This automatic loading solution of battery packs into clusters is a complete set of automated process solution applied in energy storage system integration factories. Cooperated with intelligent equipment, vision positioning, force sensing, material handling system and MES interconnection, it replaces the traditional operation mode using forklifts and manual adjustment. The solution realizes fully automatic and high-precision loading of heavy-duty battery packs into designated positions of cluster racks inside energy storage containers with non-damage assembly, covering the whole workflow including container feeding, battery pack transportation, position alignment, pack insertion, locking and data uploading.