Classified collection method for positive and negative electrode powder of waste lithium battery and related device

The invention discloses a classified collection method for positive and negative electrode powder of a waste lithium battery and a related device.The method comprises the steps that the disassembly states of a positive plate and a negative plate of the waste lithium battery are detected; controlling drying equipment to dry the positive plate and the negative plate based on a detection result; carrying out maximum inscribed rectangle calculation processing on the dried positive plate and negative plate to obtain a first maximum inscribed rectangle and a second maximum inscribed rectangle; first and second related parameters obtained based on the first and second maximum inscribed rectangles are transmitted to a plurality of crushing and powdering devices; adjusting working parameters based on the first and second related parameters, and pulverizing the dried positive plate and the dried negative plate by the pulverizing equipment; and respectively screening the positive and negative electrode powder, and filli