Solar cell module, electric equipment and power generation equipment

Abstract

The utility model discloses a solar cell module, power generation equipment and electric equipment. The solar cell module comprises a substrate, a cell unit group and a packaging layer, the battery unit group is provided with a dead zone and an effective zone; the substrate is provided with one or more first grooves, first filling parts are arranged in at least part of the first grooves, and the hardness of the material of the first filling parts is different from that of the material of the substrate; and / or, the packaging layer is provided with one or more second grooves, at least part of the second grooves are internally provided with second filling parts, and the hardness of the material of the second filling parts is different from that of the material of the packaging layer. The solar cell module adaptive to the application scene is produced according to the requirement of the application scene for the mechanical bending performance of the solar cell module, and the application range of the solar cell module is expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of new energy especially relates to a solar cell module, electric equipment and power generation equipment. BACKGROUND

[0002] Solar cells can convert sunlight directly into electricity using the photoelectric effect, and play an important role in energy conversion and environmental protection. The mechanical bending performance of solar cells has an important influence on their application. For example, rigid solar cells with less bendability are suitable for outdoor photovoltaic panels, building exterior walls and other application scenarios, and flexible solar cells with greater bendability are suitable for solar backpacks, clothing and other application scenarios.

[0003] The above statements are only used to provide background information related to the present application, and do not necessarily constitute prior art. SUMMARY

[0004] In view of the technical problems in the background art, the present application provides a solar cell module, an electric device and a power generation device, which aims to regulate the mechanical bending performance of the solar cell module.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is a solar cell module, comprising:

[0006] a substrate;

[0007] a cell unit group arranged on one side of the substrate along a first direction; the cell unit group comprises one or more cell units connected in parallel and / or in series; the cell unit group has a dead zone and an active zone;

[0008] a packaging layer arranged on the side of the cell unit away from the substrate and forming a packaging space with the substrate to accommodate the cell unit group;

[0009] wherein the substrate has one or more first grooves, at least part of the first grooves are provided with a first filling part, the hardness of the material of the first filling part is different from the hardness of the material of the substrate; and / or,

[0010] the packaging layer has one or more second grooves, at least part of the second grooves are provided with a second filling part, the hardness of the material of the second filling part is different from the hardness of the material of the packaging layer.

[0011] The embodiments of the present application open first grooves in the substrate of the solar cell module and / or second grooves in the packaging layer. This design can fill the first grooves in the substrate and / or the second grooves in the packaging layer with filling materials of different hardnesses, so as to produce solar cell modules suitable for application scenarios according to the needs of the mechanical bending performance of the solar cell modules, which is beneficial to expand the application range of the solar cell modules.

[0012] In some embodiments, the first recess is arranged in the dead zone, and the material of the first filling portion is a transparent material or an opaque material;

[0013] In some embodiments, the first recess is arranged in the active zone, and the material of the first filling portion is a transparent material;

[0014] In some embodiments, the second recess is arranged in the dead zone, and the material of the second filling portion is a transparent material or an opaque material;

[0015] In some embodiments, the second recess is arranged in the active zone, and the material of the second filling portion is a transparent material or an opaque material.

[0016] The above scheme of the embodiments of the present application can improve the mechanical bending performance of the solar cell module without affecting the photoelectric conversion of the solar cell module.

[0017] In some embodiments, the substrate and / or the encapsulation layer comprises a rigid material or a flexible material;

[0018] In the case where the substrate is a rigid material, the hardness of the material of the first filling portion is less than the hardness of the material of the substrate. In the case where the solar cell module is bent, the substrate can extrude the first filling portion with lower hardness, buffer the bending stress of the substrate, and improve the mechanical bending performance of the solar cell module.

[0019] In the case where the substrate is a flexible material, the hardness of the material of the first filling portion is greater than the hardness of the material of the substrate. In the case where the solar cell module is bent, the first filling portion with higher hardness can improve the hardness of the solar cell module together with the substrate, so as to improve the mechanical bending performance of the solar cell module.

[0020] In the case where the encapsulation layer is a rigid material, the hardness of the material of the second filling portion is less than the hardness of the material of the encapsulation layer. In the case where the solar cell module is bent, the encapsulation layer can extrude the second filling portion with lower hardness, buffer the bending stress of the encapsulation layer, and improve the mechanical bending performance of the solar cell module.

[0021] In the case where the encapsulation layer is a flexible material, the hardness of the material of the second filling portion is greater than the hardness of the material of the encapsulation layer. In the case where the solar cell module is bent, the second filling portion with higher hardness can improve the hardness of the solar cell module together with the encapsulation layer, so as to improve the mechanical bending performance of the solar cell module.

[0022] In some embodiments, the material of the substrate has a Mohs hardness greater than or equal to 6, and the material of the first filling portion has a Mohs hardness less than 6; in the case that the solar cell assembly is subjected to bending, the substrate can extrude the first filling portion with lower hardness, buffer the bending stress suffered by the substrate, and improve the mechanical bending performance of the solar cell assembly;

[0023] And / or, the material of the substrate has a Mohs hardness less than or equal to 2, and the material of the first filling portion has a Mohs hardness greater than 2; in the case that the solar cell assembly is subjected to bending, the first filling portion with higher hardness can improve the hardness of the solar cell assembly together with the substrate, so as to improve the mechanical bending performance of the solar cell assembly;

[0024] And / or, the material of the encapsulation layer has a Mohs hardness greater than or equal to 6, and the material of the second filling portion has a Mohs hardness less than 6; in the case that the solar cell assembly is subjected to bending, the encapsulation layer can extrude the second filling portion with lower hardness, buffer the bending stress suffered by the encapsulation layer, and improve the mechanical bending performance of the solar cell assembly;

[0025] And / or, the material of the encapsulation layer has a Mohs hardness less than or equal to 2, and the material of the second filling portion has a Mohs hardness greater than 2; in the case that the solar cell assembly is subjected to bending, the second filling portion with higher hardness can improve the hardness of the solar cell assembly together with the encapsulation layer, so as to improve the mechanical bending performance of the solar cell assembly.

[0026] In some embodiments, the first groove is arranged on the side of the substrate away from the group of cell units and / or the first groove is arranged on the side of the substrate close to the group of cell units; the mechanical bending performance of the solar cell assembly can be improved without affecting the electrical performance of the group of cell units;

[0027] And / or, the second groove is arranged on the side of the encapsulation layer away from the group of cell units and / or the second groove is arranged on the side of the encapsulation layer close to the group of cell units; the mechanical bending performance of the solar cell assembly can be improved without affecting the encapsulation performance of the solar cell assembly.

[0028] In some embodiments, the maximum dimension of the first groove along the second direction is 10% to 100% of the maximum dimension of a single dead zone along the second direction, or 10% to 100% of the maximum dimension of a single effective zone along the second direction, or 10% to 100% of the sum of the maximum dimensions of adjacent effective zone and dead zone along the second direction; the embodiments of the present application regulate the maximum dimension of the first groove along the second direction, which is conducive to adjusting the arrangement scheme of the first groove according to the demand for the mechanical bending performance of the solar cell assembly;

[0029] And / or, the maximum dimension of the second groove along the second direction is 10% to 100% of the maximum dimension of the single dead zone along the second direction, or 10% to 100% of the maximum dimension of the single effective zone along the second direction, or 10% to 100% of the sum of the maximum dimensions of the adjacent effective zone and dead zone along the second direction; the second direction is perpendicular to the first direction; the embodiments of the present application regulate the maximum dimension of the second groove along the second direction, which is beneficial to adjusting the setting scheme of the second groove according to the demand for the mechanical bending performance of the solar cell module.

