Solar cell module

Abstract

The utility model relates to photovoltaic module technical field discloses a solar cell module, include: the front plate glass, perovskite cell piece, crystalline silicon cell piece and back plate glass that set up in turn laminated, be equipped with the first adhesive film layer between perovskite cell piece and crystalline silicon cell piece, and crystalline silicon cell piece is fixed between the first adhesive film layer and back plate glass through the second adhesive film layer, along the thickness direction of solar cell module, the orthographic projection of crystalline silicon cell piece towards perovskite cell piece falls into the orthographic projection range of perovskite cell piece, solar cell module still includes the isolation zone, and at least partial isolation zone is located between the first adhesive film layer and perovskite cell piece and surrounds setting at the four perimeter edges of perovskite cell piece, with the aid of isolation zone, can block the connection of perovskite cell piece edge and the first adhesive film layer, and therefore, when adhesive film layer solidification shrinks or is cold contraction, adhesive film layer will not produce the pulling force that causes perovskite cell piece edge blister and delamination.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, specifically to a solar cell module. Background Technology

[0002] Solar cell modules generally include perovskite solar cell modules, crystalline silicon solar cell modules, and tandem solar cell modules. Among them, tandem solar cell modules are mainly "crystalline silicon-perovskite tandem solar cell modules," which utilize the spectral response characteristics of the two materials by stacking crystalline silicon cells and perovskite cells in a specific structure. Crystalline silicon cells can fully absorb and utilize long-wavelength light, while perovskite cells can efficiently absorb short-wavelength light. The synergistic efficiency of the two is high, thus enabling the solar cell module to have better photoelectric conversion efficiency.

[0003] However, in crystalline silicon-perovskite tandem solar cell modules, the area of ​​the perovskite cell is larger than that of the crystalline silicon cell. However, since the crystalline silicon cell and the perovskite cell cannot be perfectly aligned, and the crystalline silicon cell and the perovskite cell are fixedly connected by an encapsulating film, the edges of the perovskite film are prone to delamination due to uneven stress when the encapsulating film cures and shrinks or shrinks due to cold. Utility Model Content

[0004] In view of this, the present invention provides a solar cell module to solve the problem that in crystalline silicon-perovskite tandem solar cell modules, the perovskite cells are prone to delamination in the edge areas due to uneven stress distribution around the perimeter.

[0005] This utility model provides a solar cell module, comprising: a front glass panel, a perovskite solar cell, a crystalline silicon solar cell, and a back glass panel stacked sequentially. A first adhesive film layer is provided between the perovskite solar cell and the crystalline silicon solar cell, and the crystalline silicon solar cell is fixed between the first adhesive film layer and the back glass panel by a second adhesive film layer. Along the thickness direction of the solar cell module, the orthographic projection of the crystalline silicon solar cell toward the perovskite solar cell falls within the orthographic projection range of the perovskite solar cell. The solar cell module also includes an insulating strip, at least a portion of which is located between the first adhesive film layer and the perovskite solar cell and surrounds the edge of the perovskite solar cell.

[0006] Beneficial effects: This utility model places the insulating strip between the first adhesive film layer and the perovskite solar cell, and simultaneously surrounds the edge of the perovskite solar cell. This can block the connection between the edge of the perovskite solar cell and the first adhesive film layer. Therefore, when the first and second adhesive film layers cure and shrink or shrink due to cold, the first and second adhesive film layers will not generate the tensile force that would cause blistering and delamination at the edge of the perovskite solar cell. This ensures the structural integrity of the perovskite solar cell, thereby improving the operational reliability and power generation efficiency stability of the entire solar cell module and extending the service life of the entire solar cell module.

[0007] In one alternative embodiment, the front glass panel includes a clearing region surrounding the periphery of the perovskite solar cell, and the outer periphery of the insulating strip extends onto the clearing region.

[0008] Beneficial effects: The insulating strip spans across and covers the edge of the perovskite sheet, which can prevent the first adhesive film layer from contacting the side edge of the perovskite solar cell, and further eliminate the pulling and delamination of the perovskite solar cell by the shrinkage stress of the first adhesive film layer and / or the second adhesive film layer.

