Photovoltaic module laminating tool

Abstract

The utility model discloses a photovoltaic module lamination tool which comprises a rectangular lamination frame, the inner side edge of the lamination frame is provided with a plurality of plugs used for abutting against the side edge of a photovoltaic module, and the distance between every two adjacent plugs is consistent with the distance between welding strips of the photovoltaic module. During lamination, the lamination frame surrounds the periphery of the photovoltaic module, the side edge of the lamination module is wrapped with the adhesive tape with the through holes, the plugs are just correspondingly placed at the two ends of the welding strip to plug the through holes corresponding to the welding strip, airflow is prevented from flowing rapidly to drive the molten coating to flow along the welding strip, and then tin beads are avoided.

Description

Technical Field

[0001] The utility model relates to a photovoltaic component processing tool, in particular to a photovoltaic component lamination tool. Background Art

[0002] The grid lines of the busbarless cells are connected by hot pressing with low-temperature solder strips. During the hot pressing process, the coating on the surface of the low-temperature solder strips melts and then forms an alloy connection with the grid lines. Since vacuuming is required during the lamination process, the melted coating will move on the surface of the solder strips with the airflow and finally gather at the end of the solder strips to form large tin beads. On the one hand, after the coating moves with the airflow, there is no alloy connection of sufficient strength between the grid line and the solder strip, which affects the quality of the module. On the other hand, after the tin beads are formed, it will affect the light absorption of the module and cause hidden cracks at the edge of the battery cell. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to provide a photovoltaic module lamination tooling that avoids the formation of tin beads.

[0004] Technical solution: The photovoltaic module lamination tooling described in the utility model includes a rectangular lamination frame, and the inner side of the lamination frame is provided with a plurality of plugs for supporting the side of the photovoltaic module, and the distance between two adjacent plugs is consistent with the distance between the welding strips of the photovoltaic module.

[0005] During lamination, the lamination frame surrounds the periphery of the photovoltaic module, and the side of the laminated module is wrapped with tape with through holes. The plugs are placed at both ends of the solder strip to block the through holes corresponding to the solder strip, preventing the rapid flow of airflow and driving the melted coating to flow along the solder strip, thereby avoiding the formation of tin beads. There is a gap between two adjacent plugs, and this gap is used to maintain the normal flow of airflow in the rest of the photovoltaic module.

[0006] Preferably, a groove parallel to the photovoltaic module is provided in the middle of the height direction of the plug. During the lamination process, glue may overflow, and the groove is used to accommodate the overflowed glue during the lamination process.

[0007] Preferably, the groove is an arc-shaped groove. The plug is close to the lamination frame, and if glue overflows, the arc-shaped groove helps to contain the overflowed glue and helps to separate the photovoltaic module from the plug after lamination.

[0008] Preferably, a V-shaped groove is provided in the middle of the width direction of the plug. When the lamination frame is sleeved around the photovoltaic module, the plug has a margin away from the photovoltaic module, which is convenient for assembling the lamination frame and the photovoltaic module before lamination.

[0009] Preferably, a connecting strip is provided between two adjacent plugs, and the thickness of the connecting strip is smaller than the thickness of the plugs. On the one hand, the connecting strip increases the contact area between the plugs and the laminate frame, making the connection between the plugs and the laminate frame more secure; on the other hand, the plugs are connected into a string through the connecting strip, and the plug string can be directly processed and then assembled with the existing laminate frame to complete the transformation of the existing laminate frame, which is convenient for processing and saves resources.

[0010] Preferably, the plug is made of an elastic material, and more preferably, made of a high temperature resistant elastic material, such as silicone.

[0011] Preferably, the plug is coated with a non-stick coating, which helps the plug to be peeled off from the photovoltaic module.

[0012] Preferably, a high temperature cloth is provided on the back of the lamination frame.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. Avoiding the deviation of the coating material of the welding strip; 2. Facilitating the assembly and removal of the photovoltaic module; 3. Simple structure, and can be modified on the existing lamination frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0015] Figure 2 for Figure 1 Enlarged view of the structure in the middle.

[0016] Figure 3 It is a schematic diagram of the assembly structure of the laminate frame and the photovoltaic module according to the first embodiment of the utility model.

[0017] Figure 4 This is a side cross-sectional view of the assembly of the laminate frame and the photovoltaic module according to the first embodiment of the utility model.

[0018] Figure 5 This is a side cross-sectional view of the assembly of the laminate frame and the photovoltaic module according to the second embodiment of the utility model.

