Battery piece conveying belt

Abstract

The invention 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] The invention relates to the field of photovoltaic equipment manufacturing, in particular to a battery sheet conveyor belt. Background Art

[0002] Under the trend of rapid development of the photovoltaic solar energy industry, in order to save the production cost of battery components and improve power generation efficiency, a 0BB busbarless battery technology has emerged. Since the battery cells in this technology are lighter than traditional battery cells and there is no busbar on the surface of the battery cells, in order to connect them in series, a thin welding strip with a weight that is lighter than conventional welding strips is required to be connected to the fine grid lines on the battery cells through a special process, which requires high contact welding accuracy between the thin welding strips and the fine grid lines of the battery cells. However, the traditional battery cell conveyor belt, such as the Chinese utility model patent announcement number: CN218433177U, is named a vacuum adsorption conveyor line body for battery cells with stable adsorption. Although it can adsorb and fix the battery cells of the 0BB busbarless technology, ensure the placement accuracy of the battery cells, and avoid displacement, falling or stacking, the welding strip will be warped, uneven in thickness and uneven in adsorption force, which will affect the thin welding strip on the conveyor belt to shake left and right relative to the battery cells at the adsorption hole position, offset the fine grid lines, resulting in desoldering and white leakage of the battery string, and then leading to the degradation of the battery components. Summary of the invention

[0003] In view of the problems in the prior art, the purpose of the present invention is to provide a battery cell conveyor belt that can stably adsorb 0BB battery cells while conveying them and will not affect the thin welding strips in contact with the thin grid lines of the 0BB battery cells, thereby reducing the risk of battery component degradation.

[0004] The battery cell conveyor belt comprises a single group of adsorption holes and multiple groups of adsorption holes, wherein the multiple groups of adsorption holes are at least arranged on both sides of the battery cell adsorption area along the welding belt direction, and at least two adsorption holes in the multiple groups of adsorption holes are arranged obliquely.

[0005] The battery cells can be stably adsorbed by a single group of adsorption holes and multiple groups of adsorption holes on the battery cell conveyor belt. The multiple groups of adsorption holes along the direction of the soldering tape in the battery cell adsorption area on the battery cell conveyor belt can prevent the soldering tape from desoldering and whitening due to warping on both sides of the battery cell when it is adsorbed.

[0006] Specifically, the multiple groups of adsorption holes provided on the battery cell conveyor belt can be arranged and combined in a variety of ways, all of which can achieve stable adsorption of 0BB battery cells.

[0007] Optionally, the multiple groups of adsorption holes are set to two adsorption holes, the two adsorption holes are inclined at an angle of 10°-30° to the vertical direction of the conveying direction of the battery cell conveyor belt, and the spacing between the adsorption holes is 4-4.6mm.

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

[0009] Optionally, the multiple groups of adsorption holes are set to four adsorption holes, the four adsorption holes are inclined at an angle of 37°-70° to the vertical direction of the conveying direction of the battery cell conveyor belt, and the spacing between the adsorption holes is 2.5-6.8 mm.

[0010] Optionally, the battery cell conveyor belt includes a single group of adsorption holes and adsorption waist holes, the adsorption waist holes are at least arranged on both sides of the battery cell adsorbed area along the direction of the welding belt, and the adsorption waist holes are arranged obliquely. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the partial structure of the battery sheet conveyor belt of the present invention; Figure 2 It is a partial schematic diagram of a battery cell conveyor belt of the present invention having two groups of adsorption holes; Figure 3 It is a partial schematic diagram of a battery sheet conveyor belt of the present invention having three groups of adsorption holes; Figure 4 It is a partial schematic diagram of a battery cell conveyor belt of the present invention having four groups of adsorption holes; Figure 5 It is a partial schematic diagram of the waist hole adsorption of the battery cell conveyor belt of the present invention.

[0012] Figure numbers: 10, battery cell conveyor belt; 11, multiple groups of adsorption holes; 12, single group of adsorption holes; 13, adsorption waist hole. DETAILED DESCRIPTION

[0013] The purpose of the present invention is to provide a cell conveyor belt 10, which can stably adsorb 0BB cells while conveying them and will not affect the thin welding strips in contact with the thin grid lines of the 0BB cells, thereby reducing the risk of battery component degradation.

[0014] Generally, the materials conveyed on the battery cell conveyor belt 10 include 0BB battery cells and thin welding ribbons, which are placed on the battery cell conveyor belt in a specific arrangement. Adjacent 0BB battery cells are connected by the same group of thin welding ribbons. One end of the same group of thin welding ribbons contacts the thin grid lines on the front side of the first 0BB battery cell, and the other end contacts the thin grid lines on the back side of the second 0BB battery cell. The number of thin welding ribbons in each group corresponds to the number of thin grid lines on the 0BB battery cell. In this case, there are 20 thin grid lines on the 0BB battery cell, so there are also 20 thin welding ribbons in contact with it.

