KR20080061218A - Electroforming apparatus and method thereof metal current collector plate for secondary battery - Google Patents

Abstract

An apparatus and a method for electroforming an anode current collector for secondary batteries using a continuous electroforming process are provided to integrally form a housing part and a supporting part, manufacture the anode current collector continuously, delay the separation of an active material from the anode current collector, adhere dissolved cations from a metal cluster to a surface of the cathode drum, and remove hydrogen gas generated from the cathode drum. An electroforming apparatus of an anode current collector for secondary batteries using a continuous electroforming process comprises: an auxiliary tank(120) for containing an electrolyte; an electrolyzer(100) on which a semi-cylindrical part is formed to contain the electrolyte of the auxiliary tank in such a shape that a central portion of a bottom face of the semi-cylindrical part is perforated, and which has an electrolyte spray channel(260) integrally formed on the central portion of the semi-cylindrical part to agitate the electrolyte by spraying the electrolyte through the electrolyte spray channel; an anode basket(300) which is installed such that the anode basket is fully dipped into the electrolyte along a curved surface of the semi-cylindrical part of the electrolyzer, and in which a metal cluster(320) having the same components as the electrolyte of the electrolyzer is contained; a mesh type cathode drum which is installed in a cylindrical shape such that the cathode drum maintains a predetermined distance from the anode basket and is partially dipped into the electrolyte of the electrolyzer, which is rotated about a rotary shaft(220) by an applied power supply, and which has a housing part formed on a cylindrical outer peripheral surface thereof to house an anode current collector(10); a plurality of guide rollers(400) for supporting and guiding the anode current collector to coil the anode current collector on a coiling roller(600) continuously; and a rinsing tank(500) installed in the middle of the guide rollers to rinse a surface of the anode current collector.

Description

Electroplating apparatus and method for secondary battery negative electrode current collector plate using continuous pole method {Electroforming apparatus and method

Figure 1 is a longitudinal sectional view schematically showing the configuration of a negative electrode current collector plate manufactured by the prior art

Figure 2 is a longitudinal cross-sectional view showing the configuration of a negative electrode current collector plate prepared according to the electroplating method according to the present invention

3 is a schematic configuration diagram of an electroplating apparatus for a secondary battery negative electrode collector plate using the continuous electrode method according to the first embodiment of the present invention;

4 is a schematic configuration diagram of an electroplating apparatus of a secondary battery negative electrode collector plate using the continuous electrode method according to the second embodiment of the present invention;

Figure 5 is a perspective view showing the appearance of the mesh type cathode drum used in the present invention

6A and 6B are flowcharts illustrating a method of electroplating a secondary battery negative electrode current collector plate using the continuous electrode method according to the first and second embodiments of the present invention.

7A and 7B are bottom and top views showing an enlarged view of an accommodating part forming step constituting the main part in the manufacturing method according to the present invention with an electron microscope;

FIG. 7C is a longitudinal cross-sectional view of the II ′ part of FIG. 7B; FIG.

8A and 8B are bottom and top views showing an enlarged view of the supporting part forming step constituting the main part in the manufacturing method according to the present invention with an electron microscope;

FIG. 8C is a longitudinal cross-sectional view of II-II 'part of FIG. 8B

[Description of Code for Major Parts of Drawing]

10. Cathode current collector 12. Accommodating part

14. Receiving space 16. Supporting part

100. Electrolyzer 110 '. First electrolytic tank

110 ". Second electrolyte tank 120. Auxiliary tank

200. Mesh type cathode drum 200 '. Mirror Cathode Drum

220. Rotating shaft 240. Cylindrical drum

260. Electrolyte injection path 300. Anode basket

320. Metal cluster 400. Guide roller

500. Cleaning tank 600. Winding roller

S10. Electrolyte Stirring Step S20. Drum rotation stage

S30. Current collecting plate forming step S30 '. Receiving part formation stage

S30 ". Support Formation Step S32. Receptacle Formation Process

S34. Support Formation Process S40. Current Plate Peeling Step

S50. Collector plate washing step S60. Current winding stage

The present invention relates to an electroplating apparatus for a secondary battery negative electrode current collector plate using a continuous pole method, and a method thereof. In particular, a negative electrode collection of a secondary battery using any one of metals including nickel, lithium, and copper using the continuous pole method The present invention relates to an electroplating apparatus and a method for electroforming a secondary battery negative electrode collector plate using a continuous electroforming method capable of manufacturing an electric plate.

In general, the secondary battery refers to a battery that can be used continuously by the action of charging and discharging, the secondary battery is provided with a negative electrode collector plate and a positive electrode plate, and an insulating member interposed between the negative electrode collector plate and the positive electrode plate.

The negative electrode current collector plate is fixed in contact with an active material inside the secondary battery, and when the active material is not detached from the negative electrode current collector plate for a long time, the negative electrode current collector plate can maintain a constant conductivity. .

Therefore, many studies have been conducted to prevent desorption of the negative electrode current collector plate and the active material, and as a part of the research, Korean Patent Office Registration No. 10-0399779 discloses a current collector of a battery and a method of manufacturing the same.

Referring to FIG. 1, the configuration thereof is briefly described. After degreasing the steel substrate 3 and activating the surface of the steel substrate 3, the first coating layer 4 is formed on the upper surface of the steel substrate 3. ) And the second coating layer (5) is sequentially coated, and the resultant coated with the first coating layer (4) and the second coating layer (5) is dried and rolled to prepare a current collector (= negative electrode current collector plate) Done.

In this case, the first coating layer 4 and the second coating layer 5 is a material selected from nickel and nickel alloy is applied, the current density was carried out in the range of 5 to 10A / dm ² , 10 to 40A / dm ² , respectively. .

