Flexible photovoltaic module

Abstract

The utility model discloses a flexible photovoltaic assembly, which relates to the photovoltaic field and comprises a plurality of photovoltaic modules connected through connecting parts, a front plate layer, a battery piece layer and a back plate layer which are sequentially designed in a laminated manner from top to bottom can realize photovoltaic energy storage through photovoltaic conversion, and the photovoltaic modules are connected through connecting parts. The photovoltaic modules can be folded by using the connecting parts, so that the photovoltaic modules can adapt to various complicated curved surfaces and irregular surfaces; the flexible photovoltaic module further comprises a reinforcing structure arranged on the peripheral edge and / or a reinforcing structure arranged on the bottom surface of the back plate layer, and the reinforcing structures can perform structural reinforcement on the flexible photovoltaic module in an edge reinforcing and / or back plate reinforcing mode, so that the flexible photovoltaic module is more difficult to deform; the whole module keeps certain flatness, the aging resistance of the whole flexible photovoltaic module is enhanced, the risks of subfissure damage and the like of the battery piece in the folding use process are reduced, and the service life of the module is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic field especially relates to a flexible photovoltaic module. BACKGROUND

[0002] With the continuous development of photovoltaic technology, the application scene of photovoltaic product is more and more extensive, and flexible photovoltaic technology emerges as the times require, and it is different from traditional rigid photovoltaic board, and the flexible photovoltaic module realized by flexible photovoltaic technology can be folded and bent to a certain extent, and this characteristic can adapt to various complex curved surfaces and irregular surfaces, greatly expanding the application scene of photovoltaic technology. However, the current flexible photovoltaic module usually takes non-woven fabric or oxford cloth as the back supporting material, and these materials have the advantages of light weight, easy movement and convenient installation, but the aging resistance of this cloth connecting material is poor, the service life is short, and material fatigue is prone to occur after repeated folding or bending, resulting in very short service life of the whole flexible photovoltaic module. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a flexible photovoltaic module, and solves the technical problems of poor aging resistance and short service life of the flexible photovoltaic module.

[0004] To solve the above technical problems, the utility model provides a flexible photovoltaic module, which comprises a plurality of adjacent photovoltaic modules, two adjacent photovoltaic modules are connected through a connecting component, and the connecting component is used for realizing the folding between the two adjacent photovoltaic modules.

[0005] A front plate layer is arranged at the top of the photovoltaic module, and the front plate layer comprises a light-transmitting part used for transmitting light;

[0006] A back plate layer is arranged at the bottom of the photovoltaic module;

[0007] A cell sheet layer is arranged between the front plate layer and the back plate layer, and the cell sheet layer is used for photoelectric conversion based on the light provided by the light-transmitting part;

[0008] The reinforcing structure is arranged at the four peripheral edges of the flexible photovoltaic module and / or the reinforcing structure is arranged at the bottom surface of the back plate layer.

[0009] Optionally, it further comprises:

[0010] A first adhesive film layer is arranged between the front plate layer and the cell sheet layer;

[0011] And / or,

[0012] A second adhesive film layer is arranged between the back plate layer and the cell sheet layer;

[0013] The first adhesive film layer and the second adhesive film layer are used to provide buffer protection for the cell piece layer.

[0014] Optionally, the connecting component comprises:

[0015] The first folding part is connected with the front plate layer of one photovoltaic module at the first end and connected with the front plate layer of another photovoltaic module at the second end.

[0016] And / or,

[0017] The second folding part is connected with the back plate layer of one photovoltaic module at the first end and connected with the back plate layer of another photovoltaic module at the second end.

[0018] The first folding part and the second folding part are used to realize the folding between the corresponding two photovoltaic modules.

[0019] Optionally, the connecting component further comprises:

[0020] The folding assembly is used to connect the corresponding cell piece layers of the plurality of photovoltaic modules.

[0021] The folding assembly comprises a fixing part and a bending part, the fixing part is arranged at the outer periphery of the cell piece layer, and the bending part is arranged between any two adjacent fixing parts; the bending part is used to realize the folding between the corresponding two fixing parts.

[0022] Optionally, the connecting component further comprises:

[0023] The connecting conductor is connected with one cell piece layer at the first end and connected with another cell piece layer at the second end, and is used to realize the electrical connection between the two cell piece layers.

[0024] The connecting conductor is arranged between any two adjacent cell piece layers.

[0025] Optionally, a laminating process is used to laminate the front plate layer, the first adhesive film layer, the cell piece layer, the second adhesive film layer and the back plate layer to generate the photovoltaic module.

[0026] Optionally, the front plate layer is a multi-layer composite structure and / or the back plate layer is a multi-layer composite structure.

[0027] The multi-layer composite structure comprises a fluorine film layer and a glass fiber composite layer.

[0028] Optionally, the reinforcing structure comprises a plurality of intermediate reinforcing pieces corresponding to the plurality of cell piece layers one by one; the intermediate reinforcing pieces are arranged around the corresponding cell piece layers.

