Belt pressing device and conveying device for series welding of back contact battery pieces

Abstract

The utility model belongs to the field of back contact battery production, and particularly relates to a belt pressing device and a conveying device for series welding of back contact battery pieces. The pressing belt device for series welding of the back contact battery pieces comprises a pressing seat, a plurality of pressing belts and pressing needles, the pressing belts are arranged on the pressing seat, the pressing needles are arranged on the pressing belts, and the pressing needles are used for pressing welding belts. According to the belt pressing device, the welding belt can be pressed when the battery piece is conveyed and welded, the welding belt is prevented from moving, and the welding quality is improved.

Description

Technical Field

[0001] The utility model belongs to the field of back contact battery production, and in particular relates to a belt pressing device and a conveying device for back contact battery slice serial welding. Background Art

[0002] At present, the demand for photovoltaic cell modules is increasing. In the production process of photovoltaic cell modules, it is necessary to weld the welding strips to the grid lines of two adjacent cells online to achieve the connection of the cells. Figure 5 As shown in the back contact cell welding, since all the grid lines of the cell are on the backlight side, the flat welding ribbon connecting the two cells needs to be placed on the same side of the cell. The preparation work before welding requires that the welding ribbon connecting the two cells be fixed to the target position at the same time. However, the existing welding tooling can only fix the welding ribbon on a single cell, and the position accuracy of the rear half of the welding ribbon cannot be guaranteed. At the same time, after placement, it needs to be transported to the heating position by a conveyor belt to realize heating welding. However, there is a problem of welding ribbon movement during the transportation process, resulting in poor welding quality.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a belt pressing device and a conveying device for back-contact battery cell string welding. The belt pressing device of the utility model can press the welding belt during battery cell conveying and welding to prevent the welding belt from moving and improve the welding quality.

[0005] The utility model includes the following technical solutions:

[0006] The utility model firstly provides a belt pressing device for back contact battery cell string welding, comprising a pressure seat, a pressure belt and a pressure needle, wherein a plurality of pressure belts are arranged on the pressure seat, and the pressure needle is arranged on the pressure belt, and the pressure needle is used to press the welding belt.

[0007] Furthermore, a plurality of pressing belts are evenly arranged in the middle of the pressing seat.

[0008] Furthermore, the pressure pins at both ends of the pressure belt act on two adjacent batteries respectively, and the pressure pins at both ends of a pressure belt act on the same welding belt.

[0009] Furthermore, the pressing belt is provided with a through connection hole, and the pressing needle is arranged in the connection hole.

[0010] Furthermore, both ends of the pressing needle are arranged outside the connecting hole, and limiting bosses are arranged at both ends of the pressing needle; a spring is arranged on the pressing needle outside the connecting hole, and the spring is located between the limiting boss and the pressing belt.

[0011] Furthermore, the belt pressing device is an axisymmetric structure.

[0012] The second aspect of the utility model provides a conveying device for back-contact battery string welding, comprising a conveyor belt and the above-mentioned belt pressing device, wherein at least two belt pressing devices are provided.

[0013] Furthermore, it also includes platforms arranged on both sides of the conveyor belt, and magnetic parts for cooperating with the platforms are arranged at both ends of the belt pressing device.

[0014] Furthermore, the belt pressing device is arranged in an I-shape.

[0015] By adopting the above technical solution, the utility model has the following advantages:

[0016] The belt pressing device of the utility model can press the welding belt tightly when the battery sheet is conveyed and welded, so as to prevent the welding belt from moving and improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic structural diagram of a belt pressing device for back contact battery cell string welding in an embodiment of the utility model;

[0019] Figure 2 A top view of a belt pressing device for back contact battery cell string welding in an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the pressing belt and the pressing needle in the embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the use and coordination relationship of a pressure belt device for back contact battery cell string welding in an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the back contact battery described in the background technology of the present utility model;

[0023] In the figure: 10-pressing seat, 20-pressing belt, 30-pressing needle, 40-spring, 50-limiting boss. DETAILED DESCRIPTION

[0024] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0026] This embodiment provides a back contact battery cell string welding pressing device, such as Figure 1 , Figure 2 As shown, it includes a pressing seat 10, a pressing belt 20 and a pressing needle 30. A plurality of pressing belts 20 are arranged on the pressing seat 10, and the pressing needle 30 is arranged on the pressing belt 20. The pressing needle 30 is used to press the welding belt.

