Packaging device capable of slowing down oxidation of crystalline silicon battery piece

Abstract

The utility model relates to the field of crystalline silicon battery piece packaging. A packaging device for slowing down oxidation of a crystalline silicon battery piece comprises a press-fitting table 1 capable of vertically moving up and down, a supporting table 2 and a packaging pad, the lower surface of the press-fitting table 1 corresponds to the upper surface of the supporting table 2, and a first rectangular frame protrusion 11 and a second rectangular frame protrusion 12 are arranged on the lower surface of the press-fitting table 1; the center point of the first rectangular frame protrusion 11 and the center point of the second rectangular frame protrusion 12 coincide, the first rectangular frame protrusion 11 is located in the second rectangular frame protrusion 12, and the thickness of the second rectangular frame protrusion 12 in the vertical direction is larger than that of the first rectangular frame protrusion 11. According to the packaging device, the crystalline silicon battery piece can be packaged, the packaging cleanliness is improved in the packaging process, contact between the battery piece and air is reduced, and therefore the probability that the battery piece is oxidized is reduced.

Description

Technical Field

[0001] The utility model relates to the field of crystalline silicon battery sheet packaging. Background Art

[0002] As a green energy, solar energy is gaining more and more attention due to its advantages such as being inexhaustible, pollution-free, and not restricted by geographical resources. Solar cells are devices that convert solar energy into electrical energy using the photoelectric effect of semiconductor materials. With the continuous development of crystalline silicon solar cells, end customers are also constantly increasing their requirements for battery quality, especially in terms of battery appearance.

[0003] In recent years, the oxidation of crystalline silicon cells has become a concern. In the actual production process of cells, sintered cells often oxidize during storage due to improper storage, resulting in poor appearance and further affecting the efficiency of the cells. Summary of the invention

[0004] The technical problem to be solved by the utility model is: how to provide a packaging device for slowing down the oxidation of crystalline silicon solar cells.

[0005] The technical solution adopted by the utility model is: a packaging device for slowing down the oxidation of crystalline silicon solar cells, comprising a press-fitting platform 1, a support platform 2, and a packaging pad that can be moved vertically up and down, the lower surface of the press-fitting platform 1 corresponds to the upper surface of the support platform 2, the lower surface of the press-fitting platform 1 has a first rectangular frame protrusion 11 and a second rectangular frame protrusion 12, the center points of the first rectangular frame protrusion 11 and the second rectangular frame protrusion 12 coincide with each other and the first rectangular frame protrusion 11 is inside the second rectangular frame protrusion 12, the second rectangular frame protrusion 12 is vertically thicker than the first rectangular frame protrusion 11, the upper surface of the support platform 2 There are a rectangular frame through groove 22 and a rectangular frame extrusion surface 23 on the surface, the rectangular frame through groove 22 corresponds vertically to the second rectangular frame protrusion 12, the rectangular frame extrusion surface 23 corresponds vertically to the first rectangular frame protrusion 11, the inside of the rectangular frame extrusion surface 23 is a storage area 21, and the packaging pad includes a first EVC film 7, a second EVC film 6, and an EVE cotton pad 5 which are arranged in sequence and have their edges glued together; during operation, a packaging pad, a crystalline silicon cell, and a packaging pad are placed on the support table 2 in sequence, and each layer of the packaging pad covers the rectangular frame through groove 22 area, and the crystalline silicon cell is in the storage area 21 area.

[0006] The packaging device also includes butter paper, which is located between the front side of the crystalline silicon cell and the packaging pad in contact with the front side of the crystalline silicon cell during operation.

[0007] The press-fitting table 1 is installed on the telescopic head of the hydraulic device 4 .

[0008] The packaging device further comprises an isolation gas nozzle 3 for spraying isolation gas, and the isolation gas nozzle 3 is located on the peripheral side of the support platform 2 .

