Battery piece electroplating device

By designing the spray plate assembly and brush assembly, the problems of poor uniformity and complex process in the electroplating of photovoltaic cells were solved, achieving uniform coverage and stable recovery of the chemical solution, thereby improving production efficiency and reducing costs.

CN224227262UActive Publication Date: 2026-05-12SUZHOU KZONE EQUIP TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU KZONE EQUIP TECH
Filing Date
2025-06-11
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing horizontal electroplating technology has problems in photovoltaic cell manufacturing, such as poor uniformity and the need for additional edge protection processes, which leads to complex processes and increased costs.

Method used

The design employs a spray disc assembly and a brush assembly. The spray disc assembly forms a liquid flow channel through the anode plate and the return liquid pipe. The brush assembly works with the carrier plate to clamp the battery cells, ensuring uniform coverage and stable recovery of the liquid. The anode plate connects to the anode to provide a conductive path, and the brush assembly connects to the cathode to form a stable closed circuit.

Benefits of technology

This improved the uniformity and stability of the electroplating process, reduced production costs, and enhanced electroplating quality and efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of electroplating, and discloses a battery piece electroplating device. A spraying disc body of the device comprises a first carrying plate and a second carrying plate which are arranged at intervals in the vertical direction, a plurality of liquid spraying holes and a plurality of first liquid returning holes are formed in the first carrying plate, a plurality of second liquid returning holes are formed in the second carrying plate, and an anode plate is fixedly arranged in an inner cavity of the spraying disc body and divides the inner cavity into a first cavity and a second cavity. A plurality of first liquid inlet holes are formed in the anode plate, a second liquid inlet hole communicated with the second cavity is formed in the spraying disc body, the liquid return pipeline penetrates through the first liquid inlet holes, the two ends of the liquid return pipeline are communicated with the first liquid return hole and the second liquid return hole respectively, and the hole diameter of the second liquid inlet hole is larger than the outer diameter of the liquid return pipeline; a liquid medicine flowing channel is formed between the second cavity and the first cavity; the brush assembly comprises a conductive brush arranged opposite to the first carrier plate and communicated with the cathode, and the conductive brush is used for being matched with the first carrier plate to clamp the battery piece. According to the device, the electroplating uniformity and stability of the battery piece can be improved, and the production cost is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of electroplating technology, and in particular to a battery cell electroplating device. Background Technology

[0002] Photovoltaic cells, capable of converting solar energy into electricity—a clean and renewable resource—are increasingly important in the new energy field. Current photovoltaic cell manufacturing primarily uses silver paste to prepare electrodes, resulting in high costs, low production capacity, and difficulty in achieving precision, thus affecting photoelectric conversion efficiency and performance stability. Therefore, using low-cost metals to replace silver paste is an urgent industry need, and photovoltaic cell grid line electroplating technology has emerged as a new direction for reducing silver paste usage.

[0003] Currently, horizontal electroplating is performed during the transport of solar cells. The cathode surface needs to constantly switch its contact position, causing continuous fluctuations in the resistance of the back contact, making it difficult to ensure plating uniformity. Furthermore, this method requires additional edge protection processes, increasing both process complexity and cost. Utility Model Content

[0004] The purpose of this invention is to provide a battery cell electroplating device to solve the problems of poor uniformity in existing horizontal electroplating, the need for additional edge protection processes that lead to complex processes and increased costs, and to improve electroplating uniformity and stability while reducing production costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A battery cell electroplating apparatus, comprising:

[0007] A spray disc assembly includes a spray disc body, an anode plate, and multiple return pipes. The spray disc body includes a first carrier plate and a second carrier plate arranged vertically at intervals. The first carrier plate has multiple spray holes and multiple first return holes, and the second carrier plate has multiple second return holes. The anode plate is fixedly disposed in the inner cavity of the spray disc body and divides the inner cavity into a first chamber and a second chamber. The first chamber is located between the anode plate and the first carrier plate, and the second chamber is located between the anode plate and the second carrier plate. The anode plate has multiple first inlet holes, and the spray disc body has a second inlet hole communicating with the second chamber. The return pipes pass through the first inlet holes and are connected at both ends to the first return hole and the second return hole, respectively. The diameter of the first inlet hole is larger than the outer diameter of the return pipe to form a liquid flow channel between the second chamber and the first chamber.

