CN215628391U

CN215628391U - Cathode assembly for electroplating solar photovoltaic product and electroplating assembly

Info

Publication number: CN215628391U
Application number: CN202120502304.3U
Authority: CN
Inventors: 朱玮; 陈刚
Original assignee: Zhejiang Aiko Solar Energy Technology Co Ltd
Current assignee: Zhejiang Aiko Solar Energy Technology Co Ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2022-01-25
Anticipated expiration: 2031-03-09

Abstract

The utility model discloses a cathode assembly and an electroplating assembly for electroplating a solar photovoltaic product, and belongs to the field of electroplating equipment for the solar photovoltaic product. The cathode assembly comprises a cathode roller, the cathode roller is electrically connected with a power supply through a conductive element, the cathode roller comprises a roller body, the roller body comprises an outer peripheral face, conductive fibers are arranged on the outer peripheral face, the conductive fibers extend along the radial direction of the roller body, and the conductive fibers are in electrical contact with the roller body. In addition, the utility model also discloses an electroplating assembly adopting the cathode assembly. The utility model has the advantage of effectively improving the conductive effect between the cathode assembly and the photovoltaic product.

Description

Cathode assembly for electroplating solar photovoltaic product and electroplating assembly

[ technical field ] A method for producing a semiconductor device

The utility model relates to a cathode assembly and electroplating equipment for electroplating a solar photovoltaic product, and belongs to the field of electroplating equipment for solar photovoltaic products.

[ background of the utility model ]

With the scale expansion and rapid development of the photovoltaic industry, the market has stronger and stronger competition for solar photovoltaic products, so that cost reduction is an urgent problem to be solved by many enterprises for the solar photovoltaic products.

Taking a solar cell as an example, in the conventional solar cell, silver paste is printed on a silicon wafer, and the silver paste accounts for more than 25% of the total cost of producing the solar cell, so how to replace the silver paste is a key point. Therefore, at present, enterprises replace silver paste by adopting a copper electroplating mode, and the basic principle is that a battery piece sequentially passes through a cathode assembly and an anode assembly.

The prior cathode component does not have a mature cathode component for electric conduction at present, and a stainless steel roller is directly used as an electric conduction roller of the cathode component. However, because the surface of the photovoltaic product has protruded non-conductive substances such as a mask, the stainless steel conductive roller cannot contact the conductive layer in the gap, and the conductive effect is poor.

[ Utility model ] content

The utility model aims to overcome the defects of the prior art and provides a cathode assembly and an electroplating assembly for electroplating a solar photovoltaic product, which can effectively improve the conductive effect between the cathode assembly and the photovoltaic product.

The technical scheme adopted by the utility model is as follows:

the utility model provides a negative pole subassembly for electroplating solar photovoltaic product, negative pole subassembly includes the cathode roller, and the cathode roller passes through conductive element and links with the power electricity, the cathode roller includes the gyro wheel body, the gyro wheel body includes the outer peripheral face, be equipped with conductive carbon fiber on the outer peripheral face, conductive carbon fiber radially extends along the gyro wheel body, conductive fiber and gyro wheel body electrical contact.

According to the utility model, the conductive fibers are arranged on the peripheral surface of the roller body, and the conductive fibers are relatively soft compared with the rigid roller body, so that the conductive fibers can be contacted with the concave surface or the gap on the surface of the photovoltaic product, thereby realizing the electrical contact between the conductive fibers and the photovoltaic product, and meanwhile, the conductive fibers are in electrical contact with the roller body, thereby realizing the indirect electrical connection between the concave surface or the gap on the surface of the photovoltaic product and the roller body, and further improving the overall conductive effect between the photovoltaic product and the cathode assembly.

In addition, the conductive fiber is soft, so that the surface of the photovoltaic product is basically not abraded, and the photovoltaic product is relatively well protected.

Preferably, the plurality of conductive fibers constitute carbon fiber strands, which are distributed on the outer peripheral surface.

Preferably, the carbon fiber strand comprises a fixed end and a free end, the fixed end is fixed with the roller body, and the free end is divergent.

Preferably, the roller body is provided with an insertion groove, and the conductive fibers are inserted into the insertion groove.

Preferably, the conductive fibers and the roller body are welded or bonded.

Preferably, the conductive fibers are conductive carbon fibers.

Preferably, the length of the conductive carbon fiber is 1 mm-50 mm; and/or the diameter of the conductive carbon fiber is 5 um-50 um.

Preferably, the cathode assembly comprises at least two cathode rollers, the two cathode rollers are arranged in parallel, and the photovoltaic product passes through the two cathode rollers.

In addition, the utility model also discloses a horizontal electroplating assembly of the solar photovoltaic product, which comprises a cathode assembly and an anode assembly, wherein the photovoltaic product forms a closed loop when passing through the cathode assembly and the anode assembly, and the electroplating module adopts the cathode assembly in any one of the schemes.

