Solar cell plating device

Abstract

The embodiment of the present application provides a solar cell electroplating device, which comprises an electroplating tank, the electroplating tank containing an electroplating solution; a cathode carrier, the cathode carrier being provided with an adsorption surface for adsorbing and fixing a cell, and the adsorption surface being provided with a cathode probe; and an anode roller, the anode roller being arranged below the cathode carrier in the electroplating tank and being rotatably connected to the electroplating tank, and the surface of the anode roller being provided with a spoiler structure protruding from the circumferential surface. In the process of horizontal movement of the cell for electroplating, the anode roller rotates, the spoiler structure protruding from the circumferential surface of the anode roller can accelerate the convection of the electroplating solution, and the sharp end of the spoiler structure can also improve the electric field intensity through the discharge effect, so that the electroplating rate can be improved, and the electroplating production capacity of the cell can be improved.

Description

Technical Field

[0001] This invention relates to the field of solar cell electroplating technology, and in particular to a solar cell electroplating apparatus. Background Technology

[0002] In the fabrication of electrodes for solar cells, traditional processes typically employ screen printing, while electroplating technology, as a novel electrode preparation method, is increasingly being researched. Electroplated electrodes, compared to screen-printed electrodes, offer a higher aspect ratio and better conductivity, resulting in lower internal resistance and reduced losses due to light shading, thereby further improving the photoelectric conversion efficiency of solar cells. Electroplating, as a promising electrode preparation method, can significantly reduce the cost of solar cell manufacturing processes.

[0003] Current electroplating equipment utilizes the surface tension of the electroplating solution to float thin solar cells on its surface. Rollers drive the cells horizontally for transport, enabling the electroplating of grid lines in different areas of the cells. To prevent the electroplating solution from wetting the upper surface of the cells, this equipment requires controlling the solution flow at a low speed to maintain a stable surface.

[0004] However, in this type of electroplating equipment, the low flow rate of the electroplating solution reduces the electrochemical reaction rate between the solar cells and the electroplating solution, resulting in reduced electroplating efficiency and limiting the production capacity of solar cells. Summary of the Invention

[0005] This invention provides a solar cell electroplating apparatus, which aims to solve the problems of low efficiency and low production capacity caused by the low flow rate of electroplating solution in existing electroplating apparatuses.

[0006] This invention provides a solar cell electroplating apparatus, the solar cell electroplating apparatus comprising:

[0007] An electroplating tank containing an electroplating solution;

[0008] A cathode stage, wherein the cathode stage is provided with an adsorption surface for adsorbing and fixing the battery cells, and a conductive cathode is provided in the area where the adsorption surface is located.

[0009] An anode roller is disposed in the electroplating tank below the cathode stage and is rotatably connected to the electroplating tank. The surface of the anode roller is provided with a turbulence structure protruding from the circumferential surface.

[0010] Optionally, the turbulence structure is a strip-shaped turbulence plate arranged along the axial direction of the anode roller.

[0011] Optionally, a plurality of the strip-shaped deflectors are distributed axially around the anode roller.

[0012] Optionally, the plurality of strip-shaped baffles are evenly distributed at equal intervals. Optionally, the anode roller has a hollow cavity inside to hold the anode metal, and the surface of the anode roller has convection pores connecting the hollow cavity and the electroplating solution.

[0013] Optionally, the cell electroplating apparatus further includes:

[0014] A cathode driving assembly is provided, the output end of which is fixedly connected to the cathode stage. The cathode driving assembly drives the cathode stage to move synchronously with the solar cell.

[0015] Optionally, the cell electroplating apparatus further includes:

[0016] A vacuum pump, wherein the adsorption surface is provided with multiple adsorption holes, and the adsorption holes are connected to the vacuum pump.

[0017] Optionally, the conductive cathode is a rod-shaped probe detachably connected to the cathode stage; or, the conductive cathode is a cathode contact disposed on the adsorption surface. Optionally, the surface of the cathode stage is provided with a corrosion-resistant insulating coating.

