Photovoltaic module

Abstract

The utility model discloses a photovoltaic assembly, comprising a photovoltaic packaging composite member, and the photovoltaic packaging composite member is bent and rolled into a roll-shaped photovoltaic assembly. The number of bending and rolling turns of the photovoltaic module is not less than 2; according to the utility model, a new product form of the rolled photovoltaic module is realized, the packaging and transporting efficiency of the photovoltaic module is greatly improved, the packaging and transporting cost is saved, a carpet type efficient laying effect can be realized during installation and application, and the installation and construction efficiency of the photovoltaic module is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic components, and specifically relates to a photovoltaic component. Background Art

[0002] Reliability, safety and low cost are requirements that any energy product must meet simultaneously. Over the past few decades, the photovoltaic industry has reduced the cost of photovoltaic products by 300 times in the past 40 years through continuous and high-quality research and development to improve photoelectric conversion efficiency, localization and automation of supply chains and production equipment. Of course, these past few decades have significantly and effectively reduced the cost of photovoltaic cells to the extreme, and both the conversion efficiency limit and the production scale effect are about to encounter bottlenecks. Therefore, photovoltaic module products still need more technological innovation.

[0003] Specifically, the existing photovoltaic modules are all laminated and packaged to obtain sheet-shaped photovoltaic modules, and then installed. The packaging and transportation process not only requires a large volume, but also the efficiency of on-site installation is relatively low. Although there are some photovoltaic module products that can achieve flexible bending effects in the prior art, they are all based on the technical effect of lightweight installation. The packaging and transportation process still requires a large volume, and the efficiency of on-site installation is also relatively low.

[0004] To this end, the inventor team of this applicant, based on the focused innovative research experience in the field of photovoltaic module installation and application and the accumulated theoretical knowledge in the industry over the years, decided to propose a new photovoltaic module product form, change the existing technical thinking bias towards photovoltaic modules, and further improve the application level of photovoltaic modules. Summary of the invention

[0005] In view of this, the purpose of the utility model is to provide a photovoltaic module, which realizes a new product form of a rolled-up photovoltaic module, greatly improves the packaging and transportation efficiency of the photovoltaic module, saves packaging and transportation costs, and can achieve a carpet-like efficient laying effect during installation and application, significantly improving the installation and construction efficiency of the photovoltaic module.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A photovoltaic assembly comprises a photovoltaic package composite, wherein the photovoltaic package composite is bent and rolled into a rolled photovoltaic assembly; the number of bending and rolling turns of the photovoltaic assembly is not less than 2 turns.

[0008] Preferably, the length and width of the photovoltaic encapsulation composite are set according to requirements; wherein, the width of the photovoltaic encapsulation composite is preferably in the range of 0.1-2.5 meters, and the length of the photovoltaic encapsulation composite is preferably in the range of 0.1-150 meters.

[0009] Preferably, the number of bending and rolling turns of the photovoltaic module is 3 to 300 turns, more preferably 5 to 100 turns.

[0010] Preferably, the photovoltaic component at least includes a first photovoltaic component circle located at the inner periphery and a second photovoltaic component circle bent and rolled up at the outer periphery of the first photovoltaic component circle; wherein the maximum size of the first photovoltaic component circle does not exceed 50 cm, more preferably does not exceed 25 cm.

[0011] Preferably, the first photovoltaic component circle located on the inner circumference uses an edge of the photovoltaic packaging composite as its bending and rolling starting position, and stops after returning to the bending and rolling starting position after bending and rolling the photovoltaic packaging composite for one circle, and the photovoltaic packaging composite located between the bending and rolling starting position and the ending position after bending and rolling for one circle is used as the first photovoltaic component circle.

[0012] Preferably, the Nth photovoltaic component circle uses the end position of the N-1th photovoltaic component circle as its bending and rolling starting position, and stops after the photovoltaic packaging composite is bent and rolled up one circle and returns to the bending and rolling starting position, and the photovoltaic packaging composite located between the bending and rolling starting position and the end position after bending and rolling up one circle is taken as the Nth photovoltaic component circle; wherein N is a natural number ≥2.

[0013] Preferably, the curvature radius of the photovoltaic encapsulation composite in at least one direction does not exceed 25 cm, more preferably does not exceed 15 cm.

[0014] Preferably, the photovoltaic component includes a curved rolled edge located at the outermost periphery, wherein a locking structure is provided at the curved rolled edge; wherein preferably, the locking structure adopts Velcro and / or tape and / or strap and / or buckle.