[0008] A brush assembly, comprising a conductive brush connected to a cathode and disposed opposite to a first carrier plate, for engaging with the first carrier plate to clamp a battery cell.

[0009] As an alternative to the battery cell electroplating apparatus, the diameter of the first return liquid hole is larger than the diameter of the spray liquid hole.

[0010] As an alternative to a battery cell electroplating device, multiple first return liquid holes are arranged at equal intervals, and each first return liquid hole is surrounded by multiple spray holes.

[0011] As an alternative to the battery cell electroplating apparatus, the first carrier plate is provided with a plurality of spray pipes on the side near the battery cell. One end face of the spray pipe can abut against the battery cell, and the other end of the spray pipe is connected to the spray hole.

[0012] As an alternative to the battery cell electroplating device, the brush assembly also includes a fixing plate, and a plurality of conductive brushes are equally spaced on the side of the fixing plate facing the spray plate assembly, and the angle between the extension direction of the brush bristles and the end face of the battery cell is 0-60 degrees.

[0013] As an alternative to a battery cell electroplating apparatus, each bristle of the conductive brush has a diameter of 20 micrometers to 120 micrometers.

[0014] As an alternative to the battery cell electroplating apparatus, the fixing plate includes a fastener and an adjusting part. The adjusting part has a mounting hole and an adjusting hole, with the adjusting hole surrounding the mounting hole. Both ends of the conductive brush are provided with rotating shafts, which are rotatably connected to the mounting hole. The fastener passes through the adjusting hole and is connected to the conductive brush. When the conductive brush rotates relative to the adjusting part, the fastener can slide within the adjusting hole. The fastener is configured to lock the relative position between the conductive brush and the adjusting part.

[0015] As an alternative to the battery cell electroplating apparatus, the spray plate assembly also includes a frame-structured limiting plate disposed along the circumferential outer edge of the upper surface of the first carrier plate.

[0016] As an alternative to the battery cell electroplating device, the inner side of the limiting plate is provided with a limiting block that can abut against the battery cell.

[0017] As an alternative to the battery cell electroplating apparatus, the battery cell electroplating apparatus further includes a lifting member for driving the brush assembly to abut or release from the battery cell.

[0018] Beneficial effects:

[0019] This invention provides a battery cell electroplating device. In the spray plate assembly, the chemical solution flows into the second chamber through the second inlet hole. After filling, it flows into the first chamber through the first inlet hole on the anode plate, which has a diameter larger than the outer diameter of the return pipe. Then, it is sprayed out from the spray hole on the first carrier plate to cover the surface of the battery cell to be electroplated, ensuring smooth circulation of the chemical solution and achieving uniform coverage. This avoids uneven local electroplating of the battery cell and effectively improves the uniformity and quality of the electroplating. At the same time, multiple return pipes are installed through the first inlet hole, with their two ends connected to the first return hole and the second return hole, respectively. This allows for timely recovery of excess chemical solution, reducing waste and costs, maintaining a stable level and concentration of chemical solution on the surface of the first carrier plate, and ensuring the stability of the electroplating process. The anode plate is connected to the anode and makes the flowing chemical solution conductive. The conductive brush of the brush assembly is connected to the cathode and cooperates with the first carrier plate to clamp the battery cell, ensuring stable contact of the battery cell during the electroplating process and providing a guarantee for the formation of a stable closed circuit, thereby further improving the electroplating effect and efficiency. Attached Figure Description

[0020] Figure 1 This is a first schematic diagram of the battery cell electroplating apparatus provided in this embodiment of the present invention;

[0021] Figure 2 This is a second schematic diagram of the battery cell electroplating apparatus provided in this embodiment of the present invention;

[0022] Figure 3 This is a first schematic diagram of the spray disc assembly provided in this embodiment of the present utility model;

[0023] Figure 4 yes Figure 3 Cross-sectional view at position AA;

[0024] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is a second schematic diagram of the spray disc assembly provided in this embodiment of the present invention;

[0026] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0027] Figure 8 This is a structural schematic diagram of the brush assembly and lifting component provided in this embodiment of the utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the brush assembly provided in this embodiment of the utility model;

[0029] Figure 10 This is a third schematic diagram of the spray disc assembly provided in this embodiment of the present utility model.