[0019] Figure 6 This is a schematic diagram of the plug structure of the third embodiment of the utility model. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0021] Example 1: Figure 1 , Figure 3 and Figure 4As shown, it is a schematic diagram of the overall structure and assembly structure of the utility model. The laminating frame 1 is rectangular as a whole, and a number of plugs 2 are evenly installed on the inner side of the long side of the laminating frame 1. The distance between two adjacent plugs 2 corresponds to the spacing of the solder strips of the photovoltaic module 4. When the photovoltaic module 4 is laminated, the side of the photovoltaic module 4 will be wrapped with a tape 5 with air holes. When vacuuming, the air flow flows along the air holes of the tape 5, and then carries the molten coating to flow along the solder strip. The plug 2 is used to abut the side of the photovoltaic module 4 to abut the tape hole used for the solder strip, change the airflow direction during the lamination process, and prevent the rapid flow of the airflow from driving the melted coating to flow along the solder strip, thereby avoiding the appearance of tin beads. The plug 2 can be prepared as a whole with the laminating frame 1, or it can be installed on the existing laminating frame 1. High-temperature cloth 3 is installed in the width direction and four corners of the back of the laminating frame 1.

[0022] like Figure 2 Said, for Figure 1 In the enlarged structural diagram of a right angle, a horizontal groove is opened in the middle of the height direction of the plug 2 (the free end, the end connected to the lamination frame is the fixed end). The cross-section of the bottom surface of the groove is arc-shaped or U-shaped to ensure that the bottom surface of the groove is a smooth arc surface. When the photovoltaic modules are laminated, there will be excess glue overflowing. The groove is opened to leave a margin for the glue that may overflow, so as to facilitate the outflow of the glue and prevent the photovoltaic modules after lamination from being uneven. If the glue overflows, the glue will connect the photovoltaic module and the plug, and the smooth arc surface will help to peel the glue from the plug. The outside of the plug 2 can also be coated with a non-stick coating, such as a polytetrafluoroethylene layer, to facilitate peeling from the glue.

[0023] like Figure 3 As shown, it is a schematic diagram of the assembly structure of the lamination frame 1 and the photovoltaic module 4. In this figure, the high temperature cloth 3 is omitted and the width (thickness) of the plug 2 is reduced to distinguish the plug 2 from the photovoltaic module 4. The plug 2 corresponds to the welding strip of the photovoltaic module 4 and is symmetrically located at both ends of the welding strip of the photovoltaic module 4.

[0024] When in use, the photovoltaic module 4 is pre-assembled, and the lamination frame 1 is put on the outside of the photovoltaic module 4, so that the plug 2 and the welding strip of the photovoltaic module 1 correspond one by one, and then the subsequent vacuum high-temperature lamination can be carried out.

[0025] Embodiment 2: As a variation of Embodiment 1, Figure 5 As shown, a V-shaped groove is provided in the middle of the width direction of the plug 2, and the bottom of the V-shaped groove faces the back side of the laminating frame 1 (the side with the high temperature cloth 3). The addition of the plug will reduce the gap between the side of the photovoltaic module 4 and the laminating frame 1, which will hinder the assembly of the laminating frame 1 and the photovoltaic module 4. In order to eliminate this obstruction, a V-shaped groove is provided in the middle of the width direction of the plug 2. During assembly, if the plug 2 is too close to the photovoltaic module 4, the plug 2 can be offset toward the laminating frame 1. The plug 2 is made of a high temperature resistant elastic material, such as silicone.

[0026] Embodiment 3: As a variation of Embodiment 1, Figure 6 As shown, the plugs 21 are connected in series (in the length direction) by connecting pieces 22, and the connecting pieces 22 are thinner than the plugs 2. By adding a plug string to the existing laminate frame, the same laminate frame tooling as the utility model can be made, which helps to utilize the existing laminate frame and save costs.

Claims

1. A photovoltaic module lamination tool, comprising a rectangular lamination frame (1), characterized in that: The inner side of the lamination frame is provided with a plurality of plugs (21) for abutting against the side of the photovoltaic module (4), and the distance between two adjacent plugs is consistent with the distance between the welding strips of the photovoltaic module.

2. The photovoltaic module lamination tooling according to claim 1, characterized in that: A horizontal groove is provided in the middle of the plug (21) in the height direction.

3. The photovoltaic module lamination tooling according to claim 2, characterized in that: The bottom surface of the groove is arc-shaped.

4. The photovoltaic module lamination tooling according to claim 1, characterized in that: A V-shaped groove is provided in the middle of the plug (21) in the width direction.

5. The photovoltaic module lamination tooling according to claim 1 or 4, characterized in that: The plug is made of elastic material.

6. The photovoltaic module lamination tooling according to claim 1, characterized in that: A connecting strip (22) is provided between two adjacent plugs (21), and the width of the connecting strip is smaller than the width of the plugs.

7. The photovoltaic module lamination tooling according to claim 1, characterized in that: The plug (21) is coated with a non-stick coating.

8. The photovoltaic module lamination tooling according to claim 1, characterized in that: A high-temperature cloth (3) is provided on the back of the lamination frame (1).

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