Flexible photovoltaic module

Abstract

The utility model provides a flexible photovoltaic module, which is composed of a plurality of group strings in series connection, each group string is composed of a plurality of single bodies in series connection, and each single body is composed of ultra-white toughened glass, a first photovoltaic module adhesive film, a battery piece, a series current line, a tensile rope, a second photovoltaic module adhesive film and a thermoplastic backboard which are sequentially stacked from top to bottom. And the adjacent single bodies are flexibly connected. According to the utility model, a whole piece of thick glass of a traditional photovoltaic module is replaced by a plurality of small pieces of thin glass, so that the weight of the module can be effectively reduced, the module can be transported after being bent, the thermoplastic backboard can better protect the module, and photovoltaic direct current cables, photovoltaic guide rails and photovoltaic panel pressing blocks can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy, and particularly relates to a photovoltaic component. Background Art

[0002] Photovoltaic modules are the core part of solar photovoltaic power generation systems. Their main function is to convert solar energy into electrical energy. Figure 1 As shown in the figure, the solar cells are sandwiched between two layers of glass. Photovoltaic modules are composed of several photovoltaic panels. The current structure of photovoltaic modules is as follows: Figure 2 There are many cells sandwiched between the two layers of glass. Once one of the cells is damaged, the entire assembly needs to be replaced. The assembly factory has to use thick tempered glass for protection. As the size of photovoltaic modules gradually increases, the tempered glass used in photovoltaic modules is also getting thicker. Take the current mainstream 580w double-glass module as an example: the size is 2.6 square meters, the weight is 36.3KG, and the weight per square meter is 14KG. The glass uses 3.2 mm on the front and 2.3 mm on the back, accounting for 87% of the weight. The price of glass is 109.2, accounting for 18.8. Many old factories did not reserve photovoltaic loads at the beginning of construction, resulting in the inability to install existing photovoltaic modules. Therefore, the equipment cost and transportation cost of existing photovoltaic modules are relatively high. Summary of the invention

[0003] The utility model aims to provide a flexible photovoltaic module to solve the problem that the glass weight of the photovoltaic module is too large and the cost is high in the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A flexible photovoltaic module is composed of a number of strings connected in parallel, a single string is composed of a plurality of monomers connected in series, a single monomer is composed of ultra-white tempered glass, a first photovoltaic module film, a battery sheet, a string flow line, a tensile rope, a second photovoltaic module film, and a thermoplastic backplane stacked in sequence from top to bottom; adjacent monomers are flexibly connected.

[0006] A plurality of monomers are connected in series to form a string, and the plurality of monomers share the same set of first photovoltaic module adhesive film, second photovoltaic module adhesive film, tensile rope, and thermoplastic back sheet, which are all made of flexible materials.

[0007] The battery sheets between adjacent cells are welded together through string lines, which are made of flexible material.

[0008] A plurality of strings are connected in parallel through a busbar to form the flexible photovoltaic module. The busbar is made of a flexible material.

[0009] Beneficial effects: The utility model replaces a whole piece of thick glass of a traditional photovoltaic module with several thin small pieces of glass, which can effectively reduce the weight of the module and can be bent for transportation. The thermoplastic backplane can better protect the module and can save photovoltaic DC cables, photovoltaic rails, and photovoltaic panel blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of a photovoltaic panel in the prior art;

[0011] Figure 2 It is a schematic diagram of the structure of a photovoltaic module in the prior art;

[0012] Figure 3 It is an exploded view of a single monomer of the utility model;

[0013] Figure 4 yes Figure 3 Side view of

[0014] Figure 5 It is a schematic diagram of multiple monomers connected in series into a string;

[0015] Figure 6 It is a schematic diagram of the battery cell welding process through the string line;

[0016] Figure 7 This is a schematic diagram of the battery cells being welded through string lines;

[0017] Figure 8 It is a schematic diagram of two strings connected in parallel through a busbar;

[0018] Fig. 9 It is a schematic diagram that places the various materials in order;

[0019] Fig.10 It is a schematic diagram of applying heat and pressure to both sides of the component;

[0020] Fig.11 It is a schematic diagram of the thermoplastic backing plate wrapping around other materials after heating and pressurizing;

[0021] Fig.12 Before heating and pressurization Fig.11 Middle BB section view;

[0022] Fig.13 After heating and pressurization Fig.11 Middle BB section view;

[0023] Fig.14 It is a schematic diagram of the bending of a flexible photovoltaic module;

[0024] Fig.15 It is a schematic diagram of the folding of a flexible photovoltaic module;

[0025] Fig.16 It is a schematic diagram of a photovoltaic roof in the prior art;

[0026] Fig.17 The utility model is a schematic diagram of a photovoltaic roof using the flexible photovoltaic module. DETAILED DESCRIPTION

[0027] The present invention will be further explained below in conjunction with the accompanying drawings.

