Battery assembly, system for replacing battery and method thereof

A system for replacing battery of a drone, the drone having a space and a plurality of hooks, the space being configured to accommodate a battery, the hooks at least partially covering an opening, so as to buckle and fix the battery in the space, the system for replacing battery comprising:

• a device for replacing battery, comprising:
• a base having a guiding hole configured to allow the drone to at least partially pass through;
• a first tray having a first bump facing to the guiding hole;
• and
• a moving mechanism configured to move the first tray towards or away from the guiding hole,
• wherein when the first tray moves towards the guiding hole, the first bump moves to the opening so as to push the hooks away from each other, in order to allow the battery to follow the first tray to pass through the opening and leave from the space.

A battery assembly, configured to be installed on a drone, the battery assembly comprising:

• a battery;
• a chassis having a space within and configured to accommodate the battery;
• and
• a plurality of swing arms pivotally connected with the chassis respectively, and at least partially located in the space, each of the swing arms having a hook and a bump, the hooks at least partially facing to each other, the bumps at least partially facing to each other,
• wherein when the battery is located in the space, the bumps are compressed by the battery to make the swing arms respectively rotate relative to the chassis, such that the hooks move close to each other and the battery is buckled and fixed in the space, and at least one electrical connector located within the chassis between the hooks contacts a conductor located on a side of the battery.

A method of replacing battery, comprises:

• controlling a drone to fly to a base, the drone having a first battery buckled within, the drone being controlled to at least partially pass through a guiding hole along a first direction and to be buckled at the base;
• moving a first tray of the base towards the guiding hole along a second direction to abut against the drone, so as to release the buckling of the drone to the first battery, the second direction being opposite to the first direction;
• supporting the first battery on the first tray;
• and
• moving the first tray and the first battery away from the drone.