Pre-lithiation method of graphite negative plate and equipment thereof

The invention discloses a pre-lithiation method of a graphite negative pole piece, which comprises the following steps: placing a negative pole piece in a dry low-temperature environment, then spraying an organic solution dissolved with metal lithium on the surface of the negative pole piece so that the negative pole piece is uniformly sprayed and active substances on the negative pole piece are completely wetted, then spraying cyclic carbonate on the surface of the negative pole piece, and carrying out pre-lithiation on the surface of the negative pole piece so as to obtain the graphite negative pole piece. And finally, drying in a drying box to finish pre-lithiation of the negative pole piece. The lithium metal is dissolved in the organic solvent and then pre-physicochemical is performed, so that the direct reaction of the lithium metal is avoided, the cost and the potential safety hazard are reduced, the pre-physicochemical is realized through simple spraying and drying, the process is simple, the processi