Horizontal electroplating device

Abstract

The utility model provides a horizontal electroplating device, which comprises an electroplating bath, an anode, an isolation groove, an adsorption transmission roller and a cathode conductive brush, the cathode conductive brush comprises a conductive contact part, the conductive contact part comprises a conductive wire and an insulation wire which are mixed and woven, and the second end of the conductive contact part is an arc tip. Enough yield strength can be provided through the mixed conductive wires and the insulation wires, so that the cathode conductive brush can be in good contact with a battery piece, the electroplating uniformity is improved, the cathode conductive brush is convenient to install, the time efficiency can be saved, and the damage to the battery piece can be effectively avoided through the arc tip; and through the arrangement of the adsorption transmission roller, the residual electroplating liquid on the surface of the battery piece can be effectively removed, the probability that the cathode conductive brush located on the screwing-out side of the adsorption transmission roller is electroplated is further reduced, the service life of the cathode conductive brush is prolonged, and the cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electroplating and relates to a horizontal electroplating device. Background Technology

[0002] With the continuous expansion of the photovoltaic industry and the rapid development of the market, increasingly higher demands are being placed on the manufacturing price, process complexity, and quality of photovoltaic cells. After texturing and diffusion processes, solar cells can generate current under sunlight. To conduct this current, electrodes need to be fabricated on the surface of the cell. Existing methods for manufacturing electrodes mainly include screen printing and electroplating. Screen printing involves printing metals such as silver onto the surface of the cell using an imprinting method, and finally sintering to form conductive grid lines, which constitute the electrodes of the solar cell. This method is costly, and it is difficult to achieve fine linewidths in the prepared electrodes, making it difficult to improve the cell's light absorption rate. Therefore, electroplating, which offers low cost, fine linewidths, and high light absorption rate, is widely used.

[0003] Photovoltaic electroplating processes are mainly divided into two types: rack plating (fixture-based) and horizontal plating (fixtureless). Rack plating often introduces risks to the plating layer due to the fixture, requiring frequent fixture changes and stripping of the plating layer. This results in cumbersome processes and increased equipment investment and labor costs. Existing horizontal plating methods often use conductive wires or conductive adhesives. When using conductive wires, problems arise such as poor plating consistency, numerous surface scratches on the solar cells, difficulty in securing the conductive wires, and time-consuming installation. When using conductive adhesives, problems include poor plating consistency, high material consumption, high requirements for equipment automation, and time-consuming installation.

[0004] Therefore, it is necessary to provide a horizontal electroplating apparatus. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a horizontal electroplating device to solve the production and product quality problems existing in the prior art when performing horizontal plating.

[0006] To achieve the above and other related objectives, this utility model provides a horizontal electroplating apparatus, the horizontal electroplating apparatus comprising:

[0007] Electroplating tank;

[0008] Anode, wherein the anode is disposed within the electroplating tank;

[0009] An isolation tank is provided inside the electroplating tank, through which the electroplating solution located in the electroplating tank is returned;

[0010] An adsorption transfer roller is disposed in the isolation groove, and the surface of the adsorption transfer roller is covered with an adsorption layer, which adsorbs residual electroplating liquid on the surface of the battery cell located on the adsorption transfer roller.

[0011] A cathode conductive brush is disposed within the isolation groove and on the rotating side of the adsorption and transfer roller. The cathode conductive brush includes a conductive fixing part and a conductive contact part. The conductive contact part includes conductive wires and insulating wires, with the conductive wires and insulating wires being interwoven. The conductive contact part includes a first end and a second end disposed opposite to each other. The first end of the conductive contact part is fixed to the conductive fixing part and electrically connected to the conductive fixing part. The second end of the conductive contact part is a rounded tip. An angle exists between the conductive contact part and the conductive fixing part.

[0012] Optionally, the adsorption layer comprises one or more of a sponge layer or a hollow fiber ultrafiltration membrane.

