Battery piece conveying belt

Abstract

The utility model relates to the field of photovoltaic equipment manufacturing, in particular to a battery piece conveying belt. Wherein the adsorption holes comprise a single group of adsorption holes and a plurality of groups of adsorption holes, the plurality of groups of adsorption holes are at least arranged on two sides of an adsorbed area of a battery piece along the direction of the welding strip, and at least two adsorption holes of the plurality of groups of adsorption holes are obliquely arranged. The single group of adsorption holes and the multiple groups of adsorption holes are formed in the battery piece conveying belt, so that the battery pieces can be stably adsorbed, and the multiple groups of adsorption holes are formed in the adsorbed area of the battery pieces on the battery piece conveying belt in the welding strip direction, so that the phenomena of welding strip sealing-off and white leakage caused by warping of the two sides when the battery pieces are adsorbed can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic equipment manufacturing, specifically to a solar cell conveyor belt. Background Technology

[0002] With the rapid development of the photovoltaic solar energy industry, OBB (Obstacle-Free) solar cell technology has emerged to save on production costs and improve power generation efficiency. Because the cells in this technology are lighter than traditional cells and lack a grid on their surface, connecting them in series requires a special process to connect a lighter-weight solder ribbon to the fine grid lines on the cells. This places high demands on the contact welding precision between the solder ribbon and the grid lines. However, traditional cell conveyor belts, such as the one described in Chinese Utility Model Patent Publication No. CN218433177U (titled "Adsorption-Stable Vacuum Adsorption Conveyor Line for Cells"), while capable of adsorbing and fixing OBB cells to ensure placement accuracy and prevent displacement, falling, or stacking, suffer from various issues. These include solder ribbon warping, uneven thickness, and uneven adsorption force. These factors cause the solder ribbon on the conveyor belt to shift and deviate from the grid lines relative to the cells at the adsorption holes, leading to cell string detachment, white gaps, and ultimately, degradation of the solar module. Utility Model Content

[0003] To address the problems in the existing technology, the purpose of this utility model is to provide a battery cell conveyor belt that can stably adsorb OBB battery cells while conveying them, without affecting the fine solder strips in contact with the fine grid lines of the OBB battery cells, thereby reducing the risk of battery module degradation.

[0004] The battery cell conveyor belt includes a single set of adsorption holes and multiple sets of adsorption holes. The multiple sets of adsorption holes are at least located on both sides of the adsorption area of ​​the battery cell along the direction of the welding strip, and at least two of the multiple sets of adsorption holes are obliquely arranged.

[0005] The single and multiple sets of adsorption holes on the battery cell conveyor belt can stably adsorb the battery cells. The multiple sets of adsorption holes on the battery cell conveyor belt along the direction of the welding strip in the area where the battery cell is adsorbed can prevent the battery cell from warping on both sides, which would cause the welding strip to detach and the white part to be exposed.

[0006] Specifically, the multiple sets of adsorption holes on the battery cell conveyor belt can be arranged in various combinations, all of which can achieve stable adsorption of OBB battery cells.

[0007] Optionally, multiple sets of adsorption holes can be configured as two adsorption holes, with the two adsorption holes at an angle of 10°-30° to the perpendicular direction of the battery cell conveyor belt, and the spacing between the adsorption holes is 4-4.6mm.

[0008] Optionally, the multiple sets of adsorption holes are configured with three adsorption holes, the three adsorption holes are inclined at an angle of 37°-70° to the direction perpendicular to the conveying direction of the battery cell conveyor belt, and the spacing between the adsorption holes is 2.5-7.8mm.

[0009] Optionally, the multiple adsorption holes are configured as four adsorption holes, with the four adsorption holes at an angle of 37°-70° to the perpendicular direction of the battery cell conveyor belt, and the spacing between the adsorption holes is 2.5-6.8mm.

[0010] Optionally, the battery cell conveyor belt includes a single set of adsorption holes and adsorption waist holes, with the adsorption waist holes being provided on at least two sides of the area where the battery cell is adsorbed along the direction of the welding strip, and the adsorption waist holes being obliquely arranged. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the battery cell conveyor belt structure of this utility model;

[0012] Figure 2 This is a partial schematic diagram of the battery cell conveyor belt section of this utility model, which has two sets of adsorption holes.

[0013] Figure 3 This is a partial schematic diagram of the battery cell conveyor belt section of this utility model, which has three sets of adsorption holes.

[0014] Figure 4 This is a partial schematic diagram of the battery cell conveyor belt section of this utility model, which has four sets of adsorption holes.

[0015] Figure 5 This is a partial schematic diagram of the adsorption waist hole of the battery cell conveyor belt of this utility model.

[0016] Reference numerals: 10. Battery cell conveyor belt; 11. Multiple sets of adsorption holes; 12. Single set of adsorption holes; 13. Adsorption waist hole. Detailed Implementation

[0017] The purpose of this invention is to provide a battery cell conveyor belt 10 that can stably adsorb OBB battery cells while conveying them, without affecting the fine solder strips that are in contact with the fine grid lines of the OBB battery cells, thereby reducing the risk of battery module degradation.

[0018] Generally, the materials conveyed on the cell conveyor belt 10 include OBB cells and fine welding ribbons. They are placed on the cell conveyor belt in a specific arrangement. Adjacent OBB cells are connected by the same set of fine welding ribbons. One end of the set of fine welding ribbons contacts the fine grid lines on the front of the first OBB cell, and the other end contacts the fine grid lines on the back of the second OBB cell. The number of fine welding ribbons in each set corresponds to the number of fine grid lines on the OBB cell. In this case, there are 20 fine grid lines on the OBB cell, so there are also 20 fine welding ribbons in contact with it.

