Crystalline silicon solar cell surface passivation device

Abstract

The utility model relates to the technical field of solar cell manufacturing, in particular to a crystalline silicon solar cell surface passivation device which comprises a passivation base, and a connecting pad is fixedly connected to the center of a groove of the passivation base. A battery piece is arranged in a passivation film base in an electric drawing mode through a structure facilitating feeding and discharging, the battery piece can be smoothly arranged in the passivation film base after being filled through matching of limiting, protecting and buffering structures, and therefore the probability that the battery piece is scratched is reduced; and the production efficiency and the yield of the crystalline silicon solar cell are relatively improved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell manufacturing, and particularly relates to a surface passivation device for crystalline silicon solar cells. Background Art

[0002] A plasma enhanced chemical vapor deposition system ionizes a gas containing atoms of a thin film component by means of microwave or radio frequency, etc., to form a plasma locally. The plasma has strong chemical activity and is prone to reaction, and a desired thin film is deposited on a substrate. In order to enable a chemical reaction to occur at a relatively low temperature, the activity of the plasma is utilized to promote the reaction, so this CVD is called plasma enhanced chemical vapor deposition (PECVD). A low-pressure chemical vapor deposition device (LPCVD) forms a solid substance by a gas-phase chemical reaction between gaseous initial compounds at a certain temperature and deposits it on a substrate.

[0003] In the modern solar photovoltaic industry, PECVD is often used to prepare antireflection films such as silicon nitride films, silicon carbide films, silicon oxide films, etc.; LPCVD is used to prepare silicon oxide films, amorphous silicon and microcrystalline silicon thin films, and tunneling oxidation passivation thin films for improving the open-circuit voltage of the battery. However, when existing solar cells are produced, a vertical plug-in and placement method is often used to prepare a thin film on the surface of the battery wafer, which is likely to cause damage to the battery wafer, and it is inconvenient to position the battery wafer, and it is easy to cause the deformation of the battery wafer due to inconsistent film preparation positions. For this reason, we propose a surface passivation device for crystalline silicon solar cells. Content of the Utility Model

[0004] Aiming at the problems in the prior art, the utility model provides a surface passivation device for crystalline silicon solar cells.

[0005] The technical solution adopted by the utility model to solve its technical problems is a surface passivation device for crystalline silicon solar cells, including a passivation base. A connecting pad is fixedly connected to the center of the groove of the passivation base. A radio frequency base plate is fixedly connected to the center of the connecting pad. The passivation base is provided with limiting grooves on both sides of the connecting pad. A telescopic chassis is fixedly connected to one side wall of the passivation base. An electric telescopic machine is arranged at the extending end of the telescopic chassis, and the electric telescopic machine penetrates through the side wall of the passivation base.

[0006] One end of the electric telescopic machine away from the telescopic machine box is fixedly connected to the side wall of the first fixed frame. A limiting roller for rotation inside the limiting groove is arranged on the side wall of the first fixed frame. A plug-in connecting piece is fixedly connected to the side wall of the first fixed frame away from the limiting roller. The plug-in connecting piece is inserted through the inside of the plug-in connection groove. The plug-in connection groove is opened on one side of the second fixed frame. An internal backing plate is fixedly connected to the inner side wall of the second fixed frame, and an internal backing plate of the same size and mirror image as the second fixed frame is fixedly connected to the inner wall of the first fixed frame.

[0007] By adopting the above technical scheme, the battery cells are placed inside the passivation film base by means of electric drawing through a structure convenient for loading and unloading. And through the cooperation of various limiting, protecting and buffering structures, the battery cells can be placed in the passivation base relatively smoothly after being loaded, thus reducing the probability of scratching the battery cells, relatively improving the production efficiency and the yield of crystalline silicon solar cells, and saving costs.

[0008] Specifically, there are two telescopic machine boxes and electric telescopic machines. The electric telescopic machine is fixedly connected to the same side wall of the second fixed frame and the first fixed frame.

[0009] By adopting the above technical scheme, the operation of installing and removing the battery cells is carried out by running the electric telescopic machine to draw the fixed frame.

[0010] Specifically, buffer pads are fixedly connected to the side walls of the first fixed frame and the second fixed frame on one side of the plug-in connecting piece and the plug-in connection groove.

