Solar cell grid line printing auxiliary tool and solar cell production equipment

Abstract

The utility model relates to the technical field of solar cells, in particular to a solar cell grid line printing auxiliary tool and solar cell production equipment. The utility model provides a solar cell grid line printing auxiliary tool which is arranged on a solar cell conveying line. The solar cell grid line printing auxiliary tool comprises a driving part, a suction cup and a support. The driving piece and the sucking disc are arranged above the solar cell conveying line through the bracket; the suction cup is used for adsorbing solar cells conveyed by the solar cell conveying line, and the driving part is in transmission connection with the suction cup and drives the suction cup to rotate. The driving piece and the suction cup are matched to drive the solar cell to rotate, the direction of the grid line can be adjusted to be parallel to the printing direction, and compared with the prior art, the main grid printing height-width ratio is optimized, the silver paste consumption is reduced, and the shading rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, in particular to a solar cell grid line printing auxiliary tooling and a solar cell production device. Background Art

[0002] TOPCon cells, whose full name is Tunnel Oxide Passivated Contact, are an advanced solar cell technology with high photoelectric conversion efficiency. Currently, the printing method of the upper grid lines on TOPCon cells is that the printing direction of the grid lines is perpendicular to the direction of the grid lines themselves. Therefore, a relatively wide grid line width is required to ensure printability (generally, the main grid width ≥ 50 μm). However, the above printing method results in a poor aspect ratio of the main grid printing, a high consumption of main grid silver paste, and a large shading rate at the same time.

[0003] In view of this, the utility model provides a solar cell grid line printing auxiliary tooling, which is used to rotate the direction of the cell during the printing process, so that the printing direction of the grid lines is parallel to the direction of the grid lines themselves, optimize the aspect ratio of the main grid printing, reduce the silver paste consumption, and reduce the shading rate. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a solar cell grid line printing auxiliary tooling, which is used to rotate the direction of the cell during the printing process, so that the printing direction of the grid lines is parallel to the direction of the grid lines themselves, optimize the aspect ratio of the main grid printing, reduce the silver paste consumption, and reduce the shading rate. Another purpose of the utility model is to provide a solar cell production device, including the above-mentioned solar cell grid line printing auxiliary tooling.

[0005] To achieve the above purpose, an embodiment of one aspect of the utility model provides a solar cell grid line printing auxiliary tooling, which is arranged on a solar cell conveyor line; the solar cell grid line printing auxiliary tooling includes: a driving member, a suction cup, and a bracket;

[0006] The driving member and the suction cup are arranged above the solar cell conveyor line through the bracket;

[0007] The suction cup is used to adsorb the solar cells conveyed by the solar cell conveyor line, and the driving member is in transmission connection with the suction cup and drives the suction cup to rotate.

[0008] Furthermore, it further includes an induction component and a controller;

[0009] Both the induction component and the suction cup are electrically connected to the controller;

[0010] The induction component is used to monitor the conveying information of the solar cells on the solar cell conveying line, and the controller controls the operating state of the suction cup according to the induction information of the induction component.

[0011] Further, it further includes a connecting frame;

[0012] The connecting frame is connected to the bracket, and the induction component is arranged on the connecting frame.

[0013] Further, a cushion made of flexible material is provided at the lower end of the suction cup.

[0014] Further, the cushion is made of sponge.

[0015] Further, the distance between the lower end of the suction cup and the solar cell conveying line is less than or equal to 2 mm.

[0016] Further, the bracket includes a cross beam and columns located on both sides of the cross beam;

[0017] The two columns are respectively located on both sides of the solar cell conveying line, and the driving member and the suction cup are both arranged on the cross beam.

[0018] Further, the driving member and the suction cup are respectively located on both sides of the cross beam.

[0019] Further, the driving member is a motor.

[0020] Another embodiment of the present utility model further provides a solar cell production device, including the solar cell grid line printing auxiliary tooling described in any one of the above embodiments.

[0021] Advantages of the present utility model:

[0022] A solar cell grid line printing auxiliary tooling provided by the present utility model is arranged on a solar cell conveying line; the solar cell grid line printing auxiliary tooling includes: a driving member, a suction cup and a bracket; the driving member and the suction cup are arranged above the solar cell conveying line through the bracket; the suction cup is used to adsorb the solar cells conveyed by the solar cell conveying line, the driving member is in transmission connection with the suction cup, and drives the suction cup to rotate.