[0009] In one alternative embodiment, along the thickness direction of the solar cell module, at least a portion of the insulating strip's orthogonal projection toward the crystalline silicon cell falls within the orthogonal projection range of the crystalline silicon cell; or, in the width direction of the insulating strip, the crystalline silicon cell is adjacent to or spaced from the insulating strip.

[0010] Beneficial Effects: Since the periphery of the crystalline silicon solar cell is covered by the second adhesive film layer, this area experiences greater shrinkage stress on the first adhesive film layer. This makes the perovskite solar cell susceptible to the transmission of this shrinkage stress, leading to delamination and consequently, a decrease in photoelectric conversion efficiency and a shortened lifespan. Therefore, this invention ensures that at least a portion of the insulating strip's orthogonal projection falls within the crystalline silicon solar cell's area, or that the crystalline silicon solar cell is adjacent to / spaced from the insulating strip. This effectively blocks the connection between the perovskite solar cell and the first adhesive film layer in this area, thereby preventing or buffering the transmission of shrinkage stress from the first adhesive film layer to the perovskite solar cell and avoiding stress concentration that could damage the integrity of the perovskite solar cell.

[0011] In one alternative embodiment, the isolation strip further has one or more of the following features (a) to (b): (i) Along the thickness direction of the solar cell module, the thickness of the insulating strip is 10µm to 50µm; (ii) The isolation strip is made of a light-transmitting material; (iii) The material of the isolation strip is one of polyethylene terephthalate, ethylene-tetrafluoroethylene copolymer, polytetrafluoroethylene, and polyvinylidene fluoride; (iv) The width of the isolation strip is 1cm to 20cm.

[0012] Beneficial Effects: This invention controls the thickness of the insulating strip between 10µm and 50µm. On the one hand, it solves the negative impact of the first and / or second adhesive film layers on the perovskite solar cell (even if the perovskite solar cell is demolded). On the other hand, it prevents the busbars on the crystalline silicon solar cell from puncturing the first adhesive film layer and contacting the back electrode on the perovskite solar cell during lamination. Using a transparent material as the insulating strip reduces the obstruction of incident light, preventing a reduction in the light-receiving area of ​​the solar cell module due to the presence of the insulating strip, thus ensuring that the photoelectric conversion efficiency of both the perovskite and crystalline silicon solar cells is not affected. The choice of materials such as polyethylene terephthalate, ethylene-tetrafluoroethylene copolymer, polytetrafluoroethylene, and polyvinylidene fluoride as the insulating strip is not only because they have good weather resistance, high temperature resistance, and mechanical strength, making them suitable for long-term outdoor use of solar cell modules, but also because they can directly contact the back electrode on the perovskite solar cell without chemical reaction or physical compatibility issues. Limiting the width of the isolation strip to between 1cm and 20cm ensures that the isolation strip can fully cover the stress concentration area and isolate the first encapsulant layer from the perovskite solar cell, while also avoiding material waste or encroachment on the internal space of the module due to excessive width.

[0013] In one optional embodiment, the melting point of the second adhesive film layer is not lower than the melting point of the first adhesive film layer; And / or, the melt index of the second adhesive film layer is not greater than the melt index of the first adhesive film layer.

[0014] Beneficial effects: If the melting point of the second adhesive film layer is lower than that of the first adhesive film layer, the second adhesive film layer will soften to a certain extent when high temperatures occur during use. This significantly reduces the fixing effect of the second adhesive film layer on the crystalline silicon solar cells, leading to slippage and misalignment of the crystalline silicon solar cells. This invention uses a second adhesive film layer with a melting point not lower than that of the first adhesive film layer, which improves the high-temperature creep resistance of the second adhesive film layer, ensuring that it can provide reliable support and fixation for the crystalline silicon solar cells during use, and suppressing slippage or misalignment of the cell string.