[0015] Preferably, the photovoltaic encapsulation composite comprises a front encapsulation portion, a cell string layer and a back encapsulation portion which are composited into one; wherein the front encapsulation portion and the back encapsulation portion do not include rigid encapsulation materials, and / or the cell string layer comprises a plurality of photovoltaic cell strings which are connected in series and / or in parallel and / or do not establish a direct series or parallel connection relationship, each photovoltaic cell string comprises a plurality of cell slices which are connected in series and / or in parallel, and the cell slices are preferably made of crystalline silicon wafers or amorphous silicon wafers; the cell slices are whole slices or slices; and the cell string layer is in a horizontal shape or a vertical shape.

[0016] Preferably, the photovoltaic encapsulation composite also includes an installation accessory layer, and the installation accessory layer includes at least an epitaxial unit extending outward along at least one edge of the back encapsulation portion; wherein the installation accessory layer and the back encapsulation portion are an integrally formed structure; or the installation accessory layer is composited on the back encapsulation portion; the installation accessory layer preferably includes a back mesh.

[0017] Preferably, the mounting accessory layer further comprises a base unit connected to the epitaxial unit, wherein a front projection of the back side encapsulation portion covers the base unit, and the base unit is composited on the back side encapsulation portion.

[0018] Preferably, each photovoltaic cell string in the photovoltaic packaging composite is connected in parallel using an integrally packaged and unidirectionally conductive bypass switch, and each bypass switch is electrically connected and outputted through an internal bus bar, eliminating the use of a junction box; the bypass switch preferably uses a diode, a transistor, or a MOS tube.

[0019] Preferably, the front packaging part includes a fiber composite material layer and / or a thermoplastic polymer material layer; and / or the back packaging part includes a fiber composite material layer and / or a thermoplastic polymer material layer; wherein preferably, the fiber composite material layer preferably adopts a thermosetting powder coating composite fiber cloth layer or a fiber material reinforced polymer sheet; the thermoplastic polymer material layer preferably includes a PET film layer and / or a polyolefin film layer.

[0020] Preferably, a method for preparing the photovoltaic module described above comprises at least the following steps:

[0021] S10), preparing a photovoltaic packaging composite by a composite process, preferably by a continuous composite device;

[0022] S20), bending and rolling up the photovoltaic encapsulation composite to achieve a rolling effect, wherein preferably, a winder is used to bend and roll up the photovoltaic encapsulation composite, and when bending and rolling up, the photovoltaic encapsulation composite is rolled up on the reel of the winder.

[0023] Preferably, in an application of the photovoltaic module described above, at least one photovoltaic module is unrolled and laid on a mounting base, and then directly or indirectly mounted on the base.

[0024] Preferably, in an application of the photovoltaic module described above, at least one photovoltaic module is unrolled and laid on a mounting base, and then mounted on the base by mounting accessories.

[0025] This application breaks the product form of the photovoltaic modules in the prior art, proposes to bend and roll up the photovoltaic modules into a roll, and realizes a new product form of the rolled photovoltaic modules, which greatly improves the packaging and transportation efficiency of the photovoltaic modules, saves packaging and transportation costs, and can achieve a carpet-like efficient laying effect during installation and application, significantly improving the installation and construction efficiency of the photovoltaic modules;

[0026] In addition, since the rollable photovoltaic package composite provided by the present application (i.e., the rolled photovoltaic module) has excellent rollability and a curvature radius preferably not exceeding 25 cm, it has more performance advantages over the traditional glass-encapsulated photovoltaic modules, mainly including:

[0027] Anti-hidden cracking: To a large extent, it avoids the risk of hidden cracking of photovoltaic modules during the manufacturing process, transportation and installation;

[0028] Higher conversion efficiency: Ability to adapt to different shapes and surfaces, while also helping to improve response to low-light environments, thereby improving light conversion efficiency.

[0029] Optical performance advantages: It can better adapt to changes in the incident angle of light, thereby improving the light absorption rate and is expected to improve the photoelectric conversion efficiency.

[0030] Anti-loss and fatigue performance: When used in a bent or curled state, it can maintain relatively high anti-loss and anti-fatigue performance compared to rigid components, thus extending the life of photovoltaic components.

