Fast-insertion top tooth mechanism and quartz boat

Abstract

The utility model relates to the technical field of photovoltaic cell production, and discloses a fast-insertion top tooth mechanism and a quartz boat. The quick-insertion top tooth mechanism comprises at least four rows of top tooth structures which are sequentially arranged at intervals from left to right; the middle top tooth structure is inserted and limited at the middle position of the silicon wafer, and the two rows of top tooth structures at the edges are inserted and limited at the left edge and the right edge of the silicon wafer respectively; each row of top tooth structures is provided with a plurality of top tooth bodies which are sequentially distributed front and back, and the height of the top tooth bodies of the middle top tooth structures is larger than that of the top tooth bodies of the two rows of top tooth structures on the edges; the upper end part of the top tooth main body is provided with an opening for inserting and installing a silicon wafer; and the opening of the top tooth main body of the middle top tooth structure is larger than the openings of the top tooth main bodies of the two rows of top tooth structures on the edges. The fast-inserting top tooth mechanism can effectively avoid the phenomenon of card clamping, and is beneficial to reducing the fragment rate and improving the production line efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic cell production technical field, concretely relates to a fast insertion top tooth mechanism and quartz boat with the fast insertion top tooth mechanism. BACKGROUND

[0002] In the production process of photovoltaic cells, the silicon wafer needs to go through multiple processes, such as diffusion, oxidation, annealing, etc. These processes are usually carried out at high temperatures. Quartz boats can maintain stability in high-temperature environments. Therefore, during the high-temperature processing process, quartz boats are often used as containers to carry silicon wafers, and top tooth structures are used to limit the silicon wafers to ensure that the silicon wafers are stably carried in the quartz boat during high-temperature processing, thereby ensuring the quality of photovoltaic cells.

[0003] However, during the production of photovoltaic cells, after high-temperature diffusion and single-side poly-si (backside doped amorphous silicon) of the silicon wafer, the originally flat cross-section of the silicon wafer is usually difficult to maintain flat and may exhibit warping. Therefore, during the process of double-sided bonding of adjacent two silicon wafers, the gap between the edge positions of the two silicon wafers is large, which makes it difficult for the two silicon wafers to be completely bonded. This phenomenon causes the two silicon wafers to be unable to be smoothly placed into the opening of the top tooth during the wafer placement process, which easily causes the wafer to be stuck, thereby increasing the wafer breakage rate during the production of photovoltaic cells and reducing the production efficiency of photovoltaic cells.

[0004] Moreover, the existing top tooth structure, such as the top tooth structure shown in the publication numbers CN216213314U and CN216719895U, usually uses a double-row top tooth structure to install a single-row silicon wafer, and the top teeth of the two rows of top tooth structures have the same height. Although this reduces the bonding angle of the bottom positions of adjacent two silicon wafers, the edge positions of the two silicon wafers are not restrained, and the wafer is still likely to be stuck during the wafer placement process, making it difficult for the silicon wafer to be smoothly inserted into the opening of the top tooth. SUMMARY

[0005] The utility model aims at overcoming the deficiency of prior art, provides a kind of fast insertion top tooth mechanism and quartz boat with the fast insertion top tooth mechanism.

[0006] Based on this, the utility model discloses a kind of fast insertion top tooth mechanism, including at least four rows of top tooth structures from left to right sequentially interval arrangement;Middle top tooth structure is inserted and is limited in the middle position of silicon wafer, and the edge two rows of top tooth structures are respectively inserted and are limited in the left and right edge positions of the silicon wafer;

[0007] Each row of top tooth structures is provided with a plurality of top tooth bodies distributed in sequence from front to back, and the height of the top tooth body of the middle top tooth structure is greater than the height of the top tooth body of the edge two rows of top tooth structures.

[0008] The upper end of the top tooth body is provided with an opening for inserting and mounting the silicon wafer, and the opening size of the top tooth body of the middle two rows of top tooth structures is larger than that of the top tooth body of the edge two rows of top tooth structures.

[0009] Preferably, the number of the middle two rows of top tooth structures is at least two rows, and the height of the top tooth body of the middle two rows of top tooth structures is 3-4 cm larger than that of the edge two rows of top tooth structures.

