US Patent 11184999 Charging column

A charging column includes an equipment box having a control equipment and a delivery pipelines, an isolated docking box disposed outside the equipment box, a power device and a cooling pipeline. An interior of the isolated docking box is isolated from an interior of the equipment box. A first pair of joints are connected to the delivery pipelines and electrodes are electrically connected to the control equipment inside the isolated docking box. The power device is connected to the isolated docking box and the electrodes therein. The cooling pipeline connected to the isolated docking box includes a second pair of joints for engaging with the first pair of joints. Any coolant leakage and falling off objects can be retained inside the isolated docking box, thereby protecting the control equipment from damages.