Method and apparatus for manufacturing collector of secondary cell

专利摘要:
PURPOSE: A method for preparing a current collector for a secondary battery and its apparatus are provided, to allow the both sides of a current collector to be etched simultaneously. CONSTITUTION: The method comprises the steps of coating the first side of a material(34) with a resist ink with inserting the projection(32) formed on the outer circumference of a pattern roller(31) into the hole(35) formed on the rim of a current collector material; drying the resist ink; coating the second side of the material(34) with a resist ink with inserting the projection(32) formed on the outer circumference of a pattern roller(31) into the hole(34) formed on the rim of a current collector material; drying the resist ink of the second side; etching the both sides simultaneously; and dissolving the resist ink coated on the both sides of the material.
公开号:KR20020024652A
申请号:KR1020000056416
申请日:2000-09-26
公开日:2002-04-01
发明作者:안태용；이동훈；김용남
申请人:이중구；삼성테크윈 주식회사；
IPC主号:

专利说明:

Method and apparatus for manufacturing a current collector of a secondary battery {Method and apparatus for manufacturing collector of secondary cell}
[13] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collector manufacturing method and apparatus for a secondary battery, and more particularly, to a current collector manufacturing method and apparatus for secondary batteries capable of simultaneously etching both surfaces of the current collector.
[14] In general, a secondary battery is a rechargeable battery, and is formed by stacking a positive electrode plate, a negative electrode plate, and separators that electrically insulate the electrode plates. The pole plate assembly is embedded in the case together with a solid or liquid electrolyte and may be connected to an external circuit through a tab connected to each pole plate.
[15] The positive electrode plate and the negative electrode plate are made of a current collector and an active material. As the current collector, a thin metal material is used, and a negative electrode active material or a positive electrode active material is coated on the metal material. Examples of the metal used as the current collector for the electrode plate include aluminum, copper, stainless steel, nickel, and the like, which form the electrode plate assembly in the state of a thin foil. The current collector forms a plurality of holes by punching or etching to keep the active material as much as possible on its surface.
[16] Figure 1 schematically shows the application step of the resist ink for etching the current collector material.
[17] Referring to the drawings, the material 11 is provided in a state of being wound on a spool (not shown) and released in an in-line manner to apply resist ink on the surface. In order to apply resist ink to the surface of the raw material 11, the pattern roller 12 is in contact with one surface, and the front printing roller 13 is in contact with the other surface. The pattern roller 12 has, for example, an intaglio or embossed pattern formed on a surface thereof, and has a function of applying a resist ink filled in the first resist ink tank 15 to a surface of the material 11 in a predetermined pattern. . That is, an intaglio or embossed pattern formed on the surface of the pattern roller 12 receives the resist ink from the tank 15 and applies it to the surface of the material 11. On the other hand, the front surface printing roller 13 is in contact with the other side of the material 11, and the resist ink of the second resist ink tank 16 supplied through the intermediate roller 14 is spread over the entire surface of the material 11. Application.
[18] 2 is an explanatory diagram schematically showing a step of etching a material.
[19] Referring to the drawings, a resist 21 having a predetermined pattern is applied to one surface of the material 11 and exists in a dry state, while a resist 22 is applied to the other surface of the material 11 over the entire surface to dry it. It can be seen that the state exists. The etching liquid 24 is applied by the etching nozzle 23, at which time the surface of the material 11 which is not protected by the resist 21 of the predetermined pattern is corroded by etching. By etching the entire thickness of the material 11, the etchant can produce a current collector having a hole having a predetermined pattern.
[20] As described above, a resist of a predetermined pattern is applied to one surface of the current collector material 11, and a resist is applied to the other surface over the entire surface because it is impossible to form a mutually coincident pattern on both surfaces. to be. That is, as shown in FIG. 2, the etching solution 24 is applied only to one surface of the material until it penetrates the thickness of the material, and at this time, the front printing roller 13 to prevent corrosion from occurring on the other side of the material. Is required to apply the entire surface of the resist ink. However, the one-side etching method of such a material has the disadvantage that the etched surface is often poor, and the etching time is also long.
[21] The present invention has been made to solve the above problems, and an object of the present invention is to provide an improved current collector manufacturing method of a secondary battery.
[22] Another object of the present invention is to provide a current collector manufacturing apparatus of a secondary battery.