[0010] Further preferably, the opening size of the top tooth body of the middle two rows of top tooth structures is in the range of 0.8-1 mm.

[0011] Preferably, the opening size of the top tooth body of the edge two rows of top tooth structures is in the range of 0.6-0.8 mm.

[0012] Preferably, the thickness of the silicon wafer is 110-150 nm, and two silicon wafers are inserted and connected together to be limited in the opening of the top tooth body.

[0013] Preferably, the fast-inserting top tooth mechanism further comprises a base for mounting the top tooth structure.

[0014] Further preferably, the base is provided with at least four mounting plates extending upward to respectively mount the four rows of top tooth structures.

[0015] The mounting plate is provided with a mounting space for inserting and mounting the lower end of the top tooth structure, and the side surface of the mounting plate is further provided with a pressing baffle for blocking the mounting space and a fastener for fastening the top tooth structure; one end of the fastener penetrates the pressing baffle into the mounting space and abuts against the top tooth structure to fasten and mount the top tooth structure in the mounting space.

[0016] More preferably, the fastener is a threaded fastener.

[0017] Preferably, the top tooth structure is of ceramic material.

[0018] The utility model discloses also a kind of quartz boat, including boat body;The boat body is installed with the fast-inserting top tooth mechanism of the utility model content above described.

[0019] Compared with the prior art, the utility model at least includes the following beneficial effects:

[0020] Compared with the edge two-row top tooth structure, since the top tooth body of the middle top tooth structure is higher, and the opening of the top tooth body of the middle top tooth structure is larger, in the film placing process, the opening of the top tooth body of the middle top tooth structure will first bind the middle position of the two silicon wafers by the plug-in limiting mode, and then in the fast plug-in process, the opening of the top tooth body of the edge two-row top tooth structure binds the edge position of the two silicon wafers. In this way, after double binding, the bottom, middle and edge positions of the two silicon wafers inserted into the same opening are all bound, at this time, the bonding angle of the two silicon wafers will be greatly reduced, the two silicon wafers can be more smoothly inserted into the opening of the top tooth body, the card frequency is greatly reduced, and the card times are reduced, the card problem is effectively solved, and then the broken piece rate in the photovoltaic cell piece manufacturing process is reduced, and the production line efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of a fast plug-in top tooth mechanism of the embodiment.

[0022] Figure 2 It is a front view of a fast plug-in top tooth mechanism of the embodiment.

[0023] Figure 3 It is a side view of a fast plug-in top tooth mechanism of the embodiment.

[0024] Figure 4 It is a side view of a top tooth body of a fast plug-in top tooth mechanism of the embodiment.

[0025] Explanation of the attached drawings: the first row of top tooth structure 1; the second row of top tooth structure 2; the third row of top tooth structure 3; the fourth row of top tooth structure 4; the top tooth structure 5; the top tooth body 51; the opening 511; the base 6; the mounting plate 61; the compression baffle 7; the fastener 8; the silicon wafer 9. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0027] EMBODIMENT

[0028] A fast plug-in top tooth mechanism of the embodiment, see Figures 1-2, including at least four rows of top tooth structures 5 arranged from left to right in sequence, respectively referred to as: the first row of top tooth structures 1, the second row of top tooth structures 2, the third row of top tooth structures 3, and the fourth row of top tooth structures 4. That is, the quick insertion top tooth mechanism is provided with at least four rows of top tooth structures 5 to insert each row of silicon wafers 9. Among them, the two middle rows of top tooth structures 5 (i.e. the second row of top tooth structures 2 and the third row of top tooth structures 3) insert the middle position defined in the silicon wafer 9. And the two edge rows of top tooth structures 5 (i.e. the first row of top tooth structures 1 and the fourth row of top tooth structures 4) respectively insert the left and right edge positions defined in the silicon wafer 9; Specifically, the first row of top tooth structures 1 inserts the left edge position of the silicon wafer 9, and the fourth row of top tooth structures 4 inserts the right edge position of the silicon wafer 9.

[0029] It should be noted that if the quick insertion top tooth mechanism only contains three rows of top tooth structures 5 arranged from left to right in sequence, the gap between each row of top tooth structures 5 is too far, and the opening of the silicon wafer 9 is not enough. Therefore, the quick insertion top tooth mechanism of the embodiment includes at least four rows of top tooth structures 5.

