Equipment for arranging blocking part for photovoltaic module
By incorporating blocking and limiting components into photovoltaic modules, the short-circuit problem caused by relative displacement of the cell strings during lamination is solved, thereby improving the reliability and sealing of the modules.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-03-31
AI Technical Summary
In existing photovoltaic modules, the relative displacement of the cell strings during the lamination process can easily occur, leading to short circuits between adjacent cells and affecting the high-density packaging and reliability of the module.
A blocking part is set between adjacent battery strings. The blocking part is fixed to the battery cell to increase friction and prevent relative displacement. The spacing between the strings is limited by the limiting part to avoid short circuit.
This effectively avoids short circuits between adjacent battery strings, improves the reliability and sealing of photovoltaic modules, and reduces the relative displacement between battery strings.
Smart Images
Figure CN224069043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic module manufacturing technology, and in particular to a photovoltaic module and a device for setting a blocking part for a photovoltaic module. Background Technology
[0002] In existing photovoltaic (PV) modules, cell strings are typically formed by connecting multiple cells in series using solder ribbons; the solder ribbons are the only connecting component between adjacent cells. Therefore, during the process of arranging multiple cells in parallel to form a cell array and laminating them, two cells side-by-side in adjacent strings can easily short-circuit. Furthermore, as the encapsulant flows during lamination, the two cells side-by-side in adjacent strings will also shift relative to each other, making it difficult to align the cell edges. This negatively impacts the high-density encapsulation and reliability of the PV module. Utility Model Content
[0003] In view of this, the present invention provides a photovoltaic module and a device for setting a blocking part for the photovoltaic module. By setting a blocking part between multiple parallel battery strings, the cells in adjacent battery strings will not be connected due to displacement, thus avoiding the short circuit problem between adjacent battery strings. Furthermore, the blocking part fixed to the battery string increases the friction between the cells in adjacent battery strings, reducing the relative displacement between the battery strings.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] In a first aspect, the present invention provides a photovoltaic module, comprising: a backsheet, a backing film, a cell array, a fronting film, and a cover plate stacked from bottom to top; wherein the cell array comprises: a plurality of parallel cell strings; at least one blocking portion is provided between each two adjacent cell strings; the blocking portion is fixed to one of the adjacent cell strings.
[0006] Optionally, the number of the blocking portions is not less than the number of battery cells included in the battery string; each of the blocking portions is fixed to one of the battery cells in the adjacent battery string.
[0007] Optionally, if the number of the blocking portions is the same as the number of battery cells in the battery string, one blocking portion is provided between two opposite battery cells in two adjacent battery strings.
[0008] Optionally, in two adjacent battery strings, the blocking portion is fixed on each of the two opposite battery cells.
[0009] Optionally, the blocking part is a U-shaped structure, which is embedded in the edge of the battery cell.
[0010] Optionally, the thickness of the blocking portion is 0.1 mm to 0.7 mm; and / or, the spacing between two adjacent battery strings in the battery array is 0.1 mm to 1.4 mm.
[0011] Optionally, it further includes: providing a plurality of limiting parts between each pair of adjacent battery strings, wherein each limiting part is fixed to two opposite battery cells in the two adjacent battery strings.
[0012] Secondly, this utility model provides a device for setting a blocking part for the above-mentioned photovoltaic module, comprising: a battery string placement platform for placing battery strings and an operating handle disposed on the side of the battery string placement platform; wherein, the operating handle includes an operating arm and an operating head, and the operating head and the operating arm are rotatably connected; a vacuum adsorption hole for adsorbing the blocking part is provided on the operating head; the operating arm is used to drive the operating head, so that the operating head adsorbs the blocking part through the vacuum adsorption hole and fixes the blocking part to at least one side of the battery string, so as to use the battery string with the fixed blocking part to prepare a photovoltaic module.
