Rewinding Corona Equipment

Abstract

This invention discloses a rewinding corona treatment device, including a chassis, a winding mechanism, and a corona generator. The chassis is a sealed structure, filled with protective gas and equipped with an air inlet suitable for introducing protective gas. The winding mechanism includes an unwinding roller and a take-up roller, which are arranged opposite to each other within the chassis. The corona generator is located between the unwinding roller and the take-up roller and is used to perform corona treatment on the processed product. This invention rewinds aluminum foil rolls on a rewinding machine, with the aluminum foil as the positive electrode, and corona discharge is applied to the negative electrode through a semiconductor material. This invention enables the production of battery aluminum foil with a surface oxide layer, meeting the wetting tension requirements of batteries for polar material aluminum foil, and improving the coating quality. The aluminum foil manufactured by this equipment has advantages such as good conductivity and high conductivity, thus improving the overall battery quality. Furthermore, it improves the quality of aluminum foil flexible packaging films, aluminum foil and plastic film composites, and enhances the uniformity and conductivity of copper plating on aluminum foil.

Description

Technical Field

[0001] This invention relates to the field of aluminum foil production and processing equipment technology, and in particular to a rewinding corona treatment device. Background Technology

[0002] Currently, aluminum foil used as conductive polar material for high-performance rechargeable batteries requires increased surface wetting tension (unit: dynes) when coated with polar materials (such as artificial graphite, natural graphite, calcined coke, lithium manganese oxide, lithium iron phosphate, lithium cobalt oxide, sodium ion, lithium titanate, etc.). The aluminum foil surface is treated with conventional corona equipment to form a wetting tension adhesion surface with a wetting tension value of 34 dynes or higher, which increases its surface roughness.

[0003] However, aluminum foil produced using conventional corona treatment equipment generates an aluminum oxide (Al2O3) layer during the corona treatment process. This Al2O3 layer increases the surface resistance of the aluminum foil and reduces its conductivity. After the final product is manufactured, the oxide layer continues to oxidize the aluminum foil, thus affecting battery quality. Furthermore, the production process of aluminum foil in a conventional corona machine ionizes oxygen in the air, producing ozone (O3), which is harmful to human health. Summary of the Invention

[0004] The main objective of this invention is to provide a rewinding corona treatment device, which aims to produce battery aluminum foil without an oxide layer on the surface, so as to avoid aluminum oxide (Al2O3) increasing the surface resistance of the aluminum foil and reducing its conductivity, and to avoid the generation of ozone (O3), thereby reducing the harm to human health.

[0005] To achieve the above objectives, the present invention provides a rewinding corona device, comprising: The chassis is a sealed structure, the chassis is filled with protective gas and has an air inlet, the air inlet being adapted to allow the protective gas to enter; The winding mechanism includes an unwinding roller and a take-up roller, which are disposed opposite to each other within the machine housing; and A corona treatment machine is located between the unwinding roller and the take-up roller and is used to perform corona treatment on the products to be processed.

[0006] Optionally, the protective gas is nitrogen or an inert gas.

[0007] Optionally, the corona machine is equipped with a corona roller made of semiconductor material.

[0008] Optionally, the semiconductor material is silicone, ceramic, or silicon glass.

[0009] Optionally, the rewinding corona equipment further includes a fan, which is mounted on the chassis and used to remove impurities generated during the corona process.

[0010] Optionally, the fan is a negative pressure fan.

[0011] Optionally, the winding mechanism further includes at least one guide roller disposed between the unwinding roller and the take-up roller to guide the product to be processed to be unwound to the corona position of the corona machine.

[0012] Optionally, the winding mechanism further includes a tension roller, which is disposed between the unwinding roller and the take-up roller to adjust the tension of the product to be processed.

[0013] Optionally, the take-up roller is mounted inside the machine housing via a rotating arm, which is rotatably mounted inside the machine housing. The rotating arm is used to change the position of the take-up roller to adjust the tension of the product to be processed.

[0014] Optionally, the machine housing is provided with a mounting base, and the winding mechanism is mounted on the mounting base.

[0015] In the technical solution of this invention, the rewinding corona treatment equipment includes a housing, a winding mechanism, and a corona generator. The housing is a sealed structure, filled with protective gas and equipped with an air inlet suitable for introducing protective gas. The winding mechanism includes an unwinding roller and a take-up roller, which are arranged opposite to each other within the housing. The corona generator is located between the unwinding roller and the take-up roller and is used to perform corona treatment on the product to be processed.

[0016] Because the rewinding corona equipment is filled with a protective gas to isolate oxygen, no aluminum oxide (Al2O3) is generated during the corona process. This enables the production of battery aluminum foil with no oxide layer on the surface, avoiding the increase in surface resistance and reduced conductivity caused by aluminum oxide (Al2O3), and also avoiding the generation of ozone (O3), thus reducing environmental pollution and preventing harm to human health. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the rewinding corona device of the present invention; Figure 2 This is a schematic diagram of another embodiment of the rewinding corona device of the present invention.

[0019] Explanation of icon numbers: 10. Machine casing; 21. Unwinding roller; 22. Rewinding roller; 30. Corona generator; 100. Product to be processed; 23. Guide roller; 40. Rotating arm; 50. Mounting base.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] This invention proposes a rewinding corona treatment device, which is suitable for corona treatment of roll materials such as aluminum foil that need to avoid oxide generation, but is not limited thereto.