[0011] By adopting the above technical scheme, the buffer pads are used to prevent the battery cells from being damaged due to excessive force during loading.

[0012] Specifically, a communicating protection pipe is connected through the bottom end of the passivation base.

[0013] By adopting the above technical scheme, the pipeline inside the communicating protection pipe is used to provide the energy source for the RF base plate.

[0014] Specifically, a top sealing cover is arranged above the passivation base, and a sealing gasket for sealing the space is arranged on the bottom surface of the top sealing cover.

[0015] By adopting the above technical scheme, the passivation base is in a safe sealed space when generating the film through the top sealing cover and the sealing gasket.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The technical solution of this application designs a passivation base, a limiting groove, a connecting pad, a telescopic chassis, an electric telescopic machine, a first fixing frame, a second fixing frame, a limiting roller, an internal cushion plate, a plug-in connecting part, a plug-in connecting groove and a buffer pad, so as to place the battery chip into the passivation film base by means of electric pulling, and through the cooperation of various limiting, protecting and buffering structures, the battery chip can be placed in the passivation base relatively smoothly after being loaded, thereby reducing the probability of scratching the battery chip, relatively improving the production efficiency and yield rate of crystalline silicon solar cells, and saving costs. Brief Description of the Drawings

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 Is an axonometric view of the present utility model;

[0020] Figure 2 Is a schematic diagram of the surface structure of the passivation base of the present utility model;

[0021] Figure 3 Is a schematic diagram of the split structure of the first fixing frame and the second fixing frame of the present utility model;

[0022] In the figure: 1. Passivation base; 2. Limiting groove; 3. Connecting pad; 4. RF base plate; 5. Connecting protection pipe; 6. Telescopic chassis; 7. Electric telescopic machine; 8. First fixing frame; 9. Second fixing frame; 10. Limiting roller; 11. Internal cushion plate; 12. Plug-in connecting part; 13. Plug-in connecting groove; 14. Buffer pad; 15. Top sealing cover; 16. Sealing rubber pad. Detailed Embodiment

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please refer to Figures 1 - 3 , an embodiment of the present utility model provides a technical solution: a surface passivation device for a crystalline silicon solar cell, including a passivation base 1, a connecting pad 3 is fixedly connected to the center of the groove of the passivation base 1, a RF base plate 4 is fixedly connected to the center of the connecting pad 3, the passivation base 1 is provided with limiting grooves 2 on both sides of the connecting pad 3, a telescopic chassis 6 is fixedly connected to one side wall of the passivation base 1, an electric telescopic machine 7 is arranged at the extending end of the telescopic chassis 6, and the electric telescopic machine 7 penetrates through the side wall of the passivation base 1;

[0025] One end of the electric telescoping machine 7 away from the telescoping machine box 6 is fixedly connected to the side wall of the first fixed frame 8. A limit roller 10 for rotating inside the limit groove 2 is provided on the side wall of the first fixed frame 8. A plug-in connecting piece 12 is fixedly connected to the side wall of the first fixed frame 8 away from the limit roller 10. The plug-in connecting piece 12 is inserted through and connected to the inside of the plug-in connection groove 13. The plug-in connection groove 13 is opened on one side of the second fixed frame 9. An internal backing plate 11 is fixedly connected to the inner side wall of the second fixed frame 9, and an internal backing plate 11 of the same size and mirror image as the second fixed frame 9 is fixedly connected to the inner wall of the first fixed frame 8.

[0026] During use, the battery cells are placed inside the passivation film base by means of an electric pulling method through a structure that facilitates loading and unloading. And through the cooperation of various limiting, protecting and buffering structures, the battery cells can be placed in the passivation base relatively smoothly after being loaded, thereby reducing the probability of scratching the battery cells, relatively improving the production efficiency and yield of crystalline silicon solar cells, and saving costs.

[0027] As shown in the figure, there are two telescoping machine boxes 6 and electric telescoping machines 7. The electric telescoping machine 7 is fixedly connected to the same side wall of the second fixed frame 9 and the first fixed frame 8.

[0028] During use, the operation of installing and removing the battery cells is carried out by running the electric telescoping machine 7 to pull the fixed frame.

[0029] As shown in the figure, buffer pads 14 are fixedly connected to the side walls of the first fixed frame 8 and the second fixed frame 9 on one side of the plug-in connecting piece 12 and the plug-in connection groove 13.

