Coating die head, coating device and coating method

The invention provides a coating die head, a coating device and a coating method. The coating die head comprises a first die head and a second die head, and the first die head and the second die head are connected and define a slit to output slurry; the first die head comprises a die head body, a lip part and a lip adjusting assembly; the lip part is connected with the die head body and located at the discharging end of the slit. The lip adjusting assembly is used for adjusting the temperature of the lip part so as to control the lip part to deform. According to the scheme, the coating consistency can be improved.