Silicon-based half battery piece passivation device

Abstract

The utility model discloses a passivation device for a silicon-based half battery piece. The passivation device comprises a substrate, a conveying table, a passivation solution storage box, a deflection brush and a linkage piece, the conveying table is arranged on the substrate, and a conveying belt is embedded in the upper surface of the conveying table and used for conveying half battery pieces. The passivation solution storage box is arranged on the base plate and located on one side of the conveying table. The deflection brush is rotationally connected with the conveying table through a rotating shaft, and one end of the rotating shaft extends into the conveying belt; the linkage piece is arranged between the rotating shaft and the conveying belt, and when the conveying belt runs, the rotating shaft can drive the deflection brush to intermittently deflect to the position above the conveying table; and when the rotating shaft is not subjected to the acting force of the linkage piece, the rotating shaft resets, so that the deflection brush deflects into the passivation solution storage box. By means of the device, in the process that the conveying belt conveys the half battery piece, the tangent plane of the half battery piece can be automatically passivated, the passivation rate is effectively improved, the production rate is correspondingly improved, and the working intensity of workers can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of half-cell battery processing, in particular to a silicon-based half-cell battery passivation device. Background Art

[0002] When making silicon-based half-cells, a laser scriber is usually used to cut the complete cell in half and then split it. During the laser cutting and splitting process, some damage is caused to the cell. The newly generated cut surface of the cell is directly exposed. After being packaged into a module and exposed to sunlight, the carriers generated inside the cell are likely to form a short circuit along the newly generated surface, reducing the output power of the module, and even causing damage and scrapping of the module in severe cases. In order to improve the reliability of half-cell photovoltaic modules and achieve long-term stable power output, it is crucial to passivate the newly generated surface of the half-cell.

[0003] At present, the passivation of half-cell battery cells is carried out by manually placing the cut surface of the half-cell battery cell in a passivation solution for passivation or manually wiping the half-cell battery cell with a brush soaked in the passivation solution for passivation. However, the efficiency of the above two passivation methods is too low, and the manual labor intensity is high, which can hardly meet the production needs.

[0004] Therefore, a silicon-based half-cell passivation device is needed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a silicon-based half-cell cell passivation device, so as to conveniently and quickly perform passivation operations on the cut surface of a half-cell cell, thereby improving the production rate.

[0006] In order to solve the above technical problems, the utility model provides a silicon-based half-cell passivation device, including a substrate, a conveying platform, a passivation liquid storage box, a deflection brush and a linkage;

[0007] The conveying platform is arranged on the substrate, and a conveyor belt is embedded on the upper surface thereof for conveying half a cell sheet;

[0008] The passivation liquid storage box is arranged on the substrate and is located on one side of the conveying platform;

[0009] The deflection brush is rotatably connected to the conveyor platform via a rotating shaft, and one end of the rotating shaft extends to the interior of the conveyor belt;

[0010] The linkage member is arranged between the rotating shaft and the conveyor belt, and when the conveyor belt is running, the rotating shaft can drive the deflection brush to intermittently deflect to the top of the conveying platform;

[0011] When the rotating shaft is not acted upon by the linkage member, the rotating shaft is reset to make the deflection brush deflect into the passivation liquid storage box.

[0012] Furthermore, a torsion spring is sleeved on the outer wall of the rotating shaft.

[0013] Further, the linkage member includes a plurality of rack sets and a gear ring;

[0014] A plurality of rack sets are equidistantly arranged on the inner surface of the conveyor belt;

[0015] The gear ring is fixedly mounted on the outer wall of the rotating shaft and can be meshed with the rack assembly.

[0016] Furthermore, when the gear ring is meshed with the rack assembly, the rotating shaft is driven to rotate, so that the deflection brush is deflected to the top of the conveying platform.

[0017] Furthermore, when the gear ring is separated from the rack assembly, the rotating shaft is reset to pull the deflection brush to deflect into the passivation liquid storage box.

[0018] Further, the outer surface of the conveyor belt has a plurality of storage slots arranged at equal distances;

[0019] The storage slot is located between two adjacent rack groups and is used for inserting and placing half-cell battery sheets along a direction perpendicular to the conveying direction of the conveyor belt.

[0020] Furthermore, the depth of the storage groove is two-thirds to three-quarters of the length of the half-cell battery sheet, so that the cross-section of the half-cell battery sheet can extend to the outside of the conveying platform to contact and fit with the inner wall of the deflection brush.

[0021] Furthermore, a plurality of groups of pallet assemblies are provided on the upper surface of the conveyor belt;

[0022] The cardboard assembly is configured as a U-shaped plate, and the storage groove is formed between the U-shaped plate and the upper surface of the conveyor belt.

[0023] Furthermore, bristles are provided on the side of the deflection brush facing the conveying platform.

