Lithium ion high-temperature aging device

The utility model discloses a high-temperature aging device for a lithium ion battery. The high-temperature aging device comprises a frame, at least one group of placing assemblies arranged in the frame and at least one flame-retardant bag arranged on the placing assemblies, a grid layer for placing a flame-retardant bag, a storage layer for placing a lithium ion battery and a movable layer for placing the flame-retardant bag are arranged on each group of placing assemblies at intervals from top to bottom; the storage layer comprises at least two transverse brackets for placing lithium ion batteries; the movable layer comprises at least one tray movably connected with the frame; and a flame-retardant substance is accommodated in the flame-retardant bag. The movable layer and the grid layerare arranged, and the flame-retardant bags are placed on the movable layer and the grid layer, so that fire spreading from top to bottom after the lithium battery is on fire is avoided, and safety production of the lithium b