Solid-state battery double-sided pole piece as well as preparation method and rolling device thereof

The invention belongs to the technical field of lithium ion batteries, particularly relates to a double-sided pole piece of a solid-state battery, and further discloses a preparation method of the double-sided pole piece and a rolling device for processing the double-sided pole piece. The preparation method of the double-sided pole piece comprises the following steps: preparing a continuous active layer by adopting a dry method, punching the active layer to form an active layer with a required size, and simultaneously carrying out roll forming on the selected active layers on two sides and a selected current collector strip by utilizing a continuous roll forming device. The active layers are dry-method positive active layers, the upper and lower active layers are prepared in the same batch, the internal conductive network and material distribution consistency is high, the upper and lower layers do not cause the phenomenon of nonuniform distribution of secondary material particles due to gravity, and the A and