[0015] The melt index of the second encapsulant layer is no greater than that of the first encapsulant layer. When used in a high-temperature environment, the creep degree of the second encapsulant layer after softening is lower than that of the first encapsulant layer, so that the crystalline silicon solar cell can still be relatively stably fixed on the backsheet glass, thus improving the stability of the solar cell module.

[0016] In one optional embodiment, the material of the second adhesive film layer is a polyolefin elastomer or an ethylene-vinyl acetate copolymer; And / or, the melting point temperature range of the second adhesive film layer is 110°C to 125°C; And / or, the melt index of the second film layer is 5 g / 10 min to 20 g / 10 min.

[0017] Beneficial effects: This invention uses polyolefin elastomer or ethylene-vinyl acetate copolymer as the second adhesive film layer, which enables the second adhesive film layer to have excellent adhesion and weather resistance, thus ensuring stable bonding of crystalline silicon solar cells and other structures of the solar cell module, while also adapting to long-term outdoor use environments and reducing the risk of aging failure. Controlling the melting point of the second adhesive film layer between 110℃ and 125℃ not only meets the requirements of high-temperature encapsulation of perovskite solar cells, but also improves the creep resistance of the solar cell module. The melt index of 5g / 10min to 20g / 10min balances the fluidity and structural stability of the adhesive film. Specifically, it avoids insufficient fluidity and inadequate bonding due to a low melt index, and also prevents excessive flow of the adhesive film and cell string slippage due to a high melt index, ultimately ensuring the encapsulation quality and long-term operational reliability of the solar cell module.

[0018] In one alternative embodiment, the peel force between the second adhesive film layer and the back glass is greater than or equal to 90 N / cm.

[0019] Beneficial effects: This utility model limits the peel force between the second adhesive film layer and the back glass to greater than or equal to 90 N / cm, which can improve the stability of the bond between the two, thereby resisting the stress impact caused by temperature and humidity cycles and alternating hot and cold during long-term outdoor use of solar cell modules, and avoiding problems such as interlayer peeling.

[0020] In one optional embodiment, the first adhesive film layer is made of polyethylene, polyolefin elastomer, ethylene-vinyl acetate copolymer, or foamed polyethylene; and / or, the first adhesive film layer contains nanoscale solid silicon spheres.

[0021] Beneficial effects: This invention uses polyethylene, polyolefin elastomer, ethylene-vinyl acetate copolymer, and foamed polyethylene as the first adhesive film layer. This not only ensures a stable bond between the perovskite solar cell and other structures in the module, but also buffers stress during lamination and use, reducing mechanical damage to the perovskite layer. Furthermore, mixing nanoscale solid silicon spheres within the first adhesive film layer utilizes the nano-effect of the silicon spheres to adjust the refractive index of the first adhesive film layer, increasing light transmittance, enhancing photoelectric conversion efficiency, and improving the power generation of the solar cell module.

[0022] In one optional embodiment, there are multiple crystalline silicon solar cells, which are spaced apart, and the second adhesive film layer is filled between two adjacent crystalline silicon solar cells.

[0023] Beneficial effects: This utility model arranges multiple crystalline silicon solar cells at intervals and fills the gaps between them with a second adhesive layer. On the one hand, the adhesive layer can fix the relative position of each crystalline silicon solar cell through its bonding effect, avoiding cell displacement or collision damage during lamination or use. At the same time, it buffers the stress transmission between adjacent cells and reduces the risk of microcracks caused by differences in thermal expansion and contraction. On the other hand, the second adhesive layer can fill the gaps between the cells, forming a continuous insulating protective layer to prevent short circuits caused by circuit exposure between adjacent cells.

[0024] In one alternative embodiment, the solar cell module further includes an edge seal that connects the front glass and the back glass, and together with the front glass and the back glass, forms a space that protects the perovskite cell, the first encapsulant layer, the crystalline silicon cell, and the second encapsulant layer.