[0030] In the picture:

[0031] 100. Battery cells;

[0032] 1. Spray disc assembly; 11. Spray disc body; 12. Anode plate; 13. Return liquid pipe; 14. First chamber; 15. Second chamber; 16. Limiting plate; 111. First carrier plate; 112. Second carrier plate; 113. Spraying pipe; 1111. Spray hole; 1112. First return liquid hole; 1121. Second return liquid hole; 121. First inlet hole; 161. Limiting block;

[0033] 2. Brush assembly; 21. Electric brush; 22. Fixing plate; 221. Adjustment part; 222. Fastener; 2211. Mounting hole; 2212. Adjustment hole;

[0034] 3. Lifting components. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] This embodiment provides a battery cell electroplating apparatus, such as... Figures 1-10 As shown, the battery cell electroplating apparatus includes a spray plate assembly 1 and a brush assembly 2. The spray plate assembly 1 includes a spray plate body 11, an anode plate 12, and multiple return liquid pipes 13. The spray plate body 11 includes a first carrier plate 111 and a second carrier plate 112 arranged vertically at intervals. The first carrier plate 111 is provided with multiple spray holes 1111 and multiple first return liquid holes 1112. The second carrier plate 112 is provided with multiple second return liquid holes 1121. The anode plate 12 is fixedly disposed in the inner cavity of the spray plate body 11, dividing the inner cavity into a first chamber 14 and a second chamber 15. The first chamber 14 is located between the anode plate 12 and the first carrier plate 111, and the second chamber 15... Located between the anode plate 12 and the second carrier plate 112, the anode plate 12 is provided with a plurality of first liquid inlet holes 121, the spray disc body 11 is provided with a second liquid inlet hole communicating with the second chamber 15, the return liquid pipe 13 passes through the first liquid inlet hole 121 and its two ends are respectively connected to the first return liquid hole 1112 and the second return liquid hole 1121, the diameter of the first liquid inlet hole 121 is larger than the outer diameter of the return liquid pipe 13, so as to form a liquid flow channel between the second chamber 15 and the first chamber 14; the brush assembly 2 includes a conductive brush 21, the conductive brush 21 is connected to the cathode and is arranged opposite to the first carrier plate 111, and is used to cooperate with the first carrier plate 111 to clamp the battery cell 100.

[0040] In the spray plate assembly 1, the liquid solution flows into the second chamber 15 through the second inlet hole. After filling, it flows into the first chamber 14 through the first inlet hole 121 on the anode plate 12, which has a diameter larger than the outer diameter of the return pipe 13. Then, it is sprayed out from the spray hole 1111 of the first carrier plate 111 to cover the surface of the battery cell 100 that needs to be electroplated, ensuring smooth circulation of the liquid solution, achieving uniform coverage, avoiding uneven local electroplating of the battery cell 100, and effectively improving the uniformity and quality of the electroplating of the battery cell 100. At the same time, multiple return pipes 13 are inserted through the first inlet hole 121, and their two ends are respectively connected to the first return pipe. Hole 1112 and second return liquid hole 1121 can promptly recover excess solution, reduce waste and lower costs, maintain a stable solution level and concentration on the surface of the first carrier plate 111, and ensure the stability of the electroplating process. The anode plate 12 is connected to the anode and makes the flowing solution conductive (the anode plate 12 is made of titanium). The conductive brush 21 of the brush assembly 2 is connected to the cathode and cooperates with the first carrier plate 111 to clamp the battery cell 100, which can ensure stable contact of the battery cell 100 during the electroplating process, provide a guarantee for the formation of a stable closed circuit, and thus further improve the electroplating effect and efficiency.

[0041] Specifically, the surface of the battery cell 100 that needs to be electroplated is the side of the battery cell 100 facing the spray plate assembly 1. Only the surface of the battery cell 100 that needs to be electroplated is covered with the liquid medicine, and the other side of the battery cell 100 that contacts the brush is not in contact with the liquid medicine.