[0013] The first aspect of the above-mentioned utility model has the following advantages or beneficial effects: by setting a blocking part between multiple parallel battery strings, the battery cells in adjacent battery strings will not be connected due to displacement, thus avoiding the short circuit problem between adjacent battery strings. Furthermore, the blocking part fixed to the battery strings increases the friction between the battery cells in adjacent battery strings, reducing the relative displacement between the battery strings. Attached Figure Description
[0014] The accompanying drawings are provided to better understand this utility model and do not constitute an undue limitation thereof. Wherein:
[0015] Figure 1 This is a schematic diagram illustrating the positional relationship between multiple cells in adjacent battery strings in existing technology;
[0016] Figure 2 This is a schematic diagram of a battery array in a photovoltaic module according to an embodiment of the present invention;
[0017] Figure 3 This is a schematic diagram of the blocking part's installation position according to an embodiment of the present utility model;
[0018] Figure 4 This is a schematic diagram of another type of battery array in a photovoltaic module according to an embodiment of the present invention;
[0019] Figure 5 This is a schematic diagram showing another blocking part setting position according to an embodiment of the present utility model;
[0020] Figure 6 This is a schematic diagram of another type of battery array in a photovoltaic module according to an embodiment of the present invention;
[0021] Figure 7 This is a schematic diagram showing another blocking part setting position according to an embodiment of the present utility model;
[0022] Figure 8 This is a schematic diagram of another type of battery array in a photovoltaic module according to an embodiment of the present invention;
[0023] Figure 9 This is a schematic diagram showing another blocking part setting position according to an embodiment of the present utility model;
[0024] Figure 10 This is a schematic diagram of another type of battery array in a photovoltaic module according to an embodiment of the present invention;
[0025] Figure 11 This is a schematic diagram of a device for setting a blocking part for a photovoltaic module according to an embodiment of the present utility model;
[0026] Figure 12 This is a schematic diagram of the working state of a device for setting a blocking part for a photovoltaic module according to an embodiment of the present utility model;
[0027] Figure 13 This is a schematic diagram of another working state of a device for setting a blocking part for a photovoltaic module according to an embodiment of the present utility model;
[0028] Figure 14 This is a schematic diagram of another device for setting a blocking part for a photovoltaic module according to an embodiment of the present utility model;
[0029] Figure 15 This is a structural schematic diagram of a photovoltaic module provided according to an embodiment of the present utility model.
[0030] The attached figures are labeled as follows:
[0031] 1-Battery string; 11-Battery cell; 2-Blocking part; 3-Limiting part; 4-Battery string placement platform; 5-Operating handle; 51-Operating arm; 52-Operating head; 53-Vacuum suction hole; 54-U-shaped groove; 6-Heating component;
[0032] 100 - Backplate; 200 - Rear adhesive film; 300 - Battery array; 400 - Front adhesive film; 500 - Cover plate. Detailed Implementation
[0033] A solar cell is a thin-film photovoltaic semiconductor that directly generates electricity using sunlight. Also known as a "solar chip" or "photovoltaic cell," it can instantly output voltage and generate current when a circuit is established, provided it receives sufficient illumination. In physics, this is called photovoltaic (PV). To facilitate and clearly describe the fabrication method and the solar cell of this invention, exemplary embodiments of this invention are described below with reference to the accompanying drawings. These embodiments include various details to aid understanding and should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.
[0034] Figure 1 This illustrates the positional relationship between multiple battery cells 11 in adjacent battery strings 1 in the prior art, from... Figure 1 As can be seen, for each battery string 1 containing multiple battery cells 11, since the multiple battery cells 11 are only connected by solder strips, relative displacement will occur between the multiple battery cells 11. This causes the multiple battery cells 11 in a battery string 1 to not be arranged in a straight line, but rather staggered. This results in two opposite battery cells 11 in adjacent battery strings 1 making lateral contact (e.g., ...). Figure 1 (Circled portion) Because current flows around the edges of the solar cell 11, when two opposite solar cells 11 in adjacent solar strings 1 come into contact, it will cause a short circuit in the solar string 1, ultimately leading to the failure of the photovoltaic module's electrical performance. Therefore, this utility model embodiment addresses this problem by designing a photovoltaic module that can prevent two opposite solar cells 11 in adjacent solar strings 1 from making electrical contact through the setting of the blocking part 2.
[0035] In one embodiment of this utility model, such as Figure 2 and Figure 15 As shown, this embodiment provides a photovoltaic module, which includes: a backsheet 100, a backing film 200, a cell array 300, a fronting film 400, and a cover plate 500 stacked from bottom to top; wherein, the cell array 300 includes: a plurality of parallelly arranged cell strings 1; at least one blocking portion 2 is provided between each two adjacent cell strings 1; the blocking portion 2 is fixed to the adjacent cell string 1. Figure 2 This diagram shows a structural schematic of a cell array in a photovoltaic module. Figure 15The diagram shows the overall structure of the photovoltaic module. It should be noted that this utility model mainly improves the cell array 300 in the photovoltaic module. The back sheet 100, the rear encapsulant film 200, the front encapsulant film 400, and the cover plate 500 can all utilize known structures in the prior art. This utility model does not further limit these aspects.
