Cathode conductive brush and horizontal electroplating device

Abstract

The invention provides a cathode conductive brush and a horizontal electroplating device, the cathode conductive brush comprises a conductive fixing part and a conductive contact part, the conductive contact part comprises a conductive wire and an insulating wire which are mixed, the second end of the conductive contact part is a circular arc tip, and enough yield strength can be provided through the mixed conductive wire and the insulating wire, so that the cathode conductive brush can be applied to the horizontal electroplating device. Therefore, the cathode conductive brush can be in good contact with the battery piece, the electroplating uniformity is improved, the installation is convenient, the time efficiency can be saved, and the damage to the battery piece can be effectively avoided by the arc tip. Furthermore, when electroplating is carried out through the contact area, the probability that the cathode conductive brush is electroplated by electroplating liquid can be further reduced, the service life is prolonged, and the cost is reduced. Furthermore, the horizontal electroplating device can effectively remove residual electroplating liquid on the surface of the battery piece through the arrangement of an adsorption transmission roller, and the probability that a cathode conductive brush located on the screwing-out side of the adsorption transmission roller is electroplated is further reduced.

Description

Technical Field

[0001] The invention belongs to the field of electroplating and relates to a cathode conductive brush and a horizontal electroplating device. Background Art

[0002] With the continuous expansion of the scale of the photovoltaic industry and the rapid development of the market, the market has put forward higher and higher requirements for the manufacturing price, process complexity and quality of photovoltaic cells. After the processes of texturing and diffusion, the solar cell can generate current under light. In order to conduct the generated current, it is necessary to make electrodes on the surface of the cell. The existing methods for manufacturing electrodes mainly include screen printing and electroplating processes. Among them, screen printing is to print silver and other metals on the surface of the cell by embossing, and finally form conductive grid lines by sintering, that is, the electrodes of the solar cell. This method is relatively costly, and the line width of the prepared electrode is difficult to achieve refinement, and the light receiving rate of the cell is difficult to improve. Therefore, the electroplating method with low cost, thin line width and high light receiving rate of the cell is widely used.

[0003] Photovoltaic electroplating processes are mainly divided into two methods, one is hanging plating (fixture type), and the other is horizontal plating (i.e. fixture-free). Among them, hanging plating often causes plating risks on the fixture, and the fixture needs to be replaced frequently to de-plated, which will cause cumbersome procedures and increase equipment investment and labor costs. The existing horizontal plating often uses conductive wire or conductive glue for electroplating. Among them, when conductive wire is used for electroplating, there are problems such as poor plating consistency, many surface scratches on the battery cell, the conductive wire is not easy to fix, and the installation is time-consuming; when conductive glue is used for electroplating, there are problems such as poor plating consistency, more consumable materials, high requirements for the degree of equipment automation, and time-consuming installation.

[0004] Therefore, it is necessary to provide a cathode conductive brush and a horizontal electroplating device. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a cathode conductive brush and a horizontal electroplating device, which are used to solve the production and product quality problems existing in the prior art when performing horizontal plating.

[0006] In order to achieve the above-mentioned object and other related objects, the present invention provides a cathode conductive brush, the cathode conductive brush comprising:

[0007] A conductive fixing portion;

[0008] A conductive contact portion, wherein the conductive contact portion includes a conductive wire and an insulating wire, and the conductive wire and the insulating wire are mixed, the conductive contact portion includes a first end and a second end arranged opposite to each other, the first end of the conductive contact portion is fixed on the conductive fixing portion and electrically connected to the conductive fixing portion, the second end of the conductive contact portion is a rounded tip, and an angle is formed between the conductive contact portion and the conductive fixing portion.

[0009] Optionally, the yield strength of the conductive contact portion is 400-1000 MPa; the conductivity of the conductive contact portion is 10×10 6 S / m and above.

[0010] Optionally, the distance between the contact area of ​​the conductive contact portion and the second end of the conductive contact portion is 1-5 mm.

[0011] 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; the conductive fixing part includes a metal clip, a metal sheet or a metal roller; the fixing method of the conductive fixing part and the conductive contact part includes one or a combination of threaded connection, snap connection, mechanical clamping connection, welding and mortise and tenon connection; an insulating capillary is also provided on the conductive fixing part, and the first end of the conductive contact part passes through the insulating capillary and is electrically connected to the conductive fixing part.

