A composite current collector copper-clad production line

Abstract

This utility model discloses a composite current collector copper-clad production line, comprising a feeding mechanism, an electroplating device, a post-processing device, and a finished product winding mechanism connected in sequence. The electroplating device includes an electroplating tank, an anode device, a cathode roller group, a first current generating device, and a second current generating device. There are four anode devices, spaced apart in the electroplating tank. The cathode roller group is set on the electroplating tank and includes a first cathode roller and a second cathode roller. Current is passed through the first cathode roller and the second cathode roller respectively. Two reversing rollers are arranged below the anode devices in the electroplating tank. Electroplating solution is set in the electroplating tank, and the anode devices and reversing rollers are located below the surface of the electroplating solution. The post-processing device includes a cleaning component, a passivation tank, and a drying device. The base film of the composite current collector enters the electroplating solution through the feeding mechanism, and after being alternately wound between the reversing rollers and the cathode roller group, it passes through the cleaning component and the passivation tank in sequence, and is dried by the drying device before entering the finished product winding mechanism.

Description

Technical Field

[0001] This utility model relates to composite current collector production equipment, and more particularly to a composite current collector copper-clad production line. Background Technology

[0002] Composite current collectors for batteries offer numerous advantages that significantly enhance battery performance and application range. Their thin and lightweight nature helps reduce overall battery weight and volume, thereby increasing energy density. This is particularly important for applications requiring lightweight power sources, such as portable electronic devices and electric vehicles. Composite current collectors can be designed with optimized conductivity and mechanical strength, contributing to improved charge-discharge efficiency and cycle stability. In particular, they promote uniform charge distribution within the battery, reducing energy loss. The use of composite materials enhances the mechanical stability of the current collector, allowing the battery to maintain good performance under physical stresses such as compression or bending. This is especially important for emerging applications such as flexible batteries and wearable devices. By selecting appropriate materials and manufacturing processes, composite current collectors can exhibit excellent electrochemical stability, remaining chemically inert during battery charge-discharge processes, reducing adverse reactions with electrolytes or active materials, and extending battery life. Optimizing manufacturing processes with environmentally friendly materials allows for more economical and efficient production of composite current collectors, while minimizing environmental impact. This is crucial for the large-scale production and application of battery products. Utility Model Content

[0003] In view of the above-mentioned shortcomings of current electroplating copper plating equipment, this utility model provides a composite current collector copper cladding production line, which can optimize the quality of surface copper cladding and improve production efficiency.

[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0005] A composite current collector copper-clad production line includes a feeding mechanism, an electroplating device, a post-processing device, and a finished product winding mechanism connected in sequence. The electroplating device includes an electroplating tank, an anode device, a cathode roller group, a first current generator, and a second current generator. There are four anode devices, spaced apart in the electroplating tank. The cathode roller group is located on the electroplating tank and includes a first cathode roller and a second cathode roller. The first cathode roller is electrically connected to the first current generator, and the second cathode roller is electrically connected to the second current generator. Two reversing rollers are located below the anode devices in the electroplating tank. The electroplating tank contains an electroplating solution, and the anode devices and reversing rollers are located below the surface of the electroplating solution. The post-processing device includes a cleaning assembly, a passivation tank, and a drying device. The base film of the composite current collector enters the electroplating solution via the feeding mechanism, alternately winds between the reversing rollers and the cathode roller group, passes sequentially through the cleaning assembly and the passivation tank, and is dried by the drying device before entering the finished product winding mechanism.

[0006] According to one aspect of the present invention, the anode device is an anode titanium basket; an oxygen-free copper ingot is disposed in the anode titanium basket; the anode device is disposed between the gaps of the base films alternately coiled in the electroplating solution.

[0007] According to one aspect of this utility model, the four anode titanium baskets are arranged sequentially along the substrate film travel direction as a first anode titanium basket, a second anode titanium basket, a third anode titanium basket, and a fourth anode titanium basket; two reversing rollers in the electroplating tank are respectively disposed below the first and third anode titanium baskets; a first cathode roller is disposed above the second anode titanium basket; and a second cathode roller is disposed above the fourth anode titanium basket.

[0008] According to one aspect of the present invention, the output current intensity of the second current generating device is greater than the output current intensity of the first current generating device.

[0009] According to one aspect of the present invention, the cleaning assembly includes a first cleaning tank and a second cleaning tank; a reversing roller is provided in the first cleaning tank and the second cleaning tank.

[0010] According to one aspect of the present invention, a reversing roller is provided in the passivation groove.

[0011] According to one aspect of the present invention, transition rollers are provided at the connection points of the feeding mechanism, electroplating device, first cleaning tank, second cleaning tank, passivation tank, drying device and finished product winding mechanism.