[0028] The utility model discloses a flexible photovoltaic component which is composed of a plurality of strings connected in parallel, and a single string is composed of a plurality of monomers connected in series.

[0029] like Figure 3 and 4 As shown, a single monomer is composed of ultra-white tempered glass 1, first photovoltaic module adhesive film 2, battery cell 3, string line 4, tensile rope 5, second photovoltaic module adhesive film 6, and thermoplastic backboard 7 stacked in sequence from top to bottom. The function of ultra-white tempered glass 1 is to protect battery cell 3. The first photovoltaic module adhesive film 2 and the second photovoltaic module adhesive film 6 adhere the photovoltaic glass, battery cell, thermoplastic backboard, and tensile rope together, and at the same time play the role of protecting the battery cell and isolating the air. The tensile rope 5 serves as the skeleton material of the flexible photovoltaic module, making the flexible photovoltaic module tensile-resistant, preventing the flexible photovoltaic module from breaking, and preventing the string line from breaking. The string line 4 serves as an electrical connection between multiple battery cells, so that multiple monomers form a series structure. After heating and pressurizing, the thermoplastic backboard 7 will wrap other materials to play a protective role.

[0030] Figures 5 to 7 It shows how to connect multiple monomers in series to form a string.

[0031] like Figure 5 As shown, multiple monomers are connected in series to form a string, and multiple monomers share the same set of first photovoltaic module film 2, second photovoltaic module film 6, tensile rope 5, and thermoplastic back sheet 7. The first photovoltaic module film 2, the second photovoltaic module film 6, the tensile rope 5, and the thermoplastic back sheet 7 are all made of flexible materials.

[0032] like Figure 6 and 7 As shown, the battery sheets 3 between adjacent cells are welded together by the string lines 4. The string lines 4 are made of flexible material.

[0033] Several strings are connected in parallel through busbars 8 to form the flexible photovoltaic module. The busbars 8 are made of flexible material.

[0034] Figure 8 It shows the form of two strings connected in parallel through a busbar.

[0035] Figures 9 to 13 Taking 2X6 flexible photovoltaic modules as an example, the molding process of n*n flexible photovoltaic modules is shown. The steps are as follows:

[0036] (1) Arrange the materials in order, such as Fig. 9

[0037] (2) Apply heat and pressure to both sides of the component, such as Fig.10 ;

[0038] (3) After heating and pressurizing, the thermoplastic backsheet will wrap around other materials and play a protective role, such as Figures 11 to 13 .

[0039] like Fig.14 and 15 As shown, since the components are flexible structures at the turning points, they can be conveniently bent and transported.

[0040] like Fig.16 As shown, the conventional photovoltaic roof is composed of a color steel tile 21, a corner clamp 22, a photovoltaic rail 23, a photovoltaic panel pressing block 24, and a photovoltaic panel 25. The photovoltaic roof using the flexible photovoltaic module of the utility model is as follows: Fig.16 As shown, 2*14 flexible photovoltaic modules are used. The flexible photovoltaic modules are directly attached to the surface of the color steel tiles, saving photovoltaic DC cables, photovoltaic rails, and photovoltaic panel blocks, greatly reducing the cost of photovoltaic roofing.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flexible photovoltaic module, characterized in that: It is composed of a plurality of strings connected in parallel, a single string is composed of a plurality of monomers connected in series, a single monomer is composed of ultra-white tempered glass (1), a first photovoltaic module adhesive film (2), a battery sheet (3), a string flow line (4), a tensile rope (5), a second photovoltaic module adhesive film (6), and a thermoplastic back sheet (7) stacked in sequence from top to bottom; adjacent monomers are flexibly connected.

2. A flexible photovoltaic module according to claim 1, characterized in that: A plurality of monomers are connected in series to form a string, and the plurality of monomers share the same set of first photovoltaic module adhesive film (2), second photovoltaic module adhesive film (6), tensile rope (5), and thermoplastic back sheet (7).

3. A flexible photovoltaic module according to claim 2, characterized in that: The first photovoltaic module adhesive film (2), the second photovoltaic module adhesive film (6), the tensile rope (5), and the thermoplastic back sheet (7) are all made of flexible materials.

4. A flexible photovoltaic module according to any one of claims 1 to 3, characterized in that: The battery sheets (3) between adjacent cells are welded together via series connection wires (4).

5. A flexible photovoltaic module according to claim 4, characterized in that: The string line (4) is made of a flexible material.

6. A flexible photovoltaic module according to claim 1, characterized in that: A plurality of strings are connected in parallel via a busbar (8) to form the flexible photovoltaic assembly.

7. A flexible photovoltaic module according to claim 6, characterized in that: The busbar (8) is made of a flexible material.

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