[0025] Beneficial effects: The edge seal, by connecting the front and back glass and forming a closed protective space, can effectively prevent moisture, dust, and corrosive gases from the external environment from entering the module, avoiding performance degradation or structural damage to the perovskite cells, crystalline silicon cells, and two encapsulant layers due to external erosion. On the other hand, it can enhance the connection and sealing between the front and back glass, preventing bubbling and delamination inside the module. At the same time, it can buffer the impact of external forces on the edges of the solar module during transportation, installation, and outdoor use, ensuring the structural stability of the internal core components, and ultimately extending the outdoor lifespan of the entire solar module and maintaining its long-term photoelectric conversion efficiency. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific 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 from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a solar cell module according to an embodiment of the present invention; Figure 2 for Figure 1 The image shows a cross-sectional view of a solar cell module.

[0028] Explanation of reference numerals in the attached figures: 1. Front glass panel; 101. Edge clearing area; 2. Perovskite solar cell; 3. Crystalline silicon solar cell; 4. Back glass panel; 5. First encapsulant layer; 6. Second encapsulant layer; 7. Separator; 8. Edge sealant. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, a solar cell module is provided, such as... Figure 1 and Figure 2 As shown, the solar cell module includes: a front glass panel 1, a perovskite solar cell 2, a crystalline silicon solar cell 3, and a back glass panel 4 stacked sequentially. A first encapsulating film layer 5 is provided between the perovskite solar cell 2 and the crystalline silicon solar cell 3. The crystalline silicon solar cell 3 is fixed between the first encapsulating film layer 5 and the back glass panel 4 by a second encapsulating film layer 6. Along the thickness direction of the solar cell module, the orthographic projection of the crystalline silicon solar cell 3 toward the perovskite solar cell 2 falls within the orthographic projection range of the perovskite solar cell 2. The solar cell module also includes an insulating strip 7, at least a portion of which is located between the first encapsulating film layer 5 and the perovskite solar cell 2 and surrounds the edge of the perovskite solar cell 2.

[0032] In this embodiment of the invention, the insulating strip 7 is disposed between the first adhesive film layer 5 and the perovskite solar cell 2, and the insulating strip 7 is also disposed around the edge of the perovskite solar cell 2. This can block the connection between the edge of the perovskite solar cell 2 and the first adhesive film layer 5. Therefore, when the first adhesive film layer 5 cures and shrinks or shrinks due to cold, the first adhesive film layer 5 will not generate the tensile force that would cause blistering and delamination at the edge of the perovskite solar cell 2, thereby ensuring the structural integrity of the perovskite solar cell 2, thereby improving the operational reliability and power generation efficiency stability of the entire solar cell module, and extending the service life of the entire solar cell module.

[0033] According to one embodiment of the present invention, the front glass panel 1 includes a cleaning region 101 surrounding the periphery of the perovskite solar cell 2, and the outer periphery of the insulating strip 7 extends onto the cleaning region 101. It is understood that the insulating strip 7 spans and covers the edge of the perovskite cell, preventing the first adhesive film layer 5 from contacting the side edge of the perovskite solar cell 2, and further eliminating the pulling and delamination of the perovskite solar cell 2 due to the shrinkage stress of the first adhesive film layer 5 and / or the second adhesive film layer 6.

[0034] According to one embodiment of the present invention, along the thickness direction of the solar cell module, at least a portion of the insulating strip 7 faces the orthogonal projection of the crystalline silicon cell 3, falling within the orthogonal projection range of the crystalline silicon cell 3; or, as... Figure 2 As shown, in the width direction of the separator 7, the crystalline silicon solar cell 3 is adjacent to or spaced from the separator 7. It is understood that since the periphery of the crystalline silicon solar cell 3 is covered by the second encapsulant layer 6, this area experiences greater shrinkage stress on the first encapsulant layer 5. Consequently, the perovskite solar cell 2 is easily affected by the transmission of shrinkage stress from the first encapsulant layer 5, leading to delamination problems, which in turn reduces the photoelectric conversion efficiency and shortens the lifespan of the perovskite solar cell 2. Therefore, this invention ensures that at least a portion of the orthographic projection of the separator 7 falls within the area of ​​the crystalline silicon solar cell 3, or that the crystalline silicon solar cell 3 is adjacent to / spaced from the separator 7. This can block the connection between the perovskite solar cell 2 and the first encapsulant layer 5 in this area, thereby blocking or buffering the transmission of shrinkage stress from the first encapsulant layer 5 to the perovskite solar cell 2, and preventing stress concentration from damaging the integrity of the perovskite solar cell 2.