[0029] Optionally, the reinforcing structure comprises a plurality of L-shaped edge protection structures wrapped around each edge of the flexible photovoltaic assembly, vertical edges of the L-shaped edge protection structures being attached to the side surface of the flexible photovoltaic assembly, and horizontal edges of the L-shaped edge protection structures being attached to the bottom surface of the back plate layer in the flexible photovoltaic assembly.

[0030] Optionally, the reinforcing structure comprises a plurality of back reinforcing sheets corresponding to the plurality of photovoltaic modules, the back reinforcing sheets being arranged on the bottom surface of the back plate layer in the corresponding photovoltaic modules.

[0031] The utility model provides a kind of flexible photovoltaic assembly, including a plurality of photovoltaic modules connected by connecting component, any one photovoltaic module in it includes front plate layer, back plate layer, cell piece layer and reinforcing structure, front plate layer, cell piece layer and back plate layer sequentially laminated from top to bottom can be realized photovoltaic energy storage by photoelectric conversion, each photovoltaic module is connected by connecting component, and the folding between each photovoltaic module can be realized using connecting component, so that it can adapt to various complex curved surface and irregular surface;Flexible photovoltaic assembly further include the reinforcing structure being arranged in the four peripheral edges of flexible photovoltaic assembly and / or the reinforcing structure being arranged in the bottom surface of back plate layer, reinforcing structure can be structurally reinforced to flexible photovoltaic assembly by edge reinforcing and / or back plate reinforcing, so that flexible photovoltaic assembly is more difficult to deform, make component whole keep certain flatness, enhance the aging resistance of entire flexible photovoltaic assembly, reduce the risk such as cell piece hidden crack damage in folding use process, improve the service life of component. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the prior art and the embodiment will be simply introduced below, obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0033] Figure 1 The structural schematic diagram of the flexible photovoltaic assembly provided by the utility model is shown in the figure.

[0034] Figure 2 The area division schematic diagram of the flexible photovoltaic assembly provided by the utility model is shown in the figure.

[0035] Figure 3 The top view schematic diagram of the flexible photovoltaic assembly provided by the utility model when adopting the first reinforcing structure is shown in the figure.

[0036] Figure 4 The layer structure schematic diagram of the flexible photovoltaic assembly corresponding to the first reinforcing structure provided by the utility model is shown in the figure.

[0037] Figure 5 A top view schematic diagram of the flexible photovoltaic module provided by the utility model adopting the second reinforcing structure;

[0038] Figure 6 A layer structure schematic diagram of the flexible photovoltaic module corresponding to the second reinforcing structure provided by the utility model;

[0039] Figure 7 A top view schematic diagram of the flexible photovoltaic module provided by the utility model adopting the third reinforcing structure;

[0040] Figure 8 A layer structure schematic diagram of the flexible photovoltaic module corresponding to the third reinforcing structure provided by the utility model;

[0041] The sign explanation: 1 - photovoltaic module, 2 - connecting part, 11 - front plate layer, 12 - back plate layer, 13 - cell piece layer, 131 - cell piece, 14 - reinforcing structure, 151 - first adhesive film layer, 152 - second adhesive film layer, 16 - wire layer, 22 - second folding part, 23 - connecting conductor. DETAILED DESCRIPTION

[0042] The core of the utility model is to provide a kind of flexible photovoltaic module, reinforcing structure can be by edge reinforcing and / or back plate reinforcing to the structural enhancement of flexible photovoltaic module, to make flexible photovoltaic module more not easy to deform, make the overall assembly keep certain flatness, enhance the aging resistance of entire flexible photovoltaic module, reduce the risk such as cell piece hidden crack damage in folding use process, improve the service life of assembly.

[0043] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described in the following with the drawings in the utility model embodiment, obviously, the described embodiment is part of the embodiment of the utility model, not all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the scope of the utility model protection.

[0044] Please refer to Figure 1 , Figure 1 The structure schematic diagram of the flexible photovoltaic module provided by the utility model;Please refer to Figure 2 , Figure 2 The area division schematic diagram of the flexible photovoltaic module provided by the utility model;To solve the above technical problem, the utility model provides a kind of flexible photovoltaic module, including a plurality of adjacent photovoltaic module 1, two adjacent photovoltaic module 1 is connected by connecting part 2, and connecting part 2 is used to realize the folding between two adjacent photovoltaic module 1;For any photovoltaic module 1, photovoltaic module 1 includes:

[0045] A front plate layer 11 is arranged on the top of the photovoltaic module 1, and the front plate layer 11 comprises a light-transmitting part for transmitting light;

[0046] A back plate layer 12 is arranged on the bottom of the photovoltaic module 1;

[0047] A cell layer 13 is arranged between the front plate layer 11 and the back plate layer 12, and the cell layer 13 is used for photoelectric conversion based on the light provided by the light-transmitting part;

[0048] The reinforcing structure 14 is arranged on the four edges of the flexible photovoltaic assembly and / or on the bottom surface of the back plate layer 12.