[0030] In an example of the embodiment, the top tooth structure 5 is preferably made of ceramic material. In other examples of the embodiment, the top tooth structure 5 can also be selected from other high-temperature-resistant materials.

[0031] Each row of top tooth structures 5 is provided with a plurality of top tooth bodies 51 (as shown in Figure 1 , 3 ) arranged in sequence from front to back; the height of the top tooth body 51 of the two middle rows of top tooth structures 5 (the second row of top tooth structures 2 and the third row of top tooth structures 3) is greater than the height of the top tooth body 51 of the two edge rows of top tooth structures 5 (the first row of top tooth structures 1 and the fourth row of top tooth structures 4) (as shown in Figure 2 ).

[0032] Moreover, the upper end of the top tooth body 51 is provided with an opening 511 (as shown in Figure 4 ) for inserting and installing the silicon wafer 9; the size of the opening 511 of the top tooth body 51 of the two middle rows of top tooth structures 5 (the second row of top tooth structures 2 and the third row of top tooth structures 3) is greater than the size of the opening 511 of the top tooth body 51 of the two edge rows of top tooth structures 5 (the first row of top tooth structures 1 and the fourth row of top tooth structures 4) (as shown in Figure 4 , the size of the opening 511 of the top tooth body 51 is marked as L).

[0033] In practice, as shown in Figure 1 , 3 , each row of silicon wafers 9 includes a plurality of groups of silicon wafers 9 arranged in sequence from front to back, and a group of silicon wafers 9 includes two silicon wafers 9 that adhere to each other.

[0034] Compared with the edge two-row top tooth structure 5, the top tooth body 51 of the middle two-row top tooth structure 5 is higher, and the opening 511 of the top tooth body 51 of the middle two-row top tooth structure 5 is larger. Therefore, during the wafer placing process of the robot, the opening 511 of the top tooth body 51 of the middle two-row top tooth structure 5 first binds the middle position of the two silicon wafers 9 by the plug-in limiting mode, and then, during the plug-in process, the opening 511 of the top tooth body 51 of the edge two-row top tooth structure 5 binds the edge position of the two silicon wafers 9 by the plug-in limiting mode. In this way, after double binding, the bottom, middle and edge positions of the two silicon wafers 9 plugged into the same opening 511 are all bound, which greatly reduces the bonding angle of the two silicon wafers 9, makes the two silicon wafers 9 more smoothly plug into the opening 511 of the top tooth body 51, greatly reduces the card frequency and the card times, effectively solves the card problem, and further helps to reduce the wafer breakage rate in the photovoltaic cell wafer manufacturing process and improve the production line efficiency.

[0035] Specifically, the height of the top tooth body 51 of the middle two-row top tooth structure 5 is 3-4 cm higher than the height of the top tooth body 51 of the edge two-row top tooth structure 5. For example, if the height of the top tooth body 51 of the middle two-row top tooth structure 5 is 28 cm, the height of the top tooth body 51 of the edge two-row top tooth structure 5 is 25-24 cm (preferably 24 cm).

[0036] In practice, the thickness of the silicon wafer 9 is 110-150 nm (such as 110 nm, 120 nm, 130 nm, 140 nm or 150 nm).

[0037] Specifically, the size of the opening 511 of the top tooth body 51 of the middle two-row top tooth structure 5 is in the range of 0.8 mm-1 mm (such as 0.81 mm, 0.85 mm, 0.9 mm, 0.95 mm or 1 mm). The size of the opening 511 of the top tooth body 51 of the edge two-row top tooth structure 5 is in the range of 0.6 mm-0.8 mm (such as 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm or 0.8 mm). The sum of the thicknesses of the two silicon wafers 9 to be bonded is less than the size of the opening 511 of the top tooth body 51 of the edge two-row top tooth structure 5, so that the two silicon wafers 9 can be quickly inserted into the opening 511 of the top tooth body 51 of the edge two-row top tooth structure 5.

[0038] The fast plug-in top tooth mechanism of the embodiment, referring to Figures 1-3 Further comprising a base 6 for installing the top tooth structure 5. Specifically, the base 6 is provided with at least four mounting plates 61 extending upward to respectively install four rows of top tooth structures 5. That is, each mounting plate 61 is used to install a corresponding row of top tooth structures 5 to achieve stable installation of the four rows of top tooth structures 5 on the base 6.