However, the current collector manufactured by the above method also generates a problem in that the active material is detached during hundreds of times of charging and discharging.

In addition, when the active material is detached from the current collector, since the electrode efficiency is rapidly reduced, the secondary battery may be in an unusable state and thus disposed of.

In addition, the current collector manufactured by the above method is completed through a number of processes, there is a problem that the manufacturing cost increases.

Accordingly, the present invention has been made to solve the above problems, and a first object of the present invention is to manufacture a negative electrode current collector plate of a secondary battery using any one of metals including nickel, lithium, and copper using a continuous pole method. The present invention provides a pole plating apparatus for a secondary battery negative electrode current collector using a continuous pole method and a method thereof.

In addition, a second object of the present invention is to form a support part (a space for shielding the receiving part) by adjusting the current density after forming a receiving part (a space in which the active material is accommodated) of a shape corresponding to the processed pattern on the outer surface of the cathode drum. It is therefore an object of the present invention to provide an electroplating apparatus for a secondary battery negative electrode current collector plate using a continuous electroforming method capable of integrally molding an accommodating part and a supporting part and a method thereof.

In addition, the third object of the present invention is to continuously manufacture the negative electrode current collector plate to improve the productivity, lower the manufacturing cost, the secondary battery negative electrode using the continuous electrode method to maximize the electrode efficiency by delaying the detachment of the active material from the negative electrode current collector plate The present invention provides an electroplating apparatus for a current collector and a method thereof.

In addition, the fourth object of the present invention by applying a positive (+) current to the anode basket and a negative (-) current to the cathode drum to move the positive ions dissolved in the metal cluster to the surface of the cathode drum The present invention provides a electroplating apparatus for a secondary battery negative electrode current collector plate and a method thereof using a continuous electroplating method in which plating is performed by adhesion.

In addition, the fifth object of the present invention is a secondary battery negative electrode collection using a continuous electrophoresis method that can remove the hydrogen (H ₂ ) gas generated in the cathode drum by injecting the electrolyte solution into the electrolytic cell through the electrolytic solution injection passage to stir the electrolyte solution The present invention provides a electroplating apparatus for electroplating and a method thereof.

In order to achieve the above object, the electroplating apparatus for a secondary battery negative electrode current collector plate using the continuous electroplating method according to the present invention includes an auxiliary tank 120 containing an electrolyte solution; An electrolyte spray flow path 260 integrally formed with a semi-cylindrical shape having a center lower surface perforated to receive the electrolyte solution of the auxiliary tank 120 and spraying the electrolyte solution so that the electrolyte is stirred at the central portion of the semi-cylindrical shape is integrally formed. An electrolytic cell 100; An anode basket (300) installed to be completely immersed in the electrolyte along the curved surface of the semi-cylindrical shape of the electrolytic cell (100) and accommodating a metal cluster (320) having the same composition as the electrolyte of the electrolytic cell (100); Maintain a constant distance from the anode basket 300 and is configured to have a cylindrical shape that rotates around the rotating shaft 220 by a power applied to be installed so that a portion is immersed in the electrolyte of the electrolytic cell 100 and the cylindrical Mesh-type negative electrode drum 200 is provided with the shape of the receiving portion of the negative electrode current collector plate 10 on the outer peripheral surface of the; A plurality of guide rollers 400 supporting and guiding the negative electrode current collector plate 10 so as to be continuously wound on the winding roller 600; And a cleaning tank 500 for cleaning the surface of the negative electrode current collector plate in the middle of the guide roller. The positive electrode current is applied to the positive electrode basket 300 and the mesh type negative electrode drum 200 is provided. ) And the positive ions dissolved from the metal clusters are plated by adhering to the surface of the mesh type cathode drum, and the electrolytic solution is introduced into the electrolytic cell through the electrolyte injection flow path. It is characterized in that for removing the hydrogen (H ₂ ) gas generated in the mesh-type cathode drum by stirring the electrolyte solution by spraying.

In addition, the electroplating apparatus of the secondary battery negative electrode current collector plate using the continuous electrode method according to the present invention for achieving the above object is a semi-perforated half of the bottom surface of the secondary tank to accommodate the electrolyte and the electrolyte of the auxiliary tank; An electrolytic cell having a cylindrical shape and integrally formed with an electrolyte injection flow path for injecting the electrolyte solution so that the electrolyte is agitated in the central portion of the semi-cylindrical shape, and completely immersed in the electrolyte along the curved surface of the semi-cylindrical shape of the electrolytic cell; It is installed by the positive electrode basket to accommodate the metal cluster of the same component as the electrolytic solution of the electrolytic cell in the inside, and to maintain a certain distance from the positive electrode basket and to be partially immersed in the electrolytic solution of the electrolytic cell Consists of a cylinder that rotates about the axis of rotation and the outer periphery of the cylinder A first pole of the first continuous device having a first drum a cathode provided with a receiving portion shape of the negative electrode current collector plate; An auxiliary tank accommodating the electrolyte and an electrolyte injection flow path for injecting the electrolyte solution to agitate the electrolyte solution in the central portion of the semi-cylindrical shape having a semi-cylindrical shape having a perforated bottom surface to accommodate the electrolyte solution of the auxiliary tank. An electrolytic cell formed of an electrolytic cell, a positive electrode basket installed so as to be completely immersed in the electrolyte along the curved surface of the semi-cylindrical shape of the electrolytic cell, and accommodating a metal cluster having the same component as the electrolytic solution of the electrolytic cell therein, and a constant distance from the positive electrode basket It is configured to maintain a portion of the electrolytic solution is immersed in the electrolytic solution is composed of a cylindrical to rotate around the axis of rotation by the applied power and is provided with a mirror surface to form a support portion of the negative electrode collector plate on the outer peripheral surface of the cylindrical A second continuous pole device having a second cathode drum; A plurality of first guide rollers for guiding the negative electrode current collector plate between the first continuous pole device and the second continuous pole device; A plurality of second guide rollers for supporting and guiding the negative electrode current collector plate from the first continuous pole device or the second continuous pole device so as to be continuously wound on a winding roller; And a cleaning tank for cleaning the surface of the negative electrode current collector plate in the middle of the second guide roller, wherein the positive electrode current is applied to the positive electrode basket and the negative electrode is applied to the first and second negative electrode drums. Positive (+) ions dissolved from the metal cluster by applying a negative current to the surface of the first and second cathode drums are adhered and plated, and the electrolyte is introduced into the electrolytic cell through the electrolyte spray passage. It is characterized in that for removing the hydrogen (H ₂ ) gas generated in the first and second cathode drum by spraying and stirring the electrolyte.