[0024] Compared with the prior art, the utility model has at least the following beneficial effects:

[0025] By arranging a conveyor platform with a conveyor belt, a passivation liquid storage box, a deflection brush and a linkage, when the conveyor belt is conveying half-cell batteries, the deflection brush can be intermittently deflected to the top of the conveyor platform under the action of the linkage, and when not affected by the linkage, the deflection brush can be reset to the passivation liquid storage box under the action of the rotating shaft, that is, the deflection brush can be reciprocated between the passivation liquid storage box and the top of the conveyor platform, thereby realizing the function of autonomously passivating the cross-section of the half-cell battery during the conveyor belt conveying the half-cell battery, effectively improving the passivation rate, thereby correspondingly improving the production rate, and can effectively reduce the workload of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the silicon-based half-cell passivation device of the utility model;

[0027] Figure 2 This is a cross-sectional view of the silicon-based half-cell passivation device of the utility model;

[0028] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 For this utility model Figure 2 Cross-sectional view at the middle BB.

[0030] Figure numbers: 1, substrate; 2, conveyor platform; 21, conveyor belt; 3, passivation liquid storage box; 4, deflection brush; 5, linkage; 51, rack group; 52, gear ring; 6, rotating shaft; 7, storage slot; 8, pallet assembly. DETAILED DESCRIPTION

[0031] The silicon-based half-cell cell passivation device of the present invention will be described in more detail below in conjunction with the schematic diagram, which shows the preferred embodiment of the present invention. It should be understood that those skilled in the art can modify the present invention described herein and still achieve the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the present invention.

[0032] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0033] like Figures 1 to 4 As shown, an embodiment of the utility model proposes a silicon-based half-cell passivation device, including a substrate 1, a conveying platform 2, a passivation liquid storage box 3, a deflection brush 4 and a linkage 5.

[0034] The conveying platform 2 is disposed on the substrate 1 , and a conveying belt 21 is embedded on the upper surface thereof for conveying half-cell batteries.

[0035] The passivation liquid storage box 3 is arranged on the substrate 1 and located on one side of the conveying platform 2, and is used to provide passivation liquid to the deflection brush 4, so as to facilitate the subsequent passivation operation on the cut surface of the half-cell.

[0036] The deflection brush 4 is rotatably connected to the conveying platform 2 via a rotating shaft 6 , and one end of the rotating shaft 6 extends to the inside of the conveying belt 21 .

[0037] The linkage member 5 is disposed between the rotating shaft 6 and the conveyor belt 21. When the conveyor belt 21 is running, the rotating shaft 6 can drive the deflection brush 4 to intermittently deflect to the top of the conveying platform 2. That is, in the process of the conveyor belt 21 driving the half-cell to be transported, the deflection brush 4 can apply the passivation liquid to the cut surface of the half-cell by means of deflection and swinging.

[0038] In addition, when the rotating shaft 6 is not acted upon by the linkage member 5, the rotating shaft 6 is reset to deflect the deflection brush 4 into the passivation liquid storage box 3. In the process of deflection to the passivation liquid storage box 3, the deflection brush 4 can also apply the passivation liquid to the cut surface of the half-cell battery cell for a second time, ensuring that the cut surface of the half-cell battery cell is completely covered by the passivation liquid.

[0039] The device is provided with a conveying platform 2 with a conveyor belt 21, a passivation liquid storage box 3, a deflection brush 4 and a linkage 5, so that when the conveyor belt 21 is conveying half-cell batteries, the deflection brush 4 can be intermittently deflected to the top of the conveying platform 2 under the action of the linkage 5, and when not affected by the linkage 5, the deflection brush 4 can be reset to the inside of the passivation liquid storage box 3 under the action of the rotating shaft 6, that is, the deflection brush 4 can be reciprocated between the passivation liquid storage box 3 and the top of the conveying platform 2, so that the conveyor belt 21 can autonomously passivate the cross section of the half-cell battery when conveying the half-cell battery, thereby effectively improving the passivation rate, thereby correspondingly improving the production rate, and effectively reducing the work intensity of the workers.

[0040] It should be pointed out that the outer wall of the rotating shaft 6 is provided with a torsion spring to ensure that when the rotating shaft 6 is not subjected to the force of the linkage part 5, it can pull the deflection brush 4 to reset, so that the surface of the deflection brush 4 is always immersed in the passivation liquid to prevent the deflection brush 4 from being exposed to the outside for a long time and the passivation liquid inside it volatilizing, thereby preventing the problem of being unable to passivate the half-cell battery.

[0041] In this embodiment, a specific linkage 5 is proposed to better control the deflection of the rotating shaft 6, so that the deflection brush 4 can be deflected to above the conveying platform 2, and in the process contact the cut surface of the half-cell to complete the initial passivation operation.

[0042] Specifically, the linkage member 5 includes a plurality of rack sets 51 and a gear ring 52 .

[0043] The plurality of rack sets 51 are equidistantly arranged on the inner surface of the conveyor belt 21, and the gear ring 52 is fixedly mounted on the outer wall of the rotating shaft 6 and can mesh with the rack set 51, so that when the conveyor belt 21 is conveying the half-cell battery, the meshing action of the rack set 51 and the gear ring 52 can realize the deflection of the deflection brush 4 and complete the initial passivation operation of the cross section of the half-cell battery.

