Copper foil warpage reducing heat treatment device and method

Abstract

The invention discloses a copper foil warpage reducing heat treatment device and a copper foil warpage reducing heat treatment method. A drying oven, a circulating air device and a heating device arecombined; heat in hot air is transferred to a copper foil by way of the first end of the drying oven so as to achieve a heating effect and lose a part of the heat, and cold air is sucked into the heating device by way of the second end of the drying oven through an air suction pipe under the action of the circulating air device, is heated and then enters the drying oven to form a closed circulating system; the air suction pipe can guarantee to suck away the cold air in the second end of the drying oven quickly and comprehensively; through cooperation of a circulating fan, an air supply pipe and the air suction pipe, generation of circulating air can be guaranteed; the temperature in the drying oven is detected through a temperature probe, a temperature detection result is fed back to a digital temperature controller, the digital temperature controller is adjusted so as to quickly, accurately and efficiently control the temperature of the copper foil in the drying oven; by a unique copper foil treatment method, copper foil treatment is more environmentally friendly and energy-saving, simple in operation, convenient and fast, and large in expansion space.

Description

technical field [0001] The invention belongs to the technical field of electrolytic copper foil production, and in particular relates to a copper foil warping heat treatment device and method. Background technique [0002] Electrolytic copper foil is produced by electrochemically depositing copper ions on the cathode titanium roller. As the thickness of the copper foil increases during the growth process of the copper foil, the electrochemical environment is constantly changing, and the composition of the copper foil grains The size and shape also change accordingly, the grain composition of the copper foil from the bright side to the matte side gradually changes from the initial equiaxed grain to columnar grain, and the grain also becomes larger; in the subsequent winding process , due to the existence of winding tension, the internal stress generated between grains of different sizes and shapes in the copper foil is also different, and the internal stress is time-sensitive...

AI Technical Summary

Problems solved by technology

[0003] Copper foil warping, on the one hand, affects the convenience of winding operation; on the other hand, it affects the uniformity of slurry distribution during coating by downstream customers, affects the quality of lithium batteries, and causes huge losses to the company

At present, the production process generally adopts heating method to reduce copper foil warping, but due to the limitations of production process and equipment, coupled with the lack of experience to learn from, the work efficiency is low, the treatment effect is not ideal, and the operation is cumbersome and difficult to use. high maintenance cost

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