[0036] from Figure 2 As can be seen, the blocking part 2 not only prevents two opposing battery cells 11 in adjacent battery strings 1 from contacting each other, but also connects multiple battery cells 11 in the same battery string 1 through the blocking part 2, thus preventing relative movement between adjacent battery cells 11 in the same battery string 1.
[0037] In one optional embodiment, the blocking portion 2 can be made of a transparent film material with a certain degree of friction, including at least one of the following: EVA, POE, EPE, PVB, TPE, and silicone strips. For photovoltaic modules, light conversion performance is a crucial performance parameter; therefore, the material of the blocking portion 2 should be a transparent material that does not discolor. Furthermore, the friction inherent in the material of the blocking portion 2 itself can provide greater resistance between two opposing solar cells 11, thereby reducing the relative displacement between two opposing solar cells 11 in adjacent cell strings 1.
[0038] In practical applications, to minimize material waste and reduce material costs, the blocking part 2 can be divided into multiple parts, meaning that the above objective can be achieved using only a small number of blocking parts 2. In an optional embodiment, the number of blocking parts 2 is not less than the number of battery cells 11 contained in the battery string 1; each blocking part 2 is fixed to one battery cell 11 in its adjacent battery string 1.
[0039] and, Figure 2 The blocking part 2 shown needs to be fixed to the side of the battery cell 11 by means of adhesive bonding, which results in poor bonding performance. Therefore, this utility model addresses the issue of the blocking part 2 being fixed to the side of the battery cell 11 by means of adhesive bonding. Figure 3 The setup shown ensures the robustness of the blocking part 2 while reducing material waste, achieving the goal of preventing electrical contact between the battery cells 11 and reducing relative displacement. Specifically, the resulting battery array 300 is as follows: Figure 4 As shown, from Figure 4 It can be seen that by setting the blocking part 2, it can be ensured that there will be no problem of adjacent battery cells between multiple parallel battery strings 1 in the battery array 300, which effectively ensures the reliability of the battery array 300.
[0040] In a further optional embodiment, when the number of blocking portions 2 is the same as the number of battery cells 11 included in the battery string 1, a blocking portion 2 is provided between two opposing battery cells 11 in two adjacent battery strings 1. This embodiment of the invention specifies that a blocking portion 2 is provided between two opposing battery cells 11. Therefore, the invention does not specifically limit which opposing battery cell 11 the blocking portion 2 is located on; it can be selected from either of the two opposing battery cells 11 according to actual needs.
[0041] It is understood that the limitation on the number of blocking parts 2 in this embodiment of the invention is only for saving materials and does not mean that only one blocking part 2 can be provided on each battery cell 11. For example, it can be as follows: Figure 5 and Figure 6 As shown, multiple blocking parts 2 are provided on the same side of a battery cell 11 to improve the blocking performance against adjacent battery strings 1.
[0042] In another alternative embodiment, the blocking portion 2 can also be fixed on both opposite battery cells 11 in two adjacent battery strings 1, such as... Figure 7 and Figure 8 As shown. Specifically, as Figure 8 As shown, the blocking portions 2 fixed on two opposing battery cells 11 can be arranged adjacent to each other, that is, the blocking portion 2 on one battery cell 11 is adjacent to the blocking portion 2 on the other battery cell 11. The double blocking portions 2 better isolate the contact between opposing battery cells 11 on adjacent battery strings 1. Alternatively, as shown... Figure 9 and Figure 10 As shown, the blocking parts 2 fixed on the two opposite battery cells 11 are arranged crosswise, that is, the blocking part 2 on each battery cell 11 is adjacent to the battery cell 11 on the adjacent battery string 1, and there is no connection between the two opposite blocking parts 2.
[0043] It is understood that the various embodiments provided above are exemplary descriptions of the blocking part 2 being disposed at different positions on the battery cell 11. The placement position and number of the blocking part 2 shown in the figures are not limited to the methods listed in the embodiments of this utility model. The placement position and number of the blocking part 2 can be improved according to actual needs to enhance the blocking effect.