One of the first and second cathode drums is composed of a mesh-type cathode drum having a pattern formed on the outer circumferential surface, and the other is composed of a mirror-type cathode drum having no pattern formed on the outer circumferential surface.

The mesh type cathode drum is characterized in that the mesh (Mesh) pattern is integrally formed on the outer peripheral surface.

The mesh pattern is characterized in that consisting of a single metal or alloy.

The mesh type cathode drum is characterized in that the mesh is processed in a weaving type (Batch type) or batch type (Batch type) attached to the outer peripheral surface.

The mesh is characterized in that consisting of a single metal or alloy.

The anode basket is a drum accommodating portion formed in a shape corresponding to the shape of the mesh type cathode drum; A cluster accommodating part formed at one side of the drum accommodating part and accommodating a metal cluster having the same component as the electrolyte of the electrolytic cell; A separation prevention net formed on an outer side of the cluster accommodating part to prevent separation of the metal cluster; And a positive electrode power supply unit formed at both ends of the drum accommodating unit to supply positive power (+).

The electrolyte injection passage is in communication with the inside of the electrolytic cell, characterized in that consisting of a cylindrical plastic pipe.

The electroplating apparatus further comprises a circulation filtering means for removing foreign matter contained in the electrolyte while circulating the electrolyte in the auxiliary tank to the electrolytic cell.

The electroplating apparatus is characterized by manufacturing a negative electrode current collector plate of a secondary battery using any one of metals including nickel, lithium, copper.

In addition, the electroplating method of the secondary battery negative electrode collector plate using the continuous electrode method according to the present invention for achieving the above object, (a) an electrolytic solution stirring step of spraying and stirring the electrolyte into the electrolytic cell; (b) a drum rotating step of rotating the mesh type cathode drum; (c) Cathode (-) current is applied to the mesh type cathode drum and positive (+) current is applied to the anode basket so that the positive ions dissolved from the metal cluster move to the surface of the mesh type cathode drum and plated. A current collector plate forming step of forming a negative electrode current collector plate; (d) a current collector plate peeling step of separating the negative electrode current collector plate from the surface of the mesh type negative electrode drum to separate the negative electrode current collector plate from the mesh type negative electrode drum; (e) a collector plate washing step of washing the cathode collector plate separated from the mesh type cathode drum; And (f) a current collector plate winding step of winding the washed negative electrode current collector plate.

The current collector forming step of step (c) is characterized in that the current applied to the mesh cathode drum and the anode basket and the current application time are differently applied depending on the type of product and the size of the electroplating apparatus.

The current collector plate shape step may include: a receiving part forming step of forming a receiving part by plating nickel (Ni) on the pattern surface of the mesh type cathode drum; And a supporting part forming step in which an area of the accommodating part is gradually enlarged so that a supporting part is formed on the entire outer surface of the mesh type cathode drum.

In addition, the electroplating method of the secondary battery negative electrode collector plate using the continuous electrode method according to the present invention for achieving the above object, (a) an electrolytic solution stirring step of spraying and stirring the electrolyte into the electrolytic cell; (b) a drum rotating step of rotating the mesh type cathode drum having a pattern formed on the outer circumferential surface and the mirror type cathode drum having no pattern formed on the outer circumferential surface; (c) Cathode (-) current is applied to the mesh type cathode drum and positive (+) current is applied to the anode basket so that the positive ions dissolved from the metal cluster move to the surface of the mesh type cathode drum and plated. Thereby forming a first current collector plate; (d) Positive (+) ions dissolved from the metal cluster are transferred to the surface of the mirror type cathode drum by applying a negative current to the mirror type cathode drum and a positive current to the anode basket. A second collector plate forming step of forming a negative electrode collector plate; (e) a current collector plate peeling step of separating the negative electrode current collector plate by peeling the negative electrode current collector plate from a surface of the mesh type negative electrode drum or the mirror type negative electrode drum; (f) a collector plate washing step of washing the cathode collector plate separated from the mesh type cathode drum or the mirror type cathode drum; And (g) a current collector plate winding step of winding the washed negative electrode current collector plate.

The current density applied in the first current collector forming step is higher than the current density applied in the second current collecting plate forming step.

The electroplating method is characterized by producing a negative electrode current collector plate of a secondary battery using any one of metals including nickel, lithium, copper.

According to the present invention having such a configuration, the adhesion of the active material to the negative electrode current collector plate is increased, the conductivity is improved, the number of processes is reduced, there is an advantage that the productivity is improved.

