Lithium supplement type battery pole group, preparation method and lithium supplement type battery

The invention discloses a lithium supplement type battery pole group which comprises a positive plate, a negative plate and a diaphragm, the battery pole group is a pole group prepared from a positive plate, a negative plate and a diaphragm in a winding or laminating form; the negative plate comprises a copper foil current collector, a negative active material layer, a lithium supplementing unit and a protective layer; the upper side surface and the lower side surface of the copper foil current collector are respectively coated with a negative electrode active material layer; a plurality of lithium supplementing units are uniformly adhered to one surface, far away from the copper foil current collector, of each negative electrode active material layer; a protective layer is sprayed on each negative electrode active material layer and the exposed surface of each lithium supplementing unit; the lithium supplementing unit is a lithium metal monomer with a preset shape; a plurality of bonding units are arranged o