[0031] Vibration and shock resistance: It has relatively better tolerance to vibration and shock, especially in some environments that need to withstand vibration or shock, such as mobile equipment, transportation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the structure of a photovoltaic assembly under a specific implementation mode of the utility model (the cable connector is not shown);

[0033] Figure 2 yes Figure 1 A top view of

[0034] Figure 3 It is a schematic diagram of the electrical connection structure of the battery string layer in the photovoltaic packaging composite under the specific implementation mode of the utility model;

[0035] Figure 4 yes Figure 3 A schematic diagram of a partial cross-sectional structure of a photovoltaic packaging composite;

[0036] Figure 5a It is a schematic diagram of the composite structure of the photovoltaic encapsulation composite 21 through the adhesive film layer 22 and the back net 23 in a specific embodiment of the utility model;

[0037] Figure 5b It is a schematic diagram of the direct composite structure of the photovoltaic packaging composite 21 and the back net 23 in a specific embodiment of the utility model;

[0038] Figure 6a It is a schematic diagram of the structure of a photovoltaic encapsulation composite member 31 rolled up on a reel 32 in a specific embodiment of the utility model;

[0039] Figure 6b It is a structural schematic diagram of the curling process of the photovoltaic encapsulation composite member 31 in a specific embodiment of the utility model;

[0040] Figure 6c It is a schematic diagram of the structure of a photovoltaic assembly 30 wrapped with a binding tape 33 according to a specific embodiment of the utility model;

[0041] Figure 7 It is a schematic diagram of the photovoltaic module being unrolled and quickly laid in a "carpet" manner in a specific implementation mode of the utility model;

[0042] Figure 8 It is a schematic diagram of the decomposed structure of the layer structure of the photovoltaic encapsulation composite member in Example 1 of the utility model;

[0043] Fig. 9 This is a schematic diagram of the electrical connection structure of the battery string layer in Example 4 of the utility model;

[0044] Fig.10 This is a schematic diagram of the electrical connection structure of the battery string layer in Example 5 of the utility model;

[0045] Fig.11 It is a schematic diagram of the electrical connection structure of the battery string layer in Example 6 of the present utility model. DETAILED DESCRIPTION

[0046] See also Figure 1 and Figure 2 As shown, an embodiment of the utility model discloses a photovoltaic module, including a photovoltaic packaging composite, wherein the photovoltaic packaging composite is bent and rolled into a rolled photovoltaic module; the number of bending and rolling turns of the photovoltaic module is not less than 2 turns; preferably, in this embodiment, the length and width of the photovoltaic packaging composite are set according to actual installation application requirements, and can be specifically set according to the base surface area of ​​the photovoltaic module to be laid, and this embodiment does not impose any special limitation on it; wherein, the width range of the photovoltaic packaging composite is preferably 0.1-2.5 meters, more preferably 0.5-2 meters; the length of the photovoltaic packaging composite is preferably 0.1-150 meters, more preferably 0.5-120 meters, and further preferably 1-100 meters; preferably, in this embodiment, the number of bending and rolling turns of the photovoltaic module is 3 turns to 300 turns, more preferably 5 turns to 100 turns.

[0047] Preferably, in the present embodiment, the photovoltaic component at least includes a first photovoltaic component circle located at the inner circumference and a second photovoltaic component circle bent and rolled on the outer circumference of the first photovoltaic component circle; wherein the maximum size of the first photovoltaic component circle does not exceed 50 cm, and more preferably does not exceed 25 cm; further preferably, in the present embodiment, the first photovoltaic component circle located at the inner circumference uses an edge of the photovoltaic packaging composite as its bending and rolling starting position, and is terminated after returning to the bending and rolling starting position after bending and rolling the photovoltaic packaging composite for one circle, and the photovoltaic packaging composite located between the bending and rolling starting position and the ending position after bending and rolling for one circle is used as the first photovoltaic component circle; further preferably, in the present embodiment, the Nth photovoltaic component circle uses the ending position of the N-1th photovoltaic component circle as its bending and rolling starting position, and is terminated after returning to the bending and rolling starting position after bending and rolling the photovoltaic packaging composite for one circle, and the photovoltaic packaging composite located between the bending and rolling starting position and the ending position after bending and rolling for one circle is used as the Nth photovoltaic component circle; wherein N is a natural number ≥2.

[0048] It should also be specially noted that, when the present application is implemented, the outermost curved and rolled edge of the photovoltaic module may not be located at the cutoff position of the adjacent photovoltaic module circle, that is, it is less than one photovoltaic module circle, and the number of curved and rolled circles of the photovoltaic module is not necessarily a positive integer. These are all possible situations that may occur when the photovoltaic module of the present application is implemented, and they all fall within the scope of protection of the present application.