In addition, positive (+) current is applied to the positive electrode basket and negative (-) current is applied to the negative electrode drum so that the positive ions dissolved from the metal cluster are moved and adhered to the surface of the negative electrode drum to be plated. In addition, it is possible to remove the hydrogen (H ₂ ) gas generated in the cathode drum by agitating the electrolyte solution by spraying the electrolyte solution into the electrolytic cell through the electrolyte injection passage.

Hereinafter, the configuration of the negative electrode current collector plate manufactured according to the above-described manufacturing method will be described with reference to the accompanying drawings. Figure 2 is a longitudinal cross-sectional view showing the configuration of the negative electrode current collector plate prepared according to the electroplating method according to the present invention.

As shown in the figure, the negative electrode current collector plate 10 has a thin plate shape including nickel (Ni), and is used while being cut in a predetermined length while being stored in a wound state on a roller. In addition, the upper surface of the negative electrode current collector plate 10 is provided with a receiving portion 12 protruding upward in the state spaced at equal intervals.

The accommodating part 12 is spaced apart from each other to form an accommodating space 14. The accommodating space 14 is accommodated with an active material to prevent detachment.

The support part 16 is provided below the accommodating part 12. The support part 16 is integrally formed with the accommodating part 12 to support the accommodating part 12. The support part 16 is continuously formed to form an inner bottom surface of the accommodating space 14, and at the same time, the cathode collector plate. The bottom surface of (10) forms an external appearance.

Therefore, when the support part 16 is integrally formed at the lower end of the accommodating part 12, the active material accommodated in the accommodating space 14 is restricted in a downward direction.

Hereinafter, a configuration of a continuous pole device for continuously manufacturing the negative electrode current collector plate 10 will be described with reference to FIGS. 3 to 5.

FIG. 3 is a schematic configuration diagram of an electroplating apparatus of a secondary battery negative electrode current collector plate using the continuous pole method according to the first embodiment of the present invention, and FIG. 4 is a continuous pole according to the second embodiment of the present invention. The schematic configuration diagram of the electroplating apparatus of the secondary battery negative electrode current collector plate using the method is shown, Figure 5 is a perspective view showing the appearance of the mesh-type negative electrode drum used in the present invention.

First, referring to FIG. 3 and FIG. 5, the configuration of the electroplating apparatus of the secondary battery negative electrode collector plate using the continuous electroplating method, the continuous electroplating apparatus is an electrolytic cell 100 for receiving the electrolyte (Ni) to be plated, and Part of the electrolyte in the electrolytic solution 100 is installed so as to be immersed in the mesh-type cathode drum 200 is rotated by an applied power source, and the mesh-type cathode drum is installed so as to be completely immersed in the electrolyte of the electrolytic cell 100 It is formed in a shape corresponding to the (200) and consists of a positive electrode basket 300 to maintain a constant distance.

The electrolytic cell 100 has a semi-cylindrical shape in which a lower surface of the electrolytic cell is perforated downward, and the electrolytic cell 100 accommodates an electrolytic solution to be plated on the surface of the mesh type cathode drum 200. In addition, an auxiliary tank 120 is formed in the lower portion of the electrolytic cell 100 to receive the electrolyte flowing from the electrolytic cell 100. The structure in which the electrolyte is accommodated is composed of a double of the electrolytic cell 100 and the auxiliary tank 120. .

Accordingly, a part of the rotating mesh type cathode drum 200, that is, about half, is immersed in the electrolytic cell 100, and the electrolyte is injected from the electrolytic solution spray passage 260 to be described below. The electrolyte is stirred, and the electrolyte flowing through the electrolytic cell 100 while being agitated by the electrolyte injection of the electrolyte injection passage 260 is configured to be accommodated in the auxiliary tank 120.

The electrolytic cell 100 is provided with a mesh type cathode drum 200 which is immersed about halfway in the electrolyte. The mesh type cathode drum 200 is connected to the cathode (-) of the power applied to the cylindrical drum 240 having a predetermined width while surrounding the rotating shaft 220 and the rotating shaft 220 to be rotatable Is formed.

Although not shown at one end of the rotating shaft 220 is provided with a power supply for supplying a negative (-) from the rectifier, the other end is coupled to the motor for providing a rotational force to rotate the cylindrical drum 240 .

Therefore, when power is applied to the motor to generate rotational power, the rotational power is transmitted to the rotational shaft 220 to rotate the mesh type cathode drum 200.

A pattern 242 having a shape to be manufactured is formed on the surface of the mesh type cathode drum 200 as shown in FIG. 5. The pattern 242 is formed in a net shape in which a plurality of hexagons are connected, and is configured in a honeycomb form.

The pattern 242 may be composed of a single metal or an alloy according to the component of the electrolyte to be plated, and integrally with the mesh type cathode drum 200 by directly processing the surface of the mesh type cathode drum 200. It may be used to form, or by weaving the metal wire as weaving, weaving (Weaving type) or batch (Batch type) may be used by attaching to the surface of the mesh type cathode drum 200.

An anode basket 300 formed of an insoluble anode (+) is installed under the mesh type cathode drum 200. The anode basket 300 is formed so as to be immersed in the electrolyte of the electrolytic cell 100 and formed in an arc shape cut in half so as to correspond to the mesh type cathode drum 200 to maintain a constant distance.

Inside the anode basket 300, a metal cluster 320 having the same component as the electrolyte of the electrolytic cell 100 is accommodated. The metal cluster 320 is enclosed and stored in a separation prevention net to prevent the inside of the positive electrode basket 300 from being separated into the electrolytic cell 100.