[0013] Optionally, the isolation tank includes an inner isolation tank and an outer isolation tank located around the inner isolation tank, and the electroplating solution located in the electroplating tank is returned through the outer isolation tank, and the adsorption transfer roller and the cathode conductive brush are both located in the inner isolation tank.

[0014] Optionally, the yield strength of the conductive contact is 400–1000 MPa; the conductivity of the conductive contact is 10 × 10⁻⁶ MPa. 6 S / m or higher.

[0015] Optionally, the second end of the conductive contact protrudes from the upper surface of the adsorption and transfer roller, with a protrusion distance of 1 to 5 mm.

[0016] Optionally, the conductive wire includes one or a combination of metal wire and carbon-based fiber; the insulating wire includes one or a combination of PP wire, PVC wire and PE wire.

[0017] Optionally, the conductive fixing part includes a metal clip, a metal sheet, or a metal roller; the fixing method between the conductive fixing part and the conductive contact part includes one or a combination of threaded connection, snap-fit ​​connection, mechanical clamping connection, welding, and tenon joint connection; the conductive fixing part is also provided with an insulating capillary tube, and the first end of the conductive contact part passes through the insulating capillary tube and is electrically connected to the conductive fixing part.

[0018] Optionally, the second end of the conductive contact portion has a colloidal coating layer, through which the arcuate tip is formed, and / or the arcuate tip is formed by melting the second end of the conductive contact portion.

[0019] Optionally, the included angle between the conductive contact portion and the conductive fixing portion is in the range of 30° to 150°.

[0020] Optionally, the same conductive contact portion has a first end of one conductive contact portion and a second end of N>1 conductive contact portions; the conductive fixing portion is provided with M>1 conductive contact portions, and the distribution shape of the M conductive contact portions includes one or a combination of linear and curved shapes.

[0021] As described above, the horizontal electroplating apparatus of this utility model includes an electroplating tank, an anode, an isolation tank, an adsorption and transfer roller, and a cathode conductive brush. The cathode conductive brush includes a conductive fixing part and a conductive contact part. The conductive contact part includes a mixed-braided conductive wire and an insulating wire. The conductive contact part has a first end and a second end arranged opposite to each other. The first end of the conductive contact part is fixed to the conductive fixing part and electrically connected to the conductive fixing part. The second end of the conductive contact part is a rounded tip. There is an angle between the conductive contact part and the conductive fixing part. The mixed-braided conductive wire and the insulating wire provide sufficient yield strength, allowing the cathode conductive brush to make good contact with the battery cell, improving the electroplating uniformity, facilitating installation, saving time, and the rounded tip can effectively avoid damage to the battery cell. Furthermore, when the cathode conductive brush is electroplated through the contact area of ​​the second end adjacent to the conductive contact part, the probability of the cathode conductive brush being electroplated by the electroplating solution can be further reduced, extending its service life and reducing costs. By setting the adsorption transfer roller, the residual electroplating solution on the surface of the battery cell can be effectively removed, further reducing the probability of the cathode conductive brush located on the rotating side of the adsorption transfer roller being electroplated, extending the service life of the cathode conductive brush and reducing costs. Attached Figure Description

[0022] Figure 1 The diagram shown is a schematic diagram of the cathode conductive brush in Embodiment 1 of this utility model.

[0023] Figure 2a The diagram shows a schematic of the conductive contact portion with a rounded tip obtained after melting treatment in Embodiment 1 of this utility model.

[0024] Figure 2b Displayed as Figure 2a A side view structural diagram.

[0025] Figure 3 The diagram shows a schematic representation of the conductive contact portion with a rounded tip and a colloidal coating layer in Embodiment 1 of this utility model.

[0026] Figure 4 The diagram shown is a structural schematic of the conductive contact portion with an insulating capillary in Embodiment 1 of this utility model.

[0027] Figure 5The diagram shown is a structural schematic of the conductive contact portion at the second end of the present invention, which has two conductive contact portions, according to Embodiment 1 of this utility model.

