Pore forming device, microporous current collector foil and preparation method of microporous current collector foil
A technology of hole forming device and convex column, applied in the direction of electrode carrier/current collector, metal processing, etc., can solve the problems of burrs on the back of the hole of the current collector and the inability to form through holes, etc.
Inactive Publication Date: 2019-07-12
SOUNDON NEW ENERGY TECH CO LTD
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Problems solved by technology
However, the current punching method uses the impact head to directly punch the current collector to form holes, which is likely to cause the problem of burrs on the back of the hole of the current collector, and it is impossible to form a through hole without burrs on both sides around the aperture.
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[0023] In order to facilitate the understanding of the present invention, the following will describe the present invention more fully and give preferred embodiments of the present invention. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0024] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical...
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Abstract
The invention relates to a pore forming device, microporous current collector foil and a preparation method of the microporous current collector foil. The pore forming device comprises a first rollergroup, wherein the first roller group comprises a first roller and a second roller; the first roller is provided with a first convex column; the end face of the first convex column is provided with aconvex part; the convex part is spaced from the edge of the first convex column, so that a first pressing part is formed between the edge of the first convex column and the convex part; the second roller is opposite to the first roller; the second roller is provided with a second convex column; the end face of the second convex column is provided with a concave part capable of accommodating the convex part; a second pressing part is formed between the upper edge of the concave part and the edge of the second convex column; and the second pressing part and the first pressing are in press fit with each other. By means of the pore forming device, various current collector foils such as aluminum foil, copper foil and other workpieces needing to be punched can be punched; and a through hole formed by the pore forming device is with no burrs at two sides around the aperture of the through hole, and the punching is smoother.
Description
technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a pore-forming device, a microporous current collector foil and a preparation method thereof. Background technique [0002] The pore-forming device is a device for forming holes, and it is widely used, and it is also widely used in the technical field of the battery field to prepare microporous current collectors. Existing drilling methods for microporous current collectors include chemical corrosion drilling, current corrosion drilling, laser drilling, and machining drilling. Among them, the drilling efficiency of chemical corrosion drilling and electric current corrosion drilling is slow, the control of hole formation is difficult, and it is difficult to recover the hole formation area by the corrosion collector. The cost of laser drilling is prohibitive. The mechanical drilling method has the advantages of fast drilling efficiency, stable hole forming control, a...
Claims
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IPC IPC(8): B26F1/16H01M4/80
CPCB26F1/16H01M4/80Y02E60/10
Inventor 赵洋陈小平梁凯
Owner SOUNDON NEW ENERGY TECH CO LTD