EV Charging System and Method for Separating the High Precision Mechanics and High Load Mechanics

A method for charging a chargeable device using an electric charging system, the chargeable device comprising:

• at least one energy storage device;
• the electric charging system comprising:
• an automatic connection device disposed outside a chargeable device, the automatic connection device being configured to be electrically coupled to an electrical energy source and comprising:
• a plug head configured to electrically and mechanically connect to the chargeable device, the plug head comprising:
• a plug head connector comprising a first plurality of electrically conductive pins and/or sockets configured to receive pins;
• and
• a plug head lock comprising a first shape;
• and
• a first mechanism configured to position the plug head at an inlet;
• the inlet comprising:
• a second plurality of electrically conductive sockets and/or pins configured to be complementary to the first plurality of electrically conductive pins and/or sockets of the plug head connector;
• a plug head coupler comprising a second shape that is complementary to the first shape of the plug head lock and configured to mechanically couple with the plug head by securely grasping the plug head lock;
• and
• a second mechanism configured to mechanically and electrically couple the first plurality of electrically conductive pins and/or sockets and the second plurality of electrically conductive sockets and/or pins, the inlet configured to be:
• disposed in an outer surface of the chargeable device;
• and
• electrically connected to the at least one energy storage device in the chargeable device;
• the method comprising:
• moving, using the first mechanism, the plug head to the inlet;
• locking, using the inlet, the plug head in correct orientation at the inlet;
• inserting, using a second mechanism, a plug connector in the inlet;
• and
• charging, using the electric charging system the chargeable device,
• wherein the first mechanism is configured to produce a first maximum force and to move with a first translational and rotational precision and the second mechanism is configured to produce a second maximum force and to move with a second translational and rotational precision,
• wherein the second maximum force is greater than the first maximum force, and
• wherein the first translational and rotational precision is higher than the second translational and rotational precision.