In addition, the metal cluster 320 is dissolved in the electrolytic solution of the electrolytic cell 100 in a metal mass of the same component as the electrolytic solution of the electrolytic cell 100 to determine the amount and concentration of the electrolytic solution plated on the surface of the mesh type cathode drum 200. It will play the role of matching.

Therefore, when a current is applied to the anode basket 300, the positive ions dissolved from the metal cluster 320 move to the surface of the mesh type cathode drum 200, that is, the outer surface of the pattern 242, to be bonded. By plating.

In the lower end of the electrolytic cell 100, more specifically, the lower center of the positive electrode basket 300, an electrolytic solution injection passage 260 is formed to inject an electrolytic solution so that the electrolytic solution of the electrolytic cell 100 is stirred. The electrolyte injection passage 260 is formed of a cylindrical plastic pipe having a long length and communicating with an inside of the electrolytic cell 100.

Therefore, when the electrolyte is injected into the electrolyzer 100 through the electrolyte separator 260 and supplied, the electrolytic solution in the electrolyzer 100 is agitated, and the hydrogen generated in the mesh type cathode drum 200 H ₂ ) gas can be removed smoothly.

Although not shown, the continuous pole apparatus further includes circulation-filtering means. The circulation-filtering means serves to remove foreign substances in the electrolyte while circulating the electrolyte in the auxiliary tank 120 to the electrolytic cell 100, and thus a detailed description thereof will be omitted.

In addition, a guide roller 400 for peeling the negative electrode current collector plate 10 plated on the outer circumferential surface of the mesh negative electrode drum 200 is provided on the upper right side of the mesh negative electrode drum 200. The cleaning tank 500 for cleaning the surface of the negative electrode current collector plate 10 is provided on the right side from the roller 400.

In addition, the winding roller 600 is provided in the spaced to the right from the cleaning tank (500). The winding roller 600 is configured to continuously wind and store the cleaned negative electrode collector plate 10 while passing through the cleaning tank 500.

In addition, the electroplating apparatus of the secondary battery negative electrode collector plate using the continuous electrode method according to the second embodiment of the present invention, as shown in Figure 4, to accommodate the auxiliary tank for receiving the electrolyte, and the electrolyte of the auxiliary tank An electrolytic cell having a semi-cylindrical shape with a central lower surface formed therein and having an electrolyte injection flow path for injecting an electrolyte solution so that the electrolyte is agitated at the central portion of the semi-cylindrical shape, and along the curved surface of the semi-cylindrical shape of the electrolytic bath; It is installed so as to be completely immersed in the electrolyte solution and the inner side of the positive electrode basket for receiving a metal cluster of the same component as the electrolyte of the electrolytic cell, and to maintain a certain distance from the positive electrode basket and to be partially immersed in the electrolyte of the electrolytic cell The cylinder is rotated about a rotation axis by a power applied to the Having an outer peripheral surface of the type provided with a receiving portion shape of the collector plate of claim 1, the cathode drum first continuous electric pole device; An auxiliary tank accommodating the electrolyte and an electrolyte injection flow path for injecting the electrolyte solution to agitate the electrolyte solution in the central portion of the semi-cylindrical shape having a semi-cylindrical shape having a perforated bottom surface to accommodate the electrolyte solution of the auxiliary tank. An electrolytic cell formed of an electrolytic cell, a positive electrode basket installed so as to be completely immersed in the electrolyte along the curved surface of the semi-cylindrical shape of the electrolytic cell, and accommodating a metal cluster having the same component as the electrolytic solution of the electrolytic cell therein, and a constant distance from the positive electrode basket And a mirror surface which is configured to be rotated about a rotation axis by a power source which is installed to be partially immersed in the electrolytic solution of the electrolytic cell, and the support surface of the negative electrode current collector plate is formed on the outer circumferential surface of the cylindrical type. A second continuous pole device having a second cathode drum provided thereon; A plurality of first guide rollers for guiding the negative electrode current collector plate between the first continuous pole device and the second continuous pole device; A plurality of second guide rollers for supporting and guiding the negative electrode current collector plate from the first continuous pole device or the second continuous pole device so as to be continuously wound on a winding roller; And a cleaning tank for cleaning the surface of the negative electrode current collector plate in the middle of the second guide roller.

In the electroplating apparatus according to the above configuration, positive ions dissolved from the metal cluster are applied by applying a positive (+) current to the positive electrode basket and applying a negative (-) current to the first and second negative electrode drums. The hydrogen is generated in the first and second cathode drums by plating by moving to the surfaces of the first and second cathode drums and adhering to each other, by spraying the electrolyte into the electrolytic cell through the electrolyte spray passage and stirring the electrolyte. H ₂ ) Remove gas.

The electroplating apparatus may be provided with a plurality of electrolytic baths 100, as shown in FIG. That is, a mesh type having a first electrolyzer 100 'and a second electrolyzer 100 " on the left and right sides of the continuous electrophoresis device, and a pattern 242 formed on an outer surface of the first electrolyzer 100'. A cathode drum 200 may be installed, and a mirror type cathode drum 200 ′ having no pattern formed on an outer surface thereof may be installed in the second electrolytic cell 100 ″.

In this case, in the mesh type cathode drum 200, the receiving part 12 having the perforated space 14 is made of a thin film, and in the mirror type cathode drum 200 ', one surface of the receiving part 12 is formed. The support 16 is formed. To this end, between the mesh type cathode drum 200 and the mirror type cathode drum 200 ′, a plurality of feed rollers 420 for guiding the receiving portion 12 to the right are provided.

Hereinafter, a method of manufacturing the negative electrode current collector plate using a continuous pole device will be described with reference to FIGS. 3 to 8C.