[0049] It can be understood that the photovoltaic module 1 comprises the front plate layer 11, the cell layer 13 and the back half layer arranged in sequence from top to bottom. The front plate layer 11 is provided with a light-transmitting part, which can transmit light so that photons can reach the cell layer 13. After the photons are absorbed by the cells in the cell layer 13, the electrons can be excited to jump, thereby generating photo-generated current, and photoelectric conversion is realized to achieve photovoltaic energy storage or photovoltaic power generation, etc. Each photovoltaic module 1 can be used as a power generation module. In order to reduce the risk of hidden crack damage of the cells during folding use, and to adapt to the use requirements of various application scenarios, the flexible photovoltaic assembly is implemented by using a plurality of independent photovoltaic modules 1, and two or more power generation modules are connected by the connecting component 2. When in use, the flexible photovoltaic assembly is unfolded, and when in storage or in a special application scenario, the connecting component 2 can be used for corresponding folding. In order to further avoid the risk of hidden crack damage of the cells and improve the service life, the reinforcing structure 14 is additionally arranged in the flexible photovoltaic assembly. The reinforcing structure 14 is arranged on the edges of the flexible photovoltaic assembly and / or on the bottom surface, and the reinforcing structure 14 is used to enhance the strength of the entire flexible photovoltaic assembly, improve the flatness of the photovoltaic module 1, and avoid the curling of the photovoltaic module 1.

[0050] It should be noted that the connecting component 2 is preferably made of high-strength and corrosion-resistant material. The connecting component 2 is used to connect the adjacent photovoltaic modules 1, and this connection method is simple and reliable, and can ensure the stability and safety of the photovoltaic module 1 during folding and unfolding. The specific implementation mode of the arrangement mode and the use material of the connecting component 2 is not particularly limited herein. When designing the connecting component 2, the requirement of convenient disassembly and replacement can be further considered. The bolt connection, buckle connection and other installation and connection methods convenient for disassembly are adopted, so that the maintenance and upgrading of the flexible photovoltaic assembly become more convenient.

[0051] It is not difficult to understand that the specific implementation modes of the front plate layer 11 and the back plate layer 12, such as the arrangement mode and the material used, are not particularly limited herein. The front plate layer 11 is preferably implemented by using a material with a certain hardness and ensuring good light transmittance. The back plate layer 12 is implemented by using a material with good hardness, such as a high polymer material. The front plate layer 11 and the back plate layer 12 can effectively protect the photovoltaic module 1, especially the battery piece in the battery piece layer 13, prevent external factors such as dust and water vapor from eroding and damaging the internal photovoltaic battery piece and other components, prolong the service life of the photovoltaic module 1, and ensure the safety and reliability of the internal structure of the photovoltaic module 1. A coating layer with corrosion resistance and / or waterproof function can also be added to the front plate layer 11 and the back plate layer 12 according to actual application requirements. The front plate layer 11 is also provided with a light-transmitting portion, which is arranged to reduce optical loss and improve light energy utilization.

[0052] It can be understood that the battery piece layer 13 is implemented by a plurality of interconnected battery pieces. The connection mode and specific implementation mode of the battery piece are not particularly limited herein. The battery piece layer 13 is specifically composed of a plurality of battery pieces connected in series or parallel. The battery piece includes but is not limited to a P-type battery piece, an N-type battery piece, an HJT-type battery piece, a BC-type battery piece, and the like. There are various implementation modes. Considering the battery efficiency and cost, the preferred embodiment of the battery piece is implemented by using a crystalline silicon battery piece.

[0053] It should be noted that the four edges of the flexible photovoltaic assembly include the edges of each photovoltaic module 1 in the flexible photovoltaic assembly. Specifically, the edges of the battery piece layer 13 in the photovoltaic module 1, the edges of the front plate layer 11 in the photovoltaic module 1, and the edges of the back plate layer 12 in the photovoltaic module 1 are not particularly limited herein. The specific implementation mode of the reinforcing structure 14, such as the material used and the arrangement position, is not particularly limited herein. In general, a material with a hardness or strength greater than a certain degree is selected to implement the reinforcing structure 14.

[0054] The utility model provides a kind of light portable flexible photovoltaic, belong to mobile energy product field, it can be applied to outdoor mobile photovoltaic, vehicle-mounted photovoltaic, balcony, courtyard, motor home, container, camping and other scenes. Necessary structural enhancement is carried out to flexible photovoltaic assembly by increasing rigid reinforcing structure 14 in the edge of photovoltaic module 1, increasing the edge protection of photovoltaic module 1, reinforcing back plate and the like, by adjusting preparation process, thin sheet with certain strength is laminated in the edge of photovoltaic module 1 in laminating process, so that the flexible photovoltaic assembly product finally prepared is not easy to deform, wind load is strong, by connecting component 2, multiple photovoltaic modules 1 are connected, the lightness of product is realized, the weight of entire flexible photovoltaic assembly can reach less than or equal to 3kg / m 2The photovoltaic module 1 has the advantages of high degree of folding, easy carrying and storage, improved flexibility and reliability of the photovoltaic system, flexible expansion of the photovoltaic module 1 according to actual needs, wider application range, and reduced risk of hidden cracking damage of the battery piece during folding use.

[0055] On the basis of the above embodiments:

[0056] As an optional embodiment, further comprising:

[0057] The first adhesive film layer 151 is arranged between the front plate layer 11 and the battery piece layer 13.

