A photovoltaic module

Abstract

The present application relates to a photovoltaic module, including a plurality of battery strings, which are arranged at intervals along the width direction of the photovoltaic module, and the battery strings include a plurality of battery cells, which are used to convert sunlight into electrical energy. The greater the proportion of battery cells in the photovoltaic module, the higher its power generation efficiency. However, sunlight cannot pass through the position where the battery cells are arranged in the module, and can only pass through the gaps between the battery cells. The spacing between adjacent battery strings is 110mm to 200mm, and the area of ​​the battery cells accounts for 30% to 39% of the overall area of ​​the photovoltaic module, which can balance the power generation efficiency and light transmission effect of the photovoltaic module. When the photovoltaic module is installed on the top and / or facade of the building, the photovoltaic module has a greater power generation efficiency, and at the same time, it can also provide a better lighting effect in the building.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic module. Background Art

[0002] Photovoltaic building integration combines photovoltaic modules with buildings, allowing photovoltaic modules to replace traditional building materials such as glass curtain walls, exterior wall decorative stones, and roof tiles. While meeting the basic functional requirements of the building, it can convert solar energy into electrical energy, providing green, environmentally friendly, and clean electricity for electrical loads. Photovoltaic modules include multiple cells that absorb sunlight and convert it into electrical energy. When photovoltaic modules replace the glass curtain walls of buildings, sunlight cannot pass through the cells, which will affect the lighting of the building and make the interior of the building darker. Utility Model Content

[0003] The present application provides a photovoltaic module for solving the problem that when the photovoltaic module replaces the glass curtain wall of a building, the lighting of the building is affected and the interior of the building is dark.

[0004] The present application provides a photovoltaic assembly, the photovoltaic assembly comprising:

[0005] A plurality of battery strings, wherein the plurality of battery strings are spaced apart along the width direction of the photovoltaic module, and the spacing between adjacent battery strings is 110 mm to 200 mm;

[0006] The battery string includes a plurality of battery cells, and the area of ​​the plurality of battery cells accounts for 30% to 39% of the area of ​​the photovoltaic module.

[0007] In a possible implementation, the plurality of solar cells are spaced apart along the length direction of the photovoltaic module, and the spacing between adjacent solar cells is -1 mm to 0.9 mm.

[0008] In a possible implementation manner, when the photovoltaic assembly includes four groups of battery strings, the spacing between adjacent battery strings is 150 mm to 200 mm.

[0009] In a possible implementation manner, when the photovoltaic assembly includes six groups of battery strings, the spacing between adjacent battery strings is 110 mm to 150 mm.

[0010] In a possible implementation, light-transmitting plates are provided on both sides of the cell along the thickness direction of the photovoltaic module.

[0011] In a possible implementation, along the width direction of the photovoltaic module, the spacing between the cell and the edge of the light-transmitting plate is 11.25 mm to 15.25 mm.

[0012] In a possible implementation, along the length direction of the photovoltaic module, the spacing between the cell and the edge of the light-transmitting plate is 19.5 mm to 23.5 mm.

[0013] In a possible implementation, the cell is any one of a passivated emitter back contact cell, a tunneling oxide passivated contact cell, a heterojunction cell, a back contact cell, and a perovskite cell.

[0014] In a possible implementation, the battery cell includes a plurality of main grids, which are arranged at intervals along the length or width direction of the battery cell, and the number of the main grids is 10 to 24; or the battery cell is a bus-grid-free structure.

[0015] In a possible implementation, the photovoltaic module is installed on the top or facade of a building.