[1] 1 is an explanatory diagram showing a conventional resist ink coating method for a current collector material.
[2] 2 is an explanatory diagram showing a typical cross-sectional etching method for the current collector material.
[3] Figure 3 is a schematic perspective view of the current collector and the pattern roller according to the present invention.
[4] 4 is an explanatory diagram showing a resist ink coating method of a current collector according to the present invention;
[5] 5 is an explanatory view showing a double-sided etching method of the current collector according to the present invention.
[6] 6 is a flowchart illustrating a method of manufacturing a current collector according to the present invention.
[7] 7 is an explanatory view showing a resist ink coating method of a current collector according to another embodiment of the present invention.
[8] <Description of the symbols for the main parts of the drawings>
[9] 11. Material 12. Pattern roller
[10] 13. Front printing roller 14. Parameters of roller
[11] 15. Resist Ink Tank 31. Pattern Roller
[12] 32. Protrusion 35. Through Hole
[23] In order to achieve the above object, according to the present invention, the step of applying a resist ink in a predetermined pattern on the first surface while inserting the projection formed on the outer peripheral surface of the pattern roller in the through hole formed on the edge of the current collector material; Drying the resist ink of the first side; Applying a resist pattern in a predetermined pattern to the second surface so as to coincide with the applied resist ink on the first surface while inserting the projection formed on the outer circumferential surface of the pattern roller into the through hole formed at the edge of the material; Drying the resist ink of the second side; Simultaneously etching both sides of the material; And dissolving the resist inks applied to both surfaces of the material. There is provided a current collector manufacturing method of a secondary battery.
[24] Further, according to the present invention, the resist ink is interposed between the first and second surfaces of the material while inserting the protrusions formed on the outer circumferential surfaces of the first and second pattern rollers provided to correspond to each other into the through holes formed at the edges of the current collector material. Applying in a predetermined predetermined pattern; Drying the resist ink of the first side and the second side; Simultaneously etching both sides of the material; And dissolving the resist inks applied to both surfaces of the material. There is provided a current collector manufacturing method of a secondary battery.
[25] In addition, according to the present invention, a plurality of protrusions corresponding to the through hole formed on the edge of the current collector material of the secondary battery is formed on the outer peripheral surface, so that the resist ink can be applied to a surface of the current collector material in a predetermined pattern Patterned rollers with intaglio or embossing; And a pressure roller capable of pressing and passing the current collector material therebetween in correspondence with the pattern roller.
[26] In addition, according to the present invention, a plurality of protrusions corresponding to the through hole formed on the edge of the secondary battery current collector material is formed on the outer peripheral surface, the intaglio so that the resist ink can be applied to the first surface of the current collector material in a predetermined pattern Or an embossed first pattern roller; And a second pattern roller having an intaglio or an embossed surface formed so as to correspond to the first pattern roller so that a resist ink pattern coinciding with the resist ink pattern of the first surface can be applied to the second surface of the current collector material. There is provided a current collector manufacturing apparatus for a secondary battery having an.
[27] According to one feature of the invention, the projection of the first pattern roller and the projection of the second pattern roller is formed with a predetermined interval so that it can be alternately inserted into the through-hole formed in the material.
[28] Hereinafter, the present invention will be described in more detail with reference to an embodiment shown in the accompanying drawings.
[29] 3 is a perspective view schematically showing a pattern roller and a material used in the current collector manufacturing method of a secondary battery according to the present invention.
[30] Referring to the drawings, projections 32 are formed on the circumference of the pattern roller 21 for applying resist ink of a predetermined pattern on the surface of the raw material 34. These protrusions 32 are developed along both sides of the pattern forming portion 33 of the pattern roller 21, as shown in the figure. The pattern forming portion 33 is formed with an intaglio or embossed pattern, for example, and can transfer resist ink to a surface of a material in a predetermined pattern.
[31] Corresponding to the projection 32 of the pattern roller 21, the through hole 35 through which the projection 32 can be inserted is formed at the edge of the material 34. The material 34 is provided while being wound on a spool (not shown) to be released, and the position of the pattern is formed on the surface of the material 34 by the mutual correspondence of the projection 32 and the through hole 35 can be controlled. Will be.