[0044] Regarding the specific structure of the blocking part 2, in one optional embodiment, such as Figure 3 , Figure 5 , Figure 7 as well as Figure 9 As shown, the blocking part 2 has a U-shaped structure, and the U-shaped structure is embedded in the edge of the battery cell 11. It can be understood that setting the blocking part 2 as a U-shaped structure can increase the contact area with the battery cell 11, thereby increasing the stability of the connection with the battery cell 11.
[0045] Regarding the thickness of the blocking portion 2, in one optional embodiment, the thickness of the blocking portion 2 is 0.1mm to 0.7mm, such as 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, etc. Here, thickness refers to the distance between the blocking portion and the protruding part of the solar cell 11. As the density requirements of photovoltaic modules increase, the requirements for the spacing between multiple cell strings 1 in the cell array 300 also increase. Therefore, it is not advisable to make the blocking portion 2 too thick, as this would affect the arrangement density of the cell strings 1 in the photovoltaic module. However, if the thickness is too small, it may not be able to completely block the current between two opposite solar cells 11 in adjacent cell strings 1, thus affecting the blocking effect. In a further optional embodiment, the spacing between two adjacent cell strings 1 included in the cell array 300 is 0.1mm to 1.4mm, preferably 0.2mm to 0.7mm, such as 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, etc.
[0046] This invention not only utilizes the blocking part 2 to block the battery cells 11 in adjacent battery strings 1, but also provides a limiting part 3 to limit the spacing between adjacent battery strings 1, so as to prevent adjacent battery strings 1 from being too far apart due to the flow of the laminating film during the lamination process. In an optional embodiment, a plurality of limiting parts 3 are provided between every two adjacent battery strings 1, wherein each limiting part 3 is fixed to two opposite battery cells 11 in the two adjacent battery strings 1. Exemplarily, in Figure 4 , Figure 6 , Figure 8 and Figure 10 As can be seen from the diagram, two battery cells 11 that are partially opposite each other in adjacent battery strings 11 are connected by limiting parts 3 to ensure that adjacent battery strings 11 are not too far apart. It is precisely because of the setting of the limiting parts 3 that the string spacing in this embodiment of the present invention can be guaranteed to be between 0.2mm and 0.7mm.
[0047] In summary, the photovoltaic module provided by this utility model, by setting a blocking part between multiple parallel cell strings, prevents the cells in adjacent cell strings from connecting due to displacement, thus avoiding the short circuit problem between adjacent cell strings. Furthermore, the blocking part fixed to the cell string increases the friction between the cells in adjacent cell strings, reducing the relative displacement between the cell strings.
[0048] To prepare the aforementioned photovoltaic module, this embodiment of the invention also provides a device for setting a blocking portion for the photovoltaic module, such as... Figures 11 to 13As shown, it includes: a battery string placement platform 4 for placing battery strings 1 and an operating handle 5 disposed on the side of the battery string placement platform 4; wherein, the operating handle 5 includes an operating arm 51 and an operating head 52, and the operating head 52 and the operating arm 51 are rotatably connected; the operating head 51 is provided with a vacuum adsorption hole 53 for adsorbing the blocking part 2; the operating arm 51 is used to drive the operating head 52, so that the operating head 52 adsorbs the blocking part 2 through the vacuum adsorption hole 53 and fixes the blocking part 2 to at least one side of the battery string 1, so as to use the battery string 1 with the blocking part 2 fixed thereon to prepare a photovoltaic module.
[0049] from Figures 11 to 13 As can be seen, the operating head 52 in this embodiment of the present invention can be axially rotated around the end of the operating arm 51. First, the vacuum adsorption hole 53 is used to adsorb the blocking part 2 in the vertical direction. Then, the operating head 52 is rotated toward the side of the battery string 1 so that the adsorbed blocking part 2 faces the side of the battery string 1. Finally, by moving toward the battery string 1, the blocking part 2 is fixed to one side of the battery string 1.
[0050] In a further optional embodiment, a U-shaped groove 54 is also provided on the operating head 52; vacuum adsorption holes 53 are distributed on both sides of the U-shaped groove 54; the operating arm 51 further drives the operating head 52 to drive the U-shaped groove 54 to embed into the edge of a battery cell 11 in the battery string 1, and to make the blocking part 2 adsorbed by the vacuum adsorption hole 53 follow the edge of the battery cell 11 into the U-shaped groove 54, forming a U-shaped structure embedded in the edge of the battery cell 11.