[0044] It should be noted that when the gear ring 52 is meshed with the rack set 51, the rotating shaft 6 is driven to rotate, so that the deflection brush 4 is deflected to the top of the conveying platform 2. When the gear ring 52 is separated from the rack set 51, the rotating shaft 6 is reset to pull the deflection brush 4 to deflect into the passivation liquid storage box 3. In this process, the half-cell battery can be passivated for the second time to ensure that the cross section of the half-cell battery can be passivated. That is, the deflection brush 4 is reciprocated between the passivation liquid storage box 3 and the top of the conveying platform 2 to enhance the passivation effect on the cross section of the half-cell battery.

[0045] In other embodiments, the outer surface of the conveyor belt 21 has a plurality of storage slots 7 that are equidistantly arranged.

[0046] The storage slot 7 is located between two adjacent rack sets 51 and is used for inserting and placing half-cell batteries in a direction perpendicular to the conveying direction of the conveyor belt 21, so that the deflection brush 4 can deflect the half-cell batteries (such as Figure 1 The partial section (shown by the dashed line) Figure 1 Then, when the tooth ring 52 is separated from the rack assembly 51, the half-cell is continuously fed under the action of the conveyor belt 21, and the deflection brush 4 is deflected into the passivation liquid storage box 3 by the reset force. During the deflection process, the remaining part of the cut surface of the half-cell can be passivated, thereby ensuring that the cut surface of the half-cell can be fully passivated.

[0047] It should be particularly noted that in order to allow the cut surface of the half-cell to contact the deflection brush 4 , the size of the storage slot 7 is further limited.

[0048] Specifically, the depth of the storage groove 7 is two-thirds to three-quarters of the length of half a cell sheet, so that the cross section of the half cell sheet can extend to the outside of the conveying platform 2 to contact and fit with the inner wall of the deflection brush 4 .

[0049] A plurality of groups of cardboard assemblies 8 are disposed on the upper surface of the conveyor belt 21 . The cardboard assemblies 8 are configured as U-shaped plates. The storage groove 7 is formed between the U-shaped plates and the upper surface of the conveyor belt 21 .

[0050] In other embodiments, the deflection brush 4 is provided with bristles on the side facing the conveying platform 2 to better absorb the passivation liquid and better apply the passivation liquid on the cut surface of the half-cell.

[0051] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A silicon-based half-cell cell passivation device, characterized in that: It includes a substrate, a conveying table, a passivation liquid storage box, a deflection brush and a linkage; The conveying platform is arranged on the substrate, and a conveyor belt is embedded on the upper surface thereof for conveying half a cell sheet; The passivation liquid storage box is arranged on the substrate and is located on one side of the conveying platform; The deflection brush is rotatably connected to the conveyor platform via a rotating shaft, and one end of the rotating shaft extends to the interior of the conveyor belt; The linkage member is arranged between the rotating shaft and the conveyor belt, and when the conveyor belt is running, the rotating shaft can drive the deflection brush to intermittently deflect to the top of the conveying platform; When the rotating shaft is not acted upon by the linkage member, the rotating shaft is reset to make the deflection brush deflect into the passivation liquid storage box.

2. The silicon-based half-cell cell passivation device according to claim 1, characterized in that: The outer wall of the rotating shaft is sleeved with a torsion spring.

3. The silicon-based half-cell passivation device according to claim 1, characterized in that: The linkage comprises a plurality of rack sets and a gear ring; A plurality of rack sets are equidistantly arranged on the inner surface of the conveyor belt; The gear ring is fixedly mounted on the outer wall of the rotating shaft and can mesh with the rack assembly.

4. The silicon-based half-cell cell passivation device according to claim 3, characterized in that: When the gear ring is meshed with the rack assembly, the rotating shaft is driven to rotate, so that the deflection brush is deflected to the top of the conveying platform.

5. The silicon-based half-cell passivation device according to claim 3, characterized in that: When the gear ring is separated from the rack assembly, the rotating shaft is reset to pull the deflection brush to deflect into the passivation liquid storage box.

6. The silicon-based half-cell passivation device according to claim 3, characterized in that: The outer surface of the conveyor belt has a plurality of storage slots arranged at equal distances; The storage slot is located between two adjacent rack groups and is used for inserting and placing half-cell battery sheets along a direction perpendicular to the conveying direction of the conveyor belt.

7. The silicon-based half-cell cell passivation device according to claim 6, characterized in that: The depth of the storage groove is two-thirds to three-quarters of the length of the half-cell battery sheet, so that the cut surface of the half-cell battery sheet can extend to the outside of the conveying platform to contact and fit with the inner wall of the deflection brush.

8. The silicon-based half-cell passivation device according to claim 6, characterized in that: The upper surface of the conveyor belt is provided with a plurality of groups of card board assemblies; The cardboard assembly is configured as a U-shaped plate, and the storage groove is formed between the U-shaped plate and the upper surface of the conveyor belt.

9. The silicon-based half-cell passivation device according to claim 1, characterized in that: The deflection brush is provided with bristles on a side facing the conveying platform.

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