First, referring to the method of manufacturing using the continuous electric pole device configured as shown in FIG. 3, the electrolysis is performed by applying electricity to the electrolyte of the electrolytic cell 100 by an applied power source so that electrolysis occurs, The electrolytic solution stirring step (S10) of stirring the electrolytic solution by injecting the electrolytic solution into the electrolytic cell 100 by the injection passage 260 is performed.

Then, after the electrolytic solution stirring step S10 is performed, the drum rotating step S20 for rotating the mesh type cathode drum 200 installed in the electrolytic cell 100 is performed.

Then, nickel (Ni) included in the electrolyte is plated on the surface of the mesh type cathode drum 200 to form a current collector plate forming step (S30) to form a negative electrode current collector plate 10. The current collector forming step (S30) is a step of applying a current of 30 to 50 A / dm ² to the mesh type cathode drum 200 and the electrolytic cell 100 within 40 minutes. At this time, the current and the current application time applied to the mesh type cathode drum 200 and the electrolytic cell 100 in the current collector forming step (S30) may vary depending on the type of product and the size of the electroplating apparatus.

In more detail, the current collecting plate forming step (S30) is a receiving portion forming process (S32) to form a receiving portion 12 by plating nickel on the pattern surface of the mesh type cathode drum 200, and the receiving As the thickness of the part 12 becomes thicker, the area of the accommodating part 12 is gradually enlarged so that the support part forming process S34 in which the support part 16 is formed on the entire outer surface of the mesh type cathode drum 200 is performed. It is configured to include.

The receiving part forming process (S32) is a process for allowing nickel to be plated only on a portion where a pattern is formed on the outer circumferential surface of the mesh type cathode drum 200, as shown in FIG. 7C. When the thickness of the 12 is increased, nickel is also plated on the side surface of the accommodating part 12 so that the width of the accommodating part 12 is widened, thereby connecting the upper end portions of the accommodating parts 12 spaced apart from each other as shown in FIG. It becomes possible to form (support forming process (S34)).

When the receiving part forming process S32 and the supporting part forming process S34 are sequentially performed, the negative electrode current collector plate 10 is continuously formed on the outer surface of the mesh type negative electrode drum 200. Thereafter, the current collector plate peeling step S40 is performed such that the negative electrode current collector plate 10 is separated from the mesh type negative electrode drum 200.

The current collector plate peeling step (S40) is performed while the negative electrode current collector plate 10 attached to the outer surface of the mesh type negative electrode drum 200 is guided to the upper right side by the rotation of the guide roller 400.

After the current collector plate peeling step (S40), the current collector plate washing step (S50) of immersing the negative electrode current collector plate 10 separated from the mesh type negative electrode drum 200 into the cleaning tank 500 is washed. The negative electrode current collector plate 10 washed with the current collector plate washing step S50 is wound while being transferred to the winding roller 600, and the current collector plate winding step S60 is performed.

The surface shape of the negative electrode current collector plate 10 manufactured through the above steps is the same as in FIGS. 7A and 7B.

Meanwhile, a method of manufacturing the negative electrode current collector plate 10 by using the continuous pole device configured as shown in FIG. 4 will be described with reference to FIGS. 4 and 8.

First, electricity is supplied to the electrolyte solution of the first electrolyte tank 100 ′ and the second electrolyte tank 100 ″ by an applied power source so that electrolysis occurs, and the electrolytic solution flow path 260 is applied to the electrolyte. The electrolytic solution stirring step (S10) of stirring the electrolytic solution by spraying the electrolytic solution to the electrolytic bath (100 ', 100 ") is performed.

Then, after the electrolyte stirring step (S10) is in progress, the drum rotating step (S20) for rotating the mesh type cathode drum 200 and the mirror cathode cathode 200 'installed in the electrolytic bath (100', 100 ") Will be implemented.

Thereafter, a current is applied to the mesh type cathode drum 200 and the first electrolytic bath 100 ′ so that nickel is plated only on the pattern 242 to form the accommodating part 12. ')

The receiving part 12 formed on the surface of the mesh type cathode drum 200 through the receiving part forming step (S30 ') is forced to be transferred by the feed roller 420, and inside the second electrolytic bath 100 ". As it is introduced into the lower outer peripheral surface of the mirror type cathode drum 200 '.

At this time, a current is applied to the mirror type cathode drum 200 'and the second electrolytic bath 100 ", and the applied current density is the mesh type cathode drum 200 and the second electrode in the receiving portion forming step S30'. It is lower than the current density applied to the one electrolytic bath 100 '. Therefore, the nickel contained in the electrolyte is plated on the upper surface of the receiving portion 12 (as shown in Fig. 8c) and has a large area so that the support portion 16 ) Is formed (support forming step (S30 ")).

When the support part 16 is integrated on the upper surface of the receiving part 12 to form the negative electrode current collector plate 10, the negative electrode current collector plate 10 is guided by a guide roller 400, and then the negative electrode current collector plate 10 is guided. The current collector plate peeling step S40 is performed so that the current collector plate 10 is peeled off from the mesh type cathode drum 200.

The current collector plate peeling step (S40) is performed while the negative electrode current collector plate 10 attached to the outer surface of the mesh type negative electrode drum 200 is guided to the upper right side by the rotation of the guide roller 400.

After the current collector plate peeling step (S40), the current collector plate washing step (S50) of immersing the negative electrode current collector plate 10 separated from the mesh type negative electrode drum 200 into the cleaning tank 500 is washed. The negative electrode current collector plate 10 washed with the current collector plate washing step S50 is wound while being transferred to the winding roller 600, and the current collector plate winding step S60 is performed.