[0058] And / or,

[0059] The second adhesive film layer 152 is arranged between the back plate layer 12 and the battery piece layer 13.

[0060] The first adhesive film layer 151 and the second adhesive film layer 152 are both used to provide buffer protection for the battery piece layer 13.

[0061] It is not difficult to understand that, in order to further improve the safety and reliability of the photovoltaic module 1, the first adhesive film layer 151 and / or the second adhesive film layer 152 can also be added in the photovoltaic module 1 to play a buffering role, thereby avoiding the impact of external force on the cell sheet layer 13, and also being able to alleviate the influence of thermal stress on the cell sheet, effectively isolating harmful substances such as moisture, oxygen, dust in the external environment, preventing them from invading the inside of the photovoltaic module 1 and the components, causing corrosion, oxidation and other damage to the cell sheet or other components; when the entire flexible photovoltaic assembly is realized by using a laminating process, the first adhesive film layer 151 and the second adhesive film layer 152 can also be used to bond the photovoltaic module 1 and each laminated material in the entire flexible photovoltaic assembly together, the adhesive film melts and fills in the gap between each layer, and after cooling, a high-strength bonding layer is formed, so that the photovoltaic module 1 becomes a compact whole, ensuring that there is no relative displacement or delamination phenomenon between the components during long-term use, and ensuring the structural stability of the assembly. High-quality adhesive film has high light transmittance, which can reduce the reflection and scattering of light inside the assembly, so that more light can pass through the adhesive film to the surface of the cell sheet, improving the light absorption efficiency of the cell sheet, thereby improving the photoelectric conversion efficiency of the photovoltaic module 1. The application does not particularly limit the specific implementation mode of the material of the first adhesive film layer 151 and the second adhesive film layer 152, and a material with good buffering property, high water resistance, strong aging resistance and laminating property is selected for implementation, and it is not limited to using one material for implementation, but can be implemented by using a plurality of materials in combination, which can include but is not limited to one or a combination of EVA (Ethylene-Vinyl Acetate Copolymer, ethylene-vinyl acetate copolymer), POE (Polyolefin Elastomer, polyolefin elastomer), EPE (Expandable Polyethylene, expandable polyethylene), PVB (Polyvinyl Butyral, polyvinyl butyral) and the like.

[0062] Specifically, the first adhesive film layer 151 and / or the second adhesive film layer 152 can be added between the front plate layer 11 and the cell sheet layer 13, and the first adhesive film layer 151 and the second adhesive film layer 152 can play a bonding and buffering role, prevent the cell sheet from being damaged when subjected to external force, further protect the cell sheet, and improve the safety and reliability of the cell sheet layer 13 and the entire photovoltaic module 1.

[0063] As an optional embodiment, the connecting component 2 comprises:

[0064] a first folding part, a first end of which is connected with the front plate layer 11 of one photovoltaic module 1, and a second end of which is connected with the front plate layer 11 of another photovoltaic module 1;

[0065] and / or,

[0066] The second folding part is connected with the back plate layer 12 of one photovoltaic module 1 at a first end and connected with the back plate layer 12 of another photovoltaic module 1 at a second end.

[0067] The first folding part and the second folding part are both used to realize the folding between the corresponding two photovoltaic modules 1.

[0068] It can be understood that the connecting component 2 is mainly used to realize the folding between the adjacent two photovoltaic modules 1, and therefore the connecting component 2 can be realized by setting the corresponding folding part between the adjacent front plate layers 11 and / or back plate layers 12 of the two adjacent photovoltaic modules 1. The specific implementation mode of the use material of the first folding part and the second folding part is not particularly limited in the present application, and a material with high aging resistance and long service life is adopted for implementation. Specifically, a composite polymer material can be used as the connecting material of the folding part, including but not limited to TPO (Thermoplastic Olefin), silicone, nylon, and other composite polymer materials, and a composite material such as a polymer material composite woven fabric. The connection mode between the folding part and the front plate layer 11 or the back plate layer 12 is not particularly limited in the present application, and mechanical connection or adhesive connection and the like can be used.

[0069] Specifically, the connecting component 2 can be realized by setting the first folding part between the adjacent front plate layers 11 and / or setting the second folding part between the adjacent back plate layers 12, and the folding between the corresponding two photovoltaic modules 1 is realized by realizing the folding between the front plate layers 11 and / or the folding between the back plate layers 12, which is simple, effective, and easy to realize.

[0070] As an optional embodiment, the connecting component 2 further comprises:

[0071] The folding assembly is used to connect the corresponding cell sheet layers 13 of a plurality of photovoltaic modules 1.

[0072] The folding assembly comprises a fixing part and a bending part. The fixing part is arranged at the outer periphery of the cell sheet layer 13, and the bending part is arranged between any two adjacent fixing parts. The bending part is used to realize the folding between the corresponding two fixing parts.