[0039] In practice, the mounting plate 61 is provided with a mounting space for inserting the lower end of the top tooth structure 5, and the side of the mounting plate 61 is further provided with a pressing baffle 7 for blocking the mounting space and a fastener 8 for fastening the top tooth structure 5. One end of the fastener 8 penetrates the pressing baffle 7 into the mounting space and abuts against the side of the top tooth structure 5, thereby pushing the top tooth structure 5 to make the other side of the top tooth structure 5 abut against the inner side wall of the mounting space of the mounting plate 61. In this way, the top tooth structure 5 can be fastened and mounted in the mounting space to prevent the top tooth structure 5 from shaking due to insecure fixation.

[0040] In an example of the embodiment, the fastener 8 is preferably a threaded fastener. Of course, in other examples of the embodiment, the fastener 8 can also be other fasteners.

[0041] A quartz boat of the embodiment includes a boat body, and the boat body is provided with the quick-insertion top tooth mechanism of the embodiment.

[0042] Although the preferred embodiments of the utility model have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0043] The above describes the technical solutions provided by the utility model in detail, and the principles and implementation manners of the utility model are described by applying specific examples; the above embodiment descriptions are only used to help understand the method of the utility model and its core idea; meanwhile, for those skilled in the art, according to the idea of the utility model, the specific implementation manners and application ranges will have changes; in conclusion, the content of the specification should not be understood as limiting the utility model.

Claims

1. A quick plug top tooth mechanism, characterized by, The fast-inserting top tooth mechanism comprises at least four rows of top tooth structures arranged in sequence from left to right; the middle top tooth structure is inserted into the middle position of the silicon wafer, and the two edge rows of top tooth structures are inserted into the left and right edge positions of the silicon wafer, respectively. Each row of top tooth structures is provided with a plurality of top tooth bodies arranged in sequence from front to back, and the height of the top tooth body of the middle top tooth structure is greater than the height of the top tooth body of the two edge rows of top tooth structures. The upper end of the top tooth body is provided with an opening for inserting and installing the silicon wafer, and the size of the opening of the top tooth body of the middle top tooth structure is greater than the size of the opening of the top tooth body of the two edge rows of top tooth structures.

2. A quick plug top tooth mechanism according to claim 1, wherein The number of the middle top tooth structures is at least two rows; the height of the top tooth body of the two middle rows of top tooth structures is 3-4 cm greater than the height of the top tooth body of the two edge rows of top tooth structures.

3. A quick plug top tooth mechanism according to claim 2, wherein, The size of the opening of the top tooth body of the two middle rows of top tooth structures is in the range of 0.8-1 mm.

4. A quick plug top tooth mechanism according to claim 1, wherein The size of the opening of the top tooth body of the two edge rows of top tooth structures is in the range of 0.6-0.8 mm.

5. A quick plug top tooth mechanism according to claim 1, wherein The thickness of the silicon wafer is 110-150 nm, and two silicon wafers are inserted into the opening of one top tooth body.

6. A quick plug top tooth mechanism according to claim 1, wherein The base for installing the top tooth structure is also provided.

7. A quick plug top tooth mechanism according to claim 6, wherein The base is provided with at least four mounting plates extending upward to install the four rows of top tooth structures, respectively. The mounting plate is provided with a mounting space for inserting and installing the lower end of the top tooth structure, and the side surface of the mounting plate is also provided with a pressing baffle for blocking the mounting space and a fastener for fastening the top tooth structure; one end of the fastener penetrates the pressing baffle into the mounting space and abuts against the top tooth structure to fasten and install the top tooth structure in the mounting space.

8. A quick plug top tooth mechanism according to claim 7, wherein The fastener is a threaded fastener.

9. A quick plug top tooth mechanism according to claim 1, wherein The top tooth structure is made of ceramic material.

10. A quartz boat comprising a boat body; characterized by, The boat body is provided with the fast-inserting top tooth mechanism according to any one of claims 1-9. The boat body is provided with the fast-inserting top tooth mechanism according to any one of claims 1-9.

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