The surface shape of the negative electrode current collector plate 10 manufactured through the above steps is as shown in FIGS. 8A and 8B.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention may be made by those skilled in the art within the above technical scope.

As described above, according to the electroplating apparatus and the method of the secondary battery negative electrode collector plate using the continuous electrode method according to the present invention, the current after forming the receiving portion of the shape corresponding to the processed pattern on the outer surface of the mesh-type negative electrode drum By configuring the support portion by adjusting the density, the receiving portion and the support portion are sequentially formed, which has the advantage of improving productivity.

In addition, since the accommodating part and the supporting part are integrally formed, durability is improved, and when the active material is accommodated in the accommodating space, desorption of the active material is delayed, thereby making it possible to manufacture a negative electrode current collector plate that maximizes electrode efficiency.

In addition, positive (+) current is applied to the positive electrode basket and negative (-) current is applied to the negative electrode drum so that the positive ions dissolved from the metal cluster are moved and adhered to the surface of the negative electrode drum to be plated. The electrolytic solution is injected into the electrolytic cell through the electrolytic solution spray passage to agitate the electrolytic solution, thereby removing the hydrogen (H ₂ ) gas generated in the cathode drum.

Claims (17)

In the electro-plating apparatus, Auxiliary tank 120 for receiving the electrolyte; An electrolyte spray flow path 260 integrally formed with a semi-cylindrical shape having a center lower surface perforated to receive the electrolyte solution of the auxiliary tank 120 and spraying the electrolyte solution so that the electrolyte is stirred at the central portion of the semi-cylindrical shape is integrally formed. An electrolytic cell 100; An anode basket (300) installed to be completely immersed in the electrolyte along the curved surface of the semi-cylindrical shape of the electrolytic cell (100) and accommodating a metal cluster (320) having the same composition as the electrolyte of the electrolytic cell (100); Maintain a constant distance from the anode basket 300 and is configured to have a cylindrical shape that rotates around the rotating shaft 220 by a power applied to be installed so that a portion is immersed in the electrolyte of the electrolytic cell 100 and the cylindrical Mesh-type negative electrode drum 200 is provided with the shape of the receiving portion of the negative electrode current collector plate 10 on the outer peripheral surface of the; A plurality of guide rollers 400 supporting and guiding the negative electrode current collector plate 10 so as to be continuously wound on the winding roller 600; And And a cleaning tank 500 for cleaning the surface of the negative electrode current collector plate in the middle of the guide roller. Positive (+) ions dissolved from the metal cluster by applying a positive (+) current to the positive basket (300) and applying a negative (-) current to the mesh-type cathode drum (200). Plated by adhering to the surface of The secondary battery negative electrode collector plate of the secondary battery negative electrode collector plate using the continuous electrophoresis method characterized in that to remove the hydrogen (H ₂ ) gas generated in the mesh-type negative electrode drum by stirring the electrolyte solution through the electrolyte injection passage into the electrolytic cell. Pole plating device. In the electro-plating apparatus, An auxiliary tank accommodating the electrolyte and an electrolyte injection flow path for injecting the electrolyte solution to agitate the electrolyte solution in the central portion of the semi-cylindrical shape having a semi-cylindrical shape having a perforated bottom surface to accommodate the electrolyte solution of the auxiliary tank. An electrolytic cell formed of an electrolytic cell, a positive electrode basket installed so as to be completely immersed in the electrolyte along the curved surface of the semi-cylindrical shape of the electrolytic cell, and accommodating a metal cluster having the same component as the electrolytic solution of the electrolytic cell therein, and a constant distance from the positive electrode basket The first negative electrode is configured to have a cylindrical shape that rotates around a rotating shaft by a power source that is installed so that a portion is immersed in the electrolytic solution of the electrolytic cell, and the outer peripheral surface of the cylindrical is provided with the shape of the receiving portion of the negative electrode current collector plate A first continuous pole apparatus having a drum; An auxiliary tank accommodating the electrolyte and an electrolyte injection flow path for injecting the electrolyte solution to agitate the electrolyte solution in the central portion of the semi-cylindrical shape having a semi-cylindrical shape having a perforated bottom surface to accommodate the electrolyte solution of the auxiliary tank. An electrolytic cell formed of an electrolytic cell, a positive electrode basket installed so as to be completely immersed in the electrolyte along the curved surface of the semi-cylindrical shape of the electrolytic cell, and accommodating a metal cluster having the same component as the electrolytic solution of the electrolytic cell therein, and a constant distance from the positive electrode basket It is configured to maintain a portion of the electrolytic solution is immersed in the electrolytic solution is composed of a cylindrical to rotate around the axis of rotation by the applied power and is provided with a mirror surface to form a support portion of the negative electrode collector plate on the outer peripheral surface of the cylindrical A second continuous pole device having a second cathode drum; A plurality of first guide rollers for guiding the negative electrode current collector plate between the first continuous pole device and the second continuous pole device; A plurality of second guide rollers for supporting and guiding the negative electrode current collector plate from the first continuous pole device or the second continuous pole device so as to be continuously wound on a winding roller; And And a cleaning tank for cleaning the surface of the negative electrode current collector plate in the middle of the second guide roller. Positive (+) ions dissolved from the metal cluster by applying positive (+) current to the positive basket and negative (-) current to the first and second negative electrode drums. Plated by moving to the surface The secondary battery negative electrode using the continuous electrode method, characterized in that for removing the hydrogen (H ₂ ) gas generated in the first and second cathode drums by agitation of the electrolyte solution by spraying the electrolyte solution into the electrolytic cell through the electrolyte injection passage. Electroplating plate of current collector. The method of claim 2, One of the first