[0018] Optionally, the cathode stage includes:

[0019] A stage base, which is fixedly connected to the output end of the cathode driving assembly;

[0020] A stage cover plate is stacked and fixed to the stage base. A vacuum cavity is provided between the first side of the stage cover plate and the stage base. An adsorption surface is provided on the second side of the stage cover plate. The adsorption hole is connected to the vacuum cavity, and the vacuum cavity is connected to the vacuum pump.

[0021] Optionally, the cathode stage further includes:

[0022] A sealing ring is disposed between the platform cover plate and the platform base.

[0023] Optionally, the stage cover plate is provided with a through hole penetrating the first side and the second side, and the rod-shaped probe passes through the through hole and is threadedly connected to the stage base.

[0024] Optionally, the cell electroplating apparatus further includes:

[0025] The light source is disposed inside the electroplating tank and is distributed on both sides of the axis of the anode roller.

[0026] The battery cell electroplating apparatus of this invention includes a rotatable anode roller installed in the electroplating tank and a cathode stage that adsorbs battery cells, placing the cells between the cathode stage and the anode roller. In this configuration, one side of the battery cell is wetted by the electroplating solution, while the other side remains adhered to the cathode stage, preventing the electroplating solution from contaminating the other surface. During the horizontal movement of the battery cell for electroplating, the rotation of the anode roller utilizes a turbulence-inducing structure protruding from its circumferential surface to accelerate the convection of the electroplating solution. Simultaneously, the tip discharge effect of the turbulence-inducing structure enhances the electric field strength, both of which increase the electroplating rate and improve the battery cell electroplating capacity. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a battery cell electroplating apparatus according to an embodiment of the present invention is shown;

[0029] Figure 2 An embodiment of the present invention is shown. Figure 1 A top view of a battery cell electroplating device;

[0030] Figure 3 An embodiment of the present invention is shown. Figure 1 Side view of the battery cell electroplating device;

[0031] Figure 4 A schematic diagram of the structure of an anode roller according to an embodiment of the present invention is shown;

[0032] Figure 5 This diagram illustrates the position of the battery cell at the start of electroplating in an embodiment of the present invention.

[0033] Figure 6 This diagram illustrates the position of the battery cell at the end of electroplating in an embodiment of the present invention.

[0034] Figure 7 A schematic diagram of the cathode stage in an embodiment of the present invention is shown;

[0035] Figure 8 A top view of the cathode stage in an embodiment of the present invention is shown;

[0036] Figure 9 An embodiment of the present invention is shown. Figure 8 A cross-sectional view along the AA direction;

[0037] Figure 10An embodiment of the present invention is shown. Figure 8 A cross-sectional view along the BB direction;

[0038] Figure 11 A schematic diagram of the platform base in an embodiment of the present invention is shown.

[0039] Explanation of the attached drawing numbers:

[0040] Electroplating tank-10, cathode stage-11, anode roller-12, turbulence structure-13, light source-14, electroplating power supply-20, battery cell-30, liquid supply tank-40, liquid supply pump-41, conductive cathode-111, stage base-112, stage cover plate-113, vacuum chamber-114, sealing ring-115. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Reference Figures 1 to 6 This illustration shows a battery cell electroplating apparatus provided by an embodiment of the present invention, the battery cell electroplating apparatus comprising:

[0043] Electroplating tank 10, wherein the electroplating tank 10 contains electroplating solution;

[0044] A cathode stage 11 is provided with an adsorption surface for adsorbing and fixing the battery cell 30, and a conductive cathode is provided in the area where the adsorption surface is located.

[0045] An anode roller 12 is disposed in the electroplating tank 10 below the cathode stage 11 and is rotatably connected to the electroplating tank 10. The surface of the anode roller 12 is provided with a turbulence structure 13 protruding from the circumferential surface.