[0016] The embodiment of the present application relates to a photovoltaic module, including a plurality of battery strings, which are arranged at intervals along the width direction of the photovoltaic module, and the battery strings include a plurality of battery cells for converting sunlight into electrical energy. The greater the proportion of battery cells in the photovoltaic module, the higher its power generation efficiency. However, sunlight cannot pass through the position where the battery cells are arranged in the module, and can only pass through the gaps between the battery cells. The spacing between adjacent battery strings is 110mm to 200mm, and the area of ​​the battery cells accounts for 30% to 39% of the overall area of ​​the photovoltaic module, which can balance the power generation efficiency and light transmission effect of the photovoltaic module. When the photovoltaic module is installed on the top and / or facade of the building, the photovoltaic module has a greater power generation efficiency, and at the same time, it can also provide a better lighting effect in the building.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a photovoltaic module in an embodiment of the present application;

[0019] Figure 2 for Figure 1 A partial enlarged view of the middle I position;

[0020] Figure 3 for Figure 1 Sectional view in the AA direction;

[0021] Figure 4 This is a cross-sectional view of another embodiment of a photovoltaic assembly in the embodiments of the present application.

[0022] Reference numerals:

[0023] 1- Battery string;

[0024] 11-battery cell;

[0025] 2-Light-transmitting plate.

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0027] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0028] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0029] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0030] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0031] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0032] The embodiment of the present application provides a photovoltaic module, which is installed on the top or facade of a building, and can convert sunlight irradiating the building into electrical energy to power the equipment in the building. The photovoltaic module includes a cell 11, which is used to absorb sunlight and convert it into electrical energy. The present application does not limit the structure of the cell 11. The types of cells 11 include but are not limited to passivated emitter rear contact cells (Passivated Emitter Rear Cell, PERC), tunnel oxide passivated contact cells (Tunnel Oxide Passivated Contact, TOPCon), heterojunction cells (Heterojunction with Intrinsic Thin-film, HJT), back contact cells (Back Contact Cell, BC), perovskite cells, etc.

[0033] For PERC cells, along the thickness direction, PERC cells include front surface metal silver electrode, front surface silicon nitride passivation layer, phosphorus layer emitter, P-type base silicon layer, local aluminum back field, metal aluminum back electrode, back passivation layer (Al2O3 / SiNx). PERC cells use a passivation film to passivate the back, replacing the full aluminum back field, enhancing the internal back reflection of light in the silicon base, reducing the recombination rate on the back, and increasing the efficiency of the cell by 0.5%-1%.

[0034] For TOPCon cells, along the thickness direction, TOPCon cells include metal silver electrodes, front surface silicon nitride passivation layers, boron-doped emitters, N-type base silicon layers, diffused doping layers, ultra-thin silicon oxide, doped polysilicon, silicon nitride, and metal silver electrodes. The back of the cell is composed of a layer of ultra-thin silicon oxide (1nm to 2nm) and a layer of phosphorus-doped microcrystalline amorphous mixed Si film, which together form a passivation contact structure. This structure can block the recombination of minority carrier holes and increase the open circuit voltage and short circuit current of the cell. The ultra-thin oxide layer allows majority electrons to tunnel into the polysilicon layer while blocking the recombination of minority carrier holes. The good passivation effect of ultra-thin silicon oxide and heavily doped silicon film causes the energy band on the silicon wafer surface to bend, thereby forming a field passivation effect, greatly increasing the probability of electron tunneling, reducing contact resistance, and increasing the open circuit voltage and short circuit current of the cell, thereby improving the cell conversion efficiency.

[0035] For HJT cells, along the thickness direction, the HJT cells include a front low-temperature silver electrode, a front conductive film, an N-type amorphous silicon film, an intrinsic amorphous silicon film, an N-type base silicon layer, an intrinsic amorphous silicon film, a P-type amorphous silicon film, a back conductive film, and a back low-temperature silver electrode.

[0036] Back contact cells include MWT, EWT and IBC cells. The conversion efficiency of MWT and EWT cells is subject to certain limitations, while the theoretical conversion efficiency of IBC cells is higher. For IBC cells, along the thickness direction, IBC cells include silicon nitride anti-layer, N+ front surface field, N-type base silicon layer, P+ emitter, N+ back field, aluminum oxide passivation layer, silicon nitride anti-reflection layer, and metal silver electrode. IBC cells use ion implantation technology to obtain P and N regions with good uniformity and precisely controllable junction depth. There is no grid line blocking on the front of the cell, which can eliminate the shading current loss of the metal electrode and realize the maximum utilization of incident photons. The short-circuit current can be increased by about 7% compared with conventional solar cells. Due to the back contact structure, there is no need to consider the grid line blocking problem, and the grid line ratio can be appropriately widened, thereby reducing the series resistance and having a high fill factor. The surface passivation and surface light trapping structure can be optimized to obtain a lower front surface recombination rate and surface reflection.