and second cathode drums is composed of a mesh type cathode drum having a pattern formed on the outer circumferential surface, the other is a continuous electrophoresis method characterized in that consisting of a mirror type cathode drum, the pattern is not formed on the outer peripheral surface Electroplating apparatus of the secondary battery negative electrode current collector using. The method of claim 1 or 3, wherein the mesh type cathode drum is: Electroplating apparatus for a secondary battery negative electrode collector plate using the continuous pole method, characterized in that the mesh-shaped pattern is formed integrally on the outer peripheral surface. The method of claim 4, wherein The electroplating apparatus of the secondary battery negative electrode collector plate using the continuous electrode method, characterized in that the pattern of the mesh is composed of a single metal or alloy. The method of claim 1 or 3, wherein the mesh type cathode drum is: Electroplating apparatus of the secondary battery negative electrode collector plate using the continuous pole method, characterized in that by attaching the mesh processed in the weaving type (Batch type) or batch type (Batch type) to the outer peripheral surface. The method of claim 6, The mesh electroplating apparatus of the secondary battery negative electrode collector plate using the continuous electrode method, characterized in that consisting of a single metal or alloy. The anode basket according to claim 1 or 2, wherein the anode basket is: A drum accommodating part formed in a shape corresponding to that of the mesh type cathode drum; A cluster accommodating part formed at one side of the drum accommodating part and accommodating a metal cluster having the same component as the electrolyte of the electrolytic cell; A separation prevention net formed on an outer side of the cluster accommodating part to prevent separation of the metal cluster; And Electrode plating apparatus for a secondary battery negative electrode collector plate using a continuous pole method characterized in that it comprises a; formed on both ends of the drum receiving portion for supplying positive (+) power. The method of claim 1 or 2, wherein the electrolyte injection flow path: Electroplating apparatus of the secondary battery negative electrode current collector using the continuous electrode method, characterized in that the communication with the interior of the electrolytic cell consisting of a cylindrical plastic pipe. The apparatus of claim 1 or 2, wherein the electroplating apparatus is: Cyclic filtering means for removing the foreign matter contained in the electrolyte while circulating the electrolyte in the auxiliary tank to the electrolytic cell; Electroplating apparatus for a secondary battery negative electrode collector plate using a continuous electrode method, characterized in that it further comprises. The apparatus of claim 1 or 2, wherein the electroplating apparatus is: Electroplating apparatus for a secondary battery negative electrode collector plate using the continuous electrode method, characterized in that for producing a negative electrode collector plate of a secondary battery using any one of metals including nickel, lithium, copper. In the electroplating method, (a) an electrolytic solution stirring step of spraying the electrolytic solution into the electrolytic cell and stirring; (b) a drum rotating step of rotating the mesh type cathode drum; (c) Cathode (-) current is applied to the mesh type cathode drum and positive (+) current is applied to the anode basket so that the positive ions dissolved from the metal cluster move to the surface of the mesh type cathode drum and plated. A current collector plate forming step of forming a negative electrode current collector plate; (d) a current collector plate peeling step of separating the negative electrode current collector plate from the surface of the mesh type negative electrode drum to separate the negative electrode current collector plate from the mesh type negative electrode drum; (e) a collector plate washing step of washing the cathode collector plate separated from the mesh type cathode drum; And (f) a current collector plate winding step of winding the washed negative electrode current collector plate. The method of claim 12, wherein the collecting plate forming step (c) is: Electroplating of the secondary battery negative electrode collector plate using the continuous electrode method, characterized in that the current applied to the mesh type cathode drum and the positive electrode basket and the current application time is different depending on the type of product and the size of the electroplating apparatus. Way. The method of claim 12, wherein the current collector plate shape step: A receiving part forming step of forming a receiving part by plating nickel (Ni) on the pattern surface of the mesh type cathode drum; And And a support part forming step in which an area of the accommodating part is gradually enlarged so that a support part is formed on the entire outer surface of the mesh-type negative electrode drum. 2. In the electroplating method, (a) an electrolytic solution stirring step of spraying the electrolytic solution into the electrolytic cell and stirring; (b) a drum rotating step of rotating the mesh type cathode drum having a pattern formed on the outer circumferential surface and the mirror type cathode drum having no pattern formed on the outer circumferential surface; (c) Cathode (-) current is applied to the mesh type cathode drum and positive (+) current is applied to the anode basket so that the positive ions dissolved from the metal cluster move to the surface of the mesh type cathode drum to plate Thereby forming a first current collector plate; (d) Positive (+) ions dissolved from the metal cluster are transferred to the surface of the mirror type cathode drum by applying a negative current to the mirror type cathode drum and a positive current to the anode basket. A second collector plate forming step of forming a negative electrode collector plate; (e) a current collector plate peeling step of separating the negative electrode current collector plate by peeling the negative electrode current collector plate from a surface of the mesh type negative electrode drum or the mirror type negative electrode drum; (f) a collector plate washing step of washing the cathode collector plate separated from the mesh type cathode drum or the mirror type cathode drum; And (g) a current collector plate winding step of winding up the washed negative electrode current collector plate. The method of claim 15, The current density applied in the first current collector plate forming step is higher than the current density applied in the second current collector forming step, the electroplating method of the secondary battery negative electrode collector plate using the continuous electrode method. The method of claim 12 or 15, wherein the electroplating method is: The electroplating method of the secondary battery negative electrode collector plate using the continuous electrode method, characterized in that for producing a negative electrode collector plate of a secondary battery using any one of metals including nickel, lithium, copper.

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