[0046] like Figure 1 and Figure 2 As shown, the battery cell electroplating apparatus of this embodiment includes an electroplating tank 10 for holding electroplating solution, a cathode stage 11 electrically connected to the negative electrode of the electroplating power supply 20, and an anode roller 12 electrically connected to the positive electrode of the electroplating power supply 20. The electroplating tank 10 can be a cubic container with an open top, allowing the cathode stage 11 to move and carry the battery cell 30. Figure 3As shown in the diagram, the cathode stage 11 is provided with an adsorption surface for adsorbing and fixing the battery cell 30. This adsorption surface can be the lower surface of the cathode stage 11 facing the bottom of the electroplating tank 10. A conductive cathode is provided in the area corresponding to the adsorption surface. The conductive cathode is made of conductive material and is electrically connected to the negative electrode of the electroplating power supply 20. The conductive cathode extends from the adsorption surface and can contact the surface of the battery cell 30.

[0047] like Figure 4 As illustrated, the anode roller 12 has a cylindrical roller structure. The anode roller 12 may include a roller body 121 and a rotating shaft 112 connected to the electroplating tank 10. The diameter of the roller body 121 can be larger than the diameter of the rotating shaft 112, and conductive slip rings can be fitted at both ends of the rotating shaft 112. The anode roller 12 is installed inside the electroplating tank 10 below the cathode stage 11, spanning two opposite side walls of the electroplating tank 10. The conductive slip rings are fixed to the side walls and electrically connected to the positive terminal of the electroplating power supply 20. The rotating shaft 112 can be driven to rotate relative to the conductive slip rings by a motor installed outside the electroplating tank 10. When the anode roller 12 rotates, the turbulence structure 13 protruding from its circumferential surface can agitate the electroplating solution in the electroplating tank 10, promoting the flow of the electroplating solution and enabling rapid convection of the electrochemically reacting electroplating solution. This allows for a more uniform concentration of the electroplating solution throughout the electroplating tank, preventing low concentrations caused by a lack of metal cations in the electroplating areas. It should be noted that the aforementioned turbulence structure 13 is not limited to a strip or block structure, nor is it limited to a continuous or segmented structure. Any structure that protrudes from the surface of the anode roller 12 and can agitate the electroplating solution is acceptable.

[0048] Furthermore, in the electroplating circuit formed by the electroplating power source 20, cathode stage 11, battery cell 30, electroplating solution, and anode roller 12, the utilization efficiency of the electroplating solution can be improved by controlling the timing of energizing and de-energizing the electroplating power source 20. For example... Figure 5 As illustrated, the cathode stage 11 carries the solar cell 30 and moves along the X direction, gradually approaching the axis of the anode roller 12. When the right edge of the solar cell 30 reaches position M, the right edge of the solar cell 30 coincides with the longitudinal section of the anode roller 12, and the gap between the lower surface of the solar cell 30 and the end of the turbulence structure 13 is minimized. At this point, the tip discharge effect of the turbulence structure 13 protruding from the surface of the anode roller 12 will form a strong electric field between the solar cell 30 and the turbulence structure 13, which can accelerate the plating rate of the solar cell 30 when it passes this position. Figure 6As illustrated, the battery cell 30 continues to move along the X direction until its left edge reaches position M and then leaves that position, thus completing the electroplating process. In conjunction with the above electroplating process, the electroplating power supply 20 can be maintained during the time the right and left edges of the battery cell 30 move between positions M, which is also the time when the electroplating process is underway. Before the right edge of the battery cell 30 reaches position M and after the left edge of the battery cell 30 leaves position M, the electroplating power supply 20 can be cut off to avoid forming grid lines of inconsistent width and thickness on the battery cell 30.

