Crushing stirring device for waste LiFePO4 power battery

Abstract

The invention relates to a crushing stirring device for a waste LiFePO4 power battery. The crushing stirring device comprises a frame and a crushing device fixed on the frame; a feeding hopper is arranged above the crushing device; a stirring device is arranged under the crushing device; the crushing device and the stirring device are both connected with a power device; the crushing device comprises a driving hob set and a driven hob set which are oppositely arranged; the stirring device comprises a stirring barrel, a stirrer arranged in the stirring barrel and a discharging pipe arranged on the bottom of the stirring barrel; dilute alkali liquor is filled in the stirring barrel. According to the technical scheme of the invention, the crushing device is used for grinding and cutting the waste LiFePO4 power battery so as to form regularly shaped sheet crushed aggregates, and then the stirring device is used for effectively separating powder on anode aluminum foil current collector and cathode copper foil current collector so as to supply a reliable guarantee for the subsequent winnowing process and increase the winnowing efficiency.

Description

technical field [0001] The invention relates to the field of power battery recycling, in particular to a method for waste LiFePO 4 Crushing and stirring device for power battery. Background technique [0002] Since the 21st century, new energy vehicles have become one of the key development directions for countries all over the world to achieve energy conservation and emission reduction. In recent years, my country's new energy automobile industry has developed rapidly with the support of government policies. By 2020, my country's annual output of new energy vehicles will reach 2 million, and the cumulative output will exceed 5 million. With the rapid increase in the use of new energy vehicles, LiFePO 4 The amount of scrapped power batteries will increase year by year. By 2020, my country's LiFePO 4 The accumulated waste of power batteries will reach 120,000 to 170,000 tons. Waste LiFePO 4 If the power battery is not disposed of properly, the organic matter and precio...

AI Technical Summary

Problems solved by technology

Waste LiFePO 4 The winnowing and recycling process of power batteries is mainly divided into two stages: pretreatment stage and winnowing stage. The winnowing stage is aimed at waste LiFePO 4 The effect of crushing products of power batteries is obvious, but the shape of the products crushed and screened by the crushing and screening devices currently on the market is extremely irregular, and the particle size of the crushed products has not yet reached the effective wind selection range of the existing air separators, and classification has not been achieved Wind separation; In addition, the electrode material carbon powder and lithium iron phosphate on the copper foil and aluminum foil current collectors that have been crushed and screened cannot be effectively separated from the copper foil and aluminum foil current collectors. Spent LiFePO with regular shape 4 Power battery products, which can effectively separate electrode material carbon powder and lithium iron phosphate powder from copper foil and aluminum foil current collectors, have certain practical significance and application markets, and are of great significance to the development of my country's new energy industry and the reduction of environmental pollution. huge

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