Production process and system of positive and negative electrode paste of lithium battery

Abstract

The invention discloses a production process and a production system of positive and negative electrode paste of a lithium battery. Positive and negative electrode materials are added to a first-order twin-screw extruder through a conveying device; then the materials are added to a second-order twin-screw extruder so as to be shorn and emulsified, and the consistency processing is performed; and finally, the materials are vacuum-degassed, cooled and shorn to obtain the positive and negative electrode paste. The dispersion degree of lithium ions in the paste is increased, the quality and performance of the battery in the subsequent production is effectively improved, the productivity is increased, and the cost input is reduced.

Description

technical field

[0001] The invention relates to the production of lithium batteries, in particular to a production process and system for positive and negative electrode slurry of lithium batteries. Background technique

[0002] Lithium battery is a rechargeable battery that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. Lithium batteries are widely used in consumer electronics products, military products, aviation products, etc., and become a mainstream battery.

[0003] At present, the production of positive and negative electrode slurries for lithium batteries is produced by vacuum planetary mixers and power mixers. Mixing, dispersing, vacuum and other processes to obtain the finished slurry. Due to the uneven mixing and dispersion of the slurry made by the vacuum planetary mixer and the power mixer, the uneven contact between the powder particles and the binder, easy delamination and hard precipitation and other prob...

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