[0035] According to one embodiment of the present invention, the isolation strip 7 further has one or more of the following features (a) to (b): (i) Along the thickness direction of the solar cell module, the thickness of the insulating strip 7 is 10um to 50um; (ii) The isolation strip 7 is made of light-transmitting material; (iii) The material of the isolation strip 7 is one of polyethylene terephthalate, ethylene-tetrafluoroethylene copolymer, polytetrafluoroethylene, and polyvinylidene fluoride; (iv) The width of the isolation zone 7 is 1cm to 20cm.

[0036] Specifically, in this embodiment, the thickness of the insulating strip 7 is controlled between 10µm and 50µm. This addresses the negative impact of the first adhesive layer 5 and / or the second adhesive layer 6 on the perovskite solar cell 2 (even if the perovskite solar cell 2 is demolded). It also prevents the busbars on the crystalline silicon solar cell 3 from puncturing the first adhesive layer 5 and contacting the back electrode on the perovskite solar cell 2 during lamination. Using a transparent material for the insulating strip 7 reduces the obstruction of incident light, preventing a reduction in the light-receiving area of ​​the solar cell module due to the presence of the insulating strip 7, thus ensuring that the photoelectric conversion efficiency of the perovskite solar cell 2 and the crystalline silicon solar cell 3 remains unaffected. The selection of materials such as polyethylene terephthalate, ethylene-tetrafluoroethylene copolymer, polytetrafluoroethylene, and polyvinylidene fluoride as the insulating strip 7 is not only due to their good weather resistance, high-temperature resistance, and mechanical strength, making them suitable for long-term outdoor use of solar cell modules, but also because they can directly contact the back electrode on the perovskite solar cell 2 without chemical reaction or physical compatibility issues. Limiting the width of the isolation strip 7 to between 1cm and 20cm ensures that the isolation strip 7 can fully cover the stress concentration area and isolate the first film layer 5 from the perovskite solar cell 2, while also avoiding material waste or encroachment on the internal space of the module due to excessive width.

[0037] According to one embodiment of this invention, the melting point of the second adhesive layer 6 is not lower than the melting point of the first adhesive layer 5. It should be noted that if the melting point of the second adhesive layer 6 is lower than that of the first adhesive layer 5, the second adhesive layer 6 will soften to a certain extent when high temperatures occur during use, significantly reducing its fixing effect on the crystalline silicon solar cells and causing slippage and misalignment of the crystalline silicon solar cells. This invention uses a second adhesive layer 6 with a melting point not lower than that of the first adhesive layer 5, which improves the high-temperature creep resistance of the second adhesive layer 6, ensuring that it provides reliable support and fixing for the crystalline silicon solar cells during use and suppressing slippage or misalignment of the cell string.

[0038] According to one embodiment of this utility model, the melt index of the second adhesive film layer 6 is not greater than the melt index of the first adhesive film layer 5. When used in a high-temperature environment, the creep degree of the second adhesive film layer 6 after softening is lower than that of the first adhesive film layer 5, so that the crystalline silicon solar cell can still be relatively stably fixed on the back glass 4, thereby improving the stability of the solar cell module.

[0039] According to one embodiment of this utility model, the second adhesive film layer 6 is made of polyolefin elastomer or ethylene-vinyl acetate copolymer. By selecting polyolefin elastomer or ethylene-vinyl acetate copolymer as the second adhesive film layer 6, this utility model enables the second adhesive film layer 6 to possess both excellent adhesion and weather resistance, thereby ensuring stable bonding between the crystalline silicon solar cell 3 and other structures of the solar cell module, while also adapting to long-term outdoor use environments and reducing the risk of aging and failure.

