Copper foil warpage reducing heat treatment device and method

A heat treatment device and heating device technology, applied in electrolysis process, electroforming, etc., can solve the problems of company loss, low work efficiency, high use and maintenance costs, and achieve the effects of reducing consumption, convenient operation, and widening the working space

Pending Publication Date: 2019-02-26
陕西汉和新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Copper foil warpage reducing heat treatment device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1, such as figure 1 Shown:

[0056] A copper foil warping heat treatment device, comprising:

[0057] An oven 10 for placing copper foil;

[0058] A circulating air device for blowing wind from the first end of the oven 10 and extracting the wind from the second end of the oven 10;

[0059] A heating device for heating the wind blown into the oven 10 by the circulating air device; the heating device is installed on the air supply pipeline of the circulating air device.

[0060]According to the second law of thermodynamics (heat can be spontaneously transferred from a high-temperature object to a low-temperature object, but it is impossible to spontaneously transfer from a low-temperature object to a high-temperature object), the heat in the hot air passes through the first The end is transferred to the copper foil to play a heating role and lose part of the heat. Under the action of the circulating air device, the cold air is drawn into the heating device thr...

Embodiment 2

[0061] Example 2, such as figure 1 Shown:

[0062] The difference between this embodiment and embodiment 1 is:

[0063] The second end of the oven 10 is provided with an operation port 9 , and the operation port 9 is sealed by setting a sealing device 8 .

[0064] The copper foil can be put in and taken out through the operation port 9; and the sealing device 8 can ensure that the oven 10 is in a sealed state during operation.

Embodiment 3

[0065] Example 3, such as figure 1 Shown:

[0066] The difference between this embodiment and Embodiment 1 is that the circulating air device includes:

[0067] Circulation fan 3;

[0068] The air supply pipeline; the air outlet of the circulating fan 3 communicates with the first end of the oven 10 through the air supply pipeline;

[0069] 7 way exhaust pipe;

[0070] Exhaust duct 7; the exhaust duct 7 is installed inside the oven 10, the exhaust duct 7 includes a plurality of sub-exhaust ducts 7 with open first ends, and the first end of the sub-exhaust duct 7 is located inside the second end of the oven 10 , the air inlet of the circulating fan 3 communicates with the second ends of the plurality of sub-exhaust pipes 7 through the air-exhaust pipes 7.

[0071] The unique structural design of the exhaust duct 7 can ensure that the cold air located at the second end of the oven 10 can be quickly and comprehensively taken away; the combination of the circulation fan 3, the...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/04C25D5/50C22F1/08
CPCC22F1/08C25D1/04C25D5/50
Inventor 王冠毅杜冠明董国飞李伟周赞雄焦新波葛赞博
Owner 陕西汉和新材料科技有限公司
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