Preferably, the positive pole subassembly includes blade running roller, nozzle and two anode plates, and in vertical direction, the blade running roller is established in the middle of two anode plates, all is equipped with the perforation on every anode plate, nozzle one end intercommunication has the plating solution pipeline, and the other end passes perforation and towards in the middle of two anode plates, and photovoltaic product follows pass through in the middle of two anode plates the blade running roller, the jet direction of the nozzle on two anode plates is towards the upper surface and the lower surface of photovoltaic product respectively.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic structural diagram of a cathode assembly according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a cathode roller according to an embodiment of the present invention;

FIG. 3 is a schematic view of an electroplating assembly according to a second embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an anode assembly in a plating assembly according to a second embodiment of the utility model.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the following description, the terms such as "inner", "outer", "upper", "lower", "left", "right", etc., which indicate orientations or positional relationships, are used for convenience in describing embodiments and simplifying descriptions, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, the cathode assembly 1 for electroplating a solar photovoltaic product is a schematic structural diagram, the cathode assembly 1 includes a cathode roller, the cathode roller is electrically connected with a power supply through a conductive element to realize circuit communication, the cathode roller includes a roller body 10, the roller body 10 includes an outer peripheral surface, a conductive fiber 11 is arranged on the outer peripheral surface, the conductive fiber 11 extends along the roller body 10 in a radial direction, and the conductive fiber 11 is in electrical contact with the roller body 10. It should be noted that, the conductive fibers 11 referred to herein extend along the radial direction of the roller body 10, and refer to generally along the radial direction of the roller body 10, because the conductive fibers 11 are relatively flexible and their directions are not strictly uniform, but extend generally along the radial direction of the roller body 10, it is intended to illustrate that the conductive fibers 11 need to extend radially outward from the outer peripheral surface. The photovoltaic product in this embodiment takes a battery silicon wafer as an example. The conductive fibers 11 of the present embodiment are preferably conductive carbon fibers.

In this embodiment, the conductive fibers 11 are disposed on the outer peripheral surface of the roller body 10, since the conductive fibers 11 are relatively soft compared to the rigid roller body 10, the portion of the conductive fibers 11 can contact the concave surface or the gap on the surface of the photovoltaic product, so as to achieve the electrical contact between the conductive fibers 11 and the photovoltaic product, and meanwhile, the conductive fibers 11 are in electrical contact with the roller body 10, so as to indirectly electrically connect with the roller body 10 at the position of the concave surface or the gap on the surface of the photovoltaic product, thereby improving the overall conductive effect between the photovoltaic product and the cathode assembly 1.

In addition, since the conductive fibers 11 themselves are soft and do not substantially abrade the surface of the photovoltaic product, the protection of the photovoltaic product is relatively good.

In order to facilitate the distribution of the conductive fibers 11 on the outer circumferential surface, the present embodiment makes up the carbon fiber strands from a plurality of conductive carbon fibers, so that the carbon fiber strands can be distributed on the outer circumferential surface as a whole. As shown in fig. 2, this is convenient. In other embodiments, the conductive carbon fibers are not limited to be formed into carbon fiber strands, and a single conductive carbon fiber may be separately distributed on the outer peripheral surface.

In addition, in order to reduce the overall wear of the carbon fiber strand on the photovoltaic product, the carbon fiber strand in this embodiment includes a fixed end and a free end, wherein the fixed end is fixed with the roller body 10, and the free end is divergent. Also, as shown in fig. 2, by designing the free end to be divergent, the degree of flexibility of the free end can be increased, thereby reducing damage to the photovoltaic product. Therefore, the abrasion to the photovoltaic product can be reduced on the premise of ensuring convenient installation.

In a specific connection manner, the conductive fibers 11 may be connected to the roller body 10 by insertion, and since the conductive fibers 11 form carbon fiber strands in this embodiment, an insertion groove is formed in the roller body 10 in this embodiment, and the whole carbon fiber strand is inserted into the insertion groove.

It should be noted that in other embodiments, the slots may be individually matched to the conductive fibers 11 if not in the form of carbon fiber strands. For the cartridge, the cartridge may be a single hole or an elongated slot axially distributed along the roller body 10.

Of course, the connection mode between the conductive fibers 11 and the roller body 10 may be welding or bonding.

For the specification of the conductive carbon fiber, the diameter of the conductive carbon fiber is 5um to 50 um. Preferably 5um, 10um, 30um or 50 um. The length of the conductive carbon fiber is 1mm to 50mm, preferably 1mm, 10mm, 30mm or 50 mm.

In addition, it is preferable for the whole cathode assembly 1 to include at least two cathode rollers, the two cathode rollers are arranged in parallel, and the photovoltaic product passes through the two cathode rollers, as shown in fig. 3, so that the photovoltaic product can be contacted on both sides.

Example two

As shown in fig. 3 and 4, what demonstrate is an electroplating assembly for electroplating solar photovoltaic product, including negative pole subassembly 1, anode assembly and the running roller 2 that blocks water, the running roller 2 that blocks water is established in anode assembly's both sides, anode assembly includes blade running roller 31, nozzle 32 and two anode plates 33, and in vertical direction, blade running roller 31 is established in the middle of two anode plates 33, all is equipped with the perforation on every anode plate 33, nozzle 32 one end intercommunication has electroplating liquid pipeline 34, and the other end passes perforation and towards two anode plates 33 in the middle of, photovoltaic product follow two anode plates 33 are middle to be passed through blade running roller 31, the spray direction of nozzle 32 on two anode plates 33 is towards the upper surface and the lower surface of photovoltaic product respectively. The anode plate 33 of the present embodiment may be an anode titanium mesh.

