Double-layer drying oven system of lithium battery diaphragm

The utility model discloses a double-layer drying oven system of a lithium battery diaphragm. A drying oven body in the system comprises an upper oven body, a middle oven body and a lower oven body; two diaphragm conveying lines of the lithium battery diaphragm are respectively arranged in the upper-layer drying oven and the lower-layer drying oven, the upper-layer drying oven is positioned between the upper box body and the middle box body, and the lower-layer drying oven is positioned between the middle box body and the lower box body; a lifting module is arranged between the middle box body and the lower box body, and an opening and closing module is arranged between the upper box body and the middle box body; when the lower-layer drying oven is cleaned, the lifting module integrally lifts the upper box body and the middle box body so as to increase the distance between the upper surface of the lithium battery diaphragm and the lower surface of the middle box body; when the upper-layer drying oven is clean