[0049] Preferably, in order to facilitate the photovoltaic encapsulation composite to achieve a good bending and rolling effect, in the present embodiment, the radius of curvature of the photovoltaic encapsulation composite in at least one direction (the curvature radius test can be carried out with reference to the test standard of IEC 61215-2021) does not exceed 25 cm, and more preferably does not exceed 15 cm.

[0050] Preferably, in order to achieve a good shaping effect on the photovoltaic module and avoid unnecessary deformation during transportation or storage, in the present embodiment, the photovoltaic module includes a curved rolled edge located at the outermost periphery, wherein a locking structure is provided at the curved rolled edge; wherein preferably, the locking structure adopts Velcro and / or tape and / or strap and / or buckle, and technical personnel in this field can make specific choices according to actual needs. Of course, other structures can also be used to achieve the locking effect at the curved rolled edge of the photovoltaic module, and this embodiment does not impose any special restrictions on it.

[0051] Preferably, in this embodiment, the photovoltaic encapsulation composite comprises a front encapsulation part, a battery string layer and a back encapsulation part which are composited into one; wherein the front encapsulation part and the back encapsulation part do not include a rigid encapsulation material, and preferably use a flexible encapsulation material, and specifically use a known preferred flexible encapsulation material, as long as it can ensure that the curvature radius of the photovoltaic encapsulation composite in at least one direction does not exceed 25 cm; and / or the battery string layer comprises a plurality of photovoltaic battery strings connected in series and / or in parallel and / or without establishing a direct series or parallel connection relationship, each photovoltaic battery string comprises a plurality of battery cells connected in series (including stacked series) and / or in parallel, and the battery cells are made of crystalline silicon wafers or amorphous silicon wafers, and a battery string layer made of other crystalline materials can also be used, and the present application does not make a special and unique limitation on it;

[0052] It should be specially noted that the “several photovoltaic cell strings without direct series or parallel connection relationship” involved in the present application refer to those that are physically arranged in the same cell string layer, and they themselves have no direct series or parallel or other connection relationship in the cell string layer. These are conventional technical choices that can be made by those skilled in the art based on the content of this application.

[0053] Furthermore, the battery string layer involved in the present application can be any known battery string layer, and this embodiment does not specifically limit this. More preferably, in this embodiment, the battery cell adopts a crystalline silicon wafer (the corresponding photovoltaic battery string is a crystalline silicon battery string), which may include a monocrystalline silicon wafer and / or a polycrystalline silicon wafer. Preferably, in this embodiment, the battery cell adopts a whole piece or a slice, which can be selected according to the specific situation. These are the flexible implementation ranges of those skilled in the art based on known technologies. Further preferably, in this embodiment, the single side length of the whole battery cell is 100-260mm; the battery cell adopts a whole piece or a slice (specifically 1 / 2 slice or 1 / 3 slice or 1 / 4 slice or 1 / 6 slice or slices of other specifications).

[0054] Preferably, in this embodiment, the battery string layer is in a horizontal shape or a vertical arrangement shape, and may also be designed in any other known shape, which are all within the scope of flexible implementation by those skilled in the art based on known technologies.

[0055] Preferably, please refer to Figure 3 and Figure 4 As shown, in this embodiment, each photovoltaic cell string 141 in the photovoltaic packaging composite is connected in parallel using an integrally packaged and unidirectional bypass switch 142 (the number of which can be single or multiple, and those skilled in the art can make conventional settings according to actual circuit output needs, and this embodiment does not specifically limit it), and at the same time, each bypass switch 142 is electrically connected to the output through an inner bus bar 143, eliminating the use of a junction box; preferably, in this embodiment, the bypass switch can be a diode ( Figure 3 As shown), it can also be a MOS tube, a triode, or other bypass switch structure with unidirectional conduction. Since it has better performance in resisting high-temperature reverse bias breakdown, the bypass switch is more preferably a MOS tube; the two ends of the photovoltaic packaging composite realize power output through the well-known cable connector 143.

[0056] Since the photovoltaic packaging composite of the present application no longer uses a junction box, its photovoltaic cell string can be flexibly arranged in the longitudinal and / or transverse directions. Theoretically, the length and width of the photovoltaic packaging composite can be infinitely extended. In other words, the length and width of the photovoltaic packaging composite can be flexibly customized according to the actual product requirements of the photovoltaic components.

[0057] The detailed electrical connection scheme of the junction box-free photovoltaic packaging composite involved in the embodiment of the present application can be directly referred to the applicant's prior authorized patent: the junction box-free flexible lightweight photovoltaic module provided by the authorization announcement number CN 214753799 U.