[0073] It is not difficult to understand that, in order to further realize the folding between the photovoltaic modules 1, and also to avoid the movement and falling off of the cell sheet layers 13, the connecting component 2 can also include a folding assembly connected with the cell sheet layers 13, the folding assembly including a plurality of fixing parts corresponding to the plurality of cell sheet layers 13 one by one, each fixing part being arranged around the corresponding cell sheet layer 13 to fix the cell sheet layer 13, and then a bending part is arranged between adjacent fixing parts to realize folding. The specific implementation mode of the materials of the fixing part and the bending part in the folding assembly is not particularly limited in the present application, and the same material can be used, or the fixing part and the bending part can be independently arranged with different materials, for example, the fixing part can be arranged in the same way as the front plate layer 11 or the back plate layer 12, and the hardness is high; the bending part is arranged in the same way as the first folding part or the second folding part, and a composite polymer material is used as the folding connecting material, which has high aging resistance and long service life; including but not limited to TPO (Thermoplastic Olefin, thermoplastic polyolefin), silicone, nylon, and other composite polymer materials, and composite materials such as high molecular material composite woven fabric.

[0074] Specifically, the connecting component 2 can also be realized by the folding assembly connected with the cell sheet layers 13, the folding between two adjacent fixing parts is realized to realize the folding between two adjacent cell sheet layers 13 and two photovoltaic modules 1, and the folding assembly can also be cooperated with the first folding part and the second folding part to further improve the folding performance between the photovoltaic modules 1 in the flexible photovoltaic assembly and prolong the folding life of the product.

[0075] As an optional embodiment, the connecting component 2 further includes:

[0076] The connecting conductor 23 has a first end connected with one cell sheet layer 13 and a second end connected with another cell sheet layer 13, and is used to realize the electrical connection between the two cell sheet layers 13.

[0077] The connecting conductor 23 is arranged between any two adjacent cell sheet layers 13.

[0078] It can be understood that the independent photovoltaic module 1 can form a relatively independent power generation module to a certain extent. However, in the actual power generation process, it is often necessary to connect and cooperate between each photovoltaic module 1 to form a complete power generation system. Therefore, the cell sheet layer 13 of each photovoltaic module 1 in the flexible photovoltaic assembly is preferably connected together to realize the entire photovoltaic energy system, and at this time it is also necessary to connect the conductors 23 to connect each cell sheet layer 13 together. The use of materials, connection settings, and other specific implementation methods of the connecting conductor 23 are not particularly limited by the present application, and materials with good conductivity, folding resistance, flexibility, and high strength should be used, and preferably further have corrosion resistance, waterproofness, and other functions. The connection method between the connecting conductor 23 and the cell sheet also has a variety of choices, which can be achieved by welding and other methods. The connecting conductor 23 can be implemented by using a special material metal sheet, including but not limited to copper bus bar, copper braid, silver bus bar, etc. In order to further ensure the stability and reliability of the cell sheet layer 13, the surface of the connecting conductor 23 can be covered with an alloy coating layer bonded to the corresponding first adhesive film layer 151 or second adhesive film layer 152 to fix the connecting conductor 23.

[0079] Specifically, the connecting component 2 can also include an electrical connection part between the cell sheet layers 13, which integrates all photovoltaic modules 1 in the flexible photovoltaic assembly into a complete photovoltaic system by establishing electrical connections between the cell sheet layers 13, effectively improves the power of photovoltaic power generation, meets the power, voltage, current, and other needs of different application scenarios, enhances the reliability of the photovoltaic system, maximizes the collection of solar energy, and improves the overall energy conversion efficiency of the system.

[0080] As an optional embodiment, the front plate layer 11, the first adhesive film layer 151, the cell sheet layer 13, the second adhesive film layer 152, and the back plate layer 12 are laminated by using a laminating process to generate the photovoltaic module 1.

[0081] It is easy to understand that the photovoltaic module 1 can be realized by laminating the front plate layer 11, the first adhesive film layer 151, the cell sheet layer 13, the second adhesive film layer 152 and the back plate layer 12 together to make them tightly combined. In order to facilitate the application, the size and shape of the front plate layer 11, the first adhesive film layer 151, the second adhesive film layer 152 and the back plate layer 12 are preferably consistent, and the cell sheet layer 13 itself needs to be further fixed, so that the size and shape of the cell sheet layer 13 around the fixed part of the folding assembly can be consistent with other layers, and the shape and size of the light-transmitting part of the front plate layer 11 are consistent with the shape and size of the arrangement area of the cell sheet in the cell sheet layer 13. In order to realize the mutual connection between each cell sheet in the cell sheet layer 13, the cell sheet layer 13 further includes a wire layer 16, which includes all the wires required for the connection of the cell sheet in the cell sheet layer 13. The specific preparation process parameters of the laminating process are not particularly limited in this application, for example, the preparation process can be realized by selecting the laminating temperature of 100-160℃, the laminating time of 10-30min and the laminating pressure of-0~-40kpa.

[0082] Specifically, the laminating process can effectively improve the strength and stability of the overall structure, improve the wear resistance, corrosion resistance and anti-aging performance of the material, ensure the service life of the entire flexible photovoltaic assembly from the process itself, the process is simple and easy to realize, and can ensure the consistency and stability of product quality.

