Sodium ion battery with good corrosion-resistant effect

The utility model discloses a sodium ion battery with good corrosion resistance effect, which comprises a shell, four corners of the bottom of the inner cavity of the shell are fixedly connected with buffer boxes, two sides of the inner cavity of each buffer box are fixedly connected with limiting rods, the surfaces of the limiting rods are connected with buffer plates in a penetrating manner, the bottoms of the surfaces of the limiting rods are sleeved with springs, and the springs are connected with the buffer plates in a penetrating manner. The top of the buffer plate is fixedly connected with a moving column, and the top of the moving column penetrates through the top of the buffer box and is fixedly connected with a fixed plate. Through cooperation of the shell, the buffer box, the limiting rod, the buffer plate, the spring, the movable column, the fixed plate, the battery body, a rubber pad, a sliding groove, a sliding block, a wire, a terminal, a drying box, a base layer, an anti-corrosion layer and a