▎ 摘　　要

NOVELTY - The application claims a graphene electric heating film for large area heat supply, comprising an electric heating layer, a barrier layer respectively set on the electric heating layer top part the bottom, the electric heating layer comprises a plurality of vertically interval graphene electric heating coating, at least three conductive copper foils set transversely, interval of the conductive copper foil are connected to the bottom of all the graphene electric heating coating, the first end of the conductive copper foil is electrode access end, the tail end of the conductive copper foil is an insulating end, and the electrodes of the electrode access ends of two adjacent conductive copper foils are arranged oppositely. The application model ensures the effective heating area of the whole electro-thermal film by the graphene electro-thermal coating set by the interval, the plurality of conductive copper foils matched with the electrode interval reduce the distance between the positive negative electrode and the zero line on the electro-thermal film, combined with the principle of graphene electro-thermal coating radiation heating, improving the heating efficiency of the whole electro-thermal film, It ensures the feasibility and reliability of the large area heat supply of the electric heating film when the safe voltage is supplied.