[0012] Optionally, the second end of the conductive contact portion has a colloid coating layer, and the rounded tip is formed by the colloid coating layer, and / or the rounded tip is formed by melting the second end of the conductive contact portion.

[0013] Optionally, the angle between the conductive contact portion and the conductive fixing portion ranges from 30° to 150°.

[0014] Optionally, the same conductive contact portion has 1 first end of the conductive contact portion and N>1 second ends of the conductive contact portion; M>1 conductive contact portions are arranged on the conductive fixed portion, and the distribution morphology formed by the M conductive contact portions includes one or a combination of linear and curved types.

[0015] The present invention also provides a horizontal electroplating device, the horizontal electroplating device comprising:

[0016] Electroplating tanks;

[0017] an anode, the anode being disposed in the electroplating tank;

[0018] An isolation tank, the isolation tank being disposed in the electroplating tank and through which the electroplating solution in the electroplating tank flows back;

[0019] An adsorption transport roller, the adsorption transport roller is disposed in the isolation groove, and the surface of the adsorption transport roller is coated with an adsorption layer, and the adsorption layer adsorbs the residual plating liquid on the surface of the battery cell on the adsorption transport roller;

[0020] Any of the above-mentioned cathode conductive brushes, wherein the cathode conductive brush is arranged in the isolation groove, and the cathode conductive brush is arranged on the rotation-out side of the adsorption transmission roller.

[0021] Optionally, the adsorption layer includes one or a stack of a sponge layer or a hollow fiber ultrafiltration membrane.

[0022] Optionally, the isolation tank includes an isolation inner tank and an isolation outer tank located outside the isolation inner tank, and the plating liquid in the plating tank is refluxed through the isolation outer tank, and the adsorption transfer roller and the cathode conductive brush are both located in the isolation inner tank.

[0023] As described above, the cathode conductive brush of the present invention includes a conductive fixing portion and a conductive contact portion, and the conductive contact portion includes a mixed conductive wire and an insulating wire, the conductive contact portion includes a first end and a second end that are relatively arranged, and the first end of the conductive contact portion is fixed on the conductive fixing portion and electrically connected to the conductive fixing portion, the second end of the conductive contact portion is a rounded tip, and an angle is formed between the conductive contact portion and the conductive fixing portion. Among them, the mixed conductive wire and the insulating wire can provide sufficient yield strength, so that the cathode conductive brush can have good contact with the battery cell, improve the uniformity of electroplating, facilitate installation, save 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 adjacent to the second end of the conductive contact portion, the probability of the cathode conductive brush being electroplated by the electroplating solution can be further reduced, the service life can be extended, and the cost can be reduced.

[0024] The horizontal electroplating device of the present invention comprises an electroplating tank, an anode, an isolation tank, an adsorption transmission roller and the above-mentioned cathode conductive brush, wherein the anode is arranged in the electroplating tank; the isolation tank is arranged in the electroplating tank, and the electroplating liquid in the electroplating tank is refluxed through the isolation tank; the adsorption transmission roller is arranged in the isolation tank, and the surface of the adsorption transmission roller is coated with an adsorption layer, and the adsorption layer adsorbs the residual electroplating liquid on the surface of the battery cell on the adsorption transmission roller; the cathode conductive brush is arranged in the isolation tank, and the cathode conductive brush is arranged on the screw-out side of the adsorption transmission roller. The horizontal electroplating device of the present invention has the above-mentioned beneficial effects of the cathode conductive brush due to the above-mentioned cathode conductive brush. Furthermore, through the arrangement of the adsorption transmission roller, the residual electroplating liquid on the surface of the battery cell can be effectively removed, further reducing the probability of the cathode conductive brush located on the screw-out side of the adsorption transmission roller being electroplated, extending the service life of the cathode conductive brush, and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is a schematic structural diagram of the cathode conductive brush in the first embodiment of the present invention.

