Solar cell module, photovoltaic equipment, power utilization device and power generation device

Abstract

The utility model relates to a solar cell module, photovoltaic equipment, a power utilization device and a power generation device, a second sealing layer is arranged on the periphery of a first sealing layer, and the second sealing layer is connected with a substrate and a cover body, so that a closed packaging structure is formed on the periphery of the first sealing layer, and effective protection is provided for the periphery of a light conversion part. According to the design, the second sealing layer is matched with the first sealing layer, double protection can be provided for the periphery of the light conversion component, the sealing performance of the periphery of the light conversion component is enhanced, the water and oxygen blocking capacity of the periphery of the solar cell module is improved, and the stability of the module is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar cell, in particular to a solar cell module, a photovoltaic device, a power consumption device and a power generation device. BACKGROUND

[0002] The solar cell module refers to a device for converting light energy into electric energy by using photovoltaic effect, realizing green and sustainable development of energy. The solar cell module needs to be encapsulated during preparation to prevent water and oxygen from penetrating and affecting the stability of the internal structure of the solar cell module. However, due to the structure design of the traditional solar cell module, the water and oxygen resistance of the periphery of the solar cell module is insufficient, which affects the stability of the module. SUMMARY

[0003] Therefore, it is necessary to provide a solar cell module, a photovoltaic device, a power consumption device and a power generation device to improve the water and oxygen resistance of the periphery and improve the stability of the module.

[0004] In a first aspect, the present application provides a solar cell module, which comprises: a cell body comprising a first sealing layer and a substrate, a light conversion component and a cover body which are sequentially stacked, the first sealing layer being arranged between the substrate and the cover body and surrounding the periphery of the light conversion component; and a second sealing layer surrounding the periphery of the first sealing layer and connected to the substrate and the cover body respectively.

[0005] The solar cell module described above has the second sealing layer surrounding the periphery of the first sealing layer, and the second sealing layer is connected to the substrate and the cover body respectively, so that the periphery of the first sealing layer forms a closed encapsulation structure to provide effective protection for the periphery of the light conversion component. In this way, the second sealing layer cooperates with the first sealing layer to provide double protection for the periphery of the light conversion component, enhance the sealing performance of the periphery of the light conversion component, thereby improving the water and oxygen resistance of the periphery of the solar cell module, which is conducive to improving the stability of the module.

[0006] In some embodiments, the solar cell module further comprises a protective member surrounding the periphery of the second sealing layer and connected to the substrate and the cover body through the second sealing layer. In this way, the protective member is introduced to improve the water and oxygen resistance of the solar cell module.

[0007] In some embodiments, the protective member comprises a first protective end at one end in the thickness direction of the solar cell module, the first protective end extending to a circumferential end face of the cover body in the thickness direction of the solar cell module and surrounding the periphery of the circumferential end face of the cover body. In this way, the first protective end surrounds the periphery of the circumferential end face of the cover body to form a protective effect on the periphery of the cover body, reduce the risk of breakage of the cover body due to impact, and improve the stability of the structure.

[0008] In some embodiments, the protector includes a second protective end at one end along the thickness direction of the solar cell module, the second protective end extends to the circumferential end surface of the base along the thickness direction of the solar cell module and surrounds the outer periphery of the circumferential end surface of the base. In this way, the second protective end surrounds the outer periphery of the circumferential end surface of the base, which protects the outer periphery of the base and reduces the risk of breakage of the base due to impact, thereby improving the stability of the structure.

[0009] In some embodiments, the two ends of the protector along the thickness direction of the solar cell module correspond to the two surfaces of the light conversion component along the thickness direction of the solar cell module, respectively. In this way, the protector provides better protection for the light conversion component.

[0010] In some embodiments, the two ends of the protector along the thickness direction of the solar cell module do not correspond to the two surfaces of the cell body along the thickness direction of the solar cell module, respectively. In this way, it is convenient for subsequent lamination operation to be stable.

[0011] In some embodiments, the height of the protector along the thickness direction of the solar cell module is h1, and the height of the cell body along the thickness direction of the solar cell module is h2, wherein 0mm≤h2-h1≤6.4mm. In this way, the difference between the height of the cell body and the height of the protector is controlled between 0mm and 6.4mm, so that the lamination operation of the cell body is stable; at the same time, the cell body is effectively protected.

[0012] In some embodiments, h2-h1 also satisfies the condition: 0mm≤h2-h1≤0.5mm. In this way, the difference between the height of the cell body and the height of the protector is controlled between 0mm and 0.5mm, which further effectively balances the lamination operability and protection of the cell body.

[0013] In some embodiments, the maximum thickness of the protector is h3, wherein 0.1mm≤h3≤5mm. In this way, the maximum thickness of the protector is controlled between 0.1mm and 5mm, which controls the circumferential size of the solar cell module while satisfying the effective water-oxygen blocking protection, and is conducive to improving the utilization of the effective space of the solar cell module.

