A back contact battery layout and fixing structure

Abstract

This utility model relates to a back-contact battery arrangement and fixing structure, comprising: a back plate; a first adhesive film in contact with the back plate; a battery string mounted on the first adhesive film, the battery string comprising: multiple sets of gridless cells, solder strips for connecting the gridless cells; a second adhesive film and photovoltaic glass respectively disposed on the battery string, and positioning limiting members for restricting the battery string on both the first and second adhesive films. By using positioning limiting members, the battery string is restricted, preventing the battery string from shifting position between the first and second adhesive films during the lamination process of the photovoltaic module, thus reducing the appearance defect rate; at the same time, it prevents damage to the battery cells, which would affect the photoelectric conversion efficiency of the photovoltaic module.

Description

Technical Field

[0001] This utility model belongs to the field of back contact battery technology, specifically relating to a back contact battery layout and fixing structure. Background Technology

[0002] Back-contact batteries have both positive and negative electrodes located on the back of the battery. They are connected by welding during the manufacturing process. During welding, the battery cells may shift in position. This method can cause the battery to warp and, after lamination, can easily lead to cracks in the battery cells, affecting the battery's lifespan. Therefore, a layout and fixing structure is needed to prevent misalignment of the battery cells. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a back contact battery layout and fixing structure, which has the advantages of preventing displacement and high stability.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A back-contact battery layout and fixing structure includes: a back plate; a first adhesive film in contact with the back plate; a battery string mounted on the first adhesive film, the battery string including: multiple sets of gridless cells, solder strips for connecting the gridless cells; a second adhesive film and photovoltaic glass respectively disposed on the battery string, and positioning limiters for limiting the battery string are provided on both the first adhesive film and the second adhesive film.

[0005] As a preferred embodiment of this utility model, a positioning isolation strip is provided between adjacent gridless batteries.

[0006] To achieve the above technical solution, the isolation strip is set to prevent the main grid-less battery from breaking during the lamination process, thus affecting the use of the main grid-less battery.

[0007] As a preferred embodiment of the present invention, the positioning and limiting component includes: a positioning area and a positioning tape pasted on the positioning area. The positioning tape includes: a first positioning tape and a second positioning tape connected to the first positioning tape.

[0008] To achieve the above technical solution, the first positioning tape and the second positioning tape work together to limit the position of the battery string, preventing the battery string from shifting during the lamination process and affecting the encapsulation effect.

[0009] As a preferred embodiment of the present invention, positioning and limiting components are respectively disposed on the four sides of the first adhesive film and the second adhesive film, and a limiting area is formed between the first positioning tape and the second positioning tape, and the battery string is disposed within the limiting area.

[0010] As a preferred embodiment of the present invention, the first adhesive film and the second adhesive film are EVA transparent adhesive films.

[0011] In summary, this utility model has the following beneficial effects: By using positioning and limiting components, the battery string is positioned to prevent displacement between the first and second encapsulant films during the lamination process of the photovoltaic module, thus reducing the appearance defect rate. At the same time, it prevents damage to the battery cells, which would affect the photoelectric conversion efficiency of the photovoltaic module.

[0012] Meanwhile, the isolation strip prevents the gridless battery from breaking during the lamination process, thus affecting its use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the positioning tape structure of this utility model.

[0016] Figure 3 This is a schematic diagram of another embodiment of the positioning tape of this utility model.

[0017] Figure 4 This is a schematic diagram of another embodiment of the positioning tape of this utility model.

[0018] Figure 5 This is a schematic diagram of the front structure of the gridless battery of this utility model.

[0019] The numbers and letters in the diagram represent the names of the corresponding components: 1. Backsheet; 2. First adhesive film; 3. Battery string; 4. Gridless battery; 5. Solder ribbon; 6. Second adhesive film; 7. Photovoltaic glass; 8. Spacer strip; 9. Positioning tape. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0021] like Figure 1 , Figure 2 A back-contact battery layout and fixing structure includes: a back plate 1; a first adhesive film 2 in contact with the back plate 1; and a battery string 3 mounted on the first adhesive film 2. The battery string 3 includes: multiple groups of gridless batteries 4 and solder strips 5 for connecting the gridless batteries 4.

[0022] The battery string 3 is provided with a second adhesive film 6 and a photovoltaic glass 7 in sequence. Both the first adhesive film 2 and the second adhesive film 6 are provided with positioning limiters for limiting the battery string 3.

