| abstract |
The present invention relates to a selection and evaluation method for gradient utilization of a power cell. The method comprises: (1) performing appearance recognition and selection on a power cell recycled from an electric motor, and determining whether the power cell enters a gradient utilization stage; (2) performing performance characteristic analysis on a power cell that enters the gradient utilization stage, and determining whether the cell has a gradient utilization value; and (3) detecting changes of the internal microstructure of the power cell for gradient utilization, and evaluating safety and health of the cell. |