[0012] According to one aspect of the present invention, the feeding mechanism includes a base film feeding roller and an adjusting roller.

[0013] According to one aspect of the present invention, the finished product winding mechanism includes a winding roller group and a finished product roll; the winding roller group includes an adjusting roller.

[0014] According to one aspect of the present invention, the drying apparatus includes a drying chamber and a heating and air supply assembly.

[0015] Advantages of this utility model:

[0016] The arrangement of the cathode roller group and anode device in the electroplating tank, as well as the different intensities of current passed through the first and second cathode rollers, allow the base film to undergo first-stage and second-stage electroplating in the electroplating tank in sequence, resulting in better copper plating quality and higher efficiency. Two sets of cleaning tanks are provided for better cleaning effect and better finished product quality. The production line integrates electroplating, cleaning, passivation, drying and finished product winding, resulting in high production efficiency. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the appearance of a composite current collector copper-clad production line according to the present invention.

[0019] Legend: 1. Base film feeding roller; 2. Electroplating tank; 21. First anode titanium basket; 22. Second anode titanium basket; 23. Third anode titanium basket; 24. Fourth anode titanium basket; 25. First cathode roller; 26. Second cathode roller; 3. First cleaning tank; 4. Second cleaning tank; 5. Passivation tank; 61. Drying oven; 62. Heating and air supply assembly; 71. Take-up roller group; 72. Finished roll; 8. Reversing roller; 9. Transition roller; 10. Adjusting roller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] like Figure 1As shown, a composite current collector copper-clad production line includes a feeding mechanism, an electroplating device, a post-processing device, and a finished product winding mechanism connected in sequence. The electroplating device includes an electroplating tank 2, an anode device, a cathode roller group, a first current generating device, and a second current generating device. There are four anode devices, spaced apart in the electroplating tank 2. The cathode roller group is set on the electroplating tank 2 and includes a first cathode roller 25 and a second cathode roller 26. The first cathode roller 25 is electrically connected to the first current generating device, and the second cathode roller 26 is electrically connected to the second current generating device. A reversing roller 8 is arranged below the anode device in the electroplating tank 2. The electroplating tank 2 contains an electroplating solution, and the anode device and the reversing roller 8 are both located below the surface of the electroplating solution. The post-processing device includes a cleaning component, a passivation tank 5, and a drying device. The base film of the composite current collector enters the electroplating solution through the feeding mechanism, and after being alternately wound between the reversing roller 8 and the cathode roller group, it passes through the cleaning component and the passivation tank 5 in sequence, and is dried by the drying device before entering the finished product winding mechanism.

[0023] In this embodiment, the anode device is an anode titanium basket; an oxygen-free copper ingot is placed in the anode titanium basket as the anode material; the anode device is disposed between the gaps of the alternately coiled base films in the electroplating solution; as Figure 1 As shown, along the direction of travel of the base film, there are sequentially a first anode titanium basket 21, a second anode titanium basket 22, a third anode titanium basket 23, and a fourth anode titanium basket 24. A preferred embodiment is that the reversing roller 8 in the electroplating tank 2 is positioned below the first anode titanium basket 21 and the third anode titanium basket 23; the first cathode roller 25 and the second cathode roller 26 are respectively positioned above the second anode titanium basket 22 and the fourth anode titanium basket 24. This allows the base film to pass precisely through the area between the anode titanium baskets as it alternately winds between the two reversing rollers 8 and the cathode roller group. In the electroplating process, the distance between the anode and cathode is called the electrode spacing. An excessively large electrode spacing can lead to uneven circuit density distribution, reduce electroplating efficiency, and affect the electroplating effect. In this embodiment, alternating winding is used to maintain a suitable and uniform electrode spacing, which can improve the uniformity of the coating and increase electroplating efficiency.

[0024] In practical applications, electroplating equipment is equipped with two rectifiers (i.e., a first current generator and a second current generator) to provide currents of different intensities to the two cathode rollers respectively. The function of the rectifier is to convert the alternating current from the power grid into direct current. The current intensity of the second cathode roller 26 is greater than that of the first cathode roller 25. This is because the conductivity of the base film is poor, and the base film is prone to burning when only one-stage electroplating is used. Therefore, two current intensities are used for two-stage electroplating. After the first-stage electroplating, the resistance of the base film decreases, and the current in the second-stage electroplating can be increased to improve the electroplating efficiency.

[0025] The cleaning assembly includes a first cleaning tank 3 and a second cleaning tank 4; the first cleaning tank 3 and the second cleaning tank 4 are equipped with reversing rollers 8; the two cleaning processes can more effectively remove residual electroplating solution from the surface.

[0026] After copper plating and two cleaning processes, the base film passes through the passivation tank 5 to passivate the copper plating on its surface, forming a dense protective film to prevent oxidation of the copper plating layer. Correspondingly, the passivation tank 5 is also equipped with a reversing roller 8.

