Coating method, coating die head and coating equipment

The invention provides a coating method, a coating die head and coating device.The coating method comprises the steps that a plurality of first containing cavities in the die head are filled with slurry with different conductivities; enabling the slurries with different conductivities in the plurality of different accommodating cavities I to be gathered in different areas in the same accommodating cavity II, connecting the adjacent different areas with each other, and partially fusing the slurries with different conductivities at the connecting part; and the slurry with different conductivities, which is collected in the same accommodating cavity II, is coated on a base material through a die head. The coating method, the coating die head and the coating equipment provided by the invention are used for coating different areas of the base material with a plurality of groups of slurry with different conductivity, so that the heat distribution efficiency of the dressing of the pole piece from the tab end to the