The present invention discloses an automatic lithium battery sorting method, a storage medium, and a battery sorting device. The method comprises: performing formation and capacity sorting on lithium battery cells in advance, a battery sorting device acquiring charging-discharging current and voltage measurement data during the formation and capacity sorting, and pre-processing the acquired measurement data; plotting a measurement curve on the basis of the pre-processed measurement data, matching the same against a pre-stored charging-discharging reference curve, and calculating a linear normalized distance, a squared distance, and a first-order derivative distance; and calculating a weighted distance of each of the distances and a weighted distance sum, comparing and matching the weighted distance sum against pre-determined threshold ranges of groups, and outputting the matching result to a pre-determined automatic group sorting machine to achieve lithium battery sorting. The automatic lithium battery sorting method provided by the present invention involves simple calculation, accurately sorts lithium batteries, and guarantees the consistency of battery parameters, thereby increasing the service life of a power battery pack.
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