[0030] In some embodiments, the maximum dimension of the first groove along the first direction is greater than or equal to 10% of the maximum dimension of the substrate along the first direction, and less than or equal to 70% of the maximum dimension of the substrate along the first direction; the embodiments of the present application regulate the maximum dimension of the first groove along the first direction, which is beneficial to regulating the balance between the mechanical bending performance of the substrate and the mechanical bending performance of the first filling part, thereby being beneficial to improving the service life of the solar cell module.

[0031] And / or, the maximum dimension of the second groove along the first direction is greater than or equal to 10% of the maximum dimension of the packaging layer along the first direction, and less than or equal to 70% of the maximum dimension of the packaging layer along the first direction; the embodiments of the present application regulate the maximum dimension of the second groove along the first direction, which is beneficial to regulating the balance between the mechanical bending performance of the packaging layer and the mechanical bending performance of the second filling part, thereby being beneficial to improving the service life of the solar cell module.

[0032] In some embodiments, the maximum dimension of the first groove along the third direction is equal to the maximum dimension of the dead zone along the third direction; the embodiments of the present application make the maximum dimension of the first groove along the third direction equal to the maximum dimension of the dead zone along the third direction, which is relative to the scheme that the maximum dimension of the first groove along the third direction is less than the maximum dimension of the dead zone along the third direction, so that the stress of each part of the solar cell module in the third direction is uniform during the bending process, thereby being beneficial to improving the uniformity of the mechanical bending performance of the solar cell module.

[0033] And / or, the maximum dimension of the second groove along the third direction is equal to the maximum dimension of the dead zone along the third direction; the third direction is perpendicular to the first direction and perpendicular to the second direction; the embodiments of the present application make the maximum dimension of the second groove along the third direction equal to the maximum dimension of the dead zone along the third direction, which is relative to the scheme that the maximum dimension of the second groove along the third direction is less than the maximum dimension of the dead zone along the third direction, so that the stress of each part of the solar cell module in the third direction is uniform during the bending process, thereby being beneficial to improving the uniformity of the mechanical bending performance of the solar cell module 100.

[0034] In some embodiments, the cross section of the first groove and / or the second groove can be one or more of V-shaped, arc-shaped, and rectangular. Embodiments of the present application facilitate adjusting the arrangement of the first filling part and / or the second filling part according to the requirement of the mechanical bending performance of the solar cell module by regulating the cross section shape of the first groove and / or the second groove.

[0035] In some embodiments, the battery cell includes a first conductive layer, a light absorbing layer, and a second conductive layer stacked along a first direction, wherein the light absorbing layer includes a perovskite material.

[0036] In a second aspect, embodiments of the present application provide a power consuming device including any of the solar cell modules provided in the first aspect. The power consuming device adopts the solar cell provided in the present application and has at least the same advantages as the solar cell, which can improve the battery performance of the power consuming device.

[0037] In a third aspect, embodiments of the present application provide a power generating device including any of the solar cell modules provided in the first aspect. The power generating device adopts the solar cell provided in the present application and has at least the same advantages as the solar cell, which can improve the power generation performance of the power generating device. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0039] Figure 1 is a first structural schematic diagram of the solar cell module provided in embodiments of the present application;

[0040] Figure 2 is a partial structural schematic diagram of the solar cell module provided in embodiments of the present application; Figure 1

[0041] Figure 3 is a second structural schematic diagram of the solar cell module provided in embodiments of the present application;

[0042] Figure 4 is a third structural schematic diagram of the solar cell module provided in embodiments of the present application;

[0043] Figure 5 is a fourth structural schematic diagram of the solar cell module provided in embodiments of the present application;

[0044] Figure 6 is a fifth structural schematic diagram of the solar cell module provided in embodiments of the present application;​

[0045] Figure 7 is a sixth structural schematic diagram of a solar cell module provided by an embodiment of the present application;

[0046] Figure 8 is a seventh structural schematic diagram of a solar cell module provided by an embodiment of the present application;

[0047] Figure 9 is an eighth structural schematic diagram of a solar cell module provided by an embodiment of the present application;

[0048] Figure 10 is a structural schematic diagram of a substrate of a solar cell module shown in Figure 2

[0049] Figure 11 is a structural schematic diagram of a substrate of a solar cell module shown in Figure 3

[0050] Figure 12 is a structural schematic diagram of a substrate of a solar cell module shown in Figure 4

[0051] Figure 13 is a first bottom structural schematic diagram of a solar cell module shown in Figure 1

[0052] Figure 14 is a second bottom structural schematic diagram of a solar cell module shown in Figure 1

[0053] Figure 15 is a preparation flow schematic diagram of a solar cell module shown in Figure 1

[0054] Figure 16 is a structural schematic diagram of an electric device provided by an embodiment of the present application;

[0055] Figure 17 is a structural schematic diagram of a power generation device provided by an embodiment of the present application.

[0056] BRIEF DESCRIPTION OF THE DRAWINGS

[0057] ​​​​​​100 - solar cell module, 10 - substrate, 20 - cell unit group, 30 - encapsulation layer, 21 - cell unit, 211 - first conductive layer, 212 - light absorbing layer, 213 - second conductive layer, N - dead zone, Q - effective zone, 11 - first recess, 12 - first filling portion, 31 - second recess, 32 - second filling portion, P1 - first grooving, P2 - second grooving, P3 - third grooving, K1 - maximum dimension of the first recess 11 in the second direction Y, K2 - maximum dimension of a single dead zone N in the second direction Y, K3 - maximum dimension of a single effective zone Q in the second direction Y, H1 - maximum dimension of the first recess 11 in the first direction X, H2 - maximum dimension of the substrate 10 in the first direction X, L1 - maximum dimension of the first recess 11 in the third direction Z, L2 - maximum dimension of the dead zone N in the third direction Z, X - first direction, Y - second direction, Z - third direction, 1000 - power consuming device, 2000 - power generating device. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0059] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0060] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0061] The solar cell generally comprises a substrate, and the mechanical bending performance of the solar cell can be currently regulated by regulating the mechanical bending performance of the substrate. However, the current substrate is generally several general substrates, and one general substrate generally corresponds to only one fixed mechanical bending performance, and it is difficult to conveniently adjust the mechanical bending performance of the substrate according to the change of the application scene.

[0062] To solve the above technical problems, the embodiments of the application open grooves on the substrate and / or the packaging layer of the solar cell module. This design can fill the grooves of the substrate and / or the packaging layer with filling materials of different hardnesses, so as to produce a solar cell module, a power generation device and a power consumption device that are adapted to the application scene according to the needs of the mechanical bending performance of the solar cell module in the application scene.

[0063] The technical solutions described in the embodiments of the application are applicable to solar cell modules, power generation devices and power consumption devices. The solar cell modules disclosed in the application can be used for perovskite laminated solar cell modules and silicon-perovskite laminated solar cell modules, and the application is not limited thereto.