[0040] Furthermore, in one embodiment, the melting point temperature range of the second adhesive film layer 6 is 110°C to 125°C. This configuration not only meets the requirements for high-temperature encapsulation of the perovskite solar cell 2 but also improves the creep resistance of the solar cell module.

[0041] Furthermore, in one embodiment, the melt flow index of the second adhesive film layer 6 is between 5 g / 10 min and 20 g / 10 min. A melt flow index of 5 g / 10 min to 20 g / 10 min balances the fluidity and structural stability of the adhesive film. Specifically, it avoids insufficient fluidity and inadequate adhesion due to a low melt flow index, while also preventing excessive flow and cell string slippage caused by a high melt flow index, ultimately ensuring the encapsulation quality and long-term operational reliability of the solar cell module.

[0042] According to one embodiment of this utility model, the peel force between the second adhesive film layer 6 and the backsheet glass 4 is greater than or equal to 90 N / cm. It can be understood that limiting the peel force between the second adhesive film layer 6 and the backsheet glass 4 to greater than or equal to 90 N / cm in this embodiment can improve the stability of the bond between the two, thereby resisting the stress impact caused by temperature and humidity cycles and alternating hot and cold temperatures during long-term outdoor use of the solar cell module, and avoiding problems such as interlayer delamination.

[0043] According to one embodiment of this utility model, the first adhesive film layer 5 is made of one of polyethylene, polyolefin elastomer, ethylene-vinyl acetate copolymer, or foamed polyethylene. It can be understood that this embodiment selects materials such as polyethylene, polyolefin elastomer, ethylene-vinyl acetate copolymer, or foamed polyethylene as the first adhesive film layer 5, which not only ensures a stable bond between the perovskite solar cell 2 and other structures in the module, but also buffers stress during lamination and use, reducing mechanical damage to the perovskite layer.

[0044] According to one embodiment of this invention, nanoscale solid silicon spheres are mixed into the first adhesive film layer 5. This arrangement not only utilizes the nano-effect of the silicon spheres to adjust the refractive index of the first adhesive film layer 5, but also increases the light transmittance of the first adhesive film layer 5, enhancing photoelectric conversion efficiency and increasing the power generation of the solar cell module.

[0045] It should be noted that the first adhesive film layer 5 and the nano-sized solid silicon spheres can be uniformly mixed by co-extrusion, or the silicon spheres can be first dispersed in a volatile solution to form a dispersion, and then attached to the surface of the first adhesive film layer 5 by spraying.

[0046] According to one embodiment of the present invention, such as Figure 2 As shown, there are multiple crystalline silicon solar cells 3, which are spaced apart, with a second adhesive layer 6 filling the gaps between adjacent cells. It can be understood that in this embodiment, the multiple crystalline silicon solar cells 3 are spaced apart and the second adhesive layer 6 is filled between them. On the one hand, the adhesive layer 6 fixes the relative positions of each crystalline silicon solar cell 3, preventing cell displacement or collision damage during lamination or use. It also buffers stress transmission between adjacent cells, reducing the risk of microcracks caused by differences in thermal expansion and contraction. On the other hand, the second adhesive layer 6 fills the gaps between the cells, forming a continuous insulating protective layer to prevent short circuits caused by exposed circuitry between adjacent cells.

[0047] According to one embodiment of the present invention, such as Figure 1 As shown, the solar cell module also includes an edge seal 8, which connects the front glass 1 and the back glass 4, and together with the front glass 1 and the back glass 4, forms a space protecting the perovskite solar cell 2, the first encapsulant layer 5, the crystalline silicon solar cell 3, and the second encapsulant layer 6. It can be understood that by connecting the front glass 1 and the back glass 4 and forming a closed protective space, the edge seal 8 effectively blocks moisture, dust, and corrosive gases from the external environment from entering the module, preventing performance degradation or structural damage to the perovskite solar cell 2, the crystalline silicon solar cell 3, and the two encapsulant layers due to external erosion. Furthermore, it enhances the sealing performance of the connection between the front glass 1 and the back glass 4, preventing bubbling and delamination inside the module. Simultaneously, it buffers the impact of external forces on the edges of the solar cell module during transportation, installation, and outdoor use, ensuring the structural stability of the internal core components, ultimately extending the outdoor lifespan of the entire solar cell module and maintaining its long-term photoelectric conversion efficiency.