[0030] During use, the buffer pads 14 are used to prevent the battery cells from being damaged due to excessive loading force when installing the battery cells.

[0031] As shown in the figure, a communicating protection pipe 5 is connected through the bottom end of the passivation base 1.

[0032] During use, the pipeline in the communicating protection pipe 5 is used to provide the energy source for the RF base plate 4.

[0033] As shown in the figure, a top sealing cover 15 is arranged above the passivation base 1. A sealing gasket 16 for sealing the space is arranged on the bottom surface of the top sealing cover 15.

[0034] During use, the passivation base 1 is in a safe sealed space when generating the film through the top sealing cover 15 and the sealing gasket 16.

[0035] Working principle and usage process of the present utility model: Firstly, the electric telescopic machine 7 inside the telescopic chassis 6 pushes the first fixed frame 8 and the second fixed frame 9 outside the passivation base 1. Subsequently, the connection state between the first fixed frame 8 and the second fixed frame 9 is removed, and the battery cell is placed on the surface of the inner cushion plate 11. Then, the first fixed frame 8 and the second fixed frame 9 are locked and closed by inserting the plug-in connecting member 12 into the plug-in connection groove 13. The buffer pad 14 is used to prevent damage to the battery cell caused by excessive operation. Subsequently, the first fixed frame 8 and the second fixed frame 9 are respectively connected and locked to the two electric telescopic machines 7, and the electric telescopic machine 7 is operated to contract. The limit rollers 10 on the side walls of the first fixed frame 8 and the second fixed frame 9 limit the moving directions of the first fixed frame 8 and the second fixed frame 9 along the racks in the limit grooves 2 until they completely enter the inside of the passivation base 1. Subsequently, the top sealing cover 15 moves downward to be spliced and closed with the passivation base 1, and a sealed space is formed through the sealing gasket 16. After being completely closed, the radio frequency base plate 4 at the center of the connection pad 3 operates, and energy is provided through the communication protection tube 5 to perform passivation film treatment on the battery cell.

[0036] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A surface passivation device for crystalline silicon solar cells, characterized in that, It includes a passivation base (1), a connection pad (3) is fixedly connected to the center of the groove of the passivation base (1), a radio frequency base plate (4) is fixedly connected to the center of the connection pad (3), limiting grooves (2) are opened on both sides of the connection pad (3) of the passivation base (1), a telescopic chassis (6) is fixedly connected to one side wall of the passivation base (1), an electric telescopic machine (7) is arranged at the extending end of the telescopic chassis (6), and the electric telescopic machine (7) penetrates through the side wall of the passivation base (1); One end of the electric telescopic machine (7) away from the telescopic chassis (6) is detachably installed on the side wall of the first fixed frame (8), a limiting roller (10) for rotating inside the limiting groove (2) is arranged on the side wall of the first fixed frame (8), a plug-in connecting piece (12) is fixedly connected to the side wall of the first fixed frame (8) away from the limiting roller (10), the plug-in connecting piece (12) is inserted through the inside of the plug-in connection groove (13), the plug-in connection groove (13) is opened on one side of the second fixed frame (9), an internal backing plate (11) is fixedly connected to the inner side wall of the second fixed frame (9), and an internal backing plate (11) of the same size and mirror image as the second fixed frame (9) is fixedly connected to the inner wall of the first fixed frame (8).

2. The surface passivation device for a crystalline silicon solar cell according to claim 1, wherein, There are two telescopic chassis (6) and electric telescopic machines (7), and the electric telescopic machine (7) is detachably connected to the same side wall of the second fixed frame (9) and the first fixed frame (8).

3. The surface passivation device for a crystalline silicon solar cell according to claim 1, wherein, Buffer pads (14) are fixedly connected to the side walls of the first fixed frame (8) and the second fixed frame (9) on one side of the plug-in connecting piece (12) and the plug-in connection groove (13).

4. A surface passivation device for a crystalline silicon solar cell according to claim 1, characterized in that, A communicating protection pipe (5) is connected through the bottom end of the passivation base (1).

5. A passivation device for the surface of a crystalline silicon solar cell according to claim 1, characterized in that, A top sealing cover (15) is arranged above the passivation base (1), and a sealing rubber pad (16) for sealing the space is arranged on the bottom surface of the top sealing cover (15).

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