Electroforming molding and punching integrated porous copper foil manufacturing system and method

Abstract

The invention discloses an electroforming and punching integrated porous copper foil manufacturing system and method, and belongs to the technical field of porous copper foil processing. The system comprises an electroforming unit I, an electrolytic hole making unit II and an electrolyte circulating unit III, wherein the electrolytic hole making unit II comprises a copper foil conveying roller, a copper foil pressing roller, an arc-shaped permanent magnet, a copper foil winding roller, a movable mask belt, an arc-shaped cathode, a first mask belt tensioning roller, a second mask belt tensioning roller, a mask belt driving roller and an electrolytic power supply. During processing, the copper foil is wound on the winding roller after passing through the rollers and the movable mask belt, and the spatial position of each roller is adjusted, so that the copper foil is tightly pressed and attached to each part; opening an overflow valve, and spraying the electrolyte to the movable mask belt at a high speed; and turning on a power supply, dissolving the copper material in the exposed area, and gradually forming the through holes from the micro pits along with the forward movement of the mask belt. According to the invention, integration, continuity and synchronization of copper foil forming and punching can be realized, the process flexibility and adaptability are improved, and the high-quality and high-efficiency preparation requirements of the copper foil with massive holes are met.

Description

technical field [0001] The invention relates to a porous copper foil manufacturing system and method integrating electroforming and punching, and belongs to the field of porous copper foil processing. Background technique [0002] Copper foil is an important material for lithium battery manufacturing. Punching micro-holes on the surface of copper foil can reduce the weight of copper foil required in lithium batteries, improve the capacity and cycle performance of lithium batteries, and increase the coating amount of surface electrode materials to ensure that the battery reliability. [0003] At present, the fabrication methods of copper foil micro-holes include: mechanical drilling (see Chinese patent CN214110666U), chemical etching (see Chinese patent CN109440108B), and laser perforation (see Chinese patent CN109877470A). The mechanical drilling uses a punching machine. Due to the thin copper foil, the mechanical drilling has the problems of easy deformation of the foil, u...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the existing porous copper foil preparation, such as low process flexibility, poor efficiency and surface quality of the prepared copper foil holes, the present invention proposes a porous copper foil manufacturing system integrating electroforming and punching and method

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