The anode assembly of this embodiment sprays the plating solution through the mode of spraying, specifically realizes through nozzle 32, and nozzle 32 can spray a large amount of plating solution to the photovoltaic product in the short time, and the jet flow volume is great, and the spray regime is wider moreover, and the mode that accessible set up a plurality of nozzles 32 covers whole photovoltaic product. Meanwhile, the degree of freedom of design of the mode of the nozzle 32 is better, and in the utility model, because the upper surface and the lower surface of the photovoltaic product need to be electroplated, the nozzle 32 can overcome the gravity of the electroplating solution to be sprayed onto the lower surface of the photovoltaic product even if immersion electroplating is not achieved.

The blade roller 31 in this embodiment mainly functions as a guide, and certainly, the blade roller 31 in the present invention may also have an auxiliary coating function, so that the plating solution can be better attached to the photovoltaic product.

In this embodiment, in order to make the electroplating assembly more integrated and modularized, the anode assembly and the water blocking roller 2 in this embodiment form an integrated module. The water blocking roller 2 is used for cleaning the electroplating solution on the photovoltaic product so that the surface of the photovoltaic product is relatively dry when the electroplating solution enters the next group of cathode assemblies 1. The photovoltaic product of the electroplating module in this embodiment is in dry form, whether from the inlet end or the outlet end, so the electroplating module of this embodiment should be understood more precisely as an anodization module. After the electroplating module is designed into an integral module, the whole anode electroplating function is equivalently used as a modular design, the electroplating module can be freely assembled on other frames 5 for free splicing and installation, and the universality is better.

In order to integrate the components conveniently, the integral module further includes a box 4, the anode assembly and the water blocking roller 2 are both installed in the box 4, and the box 4 is provided with a product inlet and a product outlet. The box 4 is provided with an installation plate 43, and the installation plate 43 is fixedly installed with the frame 5. The box 4 in this embodiment includes an upper box and a lower box, the upper box and the lower box are assembled, and the upper box is not shown in the figure.

In addition, after the tank 4 is designed, only a very small amount of plating solution flows out of the tank 4, and most of the plating solution sprayed from the nozzles 32 can be temporarily stored in the tank 4 for a short time, so that the photovoltaic product, both the upper surface and the lower surface, can be sufficiently contacted with the plating solution.

While the utility model has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the utility model is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the utility model as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. The utility model provides a negative pole subassembly for electroplating solar photovoltaic product, negative pole subassembly includes the cathode roller, and the cathode roller passes through conductive element and links with the power electricity, its characterized in that, the cathode roller includes the gyro wheel body, the gyro wheel body includes the outer peripheral face, be equipped with conductive fiber on the outer peripheral face, conductive fiber radially extends along the gyro wheel body, conductive fiber and gyro wheel body electrical contact.

2. The cathode assembly for electroplated solar photovoltaic products of claim 1, wherein the plurality of conductive fibers form carbon fiber strands, and the carbon fiber strands are distributed on the outer peripheral surface.

3. The cathode assembly of claim 2, wherein the carbon fiber strands comprise a fixed end and a free end, the fixed end is fixed to the roller body, and the free end is divergent.

4. The cathode assembly for electroplated solar photovoltaic products of claim 1, wherein said roller body is provided with a slot, and said conductive fibers are inserted into said slot.

5. The cathode assembly of claim 1, wherein the conductive fibers are welded or bonded to the roller body.

6. The cathode assembly for electroplated solar photovoltaic products of claim 1, wherein said conductive fibers are conductive carbon fibers.

7. The cathode assembly for electroplated solar photovoltaic products of claim 6, wherein the diameter of said conductive carbon fiber is 5-50 um; and/or the length of the conductive carbon fiber is 1 mm-50 mm.

8. The cathode assembly according to claim 1, wherein the cathode assembly comprises at least two cathode rollers, the two cathode rollers are arranged in parallel, and the photovoltaic product passes through the two cathode rollers.

9. A horizontal electroplating assembly for solar photovoltaic products, comprising a cathode assembly and an anode assembly, wherein the photovoltaic products form a closed loop when passing through the cathode assembly and the anode assembly, characterized in that the electroplating assembly adopts the cathode assembly of any one of claims 1 to 8.

10. The horizontal electroplating assembly for solar photovoltaic products according to claim 9, wherein the anode assembly comprises a blade roller, a nozzle and two anode plates, the blade roller is disposed between the two anode plates in the vertical direction, each anode plate is provided with a through hole, one end of the nozzle is communicated with the electroplating solution pipeline, the other end of the nozzle passes through the through hole and faces to the middle of the two anode plates, the photovoltaic products pass through the blade roller from the middle of the two anode plates, and the spraying directions of the nozzles on the two anode plates face to the upper surface and the lower surface of the photovoltaic product respectively.