[0014] In some embodiments, the protector includes a plurality of side plates, all of which surround the outer periphery of the second sealing layer in turn, and the end surface of one of the two adjacent side plates abuts on the plate surface of the other. In this way, a plurality of side plates are introduced to facilitate the protector to surround the second sealing layer and achieve effective protection; at the same time, the end surface of one of the two adjacent side plates abuts on the plate surface of the other, which facilitates the mutual close combination between the side plates and is conducive to improving the water-oxygen blocking ability of the solar cell module.

[0015] In some embodiments, the second sealing layer is attached to the circumferential end surface of the base and the circumferential end surface of the cover respectively, and the protective piece is attached to the side of the second sealing layer away from the first sealing layer. In this way, the protective piece, the second sealing layer and the battery body are tightly combined in a fitted manner, further improving the water and oxygen resistance of the solar cell module.

[0016] In some embodiments, the circumferential end surface of the cover includes a first end surface, and the circumferential end surface of the base includes a second end surface. The first end surface and the second end surface are both inclined with respect to the thickness direction of the solar cell module, and the two ends of the first end surface and the second end surface away from each other are both inclined toward the side of the protective piece. In this way, the first end surface and the second end surface are arranged to be inclined to each other, which facilitates the tight combination of the second sealing layer with the base and the cover respectively, and also helps to improve the safety performance of the creeping.

[0017] In some embodiments, the second sealing layer includes a first branch and a second branch connected to each other, the first branch is attached to the first end surface, and the second branch is attached to the second end surface. In this way, the second sealing layer is designed as the first branch and the second branch, which makes the second sealing layer better fit on the circumferential end surface of the base and the cover, and helps to improve the compactness of the structure.

[0018] In some embodiments, the light conversion component includes a perovskite light-absorbing layer, and the perovskite light-absorbing layer is arranged between the base and the cover. In this way, it is convenient to obtain a perovskite solar cell module with good water and oxygen resistance.

[0019] In a second aspect, the present application provides a photovoltaic device, which includes the solar cell module of any one of the above.

[0020] In a third aspect, the present application provides an electric device, which includes the solar cell module of any one of the above.

[0021] In a fourth aspect, the present application provides a power generation device, which includes the solar cell module of any one of the above. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Structure diagram of the solar cell module described in some embodiments of the present application.

[0023] Figure 2 Structure diagram of the solar cell module described in some embodiments of the present application. Figure 1 Structure diagram of the solar cell module described in some embodiments of the present application.

[0024] Figure 3 Structure diagram of the solar cell module described in some embodiments of the present application.

[0025] 100. Solar cell module; 10. Cell body; 11. Substrate; 111. Second end surface; 12. Light conversion member; 13. Cover; 131. First end surface; 14. Adhesive film; 20. First sealing layer; 30. Guard; 31. First guard end; 32. Second guard end; 33. First lamination surface; 34. Second lamination surface; 35. Side plate; 40. Second sealing layer; 41. First support portion; 42. Second support portion; X. Thickness direction. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways from those described herein without departing from the scope of the present application, and it is understood that similar improvements can be made by those skilled in the art without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0029] In the present application, unless specifically defined and limited otherwise, if there is a description of "mounting", "connecting", "connecting", "fixing" and the like, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless specifically defined and limited otherwise, if there is a description of "mounting", "connecting", "connecting", "fixing" and the like, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and are not the only embodiment.

[0032] With the rapid development of science and technology, the development of new energy has made breakthroughs, such as solar cells represented by perovskite and organic thin film batteries, which have made revolutionary progress. In order to reduce the risk of material degradation caused by the contact of the internal structure of the solar cell module with water and oxygen from the outside world, during the preparation of the solar cell module, the internal structure of the solar cell module generally needs to be encapsulated, such as the periphery and top of the perovskite light-absorbing layer. When the traditional solar cell module is encapsulated around, butyl glue or other organic glue is usually used for periphery sealing to achieve the effect of blocking water and oxygen from penetrating into the inside.

[0033] However, this encapsulation method of setting butyl glue or other organic glue around has limited water and oxygen blocking ability, resulting in the risk of contact of the solar cell module with water and oxygen, thereby causing the instability of the structure of the module.

[0034] Based on this, in order to solve the problem that the water and oxygen blocking ability of the traditional solar cell module is insufficient and affects the stability of the module, the application provides a solar cell module, a second sealing layer is arranged around the outer periphery of the first sealing layer, and the second sealing layer is connected with the base and the cover respectively, so that the outer periphery of the first sealing layer forms a closed packaging structure, and the outer periphery of the light conversion component is effectively protected. By designing the second sealing layer in cooperation with the first sealing layer, double protection can be provided for the four sides of the light conversion component, the sealing performance of the outer periphery of the light conversion component is enhanced, the water and oxygen blocking ability of the four sides of the solar cell module is improved, and the stability of the module is improved.