[0037] For perovskite cells, along the thickness direction, the perovskite cell includes substrate material, conductive film, electron transport layer (titanium dioxide), perovskite absorption layer (hole transport layer), and metal cathode. Perovskite materials have a high light absorption coefficient and a long carrier diffusion distance. After the photons absorbed by the perovskite material are converted into electrons, they are easily collected by the electrode with low loss, so they can generate higher photoelectric voltage and current, making perovskite show higher photoelectric conversion efficiency.

[0038] In a possible embodiment, the battery cell 11 includes 10 to 24 main grids, and the 10 to 24 main grids are arranged at intervals along the length or width direction of the battery cell 11 .

[0039] The main grid can be an aluminum wire or a silver wire, which forms an electron flow by contacting the N-type and P-type silicon crystals on the cell 11, and converts light energy into electrical energy. The main grid in the cell 11 will block the cell 11. If the number of main grids in the cell 11 is greater than 24, the loss on the cell 11 will be greater. If the number of main grids in the cell 11 is less than 10, the conversion efficiency of the cell 11 will be lower, and the output electrical energy will be less. Therefore, the number of main grids on the cell 11 can be 10, 15, 20, 24, etc., which can reduce the loss of the cell 11 while ensuring the conversion efficiency of the cell 11.

[0040] In a possible embodiment, the battery cell 11 may also be a busbar-free structure.

[0041] The battery cell 11 has a busbar-free structure, which allows more active materials to be loaded into the battery cell 11, thereby increasing the energy density. Compared with the battery cell 11 with a busbar, the busbar-free battery cell 11 does not have the problem of busbar corrosion, and the electrolyte mixture can also flow freely, allowing the charge to be output smoothly, thereby extending the battery life. The grid wires for collecting current in the busbar-free battery cell 11 are replaced with copper wires, so the amount of silver paste used in the battery can be reduced by 80%, and the copper wires used are round, which can effectively reduce the shading area by 25-30%, increase the light capture effect of the battery cell 11, and thereby improve the conversion efficiency of the battery cell 11.

[0042] like Figure 1 and Figure 2 As shown, the photovoltaic module includes a plurality of battery strings 1. The plurality of battery strings 1 are arranged at intervals along the width direction X of the photovoltaic module, and the spacing d1 between adjacent battery strings 1 is 110 mm to 200 mm. Each group of battery strings 1 includes a plurality of battery cells 11 for converting solar energy into electrical energy, and the area of ​​the plurality of battery cells 11 in the plurality of battery strings 1 accounts for 30% to 39% of the area of ​​the photovoltaic module.

[0043] The cells 11 in the photovoltaic module need to absorb sunlight and convert it into electrical energy. The greater the proportion of cells 11 in the photovoltaic module, the higher its power generation efficiency. However, sunlight cannot pass through the position where the cells 11 are set in the module, and can only be emitted into the building through the gaps between the cells 11. Multiple cells 11 are arranged along the length direction Y of the photovoltaic module and welded into a cell string 1. If the spacing between adjacent cell strings 1 is less than 110mm, the area of ​​the interior of the building that can be taken in by sunlight is small, which reduces the lighting effect inside the building, and requires the lighting device to be turned on for a long time in the building, which causes energy waste, and also increases the humidity in the building, which is easy to accelerate the reproduction of microorganisms, and then causes hygiene problems in the building. If the spacing between adjacent cell strings 1 is greater than 200mm, the area of ​​the cells 11 used to convert solar energy into electrical energy in the photovoltaic module will be smaller, which will reduce the power generation efficiency of the photovoltaic module. In order to balance the power generation efficiency of the photovoltaic module and the lighting effect in the building, the spacing d1 between adjacent battery strings 1 can be 110mm, 150mm, 200mm, etc., preferably 150mm, so that the photovoltaic module has a higher power generation efficiency and can also provide a better lighting effect in the building.

