Coating device

The utility model belongs to the technical field of pole piece coating, and provides a coating device which comprises a conveying assembly, a first die head assembly and a second die head assembly. The conveying assembly is used for mounting pole pieces and enabling the pole pieces to move in the length direction; the first die head assembly comprises a first driving mechanism and a plurality of first die head components capable of independently moving, the first die head components are arranged opposite to the first coating surface and are arranged at intervals in the width direction of the first coating surface, and the first driving mechanism is connected with the first die head components; the first driving mechanism can drive the first die head components to move in the width direction. And the second die head assembly is opposite to the second coating surface. The utility model aims to improve the alignment accuracy of the upper film areas of the two coating surfaces of the pole piece so as to improve the quality of the pole piece and the battery monomer.