[0035] The application provides a power consumption device using a battery as a power supply. The power consumption device can be, but is not limited to, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship, a spacecraft, a space station, and the like. The electric toy can include a fixed or mobile electric toy, for example, a game machine, an electric automobile toy, an electric ship toy, an electric aircraft toy, and the like.

[0036] According to some embodiments of the application, the application provides a solar cell module 100, which includes a battery body 10 and a second sealing layer 40. The battery body 10 includes a first sealing layer 20 and a base 11, a light conversion component 12, and a cover 13 which are sequentially stacked. The first sealing layer 20 is arranged between the base 11 and the cover 13 and surrounds the outer periphery of the light conversion component 12. The second sealing layer 40 surrounds the outer periphery of the first sealing layer 20 and is connected with the base 11 and the cover 13 respectively.

[0037] The base 11 is also called a substrate or a substrate. It can be a transparent structure, for example, but is not limited to, glass, tempered glass, quartz, organic flexible material, and the like. Of course, it can also be transparent conductive glass, stainless steel conductive flexible substrate, polyethylene glycol terephthalate (PET) conductive flexible substrate, and the like. At the same time, the base 11 can be used as a light entrance side for light to pass through and act on the light conversion component 12.

[0038] The light conversion component 12 refers to a component in the battery body 10 that converts light energy into electrical energy. For ease of understanding, taking the perovskite solar cell assembly 100 as an example, the light conversion component 12 can be a single-junction perovskite structure, which can include a transparent conductive layer, an electron transport layer, a perovskite light-absorbing layer, a hole transport layer, and a metal electrode. Of course, the light conversion component 12 can also be a laminated structure, for example, the perovskite solar cell can be laminated with, but not limited to, a dye-sensitized solar cell, a perovskite solar cell, and other solar cells containing organic components. It can also be laminated with inorganic solar cells including, but not limited to, silicon solar cells, copper indium gallium selenide solar cells, gallium arsenide solar cells, cadmium telluride solar cells, and the like.

[0039] The cover body 13 refers to a structure covering the side of the light conversion component 12 away from the substrate 11, which cooperates with the substrate 11 to form a protection structure on both sides of the light conversion component 12 along the thickness direction X, blocking the transmission of water and oxygen along the thickness direction X to the light conversion component 12. The cover body 13 can be, but is not limited to, organic glass, inorganic glass, and the like. In addition, in some embodiments, in order to improve insulation protection, an adhesive film 14 can be provided between the light conversion component 12 and the cover body 13, so that the adhesive film 14 covers the bus structure on the light conversion component 12.

[0040] It should be noted that the thickness direction X of the solar cell assembly 100 in the present embodiment is a directional concept introduced when the solar cell assembly 100 is in a flat state, therefore, if the solar cell assembly 100 is a flexible and curved battery, the solar cell assembly 100 can be flattened again to determine the corresponding direction of the thickness direction X on the solar cell assembly 100.

[0041] The first sealing layer 20 refers to an insulating structure surrounding the outer periphery of the light conversion component 12, which is sandwiched between the substrate 11 and the cover body 13, and can encapsulate the light conversion component 12 between the substrate 11, the cover body 13, and the first sealing layer 20, thereby providing protection for the light conversion component 12 against water and oxygen. In the preparation process, the first sealing layer 20 can be provided in various ways, for example, the light conversion component 12 can be formed on the substrate 11; the periphery of the light conversion component 12 is edge cleaned to expose a portion of the substrate 11, so that a clear edge region is formed around the light conversion component 12; and the first sealing layer 20 is coated in the clear edge region.

[0042] In some embodiments, the material of the first sealing layer 20 also has various options, for example, it can be, but is not limited to, one or more of epoxy-based encapsulation glue, silicone-based encapsulation glue, polyurethane encapsulation glue, ultraviolet light-curable encapsulation glue, ethylene-vinyl acetate copolymer, polyvinyl butyral, ethylene octene copolymer, polyisobutylene, and polyolefin-based encapsulation glue.

[0043] The second sealing layer 40 refers to a structure sealing the outer periphery of the battery body 10. The second sealing layer 40 is connected with the base 11 and the cover 13 respectively to achieve tight combination. In some embodiments, the second sealing layer 40 is attached to the circumferential end face of the base 11, and is also attached to the circumferential end face of the cover 13.

[0044] The material of the second sealing layer 40 can be consistent with the material of the first sealing layer 20, or can be different. The material of the second sealing layer 40 can be, but is not limited to, one or more of epoxy encapsulation glue, silicone encapsulation glue, polyurethane encapsulation glue, ultraviolet light curing encapsulation glue, ethylene-vinyl acetate copolymer, polyvinyl butyral, ethylene octene copolymer, polyisobutylene, and polyolefin encapsulation glue.

[0045] The circumferential end face of the base 11 and the circumferential end face of the cover 13 can be understood as the end face of the base 11 and the end face of the cover 13 around the thickness direction X of the solar cell module 100 respectively. The circumferential end face of the base 11 and the circumferential end face of the cover 13 can be designed as a face parallel to the thickness direction X, or can be designed as a face inclined to the thickness direction X.