[0023] By driving the suction cup to rotate in cooperation with the driving member, the direction of the grid lines can be adjusted to be parallel to the printing direction. Compared with the prior art, the aspect ratio of the main grid printing is optimized, the amount of silver paste used is reduced, and the light shielding rate is reduced. At the same time, the solar cell grid line printing auxiliary tooling is arranged at the solar cell conveying line, and can be combined with the existing solar cell production line to improve production efficiency. Description of the Drawings

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a solar cell grid line printing auxiliary tooling provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of a solar cell grid line printing process provided in an embodiment of the utility model.

[0027] Icon: 1-solar cell; 11-main grid line; 12-sub-grid line;

[0028] 21-driving member; 22-suction cup; 23-bracket; 231-crossbeam; 232-column; 24-sensing component; 25-connecting frame. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1 As shown, one embodiment of the utility model provides a solar cell grid line printing auxiliary tooling, which is arranged on the solar cell conveyor line; the solar cell grid line printing auxiliary tooling includes: a driving member 21, a suction cup 22 and a bracket 23; the driving member 21 and the suction cup 22 are arranged above the solar cell 1 conveyor line through the bracket 23; the suction cup 22 is used to absorb the solar cell 1 conveyed by the solar cell conveyor line, and the driving member 21 is transmission-connected to the suction cup 22 and drives the suction cup 22 to rotate.

[0031] The solar cell grid line printing auxiliary tooling provided in this embodiment is used to rotate the direction of the solar cell 1 when printing the grid line on the solar cell 1, so that when printing the grid line on the solar cell 1, the direction of the grid line can be parallel to the printing direction. The solar cell grid line printing auxiliary tooling is arranged at the solar cell conveyor line. When the solar cell conveyor line conveys the solar cell 1 to the solar cell grid line printing auxiliary tooling, the solar cell grid line printing auxiliary tooling cooperates with the printing equipment to print the grid line on the solar cell 1.

[0032] Specifically, in the present embodiment, the above-mentioned solar cell grid line printing auxiliary tooling includes a driving member 21, a suction cup 22 and a bracket 23. The driving member 21 and the suction cup 22 are both arranged on the frame, and the driving member 21 and the suction cup 22 are both located above the solar cell conveyor line. The suction cup 22 is used to adsorb the solar cell 1, and the driving member 21 is transmission-connected to the suction cup 22, and is used to drive the suction cup 22 and the solar cell 1 located on the suction cup 22 to rotate. When in use, after the solar cell conveyor line transports the solar cell 1 to the bottom of the suction cup 22, the suction cup 22 runs and forms a negative pressure area under the suction cup 22, thereby adsorbing the solar cell 1. Afterwards, the driving member 21 drives the suction cup 22 to rotate, thereby driving the solar cell 1 located on the suction cup 22 to rotate, thereby adjusting the direction of the grid line to be parallel to the printing direction.

[0033] The solar cell grid line printing auxiliary tooling provided in this embodiment drives the solar cell 1 to rotate through the cooperation of the driving member 21 and the suction cup 22, and can adjust the direction of the grid line to be parallel to the printing direction. Compared with the existing technology, it optimizes the main grid printing aspect ratio, reduces the amount of silver paste, and reduces the shading rate. At the same time, the solar cell grid line printing auxiliary tooling is arranged at the solar cell conveyor line, and can be combined with the existing solar cell 1 production line to improve production efficiency.

[0034] The solar cell grid line printing auxiliary tooling provided by the embodiment of the utility model is as follows Figure 1 As shown, it also includes a sensing component 24 and a controller; the sensing component 24 and the suction cup 22 are both electrically connected to the controller; the sensing component 24 is used to monitor the conveying information of the solar cell 1 on the solar cell conveyor line, and the controller controls the operating state of the suction cup 22 according to the sensing information of the sensing component 24.

[0035] In this embodiment, the solar cell 1 grid line printing auxiliary tooling also includes a sensing component 24 and a controller. Among them, the sensing component 24 is used to sense whether a solar cell 1 is conveyed to the bottom of the suction cup 22 on the conveyor line. The controller is electrically connected to the suction cup 22 and the sensing component 24. When the sensing component 24 senses that there is a solar cell 1 under the suction cup 22, the controller controls the suction cup 22 to operate and adsorb the solar cell 1 under the suction cup 22. By setting the sensing component 24 to cooperate with the controller, the degree of intelligence is improved, and costs are reduced and efficiency is increased.

[0036] Optionally, in this embodiment, the sensing component 24 is disposed in front of the suction cup 22 along the conveying direction of the solar cell conveying line.

[0037] Optionally, in this embodiment, the sensing component 24 may be a photoelectric sensor, an inductive proximity sensor, a fiber optic sensor, a visual sensor, or the like.

