Solid-state battery cell and battery device

The utility model discloses a solid-state battery cell and a battery device, and the solid-state battery cell comprises a positive plate which comprises a first base foil, a positive active material layer, a first solid-state electrolyte layer, a first side of the first base foil and a second side of the first base foil; the positive active material layer and the first solid electrolyte layer are at least coated on the first side; the first solid electrolyte layer is coated on the side part, far away from the first side, of the positive active material layer; the negative plate comprises a second base foil, a negative active matter layer and a second solid electrolyte layer, the second base foil has a third side and a fourth side, and the third side is opposite to the first side; the negative active material layer and the second solid electrolyte layer at least coat the third side, and the second solid electrolyte layer coats the side part, far away from the third side, of the negative active material layer;