[0026] Figure 2a It is a schematic structural diagram of a conductive contact portion having a rounded tip obtained through melting treatment in the first embodiment of the present invention.

[0027] Figure 2b Display as Figure 2a Schematic diagram of the side structure.

[0028] Figure 3 It is a schematic structural diagram of a conductive contact portion with a rounded tip having a colloid coating layer in the first embodiment of the present invention.

[0029] Figure 4 It is a schematic structural diagram of a conductive contact portion with an insulating capillary in the first embodiment of the present invention.

[0030] Figure 5 It is a schematic structural diagram of a conductive contact portion of the second end having two conductive contact portions in the first embodiment of the present invention.

[0031] Figure 6 It is a schematic structural diagram of a cathode conductive brush having 8 conductive contact parts in the first embodiment of the present invention.

[0032] Figure 7 The diagram shows the effect of electroplating using only conductive wire as the conductive contact portion in the first embodiment of the present invention.

[0033] Figure 8 The diagram shows the effect of electroplating the mixed conductive contact portion in the first embodiment of the present invention.

[0034] Fig. 9 It shows a schematic diagram of the structure of the horizontal electroplating device in the second embodiment of the present invention.

[0035] Fig.10 It is a schematic structural diagram of a horizontal electroplating device with an isolated inner tank and an isolated outer tank in the second embodiment of the present invention.

[0036] Description of Reference Numerals

[0037] 100 cathode conductive brush

[0038] 110 conductive fixing part

[0039] 120 conductive contact part

[0040] 121 conductive thread

[0041] 122 Insulation Wire

[0042] 120a A first end of the conductive contact portion

[0043] 120b The second end of the conductive contact portion

[0044] 120c contact area of ​​the conductive contact portion

[0045] 130 colloid coating

[0046] 140 Insulation Capillary

[0047] 200 plating tank

[0048] 300 Anode

[0049] 400 Isolation Tank

[0050] 410 Isolation inner groove

[0051] 420 Isolation outer tank

[0052] 500 adsorption transfer roller

[0053] 510 adsorption layer

[0054] 600 Power Supply

[0055] 700 battery cells

[0056] 800 scratches DETAILED DESCRIPTION

[0057] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0058] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional views showing the structures will not be partially enlarged according to the general scale, and the schematic views are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0059] For ease of description, spatial relational terms such as “under”, “below”, “below”, “below”, “over”, etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other orientations of the device in use or operation in addition to the orientation depicted in the drawings, and may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, so that the first and second features may not be in direct contact. In addition, when a layer is referred to as being “between” two layers, it may be the only layer between the two layers, or one or more intervening layers may also be present.

[0060] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0061] Embodiment 1

[0062] See also Figure 1 , Figure 2a and Figure 2b This embodiment provides a cathode conductive brush 100, and the cathode conductive brush 100 includes:

[0063] A conductive fixing portion 110;

[0064] The conductive contact portion 120 includes a conductive wire 121 and an insulating wire 122, and the conductive wire 121 and the insulating wire 122 are mixed. The conductive contact portion 120 includes a first end 120a and a second end 120b that are arranged opposite to each other. The first end 120a of the conductive contact portion 120 is fixed on the conductive fixing portion 110 and is electrically connected to the conductive fixing portion 110. The second end 120b of the conductive contact portion 120 is a rounded tip. An angle θ is formed between the conductive contact portion 120 and the conductive fixing portion 110.

[0065] The cathode conductive brush 100 of this embodiment can provide sufficient yield strength through the mixed conductive wire 121 and the insulating wire 122, so that the cathode conductive brush 100 can have good contact with the battery cell, improve the uniformity of electroplating, facilitate installation, save time, and the rounded tip can effectively avoid damage to the battery cell.

[0066] For details, see Figure 2a and Figure 2bThe mixed weaving method of the conductive wire 121 and the insulating wire 122 may include braid weaving, fishnet weaving, rope weaving, etc., and there is no excessive restriction on the mixed weaving method of the conductive wire 121 and the insulating wire 122. Among them, the conductive wire 121 mainly functions as a conductor and also has a certain supporting function. The insulating wire 122 mainly functions as a support. By mixing the insulating wire 122 and the conductive wire 121, the conductive contact portion 120 can have a good yield strength.