[0064] Please refer to Figures 1-9 , Figure 1 is a first structural schematic diagram of a solar cell module provided by an embodiment of the application, Figure 2 is Figure 1 a partial structural schematic diagram of a solar cell module provided by the application, Figure 3 is a second structural schematic diagram of a solar cell module provided by an embodiment of the application, Figure 4 is a third structural schematic diagram of a solar cell module provided by an embodiment of the application, Figure 5 is a fourth structural schematic diagram of a solar cell module provided by an embodiment of the application, Figure 6 is a fifth structural schematic diagram of a solar cell module provided by an embodiment of the application, Figure 7 is a sixth structural schematic diagram of a solar cell module provided by an embodiment of the application, Figure 8 is a seventh structural schematic diagram of a solar cell module provided by an embodiment of the application, Figure 9FIG. 8 is a schematic diagram of an eighth structure of a solar cell module according to an embodiment of the present application. It should be noted that the above-mentioned schematic diagram is only a schematic diagram of the solar cell module 100, and does not represent the actual number of the cell units 21 in the solar cell module 100, the actual size of each component, and the size ratio.

[0065] Referring to Figures 1-9 , an embodiment of the present application provides a solar cell module 100. The solar cell module 100 includes a substrate 10, a cell unit group 20, and an encapsulation layer 30. The cell unit group 20 is disposed on one side of the substrate 10 along a first direction X. The cell unit group 20 includes one or more cell units 21 connected in parallel and / or in series. The cell unit group 20 has a dead zone N and an active zone Q. The encapsulation layer 30 is disposed on one side of the substrate 10 and forms an encapsulation space to accommodate the cell unit group 20.

[0066] In some embodiments, referring to Figures 1-5 , the substrate 10 has one or more first grooves 11, and at least part of the first grooves 11 is provided with a first filling portion 12. The hardness of the first filling portion 12 is different from the hardness of the substrate 10. In some embodiments, referring to Figures 6-9 , the encapsulation layer 30 has one or more second grooves 31, and at least part of the second grooves 31 is provided with a second filling portion 32. The material hardness of the second filling portion 32 is different from the material hardness of the encapsulation layer 30. It should be noted that in the solar cell module 100, the scheme of the first groove 11 and the first filling portion 12 on the substrate 10 and the scheme of the second groove 31 and the second filling portion 32 on the encapsulation layer 30 can be independently set respectively.

[0067] In some embodiments, the solar cell module 100 refers to a device that converts light energy into electrical energy through the photovoltaic effect. Generally, the solar cell module 100 includes a first generation solar cell module represented by a crystalline silicon solar cell, a second generation solar cell module represented by a thin-film solar cell made of a direct bandgap semiconductor such as copper indium gallium selenide (CIGS), gallium arsenide (GaAs), and cadmium telluride (CdTe), and a third generation solar cell module represented by a dye-sensitized solar cell (DSSCs), an organic photovoltaic cell (OPVs), and a perovskite solar cell (PSCs). In some embodiments, the solar cell module 100 provided by the present application refers to a perovskite solar cell module (PSCs) using perovskite material as a light-absorbing material.

[0068] The solar cell module 100 includes, but is not limited to, a substrate 10, a cell unit group 20, and an encapsulation layer 30. The substrate 10 is used to support and protect the cell unit group 20. The cell unit group 20 is used to convert absorbed light energy into electrical energy. The encapsulation layer 30 is used to encapsulate the cell unit group 20 and plays a role in isolating water and oxygen.

[0069] In some embodiments, the substrate 10 is a light-transmitting material for transmitting incident light. In some embodiments, the substrate 10 can be a flexible material, for example, the flexible material can be a PET (Polyethylene terephthalate) material. In some embodiments, the substrate 10 can also be a rigid material, for example, the rigid material can be a glass material.

[0070] In some embodiments, the battery cell group 20 can include one battery cell 21 (not shown in the figure). In some embodiments, referring to Figures 1-9 , the battery cell group 20 can also include a plurality of battery cells 21, which can be connected in series, in parallel, or in a mixed connection, where the mixed connection means that there are both series and parallel connections among the plurality of battery cells 21. The solar cell module 100 improves the voltage and capacity performance of the solar cell module 100 by providing the battery cell group 20 including a plurality of battery cells 21.

[0071] The battery cell 21 is the core structure of the solar cell module 100 and can convert absorbed light energy into electrical energy. The battery cell 21 is composed of a plurality of stacked functional film layers. In some embodiments, referring to Figures 1-9 , the battery cell 21 includes a first conductive layer 211, a light-absorbing layer 212, and a second conductive layer 213 stacked. Among them, the light-absorbing layer 212 is used to absorb the photon energy of sunlight to generate electron-hole pairs, which are separated into free hole carriers and electron carriers at room temperature, and then the generated hole carriers and electron carriers are transmitted out and collected by the first conductive layer 211 and the second conductive layer 213, forming an electric current to the external circuit to do work, completing the process of photoelectric conversion.

[0072] In some embodiments, the light-absorbing layer 212 includes a perovskite material. The perovskite material refers to a material with the same crystal structure as CaTiO3, which has a high light absorption coefficient and a small exciton binding energy, and can be separated into free carriers at room temperature. It is one of the most promising optoelectronic materials at present.

[0073] In some embodiments, the perovskite material includes at least one of a compound represented by [A][B][X]3 and a compound represented by [A]2[C][D][X]6, where A includes at least one of inorganic or organic monovalent cations, B includes at least one inorganic divalent cation, C includes at least one inorganic monovalent cation, D includes at least one inorganic trivalent cation, and X includes at least one monovalent anion.

[0074] For example, the organic monovalent cation includes (H2N=CH-NH2) +(abbreviated as FA + ), CH3NH3 + (abbreviated as MA + ), or a combination thereof. Inorganic monovalent cations include at least one of Li + , Na + , K + , Rb + , Cs + , Cu + , Ag + , Au + , or Hg + .

[0075] Exemplarily, inorganic divalent cations include at least one of Pb 2+ , Sn 2+ , Be 2+ , Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ , Zn 2+ , Ge 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cd 2+ , Cu 2+ , Mn 2+ , Pd 2+ , Yb 2+ , or Eu 2+ .

[0076] Exemplarily, inorganic trivalent cations include at least one of Bi 3+ , Sb 3+ , Cr 3+ , Fe 3+ , Co 3+ , Ga 3+ , As 3+ , Ru 3+ , Rh 3+ , In 3+ , Ir 3+ , Au 3+ , or Al 3+ .

[0077] Exemplarily, monovalent anions include F - , Cl - , Br - , I - , SCN - , CNO - , OCN - , OSCN - , SH -, CN - , SeCN - , at least one of the group consisting of CN

[0078] In some embodiments, the perovskite material comprises Cs 0.05 FA 0.95 PbBr 0.15 I 2.85 , Cs 0.1 MA 0.15 FA 0.75 PbCl 0.15 I 2.85 , MAPbI3, FAPbI3, (FA 0.83 MA 0.17 ) 0.95 Cs 0.05 Pb(I 0.83 Br 0.17 )3, CsPbI3, CsPbI2Br, CsPbIBr2.

[0079] In some embodiments, the first conductive layer 211 and the second conductive layer 213 are both output terminals of the battery cell 21, one of the first conductive layer 211 and the second conductive layer 213 is used to collect hole carriers, and the other is used to collect electron carriers. One or both of the first conductive layer 211 and the second conductive layer 213 is made of a transparent conductive material. For example, the transparent conductive material includes one or more of fluorine-doped tin dioxide, indium tin oxide, aluminum-doped zinc oxide, boron-doped zinc oxide, and indium zinc oxide. When one of the first conductive layer 211 and the second conductive layer 213 is made of a transparent conductive material, the other can be made of a transparent conductive material as described above or another conductive material, which is not particularly limited in the present application. For example, the other conductive material includes one or more of metals and their alloys, and elemental carbon materials. For example, the metals and their alloys include one or more of gold, silver, copper, aluminum, nickel, chromium, bismuth, platinum, magnesium, molybdenum, and tungsten. For example, the elemental carbon materials include one or more of graphite, graphene, and carbon nanotubes. In some embodiments, the conductive layer on the side close to the substrate 10 is made of a transparent conductive material, which is used for light incidence.