[0015] Figure 1 : is a schematic diagram of the battery cell conveyor belt structure provided in an embodiment of the present invention. In this embodiment, in order to stably convey 0BB battery cells and thin welding strips, the battery cell conveyor belt 10 is provided with a single group of adsorption holes 12 and multiple groups of adsorption holes 11, and a negative pressure source (not shown in the figure) is further provided below the battery cell conveyor belt 10. The negative pressure source is connected with each group of adsorption holes. Through the setting of each group of adsorption holes, the 0BB battery cells and the thin welding strips can be stably adsorbed on the battery cell conveyor belt for transportation; in order to prevent each group of adsorption holes from affecting the thin welding strips, the thin welding strips in contact with the thin grid lines of the 0BB battery cells are located between the single group of adsorption holes 12 and the multiple groups of adsorption holes 11; in order to prevent the 0BB battery cells from warping on both sides during the adsorption process, multiple groups of adsorption holes 11 are provided on the battery cell conveyor belt 10 on both sides of the 0BB battery cell adsorbed area along the direction of the thin welding strips.

[0016] Taking into account the influence of each group of adsorption holes opened on the battery cell conveyor belt on the adsorption force of 0BB battery cell, a too small adsorption hole diameter will directly affect the adsorption effect on the 0BB battery cell. In actual use, if the diameter of the adsorption holes opened on the battery cell conveyor belt is less than 2mm, the adsorption force on the 0BB battery cell will become smaller, and the 0BB battery cell cannot be stably conveyed. If the adsorption hole diameter is greater than 2mm, it will cause the adsorption holes to be difficult to arrange in the adsorbed area. Therefore, in this embodiment, the adsorption hole diameter is set to 2mm, which can not only ensure a stable adsorption effect on the 0BB battery cell, but also arrange the adsorption holes in a specific order in the adsorbed area of ​​the 0BB battery cell.

[0017] In the case of the present invention, the multiple groups of adsorption holes 11 provided on the provided battery cell conveyor belt 10 can be arranged and combined in a variety of ways, all of which can achieve stable adsorption of 0BB battery cells, which is explained below through several embodiments.

[0018] like Figure 2 As shown, in the first example, two of the multiple groups of adsorption holes 11 are provided and the oblique angle with respect to the vertical direction of the conveying direction of the battery cell conveyor belt 10 is 10°-30°, wherein the spacing between the adsorption holes is 4-4.6mm. Specifically, in actual use, the angle adopted in this embodiment is 15°, and the spacing between the adsorption holes is 4.141mm.

[0019] like Figure 3 As shown, in the second example, the plurality of adsorption holes 11 are provided with three and the oblique angle with respect to the vertical direction of the conveying direction of the battery cell conveyor belt 10 is 37°-70°, wherein the spacing between the adsorption holes is 2.5-7.8mm. Specifically, in actual use, the angle adopted in this embodiment is 45°, and the spacing between the adsorption holes is 2.828mm.

[0020] like Figure 4As shown, in the third example, the plurality of adsorption holes 11 are provided with four and the oblique angle with respect to the vertical direction of the conveying direction of the battery cell conveyor belt 10 is 57°-79°, wherein the spacing between the adsorption holes is 2.5-6.8mm. Specifically, in actual use, the angle adopted in this embodiment is 65°, and the spacing between the adsorption holes is 3.155mm.

[0021] like Figure 5 As shown, in another possible implementation of the present invention, the battery cell conveyor belt 10 is provided with a single group of adsorption holes 12 and adsorption waist holes 13, and the adsorption waist holes 13 are at least arranged on both sides of the battery cell adsorbed area along the direction of the welding belt, and the adsorption waist holes 13 are arranged obliquely.

[0022] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that the present invention did not invent. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0023] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. Battery sheet conveyor belt, characterized in that: It comprises a single group of adsorption holes and multiple groups of adsorption holes, wherein the multiple groups of adsorption holes are at least arranged on both sides of the adsorbed area of ​​the battery cell along the direction of the welding strip, and the multiple groups of adsorption holes are provided with at least two adsorption holes arranged obliquely.

2. The battery sheet conveyor belt according to claim 1, characterized in that: The plurality of groups of adsorption holes are arranged as two adsorption holes.

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

4. The battery sheet conveyor belt according to claim 3, characterized in that: The oblique distance between two adsorption holes of the plurality of adsorption holes is 4-4.6 mm.

5. The battery sheet conveyor belt according to claim 1, characterized in that: The multiple groups of adsorption holes are arranged as three adsorption holes.

6. The battery sheet conveyor belt according to claim 5, characterized in that: The plurality of adsorption holes have an oblique angle of 37°-70° with respect to the vertical direction of the conveying direction of the battery cell conveyor belt.

7. The battery sheet conveyor belt according to claim 6, characterized in that: The oblique spacing between the three adsorption holes of the plurality of adsorption holes is 2.5-7.8 mm.

8. The battery sheet conveyor belt according to claim 1, characterized in that: The plurality of groups of adsorption holes are arranged as four adsorption holes.

9. The battery sheet conveyor belt according to claim 8, characterized in that: The plurality of adsorption holes have an oblique angle of 57°-79° with respect to a direction perpendicular to the conveying direction of the battery cell conveyor belt.

10. The battery sheet conveyor belt according to claim 9, characterized in that: The oblique spacing between the four adsorption holes of the multiple groups of adsorption holes is 2.5 mm to 6.8 mm.

11. Battery sheet conveyor belt, characterized in that: It comprises a single group of adsorption holes and adsorption waist holes, wherein the adsorption waist holes are at least arranged on both sides of the adsorbed area of ​​the battery sheet along the direction of the welding strip, and the adsorption waist holes are arranged obliquely.

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