Composite current collector pole piece, battery cell and lithium battery

The utility model discloses a composite current collector pole piece, a battery cell and a lithium battery. The composite current collector pole piece comprises a coating area, the non-coating area is formed at the end part of the length direction of the coating area; the uncoated area is divided into a non-foldable part in contact with the coated area and a foldable part connected with the non-foldable part; and the foldable part can be folded towards one side of the corresponding non-foldable part and is arranged on the upper surface of the corresponding non-foldable part. According to the composite current collector pole piece disclosed by the utility model, the foldable part is subjected to folding treatment and adopts the same specification, so that the problem of poor cell consistency caused by adopting different pole pieces for lamination is solved, and the pole piece enables the upper and lower conductive layers of each composite current collector pole piece to realize stable electric connection. 本实用新