The present invention relates to the technical field of electrode manufacturing, in particular to a dry electrode manufacturing method based on ultrasonic coating. The method comprises the following steps: feeding an active material and a conductive agent into a screw feeder, conveying and pre-mixing them through a feeding screw to form powder; adding the powder into a twin-screw extruder for mixing, and simultaneously adding a binder and additives through another material injection port of the twin-screw extruder; fully mixing the powder, binder and additives through the screws of the twin-screw extruder to obtain a uniformly distributed fibrillated slurry; transferring the slurry onto a current collector, and then performing flattening, uniform distribution and thickness reduction control using a multi-station ultrasonic scraper and a pressure roller to complete electrode manufacturing. In the present invention, ultrasonic scrapers at different stations are used as the key process of coating, a high-precision delivery pump controls the amount of slurry, the slurry is directly laminated with the current collector, and then full quality inspection and feedback are carried out through an X-ray and machine vision inspection system, with minimal yield loss.
Country Code: CN
Application Number: CN202410251196.5