[0027] In practical applications, transition rollers 9 are provided at the connection points of the feeding mechanism, electroplating device, first cleaning tank 3, second cleaning tank 4, passivation tank 5, drying device and finished product winding mechanism, which play the roles of support, guidance and transition; after the base film comes out of the previous device, it is guided into the next device by the transition rollers 9.

[0028] The feeding mechanism includes a base film feeding roller 1 and an adjusting roller 10; the finished product winding mechanism includes a winding roller group 71 and a finished product roll 72. The winding roller group 71 includes an adjusting roller 10; the adjusting roller 10 can adjust the angle to keep the base film under a certain tension and maintain a suitable tension.

[0029] The drying device includes a drying chamber 61 and a heating and air supply assembly 62. The base film with copper plating and passivation is dried in the drying chamber 61 to remove surface liquid, and then wound into a finished roll 72 by the take-up roller group 71. The drying chamber 61 is set at an angle to adapt to the angle of the base film.

[0030] Example 2

[0031] like Figure 1 As shown, a composite current collector copper-clad production line includes a feeding mechanism, an electroplating device, a post-processing device, and a finished product winding mechanism connected in sequence. The electroplating device includes an electroplating tank 2, an anode device, a cathode roller group, a first current generating device, and a second current generating device. There are four anode devices, spaced apart in the electroplating tank 2. The cathode roller group is set on the electroplating tank 2 and includes a first cathode roller 25 and a second cathode roller 26. The first cathode roller 25 is electrically connected to the first current generating device, and the second cathode roller 26 is electrically connected to the second current generating device. A reversing roller 8 is arranged below the anode device in the electroplating tank 2. The electroplating tank 2 contains an electroplating solution, and the anode device and the reversing roller 8 are both located below the surface of the electroplating solution. The post-processing device includes a cleaning component, a passivation tank 5, and a drying device. The base film of the composite current collector enters the electroplating solution through the feeding mechanism, and after being alternately wound between the reversing roller 8 and the cathode roller group, it passes through the cleaning component and the passivation tank 5 in sequence, and is dried by the drying device before entering the finished product winding mechanism.

[0032] In this embodiment, the anode device is an anode titanium basket; an oxygen-free copper ingot is placed in the anode titanium basket as the anode material; the anode device is disposed between the gaps of the alternately coiled base films in the electroplating solution; as Figure 1As shown, along the direction of travel of the base film, there are sequentially a first anode titanium basket 21, a second anode titanium basket 22, a third anode titanium basket 23, and a fourth anode titanium basket 24. A preferred embodiment is that the reversing roller 8 in the electroplating tank 2 is positioned below the first anode titanium basket 21 and the third anode titanium basket 23; the first cathode roller 25 and the second cathode roller 26 are respectively positioned above the second anode titanium basket 22 and the fourth anode titanium basket 24. This allows the base film to pass precisely through the area between the anode titanium baskets as it alternately winds between the two reversing rollers 8 and the cathode roller group. In the electroplating process, the distance between the anode and cathode is called the electrode spacing. An excessively large electrode spacing can lead to uneven circuit density distribution, reduce electroplating efficiency, and affect the electroplating effect. In this embodiment, alternating winding is used to maintain a suitable and uniform electrode spacing, which can improve the uniformity of the coating and increase electroplating efficiency.

[0033] In practical applications, electroplating equipment is equipped with two rectifiers (i.e., a first current generator and a second current generator) to provide currents of different intensities to the two cathode rollers respectively. The function of the rectifier is to convert the alternating current from the power grid into direct current. The current intensity of the second cathode roller 26 is greater than that of the first cathode roller 25. This is because the conductivity of the base film is poor, and the base film is prone to burning when only one-stage electroplating is used. Therefore, two current intensities are used for two-stage electroplating. After the first-stage electroplating, the resistance of the base film decreases, and the current in the second-stage electroplating can be increased to improve the electroplating efficiency.

[0034] In this embodiment, a 12V 150A current is passed through the first cathode roller 25, and a 12V 160A current is passed through the second cathode roller 26; the base film completes the first-stage electroplating when passing through the corresponding areas of the first anode titanium basket 21 and the second anode titanium basket 22; and completes the second-stage electroplating when passing through the corresponding areas of the third anode titanium basket 23 and the fourth anode titanium basket 24, thus finally meeting the process requirements.

[0035] In practical applications, the electroplating solution is pumped into the electroplating tank 2 through a mother tank and returned to the tank by overflow to ensure the uniformity of the electroplating solution.