[0042] like Figure 3 , Figure 6 and Figure 7 As shown, the diameter of the first return hole 1112 is larger than the diameter of the spray hole 1111. The main function of the spray hole 1111 is to evenly spray the solution onto the surface of the battery cell 100 to be electroplated. Its relatively small diameter ensures that the solution is sprayed out at a suitable pressure and flow rate to achieve uniform coverage. The larger diameter of the first return hole 1112 can promptly recover excess solution, balancing the inflow and outflow. This effectively prevents excessive accumulation of solution on the surface of the first carrier plate 111 and the surface of the battery cell 100, ensuring uniform solution thickness on the surface of the battery cell 100 during electroplating and thus improving the uniformity of electroplating.

[0043] like Figure 3 , Figure 6 and Figure 7As shown, multiple first return holes 1112 are arranged at equal intervals, and each first return hole 1112 is surrounded by multiple spray holes 1111. The equal intervals between the multiple first return holes 1112 ensure that the chemical solution is evenly distributed on the surface of the battery cell 100 to be electroplated, avoiding localized areas with excessive or insufficient chemical solution, thereby significantly improving the uniformity of electroplating and ensuring consistent electroplating quality across all parts of the battery cell 100. The equally spaced first return holes 1112 can promptly and evenly recover excess chemical solution, and together with the surrounding spray holes 1111, allow the chemical solution to form an efficient and stable circulation within the device, reducing chemical solution waste and lowering production costs. In this embodiment, each first return hole 1112 is surrounded by four spray holes 1111.

[0044] like Figure 6 and Figure 7 As shown, the first carrier plate 111 has multiple spray pipes 113 on the side near the battery cell 100. One end of each spray pipe 113 can abut against the battery cell 100, and the other end of each spray pipe 113 is connected to a spray hole 1111. The contact surface between the spray pipe 113 and the battery cell 100 is slightly higher than the upper surface of the first carrier plate 111, which avoids direct contact and friction between the first carrier plate 111 and the battery cell 100, thus preventing damage to the surface of the battery cell 100. In addition, the multiple spray pipes 113 are evenly distributed, and with the height difference design, the liquid can more evenly cover the surface of the battery cell 100, avoiding local liquid accumulation or insufficient liquid, thereby improving the uniformity and consistency of electroplating and ensuring the electroplating quality of the battery cell 100.

[0045] like Figure 8 and Figure 9 As shown, the brush assembly 2 also includes a fixing plate 22. Multiple conductive brushes 21 are evenly spaced on the side of the fixing plate 22 facing the spray plate assembly 1, and the angle between the extension direction of the brush bristles of the conductive brushes 21 and the end face of the battery cell 100 is 0-60 degrees. The evenly spaced arrangement of the conductive brushes 21 ensures uniform pressure applied to the battery cell 100, avoiding deformation or damage to the battery cell 100 caused by uneven local stress. The inclined arrangement of the conductive brushes 21 ensures sufficient contact between the conductive bristles and the battery cell 100 to form a stable conductive path, and the contact area and pressure can be controlled by adjusting the angle, preventing excessive pressure from damaging the battery cell 100. Furthermore, this design enhances the applicability of the battery cell electroplating device. By adjusting the angle, it can adapt to the electroplating requirements of battery cells 100 of different thicknesses and materials, reducing the equipment's limitations on the specifications of the battery cell 100 and improving electroplating efficiency and product yield.

[0046] Furthermore, the diameter of each bristle in the conductive brush 21 is between 20 and 120 micrometers. This diameter range provides the bristles with moderate softness and elasticity, allowing them to adhere closely to the surface of the battery cell 100, ensuring good conductivity, while preventing scratches to the battery cell 100 due to excessively stiff bristles. Simultaneously, the suitable bristle diameter creates a uniform contact pressure distribution, ensuring balanced current conduction across all areas of the battery cell 100 surface and improving electroplating uniformity. Specifically, the conductive brush 21 is made of a conductive and corrosion-resistant material, such as titanium plated with platinum or titanium plated with iridium.