[0009] The beneficial effects of the utility model are as follows: the packaging device of the utility model can complete the packaging of crystalline silicon battery cells, improve the packaging cleanliness during packaging, reduce the contact between the battery cells and the air, and thus reduce the probability of oxidation of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a schematic diagram of a top view of the support platform of the utility model;

[0012] Figure 3 It is a schematic diagram of the packaging pad of the utility model;

[0013] Figure 4 yes Figure 3 AA schematic diagram;

[0014] Figure 5 It is a schematic diagram of the lower surface of the first rectangular frame protrusion of the press-fitting table of the utility model;

[0015] Among them, 1. pressing table, 2. supporting table, 3. isolating air nozzle, 4. hydraulic device, 5. EVE cotton pad, 6. second EVC film, 7. first EVC film, 11. first rectangular frame protrusion, 12. second rectangular frame protrusion, 21. storage area, 22. rectangular frame through groove, 23. rectangular frame extrusion surface, 24. supporting legs. DETAILED DESCRIPTION

[0016] like Figure 1-4 As shown, the utility model is a packaging device for slowing down the oxidation of crystalline silicon solar cells, and its purpose is to solve the problem in the prior art that crystalline silicon solar cells are prone to oxidation after being packaged.

[0017] A packaging device for slowing down the oxidation of crystalline silicon solar cells comprises a press-fitting platform 1, a support platform 2, and a packaging pad that can move vertically up and down, wherein the lower surface of the press-fitting platform 1 corresponds to the upper surface of the support platform 2. The packaging pad is attached to the upper and lower surfaces of the crystalline silicon solar cell by the pressing of the press-fitting platform 1 and the support platform 2, and then the two layers of packaging pads are pressed together around the crystalline silicon solar cell to prevent the outside air from contacting the crystalline silicon solar cell and causing oxidation.

[0018] The press-fitting table 1 is a rectangular block, whose lower surface is a rectangle, and whose upper surface is fixed to the telescopic arm of the hydraulic cylinder. The base of the hydraulic cylinder is fixed to the center of the crossbeam of the portal frame just above the support platform 2. By controlling the hydraulic cylinder, the press-fitting table 1 can be moved up and down in the vertical direction. The lower surface of the press-fitting table 1 has a first rectangular frame protrusion 11 and a second rectangular frame protrusion 12. The center points of the first rectangular frame protrusion 11 and the second rectangular frame protrusion 12 coincide with each other, and the first rectangular frame protrusion 11 is inside the second rectangular frame protrusion 12. The vertical thickness of the second rectangular frame protrusion 12 is greater than that of the first rectangular frame protrusion 11. Among them, the first rectangular frame protrusion 11 plays a role in pressure sealing. Under high pressure, the two layers of packaging pads can be pressed together by pressure. In order to achieve a better seal, the inner side of the lower surface of the first rectangular frame protrusion 11 has a pattern. As Figure 5 As shown, the inclined lines are located at the inner center of the lower surface of the first rectangular frame protrusion 11, the width of the inclined lines is 1-1.5mm, the thickness of the inclined lines is 1-1.5mm, and the spacing between adjacent inclined lines is 5-6mm. The second rectangular frame protrusion 12 is used for cutting, and the excess packaging cushion is cut off.

[0019] The upper surface of the support platform 2 has a rectangular frame through groove 22 and a rectangular frame extrusion surface 23. The rectangular frame through groove 22 corresponds vertically to the second rectangular frame protrusion 12, and the rectangular frame extrusion surface 23 corresponds vertically to the first rectangular frame protrusion 11. The width of the second rectangular frame protrusion 12 is 2-3 mm smaller than the width of the rectangular frame through groove 22. When the rectangular frame extrusion surface 23 contacts the first rectangular frame protrusion 11, the depth of the second rectangular frame protrusion 12 inserted into the rectangular frame through groove 22 is 1-5 mm. The inner side of the upper surface of the rectangular frame extrusion surface 23 has a pattern. In one embodiment, the pattern on the upper surface of the rectangular frame extrusion surface 23 is similar to the pattern on the lower surface of the first rectangular frame protrusion 11 and is also an inclined line. The difference is that the inclined line on the lower surface of the first rectangular frame protrusion 11 vertically corresponds to the center of two adjacent inclined lines on the upper surface of the rectangular frame extrusion surface 23, and similarly, the inclined line on the upper surface of the rectangular frame extrusion surface 23 corresponds to the center of two adjacent inclined lines on the lower surface of the first rectangular frame protrusion 11. In this way, when the first rectangular frame protrusion 11 and the rectangular frame extrusion surface 23 are correspondingly extruded, the sealing extrusion of the packaging cushion can be completed.

