WO2024045300A1

WO2024045300A1 - Bendable solar panel

Info

Publication number: WO2024045300A1
Application number: PCT/CN2022/127281
Authority: WO
Inventors: 李卓敏; 李伟华
Original assignee: 深圳市光瑞实业有限公司
Priority date: 2022-08-30
Filing date: 2022-10-25
Publication date: 2024-03-07
Also published as: CN218385242U

Abstract

A bendable solar panel, comprising a support (1) and a back plate (2) provided on the support (1). A plurality of EVA layers (3), two flexible composite films (4), an ETFE layer (5), and a cell sheet (6) are integrally laminated on the back plate (2); one EVA layer in the plurality of EVA layers (3) is provided between the back plate (2) and one of the two flexible composite films (4); the cell sheet (6) is formed by assembling a plurality of photoelectric conversion sheets (61) arranged in a matrix. A multi-layer flexible composite film (4) is provided between the back plate (2) and the support (1), and the flexible composite film (4) is used for replacing existing common EPE cotton plate structures; moreover, a PCB is removed, and the problem that the solar panel cannot be bent is solved while the weight of the panel is reduced, thereby improving the portability of the solar panel.

Description

A bendable solar panel

Technical field

The embodiment of the present utility model relates to the field of solar panels, and specifically relates to a bendable solar panel.

Background technique

With people's enthusiasm for outdoor sports, some charging equipment related to outdoor activities have emerged. As a clean energy that can be obtained directly from the sun, solar energy can be used as an emergency power source for smart devices such as mobile phones. Existing solar panels Because they are large in size and made of hard materials, they are inconvenient to carry.

technical problem

In view of this, the purpose of embodiments of the present invention is to provide a bendable solar panel for overcoming the above problems.

Technical solutions

This embodiment discloses a bendable solar panel, which includes: a bracket and a back plate provided on the bracket; a plurality of EVA layers, two flexible composite films, and an ETFE layer are integrally laminated on the back plate. , and a battery sheet, an EVA layer among the plurality of EVA layers is disposed between the back sheet and a flexible composite film of the two flexible composite films, the battery sheet is composed of a plurality of matrix-arranged photoelectric conversion Made up of spliced pieces.

Further, the two flexible composite films include a first flexible composite film and a second flexible composite film, wherein the first flexible composite film is close to the back plate, and the second flexible composite film is close to the ETFE layer.

Further, there are three EVA layers, and the three EVA layers include a first EVA layer, a second EVA layer and a third EVA layer; the first EVA layer is provided on the first flexible composite film and the back between the boards.

Further, the second EVA layer is provided between the second flexible composite film and the ETFE layer, and the third EVA layer is provided between the back plate and the bracket.

Further, the battery sheet is bonded between the first flexible composite film and the second flexible composite film.

Further, there are five EVA layers, and the five EVA layers are divided into a first EVA layer, a second EVA layer, a third EVA layer, a fourth EVA layer, and a fifth EVA layer.

Further, the first EVA layer is provided between the first flexible composite film and the back sheet, and the second EVA layer is provided between the second flexible composite film and the ETFE layer. , the third EVA layer is disposed between the first flexible composite film and the battery sheet, and the fourth EVA layer is disposed between the second flexible composite film and the battery sheet.

Further, the bracket includes a support plate supported on the back plate, and a main plate connected to the support plate. The support plate can rotate around the main plate to form a triangular support structure.

Furthermore, the bracket further includes a handle plate provided on one side of the main board, and a handle hole is provided on the handle plate.

beneficial effects

The utility model provides a solar panel with a multi-layer flexible composite film between the back panel and the bracket. The flexible composite film is used to replace the existing commonly used EPE cotton board structure, and at the same time removes the PCB board, thereby reducing the weight of the board. At the same time, it solves the problem that solar panels cannot be bent and improves the portability of solar panels.

Description of drawings

Figure 1 is a schematic diagram of the exploded structure of a bendable solar panel according to Embodiment 1 of the present utility model;

Figure 2 is a schematic diagram of an exploded structure of a bendable solar panel according to Embodiment 2 of the present invention.