[0036] The cleaning assembly includes a first cleaning tank 3 and a second cleaning tank 4; the first cleaning tank 3 and the second cleaning tank 4 are equipped with reversing rollers 8; the two cleaning processes can more effectively remove residual electroplating solution from the surface; pure water is introduced into the cleaning tank and discharged in an overflow manner to ensure the cleaning effect.

[0037] After copper plating and two cleaning processes, the base film passes through the passivation tank 5 to passivate the copper plating on its surface, forming a dense protective film to prevent oxidation of the copper plating layer. Correspondingly, the passivation tank 5 is also equipped with a reversing roller 8.

[0038] In practical applications, transition rollers 9 are provided at the connection points of the feeding mechanism, electroplating device, first cleaning tank 3, second cleaning tank 4, passivation tank 5, drying device and finished product winding mechanism, which play the roles of support, guidance and transition; after the base film comes out of the previous device, it is guided into the next device by the transition rollers 9.

[0039] The feeding mechanism includes a base film feeding roller 1 and an adjusting roller 10; the finished product winding mechanism includes a winding roller group 71 and a finished product roll 72. The winding roller group 71 includes an adjusting roller 10; the adjusting roller 10 can adjust the angle to keep the base film under a certain tension and maintain a suitable tension.

[0040] The drying device includes a drying chamber 61 and a heating and air supply assembly 62. The base film with copper plating and passivation is dried in the drying chamber 61 to remove surface liquid, and then wound into a finished roll 72 by the take-up roller group 71. The drying chamber 61 is set at an angle to adapt to the angle of the base film.

[0041] Advantages of this utility model:

[0042] The arrangement of the cathode roller group and anode device in the electroplating tank, as well as the different intensities of current passed through the first and second cathode rollers, allow the base film to undergo first-stage and second-stage electroplating in the electroplating tank in sequence, resulting in better copper plating quality and higher efficiency. Two sets of cleaning tanks are provided for better cleaning effect and better finished product quality. The production line integrates electroplating, cleaning, passivation, drying and finished product winding, resulting in high production efficiency.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A composite current collector copper-clad production line, comprising a feeding mechanism, an electroplating device, a post-processing device, and a finished product winding mechanism connected in sequence, characterized in that, The electroplating apparatus includes an electroplating tank, an anode device, and a cathode roller assembly; there are four anode devices, spaced apart in the electroplating tank; the cathode roller assembly is disposed on the electroplating tank, including a first cathode roller and a second cathode roller; current is passed through the first cathode roller and the second cathode roller respectively; Two reversing rollers are installed below the anode device in the electroplating tank; the electroplating tank contains electroplating solution, and both the anode device and the reversing rollers are located below the surface of the electroplating solution; the post-treatment device includes a cleaning assembly, a passivation tank, and a drying device. The base film of the composite current collector enters the electroplating solution through the feeding mechanism, and after being alternately wound between the reversing roller and the cathode roller group, it passes through the cleaning component and the passivation tank in sequence, and is then dried by the drying device before entering the finished product winding mechanism.

2. The composite current collector copper-clad production line according to claim 1, characterized in that, The anode device is an anode titanium basket; an oxygen-free copper ingot is placed in the anode titanium basket; the anode device is placed between the gaps of the base films that are alternately coiled in the electroplating solution.

3. The composite current collector copper-clad production line according to claim 2, characterized in that, The four anode titanium baskets are arranged sequentially along the travel direction of the base film as the first anode titanium basket, the second anode titanium basket, the third anode titanium basket, and the fourth anode titanium basket; the two reversing rollers in the electroplating tank are respectively arranged below the first anode titanium basket and the third anode titanium basket; the first cathode roller is arranged above the second anode titanium basket; and the second cathode roller is arranged above the fourth anode titanium basket.

4. The composite current collector copper-clad production line according to claim 1, characterized in that, The current intensity of the second cathode roller is greater than that of the first cathode roller.

5. The composite current collector copper-clad production line according to claim 1, characterized in that, The cleaning assembly includes a first cleaning tank and a second cleaning tank; a reversing roller is provided in the first cleaning tank and the second cleaning tank.

6. The composite current collector copper-clad production line according to claim 5, characterized in that, A reversing roller is provided in the passivation groove.

7. The composite current collector copper-clad production line according to claim 5, characterized in that, Transition rollers are provided at the connection points of the feeding mechanism, electroplating device, first cleaning tank, second cleaning tank, passivation tank, drying device and finished product winding mechanism.

8. The composite current collector copper-clad production line according to claim 1, characterized in that, The feeding mechanism includes a base film feeding roller and an adjusting roller.

9. The composite current collector copper-clad production line according to claim 8, characterized in that, The finished product winding mechanism includes a winding roller assembly and a finished product roll; the winding roller assembly includes an adjusting roller.

10. The composite current collector copper-clad production line according to claim 1, characterized in that, The drying device includes a drying chamber and a heating and air supply assembly.

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