[0080] In some embodiments, in addition to the first conductive layer 211, the light absorbing layer 212, and the second conductive layer 213, the battery cell 21 can further include other functional film layers. In some embodiments, in addition to the first conductive layer 211, the light absorbing layer 212, and the second conductive layer 213, the functional film layers of the battery cell 21 can further include a carrier transport layer, which is used to extract and transport hole carriers or to extract and transport electron carriers.

[0081] In some embodiments, the battery cell 21 can include a carrier transport layer, which can be disposed between the first conductive layer 211 and the light absorbing layer 212, or between the light absorbing layer 212 and the second conductive layer 213, and can be a hole transport layer or an electron transport layer. In some embodiments, the battery cell 21 can include two carrier transport layers, one of which is disposed between the first conductive layer 211 and the light absorbing layer 212, and is one of a hole transport layer and an electron transport layer; the other carrier transport layer is disposed between the light absorbing layer 212 and the second conductive layer 213, and is the other of the hole transport layer and the electron transport layer. Among them, the hole transport layer is used to extract and transport hole carriers, and to block electron carriers. The electron transport layer is used to extract and transport electron carriers, and to block hole carriers.

[0082] The application does not make special limitations on the hole transport material used for the hole transport layer, and the hole transport material commonly used in the art can be used. Illustratively, the hole transport material includes at least one of nickel oxide (NiO x , 1≤x≤2), cuprous iodide (CuI), cuprous oxide (Cu2O), cuprous thiocyanate (CuSCN), 2,2',7,7'-tetra[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene (Spiro-OMeTAD), 2,2',7,7'-tetra(di-p-tolylamino)spiro-9,9'-difuorene (Spiro-TTB), poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA), and [4-(3,6-dimethoxy-9H-carbazol-9-yl)butyl] phosphonic acid (MeO-4PACz), (4-(3,6-dimethyl-9H-carbazol-9-yl)butyl) phosphonic acid (Me-4PACz), [4-(9H-carbazol-9-yl)butyl] phosphonic acid (4PACz), (4-(3,6-dibromo-9H-carbazol-9-yl)butyl) phosphonic acid (Br-4PACz), [2-(3,6-dimethoxy-9H-carbazol-9-yl)ethyl] phosphonic acid (MeO-2PACz), (2-(3,6-dimethyl-9H-carbazol-9-yl)ethyl) phosphonic acid (Me-2PACz), (2-(9H-carbazol-9-yl)ethyl) phosphonic acid (2PACz), (2-(3,6-dibromo-9H-carbazol-9-yl)ethyl) phosphonic acid (Br-2PACz), and the like.

[0083] The electron transport material used for the electron transport layer is not particularly limited in the present application, and the electron transport material commonly used in the art can be used. For example, the electron transport material includes at least one of an imide compound, a quinone compound, a fullerene and a derivative thereof, a metal oxide, a semiconductor material oxide, a titanate, a fluoride and a derivative thereof, and a material obtained by doping or passivating the above materials. Illustratively, the imide compound includes at least one of phthalimide, succinimide, N-bromosuccinimide, glutarimide, or maleimide. Illustratively, the quinone compound includes at least one of benzoquinone, naphthoquinone, phenanthraquinone, or anthraquinone. Illustratively, the metal element in the metal oxide includes at least one of Mg, Cd, Zn, In, Pb, W, Sb, Bi, Hg, Ti, Ag, Mn, Fe, V, Sn, Zr, Sr, Ga, or Cr. Illustratively, the fullerene and the derivative thereof include one or more of fullerene C 60 60, fullerene C 70 61, [6,6]-phenyl C 61 butyric acid methyl ester (PC 61 BM), [6,6]-phenyl C 71 butyric acid methyl ester (PC 71 BM), etc. Alternatively, the metal oxide includes at least one of tin dioxide (Sn02) or titanium dioxide (Ti02). Illustratively, the semiconductor material oxide includes silicon oxide. Illustratively, the titanate includes at least one of strontium titanate or calcium titanate. Illustratively, the fluoride includes at least one of lithium fluoride or calcium fluoride.

[0084] In order to obtain the required voltage and current output, the large-area functional film layer is divided into a plurality of cell units 21 by scribing during the preparation process of the solar cell 100, and then the plurality of cell units 21 are combined into a cell unit group 20 by series connection or parallel connection or mixed connection. The aforementioned scribing method makes the cell unit 21 have a scribed area, and this part of the area is used to connect adjacent cell units, cannot utilize light and perform photoelectric conversion, and is defined as a dead zone N. The area of the cell unit 21 except the dead zone N can effectively utilize light and perform photoelectric conversion, and is defined as an effective zone Q.

[0085] Taking the solar cell assembly 100 shown in Figure 2 as an example, the dead zone N and the effective zone Q of the cell unit 21 are described.

[0086] Referring to Figure 2, the battery unit 21 has three notches, which are a first notch P1, a second notch P2 and a third notch P3. Specifically, the first conductive layer 211 has the first notch P1, which is used to cut the first conductive layer 211; the light-absorbing layer 212 has the second notch P2, which is located on one side of the first notch P1, and the second notch P2 is filled with a conductive material, which is used to electrically connect the first conductive layer 211 of the battery unit 21 with the second conductive layer 213 of another adjacent battery unit 21, and further, the material filling the second notch P2 can be realized by forming the second conductive layer 213; the second conductive layer 213 has the third notch P3, which is located on the side of the second notch P2 away from the first notch P1, and is used to cut the second conductive layer 213. Between the two adjacent battery units 21, the region between the end of the first notch P1 away from the third notch P3 and the end of the third notch P3 away from the first notch P1 is the dead zone N, and the region of the battery unit 21 except the dead zone N is the effective zone Q. Generally, except for the battery units 21 at the ends, one battery unit 21 corresponds to one dead zone N and one effective zone Q.

[0087] Referring to Figures 1-5 , in order to improve the mechanical bending performance of the solar cell module 100 and the adaptability to application scenarios, in some embodiments, the substrate 10 has one or more first grooves 11, and at least part of the first grooves 11 is provided with a first filling part 12 having a hardness different from that of the material of the substrate 10, which can be adapted to the requirements of the application scenarios for the mechanical bending performance of the solar cell module 100 by adjusting the setting position of the first groove 11 and adjusting the hardness of the first filling part 12.

[0088] In some embodiments, referring to Figure 1 , the first groove 11 is arranged in the dead zone N. In some embodiments, referring to Figure 3 , the first groove 11 is arranged in the effective zone Q. In some embodiments, referring to Figure 4 , part of the first groove 11 is arranged in the dead zone N, and the other part is arranged in the effective zone Q.