[0058] Preferably, in order to achieve excellent flexible and bendable packaging effects, in the present embodiment, the photovoltaic packaging composite comprises a flexible front packaging portion, a crystalline silicon cell string layer and a flexible back packaging portion which are composited into one, wherein the flexible front packaging portion and the flexible back packaging portion can be any preferred known flexible packaging material, more preferably, the flexible front packaging portion comprises a thermosetting powder coating composite fiber cloth layer or a fiber material reinforced polymer sheet, and / or the flexible back packaging portion comprises a thermosetting powder coating composite fiber cloth layer or a fiber material reinforced polymer sheet, wherein the thermosetting powder coating composite fiber cloth layer can preferably adopt the packaging layer scheme disclosed in the applicant's prior authorized patent CN108022988B, and the fiber material reinforced polymer sheet can preferably adopt the photovoltaic packaging composite board material scheme disclosed in the applicant's prior authorized patent CN211555907U; of course, in order to further ensure the packaging quality The flexible front packaging portion and / or the flexible back packaging portion may be further provided with various well-known thermoplastic polymer material layers (also referred to as packaging film layers), such as adhesive film layers, PET (Chinese meaning means "polyethylene terephthalate") film layers, polyolefin film layers, PP (Chinese meaning means "polypropylene") co-extruded films, modified PO (Chinese meaning means "polyolefin") co-extruded films or modified PE (Chinese meaning means "polyethylene") co-extruded films, weather-resistant adhesive film layers, etc. In this regard, the present embodiment does not impose any restrictions on it, as long as the required flexible bending requirements can be achieved. Furthermore, the more preferred flexible packaging scheme can refer to the series of prior applications of the applicant, including: CN115911140A, CN216698389U, CN214753799U, CN217933809U, etc. In order to save space for the description, the present embodiment will not be described in detail.

[0059] Preferably, in order to achieve a quick installation effect on photovoltaic components, in the present embodiment, the photovoltaic packaging composite also includes an installation accessory layer, and the installation accessory layer at least includes an epitaxial unit extending outward along at least one edge of the back packaging portion, more preferably, the epitaxial unit extends outward along at least two opposite edges of the back packaging portion, and further more preferably, the epitaxial unit extends outward along the four edges of the back packaging portion; wherein, as one embodiment of the present application, the installation accessory layer and the back packaging portion are an integrally formed structure, that is, the installation accessory layer is the epitaxial portion of the back packaging portion; as another embodiment of the present application, the installation accessory layer and the back packaging portion are a separate structure, and are composited with the back packaging portion as a whole, wherein, further preferably, in the present embodiment, when the installation accessory layer and the back packaging portion are a separate structure, the installation accessory layer also includes a base unit integrally connected with its epitaxial unit, wherein the front projection of the back packaging portion covers the base unit, and the base unit is composited on the back packaging portion; further preferably, in the present embodiment, the installation accessory layer adopts a back mesh.

[0060] When the photovoltaic modules are subsequently installed, the photovoltaic modules can be quickly laid in a "carpet" style, and then the extended back net is quickly fixed and installed on the base surface. Specifically, preferably, a hook is used to hook the extended back net for flattening and fixing. Of course, a structural device can also be used to achieve reliable flattening and fixing of the back net, that is, the rapid installation is completed;

[0061] In other embodiments, a back net may be laid on the ground in advance, and then photovoltaic modules may be laid on the back net, and finally the photovoltaic modules may be fixed on the back net by fasteners on all sides. In order to further improve the installation strength, more preferably, in this embodiment, one or more groups of Velcro are set at corresponding positions of the back net and the photovoltaic modules. When the photovoltaic modules are laid on the back net, the Velcros are bonded to each other accordingly. Of course, in other embodiments, the photovoltaic modules may be directly fixed on the base surface by fastening and / or gluing.

[0062] It should be particularly noted that the back mesh involved in this embodiment can be any known fiber woven mesh structure (for example, glass fiber) as long as it can achieve a quick installation effect.

[0063] Preferably, this embodiment further proposes a method for preparing the photovoltaic module described above, which at least comprises the following steps:

[0064] S10), preparing a photovoltaic packaging composite by a composite process, preferably by a continuous composite device (specifically, a laminating device with a continuous composite effect); preferably, a laminating device or a continuous composite device is used to implement the composite process; wherein, the laminating device can adopt a known laminating process, and the continuous composite device can refer to the continuous composite molding device provided in the prior application of the applicant: CN110491961B, and refer to the continuous composite process adopted by the device, and in order to save the description space, the present embodiment will not be described in detail;

[0065] S20), bending and rolling up the photovoltaic encapsulation composite to achieve a rolling effect, wherein preferably, a winder is used to bend and roll up the photovoltaic encapsulation composite, and when bending and rolling up, the photovoltaic encapsulation composite is rolled up on the reel of the winder.