[32] 4 is an explanatory diagram schematically showing a method of manufacturing a current collector according to the present invention.
[33] Referring to the figure, the workpiece 34 is unwound from the spool (not shown) and wound onto another empty spool (not shown), whereby the application of resist ink is applied to the surface while the workpiece 34 is released. The projection 32 is inserted into the through hole 35 formed in the raw material 34 to allow relative position control of the pattern on the pattern roller 12 and the raw material 11 during the transfer of the raw material 34. The pressure roller 36 only serves to press and support the material 34 against the surface of the pattern roller 31. The pattern roller 12 receives the resist ink from the resist ink tank 37 to apply the resist ink of a predetermined pattern to one surface of the material 34, and then applies the resist of the same pattern to the other surface of the material 34. Ink is applied. In order to apply the same pattern mutually coincident with both surfaces of the material, the material 34 is supplied in an inverted state when the resist ink is applied to the other surface or the position of the pattern roller 12 is changed. In this way, even when the raw material 34 is supplied in an inverted state or the position of the pattern roller 12 is changed, the pattern of the resist ink coating formed on both surfaces of the raw material by matching the projections 32 and the through holes 35 can be obtained. Can match each other.
[34] 5 is an explanatory diagram showing etching of both surfaces of a material according to the present invention.
[35] Referring to the drawings, resist ink coating portions 51 are formed on both surfaces of the raw material 34. The resist ink application portions 51 coincide with each other on both sides. When the etching solution 55 is applied by the etching nozzle 52, the surfaces of the material 34 are applied together. Corrosion does not occur in the portion where the surface of the material is protected by the resist ink application portion 51, and corrosion occurs simultaneously on both sides in the portion where the resist ink application portion 51 is not formed. The etching time is thus shortened in half, resulting in good quality of the etched cross section.
[36] 6 shows a schematic flowchart of a method of performing a double-sided etching in accordance with the present invention.
[37] Referring to the drawing, the material is first released from the spool to clean the surface (step 61), and after the cleaning is finished, the resist ink is applied to the first surface in a predetermined pattern as shown in FIG. (Step 62) Next, the applied resist ink is dried (step 63). The resist ink is then applied to the second side of the material again to match the pattern of the first side (step 64), of course, where the pattern of resist ink coinciding with the first and second side is applied. 3 and the projection of the pattern roller 31 demonstrated through FIG. 4, and the through-hole 35 of the raw material 34. FIG. When drying on the second side is finished (step 65), both surfaces are simultaneously etched (step 66) as shown in FIG. Next, the resist ink is dissolved to remove it from the surface of the raw material (step 67), and post-treatment is performed (step 68). The post-treatment is, for example, an anti-oxidation treatment when the material is copper, and then the current collector manufacturing process is terminated (step 69).
[38] 7 is a schematic explanatory diagram showing another embodiment of the present invention.
[39] Referring to the drawings, the raw material 79 passes between the first and second pattern rollers 71 and 72, and the first and second pattern rollers 71 and 72 are formed on the raw material 79. Protrusions 73 and 74 that can be inserted into a through hole (not shown) are formed, respectively. The first and second pattern rollers 71 and 72 transfer resist ink from the resist ink tanks 77 and 78 through respective intermediate rollers 75 and 76 to mutually be formed on both surfaces of the material 79. It is possible to form a predetermined pattern that matches. That is, while the pattern rollers 71 and 72 are pressed against both surfaces of the raw material 79, the projections 73 and 74 can be inserted into the through holes formed at the edge of the raw material 79 to control the printing of the pattern. . At this time, since two projections cannot enter at the same time through one hole, by adjusting the formation interval of the through hole and the projection, each projection can be inserted into the through hole of the material alternately. After a predetermined pattern is formed on both surfaces with the apparatus shown in FIG. 7, the current collector may be manufactured by etching both sides of the material as shown in FIG. 5.
[40] The method and apparatus for manufacturing a current collector of a secondary battery according to the present invention can enable double-sided etching by printing a resist ink of a predetermined pattern mutually matching on both surfaces of a material, and thus etching can be made with excellent quality. And, there is an advantage that the etching time can be significantly shortened.
[41] Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Could be. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