[0051] Understandably, the blocking part 2, under the adsorption force of the vacuum adsorption hole 53, adheres to the surface of the operating head 52 in a thin film form and does not have the ability to be shaped. Therefore, in order to allow the blocking part 2 to better wrap around the side of the battery string 1, this embodiment of the utility model achieves this through the U-shaped groove 54 on the operating head 52. That is, while the U-shaped groove 54 is inserted into the edge of the battery piece 11, the blocking part 2 is deformed, and the contour of the deformation matches the battery piece 11, ensuring the fixed connection effect between the blocking part 2 and the battery piece 11.
[0052] It should be noted that, for the process of fixing the blocking part 2 to the side of the battery cell 11, it is necessary to ensure that the side of the blocking part 2 facing the battery cell 11 has adhesive properties, that is, it is fixed to the battery cell 11 after deformation. If the material of the blocking part 2 itself does not have adhesive properties, then other curing devices are required.
[0053] In further optional implementations, such as Figure 14As shown, it also includes: a heating assembly 6 disposed above the battery string placement platform 3; the heating assembly 6 heats the battery cell 11 to make the blocking part 2 adhere to the battery cell 11. Specifically, when the blocking part 2 itself does not have adhesive properties (e.g., when EVA material is selected), the battery cell 11 can be heated by an external heating assembly. When the blocking part 2 contacts the edge of the battery cell 11 through the operating head 52, the side of the blocking part 2 adjacent to the battery cell 11 will melt under the high temperature of the battery cell 11, while the side of the blocking part 2 not adjacent to the battery cell 11 will not melt. By cooling and curing, the blocking part 2 can be finally fixed to the battery cell 11. The specific heating method of the heating assembly 6 includes at least one of the following: infrared heating, electromagnetic induction heating, hot air heating, and oven heating, etc.
[0054] Exemplary, the process of using the device for setting a blocking part for a photovoltaic module provided by this utility model mainly includes: Step 1, placing a battery string 1, which is welded from multiple battery cells 11, on a battery string placement platform 3; Step 2, heating one side of the surface of the battery string 1 using a heating component 6; Step 3, using an operating head 52 to adsorb the blocking part 2, and rotating the operating head 52 to position the blocking part 2 facing the side of the battery cell 11; Step 4, using an operating arm 51 to drive the operating head 52 to move towards the battery cell 11, so that the side edge of the battery cell 11 is inserted into the U-shaped groove 54 on the operating head 52, while the blocking part 2 is attached to the battery cell 11. The blocking part 2, attached to one side of the battery cell 11, melts under the high temperature of the battery cell 11, thus becoming fixedly bonded to the battery cell 11.
[0055] In summary, the device for setting blocking parts for photovoltaic modules provided by this utility model embodiment can achieve the setting of blocking parts between battery strings, so that the cells in adjacent battery strings will not be connected due to displacement, thus avoiding the short circuit problem between adjacent battery strings. Furthermore, the blocking parts fixed to the battery strings increase the friction between the cells in adjacent battery strings, reducing the relative displacement between battery strings.
[0056] Example 1
[0057] A method for manufacturing a photovoltaic module, comprising:
[0058] Step a: Place the battery string, which is made up of multiple battery cells welded together, on the battery string placement platform;
[0059] Step b: Heat one side of the battery string surface using a heating component;
[0060] Step c: Using the device for setting a barrier for photovoltaic modules, a barrier is fixed on one side edge of the cell string; wherein the material of the barrier is EVA material;
[0061] Step d involves stacking the backsheet, back film, multiple parallel battery strings, front film, and cover plate, and then laminating them once to obtain the photovoltaic module.
[0062] Example 2
[0063] A method for manufacturing a photovoltaic module, comprising:
[0064] Step a: Place the battery string, which is made up of multiple battery cells welded together, on the battery string placement platform;
[0065] Step b: Heat one side of the battery string surface using a heating component;
[0066] Step c: Using the device for setting obstructions for photovoltaic modules, a blocking part is fixed on each of the two edges of the cell string; wherein, the material of the blocking part is EVA material;
[0067] Step d involves stacking the backsheet, back film, multiple parallel battery strings, front film, and cover plate, and then laminating them once to obtain a photovoltaic module.