[0028] Figure 6 The diagram shows a schematic of the structure of a cathode conductive brush with eight conductive contacts in Embodiment 1 of this utility model.

[0029] Figure 7 The image shown is an illustration of the effect of electroplating using only conductive wires as conductive contacts in Embodiment 1 of this utility model.

[0030] Figure 8 The image shown is an illustration of the effect after electroplating the hybrid conductive contact parts in Embodiment 1 of this utility model.

[0031] Figure 9 The diagram shown is a schematic diagram of the horizontal electroplating device in Embodiment 2 of this utility model.

[0032] Figure 10 The diagram shown is a schematic representation of the structure of a horizontal electroplating device with an inner isolation tank and an outer isolation tank in Embodiment 2 of this utility model.

[0033] Explanation of reference numerals in the attached figures

[0034] 100 Cathode Conductive Brush

[0035] 110 Conductive fixing part

[0036] 120 conductive contact

[0037] 121 conductive wire

[0038] 122 insulation wire

[0039] The first end of the 120a conductive contact

[0040] The second end of the 120b conductive contact

[0041] 120c conductive contact part contact area

[0042] 130 colloidal coating layer

[0043] 140 Insulating Capillary

[0044] 200 electroplating tank

[0045] 300 anode

[0046] 400 isolation tank

[0047] 410 Isolation Inner Tank

[0048] 420 isolation tank

[0049] 500 Adsorption Transfer Rollers

[0050] 510 adsorption layer

[0051] 600 power supply

[0052] 700 battery cells

[0053] 800 scratches Detailed Implementation

[0054] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0055] In the detailed description of the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the structure may be partially enlarged without adhering to the general scale, and the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. Furthermore, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0056] For ease of description, spatial relation terms such as “below,” “under,” “lower than,” “below,” “above,” and “upper” may be used herein to describe the relationship between one element or feature shown in the accompanying drawings and other elements or features. It will be understood that these spatial relation terms are intended to include orientations of the device in use or operation other than those depicted in the drawings, and may include embodiments in which the first and second features are formed in direct contact, or embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Furthermore, when a layer is referred to as “between” two layers, it may be the only layer between the two layers, or there may be one or more layers in between.

[0057] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0058] Example 1

[0059] See Figure 1 , Figure 2a and Figure 2b This embodiment provides a cathode conductive brush 100, which includes:

[0060] Conductive fixing part 110;

[0061] The conductive contact 120 includes a conductive wire 121 and an insulating wire 122, wherein the conductive wire 121 and the insulating wire 122 are interwoven. The conductive contact 120 includes a first end 120a and a second end 120b disposed opposite to each other. The first end 120a of the conductive contact 120 is fixed to the conductive fixing part 110 and electrically connected to the conductive fixing part 110. The second end 120b of the conductive contact 120 is an arc-shaped tip. There is an included angle θ between the conductive contact 120 and the conductive fixing part 110.

[0062] The cathode conductive brush 100 of this embodiment can provide sufficient yield strength through the mixed-braided conductive wires 121 and insulating wires 122, so that the cathode conductive brush 100 can make good contact with the battery cell, improve the electroplating uniformity, facilitate installation, save time, and the rounded tip can effectively avoid damage to the battery cell.

[0063] For details, please refer to Figure 2a and Figure 2b The braiding method of the conductive wire 121 and the insulating wire 122 can include braided weaving, net-like weaving, rope-like weaving, etc. No excessive restrictions are placed here regarding the braiding method of the conductive wire 121 and the insulating wire 122. The conductive wire 121 primarily functions to conduct electricity, and also provides some support. The insulating wire 122 primarily functions to provide support. Through the braiding of the insulating wire 122 and the conductive wire 121, the conductive contact portion 120 can achieve good yield strength.