[0038] Optionally, in this embodiment, the controller may be a Central Processing Unit (CPU), a Network Processor (NP), etc.; it may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0039] The solar cell grid line printing auxiliary tooling provided by the embodiment of the present utility model, as Figure 1 shown, further includes a connecting frame 25; the connecting frame 25 is connected to the support 23, and the induction component 24 is arranged on the connecting frame 25.

[0040] The above-mentioned induction component 24 is connected to the support 23 through the connecting frame 25, so that there is no need to set other installation structures beside the solar cell 1 conveying line, thereby reducing costs and improving the integrity of the solar cell grid line printing auxiliary tooling. Optionally, in this embodiment, the connecting frame 25 is an L-shaped plate, which has a simple structure and high strength.

[0041] For the solar cell grid line printing auxiliary tooling provided by the embodiment of the present utility model, a cushion made of a flexible material is provided at the lower end of the suction cup 22.

[0042] In this embodiment, at the lower end of the suction cup 22, that is, on the side of the suction cup 22 facing the solar cell 1, a cushion made of a flexible material is provided, so as to play a certain protective role on the surface of the solar cell 1 when the suction cup 22 adsorbs the solar cell 1, and prevent the surface of the solar cell 1 from being scratched by the suction cup 22.

[0043] For the solar cell grid line printing auxiliary tooling provided by the embodiment of the present utility model, the cushion is a sponge, which has a simple structure and low cost.

[0044] For the solar cell grid line printing auxiliary tooling provided by the embodiment of the present utility model, the distance between the lower end of the suction cup 22 and the solar cell conveying line is less than or equal to 2 mm.

[0045] As mentioned above, when the solar cell 1 is conveyed to the lower part of the suction cup 22 by the solar cell conveying line, the suction cup 22 can suck up the solar cell 1. In order for the suction cup 22 to suck up the solar cell 1, preferably, in this embodiment, the distance between the lower end of the suction cup 22 and the solar cell conveying line is less than or equal to 2 mm.

[0046] The auxiliary tooling for solar cell grid line printing provided by the embodiment of the present utility model is as Figure 1 shown. The bracket 23 includes a cross beam 231 and columns 232 located on both sides of the cross beam 231; the two columns 232 are respectively located on both sides of the solar cell conveying line, and the driving member 21 and the suction cup 22 are both arranged on the cross beam 231.

[0047] In this embodiment, the above-mentioned bracket 23 includes a cross beam 231 and columns 232 located on both sides of the cross beam 231. The connecting frame 25 for installing the induction component 24 is connected to the cross beam 231. The columns 232 are arranged on both sides of the solar cell conveying line, so that the cross beam 231 can be erected above the conveying line. By arranging the columns 232 on both sides of the cross beam 231 to support the cross beam 231, the stability is stronger.

[0048] The auxiliary tooling for solar cell grid line printing provided by the embodiment of the present utility model is as Figure 1 shown. The driving member 21 and the suction cup 22 are respectively located on both sides of the cross beam 231.

[0049] Preferably, in this embodiment, the driving member 21 and the suction cup 22 are respectively located on both sides of the cross beam 231, so as to improve the installation stability of the driving member 21 and the suction cup 22, and avoid the increase in the defective rate caused by the shaking of the solar cell 1 during the printing process. A through hole is provided on the cross beam 231, and the output end of the driving member 21 passes through the through hole and is connected to the suction cup 22 to drive the suction cup 22 to rotate.

[0050] The auxiliary tooling for solar cell grid line printing provided by the embodiment of the present utility model is as Figure 1 shown. The driving member 21 is a motor, which has a simple structure and is convenient to control.

[0051] It can be understood that, in this embodiment, the driving member 21 can also be a hand wheel, and the hand wheel can be provided with a limiting mechanism to limit the rotation angle of the suction cup 22, or the driving member 21 can also be a hydraulic motor, or a telescopic cylinder, etc.

