Sensor-Guided EV Charger Cable Retraction for Safer Handling
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Solution Overview
Problem
The challenge of cable management in electric vehicle charging stations, particularly with high-voltage chargers, includes the difficulty in using large cables due to increased voltage and power requirements, which can be problematic for users with disabilities and poses hazards such as tripping and electrical safety risks, as well as exposure to environmental elements.
Innovation Solution
A cable management system with a mechanical wire coupled to the charging cable, featuring a wire tension sensor and a controller that controls a wire retractor based on applied force, retracting and extending the cable to manage slack and prevent damage, while ensuring accessibility and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-voltage charging capability is implemented, then charging power is improved, but cable size and weight increase making it difficult to use
Solution Approach 1:
The cable management system dynamically adjusts cable deployment based on detected pull force. When a user pulls the cable, sensors detect the force and the system automatically deploys additional cable length, allowing the same cable to adapt to different usage scenarios without requiring the user to manually manage cable length or weight
Solution Approach 2:
The system uses automated sensors and actuators to manage cable deployment and retrieval without user intervention. The cable is automatically deployed when pulled and retracted when not in use, eliminating the need for users to manually handle heavy high-voltage cables
2Ease of operation
If cable is left extended on ground, then accessibility is improved, but safety hazards increase
Solution Approach 1:
The system continuously monitors cable deployment status through sensors and automatically retrieves the cable when it detects that the cable has been fully deployed or when charging is complete, providing feedback control that prevents cables from remaining extended and creating safety hazards
Solution Approach 2:
The cable management system proactively retrieves and stores cables in designated compartments before potential hazards can occur, such as before users might trip over them or before environmental damage can occur, rather than waiting for problems to arise
3Object-affected harmful factors
If cable is retracted into enclosure, then safety is improved, but accessibility deteriorates
Solution Approach 1:
The cable management system dynamically transitions between retracted and deployed states based on real-time sensor input. When users need the cable, it automatically deploys; when not needed, it retracts. This dynamic behavior ensures both safety (when retracted) and accessibility (when deployed) without manual intervention
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system facilitates easy use of charging cables, prevents damage, and maintains accessibility for users with disabilities by keeping cables off the ground, reducing tripping hazards, and protecting against environmental factors.
Implementation Method 1
A wire tension sensor, such as a load cell, may be engaged by the mechanical wire and generate a sensor output based on an amount of force applied to the mechanical wire
Data Source
AI summary
There may be provided a cable management system for an electric vehicle charger. The cable management system may include a mechanical wire coupled to a charging cable associated with the electric vehicle charger and an enclosure. The cable management system may include a wire tension sensor engaging the mechanical wire. The wire tension sensor may generate a sensor output based on a force applied to the mechanical wire. The wire retractor may be configured to retract the mechanical wire into the enclosure and extend the mechanical wire from the enclosure. The cable management system may include a controller coupled to the wire tension sensor. The controller may be configured with instructions which, when executed, cause the controller to control the wire retractor based on an amount of force applied to the mechanical wire.