Quick sorting method based on retired power batteries and storage medium

Abstract

The invention discloses a rapid sorting method based on retired power batteries and a storage medium, and the method comprises the steps: 1, charging the retired power batteries under a preset condition, and recording a voltage variation U and an internal resistance R; 2, taking the voltage variation U, the internal resistance R and standard measurement data as clustering variables, collecting the clustering variables through CH1 and CH2 analog channels, sending the clustering variables to an analog-to-digital converter, and converting the clustering variables into digital semaphores; 3, processing the digital semaphore through a clustering algorithm, and outputting a label; 4, the labels correspond to the corresponding retired power batteries, and sorting is conducted according to the labels. According to the invention, clustering analysis can be carried out on the consistency of the single batteries by using the K-means method according to the variation of the voltage and the size of the internal resistance after the electric quantity with the same capacity is charged or discharged. According to the method, the battery voltage, the internal resistance and the battery capacity can be accurately associated, so that the batteries are classified efficiently. And therefore, the retired power battery can be effectively utilized in an echelon manner.

Description

technical field [0001] The invention belongs to the field of power batteries and relates to a battery sorting technology, in particular to a fast sorting method and a storage medium based on retired power batteries. Background technique [0002] Power batteries such as electric vehicles still retain a certain residual capacity and life after they are retired. However, due to different production processes and usage methods, there is always inconsistency between retired single cells. The modules composed of single cells with poor consistency are used for secondary use. Safety problems such as thermal runaway, battery spontaneous combustion, and shortening of life will occur when it occurs. Therefore, the research on the sorting method of retired power batteries is of great significance to further improve the energy utilization and safety of retired power batteries. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a fast sorting method bas...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a rapid sorting method based on decommissioned power batteries, which is used to solve the problem that the inconsistency of batteries leads to different charging and discharging curves in series, and the corresponding sorting of single batteries with different aging degrees is also different.

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