[0067] Among them, the specifications of the conductive wire 121 can be 0.01mm~5mm, such as 0.01mm, 0.05mm, 0.1mm, 1mm, 2.5mm, 5mm, etc., and the specifications of the insulating wire 122 can be 0.01mm~5mm, such as 0.01mm, 0.05mm, 0.1mm, 1mm, 2.5mm, 5mm, etc. The specifications of the conductive wire 121 and the insulating wire 122 can be adjusted according to the current size.

[0068] As an example, the yield strength of the conductive contact portion 120 may be 400-1000 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.

[0069] Specifically, when the yield strength of the conductive contact part 120 is 400-1000MPa, on the one hand, the cathode conductive brush 100 can be in good contact with the battery cell, thereby improving the uniformity of electroplating, facilitating installation, and saving time; on the other hand, when the conductive contact part 120 is in contact with the battery cell, the conductive contact part 120 with the yield strength can swing when the battery cell leaves the conductive contact part 120, thereby effectively removing the plating liquid remaining on the surface of the conductive contact part 120 due to contact with the battery cell, thereby reducing the probability of the cathode conductive brush 100 being plated by the plating liquid, extending the service life, reducing costs, reducing the replacement frequency, saving time, and improving production capacity.

[0070] As an example, the conductivity of the conductive contact portion 120 may be 10×10 6 S / m or above, such as 10×10 6 S / m, 12×10 6 S / m, 14×10 6 S / m, etc., to meet electrical requirements.

[0071] 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.

[0072] Specifically, the conductive wire 121 may be made of one or more materials such as brass, pure copper, nickel, titanium, silver, gold, etc. Of course, according to needs, the conductive wire 121 may also include carbon-based fibers, or a combination of carbon-based fibers and metal wires, etc. The insulating wire 122 may include one or a combination of PP wire, PVC wire, and PE wire, etc.

[0073] As an example, the conductive fixing part 110 may include a metal clip, a metal sheet or a metal roller, and the specific type of the conductive fixing part 110 can be selected according to needs. The conductive contact part 120 can be fixed by the conductive fixing part 110, and the conductive fixing part 110 is conductive, so it can be electrically connected to a power source to realize power supply to the conductive contact part 120.

[0074] The fixing method of the conductive fixing part 110 and the conductive contact part 120 may include one or a combination of threaded connection, snap connection, mechanical clamping connection, welding and mortise and tenon connection, and there is no excessive restriction on the fixing method of the conductive fixing part 110 and the conductive contact part 120. Since the conductive contact part 120 has the insulating wire 122 for supporting, it has a certain yield strength and can be easily installed.

[0075] As an example, an insulating capillary 140 may be further disposed on the conductive fixing portion 110 , and the first end 120 a of the conductive contact portion 120 passes through the insulating capillary 140 to be electrically connected to the conductive fixing portion 110 .

[0076] For details, see Figure 4 When the insulating capillary 140 is provided, the supporting effect of the conductive contact portion 120 can be further improved, so that the conductive contact portion 120 and the conductive fixing portion 110 are easily fixed.

[0077] For example, see Figure 3 The second end 120b of the conductive contact portion 120 may have a colloidal coating layer 130, and the rounded tip is formed by the colloidal coating layer 130, and / or the rounded tip is formed by melting the second end 120b of the conductive contact portion 120.

[0078] For details, see Figure 7 As a comparison, this embodiment provides a structural diagram of electroplating using only conductive wire as a conductive contact portion and an effect diagram after electroplating. Figure 7It can be seen that when only conductive wire is used as the conductive contact part, due to the direct contact between the sharp conductive wire and the battery cell, many scratches 800 will be left on the metal surface of the battery cell; in the process of installing the conductive wire, there will also be problems such as difficulty in installation, resulting in time-consuming installation; during electroplating, the contact stability between the conductive wire and the battery cell is not good, so the film electroplated on the battery cell also has the problem of poor consistency.

