A lightweight flexible solar module

Abstract

The present invention discloses a lightweight flexible solar module, comprising: a first backsheet, a first rear encapsulation film, a transparent backsheet, a second rear encapsulation film, a cell layer, a first front encapsulation film, a first transparent front sheet, a second front encapsulation film, and a second transparent front sheet, stacked in order from bottom to top, and laminated in an integrated form using a laminator. The product provided in this application is lightweight and foldable, making it more portable than conventional flexible modules. The included stand makes it more compatible with various usage scenarios than conventional lightweight flexible modules, enhancing the user experience.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic application technology, and in particular to a lightweight flexible solar module. Background Art

[0002] Solar energy has garnered significant attention due to its unique advantages. Abundant solar radiation is a vital energy source, inexhaustible, pollution-free, inexpensive, and freely accessible to humanity. Solar energy reaches the Earth at a rate of 800 megawatt-hours per second. If 0.1% of the solar energy on the Earth's surface were converted into electricity, a conversion rate of 5%, the annual power generation could reach 5.6 million kilowatt-hours, equivalent to 40 times the world's energy consumption. These unique advantages of solar energy have led to a continuous increase in the variety of solar cells since the 1980s, a broadening of their applications, and a gradual expansion of the market. Currently, solar energy is being applied in a wide range of fields.

[0003] How to make high-power, lightweight, flexible solar panels easy to carry, improve compatibility with usage scenarios, and enhance user experience are the technical challenges that need to be solved at present. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a lightweight and flexible solar panel that is easy to carry, has improved compatibility with usage scenarios, and can enhance user experience in response to the shortcomings of the existing technology.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A lightweight flexible solar panel comprises: a first back sheet, a first backside encapsulation film, a transparent back sheet, a second backside encapsulation film, a cell layer, a first front side encapsulation film, a first transparent front sheet, a second front side encapsulation film, and a second transparent front sheet, which are stacked in sequence from bottom to top and are laminated into one piece by a laminating machine.

[0007] Furthermore, the first back panel, transparent back panel, first transparent front panel and second transparent front panel are provided with equally divided folding lines along the vertical direction of the length, small pieces of material of the same size are cut off at both ends of the folding lines, and fabrics of the same size are placed at the corresponding positions of the small pieces of material.

[0008] Furthermore, the cell layer includes a plurality of solar cell string panels, and the solar cell string panels are electrically connected through wires, and the wires are located at both ends of the folding line.

[0009] Furthermore, the conductive wire is a copper braided tape.

[0010] Furthermore, the fabric is a fabric with an anti-permeability coating.

[0011] Furthermore, the second back-side encapsulation film, the first front-side encapsulation film, and the second front-side encapsulation film are made of any one of the following materials: EVA, POE, and PVB.

[0012] Furthermore, the first backside encapsulation film includes: EVA and POE containing additives for reducing melt viscosity and increasing fluidity.

[0013] Furthermore, the length and width of the first backplane and the first backside encapsulation film are the same and larger than those of the second backside encapsulation film, the first frontside encapsulation film, and the second frontside encapsulation film.

[0014] Furthermore, the shapes of the small pieces of material include: semicircular and rectangular.

[0015] The benefits of lightweight flexible solar panels are as follows:

[0016] The product provided by this application is lightweight and foldable, making it more convenient to carry than conventional flexible modules. The product's included bracket is more compatible with various usage scenarios than traditional lightweight flexible modules, enhancing the user experience. This application uses coated fabric for the folding area of lightweight flexible solar modules to address existing flexible module folding issues, obstructing the folding connection lines, and addressing watertightness issues. The bracket is placed at the bisecting line to address folding thickness, compatibility with usage scenarios, and the issue of extrusion of cracks after folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a lightweight flexible solar module provided by the present invention.

[0018] Figure 2 This is a schematic diagram of the first backplane after small pieces of material are cut off at both ends of the bisecting line in one embodiment of the present invention.

[0019] Figure 3 This is a front schematic diagram of a lightweight flexible solar module provided by the present invention.

[0020] Figure 4 This is a schematic diagram of the back side of a lightweight flexible solar module provided by the present invention.

[0021] Figure 5 A schematic diagram of a bracket for a lightweight flexible solar module provided by the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments, but this does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0023] like Figure 1-5As shown, a lightweight flexible solar panel comprises: a first back sheet 109, a first backside encapsulation film 108, a transparent back sheet 107, a second backside encapsulation film 106, a cell layer 105, a first front side encapsulation film 104, a first transparent front sheet 103, a second front side encapsulation film 102, and a second transparent front sheet 101, which are stacked in sequence from bottom to top and are integrally formed by lamination using a laminator.