[0068] Example 3
[0069] A method for manufacturing a photovoltaic module, comprising:
[0070] Step a: Place the battery string, which is made up of multiple battery cells welded together, on the battery string placement platform;
[0071] Step b: Heat one side of the battery string surface using a heating component;
[0072] Step c: Using the device for setting obstructions for photovoltaic modules, fix two obstructions on one side edge of the cell string; wherein, the material of the obstructions is EVA material;
[0073] Step d involves stacking the backsheet, back film, multiple parallel battery strings, front film, and cover plate, and then laminating them once to obtain the photovoltaic module.
[0074] Example 4
[0075] A method for manufacturing a photovoltaic module, comprising:
[0076] Step a: Place the battery string, which is made up of multiple battery cells welded together, on the battery string placement platform;
[0077] Step b: Using the device for setting obstructions for photovoltaic modules, a blocking part is fixed on one side edge of the cell string; wherein, the material of the blocking part is an adhesive silicone strip;
[0078] Step d involves stacking the backsheet, back film, multiple parallel battery strings, front film, and cover plate, and then laminating them once to obtain the photovoltaic module.
[0079] The above steps are provided only to help understand the structure, method, and core idea of this utility model. For those skilled in the art, various improvements and modifications can be made to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.
Claims
1. A device for setting a blocking part for a photovoltaic module, characterized in that, The photovoltaic module to which the device is directed comprises, from bottom to top, a back sheet (100), a back adhesive film (200), a cell array (300), a front adhesive film (400), and (500); wherein the cell array (300) comprises a plurality of parallelly arranged cell strings (1); at least one blocking part (2) is arranged between every two adjacent cell strings (1); the blocking part (2) is fixed to one of the cell strings (1) adjacent thereto; the device comprises a cell string placement table (4) for placing the cell strings (1) and an operating handle (5) arranged on the side of the cell string placement table (4); wherein the operating handle (5) comprises an operating arm (51) and an operating head (52), and the operating head (52) is in rotary movable connection with the operating arm (51); a vacuum suction hole (53) for suction of the blocking part (2) is arranged on the operating head (52); the operating arm (51) is used to drive the operating head (52) to suction the blocking part (2) through the vacuum suction hole (53) and fix the blocking part (2) to at least one side of the cell string (1), so as to prepare the photovoltaic module by using the cell string (1) with the fixed blocking part (2).
2. The device according to claim 1, wherein a U-shaped groove (54) is further arranged on the operating head (52); the vacuum suction hole (53) is distributed on both sides of the U-shaped groove (54); the operating arm (51) further drives the operating head (52) to drive the U-shaped groove (54) to be embedded in the edge of a cell piece (11) of the cell string (1), and make the blocking part (2) suctioned by the vacuum suction hole (53) follow the edge of the cell piece (11) into the U-shaped groove (54) to form a U-shaped structure embedded in the edge of the cell piece (11).
3. The apparatus of claim 1 or 2, wherein, Further comprising: a heating assembly (6) arranged above the cell string placement table (4); the heating assembly (6) is used to heat the cell piece (11) so as to make the blocking part (2) be fixed to the cell piece (11).
4. The device according to claim 1 or 2, wherein the number of the blocking parts (2) arranged by the device for the photovoltaic module is not less than the number of the cell pieces (11) contained in the cell string (1); each blocking part (2) is fixed to one of the cell pieces (11) in one of the cell strings (1) adjacent thereto.
5. The device according to claim 4, wherein in the case that the number of the blocking parts (2) arranged by the device for the photovoltaic module is the same as the number of the cell pieces (11) contained in the cell string (1), one blocking part (2) is arranged between the two opposite cell pieces (11) in the two adjacent cell strings (1).
6. The device according to claim 4, wherein the blocking part (2) is fixed to both of the two opposite cell pieces (11) in the two adjacent cell strings (1).
7. The apparatus of any one of claims 1, 2, 5, and 6, wherein, The blocking part (2) provided for the photovoltaic module is in a U-shaped structure, The U-shaped structure is embedded in the edge of the cell piece (11).
8. The device according to any one of claims 1, 2, 5 and 6, wherein, The thickness of the blocking part (2) is 0.1mm-0.7mm; And / or, The inter-string spacing between the two adjacent cell strings (1) included in the cell array is 0.1mm-1.4mm.
9. The device according to any one of claims 1, 2, 5 and 6, wherein, The device further comprises a plurality of limiting parts (3) between each two adjacent cell strings (1) in the photovoltaic module, wherein, Each limiting part (3) is fixed on the two opposite cell pieces (11) of the two adjacent cell strings (1).