[0064] The conductive wire 121 can have a diameter of 0.01mm to 5mm, such as 0.01mm, 0.05mm, 0.1mm, 1mm, 2.5mm, 5mm, etc., and the insulating wire 122 can have a diameter of 0.01mm to 5mm, such as 0.01mm, 0.05mm, 0.1mm, 1mm, 2.5mm, 5mm, etc. The diameters of the conductive wire 121 and the insulating wire 122 can be adjusted according to the current.

[0065] As an example, the yield strength of the conductive contact 120 can be 400 to 1000 MPa, such as 400 MPa, 450 MPa, 480 MPa, 500 MPa, 520 MPa, 550 MPa, 1000 MPa, etc., to provide sufficient yield strength for easy application.

[0066] Specifically, when the yield strength of the conductive contact portion 120 is 400-1000 MPa, on the one hand, it allows the cathode conductive brush 100 to make good contact with the battery cell, improving the uniformity of electroplating, facilitating installation, and saving time. On the other hand, when the conductive contact portion 120 contacts the battery cell, the conductive contact portion 120 with this yield strength can swing when the battery cell leaves the conductive contact portion 120, effectively removing the electroplating solution remaining on the surface of the conductive contact portion 120 due to contact with the battery cell. This reduces the probability of the cathode conductive brush 100 being electroplated by the electroplating solution, extends its service life, reduces costs, reduces replacement frequency, saves time, and increases production capacity.

[0067] As an example, the conductivity of the conductive contact 120 may be 10 × 10⁻⁶. 6 S / m or higher, such as 10×10 6 S / m, 12×10 6 S / m, 14×10 6 S / m, etc., to meet electrical requirements.

[0068] As an example, the conductive wire 121 may include one or a combination of metal wire and carbon-based fiber; the insulating wire 122 may include one or a combination of PP wire, PVC wire and PE wire.

[0069] Specifically, the conductive wire 121 can be made of one or more of the following materials: brass, pure copper, nickel, titanium, silver, gold, etc. Of course, depending on the needs, the conductive wire 121 may also include carbon-based fibers, or a combination of carbon-based fibers and metal wires. The insulating wire 122 may include one or a combination of PP wire, PVC wire, and PE wire.

[0070] As an example, the conductive fixing part 110 may include a metal clip, a metal sheet, or a metal roller, etc. The specific type of the conductive fixing part 110 can be selected as needed. The conductive fixing part 110 can fix the conductive contact part 120, and the conductive fixing part 110 is conductive, so it can be electrically connected to a power source to supply power to the conductive contact part 120.

[0071] The fixing method between the conductive fixing part 110 and the conductive contact part 120 may include one or a combination of threaded connection, snap-fit ​​connection, mechanical clamping connection, welding and tenon joint connection. No excessive restrictions are placed here regarding the fixing method between the conductive fixing part 110 and the conductive contact part 120. Because the conductive contact part 120 has the insulating wire 122 that provides support, it has a certain yield strength, which facilitates installation.

[0072] As an example, an insulating capillary tube 140 may also be provided on the conductive fixing part 110, and the first end 120a of the conductive contact part 120 passes through the insulating capillary tube 140 and is electrically connected to the conductive fixing part 110.

[0073] For details, please refer to Figure 4 When the insulating capillary tube 140 is provided, the supporting effect of the conductive contact portion 120 can be further improved, which facilitates the fixing of the conductive contact portion 120 and the conductive fixing portion 110.

[0074] As an example, see Figure 3 The second end 120b of the conductive contact portion 120 may have a colloidal coating layer 130, through which the arcuate tip is formed, and / or the arcuate tip is formed by melting the second end 120b of the conductive contact portion 120.

[0075] For details, please refer to Figure 7 In contrast, this embodiment provides a structural diagram and an effect diagram after electroplating, showing that only conductive wires are used as conductive contacts for electroplating. Figure 7 It is known that when only conductive wires are used as conductive contacts, the direct contact between the sharp conductive wires and the battery cells will leave many scratches on the metal surface of the battery cells. During the installation of conductive wires, there will also be problems such as difficulty in installation and time-consuming installation. During electroplating, the contact stability between the conductive wires and the battery cells is not good, resulting in poor consistency of the thin film electroplated on the battery cells.

