Ternary positive electrode material performance index comprehensive evaluation method and device

Abstract

The invention discloses a ternary positive electrode material performance index comprehensive evaluation method and device, and the method comprises the steps: obtaining SEM images of a ternary positive electrode material under different sintering temperature curves in a preparation process, and extracting three key microscopic multi-scale information features of the tortuosity, roughness and primary particle size of the ternary positive electrode material in the SEM images; taking the specific surface area and the particle size of the ternary positive electrode material as key performance indexes of a product, predicting the specific surface area according to the extracted tortuosity and roughness, predicting the particle size according to the extracted primary particle size, and evaluating the performance index of the ternary positive electrode material based on the established comprehensive evaluation model for the performance index of the ternary positive electrode material. And comprehensive evaluation of key performance indexes of the ternary positive electrode material is realized. According to the ternary positive electrode material performance index comprehensive evaluation method and device disclosed by the invention, the product quality can be evaluated in real time, the real-time performance is good, and the evaluation precision is high; and the sintering process is regulated and controlled in real time, the controllability is high, and the product consistency is good.

Description

technical field [0001] The invention relates to the technical field of product performance evaluation methods of ternary positive electrode materials, and particularly discloses a method and device for comprehensive evaluation of performance indexes of ternary positive electrode materials integrating multi-scale information of SEM images. Background technique [0002] The sintering process of the ternary cathode material is the core process of the material preparation process. The sintering process is carried out in the roller kiln. During the sintering process, the roller kiln is in a closed state, so it is difficult to monitor the product status during the sintering process. After the sintering is completed, the product quality can be evaluated by obtaining the product performance index information through off-line testing of the product, but the product quality cannot be evaluated in real time. However, the sintering process takes a long time. Due to the lack of real-time...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a comprehensive evaluation method and device for performance indicators of ternary cathode materials, aiming to solve the technical problem that the existing evaluation methods for ternary cathode materials cannot evaluate product quality in real time

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