[0046] In this way, the second sealing layer 40 cooperates with the first sealing layer 20 to provide double protection for the four sides of the light conversion component 12, enhance the sealing performance of the four sides of the light conversion component 12, thereby improving the water and oxygen resistance of the four sides of the solar cell module 100, and facilitating the improvement of the stability of the module.

[0047] According to some embodiments of the present application, the solar cell module 100 further comprises a protective piece 30, which surrounds the outer periphery of the second sealing layer 40 and is connected with the base 11 and the cover 13 through the second sealing layer 40.

[0048] The protective piece 30 refers to a structure surrounding the outer periphery of the second sealing layer 40 and being connected with the base 11 and the cover 13 through the second sealing layer 40. The protective piece 30 surrounds the outer periphery of the second sealing layer 40 to form a water and oxygen resistance effect, and the material thereof can be selected in various ways, such as, but not limited to, float glass, semi-tempered glass, tempered glass, and ultra-thin glass. It should be noted that the protective piece 30 is a structure protecting the outer periphery of the second sealing layer 40, and is not the outermost frame structure of the solar cell module 100. For example, in some embodiments, the solar cell module further comprises a frame surrounding the side of the protective piece 30 away from the second sealing layer 40.

[0049] The protective member 30 is indirectly connected with the base 11 and the cover 13 through the second sealing layer 40 respectively, in addition to being surrounded by the second sealing layer 40 outside the periphery of the first sealing layer 20, so as to achieve close combination. In some embodiments, one end of the protective member 30 along the thickness direction X of the solar cell module 100 is attached to the circumferential end face of the base 11 through the second sealing layer 40, and the other end of the protective member 30 is also attached to the circumferential end face of the cover 13 through the second sealing layer 40.

[0050] In addition, the second sealing layer 40 is arranged between the protective member 30 and the cell body 10, and the protective member 30 and the second sealing layer 40 can effectively improve the insulation of the solar cell module 100 in the direction perpendicular to the thickness direction X. At this time, the solar cell module 100 of the present embodiment can effectively improve the insulation in the direction perpendicular to the thickness direction X compared with the structure of the conventional solar cell module 100, so that the creepage distance in the thickness direction X can be considered when considering the safety of the creepage, that is, the width of the first sealing layer 20 in the direction perpendicular to the thickness direction X + the thickness of the base 11 or the cover 13. Since the thickness of the base 11 or the cover 13 is generally large, the width of the first sealing layer 20 in the direction perpendicular to the thickness direction X can be designed to be relatively small, so as to meet the creepage requirement. At the same time, after the width of the first sealing layer 20 is reduced, the area available for the light conversion component 12 can be improved, which is beneficial to improve the power generation area of the solar cell module 100.

[0051] In this way, the protective member 30 is introduced to improve the water and oxygen resistance of the solar cell module 100, and at the same time, the size of the first sealing layer 20 can be reduced to meet the safety requirement of the creepage, which is beneficial to improve the area available for the light conversion component 12, thereby improving the power generation area of the solar cell module 100.

[0052] According to some embodiments of the present application, optionally, one end of the protective member 30 along the thickness direction X of the solar cell module 100 comprises a first protective end 31, the first protective end 31 extends to the circumferential end face of the cover 13 along the thickness direction X of the solar cell module 100 and surrounds the periphery of the circumferential end face of the cover 13.

[0053] When the protective member 30 surrounds the periphery of the second sealing layer 40, the first protective end 31 of the protective member 30 along the thickness direction X can extend to the opposite side of the circumferential end face of the cover 13, so that a part of the protective member 30 surrounds the periphery of the circumferential end face of the cover 13 and forms a protection for the circumferential end face of the cover 13. In this way, in the unframed state, if a collision occurs, the protective member 30 protects the front of the cover 13, so as to resist the collision of the cover 13 and reduce the risk of breakage of the cover 13 due to the collision.

[0054] The first protective end 31 of the protective piece 30 surrounds the outer periphery of the circumferential end surface of the cover 13, and can be flush with a surface of the cover 13 facing away from the light conversion component 12, or be located between two surfaces of the cover 13 along the thickness direction X of the solar cell module 100.

[0055] In this way, the first protective end 31 surrounds the outer periphery of the circumferential end surface of the cover 13, and forms a protective effect on the outer periphery of the cover 13, reduces the risk of the cover 13 being broken due to impact, and improves the stability of the structure.

[0056] According to some embodiments of the present application, optionally, one end of the protective piece 30 along the thickness direction X of the solar cell module 100 comprises a second protective end 32, and the second protective end 32 extends to the circumferential end surface of the base 11 along the thickness direction X of the solar cell module 100 and surrounds the outer periphery of the circumferential end surface of the base 11.