[0024] Preferably, the front plate can be made of a fluorine-containing film, such as PVDF or ETFE; the back plate can be made of CPC or KPF materials.

[0025] Furthermore, the first back panel, transparent back panel, first transparent front panel and second transparent front panel are provided with equally divided folding lines 600 along the vertical direction of the length, small pieces of material of the same size are cut off at both ends of the folding lines, and fabrics of the same size are placed at the corresponding positions when the small pieces of material are cut off.

[0026] It should be noted that the equally divided folding line 600 divides the first back plate, the transparent back plate, the first transparent front plate, and the second transparent front plate into N equal parts, where N is greater than or equal to 2.

[0027] Furthermore, the cell layer includes a plurality of solar cell string panels, and the solar cell string panels are electrically connected through wires, and the wires are located at both ends of the folding line.

[0028] Furthermore, the conductive wire is a copper braided tape.

[0029] The conductor positions at both ends of the fold are laid with cloth and laminated with EVA film, which effectively shields the exposed conductors and also enhances the connection strength between components.

[0030] Furthermore, the fabric is a fabric with an anti-permeability coating.

[0031] Furthermore, the second back-side encapsulation film, the first front-side encapsulation film, and the second front-side encapsulation film are made of any one of the following materials: EVA, POE, and PVB.

[0032] Furthermore, the first backside encapsulation film comprises EVA and POE containing additives to reduce melt viscosity and increase fluidity. This is because it can naturally form a self-flowing sealing edge, has stronger bonding properties, and does not delaminate during folding.

[0033] Furthermore, the length and width of the first backplane and the first backside encapsulation film are the same and larger than those of the second backside encapsulation film, the first frontside encapsulation film, and the second frontside encapsulation film.

[0034] Furthermore, the shapes of the small pieces of material include: semicircular and rectangular.

[0035] Furthermore, the bracket 300 is installed at the folding line between the solar cell string panels 100, and one bracket 300 is installed at each location and fixed with locking screws 500. Figure 4 As shown, 200 is a corner guard.

[0036] Furthermore, the locking screws 500 are fixing screws for mounting the bracket 300 on the solar panel.

[0037] The benefits of lightweight flexible solar panels are as follows:

[0038] The product provided by this application is lightweight and foldable, making it more portable than conventional flexible modules. The product's included bracket is more compatible with various usage scenarios than conventional lightweight flexible modules, enhancing the user experience. This application utilizes coated fabric for the folding area of lightweight flexible solar modules to address existing flexible module folding issues, obscuring the folding connection lines, and addressing watertightness issues. Brackets are placed at the bisecting line to address folding thickness, compatibility with usage scenarios, and the risk of extrusion cracks after folding. It naturally forms a self-sealing, self-sealing edge, providing enhanced bonding performance while preventing delamination during folding.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A lightweight flexible solar panel, characterized in that: include: The first back sheet, the first back encapsulation film, the transparent back sheet, the second back encapsulation film, the battery layer, the first front encapsulation film, the first transparent front sheet, the second front encapsulation film, and the second transparent front sheet are stacked in sequence from bottom to top, and laminated into one piece by a laminator; The first back panel, the transparent back panel, the first transparent front panel, and the second transparent front panel are provided with equally divided folding lines along the vertical direction of the length, small pieces of material are cut off at both ends of the folding lines, and each small piece of material has the same size. Fabrics of the same size as the small pieces of material are placed at the positions corresponding to the positions where the small pieces of material are cut off; The first backside encapsulation film includes: EVA and POE containing additives for reducing melt viscosity and increasing fluidity.

2. The lightweight flexible solar module according to claim 1, characterized in that: The cell layer includes a plurality of solar cell string panels, and the solar cell string panels are electrically connected through wires, and the wires are located at both ends of the folding line.

3. The lightweight flexible solar module according to claim 2, characterized in that: The conductor is a copper braid.

4. The lightweight flexible solar module according to claim 1, characterized in that: The fabric is an anti-penetration coated fabric.

5. The lightweight flexible solar module according to claim 1, characterized in that: The second backside encapsulation film, the first frontside encapsulation film, and the second frontside encapsulation film are made of any one of the following materials: EVA, POE, and PVB.

6. The lightweight flexible solar module according to claim 1, characterized in that: The length and width of the first backplane and the first backside encapsulation film are the same and larger than the second backside encapsulation film, the first frontside encapsulation film, and the second frontside encapsulation film.

7. The lightweight flexible solar module according to claim 1, characterized in that: The shapes of the small pieces of material include: semicircle and rectangle.

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