[0044] The greater the proportion of the battery cell 11 in the photovoltaic module, the worse its light transmission effect. The photovoltaic module provided in the embodiment of the present application is installed on the top surface or facade of the building, and the light transmission effect of the module will affect the lighting effect inside the building. If the proportion of the battery cell 11 in the photovoltaic module is greater than 39%, the power generation efficiency of the photovoltaic module can be increased, but the light transmission effect of the photovoltaic module is poor, which leads to poor lighting effect inside the building. If the proportion of the battery cell 11 in the photovoltaic module is less than 30%, the lighting effect inside the building is improved, but the power generation efficiency of the photovoltaic module is low. In order to balance the power generation efficiency of the photovoltaic module and the lighting effect inside the building, the proportion of the battery cell 11 in the photovoltaic module can be 30%, 35%, 39%, etc., preferably 35%, so that the photovoltaic module has a greater power generation efficiency and can also provide a better lighting effect inside the building.

[0045] like Figures 2 to 4 As shown, in a possible embodiment, along the length direction Y of the photovoltaic module, a plurality of cells 11 are arranged at intervals, and there may be gaps between adjacent cells 11, so that adjacent cells 11 are connected by welding strips, and adjacent cells 11 overlap, and welding strips are arranged at the overlapping positions to weld two adjacent cells 11. Therefore, the spacing d2 between adjacent cells 11 is -1mm to 0.9mm.

[0046] There are overlapping positions between adjacent cells 11, so that the spacing between adjacent cells 11 is a negative value, which can improve the compactness of the arrangement between adjacent cells 11, thereby improving the power generation efficiency of the battery string 1. If the spacing between adjacent battery strings 1 is less than -1mm, the overlapping area between adjacent cells 11 is large, and the cells 11 will block each other, resulting in a low utilization rate of the cells 11, thereby reducing the power generation efficiency of the photovoltaic module. The spacing between the cells 11 can also be a positive value, which can reduce the possibility of the cells 11 blocking each other, thereby increasing the power generation of a single cell 11. If the spacing between adjacent cells 11 is greater than 0.9mm, the spacing between adjacent cells 11 is large, which will reduce the number of cells 11 in the battery string 1, reduce the power generation efficiency of the battery string 1, and thereby reduce the power generation efficiency of the entire photovoltaic module. Therefore, the spacing d2 between adjacent cells 11 can be -1mm, 0mm, 0.9mm, etc., preferably 0mm, which can improve the power generation efficiency of the battery string 1, thereby improving the power generation efficiency of the photovoltaic module.

[0047] Along the thickness direction Z of the photovoltaic module, fixing plates are provided on both sides of the cell 11 to reduce the influence of the external environment on the cell 11 in the photovoltaic module. In a possible embodiment, the fixing plates on both sides of the cell 11 are light-transmitting plates 2, and sunlight can pass through the light-transmitting plates 2 to enter the cell 11 and the interior of the building.

[0048] The light-transmitting plate 2 can be photovoltaic glass, so that the photovoltaic module is a double-glass module. The light transmittance of the photovoltaic glass facilitates the intake of sunlight into the battery cell 11 and the interior of the building, which can further improve the power generation efficiency of the photovoltaic module and the lighting effect in the building. At the same time, the high mechanical strength of the photovoltaic glass can reduce the possibility of the battery cell 11 being affected by the external environment.

[0049] A frame is arranged around the photovoltaic module for mounting the photovoltaic module on the top or facade of a building. After the frame is mounted on the photovoltaic module, there is an overlap between the frame and the edge of the light-transmitting plate 2 in the photovoltaic module, and there is a gap between the cell 11 and the edge of the photovoltaic module so that the frame can avoid the position of the cell 11.

[0050] like Figure 2 As shown, in a possible embodiment, along the width direction X of the photovoltaic module, the spacing d3 between the cell 11 and the edge of the photovoltaic module is 11.25 mm to 15.25 mm.