[0089] In some embodiments, referring to Figures 1-4 , the first groove 11 is arranged on the side of the substrate 10 away from the battery unit group 20. In some embodiments, referring to Figure 5 , the first groove 11 is arranged on the side of the substrate 10 close to the battery unit group 20, Figure 5 , the first groove 11 arranged on the side of the substrate 10 close to the battery unit group 20 is arranged in the dead zone N. In some embodiments, the first groove 11 arranged on the side of the substrate 10 close to the battery unit group 20 can also be arranged in the effective zone Q (refer to Figure 3the scheme shown in FIG. 11B). In some embodiments, the first groove 11 disposed on the side of the substrate 10 close to the battery cell group 20 can also be partially disposed in the dead zone N and partially disposed in the active zone Q (refer to the scheme shown in FIG. 11A). In some embodiments, the first groove 11 disposed on the side of the substrate 10 close to the battery cell group 20 can also be partially disposed in the dead zone N and partially disposed in the active zone Q (refer to the scheme shown in FIG. 11B). Figure 4

[0090] It should be noted that the first filling part 12 provided by the embodiments of the present application can or can not completely fit the first groove 11, for example, the first filling part 12 does not completely fill the entire first groove 11, and the maximum dimension of the first filling part 12 along the first direction X is smaller than the maximum dimension of the first groove 11 along the first direction X.

[0091] Referring to Figures 6-9 In order to improve the mechanical bending performance of the solar cell module 100 and the adaptability to application scenarios, in some embodiments, the packaging layer 30 has one or more second grooves 31, and at least part of the second groove 31 is provided with a second filling part 32 having a hardness different from that of the material of the packaging layer 30, which can be adapted to the requirements of the application scenario for the mechanical bending performance of the solar cell module 100 by adjusting the position of the second groove 31 and adjusting the hardness of the second filling part 32.

[0092] In some embodiments, referring to Figure 6 The second groove 31 is disposed in the dead zone N. In some embodiments, referring to Figure 7 The second groove 31 is disposed in the active zone Q. In some embodiments, referring to Figure 8 Part of the second groove 31 is disposed in the dead zone N and part of the second groove 31 is disposed in the active zone Q.

[0093] In some embodiments, referring to Figures 6-8 The second groove 31 is disposed on the side of the packaging layer 30 away from the battery cell group 20. In some embodiments, referring to Figure 9 The second groove 31 is disposed on the side of the packaging layer 30 close to the battery cell group 20, Figure 9 The second groove 31 disposed on the side of the packaging layer 30 close to the battery cell group 20 is disposed in the dead zone N. In some embodiments, the second groove 31 disposed on the side of the packaging layer 30 close to the battery cell group 20 can also be disposed in the active zone Q (refer to the scheme shown in FIG. 11A). In some embodiments, the second groove 31 disposed on the side of the packaging layer 30 close to the battery cell group 20 can also be partially disposed in the dead zone N and partially disposed in the active zone Q (refer to the scheme shown in FIG. 11B). Figure 7 Figure 8

[0094] ​​​It should be noted that the second filling part 32 provided by the embodiments of the present application can or can not completely fit the second groove 31. For example, the second filling part 32 does not completely fill the entire second groove 31, and the maximum dimension of the second filling part 32 along the first direction X is less than the maximum dimension of the second groove 31 along the first direction X.

[0095] The embodiments of the present application open the first groove 11 in the substrate 10 of the solar cell module 100 and / or open the second groove 31 in the encapsulation layer 30. Such a design can fill the first groove 11 in the substrate 10 and / or the second groove 31 in the encapsulation layer 30 with filling materials of different hardnesses, so as to produce a solar cell module 100 that is adapted to the application scenario according to the needs of the mechanical bending performance of the solar cell module 100 in the application scenario, and is beneficial to expanding the application range of the solar cell module 100.

[0096] In some embodiments, the first groove 11 is arranged in the dead zone N, and the material of the first filling part 12 is a transparent material or an opaque material. In this way, the mechanical bending performance of the solar cell module 100 can be improved without affecting the photoelectric conversion of the solar cell module 100.

[0097] In some embodiments, the first groove 11 is arranged in the active area Q, and the material of the first filling part 12 is a transparent material. In this way, the mechanical bending performance of the solar cell module 100 can be improved without affecting the photoelectric conversion of the solar cell module 100.

[0098] In some embodiments, the second groove 31 is arranged in the dead zone N, and the material of the second filling part 32 is a transparent material or an opaque material. In this way, the mechanical bending performance of the solar cell module 100 can be improved without affecting the photoelectric conversion of the solar cell module 100.

[0099] In some embodiments, the second groove 31 is arranged in the active area Q, and the material of the second filling part 32 is a transparent material or an opaque material. In this way, the mechanical bending performance of the solar cell module 100 can be improved without affecting the photoelectric conversion of the solar cell module 100.

[0100] In some embodiments, the substrate 10 and / or the encapsulation layer 30 comprises a rigid material or a flexible material.

[0101] The rigid material refers to a material that can maintain its shape and structure stable and is not easy to deform or flex when subjected to stress. The flexible material refers to a material that can be deformed greatly when subjected to external force, but can recover or partially recover to its original state after the external force is removed.

[0102] In some embodiments, when the substrate 10 is made of rigid material, the hardness of the material of the first filling portion 12 is less than that of the material of the substrate 10. When the solar cell module 100 is subjected to bending, the substrate 10 can extrude the first filling portion 12 with lower hardness, thereby buffering the bending stress received by the substrate 10 and improving the mechanical bending performance of the solar cell module 100. For example, the substrate 10 can be made of glass. The first filling portion 12 can be made of one of plastic material and rubber material, such as polyvinyl alcohol (PVA), polyethylene terephthalate (PET), polyimide (PI), polyethylene naphthalate glycol (PEN), polydimethylsiloxane (PDMS), styrene butadiene rubber, nitrile rubber, etc.

[0103] In some embodiments, when the substrate 10 is made of flexible material, the hardness of the material of the first filling portion 12 is greater than that of the material of the substrate 10. When the solar cell module 100 is subjected to bending, the first filling portion 12 with higher hardness can jointly improve the hardness of the solar cell module 100 together with the substrate 10, thereby improving the mechanical bending performance of the solar cell module 100. For example, the substrate 10 can be made of plastic material, such as one of polyvinyl alcohol (PVA), polyethylene terephthalate (PET), polyimide (PI), polyethylene naphthalate glycol (PEN), and polydimethylsiloxane (PDMS). The first filling portion 12 can be made of one of glass material and metal material. The materials of different filling portions can be the same or different.

[0104] In some embodiments, when the encapsulation layer 30 is made of rigid material, the hardness of the material of the second filling portion 32 is less than that of the material of the encapsulation layer 30. When the solar cell module 100 is subjected to bending, the encapsulation layer 30 can extrude the second filling portion 32 with lower hardness, thereby buffering the bending stress received by the encapsulation layer 30 and improving the mechanical bending performance of the solar cell module 100. For example, the encapsulation layer 30 can be made of glass. The second filling portion 32 can be made of one of plastic material and rubber material, such as polyvinyl alcohol (PVA), polyethylene terephthalate (PET), polyimide (PI), polyethylene naphthalate glycol (PEN), polydimethylsiloxane (PDMS), styrene butadiene rubber, nitrile rubber, etc.

[0105] In some embodiments, the material of the second filling part 32 has a hardness greater than the hardness of the material of the encapsulation layer 30. When the solar cell module 100 is subjected to bending, the second filling part 32 with higher hardness can jointly increase the hardness of the solar cell module 100 with the encapsulation layer 30, so as to improve the mechanical bending performance of the solar cell module 100. For example, the encapsulation layer 30 can be made of plastic material, such as polyvinyl alcohol (PVA), polyethylene terephthalate (PET), polyimide (PI), polyethylene naphthalate glycol (PEN), or polydimethylsiloxane (PDMS), and the second filling part 32 can be made of one or both of glass material and metal material.