[0057] When the protective piece 30 surrounds the outer periphery of the second sealing layer 40, the second protective end 32 of the protective piece 30 along the thickness direction X can extend to the circumferential end surface of the base 11, so that a part of the protective piece 30 surrounds the outer periphery of the circumferential end surface of the base 11 and forms a protective effect on the circumferential end surface of the base 11. In this way, in the unframed state, if impact occurs, the protective piece 30 protects the front of the base 11, and the base 11 is protected from impact, reducing the risk of the base 11 being broken due to impact.

[0058] The second protective end 32 of the protective piece 30 surrounds the outer periphery of the circumferential end surface of the base 11, and can be flush with a surface of the base 11 facing away from the light conversion component 12, or be located between two surfaces of the base 11 along the thickness direction X of the solar cell module 100.

[0059] In some embodiments, the first protective end 31 and the second protective end 32 are respectively two ends of the protective piece 30 along the thickness direction X of the solar cell, the first protective end 31 is located at the outer periphery of the circumferential end surface of the cover 13,

[0060] In this way, the second protective end 32 surrounds the outer periphery of the circumferential end surface of the base 11, and forms a protective effect on the outer periphery of the base 11, reduces the risk of the base 11 being broken due to impact, and improves the stability of the structure.

[0061] According to some embodiments of the present application, optionally, the two ends of the protective piece 30 along the thickness direction X of the solar cell module 100 respectively correspond to two surfaces of the light conversion component 12 along the thickness direction X of the solar cell module.

[0062] The two ends of the protection piece 30 can respectively extend beyond the two surfaces of the light conversion component 12, that is, completely cover one end of the light conversion component 12, so that the protection piece 30 can better protect the light conversion component 12. Moreover, the two ends of the protection piece 30 can respectively extend to the cover 13 and the base 11, and play a role in impact protection. In some embodiments, the protection piece 30 can completely cover one side of the light conversion component 12 and the adhesive film 14 in the light conversion component 12.

[0063] In this way, the protection piece 30 can better protect the light conversion component 12.

[0064] According to some embodiments of the present application, optionally, the two ends of the protection piece 30 along the thickness direction X of the solar cell module 100 respectively correspond to not beyond the two surfaces of the cell body 10 along the thickness direction X of the solar cell module.

[0065] The two ends of the protection piece 30 respectively do not beyond the two surfaces of the cell body 10 along the thickness direction X of the solar cell module, so that the assembled protection piece 30 will not protrude from the surface of the cell body 10, for example, one end of the protection piece 30 is flush with or lower than the corresponding surface of the cell body 10. In this way, stable pressure can be applied to the cell body 10 during subsequent lamination.

[0066] In this way, the subsequent lamination operation can be stably performed.

[0067] According to some embodiments of the present application, optionally, the height of the protection piece 30 along the thickness direction X of the solar cell module 100 is h1, and the height of the cell body 10 along the thickness direction X of the solar cell module 100 is h2, wherein 0mm≤h2-h1≤6.4mm.

[0068] The height of the protection piece 30 is less than the height of the cell body 10, so that the end of the protection piece 30 can protrude from the surface of the cell body 10, thereby enabling the subsequent lamination to be stably performed. However, the difference between the two should not be too large, otherwise the protection of the protection piece 30 to the circumferential end surface of the base 11 or the cover 13 will be weakened.

[0069] Therefore, the difference between the two is controlled to be between 0mm and 6.4mm, for example, but not limited to 0mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 6.4mm, etc.

[0070] In this way, the difference between the height of the cell body 10 and the height of the protection piece 30 is controlled to be between 0mm and 6.4mm, so that the lamination operation of the cell body 10 can be stably performed; and the cell body 10 is effectively protected.

[0071] According to some embodiments of the present application, optionally, h2-h1 also satisfies the condition: 0mm≤h2-h1≤0.5mm.

[0072] The difference between the height of the battery body 10 and the height of the protective piece 30 is controlled between 0mm and 0.5mm, such as but not limited to 0mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, etc.

[0073] In this way, the difference between the height of the battery body 10 and the height of the protective piece 30 is controlled between 0mm and 0.5mm, further effectively balancing the lamination operability and protection of the battery body 10.

[0074] According to some embodiments of the present application, optionally, the maximum thickness of the protective piece 30 is h3, wherein 0.1mm≤h3≤5mm.

[0075] The protective piece 30 can be designed as an equal-thickness structure, or as a structure with varying thickness. When the protective piece 30 is a structure with varying thickness, the maximum thickness thereof can be controlled between 0.1mm and 5mm, such as but not limited to 0.1mm, 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.1mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 5mm, etc.

[0076] In this way, the maximum thickness of the protective piece 30 is controlled between 0.1mm and 5mm, which controls the circumferential dimension of the solar cell module 100 while satisfying effective water-oxygen blocking protection, and is conducive to improving the utilization of the effective space of the solar cell module 100.

[0077] According to some embodiments of the present application, optionally, the protective piece 30 includes a plurality of side plates 35, all of the side plates 35 successively surround the outer periphery of the second sealing layer 40, and the end face of one of the two adjacent side plates 35 abuts on the plate face of the other.