[0076] In this embodiment, see Figure 8 The diagram illustrates the effect of electroplating a battery cell using a hybrid conductive contact portion 120 with a rounded tip. Because the second end 120b of the conductive contact portion 120 has a rounded tip, scratches 800 are effectively reduced on the surface of the battery cell during electroplating, thus effectively minimizing damage to the battery cell.

[0077] The rounded tip can be achieved by covering the second end 120b of the conductive contact 120 with a gel coating layer 130, such as a conductive gel coating layer 130. Alternatively, when weaving the conductive contact 120, the conductive wire 121 can protrude slightly beyond the insulating wire 122, for example, by 1-2 mm, and then the second end 120b of the conductive contact 120 can be rounded through a melting process. Figure 2a and Figure 2b As shown.

[0078] As an example, the included angle θ between the conductive contact portion 120 and the conductive fixing portion 110 can be in the range of 30° to 150°.

[0079] For details, please refer to Figure 1 The illustration shows a case where the included angle θ between the conductive contact portion 120 and the conductive fixing portion 110 is 90°, but it is not limited to this. As needed, the included angle θ between the conductive contact portion 120 and the conductive fixing portion 110 can also be 30°, 60°, 135°, 150°, etc., to expand the application range of the cathode conductive brush 100.

[0080] As an example, the same conductive contact 120 may have one first end 120a and N>1 second ends 120b of the conductive contact 120.

[0081] For details, please refer to Figure 5 The diagram illustrates a structure where the same conductive contact portion 120 has one first end 120a and two second ends 120b, i.e., when N is 2. This provides a Y-shaped conductive contact portion 120, which improves the contact stability with the battery cell and further enhances the electroplating uniformity by setting multiple second ends 120b of the conductive contact portions 120. However, the value of N is not limited to this; N can also be 3, 4, 5, etc., as needed.

[0082] As an example, the conductive fixing part 110 may be provided with M>1 conductive contact parts 120, and the distribution shape of the M conductive contact parts 120 may include one or a combination of linear and curved shapes.

[0083] For details, please refer to Figure 6 The conductive fixing part 110 is provided with eight conductive contact parts 120 to increase the contact between the conductive contact parts 120 and the battery cell, improve the contact stability with the battery cell, and further improve the electroplating uniformity. However, the value of M is not limited to this. If needed, M can also be 1, 3, 4, 5, 10, etc.

[0084] Among them, see Figure 6 The eight conductive contacts 120 are arranged in a linear pattern to correspond with the trenches on the solar cell, thereby achieving good contact with the metal seed layer located in the trenches of the solar cell for electroplating. Of course, as needed, the arrangement of the multiple conductive contacts 120 may also include a curved pattern, or a pattern composed of a combination of linear and curved patterns; no excessive limitation is imposed here.

[0085] In another embodiment, such as Figure 2a and Figure 2b The contact area 120c between the conductive contact portion 120 and the battery cell can also be located at a distance of 1 to 5 mm from the second end 120b of the conductive contact portion 120, thereby improving the contact stability between the conductive contact portion 120 and the battery cell.

[0086] Specifically, when the contact area 120c is located 1 to 5 mm away from the second end 120b of the conductive contact portion 120 (e.g., 1 mm, 2 mm, 5 mm), during electroplating, based on the yield strength of the conductive contact portion 120, when the battery cell leaves the conductive contact portion 120, the conductive contact portion 120 can effectively oscillate. This effectively removes the electroplating solution remaining on the surface of the conductive contact portion 120 due to contact with the battery cell, thereby further reducing the probability of the cathode conductive brush 100 being electroplated by the electroplating solution, extending its service life, reducing costs, reducing replacement frequency, saving time, and increasing production capacity.

