A device and method for drying and soaking cylindrical battery cells

Abstract

The invention provides a spin-drying and soaking device for electric cores of cylindrical batteries, which is provided with a liquid collecting cylinder, an injection pipe and a winding core rotating device. The battery core is placed in the liquid collection cylinder, the winding core of the battery core is connected to the winding core connection part of the winding core rotating device, and the driving connection part of the winding core rotating device is directly or indirectly connected to the rotating shaft of the motor, and the injection pipe can be extended into the In the hollow part of the core. When the rotating shaft of the motor drives the winding core rotating device to rotate, it drives the entire battery core to rotate. Under the action of centrifugal force, the liquid in the winding part of the battery core can be thrown out or the liquid continuously injected into the winding core can fully soak the entire battery core. In addition, the invention also provides a drying and soaking method for the battery core of the cylindrical battery. Through the drying and soaking device and the drying and soaking method of the present invention, the whole battery cell can be dried and soaked, which is beneficial to improve production efficiency, ensure drying and soaking effects and save energy consumption.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a drying and soaking device and a 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. Due to the dynamic contact conductive network of lithium slurry itself, the thickness of the electrode can reach 10-50 times that of traditional lithium ion battery. Therefore, problems such as battery capacity reduction and cycle life degradation caused by falling or loosening of electrode materials in traditional lithium-ion batteries can be avoided. The cylindrical lithium slurry battery using the winding method can greatly simplify the processing process of the electrode sheet, and has obvious manufacturing cost advantages. [0003] The cylindrical lithium slurry battery is similar to the cylindrical lithium ion battery, and its production process...

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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