Foamed aluminum pole piece coating equipment and pole piece manufacturing method applying same

Abstract

The invention provides foamed aluminum pole piece coating equipment and a pole piece manufacturing method applying same. The foamed aluminum pole piece coating equipment comprises a slurry pool, the slurry pool comprising an extrusion roller, a first cavity being formed in the slurry pool, the extrusion roller being arranged in the first cavity containing slurry, the extrusion roller comprising a roller and blades connected with the roller, the blades protruding towards the outer side of the roller, and the extrusion roller being used for enabling the blades to guide the slurry to a foamed aluminum pole piece through rotation; a scraping plate mechanism, comprising a first scraping plate and a second scraping plate which are arranged at an interval, comb-shaped tooth structures being arranged on the first scraping plate and the second scraping plate, and the comb-shaped tooth structures being used for scraping part of slurry on the surface of the foamed aluminum; a driving mechanism, arranged on the side, away from the slurry pool, of the scraper mechanism and used for driving the foamed aluminum pole piece to move relative to the scraper mechanism and the slurry pool. The foamed aluminum pole piece coating equipment can ensure that slurry in foamed aluminum is filled compactly, and can also achieve the effects of automatic coating, redundant slurry scraping, standing for drying, accurate pole piece thickness control and the like.

Description

technical field [0001] The present application relates to the field of new energy, in particular to a foamed aluminum pole piece coating equipment and a pole piece production method using the same. Background technique [0002] The capacitive carbon carrier material used in mainstream supercapacitors is aluminum foil. However, due to the limitation of the coating thickness of the aluminum foil and the amount of carbon loaded on the aluminum foil, the bottleneck of the voltage window of the supercapacitor cannot be broken through. Therefore, the three-dimensional porous current collector has become a new development research trend in the industry. However, the foamed aluminum three-dimensional current collector is different from the conventional aluminum foil coating method. Its tension and winding performance are far inferior to aluminum foil, and the permeability of the coating And uniformity requirements are high, and the conventional aluminum foil coating method cannot b...

AI Technical Summary

Problems solved by technology

This process is suitable for continuous winding aluminum foil, but if the three-dimensional through-hole foamed aluminum adopts this process, the coating slurry will pass through the foamed aluminum to cause a large amount of material leakage during the coating process, resulting in waste of materials and high production costs; and, The aluminum foam pole piece has a three-dimensional structure, and the slurry needs to be evenly filled in the three-dimensional structure. Single-sided extrusion coating will cause uneven thickness of the slurry on both sides of the pole piece, which will affect the yield of the pole piece

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