[0106] In some embodiments, the material of the substrate 10 has a Mohs hardness greater than or equal to 6, and the material of the first filling part 12 has a Mohs hardness less than 6. When the solar cell module 100 is subjected to bending, the substrate 10 can extrude the first filling part 12 with lower hardness, so as to buffer the bending stress suffered by the substrate 10 and improve the mechanical bending performance of the solar cell module 100.

[0107] In some embodiments, the material of the substrate 10 has a Mohs hardness less than or equal to 2, and the material of the first filling part 12 has a Mohs hardness greater than 2. When the solar cell module 100 is subjected to bending, the first filling part 12 with higher hardness can jointly increase the hardness of the solar cell module 100 with the substrate 10, so as to improve the mechanical bending performance of the solar cell module 100.

[0108] In some embodiments, the material of the encapsulation layer 30 has a Mohs hardness greater than or equal to 6, and the material of the second filling part 32 has a Mohs hardness less than 6. When the solar cell module 100 is subjected to bending, the encapsulation layer 30 can extrude the second filling part 32 with lower hardness, so as to buffer the bending stress suffered by the encapsulation layer 30 and improve the mechanical bending performance of the solar cell module 100.

[0109] In some embodiments, the material of the encapsulation layer 30 has a Mohs hardness less than or equal to 2, and the material of the second filling part 32 has a Mohs hardness greater than 2. When the solar cell module 100 is subjected to bending, the second filling part 32 with higher hardness can jointly increase the hardness of the solar cell module 100 with the encapsulation layer 30, so as to improve the mechanical bending performance of the solar cell module 100.

[0110] In some embodiments, referring to Figures 1-4 , the first groove 11 is arranged on the side of the substrate 10 away from the group of cell units 20, which can improve the mechanical bending performance of the solar cell module 100 without affecting the electrical performance of the group of cell units 20.

[0111] In some embodiments, referring toFigure 5 The first groove 11 is arranged on the side of the substrate 10 close to the battery cell group 20, which can improve the mechanical bending performance of the solar cell module 100 without affecting the packaging performance of the solar cell module 100.

[0112] In some embodiments, referring to Figures 6-8 The second groove 31 is arranged on the side of the packaging layer 30 away from the battery cell group 20, which can improve the mechanical bending performance of the solar cell module 100 without affecting the electrical performance of the battery cell group 20.

[0113] In some embodiments, referring to Figure 9 The second groove 31 is arranged on the side of the packaging layer 30 close to the battery cell group 20, which can improve the mechanical bending performance of the solar cell module 100 without affecting the packaging performance of the solar cell module 100.

[0114] In some embodiments, referring to Figure 2 The battery cell 21 comprises a first conductive layer 211, a light-absorbing layer 212, and a second conductive layer 213.

[0115] In some embodiments, referring to Figure 5 The first groove 11 is arranged on the side of the substrate 10 close to the battery cell group 20, and the first filling part 12 is completely coincident with part or all of the first conductive layer 211, which can improve the mechanical bending performance of the solar cell module 100 without affecting the electrical disconnected state of the first conductive layer 211 of the battery cell 21 where the first filling part 12 is arranged and the first conductive layer 211 of the adjacent battery cell 21.

[0116] In some embodiments, the first groove 11 is arranged on the side of the substrate 10 away from the battery cell group 20, the first groove 11 is arranged in at least part of the dead zone N (see Figures 1-2 ), or the first groove 11 is arranged in at least part of the effective zone Q (see Figure 3 ), or part of the first groove 11 is arranged in the dead zone N and the other part is arranged in the effective zone Q (see Figure 4 ), which can improve the mechanical bending performance of the solar cell module 100 without affecting the electrical performance of the battery cell group 20.

[0117] In some embodiments, referring to Figure 9The second groove 31 is arranged on the side of the encapsulation layer 30 close to the battery cell group 20, and the second filling part 32 is fully overlapped with part or all of the second conductive layer 213. The second filling part 32 can improve the mechanical bending performance of the solar cell module 100 without affecting the electrical disconnected state of the second conductive layer 213 of the battery cell 21 where the second filling part 32 is arranged and the second conductive layer 213 of the adjacent battery cell 21.

[0118] In some embodiments, the second groove 31 is arranged on the side of the encapsulation layer 30 away from the battery cell group 20, and the second groove 31 is arranged in at least part of the dead zone N (see Figure 6 ), or the second groove 31 is arranged in at least part of the effective zone Q (see Figure 7 ), or part of the second groove 31 is arranged in the dead zone N and the other part is arranged in the effective zone Q (see Figure 8 ), which can improve the mechanical bending performance of the solar cell module 100 without affecting the electrical performance of the battery cell group 20.

[0119] Please refer to Figures 10-12 , Figure 10 is a structural diagram of the substrate of the solar cell module shown in Figure 2 , Figure 11 is a structural diagram of the substrate of the solar cell module shown in Figure 3 , Figure 12 is a structural diagram of the substrate of the solar cell module shown in Figure 4 .

[0120] In some embodiments, referring to Figure 10 , the maximum dimension K1 of the first groove 11 along the second direction Y is 10% to 100% of the maximum dimension K2 of a single dead zone N along the second direction Y. The maximum dimension K1 of the first groove 11 along the second direction Y is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% of the maximum dimension K2 of a single dead zone N along the second direction Y, or a range formed by any two of the above values, for example, 10% to 30%, 20% to 80%, 50% to 100%, etc.

[0121] In some embodiments, referring to Figure 11The maximum dimension K1 of the first groove 11 along the second direction Y is 10% to 100% of the maximum dimension K3 of the single effective area Q along the second direction Y. The maximum dimension K1 of the first groove 11 along the second direction Y is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% of the maximum dimension K3 of the single effective area Q along the second direction Y, or a range of any two of the above values, for example, it can be 10% to 30%, 20% to 80%, 50% to 100%, etc.

[0122] In some embodiments, see Figure 12 The maximum dimension K1 of the first groove 11 along the second direction Y is 10% to 100% of the sum of the maximum dimensions (K2+K3) of the adjacent effective area Q and dead area N along the second direction Y. The maximum dimension K1 of the first groove 11 along the second direction Y is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% of the sum of the maximum dimensions (K2+K3) of the adjacent effective area Q and dead area N along the second direction Y, or a range of any two of the above values, for example, it can be 10% to 30%, 20% to 80%, 50% to 100%, etc.

[0123] The embodiment of this application adjusts the maximum dimension K1 of the first groove 11 along the second direction Y, which is beneficial to adjust the setting scheme of the first groove 11 according to the requirements of the mechanical bending performance of the solar cell module 100.

[0124] In some embodiments, the maximum dimension of the second groove 31 along the second direction Y is 10% to 100% of the maximum dimension of the single dead zone N along the second direction Y. The maximum dimension of the second groove 31 along the second direction Y is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100% of the maximum dimension of the single dead zone N along the second direction Y, or a range consisting of any two of the above values. For example, it can be 10% to 30%, 20% to 80%, 50% to 100%, etc. It should be noted that the encapsulation layer 30 scheme of this embodiment is different from... Figure 10 The substrate 10 shown is similar to the design shown; please refer to [link / reference]. Figure 6 and Figure 10 This embodiment will be understood.