[0078] The side plate 35 refers to a structure located at the outer periphery of the first sealing layer 20. When the solar cell module 100 is a quadrangular prism structure, the number of side plates 35 can be four, and the four side plates 35 are respectively arranged on the four sides of the solar cell module 100. In the two adjacent side plates 35, the end face of one side plate 35 can be abutted on the plate face of the other side plate 35 to realize mutual lapping. In some embodiments, in the two adjacent side plates 35, the end face of one side plate 35 is abutted on the plate face of the other side plate 35 through a part of the second sealing layer 40.

[0079] In addition, the edges of the side plates 35 can be chamfered to remove the micro-cracks and eliminate stress concentration, thereby increasing the strength and reliability of the protective member 30.

[0080] In this way, the plurality of side plates 35 are arranged to surround the second sealing layer 40, thereby achieving effective protection. In addition, the end surface of one of the adjacent side plates 35 abuts against the surface of the other side plate 35, thereby facilitating close combination of the side plates 35 and improving the water and oxygen resistance of the solar cell module 100.

[0081] According to some embodiments of the present application, the second sealing layer 40 is arranged on the circumferential end surface of the base 11 and the circumferential end surface of the cover 13, and the protective member 30 is arranged on the side of the second sealing layer 40 away from the first sealing layer 20.

[0082] After the second sealing layer 40 surrounds the first sealing layer 20, the second sealing layer 40 is arranged on the circumferential end surface of the base 11 and the circumferential end surface of the cover 13, thereby achieving close combination of the second sealing layer 40 with the base 11 and the cover 13. In addition, the protective member 30 is arranged on the second sealing layer 40, so that the protective member 30 is first impacted when the solar cell module 100 is impacted. In addition, the second sealing layer 40 can also serve as a buffer between the protective member 30 and the base 11 and the cover 13, thereby reducing the impact on the base 11 and the cover 13.

[0083] It should be noted that the protective member 30 is arranged on the second sealing layer 40, and a part of the protective member 30 is arranged on the side of the circumferential end surface of the second sealing layer 40 away from the base 11, and another part of the protective member 30 is arranged on the side of the circumferential end surface of the second sealing layer 40 away from the cover 13.

[0084] In addition, the circumferential end surface of the base 11 and the circumferential end surface of the cover 13 can be designed as a surface parallel to the thickness direction X, or can be designed as a surface inclined relative to the thickness direction X. When the circumferential end surface of the base 11 and the circumferential end surface of the cover 13 are designed as a surface inclined relative to the thickness direction X, the side surface of the second sealing layer 40 away from the protective member 30 can also be designed as a surface inclined relative to the thickness direction X. In this case, the side surface of the second sealing layer 40 facing the protective member 30 can be designed as a flat surface, or can be designed as an inclined surface, etc.

[0085] In this way, the protective member 30, the second sealing layer 40 and the cell body 10 are arranged in close combination, thereby further improving the water and oxygen resistance of the solar cell module 100.

[0086] According to some embodiments of the present application, optionally, the circumferential end surface of the cover 13 comprises a first end surface 131, and the circumferential end surface of the base 11 comprises a second end surface 111, both the first end surface 131 and the second end surface 111 are inclined to the thickness direction X of the solar cell module 100, and both ends of the first end surface 131 and the second end surface 111 away from each other are inclined to one side of the protective piece 30.

[0087] Both ends of the first end surface 131 and the second end surface 111 away from each other are inclined to one side of the protective piece 30, which means that the distance between the first end surface 131 and the second end surface 111 gradually increases in the direction from the first sealing layer 20 to the protective piece 30. The first end surface 131 and the second end surface 111 are respectively designed as inclined surfaces, which can increase the bonding area between the second sealing layer 40 and the base 11 and the cover 13 respectively.

[0088] At the same time, when considering the safety requirement of creepage, the first end surface 131 and the second end surface 111 are designed to be inclined, which is convenient for prolonging the creepage distance, which not only helps to improve the safety of creepage, but also helps to further shorten the size of the first sealing layer 20.

[0089] In this way, the first end surface 131 and the second end surface 111 are arranged to be inclined to each other, which is convenient for the second sealing layer 40 to be tightly combined with the base 11 and the cover 13 respectively; at the same time, it is also beneficial to improve the safety performance of creepage.

[0090] According to some embodiments of the present application, optionally, the second sealing layer 40 comprises a first branch 41 and a second branch 42 connected to each other, the first branch 41 is attached to the first end surface 131, and the second branch 42 is attached to the second end surface 111.

[0091] The first branch 41 and the second branch 42 respectively refer to the part of the structure of the second sealing layer 40 attached to the base 11 and the cover 13 respectively. The first branch 41 and the second branch 42 can be an integrated structure. Among them, the first branch 41 and the second branch 42 can be arranged at an angle. In some embodiments, in order to better attach the protective piece 30 to the second sealing layer 40, the side surface of the protective piece 30 facing the second sealing layer 40 comprises a first attachment surface 33 and a second attachment surface 34 at an angle to each other, the first attachment surface 33 is attached to the first branch 41, and the second attachment surface 34 is attached to the second branch 42.

