All-solid-state battery manufacturing method
An all-solid-state battery manufacturing apparatus disclosed herein includes a transport apparatus, a press roller, and an adhesive provision apparatus. The transport apparatus transports an active material layer. The press roller has a foil attachment surface, which is a cylindrical surface to which the current collection foil is to be attached. The press roller rotates and moves the current collection foil attached to the foil attachment surface to the surface of the active material layer being transported by the transport apparatus and presses the current collection foil and the active material layer between the press roller and the transport apparatus. The adhesive provision apparatus is provided on a movement path of the current collection foil rotated and moved by the foil attachment surface of the press roller, and provides an adhesive to the current collection foil attached to the press roller.
1. A manufacturing method for manufacturing an all-solid-state battery in which a current collection foil and an active material layer are stacked, the manufacturing method comprising:
a current collection foil attachment step of attaching the current collection foil to a foil attachment surface of a press roller that includes the foil attachment surface, which is a cylindrical surface, and that is configured to rotate using a central axis of the cylindrical surface as a rotational axis, wherein the press roller includes a plurality of ventilation holes that extend from the foil attachment surface to an interior, and the current collection foil is attached to the foil attachment surface due to a gas being suctioned from the ventilation holes to the interior;
an adhesive provision step of providing an adhesive on the current collection foil attached to the foil attachment surface; and
a pressing step of rotating and moving the current collection foil attached to the foil attachment surface to a surface of the active material layer being transported by a transport apparatus by rotating the press roller, and pressing the current collection foil and the active material layer in a thickness direction between the press roller and the transport apparatus.
2. The manufacturing method according to claim 1 , further comprising a thickness adjustment step of adjusting a thickness of the adhesive by bringing an adhesive contact surface of an adhesive roller that has the adhesive contact surface, which is a cylindrical surface, and that is configured to rotate using an axis parallel to the rotational axis of the press roller as a rotational axis into contact with the adhesive on the current collection foil attached to the foil attachment surface.
3. The manufacturing method according to claim 2 , wherein the adhesive provision step and the thickness adjustment step are performed at the same time by transferring the adhesive supplied to the adhesive contact surface of the adhesive roller to the current collection foil attached to the foil attachment surface.
4. The manufacturing method according to claim 1 ,
wherein the adhesive is a photocurable adhesive that is cured due to a curing light being emitted thereto, and
the manufacturing method further comprises a curing light emission step of emitting the curing light to the adhesive.
5. The manufacturing method according to claim 1 , wherein a viscosity of the adhesive when provided to the current collection foil in the adhesive provision step is 100 mPa·s to 5000 mPa·s.
6. The manufacturing method according to claim 1 ,
wherein a surface of the current collection foil to which the adhesive is to be provided is coated with carbon, and
a viscosity of the adhesive when provided to the current collection foil in the adhesive provision step is 500 mPa·s to 1500 mPa·s.