[0025] Reference Figure 1 and Figure 2In some embodiments of the present invention, the rewinding corona treatment device includes a housing 10, a winding mechanism, and a corona generator 30. The housing 10 is a sealed structure, filled with protective gas and equipped with an air inlet suitable for introducing protective gas. The winding mechanism includes an unwinding roller 21 and a take-up roller 22, which are arranged opposite to each other within the housing 10. The corona generator 30 is located between the unwinding roller 21 and the take-up roller 22 and is used to perform corona treatment on the product 100 to be processed.

[0026] In this embodiment, the chassis 10 can be connected to an external gas supply device via a gas pipe to maintain positive pressure inside the chassis 10. The protective gas can be nitrogen, or an inert gas such as helium, neon, argon, krypton, or xenon; there are no limitations here.

[0027] In this embodiment, the product to be processed 100 can be a roll of aluminum foil or the like. The winding mechanism is used to unwind the roll of aluminum foil or the like at a uniform speed to the corona position and then wind up the corona-treated aluminum foil.

[0028] The corona machine 30 is equipped with a corona roller, which is made of semiconductor material, such as silicone, ceramic or silicon glass, to form the negative electrode, while the aluminum foil to be corona treated forms the positive electrode.

[0029] Main production process: Aluminum foil rolls are rewound on a winding mechanism, with aluminum foil as the positive electrode, and corona discharge is applied to the negative electrode through semiconductor materials (silicone, ceramic, silicon glass, etc.).

[0030] For ease of installation, in this embodiment, the housing 10 may be provided with a mounting base 50, and the winding mechanism is mounted on the mounting base 50.

[0031] Understandably, because the casing 10 of the rewinding corona equipment is filled with protective gas and oxygen is isolated, aluminum oxide (Al2O3) will not be generated during the corona process. This enables the production of battery aluminum foil with no oxide layer on the surface, avoids the increase in surface resistance of aluminum foil and the reduction in conductivity caused by aluminum oxide (Al2O3), and avoids the generation of ozone (O3), thus reducing environmental pollution and avoiding harm to human health.

[0032] In addition, since the chassis 10 of the rewinding corona equipment is a closed structure, the aluminum foil is produced in a closed space, and the machine can shield electromagnetic waves, which can effectively solve the problem of electromagnetic interference with the normal operation of other electrical appliances during the production process.

[0033] During the corona treatment process, a significant amount of impurities such as oil film molecules, aluminum shavings, and dust are generated and remain on the surface of the aluminum foil. To address this, the present invention makes a further improvement: the rewinding corona equipment also includes a fan, which is mounted on the housing 10 and used to remove the impurities generated during the corona treatment process. This allows the oil film molecules, aluminum shavings, and dust on the surface of the aluminum foil to be peeled off and removed, further improving the wetting tension of the aluminum foil.

[0034] In this embodiment, the fan can be a negative pressure fan or the like, and there is no limitation here.

[0035] To improve product quality, in one embodiment, the winding mechanism further includes at least one guide roller 23 and a tension roller. The guide roller 23 is disposed between the unwinding roller 21 and the take-up roller 22 to guide the product 100 to be unwound to the corona position of the corona machine 30. The tension roller is disposed between the unwinding roller 21 and the take-up roller 22 to adjust the tension of the product 100.

[0036] Of course, in some other embodiments, the take-up roller 22 can be disposed in the housing 10 by means of a rotating arm 40. The rotating arm 40 is rotatably disposed in the housing 10 and is used to change the position of the take-up roller 22 to adjust the tension of the product 100 to be processed, thereby making the wetting tension of the aluminum foil adhesion surface more uniform and thus improving the product quality.

[0037] Compared with existing technologies, the rewinding corona electrode device of this invention has higher efficiency in producing corona-electrode aluminum foil and is safer for human use. Furthermore, the corona-electrode aluminum foil exhibits better adhesion, longer shelf life, higher conductivity, and improves the overall quality of the battery.

[0038] This invention can meet the wetting tension requirements of batteries for polar material aluminum foil, improve the quality of coating, improve the quality of aluminum foil flexible packaging film, aluminum foil and plastic film composite, and improve the uniformity and conductivity of copper plating on aluminum foil.

[0039] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A rewinding corona apparatus characterized by, include: The chassis is a sealed structure, the chassis is filled with a protective gas and has an air inlet, the air inlet is adapted to allow the protective gas to enter, and the protective gas is nitrogen or an inert gas; The winding mechanism includes an unwinding roller and a take-up roller, which are arranged opposite to each other inside the machine housing; as well as A corona treatment machine is disposed between the unwinding roller and the take-up roller and is used to corona treat the aluminum foil passing through it. The corona treatment machine is equipped with a corona roller made of a semiconductor material, such as silicone, ceramic or silicon glass, to form a negative electrode, and the aluminum foil to form a positive electrode.

2. The rewinding corona apparatus of claim 1 wherein, The rewinding corona equipment also includes a fan, which is installed on the chassis and used to remove impurities generated during the corona process.

3. The rewinding corona device as described in claim 2, characterized in that, The fan is a negative pressure fan.

4. The rewinding corona treatment device as described in claim 1, characterized in that, The winding mechanism further includes at least one guide roller, which is disposed between the unwinding roller and the take-up roller to guide the product to be processed to be unwound to the corona position of the corona machine.

5. The rewinding corona device as described in claim 4, characterized in that, The winding mechanism also includes a tension roller, which is located between the unwinding roller and the take-up roller to adjust the tension of the product to be processed.

6. The rewinding corona device as described in claim 4, characterized in that, The take-up roller is mounted inside the machine housing via a rotating arm. The rotating arm is rotatably mounted inside the machine housing and is used to change the position of the take-up roller to adjust the tension of the product to be processed.

7. The rewinding corona treatment device as described in claim 6, characterized in that, The machine housing is equipped with a mounting base, and the winding mechanism is mounted on the mounting base.

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