[0083] As an optional embodiment, the front plate layer 11 is a multi-layer composite structure and / or the back plate layer 12 is a multi-layer composite structure.

[0084] The multi-layer composite structure includes a fluorine film layer and a glass fiber composite layer.

[0085] It can be understood that, in order to ensure the protection of the front plate layer 11 and / or the back plate layer 12 to the battery piece layer 13, the front plate layer 11 and the back plate layer 12 can be implemented in a multi-layer composite structure, and a composite front plate layer 11 and / or a composite back plate layer 12 is used. The specific type and implementation of the multi-layer composite structure are not particularly limited herein, and the composite front plate layer 11 includes but is not limited to a multi-layer composite structure composed of a fluorine film layer + a PET (Polyethylene Terephthalate, polyethylene terephthalate) layer + a fluorine film layer, a multi-layer composite structure composed of an acrylic coating layer + a PET layer + a fluorine film layer, a multi-layer composite reinforcing structure 14 composed of a fluorine film layer + a glass fiber composite layer + a fluorine film layer, a multi-layer composite reinforcing structure 14 composed of a fluorine film layer + a glass fiber composite layer + a PET layer + a fluorine film layer, etc. The composite front plate layer 11 as the outermost layer of the photovoltaic module plays a role in protecting the internal battery piece, and at the same time has a certain light transmittance to ensure the power generation efficiency of the photovoltaic module. The composite back plate layer 12 includes but is not limited to a multi-layer composite structure composed of a fluorine film layer + a PET layer + a fluorine film layer, a multi-layer composite structure composed of an acrylic coating layer + a PET layer + a fluorine film layer, a multi-layer composite reinforcing structure 14 composed of a fluorine film layer + a glass fiber composite layer + a fluorine film layer, a multi-layer composite reinforcing structure 14 composed of a fluorine film layer + a glass fiber composite layer + a PET layer + a fluorine film layer, etc.; the color of the front plate layer 11 and / or the back plate layer 12 includes but is not limited to black, white, etc. The composite back plate layer 12 as another outer layer of the photovoltaic module has a certain insulation performance in addition to the protection function, so as to ensure the safe use of the photovoltaic module.

[0086] It should be noted that the fluorine film layer includes but is not limited to an ETFE (Ethylene-Tetrafluoroethylene Copolymer, ethylene-tetrafluoroethylene copolymer) film, a PVDF (Polyvinylidene Fluoride, polyvinylidene fluoride) film, a PTFE (Polytetrafluoroethylene, polytetrafluoroethylene) film, etc.; the PET layer includes but is not limited to a single-layer or multi-layer PET, etc.; the glass fiber composite layer includes but is not limited to GFRP (Glass Fiber Reinforced Plastics, glass fiber reinforced composite plastics), CFRP (Carbon Fiber Reinforced Polymer / Plastic, carbon fiber reinforced composite plastics) and boron fiber reinforced composite plastics, etc.

[0087] Specifically, by further adopting a multi-layer composite structure to realize the front plate layer 11 and / or the back plate layer 12, the hardness of the front plate layer 11 and / or the back plate layer 12 can be further improved, the curling of the photovoltaic module 1 is further avoided by the arrangement of the front plate layer 11 and / or the back plate layer 12, the flatness of the photovoltaic module 1 is ensured, and the protection capability of the front plate layer 11 and / or the back plate layer 12 on the cell piece layer 13 is effectively improved.

[0088] Please refer to Figure 3 , Figure 3 The flexible photovoltaic assembly provided by the utility model adopts the first reinforcing structure, and a top view schematic diagram thereof is shown in the figure; please refer to Figure 4 , Figure 4 The layer structure schematic diagram of the flexible photovoltaic assembly corresponding to the first reinforcing structure provided by the utility model; as an optional embodiment, the reinforcing structure 14 comprises a plurality of intermediate reinforcing sheets corresponding to the cell piece layers 13; the intermediate reinforcing sheets are arranged around the corresponding cell piece layers 13.

[0089] It can be understood that the reinforcing process of the flexible photovoltaic assembly specifically comprises the implementation mode of arranging the edge sheet inside for lamination to reinforce, the intermediate reinforcing sheet is arranged at the edge of the photovoltaic module 1 inside to have a certain strength and be thin, considering that the cell piece layer 13 needs to avoid the hidden cracks caused by folding, and the size of the cell piece layer 13 is generally smaller than that of other layers, therefore, the intermediate reinforcing sheet can be arranged at the cell piece layer 13, and is arranged around the edge of the cell piece layer 13, so as to enhance the bending resistance of the product, and make the product have a certain flatness. The layer structure of the cell piece layer 13 after the arrangement of the intermediate reinforcing sheet, that is, the cell piece layer 13+ the intermediate reinforcing sheet, can be consistent with the shape and size of other layers, so as to improve the neatness of the entire flexible photovoltaic assembly, and facilitate application.

[0090] It should be noted that the specific implementation mode of the material of the intermediate reinforcing sheet is not particularly limited in the application, and a material having a certain hardness needs to be used, and a relatively preferred embodiment is to use an insulating material, and the implementation mode of the thin sheet comprises but is not limited to stainless steel sheet, aluminum alloy, acrylic plate, glass fiber polyurethane, engineering plastic and the like.

