Solar cell grid line mask tool

Abstract

The utility model discloses a solar cell grid line mask tool, which is characterized by comprising a film coating bottom plate, a film coating pressing frame, a pressing strip and a mask strip, the film coating bottom plate is provided with a cell placing table corresponding to the size of a cell, the side edge of the cell placing table is provided with a cell positioning clamping strip, and the cell positioning clamping strip is provided with a plurality of mask strips. The middle of the film-coating pressing frame is hollowed out and is matched with the battery piece placing table, the film-coating pressing frame is fixedly locked on the film-coating bottom plate through a fastening screw sleeved with a spring, a positioning groove is formed in the position, corresponding to a grid line of a battery piece, of the upper surface of the film-coating pressing frame, and the mask strip is embedded into the positioning groove of the film-coating pressing frame and is pressed and fixed through a pressing strip. According to the utility model, the mask body made of the polytetrafluoroethylene material is used for replacing the traditional high-temperature adhesive tape, so that the grid line of the battery piece is effectively protected from being influenced, good conductivity is kept, the mask has the advantages of accurate positioning, high efficiency, short pasting time, difficulty in deformation, quickness in use and reusability, the economic benefit is greatly improved, and energy conservation and cost reduction are realized.

Description

Technical Field

[0001] This utility model relates to the field of solar cell technology, and in particular to a solar cell grid line mask fixture. Background Technology

[0002] Solar energy, as a widely distributed, inexhaustible, and green energy source, is one of the important energy sources for the sustainable development of human society. Currently, the main form of solar energy utilization is photovoltaic power generation. Solar cells can convert solar energy into electrical energy, which is easy to store and transport, and can thus be applied to various fields.

[0003] During the production of solar cells, when performing the vapor deposition process on solar cells, the grid lines of the solar cell electrodes need to be shielded to prevent contamination by the coating material, which would affect the conductivity. Traditionally, the grid line mask is pasted onto the coating frame using high-temperature adhesive tape. However, the high-temperature adhesive tape is thin and easily deformed, resulting in low pasting efficiency. It is estimated that pasting each frame takes 8-10 minutes and can only be used 3-5 times, which is time-consuming and labor-intensive.

[0004] Therefore, it is necessary to design a new type of mask fixture for solar cell grid line evaporation to optimize the process flow and improve production efficiency. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a high-efficiency, fast, and reusable solar cell grid line mask fixture.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a solar cell grid line masking fixture, including a coating base plate, a coating frame, a pressure strip, and a mask strip. The coating base plate is provided with a cell placement platform corresponding to the size of the cell. The cell placement platform is provided with a cell positioning clip on its side. The coating frame has a hollow center to fit the cell placement platform. The coating frame is fixed to the coating base plate by fastening screws with springs. The upper surface of the coating frame has a positioning groove corresponding to the position of the cell grid line. The mask strip is embedded in the positioning groove of the coating frame and is pressed and fixed by the pressure strip.

[0007] Furthermore, the positioning groove is 0.5mm deep and 1mm wide, and the groove surface is smooth and burr-free.

[0008] Furthermore, the mask strip is made of polytetrafluoroethylene and is processed into strips that are adapted to the grid line specifications and dimensions of various battery cells.

[0009] Furthermore, the pressure strip is secured to the coating pressure frame by an internal hexagon screw, thus locking the mask strip in place.

[0010] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages:

[0011] This invention uses a mask made of polytetrafluoroethylene (PTFE) to replace traditional high-temperature adhesive tape for grid line masking. During the vapor deposition process of solar cells, it effectively protects the grid lines of the cells from damage and maintains good conductivity. It has the advantages of accurate positioning, high efficiency, short bonding time, resistance to deformation, quick use, and reusability, greatly improving economic efficiency and achieving energy saving and cost reduction. The tooling simplifies auxiliary materials and steps and can be flexibly and easily made into tooling for use with other specifications of solar cells, providing technical guidance for further optimization of the process flow. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the coating substrate structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the coating frame structure of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Example

[0018] refer to Figure 1-3A solar cell grid line masking fixture is provided. The fixture is made of aluminum plate with a smooth and neat surface. The fixture is available in sizes from 156# to 210#. It includes a coating base plate 1, a coating frame 2, a pressure strip 4, and a mask strip 3. The coating base plate 1 is equipped with a cell placement platform 11 corresponding to the size of the solar cell. The cell placement platform 11 has a cell positioning clip 12 on its side. The coating frame 2 has a hollow center to fit the cell placement platform 11. The coating frame 2 is fixed to the coating base plate 1 by fastening screws 5 with springs 6. The upper surface of the coating frame 2 has a positioning groove 7 corresponding to the position of the solar cell grid line. The positioning groove 7 is 0.5 mm deep and 1 mm wide, and the groove surface is smooth and burr-free. The mask strip 3 is embedded in the positioning groove 7 of the coating frame and is pressed and fixed by the pressure strip 4.

[0019] The solar cell is an N-type or P-type crystalline silicon solar cell, and the outer electrode of the cell is connected by metal grid lines.

[0020] The mask strip 3 is made of polytetrafluoroethylene and is processed into strips that can adapt to the grid line specifications and dimensions of various battery cells.

[0021] The pressure strip 4 is fixed to the coating pressure frame 2 by the internal hex screw 8, thus locking the mask strip 3.

[0022] Tooling usage: First, insert the mask strip 3 into the positioning groove 7 of the coating pressure frame and fasten it; place the battery cell into the coating base plate 1 with the grid line facing up, press the battery cell with the coating pressure frame 2, and align the mask strip 3 with the grid line; then use the fastening screw 5 with spring 6 to lock the pressure frame and the base, and the mask tooling is completed and enters the equipment for vapor deposition.

[0023] This invention uses a mask made of polytetrafluoroethylene (PTFE) to replace traditional high-temperature adhesive tape for grid line masking. During the vapor deposition process of solar cells, it effectively protects the grid lines of the cells from damage and maintains good conductivity. It has the advantages of accurate positioning, high efficiency, short bonding time, resistance to deformation, quick use, and reusability, greatly improving economic efficiency and achieving energy saving and cost reduction. The tooling simplifies auxiliary materials and steps and can be flexibly and easily made into tooling for use with other specifications of solar cells, providing technical guidance for further optimization of the process flow.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solar cell grid line mask fixture, characterized in that: The coating includes a coating base plate (1), a coating frame (2), a pressure strip (4), and a mask strip (3). The coating base plate (1) is equipped with a battery cell placement platform (11) corresponding to the size of the battery cell. The battery cell placement platform (11) is provided with a battery cell positioning clip (12) on its side. The coating frame (2) has a hollow center that fits the battery cell placement platform (11). The coating frame (2) is fixed to the coating base plate (1) by a fastening screw (5) fitted with a spring (6). A positioning groove (7) is opened on the upper surface of the coating frame (2) at the position corresponding to the grid line of the battery cell. The mask strip (3) is embedded in the positioning groove (7) of the coating frame and is pressed and fixed by the pressure strip (4).

2. The solar cell grid line mask fixture according to claim 1, characterized in that: The positioning groove (7) is 0.5 mm deep and 1 mm wide, and the groove surface is smooth and burr-free.

3. The solar cell grid line mask fixture according to claim 1, characterized in that: The mask strip (3) is made of polytetrafluoroethylene and is processed into strips that are adapted to the grid line specifications and dimensions of various battery cells.

4. The solar cell grid line mask fixture according to claim 1, characterized in that: The pressure strip (4) is fixed to the coating pressure frame (2) by the internal hex screw (8), thus locking the mask strip (3).

Images