[0087] As an example, the cathode conductive brush 100 can be applied to cells such as tunneling oxide passivation layer cells (TOPCon), back contact cells (BC), and heterojunction cells (HJT).

[0088] Example 2

[0089] See Figure 9 This utility model also provides a horizontal electroplating apparatus, the horizontal electroplating apparatus comprising:

[0090] Electroplating tank 200;

[0091] Anode 300, wherein the anode 300 is disposed within the electroplating tank 200;

[0092] An isolation tank 400 is disposed inside the electroplating tank 200, through which the electroplating solution located in the electroplating tank 200 is returned;

[0093] An adsorption transfer roller 500 is disposed in the isolation groove 400, and the surface of the adsorption transfer roller 500 is covered with an adsorption layer 510. The adsorption layer 510 adsorbs the residual electroplating solution on the surface of the battery cell 700 located on the adsorption transfer roller 500.

[0094] A cathode conductive brush 100 is disposed within the isolation groove 400 and is disposed on the rotating side of the adsorption and transmission roller 500.

[0095] Specifically, the structure of the cathode conductive brush 100 can be referred to Embodiment 1, and will not be repeated here. The electroplating tank 200 is used to contain the electroplating solution. The type of electroplating solution can be selected according to the type of plating layer to be formed, and is not limited here. The material of the anode 300 can be selected such as titanium, copper, nickel, etc., and is not excessively restricted here. The isolation tank 400 provides a return tank for the electroplating solution, thereby preventing the cathode conductive brush 100 from contacting the electroplating solution in the electroplating tank 200. The adsorption and transfer roller 500 serves two purposes: firstly, it transports the battery cell 700; secondly, the adsorption layer 510 on the surface of the adsorption and transfer roller 500 adsorbs residual electroplating solution on the surface of the battery cell 700, thereby further purifying the battery cell 700 and reducing the probability of electroplating the cathode conductive brush 100 located on the rotating side of the adsorption and transfer roller 500. This extends the service life of the cathode conductive brush 100, reduces the replacement frequency, saves time and costs, and increases production capacity.

[0096] in, Figure 9 The arrows in the diagram indicate the transmission direction of the battery cell 700, and the fact that the cathode conductive brush 100 is located on the rear side of the adsorption and transmission roller 500 indicates that the cathode conductive brush 100 is located on the rotating side of the adsorption and transmission roller 500.

[0097] As an example, the adsorption layer 510 may include one or more of a sponge layer or a hollow fiber ultrafiltration membrane, and the specific type may be selected as needed.

[0098] As an example, the isolation tank 400 may include an inner isolation tank 410 and an outer isolation tank 420 located around the inner isolation tank 410, and the electroplating solution in the electroplating tank 200 is returned through the outer isolation tank 420, and the adsorption transfer roller 500 and the cathode conductive brush 100 are both located in the inner isolation tank 410.

[0099] For details, please refer to Figure 10 By setting the inner isolation tank 410 and the outer isolation tank 420, the probability of the cathode conductive brush 100 being electroplated can be further reduced, thereby further extending the service life of the cathode conductive brush 100, reducing the replacement frequency, saving time and costs, and increasing production capacity.

[0100] In summary, the horizontal electroplating device of this utility model includes an electroplating tank, an anode, an isolation tank, an adsorption and transfer roller, and a cathode conductive brush. The cathode conductive brush includes a conductive fixing part and a conductive contact part. The conductive contact part includes a mixed-braided conductive wire and an insulating wire. The conductive contact part has a first end and a second end arranged opposite to each other. The first end of the conductive contact part is fixed to the conductive fixing part and electrically connected to the conductive fixing part. The second end of the conductive contact part is a rounded tip. There is an angle between the conductive contact part and the conductive fixing part. The mixed-braided conductive wire and the insulating wire provide sufficient yield strength, allowing the cathode conductive brush to make good contact with the battery cell, improving electroplating uniformity, facilitating installation, saving time, and the rounded tip effectively avoids damage to the battery cell. Furthermore, when the cathode conductive brush is electroplated through the contact area of ​​the second end adjacent to the conductive contact part, the probability of the cathode conductive brush being electroplated by the electroplating solution can be further reduced, extending its service life and reducing costs. By setting the adsorption transfer roller, the residual electroplating solution on the surface of the battery cell can be effectively removed, further reducing the probability of the cathode conductive brush located on the rotating side of the adsorption transfer roller being electroplated, extending the service life of the cathode conductive brush and reducing costs.

