence to remove the connector.
Solution Approach 2:
The control system serves multiple functions: it manages the charging process, monitors safety conditions, and controls the ejector mechanism. By integrating these functions into a single control unit, the patent reduces overall system complexity while maintaining multiple capabilities.
3Loss of time
If driver must remain in vehicle during charging, then safety from external hazards is improved, but loss of time and productivity increase due to inability to leave
Solution Approach 1:
The system performs the connector ejection action automatically at the appropriate time (when charging is complete or when unsafe conditions are detected), eliminating the need for the driver to exit the vehicle. This preliminary automated action resolves the conflict between staying safe in the vehicle and avoiding time loss.
Data Source
AI summary
An ejector can be used to automatically eject charging connectors of electric vehicle chargers. The ejector can be configured to be secured to any of a variety of charging connectors for electric vehicles. The ejector can include an ejector mechanism that is configured to force the charging connector out from the charging port. The ejector can also include circuitry by which the ejector mechanism can be controlled via a wired and/or wireless interface.