[0047] like Figure 9 As shown, the fixing plate 22 includes a fastener 222 and an adjusting part 221. The adjusting part 221 has a mounting hole 2211 and an adjusting hole 2212, with the adjusting hole 2212 surrounding the mounting hole 2211. Both ends of the conductive brush 21 have rotating shafts, which are rotatably connected to the mounting hole 2211. The fastener 222 passes through the adjusting hole 2212 and is connected to the conductive brush 21. When the conductive brush 21 rotates relative to the adjusting part 221, the fastener 222 can slide within the adjusting hole 2212. The fastener 222 is configured to lock the relative position between the conductive brush 21 and the adjusting part 221. The design of the fastener 222 and the adjusting part 221 of the fixing plate 22, through the cooperation of the mounting hole 2211, the adjusting hole 2212, and the rotating shaft of the conductive brush 21, allows for flexible adjustment of the angle of the conductive brush 21, adapting to the electroplating requirements of different battery cells 100. After the angle is adjusted, fastener 222 can be locked in place to prevent the brush from shifting during electroplating, ensuring stable contact and uniform current conduction. At the same time, this structure facilitates disassembly and maintenance, reducing equipment maintenance difficulty and improving production efficiency. Specifically, fastener 222 is made of screws or bolts.

[0048] like Figure 10 As shown, the spray plate assembly 1 also includes a frame-structured limiting plate 16, which is disposed along the circumferential outer edge of the upper surface of the first carrier plate 111. The limiting plate 16 provides a precise placement boundary for the battery cell 100, preventing it from shifting or misaligning during electroplating. This ensures accurate relative positioning of the battery cell 100 with the spray pipe 113 and the conductive brush 21, thereby guaranteeing the consistency of the electroplating area and the stability of the electroplating effect. Furthermore, the frame structure of the limiting plate 16 prevents splashed chemicals from spreading outwards, avoiding chemical spillage that could corrode other equipment components or contaminate the working environment. Specifically, the limiting plate 16 is bolted to the spray plate body 11.

[0049] like Figure 10As shown, a limiting block 161 is provided at intervals on the inner side of the limiting plate 16, and the limiting block 161 can abut against the battery cell 100. The limiting block 161 abuts against the battery cell 100, and the multi-point contact forms a precise limiting constraint, which effectively prevents the battery cell 100 from being displaced due to placement deviation or external force during the electroplating process, and ensures that the relative position of the battery cell 100, the spray pipe 113, and the conductive brush 21 is constant, providing a prerequisite for uniform electroplating. In addition, the limiting block 161 limits the lowest position of the brush assembly 2's descent, preventing the conductive brush 21 from applying excessive pressure to the battery cell 100, avoiding deformation or damage to the battery cell 100 due to force, and also ensuring that the brush bristles and the battery cell 100 maintain a reasonable contact pressure, which ensures good conductivity and prevents excessive pressure from affecting the electroplating effect and the quality of the battery cell 100, thereby improving the yield and stability of electroplating production.

[0050] like Figure 1 , Figure 2 and Figure 8 As shown, the battery cell electroplating device also includes a lifting component 3, which is used to drive the brush assembly 2 to contact or release from contact with the battery cell 100. During the loading and unloading phases of the battery cell 100, the lifting component 3 can drive the brush assembly 2 to rise and release from contact, leaving sufficient space for the battery cell 100 to be picked up and placed, avoiding collision damage; while during the electroplating operation, the brush assembly 2 is precisely controlled to descend, so that it reliably contacts the battery cell 100, forming a stable conductive path and ensuring the smooth progress of the electroplating reaction. Specifically, the lifting component 3 can be a linear module, a cylinder, an electric actuator, or a lead screw drive assembly, etc.

[0051] The working process of the battery cell electroplating apparatus in this embodiment is roughly as follows:

[0052] First, the lifting component 3 drives the brush assembly 2 to rise, providing space for the placement of the battery cell 100. The battery cell 100 is placed on the spray disc body 11, and the limiting block 161 limits the battery cell 100 around its perimeter to ensure that the battery cell 100 is in the appropriate position.

[0053] Next, the lifting component 3 drives the brush component 2 to descend, so that the conductive brush 21 comes into contact with the battery cell 100 at a set angle (0-60 degrees) and pressure, forming a stable conductive path.

