Device and method for spin-drying and infiltrating battery core of cylindrical battery

Abstract

The invention provides a spin-drying and infiltrating device for a battery core of a cylindrical battery. The spin-drying and infiltrating device is provided with a liquid collecting cylinder, an injection pipe and a roll core rotating device, wherein a battery core is arranged in the liquid collecting cylinder, the roll core of the battery core is connected with the roll core connecting part of the roll core rotating device, the driving connecting part of the roll core rotating device is directly or indirectly connected with the rotating shaft of a motor, and the injection pipe can extend into the hollow part of the roll core. When the rotating shaft of the motor drives the roll core rotating device to rotate, the whole battery core is driven to rotate, and under the action of centrifugalforce, a liquid in the winding part of the battery core can be thrown out or a liquid continuously injected into the roll core fully infiltrates the whole battery core. The invention also provides aspin-drying and infiltration method of the battery core of the cylindrical battery. Through the spin-drying and infiltrating device and the spin-drying and infiltrating method, the whole battery corecan be spin-dried and infiltrated, so that the production efficiency is improved, the spin-drying and infiltrating effects are guaranteed, and the energy consumption can be reduced.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a spin-drying and soaking device and a spin-drying and soaking method for cylindrical battery cells. Background technique [0002] Lithium slurry battery is a new type of lithium-ion battery with low cost, long life, high safety and easy recycling. Since lithium slurry itself has a dynamic contact conductive network, the electrode thickness can reach 10-50 times that of traditional lithium-ion batteries. Therefore, problems such as battery capacity drop and cycle life attenuation caused by shedding or loosening of traditional lithium-ion battery electrode materials can be avoided. Cylindrical lithium slurry batteries using a winding method can greatly simplify the processing technology of electrode sheets, and have obvious manufacturing cost advantages. [0003] Cylindrical lithium slurry batteries are similar to cylindrical lithium-ion batteries, and their production process also requi...

AI Technical Summary

Problems solved by technology

However, since the electrode sheet of the lithium slurry battery is relatively thick and the diameter of the cylindrical lithium slurry battery is several times that of the traditional cylindrical lithium ion battery, on the one hand, during the drying process, the inside of the battery core after winding It is more difficult for the solvent in the battery to diffuse to the outer surface of the battery core. Only using hot air drying to increase the evaporation rate of the solvent on the outer surface of the battery core has a limited effect on accelerating the diffusion of the solvent inside the battery core, and it consumes more energy during the entire drying process of the battery core. On the other hand, in the process of liquid infiltration such as battery injection, the infiltration liquid gradually penetrates the entire battery core from the inside and / or outside of the wound battery core through capillary action, and the time for the battery core to completely soak is longer, and The effect of infiltration cannot be guaranteed

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