Box-type furnace charging method and device

The invention relates to the technical field of graphitization furnaces, in particular to a charging method and device of a graphitization box-type furnace for a lithium ion battery negative electrode material. According to the box-type furnace charging method, a box body is composed of graphite paper and graphite plates, the graphite paper is arranged at the bottom of the box body, and the graphite plates are arranged on the first side wall, close to an electrode, of the box body and the second side wall opposite to the first side wall. A third side wall connected with the first side wall and the second side wall and a fourth side wall opposite to the third side wall are plywood adhered with graphite paper, and the plywood is fixed by a wood bracket and a furnace wall; multiple layers of materials are placed in the box body, and a layer of graphite paper is placed on the surface of each layer of material; and insulating layers are arranged outside the third side wall and the fourth side wall. The charging me