CN218175154U - Solar cell coating device - Google Patents
Solar cell coating device Download PDFInfo
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- CN218175154U CN218175154U CN202220256535.5U CN202220256535U CN218175154U CN 218175154 U CN218175154 U CN 218175154U CN 202220256535 U CN202220256535 U CN 202220256535U CN 218175154 U CN218175154 U CN 218175154U
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Abstract
The utility model discloses a solar cell coating device, include: coating film groove, transmission module and coating film light source, its characterized in that: the coating tank is filled with electroplating solution, a plurality of metal anodes are arranged in the coating tank, an antireflection film is arranged on the light receiving surface of the solar cell, and a back electrode is arranged on the backlight surface of the solar cell; the transmission mechanism comprises a roller and a capillary layer arranged above the roller, the capillary layer comprises densely arranged capillary wires facing the roller, a transmission channel is reserved between the capillary layer and the roller, and the solar cell passes through the transmission channel; the capillary layer and the roller wheel are synchronously transmitted; the coating light source is used for irradiating the illuminated surface of the solar cell to be coated and generating photoproduction electric energy on the solar cell to be coated, the utility model discloses exert pressure to the battery piece through flexible capillary layer and prevent its removal, make it can be photic smoothly and accomplish the coating.
Description
Technical Field
The utility model relates to a solar cell preparation field especially relates to a solar cell coating device.
Background
In the current large-scale solar cell manufacturing, a screen printing method is usually adopted to realize the metallization process of the solar cell, but the height-width ratio of the grid lines formed by the screen printing is low, so that the light receiving surface of the solar cell is large in the shielding area of the grid lines, and the series resistance of the solar cell is large. In order to realize the application of electroplating in the large-scale manufacturing of solar cells, a roller transmission mode is usually adopted to transmit the solar cells into electroplating solution for electroplating, most process steps of the solar cells are completed, PN junctions, antireflection films, back fields (or back junctions) and back electrodes are formed, and the antireflection films in the electrode regions on the light receiving surfaces of the solar cells are removed. A seed layer and copper, or a seed layer and silver, or a seed layer and an electrode structure of copper and silver are formed on the electrode region on the light receiving surface by electroplating.
However, when the solar cell is transferred to the plating solution by using the roller method for electroplating, the solar cell may deviate from the transfer direction and float up and down or move left and right, and at this time, the solar cell needs to be transferred to the plating solution by using a matched roller pair including an upper roller and a lower roller. However, with the continuous reduction of the thickness of the silicon wafer for the solar cell (which is less than 200 μm), the requirements on the matched rollers, particularly the upper roller, are correspondingly increased, the matched rollers with the same structure of the upper roller set and the lower roller set easily cause the high fragmentation rate of the solar cell during electroplating, and no flexible conveying coating equipment exists at present.
Disclosure of Invention
The utility model overcomes the defects of the prior art and provides a solar cell coating device.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a solar cell coating device comprises: coating film groove, transmission module and coating film light source, its characterized in that: the coating tank is filled with electroplating solution, a plurality of metal anodes are arranged in the coating tank, an antireflection film is arranged on the light receiving surface of the solar cell, and a back electrode is arranged on the backlight surface of the solar cell; the transmission mechanism comprises a roller and a capillary layer arranged above the roller, the capillary layer comprises densely arranged capillary wires facing the roller, a transmission channel is reserved between the capillary layer and the roller, and the solar cell passes through the transmission channel; the capillary layer and the roller wheel are synchronously transmitted; the coating light source is used for irradiating the light receiving surface of the solar cell to be coated and generating photoproduction electric energy on the solar cell to be coated.
In a preferred embodiment of the present invention, the capillary wire is a non-conductive soft plastic wire.
In a preferred embodiment of the present invention, the capillary layer is located above the liquid level of the plating solution in the plating tank, and the free ends of the capillary filaments are immersed in the plating solution in the plating tank.
In a preferred embodiment of the present invention, the position of the root of the capillary is connected to an electroplating solution input pipeline for increasing the weight of the capillary.
In a preferred embodiment of the present invention, the capillary layer includes a plurality of capillary rollers corresponding to the rollers.
In a preferred embodiment of the present invention, the bottom of the coating tank is made of transparent polyethylene plate.
In a preferred embodiment of the present invention, the coating light source is disposed in the coating tank and includes a plurality of sets of light source strings disposed side by side, and the light source strings and the metal anode are arranged in a staggered manner or disposed on the metal anode.
In a preferred embodiment of the present invention, the coating light source is disposed at the outer bottom of the coating tank, and comprises a plurality of light emitting diodes connected in series and/or in parallel, the bottom of the coating tank is made of a transparent material, and the metal anodes are arranged in a staggered manner with the light emitting diodes.
In a preferred embodiment of the present invention, the electroplating solution includes a water-soluble nickel salt, boric acid, and a wetting agent.
The utility model provides a defect that exists among the background art, the utility model discloses possess following beneficial effect:
the utility model discloses a flexible capillary layer exerts pressure to the battery piece and prevents it from removing, makes it can photic completion coating film smoothly, and is further, through oozing the plating solution at capillary layer root to adjust capillary silk weight, make it can carry out the pertinence to the battery piece of different thickness and adjust.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
fig. 1 is a schematic plan view of the preferred embodiment of the present invention;
in the figure: 1. coating a film groove; 2. a metal anode; 3. a film coating light source; 4. a roller; 5. and (5) a capillary layer.
Detailed Description
The present invention will now be described in further detail with reference to the drawings, which are simplified schematic drawings illustrating, by way of illustration only, the basic structure of the invention and, thus, showing only the constituents relevant to the invention, and also, in the description of the invention, reference to "an embodiment", "one embodiment" or "another embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least some embodiments, but not necessarily all embodiments.
