Connecting structure of battery box of electric vehicle

The utility model relates to the technical field of electric vehicle battery boxes, and discloses a connecting structure of an electric vehicle battery box, which comprises a battery bin, a slot is arranged at the center of the battery bin, and a hole is arranged at the bottom of the slot arranged at the center of the battery bin. Through the first spring, the pawl, the ratchet wheel and the gear, after the battery box is inserted into the battery bin, the first spring abuts against the bottom of the battery box through the gasket, the fixing pin is jacked upwards to make contact with the surface of the ratchet wheel, and at the moment, the bottom of the battery box is jacked by the first spring so that the fixing pin can be tightly attached to the lower surface of a tooth block fixed to the surface of the ratchet wheel; when bumping occurs, upward displacement of the battery box can be avoided through a ratchet wheel, and downward impact force of the battery box can be buffered through a first spring, so tha