New energy power battery cell protection device with steps and battery cell

The utility model discloses a new energy power battery cell protection device with a step and a battery cell, and the new energy power battery cell protection device comprises a battery cell shell which is in a rectangular body shape with an opening at the upper end part; the shell step is arranged at the inner periphery of the upper end opening of the battery cell shell, and the thickness range of the shell step is 0.15 to 0.25 mm; and the shell cover plate is arranged on the shell step, and the shell cover plate downwards seals the battery cell shell to form internal closed protection. According to the utility model, the battery cell shell is formed by stamping and stretching aluminum plates. The battery cell shell structurally adopts a design scheme that a shell step is additionally arranged on the periphery of the upper end of an opening in the battery cell shell, the thickness is about 0.2 mm, and the height is designed according to the thickness of a shell cover plate. When the shell cover plate is weld