Production equipment of copper foil of negative current collector of ultra-thin lithium battery

Abstract

The invention discloses production equipment of a copper foil of a negative current collector of an ultra-thin lithium battery. The production equipment comprises a control box and is characterized by also comprising an adhering device, a separating device, a first tension detecting device, an anti-oxidation device, a cleaning device, a second tension detecting device, a baking device and a receiving device, wherein the adhering device, the separating device, the first tension detecting device, the anti-oxidation device, the cleaning device, the second tension detecting device, the baking device and the receiving device are connected with the control box, are controlled by the control box and are arranged in sequence. The production equipment disclosed by the invention has the advantages that the design is reasonable, copper ions in copper sulfate are precipitated under the action of an electric field, are absorbed on a negative roll and are washed by a spraying device and the washed copper ions enter an anti-oxidation groove after bypassing a peeling roll and a detecting roll; after anti-oxidation treatment, the surface of the copper foil enters a washing groove to be subjected to bleaching, finally the bleached copper foil is dried by a drying oven after passing through the detecting roll and then is wound, and then the copper foil of the negative current collector of the ultra-thin lithium battery is prepared, so that the production procedure can be effectively shortened and the working efficiency can be improved.

Description

technical field [0001] The invention relates to the field of copper foil preparation, in particular to an ultra-thin lithium battery negative electrode current collector copper foil production equipment for producing ultra-thin lithium battery negative electrode current collector copper foil. Background technique [0002] With the development of a highly informationized society, mobile phones and notebook computers are rapidly popularized. As people begin to pay attention to environmental protection and energy saving, the development of electric vehicles has attracted much attention. As the power source of the above products, lithium batteries are the most ideal energy source. . Electrolytic copper foil not only serves as the carrier of the negative electrode active material in the lithium battery, but also acts as the collector and transporter of the negative electrode electron flow. Therefore, the electrolytic copper foil current collector has a great influence on the ele...

AI Technical Summary

Problems solved by technology

However, due to the development of these electronic products in the direction of miniature, thin and large capacity, the requirements for copper foil, the main raw material for making lithium batteries, are getting higher and higher. The original electrolytic copper foil cannot meet its requirements, so it is necessary to develop a suitable Copper foil required for lithium battery production

Traditional ultra-thin lithium battery negative electrode current collector copper foil production equipment technology cannot mass-produce lithium battery copper foil lower than 9μ, while the lithium battery copper foil market requires development to be lower than 12μ

At present, the thinnest is 8μm, so the post-processing machine made in China cannot meet the requirements. Although the world's most advanced post-processing machine made in Japan can process 8μm copper foil, the investment cost of each processor is huge, and the 6μm copper foil is not enough. Mass production, low work efficiency, and the tensile strength and elongation of the copper foil produced are not very ideal

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