[0125] In some embodiments, the maximum dimension of the second groove 31 along the second direction Y is 10-100% of the maximum dimension of the single active area Q along the second direction Y. The maximum dimension of the second groove 31 along the second direction Y is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% of the maximum dimension of the single active area Q along the second direction Y, or a range between any two of the above values, for example, 10-30%, 20-80%, 50-100%, etc. It should be noted that the scheme of the encapsulation layer 30 of the present embodiment is similar to the scheme of the substrate 10 shown in Figure 11 , please refer to Figure 7 and Figure 11 for the understanding of the present embodiment.

[0126] In some embodiments, the maximum dimension of the second groove 31 along the second direction Y is 10-100% of the sum of the maximum dimensions of the adjacent active area Q and dead area N along the second direction Y. The second direction Y is perpendicular to the first direction X. The maximum dimension of the second groove 31 along the second direction Y is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% of the sum of the maximum dimensions of the adjacent active area Q and dead area N along the second direction Y, or a range between any two of the above values, for example, 10-30%, 20-80%, 50-100%, etc. It should be noted that the scheme of the encapsulation layer 30 of the present embodiment is similar to the scheme of the substrate 10 shown in Figure 12 , please refer to Figure 8 and Figure 12 for the understanding of the present embodiment.

[0127] The embodiments of the present application regulate the maximum dimension of the second groove 31 along the second direction Y, which is beneficial for adjusting the setting scheme of the second groove 31 according to the demand for the mechanical bending performance of the solar cell module 100.

[0128] In some embodiments, please refer to Figures 10-12In some embodiments, the maximum dimension H1 of the first recess 11 along the first direction X is greater than or equal to 10% of the maximum dimension H2 of the substrate 10 along the first direction X, and less than or equal to 70% of the maximum dimension H2 of the substrate 10 along the first direction X. The maximum dimension H1 of the first recess 11 along the first direction X can be 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70% of the maximum dimension H2 of the substrate 10 along the first direction X, or a range between any two of the above values, for example, 1% to 20%, 10% to 50%, 30% to 70%, etc.

[0129] The embodiments of the present application control the maximum dimension H1 of the first recess 11 along the first direction X, which is beneficial to control the balance between the mechanical bending performance of the substrate 10 and the mechanical bending performance of the first filling part 12, thereby being beneficial to improve the service life of the solar cell module 100.

[0130] In some embodiments, the maximum dimension of the second recess 31 along the first direction X is greater than or equal to 10% of the maximum dimension of the encapsulation layer 30 along the first direction X, and less than or equal to 70% of the maximum dimension of the encapsulation layer 30 along the first direction X. The maximum dimension of the second recess 31 along the first direction X can be 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70% of the maximum dimension of the encapsulation layer 30 along the first direction X, or a range between any two of the above values, for example, 1% to 20%, 10% to 50%, 30% to 70%, etc. It should be noted that the scheme of the encapsulation layer 30 of the present embodiment is similar to the scheme of the substrate 10 shown in Figures 10-12 Figures 6-12 The present embodiment is understood.

[0131] The embodiments of the present application control the maximum dimension of the second recess 31 along the first direction X, which is beneficial to control the balance between the mechanical bending performance of the encapsulation layer 30 and the mechanical bending performance of the second filling part 32, thereby being beneficial to improve the service life of the solar cell module 100.

[0132] Please refer to Figure 13 , Figure 13 is Figure 1 the first bottom view structural schematic diagram of the solar cell module.

[0133] In some embodiments, the maximum dimension L1 of the first recess 11 along the third direction Z is equal to the maximum dimension L2 of the dead zone N along the third direction Z.

[0134] ​The embodiment of the present application makes the maximum size L1 of the first groove 11 along the third direction Z equal to the maximum size L2 of the dead zone N along the third direction Z, and makes the maximum size L1 of the first groove 11 along the third direction Z smaller than the maximum size L2 of the dead zone N along the third direction Z, so that the stress of each part of the solar cell module 100 in the third direction Z is uniform during the bending process, thereby facilitating the improvement of the uniformity of the mechanical bending performance of the solar cell module 100.

[0135] It can be understood that the extension direction of the first groove 11 can be parallel or intersected with the third direction Z. In the case where the first groove 11 intersects with the third direction Z (not shown in the figure), the maximum size L1 of the first groove 11 along the third direction Z is the maximum size of the projection of the first groove 11 in the third direction Z.

[0136] Please refer to Figure 14 , Figure 14 is Figure 1 the second bottom view structural schematic diagram of the solar cell module.

[0137] The solar cell module 100 provided by the embodiment is different from the solar cell module 100 shown in Figure 13 in that: in the solar cell module 100 provided by the embodiment, the plurality of first grooves 11 are arranged at intervals along the third direction Z, and the plurality of first grooves 11 are arranged at intervals along the second direction Y.

[0138] In some embodiments, the maximum size of the second groove 31 along the third direction Z is equal to the maximum size of the dead zone N along the third direction Z. The third direction Z is perpendicular to the first direction X and perpendicular to the second direction Y. It should be noted that the scheme of the encapsulation layer 30 of the embodiment is similar to the scheme of the substrate 10 shown in Figure 13 Please refer to Figures 6-9 and Figure 13 for understanding the embodiment. In addition, in some embodiments, the plurality of second grooves 31 in the solar cell module 100 can also be arranged at intervals along the third direction Z, and the plurality of second grooves 31 can be arranged at intervals along the second direction Y. Please refer to Figures 6-9 and Figure 14 for understanding the embodiment.

[0139] The embodiment of the present application makes the maximum size L1 of the first groove 11 along the third direction Z equal to the maximum size L2 of the dead zone N along the third direction Z, and makes the maximum size L1 of the first groove 11 along the third direction Z smaller than the maximum size L2 of the dead zone N along the third direction Z, so that the stress of each part of the solar cell module 100 in the third direction Z is uniform during the bending process, thereby facilitating the improvement of the uniformity of the mechanical bending performance of the solar cell module 100.

[0140] It can be understood that the extending direction of the second groove 31 can be parallel or intersected with the third direction Z, and in the case that the second groove 31 intersects with the third direction Z (not shown in the figure), the maximum size L2 of the first groove 11 along the third direction Z is the maximum size of the projection of the second groove 31 in the third direction Z. In some embodiments, the cross section of the first groove 11 can be one or more of V-shaped, arc-shaped and rectangular, which are not limited in the present application. For example, the arc shape can be a semicircular arc shape, an irregular circular arc shape, a wavy line, etc.

[0141] The embodiments of the present application can adjust the setting scheme of the first filling part 12 according to the demand for the mechanical bending performance of the solar cell module 100 by regulating the cross-sectional shape of the first groove 11.

[0142] In some embodiments, the cross section of the second groove 31 can be one or more of V-shaped, arc-shaped and rectangular, which are not limited in the present application. For example, the arc shape can be a semicircular arc shape, an irregular circular arc shape, a wavy line, etc.

[0143] The embodiments of the present application can adjust the setting scheme of the second filling part 32 according to the demand for the mechanical bending performance of the solar cell module 100 by regulating the cross-sectional shape of the second groove 31.

[0144] Referring to Figure 15 , Figure 15 is Figure 1 the preparation flowchart of the solar cell module shown in FIG. 1.