[0101] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A horizontal electroplating apparatus, characterized in that, The horizontal electroplating apparatus includes: Electroplating tank; Anode, wherein the anode is disposed within the electroplating tank; An isolation tank is provided inside the electroplating tank, through which the electroplating solution located in the electroplating tank is returned; An adsorption transfer roller is disposed in the isolation groove, and the surface of the adsorption transfer roller is covered with an adsorption layer, which adsorbs residual electroplating liquid on the surface of the battery cell located on the adsorption transfer roller. A cathode conductive brush is disposed within the isolation groove and on the rotating side of the adsorption and transfer roller. The cathode conductive brush includes a conductive fixing part and a conductive contact part. The conductive contact part includes conductive wires and insulating wires, with the conductive wires and insulating wires being interwoven. The conductive contact part includes a first end and a second end disposed opposite to each other. The first end of the conductive contact part is fixed to the conductive fixing part and electrically connected to the conductive fixing part. The second end of the conductive contact part is a rounded tip. An angle exists between the conductive contact part and the conductive fixing part.

2. The horizontal electroplating apparatus according to claim 1, characterized in that: The adsorption layer includes one or more of a sponge layer or a hollow fiber ultrafiltration membrane, or a stack thereof.

3. The horizontal electroplating apparatus according to claim 1, characterized in that: The isolation tank includes an inner isolation tank and an outer isolation tank located around the inner isolation tank. The electroplating solution in the electroplating tank is returned through the outer isolation tank. The adsorption and transfer roller and the cathode conductive brush are both located in the inner isolation tank.

4. The horizontal electroplating apparatus according to claim 1, characterized in that: The yield strength of the conductive contact is 400–1000 MPa; the conductivity of the conductive contact is 10 × 10⁻⁶ MPa. 6 S / m or higher.

5. The horizontal electroplating apparatus according to claim 1, characterized in that: The second end of the conductive contact protrudes from the upper surface of the adsorption and transfer roller, with a protrusion distance of 1 to 5 mm.

6. The horizontal electroplating apparatus according to claim 1, characterized in that: The conductive wire includes one or a combination of metal wire and carbon-based fiber; the insulating wire includes one or a combination of PP wire, PVC wire and PE wire.

7. The horizontal electroplating apparatus according to claim 1, characterized in that: The conductive fixing part includes a metal clip, a metal sheet, or a metal roller; the fixing method between the conductive fixing part and the conductive contact part includes one or a combination of threaded connection, snap-fit ​​connection, mechanical clamping connection, welding, and tenon joint connection; the conductive fixing part is also provided with an insulating capillary tube, and the first end of the conductive contact part passes through the insulating capillary tube and is electrically connected to the conductive fixing part.

8. The horizontal electroplating apparatus according to claim 1, characterized in that: The second end of the conductive contact has a colloidal coating layer, through which the arcuate tip is formed, and / or the arcuate tip is formed by melting the second end of the conductive contact.

9. The horizontal electroplating apparatus according to claim 1, characterized in that: The included angle between the conductive contact and the conductive fixing part is in the range of 30° to 150°.

10. The horizontal electroplating apparatus according to claim 1, characterized in that: The same conductive contact portion has a first end of one conductive contact portion and a second end of N>1 conductive contact portions; the conductive fixing portion is provided with M>1 conductive contact portions, and the distribution shape of the M conductive contact portions includes one or a combination of linear and curved shapes.

Images