[0049] Combination Figure 1 and Figure 2 As illustrated, in the battery cell electroplating apparatus of this embodiment of the invention, a liquid supply tank 40 and a liquid supply pump 41 are also arranged outside the electroplating tank 10. The liquid supply tank 40 and the liquid supply pump 41 are connected to the electroplating tank 10 through pipelines, and can circulate and replenish the electroplating solution into the electroplating tank 10 to maintain the cation concentration.

[0050] As can be seen, the battery cell electroplating apparatus of this embodiment of the invention has a rotatable anode roller installed in the electroplating tank, and a cathode platform is used to adsorb the battery cell, placing the battery cell between the cathode platform and the anode roller. At this time, one side of the battery cell can be wetted by the electroplating solution, while the other side remains adsorbed and adhered to the cathode platform, which can prevent the electroplating solution from wetting and contaminating the other surface. During the horizontal movement of the battery cell for electroplating, the rotation of the anode roller can accelerate the convection of the electroplating solution using the turbulence structure protruding from its circumferential surface. At the same time, the tip discharge effect of the turbulence structure can also increase the electric field strength, both of which can improve the electroplating rate and increase the battery cell electroplating capacity.

[0051] Optionally, refer to Figure 4 The turbulence structure 13 is a strip-shaped turbulence plate arranged along the axial direction of the anode roller 12.

[0052] Specifically, in one embodiment, the aforementioned turbulence structure 13 can be... Figure 4 The schematic diagram shows a long, strip-shaped baffle plate, positioned along the axial direction of the anode roller 12 and attached to its circumferential surface. When the anode roller 12 rotates, the baffle plate acts as a paddle, agitating the electroplating solution. This continuously extending strip-shaped baffle plate has a larger surface area, resulting in a more significant acceleration of the electroplating solution's flow. The anode roller 12 can be made of titanium, a metal that is difficult to react with the electroplating solution. The strip-shaped baffle plate can be directly machined onto the cylindrical surface of the anode roller 12, or it can be pre-machined separately and then welded together. Furthermore, although... Figure 4 The cross-section of the strip-shaped spoiler shown is rectangular. The cross-section of the strip-shaped spoiler can also be triangular or semi-circular. The narrower and thinner the top of the strip-shaped spoiler, the more obvious its tip discharge effect, and a stronger electric field can be formed between the spoiler structure 13 and the battery cell 30.

[0053] Optionally, refer to Figure 4 The multiple strip-shaped baffles are axially distributed around the anode roller 12.

[0054] Specifically, in one implementation, such as Figure 4 As shown in the diagram, there can be multiple strip-shaped baffles set on the circumferential surface of the anode roller 12. Thus, when the strip-shaped baffles rotate, they can continuously agitate the electroplating solution to promote convection.

[0055] Optionally, refer to Figure 4 The multiple strip-shaped spoilers are evenly distributed at equal intervals.

[0056] Specifically, in one implementation, such as Figure 4 As illustrated, multiple strip-shaped baffles are evenly distributed around the axial direction of the anode roller 12, meaning that the central angles formed by each adjacent pair of strip-shaped baffles and the axis of the anode roller 12 are all equal. When the anode roller 12 rotates at a constant speed, due to the even distribution of the multiple strip-shaped baffles, each strip-shaped baffle takes the same amount of time to rotate to the position with the minimum distance from the surface to be plated on the battery cell 30. This helps maintain the stability of the electric field and is beneficial for maintaining the consistency of the grid lines on the battery cell 30 during plating. It can be understood that the higher the rotational speed of the anode roller 12, the shorter the time it takes for each strip-shaped baffle to return to position M as shown in the figure, or in other words, the shorter the time for adjacent strip-shaped baffles to take over, which can also improve the electroplating efficiency. Electroplating test results for a certain specification of battery cell 30 show that the electroplating quality and efficiency are better when the rotational speed of the anode roller 12 is 300 r / min-500 r / min.

[0057] Optionally, the anode roller 12 has a hollow cavity inside for holding anode metal, and the surface of the anode roller 12 has convection pores that connect the hollow cavity and the electroplating solution.