[0066] Preferably, see Figure 7As shown, this embodiment further proposes an application of the photovoltaic assembly according to the above, wherein the photovoltaic assembly 1 is unrolled and quickly laid on the installation base in a "carpet" manner, and then directly or indirectly installed on the base; further preferably, the photovoltaic assembly 1 is quickly fixed on the base by means of installation accessories (specifically, a back mesh structure can be used), and the photovoltaic assembly 1 can also be directly fixed on the base by fastening and / or bonding. Those skilled in the art can choose a suitable installation method according to actual needs, and this embodiment does not impose the sole limitation on this.

[0067] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0068] Example 1: Based on the above implementation scheme, this application specifically proposes Example 1, please refer to Figure 1 and Figure 2 The photovoltaic module 10 shown includes a photovoltaic packaging composite member, please refer to Figure 8 As shown, it includes a fluorine film 11, a thermosetting powder coating composite fiber cloth layer 12, a front EVA adhesive film 13, a crystalline silicon battery string layer 14, a back EVA adhesive film 15, and a fiber material reinforced polymer sheet 16, wherein the fluorine film 11, the thermosetting powder coating composite fiber cloth layer 12 and the front EVA adhesive film 13 constitute a flexible front packaging part, and the back EVA adhesive film 15 and the fiber material reinforced polymer sheet 16 constitute a flexible back packaging part;

[0069] During preparation, after the above-mentioned layer structures are laid in a composite device in order, composite is achieved through a composite process to obtain a formed photovoltaic packaging composite. Specifically preferably, in this embodiment, a continuous composite device is used to complete the composite packaging between the flexible front packaging part, the crystalline silicon cell string layer and the flexible back packaging part, thereby obtaining a photovoltaic packaging composite. After testing, the width of the photovoltaic packaging composite is about 0.5 meters, and the radius of curvature in at least one direction is about 15 cm;

[0070] In this embodiment, the photovoltaic encapsulation composite is bent and rolled in its length direction into a rolled photovoltaic assembly 10; the number of bending and rolling circles of the photovoltaic assembly 10 is 8 circles, specifically including a first photovoltaic assembly circle 10a, a second photovoltaic assembly circle 10b, a third photovoltaic assembly circle 10c, a fourth photovoltaic assembly circle 10d, a fifth photovoltaic assembly circle 10e, a sixth photovoltaic assembly circle 10f, a seventh photovoltaic assembly circle 10g and an eighth photovoltaic assembly circle 10h; wherein the first photovoltaic assembly circle 10a is circular in shape ( Figure 2 a1 is the bending and rolling starting position of the first photovoltaic component circle 10a, and a2 is the bending and rolling ending position of the first photovoltaic component circle 10a. Its diameter (that is, the maximum size of the first photovoltaic component circle 10a) is 30 cm.

[0071] In this embodiment 1, a winder is used to bend and roll up the photovoltaic packaging composite. During the bending and rolling process, the photovoltaic packaging composite is rolled up on the reel of the winder. The bending and rolling of the photovoltaic packaging composite is automatically completed by the winder to obtain a photovoltaic module with a completed rolling effect. After packaging, it can be circulated, transported, installed and applied.

[0072] Example 2: Based on the above implementation scheme, the present application specifically proposes Example 2, providing a photovoltaic packaging composite 21, including a front packaging part, a battery string layer and a back packaging part 21a that are composited into one body, wherein, see Figure 5a As shown, a back web 23 (in this embodiment 2, a glass fiber web is specifically used) is compounded on the back packaging part 21a through an adhesive film layer 22, and the area of ​​the back web 23 is larger than the area of ​​the back packaging part 21a, and extends outward along the edges of the back packaging part 21a. After the photovoltaic packaging composite 21 is bent and rolled, a photovoltaic module is obtained; as another implementation method of this embodiment 2, please refer to Figure 5b As shown, a back web 23 (in this embodiment 2, a glass fiber web is specifically used) is directly compounded on the back packaging part 21a, and the area of ​​the back web 23 is larger than the area of ​​the back packaging part 21a, and the back web 23 extends outward along the edges of the back packaging part 21a, and the photovoltaic packaging composite 21 is bent and rolled to obtain a photovoltaic module;

[0073] When the photovoltaic modules are subsequently installed, they are quickly laid out in a "carpet" style, and then hooked onto the extended back net to flatten and fix it on the base surface, thus completing an efficient and convenient installation.