[0079] In this embodiment, refer to Figure 8 The effect of the battery cell after electroplating using the mixed conductive contact part 120 with the rounded tip is shown. Since the second end 120b of the conductive contact part 120 is a rounded tip, when the conductive contact part 120 contacts the battery cell for electroplating, the second end 120b of the conductive contact part 120 can effectively reduce the scratches 800 on the surface of the battery cell, thereby effectively reducing the damage to the battery cell.

[0080] The rounded tip can be realized by coating the second end 120b of the conductive contact portion 120 with a colloid coating 130, such as coating the conductive colloid coating 130. Of course, according to needs, when mixing the conductive contact portion 120, the conductive wire 121 can also be made to partially protrude from the insulating wire 122, such as protruding by 1 to 2 mm, and then the second end 120b of the conductive contact portion 120 is rounded by a melting treatment, such as Figure 2a and Figure 2b shown.

[0081] As an example, the angle θ between the conductive contact portion 120 and the conductive fixing portion 110 may be in the range of 30° to 150°.

[0082] For details, see Figure 1 The diagram illustrates a case where the angle θ between the conductive contact portion 120 and the conductive fixing portion 110 is 90°, but is not limited thereto. As required, the angle θ between the conductive contact portion 120 and the conductive fixing portion 110 may also be 30°, 60°, 135°, 150°, etc., to expand the application range of the cathode conductive brush 100.

[0083] As an example, the same conductive contact portion 120 may have one first end 120 a of the conductive contact portion 120 and N>1 second ends 120 b of the conductive contact portion 120 .

[0084] For details, see Figure 5The schematic diagram of the structure of the same conductive contact portion 120 having one first end 120a of the conductive contact portion 120 and two second ends 120b of the conductive contact portions 120, i.e., the case where N is 2, thereby providing a Y-shaped conductive contact portion 120, so as to improve the contact stability with the battery cell and further improve the uniformity of electroplating through the arrangement of multiple second ends 120b of the conductive contact portions 120, but the value of N is not limited to this, and N can also be 3, 4, 5, etc. as needed.

[0085] As an example, M>1 of the conductive contact portions 120 may be disposed on the conductive fixing portion 110 , and the distribution morphology formed by the M conductive contact portions 120 may include one or a combination of a straight line type and a curved line type.

[0086] For details, see Figure 6 , 8 conductive contact parts 120 are arranged on the conductive fixing part 110 to increase the contact between the conductive contact part 120 and the battery cell, improve the contact stability with the battery cell, and further improve the electroplating uniformity, but the value of M is not limited to this, and M can also be 1, 3, 4, 5, 10, etc. as needed.

[0087] Among them, see Figure 6 , the distribution morphology formed by the eight conductive contact portions 120 is a straight line type, so as to be arranged corresponding to the grooves on the battery cell, so as to achieve good contact with the metal seed layer in the grooves of the battery cell for electroplating. Of course, according to needs, the distribution morphology formed by the plurality of conductive contact portions 120 may also include a curved line type, or a pattern composed of a combination of a straight line type and a curved line type, which is not excessively limited here.

[0088] In another embodiment, if Figure 2a and Figure 2b The contact area 120c between the conductive contact part 120 and the battery cell may also be 1 to 5 mm away from the second end 120b of the conductive contact part 120, thereby improving the contact stability between the conductive contact part 120 and the battery cell.

[0089] Specifically, when the contact area 120c is 1 to 5 mm away from the second end 120b of the conductive contact part 120, such as 1 mm, 2 mm, 5 mm, etc., during electroplating, based on the yield strength of the conductive contact part 120, when the battery cell leaves the conductive contact part 120, the conductive contact part 120 can be effectively swung, and the plating liquid remaining on the surface of the conductive contact part 120 due to contact with the battery cell can be effectively removed, thereby further reducing the probability of the cathode conductive brush 100 being electroplated by the plating liquid, extending the service life, reducing costs, reducing the replacement frequency, saving time, and improving production capacity.

[0090] As an example, the cathode conductive brush 100 can be applied to a tunneling oxide passivation layer cell (TOPCon), a back contact cell (BC), a heterojunction cell (HJT), and the like.