[0048] Specifically, the edge seal 8 in this embodiment can be, but is not limited to, butyl rubber.

[0049] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A solar cell module, characterized in that, include: A front panel glass (1), a perovskite solar cell (2), a crystalline silicon solar cell (3), and a back panel glass (4) are stacked in sequence. A first adhesive film layer (5) is provided between the perovskite solar cell (2) and the crystalline silicon solar cell (3). The crystalline silicon solar cell (3) is fixed between the first adhesive film layer (5) and the back panel glass (4) by a second adhesive film layer (6). Along the thickness direction of the solar cell module, the orthographic projection of the crystalline silicon solar cell (3) toward the perovskite solar cell (2) falls within the orthographic projection range of the perovskite solar cell (2). The solar cell module also includes an isolation strip (7), at least a portion of which is located between the first adhesive film layer (5) and the perovskite solar cell (2) and surrounds the periphery of the perovskite solar cell (2).

2. The solar cell module according to claim 1, characterized in that, The front glass (1) includes a clearing area (101) surrounding the perovskite solar cell (2), and the outer periphery of the isolation strip (7) extends to the clearing area (101).

3. The solar cell module according to claim 1, characterized in that, Along the thickness direction of the solar cell module, at least a portion of the orthographic projection of the insulating strip (7) toward the crystalline silicon cell (3) falls within the orthographic projection range of the crystalline silicon cell (3); or, in the width direction of the insulating strip (7), the crystalline silicon cell (3) is adjacent to or spaced from the insulating strip (7).

4. The solar cell module according to claim 1, characterized in that, The isolation strip (7) also has one or more of the following features (a) to (b): (i) Along the thickness direction of the solar cell module, the thickness of the insulating strip (7) is 10 μm to 50 μm; (ii) The isolation strip (7) is made of a light-transmitting material; (iii) The material of the isolation strip (7) is one of polyethylene terephthalate, ethylene-tetrafluoroethylene copolymer, polytetrafluoroethylene, and polyvinylidene fluoride; (iv) The width of the isolation strip (7) is 1cm to 20cm.

5. The solar cell module according to claim 1, characterized in that, The melting point of the second adhesive film layer (6) is not lower than the melting point of the first adhesive film layer (5); And / or, the melt index of the second adhesive film layer (6) is not greater than the melt index of the first adhesive film layer (5).

6. The solar cell module according to claim 5, characterized in that, The material of the second adhesive film layer (6) is a polyolefin elastomer or an ethylene-vinyl acetate copolymer; And / or, the melting point temperature range of the second adhesive film layer (6) is 110°C to 125°C; And / or, the melt index of the second film layer (6) is 5 g / 10 min to 20 g / 10 min.

7. The solar cell module according to claim 1, characterized in that, The peel force between the second adhesive film layer (6) and the back glass (4) is greater than or equal to 90 N / cm.

8. The solar cell module according to claim 1, characterized in that, The first adhesive film layer (5) is made of one of polyethylene, polyolefin elastomer, ethylene-vinyl acetate copolymer, or foamed polyethylene; and / or, the first adhesive film layer (5) contains nano-sized solid silicon spheres.

9. The solar cell module according to any one of claims 1 to 8, characterized in that, There are multiple crystalline silicon solar cells (3), which are spaced apart, and the second adhesive film layer (6) is filled between two adjacent crystalline silicon solar cells (3).

10. The solar cell module according to any one of claims 1 to 8, characterized in that, The solar cell module also includes an edge seal (8), which connects the front glass (1) and the back glass (4) and forms a space with the front glass (1) and the back glass (4) to protect the perovskite cell (2), the first encapsulant layer (5), the crystalline silicon cell (3) and the second encapsulant layer (6).

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