[0058] Specifically, in one embodiment, the anode roller 12 can be made using a hollow shaft tube, forming a hollow cavity inside the anode roller 12. This hollow cavity can hold the anode metal corresponding to the electroplating cations, for example, copper particles. To ensure that the copper particles can fully react with the electroplating solution to replenish the metal cations, convection pores can be provided on the surface of the anode roller 12, connecting the hollow cavity to the electroplating solution. The electroplating solution can react with the anode metal through the convection pores. This anode roller 12 can fully utilize its internal space to design a soluble anode structure, thus eliminating the need to occupy the internal space of the electroplating tank 10 to specifically arrange a container for holding the anode metal.

[0059] Optionally, the cell electroplating apparatus further includes:

[0060] A cathode driving assembly is provided, the output end of which is fixedly connected to the cathode stage 11. The cathode driving assembly drives the cathode stage 11 to move synchronously with the solar cell 30.

[0061] Specifically, in one embodiment, the battery cell electroplating apparatus of this invention further includes a cathode driving component. The cathode driving component provides driving power to the cathode stage 11. The power output end of this component is fixedly connected to the cathode stage 11, driving the cathode stage 11 to translate along the X direction as shown in the figure. At this time, the battery cell 30 is adsorbed below the cathode stage 11, and the two move synchronously. Therefore, compared to traditional electroplating apparatuses, there is no relative movement between the cathode probe and the battery cell 30, and the cathode probe will not scratch the battery cell 30. It should be noted that the cathode driving component can be any component capable of outputting linear motion, such as a lead screw and slider assembly, a gear and rack assembly, or a synchronous belt assembly. This embodiment of the invention does not limit the specific structure of the cathode driving component. Furthermore, when electroplating capacity needs to be further increased, if the structural space allows, the electroplating apparatus of this invention can be equipped with multiple cathode stages 11. These multiple cathode stages 11 can move sequentially in an assembly line manner under the drive of the cathode driving component, reducing the waiting time for loading and unloading battery cells and further improving electroplating efficiency and capacity.

[0062] Optionally, refer to Figure 8 The battery cell electroplating apparatus further includes:

[0063] The vacuum pump has a plurality of adsorption holes 11a on its adsorption surface, and the adsorption holes 11a are connected to the vacuum pump.

[0064] Specifically, in one embodiment, the battery cell electroplating apparatus of this invention can adsorb and fix the battery cell 30 onto the adsorption surface of the cathode stage 11 by vacuum adsorption. For example... Figure 8 As illustrated, multiple adsorption holes 11a are provided on the adsorption surface. These holes 11a can form a rectangular shape around the adsorption surface, and their openings can be connected together through grooves recessed on the adsorption surface. The opening at the other end of each adsorption hole 11a is connected to a vacuum pump. This vacuum adsorption fixing method can achieve non-destructive fixing of the battery cell 30. The greater the negative pressure, the tighter the adsorption, which also helps prevent electroplating solution from penetrating between the battery cell 30 and the adsorption surface.

[0065] Optionally, the conductive cathode 111 is a rod-shaped probe or cathode contact disposed on the adsorption surface.

[0066] Specifically, in one embodiment, the conductive cathode 111 located on the adsorption surface and in contact with the battery cell 30 can be a rod-shaped probe, mounted on the cathode stage 11. One end of the rod-shaped probe is fixed to the cathode stage 11 and electrically connected to the negative electrode of the electroplating power supply 20 via a conductor such as a wire. The other end of the rod-shaped probe extends from the adsorption surface and can contact the battery cell 30. This rod-shaped probe can also be a retractable probe with an internal spring or other elastic element. After the end of the rod-shaped probe extends from the adsorption surface, when the battery cell 30 is adsorbed and fixed on the adsorption surface, the end of the retractable probe is tightly and reliably electrically connected to the surface of the battery cell 30. Furthermore, the conductive cathode 111 can also be a cathode contact protruding from the adsorption surface, which can be integrally formed with the cathode stage 11 or spot-welded, or it can be a dot-matrix conductive coating formed by printing conductive paint.

