Carbonization equipment for processing silicon-carbon negative electrode material of lithium ion battery

Abstract

The invention discloses carbonization equipment for processing a silicon-carbon negative electrode material of a lithium ion battery. The carbonization equipment comprises a box body mechanism, a stirring mechanism rotationally connected to the box body mechanism, a spraying mechanism fixedly connected to the inner upper side of the the box body mechanism, a fixed support fixedly connected to the inner lower side of the box body mechanism and a weighing plate arranged between and slidably connected with the box body mechanism and the fixed support, wherein the spraying mechanism is in transmission connection with stirring mechanism; a wall scraping mechanism and a limiting mechanism are arranged on the stirring mechanism; a drying mechanism is rotationally connected to the fixed support; the drying mechanism is in transmission connection with the stirring mechanism; and a first spring is arranged between the weighing plate and the box body mechanism. According to the invention, the wall scraping mechanism is driven by the gravity of materials to make contact with the inner wall of the box body mechanism, so a solvent or a coating material on the inner wall of the box body mechanism is scraped off in a rotating process, and the situation that the solvent or the coating material is attached to the inner wall of the box body mechanism and cannot be discharged is prevented.

Description

technical field [0001] The invention belongs to the technical field of electrode production, and in particular relates to a carbonization device for processing silicon-carbon negative electrode materials of lithium-ion batteries. Background technique [0002] Graphite materials such as graphite powder and graphite film are used more and more widely due to their unique electrical and thermal properties. Graphite used in lithium-ion batteries has the advantages of high working voltage, high specific energy, light weight, small size, long cycle life, fast charge and discharge, and no environmental pollution. However, the compatibility of graphite and electrolyte is poor, which limits Therefore, it is necessary to modify the graphite material, and coat a layer of amorphous carbon material on the graphite surface to increase the tap density and increase the battery charge and discharge capacity; the coated graphite reaction The process is generally to disperse the graphite in th...

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Problems solved by technology

Graphite used in lithium-ion batteries has the advantages of high working voltage, high specific energy, light weight, small size, long cycle life, fast charge and discharge, and no environmental pollution. However, the compatibility of graphite and electrolyte is poor, which limits Therefore, it is necessary to modify the graphite material, and coat a layer of amorphous carbon material on the graphite surface to increase the tap density and increase the battery charge and discharge capacity; the coated graphite reaction The process is generally to disperse the graphite in the liquid coating material or the molten coating material, then evaporate the solvent or the coating material to coat the amorphous carbon precursor on the surface of the graphite material, and then carbonize; during the processing Due to the equipment structure of the carbonization furnace, the solvent or coating material often adheres to the inner surface of the carbonization furnace and is heated unevenly, which seriously affects the carbonization effect of the device.

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