Shown in the picture:

1. Bracket;

2. Back panel;

3. EVA layer;

4. Flexible composite membrane;

5. ETFE layer;

6. Battery chips;

11. Support plate;

12. Motherboard;

13. Handle board;

31. The first EVA layer;

32. Second EVA layer;

33. The third EVA layer;

34. The fourth EVA layer;

35. The fifth EVA layer;

41. The first flexible composite membrane;

42. The second flexible composite membrane;

61. Photoelectric conversion film;

131. Handle hole.

Best Mode of Carrying Out the Invention

In order to make the purpose, technical solutions and advantages of the present utility model more clear, the utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Glossary:

EVA: It is a copolymer of ethylene and acetic acid. The Chinese chemical name is: ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer). The English chemical name is: Ethylene Vinyl Acetate Copolymer. EVA has a wide range of application fields. my country's market consumption is constantly increasing every year, especially in the shoemaking industry. It is used in the soles and interior materials of mid-to-high-end travel shoes, hiking shoes, slippers, and sandals. It is also widely used in the field of new energy, such as photovoltaic materials, solar cell adhesives, etc.

ETFE: Ethylene-tetrafluoroethylene copolymer is a chemical substance. ETFE is the strongest fluoroplastic. While maintaining the good heat resistance, chemical resistance and electrical insulation properties of PTFE, it also has excellent radiation resistance and mechanical properties. Greatly improved, the tensile strength can reach 50MPa, nearly 2 times that of PTFE; ETFE has good processability, balanced physical properties, good mechanical toughness, and excellent radiation resistance. This material has the resistance of PTFE. Corrosion properties.

Embodiment 1

As shown in Figure 1, a bendable solar panel is disclosed, including: a bracket 1 and a back plate 2 arranged on the bracket 1; the back plate 2 is integrally laminated with three EVA layers 3 and two A flexible composite film 4, an ETFE layer 5, and a battery sheet 6. One of the three EVA layers 3 is disposed between the back plate 2 and one of the two flexible composite films 4. , the battery sheet 6 is spliced by multiple matrix-arranged photoelectric conversion sheets 61; the existing commonly used EPE cotton board is replaced by the flexible composite film 4, and then the battery sheet 6 is split into a plurality of small photoelectric conversion sheets 61 , thereby making the solar panel of the present application flexible and bendable, making it easier to carry.

Further, the two flexible composite films 4 include a first flexible composite film 41 and a second flexible composite film 42, wherein the first flexible composite film 41 is close to the back plate 2, and the second flexible composite film 42 Close to the ETFE layer 5, the back plate 2 adopts a fabric board design, which improves the bendability of the outer shell of the solar panel of the present application.

Further, the three EVA layers 3 include a first EVA layer 31, a second EVA layer 32 and a third EVA layer 33; the first EVA layer 31 is provided on the first flexible composite film 41 and the back panel 2 between.

Further, the second EVA layer 32 is provided between the second flexible composite film 42 and the ETFE layer 5 , and the third EVA layer 33 is provided between the back plate 2 and the bracket 1 . Since the EVA material itself has good adhesion, the back panel 2, the bracket 1, and the flexible composite film 3 are separated by three EVA layers, thereby improving the stability of the overall connection of the solar panel and thereby improving the use of the solar panel. life.

Furthermore, the battery sheet 6 is fit between the first flexible composite film 41 and the second flexible composite film 42 , and the battery sheet 6 is wrapped between the two flexible composite films 4 , thereby having a good effect on the battery sheet 6 The protection function isolates the battery piece 6 from the outside world, improves the sealing and insulation of the battery, and prevents the battery piece 6 from leaking electricity, thus affecting the charging performance of the solar panel.

In order to provide good support for the solar panel, the bracket 1 includes a support plate 11 supported on the back plate 2 and a main board 12 connected to the support plate 11. The support plate 11 can wrap around the main board. 12 is rotated to form a triangular support structure. The triangular support structure can be stably installed on the outdoor flat ground, so that a charging interface (not shown) can be set up on the solar panel as needed to charge mobile smart devices such as mobile phones.