[0091] Embodiment 2

[0092] See also Fig. 9 The present invention also provides a horizontal electroplating device, the horizontal electroplating device comprising:

[0093] Electroplating tank 200;

[0094] an anode 300, wherein the anode 300 is disposed in the electroplating tank 200;

[0095] An isolation tank 400, wherein the isolation tank 400 is disposed in the electroplating tank 200, and the electroplating solution in the electroplating tank 200 is refluxed through the isolation tank 400;

[0096] An adsorption transport roller 500, wherein the adsorption transport roller 500 is disposed in the isolation groove 400, and the surface of the adsorption transport roller 500 is coated with an adsorption layer 510, and the adsorption layer 510 adsorbs the residual plating solution on the surface of the battery cell 700 on the adsorption transport roller 500;

[0097] The cathode conductive brush 100 is disposed in the isolation groove 400 , and the cathode conductive brush 100 is disposed on the screw-out side of the adsorption transmission roller 500 .

[0098] Specifically, the structure of the cathode conductive brush 100 can be referred to in Example 1, which will not be described in detail here. The electroplating tank 200 is used to contain the electroplating solution. The type of the electroplating solution can be selected according to the type of the coating to be formed, which is not limited here. The material of the anode 300 can be selected such as titanium, copper, nickel, etc., which is not excessively limited here. The setting of the isolation tank 400 can provide a reflux tank for the electroplating solution, thereby avoiding the contact between the cathode conductive brush 100 and the electroplating solution in the electroplating tank 200. The adsorption transfer roller 500 is configured to transfer the battery cell 700 on the one hand, and on the other hand, the residual electroplating liquid on the surface of the battery cell 700 on the adsorption transfer roller 500 can be adsorbed by the adsorption layer 510 located on the surface of the adsorption transfer roller 500, thereby further purifying the battery cell 700 and reducing the probability of electroplating the cathode conductive brush 100 located on the screw-out side of the adsorption transfer roller 500, thereby extending the service life of the cathode conductive brush 100, reducing the replacement frequency, saving time and cost, and improving production capacity.

[0099] in, Fig. 9The direction indicated by the arrow in the figure is a schematic diagram of the transmission direction of the battery cell 700, and the cathode conductive brush 100 is arranged on the rear side of the adsorption and transmission roller 500, which is a schematic diagram of the cathode conductive brush 100 being located on the screw-out side of the adsorption and transmission roller 500.

[0100] As an example, the adsorption layer 510 may include one or a stack of a sponge layer or a hollow fiber ultrafiltration membrane, and the specific type may be selected according to needs.

[0101] As an example, the isolation tank 400 may include an isolation inner tank 410 and an isolation outer tank 420 located outside the isolation inner tank 410, and the plating liquid in the plating tank 200 refluxes through the isolation outer tank 420, and the adsorption transfer roller 500 and the cathode conductive brush 100 are both located in the isolation inner tank 410.

[0102] For details, see Fig.10 By setting the isolation inner groove 410 and the isolation outer groove 420, the probability of the cathode conductive brush 100 being electroplated can be further reduced, so as to further extend the service life of the cathode conductive brush 100, reduce the replacement frequency, save time and cost, and improve production capacity.

[0103] In summary, the cathode conductive brush of the present invention includes a conductive fixing portion and a conductive contact portion, and the conductive contact portion includes mixed conductive wires and insulating wires, the conductive contact portion includes a first end and a second end that are relatively arranged, and the first end of the conductive contact portion is fixed on the conductive fixing portion and electrically connected to the conductive fixing portion, the second end of the conductive contact portion is a rounded tip, and an angle is formed between the conductive contact portion and the conductive fixing portion. Among them, the mixed conductive wires and insulating wires can provide sufficient yield strength, so that the cathode conductive brush can have good contact with the battery cell, improve the uniformity of electroplating, facilitate installation, save 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 adjacent to the second end of the conductive contact portion, the probability of the cathode conductive brush being electroplated by the electroplating solution can be further reduced, the service life can be extended, and the cost can be reduced.