[0019] Figure 1 This is a schematic diagram of a battery cell conveyor belt structure provided in one embodiment of the present invention. In this embodiment, in order to stably transport OB battery cells and fine solder ribbons, the battery cell conveyor belt 10 is provided with a single set of adsorption holes 12 and multiple sets of adsorption holes 11. A negative pressure source (not shown in the figure) is also provided below the battery cell conveyor belt 10. The negative pressure source is connected to each set of adsorption holes. Through the setting of each set of adsorption holes, the OB battery cells and fine solder ribbons can be stably adsorbed on the battery cell conveyor belt for transport. In order to prevent the adsorption holes from affecting the fine solder ribbons, the fine solder ribbons in contact with the fine grid lines of the OB battery cells are located between the single set of adsorption holes 12 and the multiple sets of adsorption holes 11. In order to prevent the OB battery cells from warping on both sides during the adsorption process, multiple sets of adsorption holes 11 are set on both sides of the adsorption area of ​​the OB battery cells along the direction of the fine solder ribbon on the battery cell conveyor belt 10.

[0020] Considering the influence of the various sets of adsorption holes on the adsorption force of OB battery cells on the battery cell conveyor belt, if the diameter of the adsorption holes is too small, it will directly affect the adsorption effect on the OB battery cells. In actual use, if the diameter of the adsorption holes on the battery cell conveyor belt is less than 2mm, the adsorption force on the OB battery cells will be reduced, and the OB battery cells cannot be transported stably. If the diameter of the adsorption holes is greater than 2mm, it will be difficult for the adsorption holes to be arranged in the adsorption area. Therefore, in this embodiment, the diameter of the adsorption holes is set to 2mm, which can ensure a stable adsorption effect on the OB battery cells and also allow the adsorption holes to be arranged in a specific order in the adsorption area of ​​the OB battery cells.

[0021] In this utility model example, the multiple sets of adsorption holes 11 provided on the battery cell conveyor belt 10 can be arranged in various combinations, all of which can achieve stable adsorption of OBB battery cells. The following are several examples to explain this.

[0022] like Figure 2As shown, in the first example, multiple sets of adsorption holes 11 are provided in twos and are inclined at an angle of 10°-30° to the direction perpendicular to the conveying direction of the battery cell conveyor belt 10. The distance between adsorption holes is 4-4.6mm. Specifically, in actual use, this embodiment adopts an angle of 15° and a distance of 4.141mm between adsorption holes.

[0023] like Figure 3 As shown, in the second example, there are three sets of adsorption holes 11, and the angle between them and the vertical direction of the conveying direction of the battery cell conveyor belt 10 is 37°-70°. The distance between the adsorption holes is 2.5-7.8mm. Specifically, in actual use, this embodiment adopts an angle of 45° and a distance between the adsorption holes of 2.828mm.

[0024] like Figure 4 As shown, in the third example, there are four sets of adsorption holes 11, and the angle between them and the vertical direction of the conveying direction of the battery cell conveyor belt 10 is 57°-79°. The distance between the adsorption holes is 2.5-6.8mm. Specifically, in actual use, this embodiment adopts an angle of 65° and a distance between the adsorption holes of 3.155mm.

[0025] like Figure 5 As shown, in another possible implementation of this utility model, the battery cell conveyor belt 10 is provided with a single set of adsorption holes 12 and adsorption waist holes 13. The adsorption waist holes 13 are provided on at least two sides of the area where the battery cell is adsorbed along the direction of the welding strip, and the adsorption waist holes 13 are obliquely arranged.

[0026] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not covered by the invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0027] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A battery cell conveyor belt, characterized in that, It includes a single set of adsorption holes and multiple sets of adsorption holes. The multiple sets of adsorption holes are at least located on both sides of the adsorption area of ​​the battery cell along the direction of the welding strip. At least two of the multiple sets of adsorption holes are obliquely arranged. The fine welding strip is located between the single set of adsorption holes and the multiple sets of adsorption holes.

2. The battery cell conveyor belt according to claim 1, characterized in that, The multiple sets of adsorption pores are configured as two adsorption pores.

3. The battery cell conveyor belt according to claim 2, characterized in that, The multiple sets of adsorption holes are inclined at an angle of 10°-30° to the direction perpendicular to the conveying direction of the battery cell conveyor belt.

4. The battery cell conveyor belt according to claim 3, characterized in that, The oblique spacing between two adsorption pores in the multiple sets of adsorption pores is 4-4.6 mm.

5. The battery cell conveyor belt according to claim 1, characterized in that, The multiple sets of adsorption pores are configured as three adsorption pores.

6. The battery cell conveyor belt according to claim 5, characterized in that, The multiple sets of adsorption holes are inclined at an angle of 37°-70° to the direction perpendicular to the conveying direction of the battery cell conveyor belt.

7. The battery cell conveyor belt according to claim 6, characterized in that, The oblique spacing between the three adsorption pores in the multiple sets of adsorption pores is 2.5-7.8 mm.

8. The battery cell conveyor belt according to claim 1, characterized in that, The multiple sets of adsorption pores are configured as four adsorption pores.

9. The battery cell conveyor belt according to claim 8, characterized in that, The multiple sets of adsorption holes are inclined at an angle of 57°-79° to the direction perpendicular to the conveying direction of the battery cell conveyor belt.

10. The battery cell conveyor belt according to claim 9, characterized in that, The oblique spacing between the four adsorption pores in the multiple sets of adsorption pores is 2.5mm-6.8mm.

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