权利要求:
Claims (5)
[1" claim-type="Currently amended] Applying resist ink in a predetermined pattern to the first surface while inserting the protrusions formed on the outer circumferential surface of the pattern roller into the through holes formed at the edges of the current collector material;
Drying the resist ink of the first side;
Applying a resist pattern in a predetermined pattern to the second surface so as to coincide with the applied resist ink on the first surface while inserting the projection formed on the outer circumferential surface of the pattern roller into the through hole formed at the edge of the material;
Drying the resist ink of the second side;
Simultaneously etching both sides of the material; And,
Dissolving the resist inks applied to both surfaces of the material; a current collector manufacturing method of a secondary battery comprising a.
[2" claim-type="Currently amended] The resist ink is applied to the first and second surfaces of the material in a predetermined pattern to coincide with each other while inserting the protrusions formed on the outer circumferential surfaces of the first and second pattern rollers installed to correspond to each other into the through holes formed at the edges of the current collector material. Doing;
Drying the resist ink of the first side and the second side;
Simultaneously etching both sides of the material; And,
Dissolving the resist inks applied to both surfaces of the material; a current collector manufacturing method of a secondary battery comprising a.
[3" claim-type="Currently amended] A plurality of protrusions corresponding to the through hole formed at the edge of the current collector material of the secondary battery is formed on the outer peripheral surface, the pattern formed with an intaglio or embossed to apply a resist ink in a predetermined pattern on any surface of the current collector material roller; And,
And a pressure roller capable of pressing and passing the current collector material therebetween in correspondence to the pattern roller.
[4" claim-type="Currently amended] A plurality of protrusions corresponding to the through hole formed at the edge of the secondary battery current collector material is formed on the outer circumferential surface, the first indent or embossed to be applied to the first surface of the current collector material in a predetermined pattern Pattern rollers; And,
A second pattern roller provided with an intaglio or embossment to be applied to the first pattern roller to apply a resist ink pattern that coincides with the resist ink pattern of the first surface on a second surface of the current collector material; The current collector manufacturing apparatus of a secondary battery provided.
[5" claim-type="Currently amended] The current collector manufacturing apparatus of claim 4, wherein the protrusions of the first pattern roller and the protrusions of the second pattern roller are formed at predetermined intervals so as to be alternately inserted into the through holes formed in the material. .

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同族专利:

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公开号 | 公开日

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2000-09-26|Application filed by 이중구, 삼성테크윈 주식회사

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2000-09-26|Priority to KR1020000056416A

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2000-09-26|Priority claimed from KR1020000056416A

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2002-04-01|Publication of KR20020024652A

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2002-09-27|Application granted

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2002-09-27|Publication of KR100354113B1

优先权:

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申请号 | 申请日 | 专利标题

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KR1020000056416A|KR100354113B1|2000-09-26|Method and apparatus for manufacturing collector of secondary cell|