[0104] The horizontal electroplating device of the present invention comprises an electroplating tank, an anode, an isolation tank, an adsorption transmission roller and the above-mentioned cathode conductive brush, wherein the anode is arranged in the electroplating tank; the isolation tank is arranged in the electroplating tank, and the electroplating liquid in the electroplating tank is refluxed through the isolation tank; the adsorption transmission roller is arranged in the isolation tank, and the surface of the adsorption transmission roller is coated with an adsorption layer, and the adsorption layer adsorbs the residual electroplating liquid on the surface of the battery cell on the adsorption transmission roller; the cathode conductive brush is arranged in the isolation tank, and the cathode conductive brush is arranged on the screw-out side of the adsorption transmission roller. The horizontal electroplating device of the present invention has the above-mentioned beneficial effects of the cathode conductive brush due to the above-mentioned cathode conductive brush. Furthermore, through the arrangement of the adsorption transmission roller, the residual electroplating liquid on the surface of the battery cell can be effectively removed, further reducing the probability of the cathode conductive brush located on the screw-out side of the adsorption transmission roller being electroplated, extending the service life of the cathode conductive brush, and reducing the cost.

[0105] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A cathode conductive brush, characterized in that: The cathode conductive brush comprises: A conductive fixing portion; A conductive contact portion, wherein the conductive contact portion includes a conductive wire and an insulating wire, and the conductive wire and the insulating wire are mixed, the conductive contact portion includes a first end and a second end arranged opposite to each other, the first end of the conductive contact portion is fixed on the conductive fixing portion and electrically connected to the conductive fixing portion, the second end of the conductive contact portion is a rounded tip, and an angle is formed between the conductive contact portion and the conductive fixing portion.

2. The cathode conductive brush according to claim 1, characterized in that: The yield strength of the conductive contact portion is 400-1000 MPa; the conductivity of the conductive contact portion is 10×10 6 S / m and above.

3. The cathode conductive brush according to claim 1, characterized in that: The distance between the contact area of ​​the conductive contact portion and the second end of the conductive contact portion is 1-5 mm.

4. The cathode conductive brush 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; the conductive fixing part includes a metal clip, a metal sheet or a metal roller; the fixing method of the conductive fixing part and the conductive contact part includes one or a combination of threaded connection, snap connection, mechanical clamping connection, welding and mortise and tenon connection; an insulating capillary is also provided on the conductive fixing part, and the first end of the conductive contact part passes through the insulating capillary and is electrically connected to the conductive fixing part.

5. The cathode conductive brush according to claim 1, characterized in that: The second end of the conductive contact portion has a colloid coating layer, and the rounded tip is formed by the colloid coating layer, and / or the rounded tip is formed by melting the second end of the conductive contact portion.

6. The cathode conductive brush according to claim 1, characterized in that: The included angle between the conductive contact portion and the conductive fixing portion is in the range of 30° to 150°.

7. The cathode conductive brush according to claim 1, characterized in that: The same conductive contact portion has 1 first end of the conductive contact portion and N>1 second ends of the conductive contact portion; M>1 conductive contact portions are arranged on the conductive fixing portion, and the distribution morphology formed by the M conductive contact portions includes one or a combination of linear and curved types.

8. A horizontal electroplating device, characterized in that: The horizontal electroplating device comprises: Electroplating tanks; an anode, the anode being disposed in the electroplating tank; An isolation tank, the isolation tank being disposed in the electroplating tank and through which the electroplating solution in the electroplating tank flows back; An adsorption transport roller, the adsorption transport roller is disposed in the isolation groove, and the surface of the adsorption transport roller is coated with an adsorption layer, and the adsorption layer adsorbs the residual plating liquid on the surface of the battery cell on the adsorption transport roller; According to any one of claims 1 to 7, the cathode conductive brush is arranged in the isolation groove, and the cathode conductive brush is arranged on the rotation side of the adsorption transmission roller.

9. The horizontal electroplating device according to claim 8, characterized in that: The adsorption layer includes one or a stack of sponge layers or hollow fiber ultrafiltration membranes.

10. The horizontal electroplating device according to claim 8, characterized in that: The isolation tank includes an isolation inner tank and an isolation outer tank located outside the isolation inner tank, and the plating solution in the plating tank flows back through the isolation outer tank, and the adsorption transmission roller and the cathode conductive brush are both located in the isolation inner tank.

Images