[0145] Referring to Figure 15 , the embodiments of the present application provide a preparation flowchart of a solar cell module 100 as shown in Figure 1 and Figure 2 , comprising the following steps:

[0146] (1) providing a substrate 10, one side of which is provided with a plurality of first grooves 11.

[0147] (2) filling the first filling part 12 in each of the plurality of first grooves 11 of the substrate 10.

[0148] (3) providing a first conductive layer 211 on the side of the substrate 10 away from the first grooves 11.

[0149] (4) etching a plurality of first etching grooves P1 on the first conductive layer 211 for cutting the first conductive layer 211.

[0150] (5) providing a light absorption layer 212 on the side of the first conductive layer 211 away from the substrate 10.

[0151] (6) Etching a plurality of second grooves P2 on the light absorbing layer 212, and located on one side of the first groove P1, filling the second groove P2 with a conductive material, for electrically connecting the first conductive layer 211 of the battery unit 21 with the second conductive layer 213 of another adjacent battery unit 21.

[0152] (7) Setting the second conductive layer 213 on the side of the light absorbing layer 212 away from the substrate 10.

[0153] (8) Etching a third groove P3 on the second conductive layer 213, and located on the side of the second groove P2 away from the first groove P1, for at least cutting off the second conductive layer 213.

[0154] (9) Setting the encapsulation layer 30 on the side of the second conductive layer 213 away from the substrate 10.

[0155] Please refer to Figure 16 , Figure 16 is a structural schematic diagram of an electrical equipment provided by an embodiment of the present application.

[0156] In a second aspect, referring to Figure 16 , an embodiment of the present application provides an electrical equipment 1000, comprising any solar cell assembly 100 provided in the first aspect.

[0157] In an embodiment of the present application, the solar cell assembly 100 is used as an electric energy source of the electrical equipment 1000, to realize normal operation of the electrical equipment 1000. The electrical equipment 1000 adopts the solar cell assembly 100 provided by the present application, and at least has the same advantages as the solar cell assembly 100, to improve the battery performance of the electrical equipment 1000. As an example, the electrical equipment 1000 can include lighting devices, display devices, or new energy vehicles, etc.

[0158] Please refer to Figure 17 , Figure 17 is a structural schematic diagram of a power generation equipment provided by an embodiment of the present application.

[0159] In a third aspect, referring to Figure 17 , an embodiment of the present application provides a power generation equipment 2000, comprising any solar cell assembly 100 provided in the first aspect.

[0160] In the embodiments of the present application, the solar cell module 100 is used as the energy source of the power generation device 2000 to realize the power output of the power generation device 2000. The power generation device 2000 uses the solar cell module 100 provided by the present application and has at least the same advantages as the solar cell module 100, which can improve the power generation performance of the power generation device 2000. As an example, the power generation device 2000 can be applied to the fields of building electricity, wearable device electricity, smart phone electricity, vehicle-mounted battery electricity, etc.

[0161] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A solar cell module, characterized by, The solar cell module comprises: a substrate; a battery cell group arranged on one side of the substrate along a first direction, the battery cell group comprising one or more battery cells connected in parallel and / or in series, the battery cell group having a dead zone and an active zone; a packaging layer arranged on a side of the battery cell away from the substrate and forming a packaging space with the substrate to accommodate the battery cell group; wherein the substrate has one or more first grooves, at least part of the first grooves being provided with a first filling part, the material of the first filling part having a hardness different from that of the material of the substrate; and / or, the packaging layer has one or more second grooves, at least part of the second grooves being provided with a second filling part, the material of the second filling part having a hardness different from that of the material of the packaging layer.

2. The solar cell module according to claim 1, wherein when the first groove is arranged in the dead zone, the material of the first filling part is a transparent material or an opaque material; and / or, when the first groove is arranged in the active zone, the material of the first filling part is a transparent material; and / or, when the second groove is arranged in the dead zone, the material of the second filling part is a transparent material or an opaque material; and / or, when the second groove is arranged in the active zone, the material of the second filling part is a transparent material or an opaque material.

3. The solar cell module according to claim 1, characterized by The substrate and / or the packaging layer comprises a rigid material or a flexible material; when the substrate is a rigid material, the hardness of the material of the first filling part is less than that of the material of the substrate; and / or, when the substrate is a flexible material, the hardness of the material of the first filling part is greater than that of the material of the substrate; and / or, when the packaging layer is a rigid material, the hardness of the material of the second filling part is less than that of the material of the packaging layer; and / or, when the packaging layer is a flexible material, the hardness of the material of the second filling part is greater than that of the material of the packaging layer.

4. The solar cell module according to claim 3, wherein the Mohs hardness of the material of the substrate is greater than or equal to 6, and the Mohs hardness of the material of the first filling part is less than 6; and / or, the Mohs hardness of the material of the substrate is less than or equal to 2, and the Mohs hardness of the material of the first filling part is greater than 2; and / or, the Mohs hardness of the material of the packaging layer is greater than or equal to 6, and the Mohs hardness of the material of the second filling part is less than 6; and / or, the Mohs hardness of the material of the packaging layer is less than or equal to 2, and the Mohs hardness of the material of the second filling part is greater than 2.

5. The solar cell module according to any one of claims 1 to 4, characterized by The first groove is arranged on a side of the substrate away from the battery cell group and / or the first groove is arranged on a side of the substrate close to the battery cell group; and / or, the second groove is arranged on a side of the packaging layer away from the battery cell group and / or the second groove is arranged on a side of the packaging layer close to the battery cell group.

6. The solar cell module according to claim 5, wherein The maximum dimension of the first groove along the second direction is 10% to 100% of the maximum dimension of a single dead zone along the second direction, or 10% to 100% of the maximum dimension of a single effective zone along the second direction, or 10% to 100% of the sum of the maximum dimensions of adjacent effective zone and dead zone along the second direction. And / or, the maximum dimension of the second groove along the second direction is 10% to 100% of the maximum dimension of a single dead zone along the second direction, or 10% to 100% of the maximum dimension of a single effective zone along the second direction, or 10% to 100% of the sum of the maximum dimensions of adjacent effective zone and dead zone along the second direction; the second direction is perpendicular to the first direction.

7. The solar cell module according to claim 5, wherein The maximum dimension of the first groove along the first direction is greater than or equal to 10% of the maximum dimension of the substrate along the first direction, and less than or equal to 70% of the maximum dimension of the substrate along the first direction. And / or, the maximum dimension of the second groove along the first direction is greater than or equal to 10% of the maximum dimension of the encapsulation layer along the first direction, and less than or equal to 70% of the maximum dimension of the encapsulation layer along the first direction.

8. The solar cell module according to claim 5, wherein The maximum dimension of the first groove along the third direction is equal to the maximum dimension of the dead zone along the third direction. And / or the maximum dimension of the second groove along the third direction is equal to the maximum dimension of the dead zone along the third direction; the third direction is perpendicular to the first direction and perpendicular to the second direction.

9. The solar cell module according to any one of claims 1 to 8, characterized by, The cross section of the first groove and / or the second groove can be one or more of V-shaped, arc-shaped and rectangular.

10. The solar cell module according to claim 1, characterized by, The battery cell comprises a first conductive layer, a light-absorbing layer and a second conductive layer stacked along a first direction, wherein the light-absorbing layer comprises a perovskite material.

11. An electrical device, characterized by The solar cell module comprises the solar cell module according to any one of claims 1 to 10.

12. A power generation apparatus characterized by comprising: The solar cell module comprises the solar cell module according to any one of claims 1 to 10.

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