Furthermore, in order to improve the portability of the solar panel, the bracket 1 also includes a handle plate 13 provided on one side of the main board 12 , and a handle hole 131 is opened in the handle plate 13 .

Embodiment 2

As shown in Figure 2, a bendable solar panel is disclosed, including: a bracket 1 and a back plate 2 arranged on the bracket 1; five EVA layers 3 are integrally laminated on the back plate 2. Two flexible composite films 4, ETFE layer 5, and battery sheet 6. One EVA layer among the five EVA layers 3 is provided between the back plate 2 and one of the two flexible composite films 4. During the period, the battery sheet 6 is spliced by multiple photoelectric conversion sheets 61 arranged in a matrix; the existing commonly used EPE cotton board is replaced by the flexible composite film 4, and then the battery sheet 6 is split into multiple small photoelectric conversion sheets 61, thus making the solar panel flexible and bendable, making it easier to carry.

Further, the two flexible composite films 4 include a first flexible composite film 41 and a second flexible composite film 42, wherein the first flexible composite film 41 is close to the back plate 2, and the second flexible composite film 42 Close to the bracket 1.

Further, the five EVA layers 3 are divided into a first EVA layer 31, a second EVA layer 32, a third EVA layer 33, a fourth EVA layer 34 and a fifth EVA layer 35; the first EVA layer 31 is provided at between the first flexible composite film 41 and the back plate 2, the second EVA layer 32 is provided between the second flexible composite film 42 and the ETFE layer 5, the third EVA layer 33 is disposed between the first flexible composite film 41 and the battery sheet 6, the fourth EVA layer 34 is disposed between the second flexible composite film 42 and the battery sheet 6, and the fifth EVA layer 35 is provided between the back plate 2 and the bracket 1 .

The above serial numbers of the embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

The above are only preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present utility model, or directly or indirectly used in other related The technical fields are all equally included in the scope of patent protection of the present utility model.

Claims

A bendable solar panel, characterized in that it includes: a bracket and a back plate arranged on the bracket; a plurality of EVA layers, two flexible composite films, an ETFE layer, and an ETFE layer are integrally laminated on the back plate. and a battery sheet, an EVA layer among the plurality of EVA layers is disposed between the back sheet and one of the two flexible composite films, the battery sheet is composed of a plurality of photoelectric conversion sheets arranged in a matrix Made of splicing.
The bendable solar panel according to claim 1, wherein the two flexible composite films include a first flexible composite film and a second flexible composite film, wherein the first flexible composite film is close to the back board, the second flexible composite film is close to the ETFE layer.
The bendable solar panel according to claim 2, characterized in that there are three EVA layers, and the three EVA layers include a first EVA layer, a second EVA layer and a third EVA layer; the first The EVA layer is disposed between the first flexible composite film and the back sheet.
The bendable solar panel according to claim 3, wherein the second EVA layer is provided between the second flexible composite film and the ETFE layer, and the third EVA layer is provided between the second flexible composite film and the ETFE layer. between the back panel and the bracket.
The bendable solar panel according to claim 4, wherein the battery sheet is bonded between the first flexible composite film and the second flexible composite film.
The bendable solar panel according to claim 2, characterized in that there are five EVA layers, and the five EVA layers are divided into a first EVA layer, a second EVA layer, a third EVA layer and a fourth EVA layer. layer and the fifth EVA layer.
The bendable solar panel according to claim 6, wherein the first EVA layer is provided between the first flexible composite film and the back sheet, and the second EVA layer is provided between Between the second flexible composite film and the ETFE layer, the third EVA layer is provided between the first flexible composite film and the battery sheet, and the fourth EVA layer is provided between the first flexible composite film and the battery sheet. between two flexible composite membranes and the battery sheet.
The bendable solar panel according to claim 1, wherein the bracket includes a support plate supported on the back plate, and a main plate connected to the support plate, and the support plate can be wound around the The motherboard rotates to create a triangular support structure.
The bendable solar panel according to claim 8, wherein the bracket further includes a handle plate provided on one side of the main panel, and a handle hole is provided on the handle plate.