A solar cell coating apparatus as shown in fig. 1 includes: the solar cell comprises a coating tank 1, a transmission module, a coating light source 3, the coating tank 1, a plurality of metal anodes 2, an antireflection film on a light receiving surface of the solar cell, and a back electrode on a backlight surface, wherein the coating tank 1 is filled with electroplating solution; the transmission mechanism comprises a roller 4 and a capillary layer 5 arranged above the roller 4, the capillary layer 5 comprises a plurality of capillary rollers corresponding to the roller 4, the capillary layer 5 comprises densely arranged capillary filaments facing the roller 4, a transmission channel is reserved between the capillary layer 5 and the roller 4, and the solar cell passes through the transmission channel; the capillary layer 5 and the roller 4 are synchronously transmitted; the film coating light source 3 is used for irradiating the light receiving surface of the solar cell to be coated and generating photo-generated electric energy on the solar cell to be coated, the capillary wire adopts non-conductive soft plastic wire, preferably filamentous phenolic plastic, the utility model applies pressure to the cell by the flexible capillary layer 5 to prevent the cell from moving, so that the cell can be coated by smoothly receiving light,
in a preferred embodiment, the capillary layer 5 is located above the liquid level of the plating solution in the plating tank 1, the free end of the capillary wire can be immersed in the plating solution in the plating tank 1, the capillary layer 5 naturally hangs down above the liquid level, and the part below the liquid level is influenced by buoyancy, so that the pressure can be finely adjusted by the proportion of the capillary layer 5 above and below the liquid level.
In one embodiment, the root of the capillary wire is connected with an electroplating solution input pipeline for increasing the weight of the capillary wire, and the electroplating solution seeps out of the root of the capillary layer 5 to adjust the weight of the capillary wire, so that the battery pieces with different thicknesses can be adjusted in a targeted manner.
In a preferred embodiment, the bottom of the coating tank 1 is made of a transparent polyethylene plate, and the coating light source 3 is disposed in the coating tank 1 and includes a plurality of sets of light source strings disposed in parallel, the light source strings and the metal anodes 2 are arranged in a staggered manner or disposed on the metal anodes 2.
In another embodiment, the coating light source 3 is disposed at the outer bottom of the coating tank 1 and comprises a plurality of light emitting diodes connected in series and/or in parallel, the bottom of the coating tank 1 is made of a light-transmitting material, and the metal anodes 2 and the light emitting diodes are arranged in a staggered manner.
Preferably, the electroplating solution includes a water-soluble nickel salt, boric acid, and a wetting agent.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A solar cell film coating device comprises: coating film groove, transmission module and coating film light source, its characterized in that:
the film plating tank is filled with electroplating solution, a plurality of metal anodes are arranged in the film plating tank, an antireflection film is arranged on the light receiving surface of the solar cell, and a back electrode is arranged on the back light surface of the solar cell;
the transmission module comprises a roller and a capillary layer arranged above the roller, the capillary layer comprises densely arranged capillary wires facing the roller, a transmission channel is reserved between the capillary layer and the roller, and the solar cell passes through the transmission channel; the capillary layer and the roller wheel are synchronously transmitted;
the coating light source is used for irradiating the light receiving surface of the solar cell to be coated and generating photo-generated electric energy on the solar cell to be coated.
2. The solar cell coating apparatus according to claim 1, wherein: the capillary wire is made of non-conductive soft plastic wires.
3. The solar cell coating apparatus according to claim 1, wherein: the capillary layer is positioned above the liquid level of the electroplating solution in the film plating tank, and the free end of the capillary can be immersed in the electroplating solution in the film plating tank.
4. The solar cell film coating device according to claim 1, wherein: the root position of the capillary wire is connected with an electroplating solution input pipeline for increasing the weight of the capillary wire.
5. The solar cell coating apparatus according to claim 1, wherein: the capillary layer comprises a plurality of capillary rollers corresponding to the roller wheels.
6. The solar cell film coating device according to claim 1, wherein: the bottom of the film plating groove is made of a transparent polyethylene plate.
7. The solar cell film coating device according to claim 1, wherein: the coating light source is arranged in the coating tank and comprises a plurality of groups of light source strings arranged in parallel, and the light source strings and the metal anode are arranged in a staggered mode or are arranged on the metal anode.
8. The solar cell film coating device according to claim 1, wherein: the coating light source is arranged at the outer bottom of the coating tank and comprises a plurality of light-emitting diodes connected in series and/or in parallel, the bottom of the coating tank is made of a light-transmitting material, and the metal anodes and the light-emitting diodes are distributed in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220256535.5U CN218175154U (en) | 2022-02-08 | 2022-02-08 | Solar cell coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220256535.5U CN218175154U (en) | 2022-02-08 | 2022-02-08 | Solar cell coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218175154U true CN218175154U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220256535.5U Active CN218175154U (en) | 2022-02-08 | 2022-02-08 | Solar cell coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218175154U (en) |
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2022
- 2022-02-08 CN CN202220256535.5U patent/CN218175154U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230613 Address after: 201306 building C, No. 888, Huanhu West 2nd Road, Lingang New District, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Shanghai Changhuo Microelectronics Technology Co.,Ltd. Address before: Room 235, Xingming Building, No. 288, Xingming Street, Suzhou Industrial Park, Suzhou Area, Jiangsu Province (Jiangsu) Pilot Free Trade Zone, 215123 Patentee before: Suzhou Changming microelectronics technology partnership (L.P.) |
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| TR01 | Transfer of patent right |