[0054] Subsequently, the chemical solution is precisely sprayed through the spray pipe 113 onto the surface of the battery cell 100 that needs to be electroplated, forming a stable closed circuit. After electroplating is completed, the lifting assembly 3 raises the brush assembly 2 again to facilitate the removal of the electroplated battery cell 100 for the next round of electroplating.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery cell electroplating apparatus, characterized in that, include: A spray disc assembly (1) includes a spray disc body (11), an anode plate (12), and multiple return pipes (13). The spray disc body (11) includes a first carrier plate (111) and a second carrier plate (112) arranged at intervals along the vertical direction. The first carrier plate (111) is provided with multiple spray holes (1111) and multiple first return holes (1112). The second carrier plate (112) is provided with multiple second return holes (1121). The anode plate (12) is fixedly disposed in the inner cavity of the spray disc body (11) and divides the inner cavity into a first chamber (14) and a second chamber (15). The first chamber (14) is located on the anode plate (12). Between the first carrier plate (111) and the second carrier plate (12), the second chamber (15) is located between the anode plate (12) and the second carrier plate (112). The anode plate (12) is provided with a plurality of first liquid inlet holes (121). The spray disc body (11) is provided with a second liquid inlet hole that communicates with the second chamber (15). The return pipe (13) passes through the first liquid inlet hole (121) and its two ends are respectively connected to the first return pipe (1112) and the second return pipe (1121). The diameter of the first liquid inlet hole (121) is larger than the outer diameter of the return pipe (13) to form a liquid flow channel between the second chamber (15) and the first chamber (14). The brush assembly (2) includes a conductive brush (21) that is connected to the cathode and is disposed opposite to the first carrier plate (111) for cooperating with the first carrier plate (111) to clamp the battery cell (100).

2. The battery cell electroplating apparatus according to claim 1, characterized in that, The diameter of the first return hole (1112) is larger than the diameter of the spray hole (1111).

3. The battery cell electroplating apparatus according to claim 1, characterized in that, Multiple first return holes (1112) are arranged at equal intervals, and multiple spray holes (1111) are arranged around each first return hole (1112).

4. The battery cell electroplating apparatus according to claim 1, characterized in that, The first carrier plate (111) has a plurality of liquid spraying pipes (113) on the side near the battery cell (100). One end face of the liquid spraying pipe (113) can abut against the battery cell (100), and the other end of the liquid spraying pipe (113) is connected to the liquid spraying hole (1111).

5. The battery cell electroplating apparatus according to claim 1, characterized in that, The brush assembly (2) further includes a fixing plate (22), and a plurality of conductive brushes (21) are equally spaced on the side of the fixing plate (22) facing the spray disc assembly (1), and the angle between the extension direction of the bristles of the conductive brushes (21) and the end face of the battery cell (100) is 0-60 degrees.

6. The battery cell electroplating apparatus according to claim 5, characterized in that, The diameter of each bristle of the conductive brush (21) is 20 micrometers to 120 micrometers.

7. The battery cell electroplating apparatus according to claim 5, characterized in that, The fixing plate (22) includes a fastener (222) and an adjusting part (221). The adjusting part (221) is provided with a mounting hole (2211) and an adjusting hole (2212). The adjusting hole (2212) surrounds the mounting hole (2211). Both ends of the conductive brush (21) are provided with a rotating shaft. The rotating shaft is rotatably connected to the mounting hole (2211). The fastener (222) passes through the adjusting hole (2212) and is connected to the conductive brush (21). When the conductive brush (21) rotates relative to the adjusting part (221), the fastener (222) can slide in the adjusting hole (2212). The fastener (222) is configured to lock the relative position between the conductive brush (21) and the adjusting part (221).

8. The battery cell electroplating apparatus according to claim 1, characterized in that, The spray disc assembly (1) also includes a limiting plate (16) in the form of a frame structure, the limiting plate (16) being disposed along the circumferential outer edge of the upper surface of the first carrier plate (111).

9. The battery cell electroplating apparatus according to claim 8, characterized in that, The limiting plate (16) is provided with a limiting block (161) at intervals on its inner side, and the limiting block (161) can abut against the battery cell (100).

10. The battery cell electroplating apparatus according to any one of claims 1-9, characterized in that, The battery cell electroplating device further includes a lifting component (3), which is used to drive the brush assembly (2) to abut or release from abutment of the battery cell (100).