Graphitization furnace, method for manufacturing graphitization furnace, and battery production system

The embodiment of the invention provides a graphitization furnace, a manufacturing method of the graphitization furnace and a battery production system. The graphitization furnace comprises: a furnace body (100); the furnace cover (200) is provided with a feeding port (210), the surface, facing the interior of the furnace body (100), of the furnace cover (200) is provided with a concave part (220), and a protruding part (230) protruding towards the interior of the furnace body (100) is arranged between the concave part (220) and the feeding port (210). According to the technical scheme, the concave part is arranged on the surface, facing the interior of the furnace body, of the furnace cover, so that the distance between the surface, facing the interior of the furnace body, of the furnace cover and a high-temperature carbonaceous material in the furnace body can be increased, damage of the high-temperature carbonaceous material to the furnace cover is reduced, the use performance of the furnace cover and the