[0092] In this way, the second sealing layer 40 is designed as the first branch 41 and the second branch 42, so that the second sealing layer 40 can be better attached to the circumferential end surface of the base 11 and the cover 13, which is beneficial to improve the compactness of the structure.

[0093] According to some embodiments of the present application, optionally, the light conversion component 12 comprises a perovskite light-absorbing layer, and the perovskite light-absorbing layer is arranged between the base 11 and the cover 13.

[0094] The material of the perovskite light-absorbing layer satisfies the chemical formula ABX3 or A2CDX6; wherein A is an inorganic cation or an organic ammonium cation or a mixture of the two, and can be at least one of formamidinium ion (FA), methylammonium ion (MA) and Cs; B is an inorganic metal cation, and can be one or more of Pb 2+ , Sn 2+ , Fe 2+ , Mn 2+ , Ni 2+ , Ge 2+ , Co 2+ and Sb 2+ ; C is a noble metal cation, and is commonly Ag + ; D is a heavy metal or rare metal cation, and can be at least one of bismuth cation Bi 3+ , antimony cation Sb 3+ , and indium cation In 3+ ; X is a halogen or pseudo-halogen anion, and can be at least one of Cl - , Br - , I - , SCN - , BF4 - .

[0095] In some embodiments, the light conversion component 12 further comprises a first electrode layer, a first transport layer, a second transport layer, and a second electrode layer. The first electrode layer, the first transport layer, the perovskite light absorbing layer, the second transport layer, and the second electrode layer are stacked in sequence along the thickness direction X of the solar cell module 100. The first transport layer and the second transport layer respectively function to transport electrons or holes. The first transport layer can be an electron charge transport layer, and the second transport layer can be a hole charge transport layer, in which case the solar cell module 100 is of nip type (normal structure). Alternatively, the first transport layer can be a hole charge transport layer, and the second transport layer can be an electron charge transport layer, in which case the solar cell module 100 is of pin type (inverted structure). The electron charge transport layer, in addition to its function of transporting electrons, can also function to block holes. The material of the electron charge transport layer can be selected from at least one of the following: [6,6]-phenyl-C61-butyric acid methyl ester, C60, cyano-containing polyphenylacetylene, boron-containing polymer, bathocuproin, red phenanthroline, aluminum quinolinol, oxadiazole compound, benzimidazole compound, naphthalene tetracarboxylic acid compound, perylene derivative, phosphine oxide compound, phosphine sulfide compound, fluorine-containing phthalocyanine, titanium oxide (TiO2), zinc oxide (ZnO), tin oxide (SnO2), indium oxide (In2O3), gallium oxide (Ga2O3), tin sulfide (SnS), indium sulfide (In2O3), lithium fluoride (LiF), sodium fluoride (NaF), magnesium fluoride (MgF2), and zinc sulfide (ZnS). The hole charge transport layer, in addition to its function of transporting holes, can also block electrons. The material of the hole charge transport layer can include at least one of the following: thiophene, phthalocyanine, porphyrin, 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene, molybdenum oxide (MoO3), vanadium oxide (V2O5), tungsten oxide (WO3 and / or WO2), nickel oxide (NiO), copper oxide (CuO), tin oxide (SnO2), molybdenum sulfide (MoS2), tungsten sulfide (WS2), copper sulfide (CuS), tin sulfide (SnS), cuprous thiocyanate (CuSCN), copper iodide (CuI), fluorine-containing phosphonic acid, carbonyl-containing phosphonic acid, carbon nanotube, and graphene.

[0096] The first electrode layer and the second electrode layer are respectively structures for charge transport of the solar cell module 100. The first electrode layer can be a transparent conductive structure, such as a structure having a transmittance of greater than 80% in the visible light range (wavelength 380 nm~760 nm corresponding to energy 3.26 eV~1.63 eV), and a high conductivity with a resistivity of less than 1×10 -3Ω*cm (Ohm*cm). The material has multiple options, such as: can be but not limited to indium doped tin oxide (indium doped tin oxide, ITO), fluorine doped tin oxide (fluorine doped tin oxide, FTO) and aluminum doped zinc oxide (aluminum doped zinc oxide, AZO), lanthanide metal doped indium oxide, antimony doped tin oxide, boron doped zinc oxide (BZO), indium zinc oxide (IZO), gallium zinc oxide (GZO), indium tungsten oxide (IWO) and the like. The second electrode layer can be a metal structure, such as: can be but not limited to Ag, Au, Pt, Cu and the like.

[0097] In this way, the perovskite solar cell module 100 with good water oxygen blocking ability can be obtained.

[0098] According to some embodiments of the present application, the present application provides a photovoltaic device, which comprises the solar cell module 100 of any one of the above.