[0027] Furthermore, a plurality of pressing belts 20 are evenly arranged in the middle of the pressing seat 10. The number of the pressing belts 20 can be half the number of the battery grid lines, so that two battery cells can be welded at one time.

[0028] Because the two ends of a welding strip are respectively located on two battery cells, so as to realize the welding of two battery cells, further, as Figure 2 As shown, the pressing needles 30 at both ends of the pressing belt 20 act on two adjacent batteries respectively, and the pressing needles 30 at both ends of a pressing belt 20 act on the same welding belt; that is, both ends of a pressing belt 20 are arranged beyond the pressing seat 10, so as to ensure the stability of the welding belt and prevent the welding belt from moving.

[0029] Furthermore, the pressing belt 20 is provided with a through connection hole, and the pressing needle 30 is arranged in the connection hole.

[0030] Furthermore, both ends of the pressing needle 30 are arranged outside the connecting hole, and both ends of the pressing needle 30 are provided with limiting bosses 50; a spring 40 is arranged on the pressing needle 30 outside the connecting hole, and the spring 40 is located between the limiting boss 50 and the pressing belt 20. With such a structure, the pressing needle 30 can act on the welding belt, and the contact is elastic, so as to avoid the rigid connection from being crushed.

[0031] Preferably, Figure 3The lower end of the pressing needle 30 is arranged outside the connecting hole, and a limiting boss 50 is arranged at the lower end of the pressing needle 30 . The limiting boss 50 is connected to the pressing belt 20 through a spring 40 .

[0032] Furthermore, the tape pressing device is an axisymmetric structure, so that the force acting on the welding tape is more uniform, the stability of the pressing is improved, and the welding tape is ensured not to move.

[0033] This embodiment also provides a conveying device for back-contact battery string welding, including a conveyor belt and the above-mentioned belt pressing device, and at least two of the belt pressing devices are provided.

[0034] like Figure 4 As shown, a diagram of the use status of two pressing belt devices is shown. The battery cell is not shown in the figure. It should be pointed out that when the two pressing belt devices are in use, the pressing belts 20 are arranged at intervals. The two pressing belt devices located on the same battery cell are respectively used to press the welding belt for welding the positive electrode and the welding belt for welding the negative electrode.

[0035] Furthermore, it also includes platforms arranged on both sides of the conveyor belt, and magnetic parts for cooperating with the platforms are arranged at both ends of the belt pressing device. Through magnetic cooperation, the stability of the belt pressing device is ensured during the conveyor belt transportation process. The magnetic parts can be magnets.

[0036] The belt pressing device is arranged in an I-shape, which is more conducive to the arrangement of magnetic parts.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A belt pressing device for back contact battery cell string welding, characterized in that: The invention comprises a pressing seat (10), a pressing belt (20) and a pressing needle (30); a plurality of pressing belts (20) are arranged on the pressing seat (10); the pressing belt (20) is provided with the pressing needle (30); and the pressing needle (30) is used for pressing the welding belt.

2. A back contact battery cell string welding pressing device as claimed in claim 1, characterized in that: A plurality of pressing belts (20) are evenly arranged in the middle of the pressing seat (10).

3. A back contact battery cell string welding pressing device as claimed in claim 2, characterized in that: The pressure needles (30) at both ends of the pressure belt (20) act on two adjacent batteries respectively, and the pressure needles (30) at both ends of a pressure belt (20) act on the same welding belt.

4. A back contact battery cell string welding pressing device as claimed in claim 1, characterized in that: The pressing belt (20) is provided with a through connection hole, and the pressing needle (30) is arranged in the connection hole.

5. A back contact battery cell string welding pressing device as claimed in claim 4, characterized in that: Both ends of the pressing needle (30) are arranged outside the connecting hole, and limiting bosses (50) are arranged at both ends of the pressing needle (30); a spring (40) is arranged on the pressing needle (30) outside the connecting hole, and the spring (40) is located between the limiting boss (50) and the pressing belt (20).

6. A back contact battery cell string welding belt pressing device according to any one of claims 1 to 5, characterized in that: The belt pressing device is an axisymmetric structure.

7. A conveying device for string welding, characterized in that: It comprises a belt pressing device as described in any one of claims 1 to 6, wherein at least two belt pressing devices are provided.

8. A conveying device for string welding as claimed in claim 7, characterized in that: It also includes platforms arranged on both sides of the belt pressing device, and magnetic parts for cooperating with the platforms are arranged at both ends of the belt pressing device.

9. A conveying device for string welding as claimed in claim 8, characterized in that: The belt pressing device is arranged in an I-shape.

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