[0074] Example 3: Based on the above implementation scheme, this application specifically proposes Example 3, using a winding machine to bend and roll the photovoltaic packaging composite member, please refer to Figure 6a , Figure 6b and Figure 6cAs shown, when bending and rolling, the photovoltaic encapsulation composite 31 is first rolled onto the reel 32 of the winder (not shown), and then the reel 32 is driven to rotate, and finally the photovoltaic encapsulation composite 31 is bent and rolled into a rolled photovoltaic component 30 (the reel 32 is withdrawn); in order to facilitate the shaping effect of the photovoltaic component 30, a locking structure is provided at the bent and rolled edge. In this embodiment 3, a binding tape 33 is specifically wrapped around the bent and rolled edge of the photovoltaic component 30 to avoid deformation; it should be noted that in actual implementation, while the photovoltaic encapsulation composite 31 is bent and rolled, the edge of the photovoltaic component 30 can be cut and trimmed to meet the specifications and size requirements of the final product.

[0075] Example 4: Based on the above implementation scheme, the present application specifically proposes Example 4, the size of the installation platform is about 80m (length) * 2.5m (width), and it is flat; the photovoltaic modules are arranged in a single row vertical shape, with a length of 76-78m, covering an area ratio of 87-90% of the installation platform, and the installed capacity is about 30KW;

[0076] Among them, the battery string layer in the photovoltaic module (see Fig. 9 As shown in the figure, 10-15 independent integrated modules are connected in series and integrated into one, and the length and width of a single integrated module are 4.8m*2.3m, or 6m*2.3m, or 7.2m*2.3m. It should be noted that those skilled in the art can design the size of the photovoltaic module according to the actual installation area, and this embodiment does not impose any special limitation on it.

[0077] Example 5: Based on the above implementation scheme, the present application specifically proposes Example 5, the size of the installation platform is about 80m (length) * 5m (width), which is a color steel tile base; the photovoltaic modules are arranged in a single row in a horizontal shape, with a length of 76-78m, covering an area ratio of 87-90% of the installation platform, and an installed capacity of about 30KW;

[0078] Among them, the battery string layer in the photovoltaic module (see Fig.10 As shown in the figure, 12 to 18 independent integrated modules are connected in series and integrated into one. The length and width of a single integrated module are 4.8m*4.5m, or 7.2m*4.5m. It should be noted that those skilled in the art can design the size of the photovoltaic module according to the actual installation area, and this embodiment does not impose any particular limitation on it.

[0079] Embodiment 6: The remaining technical solutions of this embodiment are the same as those of Embodiment 5, except that the photovoltaic module adopts a double-row horizontal shape, wherein the battery string layer in the photovoltaic module is specifically composed of an upper row of battery strings and a lower row of battery strings that are not connected to each other and are arranged in double rows in parallel (see Fig.11As shown in the figure, the upper battery string and the lower battery string are respectively composed of 12-18 independent integrated modules connected in series, and the size of a single integrated module is 4.8m*2.3m, or 7.2m*2.3m. It should be noted that those skilled in the art can specifically design the size of the photovoltaic module according to the actual installation area, and this embodiment does not impose any special limitation on it.

[0080] Embodiment 7: The rest of the technical solutions of this embodiment are the same as those of Embodiment 2, except that, in this embodiment 7, the back net is tensioned and fixed on the installation base surface by a tensioning structure (a known tensioning structure may be adopted), thereby achieving fast and efficient installation.

[0081] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0082] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photovoltaic module, characterized in that: It comprises a photovoltaic packaging composite part, wherein the photovoltaic packaging composite part is bent and rolled into a rolled photovoltaic component; the number of bending and rolling circles of the photovoltaic component is not less than 2 circles.

2. The photovoltaic module according to claim 1, characterized in that: The length and width of the photovoltaic encapsulation composite are set according to requirements.

3. The photovoltaic module according to claim 2, characterized in that: The width of the photovoltaic packaging composite member ranges from 0.1 to 2.5 meters.

4. The photovoltaic module according to claim 2, characterized in that: The length of the photovoltaic encapsulation composite is preferably 0.1-150 meters.

5. The photovoltaic module according to claim 1, characterized in that: The number of bending and rolling turns of the photovoltaic module is 3 turns to 300 turns.

6. The photovoltaic module according to claim 1, characterized in that: The number of bending and rolling turns of the photovoltaic module is 5 to 100 turns.