[0067] Optionally, the rod-shaped probe is detachably connected to the cathode stage 11.

[0068] Specifically, in one embodiment, when the conductive cathode 111 in the battery cell electroplating apparatus of this invention is a rod-shaped probe, the rod-shaped probe and the cathode stage 11 are connected in a detachable manner to facilitate maintenance and replacement of the rod-shaped probe.

[0069] Optionally, the surface of the cathode stage 11 is provided with a corrosion-resistant insulating layer.

[0070] Specifically, in one embodiment, to prevent corrosion of the cathode stage 11 when it comes into contact with the electroplating solution, and to prevent cations from being deposited on the surface of the cathode stage 11 and wasting their potential, a corrosion-resistant insulating layer is applied to the portion of the cathode stage 11 that comes into contact with the electroplating solution. For example, this layer could be a corrosion-resistant rubber layer, which provides a certain degree of elasticity and, while achieving corrosion protection and insulation, also acts as a seal to prevent the electroplating solution from penetrating.

[0071] Optionally, refer to Figures 8 to 11 The cathode stage 11 includes:

[0072] A stage base 112 is fixedly connected to the output end of the cathode drive assembly;

[0073] A stage cover plate 113 is stacked and fixed with the stage base 112. A vacuum cavity 114 is provided between the first side of the stage cover plate 113 and the stage base 112. An adsorption surface is provided on the second side of the stage cover plate 113. The adsorption hole 11a is connected to the vacuum cavity 114. The vacuum cavity 114 is connected to the vacuum pump.

[0074] Specifically, in one implementation, such as Figures 8 to 11 As illustrated, the cathode stage 11 described above may include a stage base 112 and a stage cover plate 113 stacked on top of each other. Both the stage base 112 and the stage cover plate 113 are rectangular plate structures, with screw holes around their edges for fastening after stacking. The first side of the stage cover plate 113 is the side in contact with the stage base 112, and a groove can be machined into this side. A groove can also be machined into the stage base 112. After the stage base 112 and the stage cover plate 113 are stacked and fixed, a vacuum cavity 114 is formed between them, which is connected to a vacuum pump. The second side of the stage cover plate 113 is the side with an adsorption surface. An adsorption hole 11a penetrates both the first and second sides and is connected to the vacuum cavity 114. The stage base 112 can be fixed to the output end of the cathode driving assembly, driving the stage cover plate 113 and the solar cells 30 adsorbed on the second side of the stage cover plate 113.

[0075] Optionally, refer to Figure 9 or Figure 10 The cathode stage 11 further includes:

[0076] A sealing ring 115 is disposed between the platform cover plate 113 and the platform base 112.

[0077] Specifically, in one implementation, such as Figure 9 or Figure 10 As illustrated, to prevent air leakage that could cause the electroplating solution to be drawn into the vacuum chamber 114, an annular groove can be machined at the contact point between the stage cover plate 113 and the stage base 112, and a sealing ring 115 can be embedded in the annular groove to improve the airtightness of the cathode stage 11 by utilizing the elastic deformation of the sealing ring 115.

[0078] Optionally, refer to Figure 9 The platform cover plate 113 is provided with a through hole penetrating the first side and the second side, and the rod-shaped probe passes through the through hole and is threadedly connected to the platform base 112.

[0079] Specifically, in one implementation, such as Figure 9 As illustrated, in order to provide sufficient installation space for the rod-shaped probe, a through hole penetrating the first and second sides can be provided on the platform cover plate 113. The size of the through hole can be slightly larger than the diameter of the rod-shaped probe. A threaded hole is machined on the platform base 112, and an external thread is provided at the bottom end of the rod-shaped probe. The rod-shaped probe is screwed and fixed on the platform base 112 through the threaded connection and passes through the through hole, so as to make contact with the battery cell 30 for electrical connection.

