Ball-Coupling Charging Module for Automated EV Attachment

The patent replaces the pneumatic pressure system with a mechanical ball member-based coupling mechanism. The ball members are pressed by elastic members (springs) to engage with corresponding holes in the charger, eliminating the need for pneumatic systems that are unsuitable for outdoor environments. This mechanical substitution maintains operational reliability while improving adaptability to outdoor charging stations.

The patent implements a self-service coupling mechanism where the attachment/detachment device automatically engages and disengages the charger using a driving part that rotates to move the pressing part. The elastic members automatically press the ball members to secure the charger, and the system can release the charger automatically when needed. This eliminates manual operation while maintaining ease of use through automated mechanical actions.

The patent divides the coupling mechanism into multiple ball members (typically three) distributed around the coupling interface. Each ball member is independently pressed by elastic members, allowing the system to achieve reliable engagement through distributed contact points. This segmentation enables compact design while maintaining coupling reliability, as the multiple small ball members occupy less space than a single large coupling mechanism.