Calcination and cooling system for battery material under inert atmosphere and its application method

Abstract

The invention discloses a battery material roasting and cooling system under an inert atmosphere, which includes an inert gas bottle, a vortex tube, an inert atmosphere cooling box, an inert gas storage bag, a tube furnace, a heat-conducting ceramic plate at a semiconductor hot end, a semiconductor thermoelectric power generation module and Tube furnace waste heat transfer mechanism. The invention also discloses an application method of the above-mentioned roasting and cooling system, which performs radiation-convection comprehensive heat exchange on the battery material placed in the cooling chamber, and at the same time recovers the heat in the tube furnace through the tube furnace waste heat transfer mechanism, and utilizes the semiconductor hot end The heat-conducting ceramic plate absorbs heat and uses the semiconductor thermoelectric power generation module to generate power to provide power for the fluid delivery in the roasting cooling system; the previous inert gas is injected into the inner roasting area during the next roasting. Aiming at the particularity that the battery material cannot be cooled naturally, the invention allows the battery material to be roasted in an inert atmosphere and cooled in a closed environment to improve the performance of the battery material and fully recover the waste heat in the tube furnace.

Description

technical field [0001] The invention relates to the technical field of battery material preparation devices, in particular to a battery material roasting and cooling system under an inert atmosphere and an application method thereof. Background technique [0002] Baking is usually required in the preparation of battery materials, and the morphology, crystal structure, and electrochemical properties of sintered products often have a great relationship with the sintering system and cooling system. Generally, rapid cooling can increase the degree of supercooling to increase the crystallinity of the material, refine the grains, and make the material have better electrochemical performance. Patent CN109148879A discloses a method for synthesizing lithium-rich manganese-based cathode materials by quenching with liquid nitrogen, which shows that increasing the cooling rate can improve the electrochemical performance of the material. [0003] At this stage, in the process of prepari...

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Problems solved by technology

After the former takes out the electrode material, the high-temperature electrode material placed in the air is easily oxidized by the air, which makes it difficult for the obtained electrode material to meet the requirements; the latter is naturally cooled in an argon atmosphere, but the cooling cycle is too long, which affects the battery material. The normal process and cycle of preparation will also cause too much waste of argon resources, and products with fine grains and high crystallinity cannot be obtained, and a large amount of heat converted from electric energy in the tube furnace will be directly dissipated, which is not conducive to energy consumption. maximize the use of

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