[0051] If the spacing d3 between the cell 11 and the edge of the photovoltaic module is less than 11.25 mm, the frame may block the cell 11 in the photovoltaic module, thereby reducing the power generation efficiency of the cell 11 located at the edge. Since the size of the photovoltaic modules is consistent, if the spacing d3 between the cell 11 and the edge of the photovoltaic module is greater than 15.25 mm, the spacing between adjacent cell strings 1 in the photovoltaic module will be reduced, thereby reducing the area of ​​sunlight passing through the photovoltaic module to enter the interior of the building, reducing the lighting effect inside the building. Therefore, along the width direction X of the photovoltaic module, the spacing d3 between the cell 11 and the edge of the photovoltaic module can be 11.25 mm, 13.25 mm, 15.25 mm, etc., preferably 13.25 mm, which can not only ensure the spacing between adjacent cell strings 1 and improve the lighting effect inside the building, but also reduce the possibility of the frame blocking the cell 11, which is beneficial to improving the power generation efficiency of the photovoltaic module.

[0052] like Figure 2 As shown, in a possible embodiment, along the length direction Y of the photovoltaic module, the distance d4 between the cell 11 and the edge of the light-transmitting plate 2 is 19.5 mm to 23.5 mm.

[0053] If the spacing d4 between the cell 11 and the edge of the photovoltaic module is less than 19.5 mm, the frame may block the cell 11 at both ends of the battery string 1, thereby reducing the power generation efficiency of the cell 11 at both ends. Since the size of the photovoltaic modules is consistent, if the spacing d4 between the cell 11 and the edge of the photovoltaic module is greater than 23.5 mm, the spacing between adjacent cells 11 will be reduced, affecting the sunlight entering the building from between adjacent cells 11, affecting the lighting effect inside the building, or increasing the overlapping size between adjacent cells 11, reducing the power generation efficiency of the photovoltaic module. Therefore, along the length direction Y of the photovoltaic module, the spacing d4 between the cell 11 and the edge of the photovoltaic module can be 19.5 mm, 21.5 mm, 23.5 mm, etc., preferably 21.5 mm, which can not only reduce the possibility of the frame blocking the cell 11, but also improve the power generation efficiency of the photovoltaic module and the lighting effect inside the building.

[0054] A photovoltaic module may include multiple groups of battery strings 1. Typically, the length of the photovoltaic module is 2271 mm to 2278 mm, and the width is 1127 mm to 1134 mm. The battery strings 1 are arranged at intervals along the width direction X of the photovoltaic module. Therefore, the more battery strings 1 there are in the photovoltaic module, the smaller the spacing between adjacent battery strings 1, and the greater the power generation efficiency of the corresponding photovoltaic module.

[0055] In a possible embodiment, the photovoltaic module includes four groups of battery strings 1, and the four groups of battery strings 1 are arranged at intervals along the width direction X of the photovoltaic module, and the spacing between adjacent battery strings 1 is 150 mm to 200 mm.

[0056] If the spacing between adjacent battery strings 1 is less than 150mm, the area of ​​sunlight entering the building through the battery strings 1 is small, resulting in poor lighting effect inside the building. If the spacing between adjacent battery strings 1 is greater than 200mm, the battery cells 11 in the battery strings 1 at both ends of the photovoltaic module in the width direction X are easily blocked by the frame, resulting in reduced power generation efficiency of the photovoltaic module. Therefore, the spacing between adjacent battery strings 1 can be 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, etc., preferably 180mm, which can improve the power generation efficiency of the photovoltaic module, and when the photovoltaic module is installed on the top and / or facade of the building, it can also improve the lighting effect inside the building.

[0057] In a possible embodiment, the photovoltaic module includes six groups of battery strings 1, and the six groups of battery strings 1 are arranged at intervals along the width direction X of the photovoltaic module, and the spacing between adjacent battery strings 1 is 110 mm to 150 mm.