[0080] Optionally, refer to Figure 3 The battery cell electroplating apparatus further includes:

[0081] Light source 14 is disposed in the electroplating tank 10 and distributed on both sides of the axis of the anode roller 12.

[0082] Specifically, in one embodiment, because the resistance of the battery cell 30 itself is relatively high, in order to reduce the difficulty of electroplating, such as Figure 3 As illustrated, light sources 14 can also be arranged in the electroplating tank 10. The two sets of light sources 14 are located on both sides of the axis of the anode roller 12, respectively, and irradiate the input and output positions of the battery cell 30. By utilizing the photoelectric effect, the movement of charge carriers is promoted in a light-induced manner, thereby improving the electroplating efficiency.

[0083] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0084] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A battery cell electroplating apparatus, characterized in that, The battery cell electroplating apparatus includes: An electroplating tank containing an electroplating solution; A cathode stage, wherein the cathode stage is provided with an adsorption surface for adsorbing and fixing the battery cells, and a conductive cathode is provided in the area where the adsorption surface is located. An anode roller is disposed in the electroplating tank below the cathode stage and is rotatably connected to the electroplating tank. The surface of the anode roller is provided with a turbulence structure protruding from the circumferential surface. The turbulence structure is a strip-shaped turbulence plate arranged along the axial direction of the anode roller; a plurality of the strip-shaped turbulence plates are distributed around the axial direction of the anode roller; the plurality of the strip-shaped turbulence plates are evenly distributed at equal intervals.

2. The battery cell electroplating apparatus according to claim 1, characterized in that, The anode roller has a hollow cavity inside to hold the anode metal, and the surface of the anode roller has convection pores that connect the hollow cavity and the electroplating solution.

3. The battery cell electroplating apparatus according to claim 1, characterized in that, The battery cell electroplating apparatus further includes: A cathode driving assembly is provided, the output end of which is fixedly connected to the cathode stage. The cathode driving assembly drives the cathode stage to move synchronously with the solar cell.

4. The battery cell electroplating apparatus according to claim 3, characterized in that, The battery cell electroplating apparatus also includes: A vacuum pump, wherein the adsorption surface is provided with multiple adsorption holes, and the adsorption holes are connected to the vacuum pump.

5. The battery cell electroplating apparatus according to claim 1, characterized in that, The conductive cathode is a rod-shaped probe or cathode contact disposed on the adsorption surface.

6. The battery cell electroplating apparatus according to claim 5, characterized in that, The rod-shaped probe is detachably connected to the cathode stage.

7. The battery cell electroplating apparatus according to claim 1, characterized in that, The surface of the cathode stage is provided with a corrosion-resistant insulating coating.

8. The battery cell electroplating apparatus according to claim 4, characterized in that, The cathode stage includes: A stage base, which is fixedly connected to the output end of the cathode driving assembly; A stage cover plate is stacked and fixed to the stage base. A vacuum cavity is provided between the first side of the stage cover plate and the stage base. An adsorption surface is provided on the second side of the stage cover plate. The adsorption hole is connected to the vacuum cavity, and the vacuum cavity is connected to the vacuum pump.

9. The battery cell electroplating apparatus according to claim 8, characterized in that, The cathode stage further includes: A sealing ring is disposed between the platform cover plate and the platform base.

10. The battery cell electroplating apparatus according to claim 8, characterized in that, The platform cover plate is provided with a through hole that extends through the first side and the second side, and a rod-shaped probe provided on the adsorption surface passes through the through hole and is threadedly connected to the platform base.

11. The battery cell electroplating apparatus according to claim 1, characterized in that, The battery cell electroplating apparatus also includes: The light source is disposed inside the electroplating tank and is distributed on both sides of the axis of the anode roller.

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