[0091] Specifically, by adjusting the preparation process, the thin sheet having a certain strength is laminated at the edge of the cell piece layer 13 in the photovoltaic module 1 in the lamination process, the internal edge sheet lamination reinforcing structure is used to realize the structural reinforcement of the photovoltaic module 1, so that the prepared flexible light weight photovoltaic product is not easy to deform, is not easy to have hidden cracks, and has strong wind load resistance.

[0092] Please refer to Figure 5 , Figure 5The utility model provides a flexible photovoltaic module adopts the overhead view schematic drawing of second kind reinforcing structure, please refer to Figure 6 , Figure 6 The utility model provides a second kind reinforcing structure corresponding flexible photovoltaic module's layer structure schematic drawing, as an optional embodiment, reinforcing structure 14 includes the L type edge protection structure of a plurality of of cladding in the each edge of flexible photovoltaic module, and the vertical edge of L type edge protection structure is pasted with the side of flexible photovoltaic module, and the horizontal edge of L type edge protection structure is pasted with the bottom surface of backboard layer 12 in flexible photovoltaic module.

[0093] It can be understood that the reinforcing process of the flexible photovoltaic module specifically includes the implementation mode of increasing the L-shaped edge protection structure on the edge of the product for reinforcement, and specifically, the bending resistance of the product can be enhanced by adding an L-shaped edge protection profile with a certain strength on the back edge of the photovoltaic module 1, so that the product has a certain flatness. The L-shaped edge protection structure can not only be arranged on the edge of the back of the photovoltaic module 1, but also can be arranged on the edge of the top, etc. The edge of the embodiment refers to the edge around the flexible photovoltaic module after the photovoltaic module 1 forms the flexible photovoltaic module. For example, when the photovoltaic module 1 is realized in a rectangular shape, the photovoltaic modules 1 are connected to each other by the wide edges. For the first photovoltaic module 1 on the left side of the flexible photovoltaic module, the back edge includes the wide edge of the left side of the backboard layer 12, the long edge of the front side of the backboard layer 12, and the long edge of the rear side of the backboard layer 12. The long edge refers to the longer side of the rectangle, and the wide edge refers to the shorter side of the rectangle. The specific implementation mode of the material and arrangement mode of the L-shaped edge protection structure is not particularly limited in the present application. The material of the L-shaped edge protection includes but is not limited to PPO (Polyphenylene Oxide), ABS (Acrylonitrile Butadiene Styrene), aluminum alloy, glass fiber polyurethane, etc.

[0094] Specifically, the bending resistance of the photovoltaic module 1 and the cell sheet layer 13 therein is enhanced by increasing the L-shaped edge protection structure on the edges around the product, and the back edge protection enhancement structure is used to make the photovoltaic module 1 have good flatness. Even if the photovoltaic module 1 is folded several times, the flatness of the photovoltaic module 1 itself can be maintained, so as to avoid structural deformation and hidden cracks of the cell sheet, and effectively improve the service life and aging resistance of the photovoltaic module 1 and the entire flexible photovoltaic module.

[0095] Please refer to Figure 7 , Figure 7 The utility model provides a flexible photovoltaic module adopts the overhead view schematic drawing of third kind reinforcing structure, please refer to Figure 8 , Figure 8The third reinforcing structure provided by the utility model provides a layer structure schematic diagram of the flexible photovoltaic module corresponding to the third reinforcing structure; as an optional embodiment, the reinforcing structure 14 comprises a plurality of back reinforcing sheets corresponding to the plurality of photovoltaic modules 1, and the back reinforcing sheets are arranged on the bottom surface of the back plate layer 12 in the corresponding photovoltaic module 1.

[0096] It can be understood that the reinforcing process of the flexible photovoltaic module specifically comprises an implementation mode of reinforcing the strength of the back plate layer 12 of the photovoltaic module 1, and specifically can reinforce the strength of the back plate layer 12 directly, for example, directly thickening the back plate layer 12, adding a fibrous reinforcing material or directly replacing the material of the back plate layer 12 with a material with higher strength, and the like, or can increase the back reinforcing sheet arranged on the bottom surface of the back plate layer 12, and reinforce the strength of the back plate layer 12 by using the additionally increased back reinforcing sheet. The specific implementation mode of the material, shape and size of the back reinforcing sheet is not particularly limited in the application, the back reinforcing sheet and the back plate layer 12 can be connected by bonding or the like, including but not limited to directly adopting a composite aluminum alloy back plate layer 12, a glass fiber back plate layer 12 or the like, and the like, and the like, or can increase one layer or a plurality of FR4 plates (Flame-Retardant 4, flame-retardant 4 epoxy glass fiber cloth laminated copper clad plate) on the basis of the existing composite back plate layer 12 to enhance.

