Patent attributes
A base structure includes a main body, a cover, a rod and an operating element. The main body includes a hollow portion, a containing portion for placing a battery module and an electrical connecting portion. The cover is combined detachably with the main body to cover the hollow portion. The operating element passes through the main body to connect to the rod, and drives the rod to move relative to the main body. After the cover is combined with the main body, the rod in a first position locks the cover. When the rod is moved from the first position to a second position, the rod unlocks the cover and pushes the cover outwards from the main body, and the rod pushes the battery module to be electrically disconnected from the electrical connecting portion at the same time.