A roller feeding device for powder

Abstract

The invention discloses a powder rolling feeding device, and belongs to the field of chemical power supplies. The powder rolling feeding device comprises a feed hopper; the feed hopper is positioned rightly above two pressure rollers of a rolling machine; a position for feeding powder between the two pressure rollers is a rolling port; the feed hopper is of a funnel structure for feeding the powder in the rolling port; the feed hopper consists of four baffle plates; impeller shafts parallel to pressure roller shafts are respectively arranged on the left and right sides of the rolling port; two ends of each impeller shaft are connected with two baffle plates perpendicular to the pressing roller shafts; two impeller shafts are connected with a rotary driving mechanism, and are driven by the rotary driving mechanism to oppositely rotate; each impeller shaft and the pressure roller in the same side are oppositely rotated; and the impeller shafts and the pressure rollers therebelow are provided with gaps at least capable of enabling silver pull nets to pass through. The powder rolling feeding device has such characteristics as uniform powder feeding speed, adjustable feeding quantity, capability of preleveling the silver pull nets, capability of adjusting the lengths of the silver pull nets and possession of an automatic powder leakage preventing function.

Description

technical field [0001] The invention belongs to the field of chemical power supply design, in particular to a powder rolling feeding device. Background technique [0002] Because of its excellent electrical and thermal conductivity and oxidation resistance, silver powder has become the material of choice for some battery positive electrode conductive fillers. The positive electrode of the aluminum-silver system battery is made of silver mesh as the skeleton, and the surface is filled with silver powder. After being rolled and formed, it is finally formed into a positive electrode. [0003] At present, the existing rolling feeding device often has the disadvantage of uneven feeding speed of silver powder, which leads to uneven distribution density of silver powder on the silver mesh, inconsistent silver powder adhesion strength and porosity of the positive electrode of the battery after rolling. Different problems; this problem will not only have a certain impact on the form...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing rolling feeding device often has the disadvantage of uneven feeding speed of silver powder, which leads to uneven distribution density of silver powder on the silver mesh, inconsistent silver powder adhesion strength and porosity of the positive electrode of the battery after rolling. Different problems; this problem will not only have a certain impact on the formation capacity, even after positive polarization, where the adhesion strength of silver powder is weak, slag and powder will appear after mechanical tests

[0004] In addition, the existing rolling feeding device cannot adjust the feeding amount, so it can only roll the positive electrode with a certain fixed thickness;

[0005] In addition, due to the existing rolling feeding device, there is no pre-leveling function for the silver expanded mesh before rolling, and the macroscopic unevenness of the silver expanded mesh will appear, resulting in inconsistent distribution of silver powder after rolling; at the same time, there is a lack of corresponding Length adjustment structure to roll the silver expanded mesh with different lengths;

[0006] Furthermore, powder leakage often occurs in the existing roller press feeding device, which increases the manufacturing cost

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