[0052] The grid lines of the solar cell 1 are divided into main grid lines 11 and sub-grid lines 12, and the main grid lines 11 and the sub-grid lines 12 are perpendicular; when printing grid lines on the surface of the solar cell 1, first print the main grid lines 11 and the sub-grid lines 12 on one side of the solar cell 1, and then turn it over to print the main grid lines 11 and the sub-grid lines 12 on the other side. Specifically, taking the printing of the main grid on the back of the solar cell 1 as an example, as Figure 2 shown, Figure 2The hollow arrow in the upper middle is the printing direction. During printing, first place the solar cell 1 on the solar cell conveyor line and ensure that the direction of the main grid line 11 is parallel to the printing direction. After the main grid line 11 on the back of the solar cell 1 is printed and dried, the solar cell conveyor line transports the solar cell 1 to the lower part of the solar cell grid line printing auxiliary tooling. After the sensing component 24 senses the solar cell 1, the controller controls the suction cup 22 to pick up the solar cell 1, and the driving member 21 drives the suction cup 22 to rotate, so that the solar cell 1 on the suction cup 22 rotates 90°, thereby ensuring that the direction of the secondary grid line 12 on the back of the solar cell 1 is parallel to the printing direction. After the secondary grid line 12 on the back of the solar cell 1 is printed and dried, turn the solar cell 1 over and print the main grid line 11 and the secondary grid line 12 on the front of the solar cell 1. Before printing the main grid line 11 on the front of the solar cell 1, the solar cell conveyor line first transports the solar cell 1 to the lower part of the solar cell grid line printing auxiliary tooling and drives the solar cell 1 to rotate 90° through the solar cell grid line printing auxiliary tooling, thereby ensuring that the direction of the main grid line 11 on the front of the solar cell 1 is parallel to the printing direction. After the main grid line 11 on the front of the solar cell 1 is printed and dried, the solar cell conveyor line first transports the solar cell 1 to the lower part of the solar cell grid line printing auxiliary tooling and drives the solar cell 1 to rotate 90° through the solar cell grid line printing auxiliary tooling, thereby ensuring that the direction of the secondary grid line 12 on the front of the solar cell 1 is parallel to the printing direction, and then the secondary grid line 12 on the front of the solar cell 1 can be printed. Another embodiment of the present invention also provides a solar cell production device, including the solar cell grid line printing auxiliary tooling described in any of the above embodiments.

[0053] The solar cell produced by the solar cell production device provided in this embodiment through the solar cell grid line printing auxiliary tooling in any of the above embodiments has a lower main grid silver paste consumption, reducing production costs. At the same time, due to the reduced light shielding rate of the grid lines, the photoelectric conversion efficiency of the solar cell 1 can be improved.

[0054] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be a connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0056] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A printing auxiliary tooling for solar cell grid lines, which is arranged on a solar cell conveying line; characterized in that, The solar cell grid line printing auxiliary tooling comprises: a driving member (21), a suction cup (22) and a bracket (23); The driving member (21) and the suction cup (22) are arranged above the solar cell conveying line via the bracket (23); The suction cup (22) is used to absorb the solar cell (1) transported by the solar cell transport line, and the driving member (21) is transmission-connected to the suction cup (22) and drives the suction cup (22) to rotate.

2. The solar cell grid line printing auxiliary tooling according to claim 1, characterized in that, Also includes a sensing component (24) and a controller; The sensing component (24) and the suction cup (22) are both electrically connected to the controller; The sensing component (24) is used to monitor the conveying information of the solar cell (1) on the solar cell conveying line, and the controller controls the operating state of the suction cup (22) according to the sensing information of the sensing component (24).

3. The solar cell grid line printing auxiliary tooling according to claim 2, wherein, Also includes a connecting frame (25); The connecting frame (25) is connected to the bracket (23), and the sensing component (24) is arranged on the connecting frame (25).

4. The auxiliary tooling for solar cell grid line printing according to claim 1, wherein, A protective pad made of flexible material is provided at the lower end of the suction cup (22).

5. The auxiliary tooling for printing the grid lines of a solar cell according to claim 4, wherein The protective pad is a sponge.

6. The auxiliary tooling for solar cell grid line printing according to any one of claims 1 to 5, characterized in that The distance between the lower end of the suction cup (22) and the solar cell conveying line is less than or equal to 2 mm.

7. The auxiliary tooling for solar cell grid line printing according to any one of claims 1 to 5, characterized in that, The support (23) comprises a crossbeam (231) and columns (232) located on both sides of the crossbeam (231); The two upright posts (232) are respectively located on both sides of the solar cell conveying line, and the driving member (21) and the suction cup (22) are both arranged on the crossbeam (231).

8. The auxiliary tooling for printing the grid lines of a solar cell according to claim 7, wherein, The driving member (21) and the suction cup (22) are respectively located on two sides of the crossbeam (231).

9. The auxiliary tooling for solar cell grid line printing according to any one of claims 1 to 5, characterized in that The driving member (21) is a motor.

10. A solar cell production device, characterized in that, It comprises the solar cell grid line printing auxiliary tooling as described in any one of claims 1 to 9.

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