[0099] According to some embodiments of the present application, the present application provides an electric device, which comprises the solar cell module 100 of any one of the above.

[0100] According to some embodiments of the present application, the present application provides a power generation device, which comprises the solar cell module 100 of any one of the above.

[0101] The power generation device refers to a power generation system for directly converting solar radiation energy into electric energy by photovoltaic effect, which is divided into stand-alone photovoltaic power generation system (Stand-alone PV System) and grid-connected photovoltaic power generation system (Grid-connected PV System). The stand-alone photovoltaic power generation system is composed of a solar photovoltaic array composed of a photovoltaic module, a battery pack, a charge controller, a power electronic converter (inverter), a load and the like. The grid-connected photovoltaic power generation system is composed of a photovoltaic array, a high-frequency DC / DC boost circuit, a power electronic converter (inverter) and a system monitoring part.

[0102] According to some embodiments of the present application, the present application provides a solar cell module 100, which comprises a cell body 10, a second sealing layer 40 and a protective piece 30. The cell body 10 comprises a first sealing layer 20, and a substrate 11, a light conversion component 12 and a cover 13 stacked in sequence. The first sealing layer 20 surrounds the outer periphery of the light conversion component 12, the second sealing layer 40 surrounds the outer periphery of the first sealing layer 20, and the protective piece 30 surrounds the outer periphery of the second sealing layer 40 and is respectively attached to the circumferential end face of the substrate 11 and the circumferential end face of the cover 13 through the second sealing layer 40.

[0103] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0104] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A solar cell module, characterized in that, The solar cell module includes: The battery body includes a first sealing layer and a substrate, a light conversion component and a cover stacked sequentially. The first sealing layer is sandwiched between the substrate and the cover and surrounds the outer periphery of the light conversion component. The solar cell module further includes a second sealing layer, which surrounds the outer periphery of the first sealing layer and is connected to the substrate and the cover, respectively.

2. The solar cell module according to claim 1, characterized in that, The solar cell module also includes a protective component, which surrounds the outer periphery of the second sealing layer and is connected to the substrate and the cover through the second sealing layer.

3. The solar cell module according to claim 2, characterized in that, The protective member includes a first protective end at one end along the thickness direction of the solar cell module. The first protective end extends along the thickness direction of the solar cell module to the circumferential end face of the cover and surrounds the outer periphery of the circumferential end face of the cover.

4. The solar cell module according to claim 2, characterized in that, The protective member includes a second protective end at one end along the thickness direction of the solar cell module. The second protective end extends along the thickness direction of the solar cell module to a circumferential end face facing the substrate and surrounds the outer periphery of the circumferential end face of the substrate.

5. The solar cell module according to claim 2, characterized in that, The protective component extends beyond the two surfaces of the light conversion component along the thickness direction of the solar cell module at both ends.

6. The solar cell module according to claim 5, characterized in that, The protective component has two ends along the thickness direction of the solar cell module, corresponding to the two surfaces of the battery body along the thickness direction of the solar cell module.

7. The solar cell module according to claim 6, characterized in that, The height of the protective component along the thickness direction of the solar cell module is denoted as h1, and the height of the battery body along the thickness direction of the solar cell module is denoted as h2, wherein 0mm≤h2-h1≤6.4mm.

8. The solar cell module according to claim 7, characterized in that, The condition that h2-h1 also satisfies is: 0mm≤h2-h1≤0.5mm.

9. The solar cell module according to claim 2, characterized in that, The maximum thickness of the protective component is denoted as h3, where 0.1mm ≤ h3 ≤ 5mm.

10. The solar cell module according to claim 2, characterized in that, The protective component includes multiple side plates, all of which surround the outer periphery of the second sealing layer in sequence, and in two adjacent side plates, the end face of one of them abuts against the surface of the other.

11. The solar cell module according to claim 10, characterized in that, The second sealing layer is respectively attached to the circumferential end face of the substrate and the circumferential end face of the cover, and the protective member is attached to the side of the second sealing layer that faces away from the first sealing layer.

12. The solar cell module according to claim 11, characterized in that, The circumferential end face of the cover includes a first end face, and the circumferential end face of the substrate includes a second end face. Both the first end face and the second end face are inclined relative to the thickness direction of the solar cell module, and the two ends of the first end face and the second end face that are far apart from each other are both tilted toward one side of the protective member.

13. The solar cell module according to claim 12, characterized in that, The second sealing layer includes a first branch and a second branch that are connected to each other, the first branch being attached to the first end face and the second branch being attached to the second end face.

14. The solar cell module according to any one of claims 1-13, characterized in that, The light conversion component includes a perovskite light-absorbing layer, which is disposed between the substrate and the cover.

15. A photovoltaic device, characterized in that, The photovoltaic device includes the solar cell module as described in any one of claims 1-14.

16. An electrical appliance, characterized in that, The electrical device includes a solar cell module as described in any one of claims 1-14.

17. A power generation device, characterized in that, The power generation device includes a solar cell module as described in any one of claims 1-14.

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