7. The photovoltaic module according to claim 1, characterized in that: The photovoltaic assembly at least comprises a first photovoltaic assembly circle located at the inner periphery and a second photovoltaic assembly circle bent and rolled up at the outer periphery of the first photovoltaic assembly circle.

8. The photovoltaic module according to claim 7, characterized in that: The maximum size of the first photovoltaic component circle does not exceed 50 cm.

9. The photovoltaic module according to claim 7, characterized in that: The maximum size of the first photovoltaic component circle does not exceed 25 cm.

10. The photovoltaic module according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9, characterized in that: The first photovoltaic component circle located on the inner circumference uses an edge of the photovoltaic packaging composite as its bending and rolling starting position, and stops after returning to the bending and rolling starting position after bending and rolling one circle of the photovoltaic packaging composite. The photovoltaic packaging composite located between the bending and rolling starting position and the ending position after bending and rolling one circle is used as the first photovoltaic component circle.

11. The photovoltaic module according to claim 10, characterized in that: The Nth photovoltaic component circle takes the ending position of the N-1th photovoltaic component circle as its bending and rolling starting position, and stops after the photovoltaic packaging composite is bent and rolled up for one circle and returns to the bending and rolling starting position, and the photovoltaic packaging composite located between the bending and rolling starting position and the ending position after bending and rolling up for one circle is taken as the Nth photovoltaic component circle; wherein N is a natural number ≥2.

12. The photovoltaic module according to claim 1, characterized in that: The curvature radius of the photovoltaic encapsulation composite in at least one direction does not exceed 25 cm.

13. The photovoltaic module according to claim 1, characterized in that: The curvature radius of the photovoltaic encapsulation composite in at least one direction does not exceed 15 cm.

14. The photovoltaic module according to claim 1, characterized in that: The photovoltaic component comprises a curved curling edge located at the outermost periphery, wherein a locking edge structure is provided at the curved curling edge.

15. The photovoltaic module according to claim 14, characterized in that: The edge locking structure adopts Velcro and / or adhesive tape and / or binding strap and / or lock buckle.

16. The photovoltaic module according to claim 1, characterized in that: The photovoltaic encapsulation composite comprises a front encapsulation portion, a battery string layer and a back encapsulation portion which are composited into one; wherein the front encapsulation portion and the back encapsulation portion do not include a rigid encapsulation material, and / or the battery string layer comprises a plurality of photovoltaic battery strings which are connected in series and / or in parallel and / or do not establish a direct series or parallel connection relationship, each photovoltaic battery string comprises a plurality of battery cells which are connected in series and / or in parallel, and the battery cells are whole or sliced; the battery string layer is in a horizontal shape or a vertical shape.

17. The photovoltaic module according to claim 16, characterized in that: The cell is made of crystalline silicon or amorphous silicon.

18. The photovoltaic module according to claim 16 or 17, characterized in that: The photovoltaic packaging composite also includes an installation accessory layer, which includes at least an epitaxial unit extending outward along at least one edge of the back packaging part; wherein the installation accessory layer and the back packaging part are an integrally formed structure; or the installation accessory layer is composited on the back packaging part.

19. The photovoltaic module according to claim 18, characterized in that: The installation accessory layer includes a back net.

20. The photovoltaic module according to claim 18, characterized in that: The mounting accessory layer further comprises a base unit connected to the epitaxial unit, wherein a front projection of the back side encapsulation portion covers the base unit, and the base unit is composited on the back side encapsulation portion.

21. The photovoltaic module according to claim 16 or 17, characterized in that: Each photovoltaic cell string in the photovoltaic packaging composite is connected in parallel by an integrally packaged and unidirectionally conductive bypass switch, and each bypass switch realizes electrical connection output through an internal bus bar, eliminating the use of a junction box.

22. The photovoltaic module according to claim 21, characterized in that: The bypass switch adopts a diode, a triode or a MOS tube.

23. The photovoltaic module according to claim 16 or 17, characterized in that: The front side encapsulation comprises a fiber composite material layer and / or a thermoplastic polymer material layer; and / or the rear side encapsulation comprises a fiber composite material layer and / or a thermoplastic polymer material layer.

24. The photovoltaic module according to claim 23, characterized in that: The fiber composite material layer adopts a thermosetting powder coating composite fiber cloth layer or a fiber material reinforced polymer sheet.

25. The photovoltaic module according to claim 23, characterized in that: The thermoplastic polymer material layer includes a PET film layer and / or a polyolefin film layer.

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