[0097] Specifically, the embodiment provides a special design mode of the reinforcing structure 14, directly increases the overall strength of the product by reinforcing the strength of the back plate or enhances the back by increasing the back reinforcing sheet, so that the product has a certain flatness. The back reinforcing sheet is located on the outside of the composite back plate layer 12 and is tightly combined with the composite back plate layer 12 through a specific process, and the back reinforcing sheet not only has high strength and rigidity, can effectively prevent the edge of the photovoltaic module from being damaged during folding, but also can improve the overall stability and durability of the photovoltaic module.

[0098] Various embodiments are presented in the specification and claims below. Each embodiment can represent a distinct application of the present application. The applicant expects to be able to amend the claims to expressly recite one or more of the specific embodiments shown herein. The application may, however, also include any other applications shown in the specification or otherwise envisioned by the applicant, which are within the four corners of the claims submitted with the present application. The embodiments described herein are presented by way of example to enable one of ordinary skill in the art to practice the application. The applicant is not to be limited to or by these examples. Other embodiments can include a combination of features from different examples. The scope of the application is limited only by the claims submitted with the present application.

[0099] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to those skilled in the art, and all such modifications are within the scope of the present application as defined by the appended claims. The particular embodiments disclosed above are shown by way of example, and numerous other embodiments will become apparent to those skilled in the art, from the disclosure herein, without departing from the scope of the application. The scope of the application is limited only by the claims submitted with the present application.

Claims

1. A flexible photovoltaic module, characterized in that, The flexible photovoltaic assembly comprises a plurality of adjacent photovoltaic modules, two adjacent photovoltaic modules are connected by a connecting component, the connecting component is used to realize the folding between the two adjacent photovoltaic modules; for any photovoltaic module, the photovoltaic module comprises: a front plate layer arranged at the top of the photovoltaic module, the front plate layer comprises a light-transmitting part used for transmitting light; a back plate layer arranged at the bottom of the photovoltaic module; a cell layer arranged between the front plate layer and the back plate layer, the cell layer is used for photoelectric conversion based on the light provided by the light-transmitting part; a reinforcing structure arranged at the four peripheral edges of the flexible photovoltaic assembly and / or a reinforcing structure arranged at the bottom surface of the back plate layer.

2. The flexible photovoltaic assembly of claim 1, wherein, Further comprising: a first adhesive film layer arranged between the front plate layer and the cell layer; and / or, a second adhesive film layer arranged between the back plate layer and the cell layer; the first adhesive film layer and the second adhesive film layer are both used to provide buffer protection for the cell layer.

3. The flexible photovoltaic assembly of claim 1, wherein, The connecting component comprises: a first folding part, a first end of which is connected with the front plate layer of one photovoltaic module, and a second end of which is connected with the front plate layer of another photovoltaic module; and / or, a second folding part, a first end of which is connected with the back plate layer of one photovoltaic module, and a second end of which is connected with the back plate layer of another photovoltaic module; the first folding part and the second folding part are both used to realize the folding between the corresponding two photovoltaic modules.

4. The flexible photovoltaic assembly of claim 3, wherein, The connecting component further comprises: a folding assembly, the folding assembly is used to connect a plurality of cell layers corresponding to a plurality of photovoltaic modules; the folding assembly comprises a fixing part and a bending part, the fixing part is arranged at the outer periphery of the cell layer, and a bending part is arranged between any two adjacent fixing parts; the bending part is used to realize the folding between the corresponding two fixing parts.

5. The flexible photovoltaic assembly of claim 1, wherein, The connecting component further comprises: a connecting conductor, a first end of which is connected with one cell layer, and a second end of which is connected with another cell layer, used to realize the electrical connection between the two cell layers; a connecting conductor is arranged between any two adjacent cell layers.

6. The flexible photovoltaic assembly of claim 2, wherein, The front plate layer, the first adhesive film layer, the cell layer, the second adhesive film layer and the back plate layer are laminated by using a laminating process to generate a photovoltaic module.

7. The flexible photovoltaic assembly of claim 1, wherein, The front plate layer is a multi-layer composite structure and / or the back plate layer is a multi-layer composite structure; the multi-layer composite structure comprises a fluorine film layer and a glass fiber composite layer.

8. The flexible photovoltaic assembly of any of claims 1 to 7, wherein the flexible photovoltaic assembly is a flexible photovoltaic module. The reinforcing structure comprises a plurality of intermediate reinforcing sheets corresponding one-to-one to a plurality of cell layers; the intermediate reinforcing sheets are arranged at the periphery of the corresponding cell layers.

9. The flexible photovoltaic assembly of any of claims 1 to 7, wherein, The reinforcing structure comprises a plurality of L-shaped edge protection structures wrapped around the edges of the flexible photovoltaic assembly, the vertical edge of the L-shaped edge protection structure is attached to the side surface of the flexible photovoltaic assembly, and the horizontal edge of the L-shaped edge protection structure is attached to the bottom surface of the back plate layer in the flexible photovoltaic assembly.

10. The flexible photovoltaic assembly of any of claims 1 to 7, wherein the flexible photovoltaic assembly is a flexible photovoltaic module. The reinforcing structure comprises a plurality of back reinforcing sheets corresponding one-to-one to a plurality of photovoltaic modules, the back reinforcing sheets are arranged at the bottom surface of the back plate layer in the corresponding photovoltaic modules.

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