[0023] exist Figure 5 In the process, a positioning isolation strip 8 is provided between adjacent gridless cells 4. The isolation strip 8 supports the solder strip 5 on the adjacent gridless cells 4, preventing the solder strip 5 from cracking the edge of the gridless cells 4 during the lamination process.

[0024] Specifically, the positioning and limiting component includes: a positioning area and a positioning tape 9 pasted on the positioning area. The positioning tape 9 includes: a first positioning tape and a second positioning tape connected to the first positioning tape.

[0025] Under the action of the positioning and limiting component, the battery string 3 is limited to prevent the battery string 3 from shifting position during the lamination process; furthermore, a positioning area is formed on the first adhesive film 2 and the second adhesive film 6, so that the positioning tape 9 can be quickly pasted on the positioning area.

[0026] Positioning and limiting components are respectively provided on the four sides of the first adhesive film 2 and the second adhesive film 6, and a limiting area is formed between the first positioning tape and the second positioning tape, and the battery string 3 is located in the limiting area.

[0027] In this embodiment, the placement position of the positioning tape 9 is also given, such as... Figure 3 The positioning method shown is as follows: the first positioning tape and the second positioning tape can be directly pasted to the battery string 3, so that the first positioning film and the second film 6 can limit and fix the battery string 3.

[0028] exist Figure 4 In this embodiment, another specific method for applying the positioning adhesive is also provided.

[0029] Finally, the first adhesive film 2 and the second adhesive film 6 are EVA transparent adhesive films.

[0030] In this embodiment, a back contact battery layout and fixing step is also provided. Specifically, the back plate 1 is first placed on the worktable, and the first adhesive film 2 and the second adhesive film 6 are cut to a fixed size to facilitate subsequent lamination operations. The first adhesive film 2 is placed on the back plate 1, and the first positioning tape and the second positioning tape are attached to the first adhesive film 2 by applying adhesive electrodes. The first positioning tape and the second positioning tape can also be directly pasted to the battery string 3 to achieve bonding and fixation with the first adhesive film 2 and the second adhesive film 6; Furthermore, the battery string 3 is placed within the limiting area formed by the first positioning tape and the second positioning tape. Since the second adhesive film 6 is also provided with the first positioning tape and the second positioning tape, the battery string 3 can be doubly limited. Then, the photovoltaic glass 7 is placed on the second adhesive film 6 to achieve the final lamination and encapsulation.

[0031] By using positioning and limiting components, the battery string 3 is positioned to prevent displacement between the first encapsulant film 2 and the second encapsulant film 6 during the lamination process of the photovoltaic module, thereby reducing the appearance defect rate. At the same time, it prevents damage to the battery cells, which would affect the photoelectric conversion efficiency of the photovoltaic module.

[0032] Meanwhile, the isolation strip 8 can prevent the gridless battery 4 from breaking during the lamination process, thus affecting the use of the gridless battery 4.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A back-contact battery layout and fixing structure, characterized in that, include: Back panel (1); The first adhesive film (2) in contact with the back plate (1); The battery string (3) is mounted on the first adhesive film (2). The battery string (3) includes: multiple groups of gridless batteries (4) and solder strips (5) for connecting the gridless batteries (4). The second adhesive film (6) and photovoltaic glass (7) are respectively provided on the battery string (3). The first adhesive film (2) and the second adhesive film (6) are both provided with positioning limiters for limiting the battery string (3).

2. A back contact cell layout fixation structure according to claim 1, characterized in that, A positioning isolation strip (8) is provided between adjacent gridless cells (4).

3. A back contact cell layout fixation structure according to claim 1, wherein The positioning limiter includes: a positioning area and a positioning tape (9) pasted on the positioning area. The positioning tape (9) includes: a first positioning tape and a second positioning tape connected to the first positioning tape.

4. A back contact cell layout fixation structure according to claim 3, wherein Positioning and limiting components are respectively provided on the four sides of the first adhesive film (2) and the second adhesive film (6), and a limiting area is formed between the first positioning tape and the second positioning tape, and the battery string (3) is located in the limiting area.

5. A back contact cell layout fixation structure according to claim 1, wherein The first adhesive film (2) and the second adhesive film (6) are EVA transparent adhesive films.

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