[0058] In order to increase the power generation of the photovoltaic module, the number of battery strings 1 in the photovoltaic module can be increased. When the width of the photovoltaic module is constant, the spacing between adjacent battery strings 1 needs to be reduced. If the spacing between adjacent battery strings 1 is less than 110mm, the area of ​​sunlight passing through the battery strings 1 to enter the interior of the building is small, resulting in poor lighting effect inside the building. If the spacing between adjacent battery strings 1 is greater than 150mm, the battery cells 11 in the battery strings 1 at both ends of the photovoltaic module in the width direction X are easily blocked by the frame, resulting in a decrease in the power generation efficiency of the photovoltaic module. Therefore, the spacing between adjacent battery strings 1 can be 110mm, 120mm, 130mm, 140mm, 150mm, etc., preferably 130mm, which can improve the power generation efficiency of the photovoltaic module. When the photovoltaic module is installed on the top and / or facade of the building, it can also improve the lighting effect inside the building.

[0059] The embodiment of the present application relates to a photovoltaic module, including a plurality of battery strings 1. Along the width direction X of the photovoltaic module, the plurality of battery strings 1 are arranged at intervals. The battery string 1 includes a plurality of battery cells 11, which are used to convert sunlight into electrical energy. The greater the proportion of battery cells 11 in the photovoltaic module, the higher its power generation efficiency. However, sunlight cannot pass through the position where the battery cells 11 are arranged in the module, and can only pass through the gaps between the battery cells 11. The spacing between adjacent battery strings 1 is 110mm to 200mm, and the area of ​​the battery cells 11 accounts for 30% to 39% of the overall area of ​​the photovoltaic module, which can balance the power generation efficiency and light transmission effect of the photovoltaic module. When the photovoltaic module is installed on the top and / or facade of the building, the photovoltaic module has a greater power generation efficiency, and at the same time, it can also provide a better lighting effect in the building.

[0060] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A photovoltaic module, characterized in that: The photovoltaic module comprises: A plurality of battery strings (1), wherein the plurality of battery strings (1) are arranged at intervals along the width direction of the photovoltaic module, and the spacing between adjacent battery strings (1) is 110 mm to 200 mm; The battery string (1) comprises a plurality of battery cells (11), and the area of ​​the plurality of battery cells (11) accounts for 30% to 39% of the area of ​​the photovoltaic module.

2. The photovoltaic module according to claim 1, characterized in that: The plurality of battery sheets (11) are arranged at intervals along the length direction of the photovoltaic module, and the spacing between adjacent battery sheets (11) is -1 mm to 0.9 mm.

3. The photovoltaic module according to claim 1, characterized in that: When the photovoltaic assembly comprises four groups of battery strings (1), the spacing between adjacent battery strings (1) is 150 mm to 200 mm.

4. The photovoltaic module according to claim 1, characterized in that: When the photovoltaic assembly comprises six groups of battery strings (1), the spacing between adjacent battery strings (1) is 110 mm to 150 mm.

5. The photovoltaic module according to claim 1, characterized in that: Along the thickness direction of the photovoltaic module, light-transmitting plates (2) are provided on both sides of the cell sheet (11).

6. The photovoltaic module according to claim 5, characterized in that: Along the width direction of the photovoltaic module, the spacing between the cell sheet (11) and the edge of the light-transmitting plate (2) is 11.25 mm to 15.25 mm.

7. The photovoltaic module according to claim 6, characterized in that: Along the length direction of the photovoltaic module, the distance between the cell sheet (11) and the edge of the light-transmitting plate (2) is 19.5 mm to 23.5 mm.

8. The photovoltaic module according to claim 1, characterized in that: The cell (11) is any one of a passivated emitter back contact cell, a tunneling oxidation passivated contact cell, a heterojunction cell, a back contact cell, and a perovskite cell.

9. The photovoltaic module according to claim 1, characterized in that: The battery cell (11) comprises a plurality of main grids, which are arranged at intervals along the length or width direction of the battery cell (11), and the number of the main grids is 10 to 24; or the battery cell (11) is a structure without a main grid.

10. The photovoltaic module according to any one of claims 1 to 9, characterized in that: The photovoltaic module is installed on the top or facade of the building.

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