EV Charging Port Door Control for Robotic Coupling Reliability
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Solution Overview
Problem
There is a need for a standardized procedure to position a charging manipulator with respect to an electric vehicle and control the opening and closing of the charging port, considering various types of charging ports, supply equipment, and charging schemes, to facilitate efficient power transfer.
Innovation Solution
A method and apparatus for controlling the charging door of an electric vehicle, involving positioning the charging manipulator, performing protocols for opening and closing the charging door, and checking its status, while receiving information on the door's shape, opening type, and direction, and determining the moving path based on the door's position and distance from adjacent vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standardized control procedure is implemented for charging door operations, then the reliability and efficiency of power transfer is improved, but the device complexity and protocol specification requirements increase
Solution Approach 1:
The charging door control procedure is segmented into distinct sequential steps: positioning the charging manipulator, checking door status, opening the door, coupling to the inlet, and uncoupling after charging. Each step is independently defined with specific actions and status checks, making the complex overall process manageable and reliable through structured decomposition.
2Adaptability or versatility
If the charging manipulator is precisely positioned and door operations are carefully controlled, then the adaptability to various charging port types is improved, but the operation time and process duration increase
Solution Approach 1:
The system performs preliminary actions by first positioning the charging manipulator near the charging door and checking the door's opening type and direction before executing the actual opening and coupling operations. This preliminary positioning and information gathering enables the manipulator to adapt to different port types without requiring extensive repositioning or adjustments during the charging process, thereby reducing overall time loss.
3Measurement precision
If multiple status checks and protocol verifications are performed, then the measurement precision of door status is improved, but the operation complexity and control difficulty increase
Solution Approach 1:
The control procedure incorporates feedback mechanisms at each stage: checking whether the charging door is opened before coupling, verifying the coupling status, and checking whether the door is closed after uncoupling. Each check provides feedback that confirms proper execution of the previous step and triggers the next appropriate action, ensuring high measurement precision while maintaining manageable control complexity through clear cause-effect relationships.
Data Source
AI summary
A control method for opening/closing of electric vehicle charging door is executed by electric vehicle supply equipment (EVSE) including a charging manipulator. The method includes steps of: positioning the charging manipulator at a location corresponding to the charging door of an electric vehicle; performing a protocol to open the charging door; checking whether the charging door is opened; and coupling the charging manipulator to the inlet of the charging door.