[0020] The interior of the rectangular frame extrusion surface 23 is a storage area 21, and the packaging pad includes a first EVC film 7, a second EVC film 6, and an EVE cotton pad 5 which are arranged in sequence and have their edges glued together.

[0021] During operation, the support table 2 is sequentially placed with a packing pad, a crystalline silicon cell, and a packing pad. It should be noted that the two packing pads are facing each other, and the EVE cotton pads of the packing pads are in contact with the upper and lower surfaces of the crystalline silicon cell. Each layer of packing pads covers the rectangular frame through groove 22 area, and the crystalline silicon cell is in the storage area 21 area.

[0022] In one embodiment, the packaging device further comprises butter paper, and during operation, the butter paper is located between the front surface of the crystalline silicon cell and the packaging pad in contact with the front surface of the crystalline silicon cell.

[0023] In one embodiment, the packaging device further includes an isolation gas nozzle 3 for spraying isolation gas, and the isolation gas nozzle 3 is located on the peripheral side of the support platform 2. The isolation gas nozzle 3 is a gas nozzle, and the isolation gas nozzle 3 sprays nitrogen or argon to drive the air near the support platform 2, so that the packaged crystalline silicon cell is in contact with the least oxygen, further reducing the occurrence of oxidation.

[0024] For crystalline silicon cells of different sizes, the pressing table 1 and the supporting table 2 need to be replaced to meet the packaging size and ensure that the length and width of the storage area are 1-2 cm larger than the length and width of the crystalline silicon cell. In addition, the position corresponding to the storage area is a groove, and the depth of the groove is 1.5-2 times the thickness of the crystalline silicon cell.

Claims

1. A packaging device for slowing down the oxidation of crystalline silicon solar cells, characterized in that: The invention comprises a pressing platform (1) which can be moved vertically up and down, a supporting platform (2), and a packaging cushion, wherein the lower surface of the pressing platform (1) corresponds to the upper surface of the supporting platform (2), the lower surface of the pressing platform (1) has a first rectangular frame protrusion (11) and a second rectangular frame protrusion (12), the center points of the first rectangular frame protrusion (11) and the second rectangular frame protrusion (12) coincide with each other and the first rectangular frame protrusion (11) is located inside the second rectangular frame protrusion (12), the vertical thickness of the second rectangular frame protrusion (12) is greater than that of the first rectangular frame protrusion (11), and the upper surface of the supporting platform (2) has a rectangular frame through groove (22) and a rectangular frame protrusion (23). The rectangular frame through groove (22) and the second rectangular frame protrusion (12) are vertically corresponding, the rectangular frame extrusion surface (23) and the first rectangular frame protrusion (11) are vertically corresponding, the interior of the rectangular frame extrusion surface (23) is a storage area (21), and the packaging pad comprises a first EVC film (7), a second EVC film (6), and an EVE cotton pad (5) which are sequentially arranged and have their edges glued together; during operation, the packaging pad, the crystalline silicon cell sheet, and the packaging pad are sequentially placed on the support platform (2), and each layer of the packaging pad covers the rectangular frame through groove (22) area, and the crystalline silicon cell sheet is in the storage area (21).

2. A packaging device for slowing down oxidation of crystalline silicon solar cells according to claim 1, characterized in that: The packaging device also includes butter paper, which is located between the front side of the crystalline silicon cell and the packaging pad in contact with the front side of the crystalline silicon cell during operation.

3. A packaging device for slowing down oxidation of crystalline silicon solar cells according to claim 1, characterized in that: The press-fitting table (1) is mounted on the telescopic head of the hydraulic device (4).

4. The packaging device for slowing down oxidation of crystalline silicon solar cells according to claim 1, characterized in that: The packaging device further comprises an isolation gas nozzle (3) for spraying isolation gas, wherein the isolation gas nozzle (3) is located on the peripheral side of the support platform (2).

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